e7bb37436a
Use an explicit #warning to explain the problem. This is more informative and avoids errors when building with -Werror (but also -Wno-error=cpp).
3477 lines
106 KiB
C++
3477 lines
106 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/generic/graphicc.cpp
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// Purpose: cairo device context class
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// Author: Stefan Csomor
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// Modified by:
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// Created: 2006-10-03
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// Copyright: (c) 2006 Stefan Csomor
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_GRAPHICS_CONTEXT
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#include "wx/graphics.h"
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#if wxUSE_CAIRO
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#ifndef __WXGTK20__
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// keep cairo.h from defining dllimport as we're defining the symbols inside
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// the wx dll in order to load them dynamically.
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#define cairo_public
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#endif
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#include <cairo.h>
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#include <float.h>
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bool wxCairoInit();
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#ifndef WX_PRECOMP
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#include "wx/bitmap.h"
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#include "wx/icon.h"
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#include "wx/dcclient.h"
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#include "wx/dcmemory.h"
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#include "wx/dcprint.h"
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#include "wx/window.h"
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#endif
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#include "wx/private/graphics.h"
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#include "wx/rawbmp.h"
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#include "wx/vector.h"
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#ifdef __WXMSW__
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#include "wx/msw/enhmeta.h"
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#endif
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using namespace std;
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//-----------------------------------------------------------------------------
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// device context implementation
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//
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// more and more of the dc functionality should be implemented by calling
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// the appropricate wxCairoContext, but we will have to do that step by step
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// also coordinate conversions should be moved to native matrix ops
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//-----------------------------------------------------------------------------
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// we always stock two context states, one at entry, to be able to preserve the
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// state we were called with, the other one after changing to HI Graphics orientation
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// (this one is used for getting back clippings etc)
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//-----------------------------------------------------------------------------
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// wxGraphicsPath implementation
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//-----------------------------------------------------------------------------
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#ifdef __WXMSW__
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// TODO remove this dependency (gdiplus needs the macros)
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#ifndef max
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#define max(a,b) (((a) > (b)) ? (a) : (b))
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#endif
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#ifndef min
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#define min(a,b) (((a) < (b)) ? (a) : (b))
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#endif
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#include <cairo-win32.h>
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// Notice that the order is important: cairo-win32.h includes windows.h which
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// pollutes the global name space with macros so include our own header which
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// #undefines them after it.
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#include "wx/msw/private.h"
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#endif
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#ifdef __WXGTK__
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#ifdef __WXGTK20__
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#include "wx/gtk/private/wrapgtk.h"
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#else // GTK+ 1.x
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#include <gtk/gtk.h>
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#endif
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#include "wx/fontutil.h"
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#ifndef __WXGTK3__
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#include "wx/gtk/dc.h"
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#endif
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#include "wx/gtk/private/object.h"
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#endif
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#ifdef __WXQT__
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#include <QtGui/QPainter>
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#include "wx/qt/dc.h"
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#endif
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#ifdef __WXMAC__
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#include "wx/osx/private.h"
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#include <cairo-quartz.h>
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#endif
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// Helper functions for dealing with alpha pre-multiplication.
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namespace
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{
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inline unsigned char Premultiply(unsigned char alpha, unsigned char data)
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{
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return alpha ? (data * alpha) / 0xff : data;
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}
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inline unsigned char Unpremultiply(unsigned char alpha, unsigned char data)
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{
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return alpha ? (data * 0xff) / alpha : data;
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}
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} // anonymous namespace
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class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
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{
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public :
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wxCairoPathData(wxGraphicsRenderer* renderer, cairo_t* path = NULL);
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~wxCairoPathData();
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virtual wxGraphicsObjectRefData *Clone() const wxOVERRIDE;
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//
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// These are the path primitives from which everything else can be constructed
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//
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// begins a new subpath at (x,y)
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virtual void MoveToPoint( wxDouble x, wxDouble y ) wxOVERRIDE;
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// adds a straight line from the current point to (x,y)
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virtual void AddLineToPoint( wxDouble x, wxDouble y ) wxOVERRIDE;
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// adds a cubic Bezier curve from the current point, using two control points and an end point
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virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) wxOVERRIDE;
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// adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
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virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) wxOVERRIDE ;
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// gets the last point of the current path, (0,0) if not yet set
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virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const wxOVERRIDE;
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// adds another path
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virtual void AddPath( const wxGraphicsPathData* path ) wxOVERRIDE;
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// closes the current sub-path
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virtual void CloseSubpath() wxOVERRIDE;
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//
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// These are convenience functions which - if not available natively will be assembled
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// using the primitives from above
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//
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// appends a rectangle as a new closed subpath
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virtual void AddRectangle(wxDouble x, wxDouble y, wxDouble w, wxDouble h) wxOVERRIDE;
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// appends a circle as a new closed subpath
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virtual void AddCircle(wxDouble x, wxDouble y, wxDouble r) wxOVERRIDE;
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// appends an ellipse as a new closed subpath fitting the passed rectangle
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virtual void AddEllipse(wxDouble x, wxDouble y, wxDouble w, wxDouble h) wxOVERRIDE;
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/*
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// draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
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virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) ;
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*/
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// returns the native path
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virtual void * GetNativePath() const wxOVERRIDE ;
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// give the native path returned by GetNativePath() back (there might be some deallocations necessary)
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virtual void UnGetNativePath(void *p) const wxOVERRIDE;
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// transforms each point of this path by the matrix
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virtual void Transform( const wxGraphicsMatrixData* matrix ) wxOVERRIDE ;
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// gets the bounding box enclosing all points (possibly including control points)
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virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const wxOVERRIDE;
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virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxWINDING_RULE) const wxOVERRIDE;
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private :
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cairo_t* m_pathContext;
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};
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class WXDLLIMPEXP_CORE wxCairoMatrixData : public wxGraphicsMatrixData
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{
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public :
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wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
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virtual ~wxCairoMatrixData() ;
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virtual wxGraphicsObjectRefData *Clone() const wxOVERRIDE ;
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// concatenates the matrix
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virtual void Concat( const wxGraphicsMatrixData *t ) wxOVERRIDE;
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// sets the matrix to the respective values
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virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
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wxDouble tx=0.0, wxDouble ty=0.0) wxOVERRIDE;
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// gets the component valuess of the matrix
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virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL, wxDouble* c=NULL,
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wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const wxOVERRIDE;
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// makes this the inverse matrix
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virtual void Invert() wxOVERRIDE;
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// returns true if the elements of the transformation matrix are equal ?
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virtual bool IsEqual( const wxGraphicsMatrixData* t) const wxOVERRIDE ;
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// return true if this is the identity matrix
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virtual bool IsIdentity() const wxOVERRIDE;
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//
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// transformation
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//
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// add the translation to this matrix
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virtual void Translate( wxDouble dx , wxDouble dy ) wxOVERRIDE;
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// add the scale to this matrix
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virtual void Scale( wxDouble xScale , wxDouble yScale ) wxOVERRIDE;
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// add the rotation to this matrix (radians)
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virtual void Rotate( wxDouble angle ) wxOVERRIDE;
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//
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// apply the transforms
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//
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// applies that matrix to the point
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virtual void TransformPoint( wxDouble *x, wxDouble *y ) const wxOVERRIDE;
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// applies the matrix except for translations
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virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const wxOVERRIDE;
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// returns the native representation
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virtual void * GetNativeMatrix() const wxOVERRIDE;
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private:
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cairo_matrix_t m_matrix ;
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} ;
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// Common base class for pens and brushes.
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class wxCairoPenBrushBaseData : public wxGraphicsObjectRefData
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{
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public:
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wxCairoPenBrushBaseData(wxGraphicsRenderer* renderer,
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const wxColour& col,
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bool isTransparent);
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virtual ~wxCairoPenBrushBaseData();
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virtual void Apply( wxGraphicsContext* context );
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void CreateLinearGradientPattern(wxDouble x1, wxDouble y1,
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wxDouble x2, wxDouble y2,
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const wxGraphicsGradientStops& stops,
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const wxGraphicsMatrix& matrix = wxNullGraphicsMatrix);
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void CreateRadialGradientPattern(wxDouble startX, wxDouble startY,
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wxDouble endX, wxDouble endY, wxDouble radius,
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const wxGraphicsGradientStops& stops,
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const wxGraphicsMatrix& matrix = wxNullGraphicsMatrix);
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protected:
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// Call this to use the given bitmap as stipple. Bitmap must be non-null
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// and valid.
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void InitStipple(wxBitmap* bmp);
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// Call this to use the given hatch style. Hatch style must be valid.
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void InitHatch(wxHatchStyle hatchStyle);
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// common part of Create{Linear,Radial}GradientPattern()
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void AddGradientStops(const wxGraphicsGradientStops& stops);
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double m_red;
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double m_green;
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double m_blue;
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double m_alpha;
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cairo_pattern_t* m_pattern;
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class wxCairoBitmapData* m_bmpdata;
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private:
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// Called once to allocate m_pattern if needed.
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void InitHatchPattern(cairo_t* ctext);
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wxHatchStyle m_hatchStyle;
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wxDECLARE_NO_COPY_CLASS(wxCairoPenBrushBaseData);
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};
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class WXDLLIMPEXP_CORE wxCairoPenData : public wxCairoPenBrushBaseData
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{
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public:
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wxCairoPenData( wxGraphicsRenderer* renderer, const wxGraphicsPenInfo &info );
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~wxCairoPenData();
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void Init();
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virtual void Apply( wxGraphicsContext* context ) wxOVERRIDE;
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wxDouble GetWidth() { return m_width; }
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private :
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double m_width;
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cairo_line_cap_t m_cap;
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cairo_line_join_t m_join;
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int m_count;
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const double *m_lengths;
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double *m_userLengths;
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wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
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};
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class WXDLLIMPEXP_CORE wxCairoBrushData : public wxCairoPenBrushBaseData
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{
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public:
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wxCairoBrushData( wxGraphicsRenderer* renderer );
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wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
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protected:
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void Init();
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};
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class wxCairoFontData : public wxGraphicsObjectRefData
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{
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public:
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wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
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wxCairoFontData(wxGraphicsRenderer* renderer,
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double sizeInPixels,
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const wxString& facename,
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int flags,
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const wxColour& col);
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~wxCairoFontData();
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void Apply( wxGraphicsContext* context );
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#ifdef __WXGTK__
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const wxFont& GetFont() const { return m_wxfont; }
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#endif
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private :
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void InitColour(const wxColour& col);
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void InitFontComponents(const wxString& facename,
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cairo_font_slant_t slant,
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cairo_font_weight_t weight);
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double m_size;
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double m_red;
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double m_green;
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double m_blue;
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double m_alpha;
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#ifdef __WXMAC__
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cairo_font_face_t *m_font;
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#elif defined(__WXGTK__)
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wxFont m_wxfont;
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#endif
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// These members are used when the font is created from its face name and
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// flags (and not from wxFont) and also even when creating it from wxFont
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// on the platforms not covered above.
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//
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// Notice that we can't use cairo_font_face_t instead of storing those,
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// even though it would be simpler and need less #ifdefs, because
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// cairo_toy_font_face_create() that we'd need to create it is only
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// available in Cairo 1.8 and we require just 1.2 currently. If we do drop
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// support for < 1.8 versions in the future it would be definitely better
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// to use cairo_toy_font_face_create() instead.
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wxCharBuffer m_fontName;
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cairo_font_slant_t m_slant;
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cairo_font_weight_t m_weight;
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};
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class wxCairoBitmapData : public wxGraphicsBitmapData
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{
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public:
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wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
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#if wxUSE_IMAGE
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wxCairoBitmapData(wxGraphicsRenderer* renderer, const wxImage& image);
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#endif // wxUSE_IMAGE
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wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
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~wxCairoBitmapData();
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cairo_surface_t* GetCairoSurface() { return m_surface; }
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cairo_pattern_t* GetCairoPattern() { return m_pattern; }
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void* GetNativeBitmap() const wxOVERRIDE { return m_surface; }
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wxSize GetSize() { return wxSize(m_width, m_height); }
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#if wxUSE_IMAGE
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wxImage ConvertToImage() const;
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#endif // wxUSE_IMAGE
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private :
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// Allocate m_buffer for the bitmap of the given size in the given format.
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//
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// Returns the stride used for the buffer.
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int InitBuffer(int width, int height, cairo_format_t format);
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// Really create the surface using the buffer (which was supposed to be
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// filled since InitBuffer() call).
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void InitSurface(cairo_format_t format, int stride);
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cairo_surface_t* m_surface;
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cairo_pattern_t* m_pattern;
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int m_width;
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int m_height;
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unsigned char* m_buffer;
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};
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class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
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{
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public:
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wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
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wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
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#if wxUSE_PRINTING_ARCHITECTURE
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wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
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#endif
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#ifdef __WXGTK__
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wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window );
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#endif
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#ifdef __WXMSW__
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#if wxUSE_ENH_METAFILE
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wxCairoContext(wxGraphicsRenderer* renderer, const wxEnhMetaFileDC& dc);
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#endif // wxUSE_ENH_METAFILE
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wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
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wxCairoContext(wxGraphicsRenderer* renderer, HWND hWnd);
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#endif
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wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
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wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
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// If this ctor is used, Init() must be called by the derived class later.
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wxCairoContext( wxGraphicsRenderer* renderer );
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virtual ~wxCairoContext();
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virtual bool ShouldOffset() const wxOVERRIDE
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{
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if ( !m_enableOffset )
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return false;
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int penwidth = 0 ;
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if ( !m_pen.IsNull() )
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{
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penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
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if ( penwidth == 0 )
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penwidth = 1;
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}
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return ( penwidth % 2 ) == 1;
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}
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virtual void Clip( const wxRegion ®ion ) wxOVERRIDE;
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// clips drawings to the rect
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virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) wxOVERRIDE;
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// resets the clipping to original extent
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virtual void ResetClip() wxOVERRIDE;
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// returns bounding box of the clipping region
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virtual void GetClipBox(wxDouble* x, wxDouble* y, wxDouble* w, wxDouble* h) wxOVERRIDE;
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virtual void * GetNativeContext() wxOVERRIDE;
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virtual bool SetAntialiasMode(wxAntialiasMode antialias) wxOVERRIDE;
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virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation) wxOVERRIDE;
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virtual bool SetCompositionMode(wxCompositionMode op) wxOVERRIDE;
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virtual void BeginLayer(wxDouble opacity) wxOVERRIDE;
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virtual void EndLayer() wxOVERRIDE;
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virtual void StrokePath( const wxGraphicsPath& p ) wxOVERRIDE;
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virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE ) wxOVERRIDE;
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virtual void ClearRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) wxOVERRIDE;
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virtual void DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h) wxOVERRIDE;
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virtual void Translate( wxDouble dx , wxDouble dy ) wxOVERRIDE;
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virtual void Scale( wxDouble xScale , wxDouble yScale ) wxOVERRIDE;
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virtual void Rotate( wxDouble angle ) wxOVERRIDE;
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// concatenates this transform with the current transform of this context
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virtual void ConcatTransform( const wxGraphicsMatrix& matrix ) wxOVERRIDE;
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// sets the transform of this context
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virtual void SetTransform( const wxGraphicsMatrix& matrix ) wxOVERRIDE;
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// gets the matrix of this context
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virtual wxGraphicsMatrix GetTransform() const wxOVERRIDE;
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virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) wxOVERRIDE;
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virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) wxOVERRIDE;
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virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) wxOVERRIDE;
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virtual void PushState() wxOVERRIDE;
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virtual void PopState() wxOVERRIDE;
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virtual void Flush() wxOVERRIDE;
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|
|
virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
|
|
wxDouble *descent, wxDouble *externalLeading ) const wxOVERRIDE;
|
|
virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const wxOVERRIDE;
|
|
|
|
protected:
|
|
virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y ) wxOVERRIDE;
|
|
|
|
void Init(cairo_t *context);
|
|
|
|
enum ApplyTransformMode { Apply_directly, Apply_scaled_dev_origin };
|
|
void ApplyTransformFromDC(const wxDC& dc, ApplyTransformMode mode = Apply_directly);
|
|
|
|
#ifdef __WXQT__
|
|
QPainter* m_qtPainter;
|
|
QImage* m_qtImage;
|
|
cairo_surface_t* m_qtSurface;
|
|
#endif
|
|
#ifdef __WXMSW__
|
|
cairo_surface_t* m_mswSurface;
|
|
WindowHDC m_mswWindowHDC;
|
|
int m_mswStateSavedDC;
|
|
#endif
|
|
#ifdef __WXGTK__
|
|
// Tiny helper actually applying the font. It's convenient because it can
|
|
// be called with a temporary wxFont, as we're going to make a copy of its
|
|
// Pango font description inside this function before the font object is
|
|
// destroyed.
|
|
//
|
|
// It's also all we need for GTK < 3.
|
|
static void DoApplyFont(PangoLayout* layout, const wxFont& font)
|
|
{
|
|
pango_layout_set_font_description
|
|
(
|
|
layout,
|
|
font.GetNativeFontInfo()->description
|
|
);
|
|
}
|
|
|
|
#ifdef __WXGTK3__
|
|
// This factor must be applied to the font before actually using it, for
|
|
// consistency with the text drawn by GTK itself.
|
|
float m_fontScalingFactor;
|
|
|
|
// Function applying the Pango font description for the given font scaled by
|
|
// the font scaling factor if necessary to the specified layout.
|
|
void ApplyFont(PangoLayout* layout, const wxFont& font) const
|
|
{
|
|
// Only scale the font if we really need to do it.
|
|
DoApplyFont(layout, m_fontScalingFactor == 1.0f
|
|
? font
|
|
: font.Scaled(m_fontScalingFactor));
|
|
}
|
|
#else // GTK < 3
|
|
// Provide the same function even if it does nothing in this case to keep
|
|
// the same code for all GTK versions.
|
|
void ApplyFont(PangoLayout* layout, const wxFont& font) const
|
|
{
|
|
DoApplyFont(layout, font);
|
|
}
|
|
#endif // __WXGTK3__
|
|
#endif // __WXGTK__
|
|
|
|
private:
|
|
cairo_t* m_context;
|
|
cairo_matrix_t m_internalTransform;
|
|
|
|
wxVector<float> m_layerOpacities;
|
|
|
|
wxDECLARE_NO_COPY_CLASS(wxCairoContext);
|
|
};
|
|
|
|
#if wxUSE_IMAGE
|
|
// ----------------------------------------------------------------------------
|
|
// wxCairoImageContext: context associated with a wxImage.
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class wxCairoImageContext : public wxCairoContext
|
|
{
|
|
public:
|
|
wxCairoImageContext(wxGraphicsRenderer* renderer, wxImage& image) :
|
|
wxCairoContext(renderer),
|
|
m_image(image),
|
|
m_data(renderer, image)
|
|
{
|
|
Init(cairo_create(m_data.GetCairoSurface()));
|
|
}
|
|
|
|
virtual ~wxCairoImageContext()
|
|
{
|
|
Flush();
|
|
}
|
|
|
|
virtual void Flush() wxOVERRIDE
|
|
{
|
|
m_image = m_data.ConvertToImage();
|
|
}
|
|
|
|
private:
|
|
wxImage& m_image;
|
|
wxCairoBitmapData m_data;
|
|
|
|
wxDECLARE_NO_COPY_CLASS(wxCairoImageContext);
|
|
};
|
|
#endif // wxUSE_IMAGE
|
|
|
|
#ifdef __WXMSW__
|
|
class wxCairoMeasuringContext : public wxCairoContext
|
|
{
|
|
public:
|
|
wxCairoMeasuringContext(wxGraphicsRenderer* renderer)
|
|
: wxCairoContext(renderer, m_hdc = ::GetDC(NULL))
|
|
{
|
|
}
|
|
|
|
virtual ~wxCairoMeasuringContext()
|
|
{
|
|
::ReleaseDC(NULL, m_hdc);
|
|
}
|
|
|
|
private:
|
|
HDC m_hdc;
|
|
};
|
|
#endif // __WXMSW__
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxCairoPenBrushBaseData implementation
|
|
//-----------------------------------------------------------------------------
|
|
|
|
wxCairoPenBrushBaseData::wxCairoPenBrushBaseData(wxGraphicsRenderer* renderer,
|
|
const wxColour& col,
|
|
bool isTransparent)
|
|
: wxGraphicsObjectRefData(renderer)
|
|
{
|
|
m_hatchStyle = wxHATCHSTYLE_INVALID;
|
|
m_pattern = NULL;
|
|
m_bmpdata = NULL;
|
|
|
|
if ( isTransparent || !col.IsOk() )
|
|
{
|
|
m_red =
|
|
m_green =
|
|
m_blue =
|
|
m_alpha = 0;
|
|
}
|
|
else // non-transparent
|
|
{
|
|
m_red = col.Red()/255.0;
|
|
m_green = col.Green()/255.0;
|
|
m_blue = col.Blue()/255.0;
|
|
m_alpha = col.Alpha()/255.0;
|
|
}
|
|
}
|
|
|
|
wxCairoPenBrushBaseData::~wxCairoPenBrushBaseData()
|
|
{
|
|
if (m_bmpdata)
|
|
{
|
|
// Deleting the bitmap data also deletes the pattern referenced by
|
|
// m_pattern, so set it to NULL to avoid deleting it twice.
|
|
delete m_bmpdata;
|
|
m_pattern = NULL;
|
|
}
|
|
if (m_pattern)
|
|
cairo_pattern_destroy(m_pattern);
|
|
}
|
|
|
|
void wxCairoPenBrushBaseData::InitHatchPattern(cairo_t* ctext)
|
|
{
|
|
cairo_surface_t* const
|
|
surface = cairo_surface_create_similar(
|
|
cairo_get_target(ctext), CAIRO_CONTENT_COLOR_ALPHA, 10, 10
|
|
);
|
|
|
|
cairo_t* const cr = cairo_create(surface);
|
|
cairo_set_line_cap(cr, CAIRO_LINE_CAP_SQUARE);
|
|
cairo_set_line_width(cr, 1);
|
|
cairo_set_line_join(cr,CAIRO_LINE_JOIN_MITER);
|
|
|
|
switch ( m_hatchStyle )
|
|
{
|
|
case wxHATCHSTYLE_CROSS:
|
|
cairo_move_to(cr, 5, 0);
|
|
cairo_line_to(cr, 5, 10);
|
|
cairo_move_to(cr, 0, 5);
|
|
cairo_line_to(cr, 10, 5);
|
|
break;
|
|
|
|
case wxHATCHSTYLE_BDIAGONAL:
|
|
cairo_move_to(cr, 0, 10);
|
|
cairo_line_to(cr, 10, 0);
|
|
break;
|
|
|
|
case wxHATCHSTYLE_FDIAGONAL:
|
|
cairo_move_to(cr, 0, 0);
|
|
cairo_line_to(cr, 10, 10);
|
|
break;
|
|
|
|
case wxHATCHSTYLE_CROSSDIAG:
|
|
cairo_move_to(cr, 0, 0);
|
|
cairo_line_to(cr, 10, 10);
|
|
cairo_move_to(cr, 10, 0);
|
|
cairo_line_to(cr, 0, 10);
|
|
break;
|
|
|
|
case wxHATCHSTYLE_HORIZONTAL:
|
|
cairo_move_to(cr, 0, 5);
|
|
cairo_line_to(cr, 10, 5);
|
|
break;
|
|
|
|
case wxHATCHSTYLE_VERTICAL:
|
|
cairo_move_to(cr, 5, 0);
|
|
cairo_line_to(cr, 5, 10);
|
|
break;
|
|
|
|
default:
|
|
wxFAIL_MSG(wxS("Invalid hatch pattern style."));
|
|
}
|
|
|
|
cairo_set_source_rgba(cr, m_red, m_green, m_blue, m_alpha);
|
|
cairo_stroke(cr);
|
|
|
|
cairo_destroy(cr);
|
|
|
|
m_pattern = cairo_pattern_create_for_surface(surface);
|
|
cairo_surface_destroy(surface);
|
|
cairo_pattern_set_extend(m_pattern, CAIRO_EXTEND_REPEAT);
|
|
}
|
|
|
|
void wxCairoPenBrushBaseData::InitStipple(wxBitmap* bmp)
|
|
{
|
|
wxCHECK_RET( bmp && bmp->IsOk(), wxS("Invalid stippled bitmap") );
|
|
|
|
m_bmpdata = new wxCairoBitmapData(GetRenderer(), *bmp);
|
|
m_pattern = m_bmpdata->GetCairoPattern();
|
|
cairo_pattern_set_extend(m_pattern, CAIRO_EXTEND_REPEAT);
|
|
}
|
|
|
|
void wxCairoPenBrushBaseData::InitHatch(wxHatchStyle hatchStyle)
|
|
{
|
|
// We can't create m_pattern right now as we don't have the Cairo context
|
|
// needed for it, so just remember that we need to do it.
|
|
m_hatchStyle = hatchStyle;
|
|
}
|
|
|
|
void wxCairoPenBrushBaseData::Apply( wxGraphicsContext* context )
|
|
{
|
|
cairo_t* const ctext = (cairo_t*) context->GetNativeContext();
|
|
|
|
if ( m_hatchStyle != wxHATCHSTYLE_INVALID && !m_pattern )
|
|
InitHatchPattern(ctext);
|
|
|
|
if ( m_pattern )
|
|
cairo_set_source(ctext, m_pattern);
|
|
else
|
|
cairo_set_source_rgba(ctext, m_red, m_green, m_blue, m_alpha);
|
|
}
|
|
|
|
void wxCairoPenBrushBaseData::AddGradientStops(const wxGraphicsGradientStops& stops)
|
|
{
|
|
// loop over all the stops, they include the beginning and ending ones
|
|
const unsigned numStops = stops.GetCount();
|
|
for ( unsigned n = 0; n < numStops; n++ )
|
|
{
|
|
const wxGraphicsGradientStop stop = stops.Item(n);
|
|
|
|
const wxColour col = stop.GetColour();
|
|
|
|
cairo_pattern_add_color_stop_rgba
|
|
(
|
|
m_pattern,
|
|
stop.GetPosition(),
|
|
col.Red()/255.0,
|
|
col.Green()/255.0,
|
|
col.Blue()/255.0,
|
|
col.Alpha()/255.0
|
|
);
|
|
}
|
|
|
|
wxASSERT_MSG(cairo_pattern_status(m_pattern) == CAIRO_STATUS_SUCCESS,
|
|
wxT("Couldn't create cairo pattern"));
|
|
}
|
|
|
|
void
|
|
wxCairoPenBrushBaseData::CreateLinearGradientPattern(wxDouble x1, wxDouble y1,
|
|
wxDouble x2, wxDouble y2,
|
|
const wxGraphicsGradientStops& stops,
|
|
const wxGraphicsMatrix& matrix)
|
|
{
|
|
m_pattern = cairo_pattern_create_linear(x1,y1,x2,y2);
|
|
|
|
if ( !matrix.IsNull() )
|
|
{
|
|
cairo_matrix_t m = *((cairo_matrix_t*) matrix.GetNativeMatrix());
|
|
cairo_pattern_set_matrix(m_pattern, &m);
|
|
}
|
|
|
|
AddGradientStops(stops);
|
|
}
|
|
|
|
void
|
|
wxCairoPenBrushBaseData::CreateRadialGradientPattern(wxDouble startX, wxDouble startY,
|
|
wxDouble endX, wxDouble endY,
|
|
wxDouble radius,
|
|
const wxGraphicsGradientStops& stops,
|
|
const wxGraphicsMatrix& matrix)
|
|
{
|
|
m_pattern = cairo_pattern_create_radial(startX,startY,0.0,endX,endY,radius);
|
|
|
|
if ( !matrix.IsNull() )
|
|
{
|
|
cairo_matrix_t m = *((cairo_matrix_t*) matrix.GetNativeMatrix());
|
|
cairo_pattern_set_matrix(m_pattern, &m);
|
|
}
|
|
|
|
AddGradientStops(stops);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// wxCairoPenData implementation
|
|
//-----------------------------------------------------------------------------
|
|
|
|
wxCairoPenData::~wxCairoPenData()
|
|
{
|
|
delete[] m_userLengths;
|
|
}
|
|
|
|
void wxCairoPenData::Init()
|
|
{
|
|
m_pattern = NULL;
|
|
m_lengths = NULL;
|
|
m_userLengths = NULL;
|
|
m_width = 0;
|
|
m_count = 0;
|
|
}
|
|
|
|
wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxGraphicsPenInfo &info )
|
|
: wxCairoPenBrushBaseData(renderer, info.GetColour(), info.IsTransparent())
|
|
{
|
|
Init();
|
|
m_width = info.GetWidth();
|
|
if (m_width <= 0.0)
|
|
m_width = 0.1;
|
|
|
|
switch ( info.GetCap() )
|
|
{
|
|
case wxCAP_ROUND :
|
|
m_cap = CAIRO_LINE_CAP_ROUND;
|
|
break;
|
|
|
|
case wxCAP_PROJECTING :
|
|
m_cap = CAIRO_LINE_CAP_SQUARE;
|
|
break;
|
|
|
|
case wxCAP_BUTT :
|
|
m_cap = CAIRO_LINE_CAP_BUTT;
|
|
break;
|
|
|
|
default :
|
|
m_cap = CAIRO_LINE_CAP_BUTT;
|
|
break;
|
|
}
|
|
|
|
switch ( info.GetJoin() )
|
|
{
|
|
case wxJOIN_BEVEL :
|
|
m_join = CAIRO_LINE_JOIN_BEVEL;
|
|
break;
|
|
|
|
case wxJOIN_MITER :
|
|
m_join = CAIRO_LINE_JOIN_MITER;
|
|
break;
|
|
|
|
case wxJOIN_ROUND :
|
|
m_join = CAIRO_LINE_JOIN_ROUND;
|
|
break;
|
|
|
|
default :
|
|
m_join = CAIRO_LINE_JOIN_MITER;
|
|
break;
|
|
}
|
|
|
|
const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
|
|
const double dotted[] =
|
|
{
|
|
dashUnit , dashUnit + 2.0
|
|
};
|
|
static const double short_dashed[] =
|
|
{
|
|
9.0 , 6.0
|
|
};
|
|
static const double dashed[] =
|
|
{
|
|
19.0 , 9.0
|
|
};
|
|
static const double dotted_dashed[] =
|
|
{
|
|
9.0 , 6.0 , 3.0 , 3.0
|
|
};
|
|
|
|
switch ( info.GetStyle() )
|
|
{
|
|
case wxPENSTYLE_SOLID :
|
|
// Non-RGB colours, which may e.g. appear under wxOSX for wxColours
|
|
// with NSColor backend, are not supported by Cairo and have to be
|
|
// handled in a special way.
|
|
if ( !info.GetColour().IsSolid() )
|
|
{
|
|
#if defined(__WXOSX_COCOA__)
|
|
// Under wxOSX, non-solid NSColors are actually represented
|
|
// by pattern images and therefore a wxPen with non-solid
|
|
// colour and wxPENSTYLE_SOLID style can be converted
|
|
// to a stiple (a surface pattern).
|
|
|
|
// Create a stiple bitmap from NSColor's pattern image
|
|
wxBitmap bmp(info.GetColour().OSXGetNSPatternImage());
|
|
InitStipple(&bmp);
|
|
#else
|
|
wxFAIL_MSG( "Pen with non-solid colour is not supported." );
|
|
#endif
|
|
}
|
|
|
|
break;
|
|
|
|
case wxPENSTYLE_DOT :
|
|
m_count = WXSIZEOF(dotted);
|
|
m_userLengths = new double[ m_count ] ;
|
|
memcpy( m_userLengths, dotted, sizeof(dotted) );
|
|
m_lengths = m_userLengths;
|
|
break;
|
|
|
|
case wxPENSTYLE_LONG_DASH :
|
|
m_lengths = dashed ;
|
|
m_count = WXSIZEOF(dashed);
|
|
break;
|
|
|
|
case wxPENSTYLE_SHORT_DASH :
|
|
m_lengths = short_dashed ;
|
|
m_count = WXSIZEOF(short_dashed);
|
|
break;
|
|
|
|
case wxPENSTYLE_DOT_DASH :
|
|
m_lengths = dotted_dashed ;
|
|
m_count = WXSIZEOF(dotted_dashed);
|
|
break;
|
|
|
|
case wxPENSTYLE_USER_DASH :
|
|
{
|
|
wxDash *wxdashes ;
|
|
m_count = info.GetDashes( &wxdashes ) ;
|
|
if ((wxdashes != NULL) && (m_count > 0))
|
|
{
|
|
m_userLengths = new double[m_count] ;
|
|
for ( int i = 0 ; i < m_count ; ++i )
|
|
{
|
|
m_userLengths[i] = wxdashes[i] * dashUnit ;
|
|
|
|
if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
|
|
m_userLengths[i] = dashUnit + 2.0 ;
|
|
else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
|
|
m_userLengths[i] = dashUnit ;
|
|
}
|
|
}
|
|
m_lengths = m_userLengths ;
|
|
}
|
|
break;
|
|
|
|
case wxPENSTYLE_STIPPLE :
|
|
case wxPENSTYLE_STIPPLE_MASK :
|
|
case wxPENSTYLE_STIPPLE_MASK_OPAQUE :
|
|
{
|
|
wxBitmap stipple = info.GetStipple();
|
|
InitStipple(&stipple);
|
|
}
|
|
break;
|
|
|
|
default :
|
|
if ( info.GetStyle() >= wxPENSTYLE_FIRST_HATCH
|
|
&& info.GetStyle() <= wxPENSTYLE_LAST_HATCH )
|
|
{
|
|
wxASSERT_MSG( info.GetColour().IsSolid(),
|
|
"Pen with non-solid colour is not supported." );
|
|
InitHatch(static_cast<wxHatchStyle>(info.GetStyle()));
|
|
}
|
|
break;
|
|
}
|
|
|
|
switch ( info.GetGradientType() )
|
|
{
|
|
case wxGRADIENT_NONE:
|
|
break;
|
|
|
|
case wxGRADIENT_LINEAR:
|
|
CreateLinearGradientPattern(info.GetX1(), info.GetY1(),
|
|
info.GetX2(), info.GetY2(),
|
|
info.GetStops(),
|
|
info.GetMatrix());
|
|
break;
|
|
|
|
case wxGRADIENT_RADIAL:
|
|
CreateRadialGradientPattern(info.GetStartX(), info.GetStartY(),
|
|
info.GetEndX(), info.GetEndY(),
|
|
info.GetRadius(),
|
|
info.GetStops(),
|
|
info.GetMatrix());
|
|
break;
|
|
}
|
|
}
|
|
|
|
void wxCairoPenData::Apply( wxGraphicsContext* context )
|
|
{
|
|
wxCairoPenBrushBaseData::Apply(context);
|
|
|
|
cairo_t * ctext = (cairo_t*) context->GetNativeContext();
|
|
cairo_set_line_width(ctext,m_width);
|
|
cairo_set_line_cap(ctext,m_cap);
|
|
cairo_set_line_join(ctext,m_join);
|
|
cairo_set_dash(ctext, m_lengths, m_count, 0);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// wxCairoBrushData implementation
|
|
//-----------------------------------------------------------------------------
|
|
|
|
wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
|
|
: wxCairoPenBrushBaseData(renderer, wxColour(), true /* transparent */)
|
|
{
|
|
Init();
|
|
}
|
|
|
|
wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer,
|
|
const wxBrush &brush )
|
|
: wxCairoPenBrushBaseData(renderer, brush.GetColour(), brush.IsTransparent())
|
|
{
|
|
Init();
|
|
|
|
switch ( brush.GetStyle() )
|
|
{
|
|
case wxBRUSHSTYLE_STIPPLE:
|
|
case wxBRUSHSTYLE_STIPPLE_MASK:
|
|
case wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE:
|
|
InitStipple(brush.GetStipple());
|
|
break;
|
|
|
|
case wxBRUSHSTYLE_SOLID:
|
|
// Non-RGB colours, which may e.g. appear under wxOSX for wxColours
|
|
// with NSColor backend, are not supported by Cairo and have to be
|
|
// handled in a special way.
|
|
if ( !brush.GetColour().IsSolid() )
|
|
{
|
|
#if defined(__WXOSX_COCOA__)
|
|
// Under wxOSX, non-solid NSColors are actually represented
|
|
// by pattern images and therefore a wxBrush with non-solid
|
|
// colour and wxBRUSHSTYLE_SOLID style can be converted
|
|
// to a stiple (a surface pattern).
|
|
|
|
// Create a stiple bitmap from NSColor's pattern image
|
|
wxBitmap bmp(brush.GetColour().OSXGetNSPatternImage());
|
|
InitStipple(&bmp);
|
|
#else
|
|
wxFAIL_MSG( "Brush with non-solid colour is not supported." );
|
|
#endif
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if ( brush.IsHatch() )
|
|
{
|
|
wxASSERT_MSG( brush.GetColour().IsSolid(),
|
|
"Brush with non-solid colour is not supported." );
|
|
InitHatch(static_cast<wxHatchStyle>(brush.GetStyle()));
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void wxCairoBrushData::Init()
|
|
{
|
|
m_pattern = NULL;
|
|
m_bmpdata = NULL;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// wxCairoFontData implementation
|
|
//-----------------------------------------------------------------------------
|
|
|
|
void wxCairoFontData::InitColour(const wxColour& col)
|
|
{
|
|
m_red = col.Red()/255.0;
|
|
m_green = col.Green()/255.0;
|
|
m_blue = col.Blue()/255.0;
|
|
m_alpha = col.Alpha()/255.0;
|
|
}
|
|
|
|
void
|
|
wxCairoFontData::InitFontComponents(const wxString& facename,
|
|
cairo_font_slant_t slant,
|
|
cairo_font_weight_t weight)
|
|
{
|
|
m_fontName = facename.mb_str(wxConvUTF8);
|
|
m_slant = slant;
|
|
m_weight = weight;
|
|
}
|
|
|
|
wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
|
|
const wxColour& col )
|
|
: wxGraphicsObjectRefData(renderer)
|
|
#ifdef __WXGTK__
|
|
, m_wxfont(font)
|
|
#endif
|
|
{
|
|
InitColour(col);
|
|
|
|
m_size = font.GetPointSize();
|
|
|
|
#ifdef __WXMAC__
|
|
m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
|
|
#elif defined(__WXGTK__)
|
|
#else
|
|
InitFontComponents
|
|
(
|
|
font.GetFaceName(),
|
|
font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC
|
|
: CAIRO_FONT_SLANT_NORMAL,
|
|
font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD
|
|
: CAIRO_FONT_WEIGHT_NORMAL
|
|
);
|
|
#endif
|
|
}
|
|
|
|
wxCairoFontData::wxCairoFontData(wxGraphicsRenderer* renderer,
|
|
double sizeInPixels,
|
|
const wxString& facename,
|
|
int flags,
|
|
const wxColour& col) :
|
|
wxGraphicsObjectRefData(renderer)
|
|
#ifdef __WXGTK__
|
|
, m_wxfont(wxFontInfo(wxSize(sizeInPixels, sizeInPixels))
|
|
.AllFlags(flags).FaceName(facename))
|
|
#endif
|
|
{
|
|
InitColour(col);
|
|
|
|
// Resolution for Cairo image surfaces is 72 DPI meaning that the sizes in
|
|
// points and pixels are identical, so we can just pass the size in pixels
|
|
// directly to cairo_set_font_size().
|
|
m_size = sizeInPixels;
|
|
|
|
#if defined(__WXMAC__)
|
|
m_font = NULL;
|
|
#endif
|
|
|
|
// There is no need to set m_underlined under wxGTK in this case, it can
|
|
// only be used if m_font != NULL.
|
|
|
|
InitFontComponents
|
|
(
|
|
facename,
|
|
flags & wxFONTFLAG_ITALIC ? CAIRO_FONT_SLANT_ITALIC
|
|
: CAIRO_FONT_SLANT_NORMAL,
|
|
flags & wxFONTFLAG_BOLD ? CAIRO_FONT_WEIGHT_BOLD
|
|
: CAIRO_FONT_WEIGHT_NORMAL
|
|
);
|
|
}
|
|
|
|
wxCairoFontData::~wxCairoFontData()
|
|
{
|
|
#ifdef __WXMAC__
|
|
if ( m_font )
|
|
cairo_font_face_destroy( m_font );
|
|
#endif
|
|
}
|
|
|
|
void wxCairoFontData::Apply( wxGraphicsContext* context )
|
|
{
|
|
cairo_t * ctext = (cairo_t*) context->GetNativeContext();
|
|
cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
|
|
#ifdef __WXGTK__
|
|
if (m_wxfont.IsOk())
|
|
{
|
|
// Nothing to do, the caller uses Pango layout functions to do
|
|
// everything.
|
|
return;
|
|
}
|
|
#elif defined(__WXMAC__)
|
|
if ( m_font )
|
|
{
|
|
cairo_set_font_face(ctext, m_font);
|
|
cairo_set_font_size(ctext, m_size );
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
// If we get here, we must be on a platform without native font support or
|
|
// we're using toy Cairo API even under wxGTK/wxMac.
|
|
cairo_select_font_face(ctext, m_fontName, m_slant, m_weight );
|
|
cairo_set_font_size(ctext, m_size );
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// wxCairoPathData implementation
|
|
//-----------------------------------------------------------------------------
|
|
|
|
wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
|
|
: wxGraphicsPathData(renderer)
|
|
{
|
|
if (pathcontext)
|
|
{
|
|
m_pathContext = pathcontext;
|
|
}
|
|
else
|
|
{
|
|
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
|
|
m_pathContext = cairo_create(surface);
|
|
cairo_surface_destroy (surface);
|
|
}
|
|
}
|
|
|
|
wxCairoPathData::~wxCairoPathData()
|
|
{
|
|
cairo_destroy(m_pathContext);
|
|
}
|
|
|
|
wxGraphicsObjectRefData *wxCairoPathData::Clone() const
|
|
{
|
|
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
|
|
cairo_t* pathcontext = cairo_create(surface);
|
|
cairo_surface_destroy (surface);
|
|
|
|
cairo_path_t* path = cairo_copy_path(m_pathContext);
|
|
cairo_append_path(pathcontext, path);
|
|
cairo_path_destroy(path);
|
|
return new wxCairoPathData( GetRenderer() ,pathcontext);
|
|
}
|
|
|
|
|
|
void* wxCairoPathData::GetNativePath() const
|
|
{
|
|
return cairo_copy_path(m_pathContext) ;
|
|
}
|
|
|
|
void wxCairoPathData::UnGetNativePath(void *p) const
|
|
{
|
|
cairo_path_destroy((cairo_path_t*)p);
|
|
}
|
|
|
|
//
|
|
// The Primitives
|
|
//
|
|
|
|
void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
|
|
{
|
|
cairo_move_to(m_pathContext,x,y);
|
|
}
|
|
|
|
void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
|
|
{
|
|
cairo_line_to(m_pathContext,x,y);
|
|
}
|
|
|
|
void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
|
|
{
|
|
cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
|
|
cairo_append_path(m_pathContext, p);
|
|
UnGetNativePath(p);
|
|
}
|
|
|
|
void wxCairoPathData::CloseSubpath()
|
|
{
|
|
cairo_close_path(m_pathContext);
|
|
}
|
|
|
|
void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
|
|
{
|
|
cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
|
|
}
|
|
|
|
// gets the last point of the current path, (0,0) if not yet set
|
|
void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
|
|
{
|
|
double dx,dy;
|
|
cairo_get_current_point(m_pathContext,&dx,&dy);
|
|
if (x)
|
|
*x = dx;
|
|
if (y)
|
|
*y = dy;
|
|
}
|
|
|
|
void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
|
|
{
|
|
// as clockwise means positive in our system (y pointing downwards)
|
|
// TODO make this interpretation dependent of the
|
|
// real device trans
|
|
if ( clockwise||(endAngle-startAngle)>=2*M_PI)
|
|
cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
|
|
else
|
|
cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
|
|
}
|
|
|
|
// transforms each point of this path by the matrix
|
|
void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
|
|
{
|
|
// as we don't have a true path object, we have to apply the inverse
|
|
// matrix to the context
|
|
cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
|
|
cairo_matrix_invert( &m );
|
|
cairo_transform(m_pathContext,&m);
|
|
}
|
|
|
|
// gets the bounding box enclosing all points (possibly including control points)
|
|
void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
|
|
{
|
|
double x1,y1,x2,y2;
|
|
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 6, 0)
|
|
if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 6, 0) )
|
|
{
|
|
cairo_path_extents(m_pathContext, &x1, &y1, &x2, &y2);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
cairo_stroke_extents(m_pathContext, &x1, &y1, &x2, &y2);
|
|
}
|
|
|
|
if ( x2 < x1 )
|
|
{
|
|
*x = x2;
|
|
*w = x1-x2;
|
|
}
|
|
else
|
|
{
|
|
*x = x1;
|
|
*w = x2-x1;
|
|
}
|
|
|
|
if( y2 < y1 )
|
|
{
|
|
*y = y2;
|
|
*h = y1-y2;
|
|
}
|
|
else
|
|
{
|
|
*y = y1;
|
|
*h = y2-y1;
|
|
}
|
|
}
|
|
|
|
bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
|
|
{
|
|
cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
|
|
return cairo_in_fill( m_pathContext, x, y) != 0;
|
|
}
|
|
|
|
// Convenience functions
|
|
|
|
void wxCairoPathData::AddRectangle(wxDouble x, wxDouble y, wxDouble w, wxDouble h)
|
|
{
|
|
cairo_rectangle(m_pathContext, x, y, w, h);
|
|
}
|
|
|
|
void wxCairoPathData::AddCircle(wxDouble x, wxDouble y, wxDouble r)
|
|
{
|
|
cairo_move_to(m_pathContext, x+r, y);
|
|
cairo_arc(m_pathContext, x, y, r, 0.0, 2*M_PI);
|
|
cairo_close_path(m_pathContext);
|
|
}
|
|
|
|
void wxCairoPathData::AddEllipse(wxDouble x, wxDouble y, wxDouble w, wxDouble h)
|
|
{
|
|
cairo_move_to(m_pathContext, x+w, y+h/2.0);
|
|
w /= 2.0;
|
|
h /= 2.0;
|
|
cairo_save(m_pathContext);
|
|
cairo_translate(m_pathContext, x+w, y+h);
|
|
cairo_scale(m_pathContext, w, h);
|
|
cairo_arc(m_pathContext, 0.0, 0.0, 1.0, 0.0, 2*M_PI);
|
|
cairo_restore(m_pathContext);
|
|
cairo_close_path(m_pathContext);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// wxCairoMatrixData implementation
|
|
//-----------------------------------------------------------------------------
|
|
|
|
wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
|
|
: wxGraphicsMatrixData(renderer)
|
|
{
|
|
if ( matrix )
|
|
m_matrix = *matrix;
|
|
}
|
|
|
|
wxCairoMatrixData::~wxCairoMatrixData()
|
|
{
|
|
// nothing to do
|
|
}
|
|
|
|
wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
|
|
{
|
|
return new wxCairoMatrixData(GetRenderer(),&m_matrix);
|
|
}
|
|
|
|
// concatenates the matrix
|
|
void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
|
|
{
|
|
// The parameter matrix (t) is the multiplicand.
|
|
cairo_matrix_multiply(&m_matrix, (cairo_matrix_t*) t->GetNativeMatrix(), &m_matrix);
|
|
}
|
|
|
|
// sets the matrix to the respective values
|
|
void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
|
|
wxDouble tx, wxDouble ty)
|
|
{
|
|
cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
|
|
}
|
|
|
|
// gets the component valuess of the matrix
|
|
void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b, wxDouble* c,
|
|
wxDouble* d, wxDouble* tx, wxDouble* ty) const
|
|
{
|
|
if (a) *a = m_matrix.xx;
|
|
if (b) *b = m_matrix.yx;
|
|
if (c) *c = m_matrix.xy;
|
|
if (d) *d = m_matrix.yy;
|
|
if (tx) *tx= m_matrix.x0;
|
|
if (ty) *ty= m_matrix.y0;
|
|
}
|
|
|
|
// makes this the inverse matrix
|
|
void wxCairoMatrixData::Invert()
|
|
{
|
|
cairo_matrix_invert( &m_matrix );
|
|
}
|
|
|
|
// returns true if the elements of the transformation matrix are equal ?
|
|
bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
|
|
{
|
|
const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
|
|
return (
|
|
m_matrix.xx == tm->xx &&
|
|
m_matrix.yx == tm->yx &&
|
|
m_matrix.xy == tm->xy &&
|
|
m_matrix.yy == tm->yy &&
|
|
m_matrix.x0 == tm->x0 &&
|
|
m_matrix.y0 == tm->y0 ) ;
|
|
}
|
|
|
|
// return true if this is the identity matrix
|
|
bool wxCairoMatrixData::IsIdentity() const
|
|
{
|
|
return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
|
|
m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
|
|
}
|
|
|
|
//
|
|
// transformation
|
|
//
|
|
|
|
// add the translation to this matrix
|
|
void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
|
|
{
|
|
cairo_matrix_translate( &m_matrix, dx, dy) ;
|
|
}
|
|
|
|
// add the scale to this matrix
|
|
void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
|
|
{
|
|
cairo_matrix_scale( &m_matrix, xScale, yScale) ;
|
|
}
|
|
|
|
// add the rotation to this matrix (radians)
|
|
void wxCairoMatrixData::Rotate( wxDouble angle )
|
|
{
|
|
cairo_matrix_rotate( &m_matrix, angle) ;
|
|
}
|
|
|
|
//
|
|
// apply the transforms
|
|
//
|
|
|
|
// applies that matrix to the point
|
|
void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
|
|
{
|
|
double lx = *x, ly = *y ;
|
|
cairo_matrix_transform_point( &m_matrix, &lx, &ly);
|
|
*x = lx;
|
|
*y = ly;
|
|
}
|
|
|
|
// applies the matrix except for translations
|
|
void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
|
|
{
|
|
double lx = *dx, ly = *dy ;
|
|
cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
|
|
*dx = lx;
|
|
*dy = ly;
|
|
}
|
|
|
|
// returns the native representation
|
|
void * wxCairoMatrixData::GetNativeMatrix() const
|
|
{
|
|
return const_cast<cairo_matrix_t*>(&m_matrix);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxCairoBitmap implementation
|
|
// ----------------------------------------------------------------------------
|
|
|
|
int wxCairoBitmapData::InitBuffer(int width, int height, cairo_format_t format)
|
|
{
|
|
wxUnusedVar(format); // Only really unused with Cairo < 1.6.
|
|
|
|
// Determine the stride: use cairo_format_stride_for_width() if available
|
|
// but fall back to 4*width for the earlier versions as this is what that
|
|
// function always returns, even in latest Cairo, anyhow.
|
|
int stride;
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 6, 0)
|
|
if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 6, 0) )
|
|
{
|
|
stride = cairo_format_stride_for_width(format, width);
|
|
|
|
// All our code would totally break if stride were not a multiple of 4
|
|
// so ensure this is the case.
|
|
if ( stride % 4 )
|
|
{
|
|
wxFAIL_MSG("Unexpected Cairo image surface stride.");
|
|
|
|
stride += 4 - stride % 4;
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
stride = 4*width;
|
|
|
|
m_width = width;
|
|
m_height = height;
|
|
m_buffer = new unsigned char[height*stride];
|
|
|
|
return stride;
|
|
}
|
|
|
|
void wxCairoBitmapData::InitSurface(cairo_format_t format, int stride)
|
|
{
|
|
m_surface = cairo_image_surface_create_for_data(
|
|
m_buffer, format, m_width, m_height, stride);
|
|
m_pattern = cairo_pattern_create_for_surface(m_surface);
|
|
}
|
|
|
|
wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
|
|
wxGraphicsBitmapData(renderer)
|
|
{
|
|
m_surface = bitmap;
|
|
m_pattern = cairo_pattern_create_for_surface(m_surface);
|
|
|
|
m_width = cairo_image_surface_get_width(m_surface);
|
|
m_height = cairo_image_surface_get_height(m_surface);
|
|
m_buffer = NULL;
|
|
}
|
|
|
|
wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp )
|
|
: wxGraphicsBitmapData(renderer)
|
|
{
|
|
m_surface = NULL;
|
|
m_pattern = NULL;
|
|
m_buffer = NULL;
|
|
wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
|
|
|
|
#ifdef wxHAS_RAW_BITMAP
|
|
// Create a surface object and copy the bitmap pixel data to it. if the
|
|
// image has alpha (or a mask represented as alpha) then we'll use a
|
|
// different format and iterator than if it doesn't...
|
|
const bool isSrcBpp32 = bmp.GetDepth() == 32;
|
|
|
|
#if defined(__WXMSW__) || defined(__WXOSX__)
|
|
// Under MSW and OSX we can have 32 bpp xRGB bitmaps (without alpha).
|
|
const bool hasAlpha = bmp.HasAlpha();
|
|
#endif
|
|
|
|
cairo_format_t bufferFormat =
|
|
// Under MSW and OSX we can have 32 bpp xRGB bitmaps (without alpha).
|
|
#if defined(__WXMSW__) || defined(__WXOSX__)
|
|
(isSrcBpp32 && hasAlpha) || bmp.GetMask() != NULL
|
|
#else
|
|
isSrcBpp32 || bmp.GetMask() != NULL
|
|
#endif
|
|
? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24;
|
|
|
|
int stride = InitBuffer(bmp.GetWidth(), bmp.GetHeight(), bufferFormat);
|
|
|
|
wxBitmap bmpSource = bmp; // we need a non-const instance
|
|
wxUint32* data = (wxUint32*)m_buffer;
|
|
|
|
if ( isSrcBpp32 )
|
|
{
|
|
{
|
|
// use the bitmap's alpha
|
|
wxAlphaPixelData pixData(bmpSource);
|
|
wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
|
|
|
|
wxAlphaPixelData::Iterator p(pixData);
|
|
for (int y=0; y < pixData.GetHeight(); y++)
|
|
{
|
|
wxAlphaPixelData::Iterator rowStart = p;
|
|
wxUint32* const rowStartDst = data;
|
|
for (int x=0; x < pixData.GetWidth(); x++)
|
|
{
|
|
// Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
|
|
// with alpha in the upper 8 bits, then red, then green, then
|
|
// blue. The 32-bit quantities are stored native-endian.
|
|
// Pre-multiplied alpha is used.
|
|
#if defined (__WXMSW__) || defined(__WXOSX__)
|
|
unsigned char alpha = hasAlpha ? p.Alpha() : wxALPHA_OPAQUE;
|
|
// MSW and OSX bitmap pixel bits are already premultiplied.
|
|
*data = (alpha << 24 | p.Red() << 16 | p.Green() << 8 | p.Blue());
|
|
#else // !__WXMSW__ , !__WXOSX__
|
|
// We always have alpha, but we need to premultiply it.
|
|
unsigned char alpha = p.Alpha();
|
|
if (alpha == wxALPHA_TRANSPARENT)
|
|
*data = 0;
|
|
else
|
|
*data = (alpha << 24
|
|
| Premultiply(alpha, p.Red()) << 16
|
|
| Premultiply(alpha, p.Green()) << 8
|
|
| Premultiply(alpha, p.Blue()));
|
|
#endif // __WXMSW__, __WXOSX__ / !__WXMSW__, !__WXOSX__
|
|
++data;
|
|
++p;
|
|
}
|
|
|
|
data = rowStartDst + stride / 4;
|
|
p = rowStart;
|
|
p.OffsetY(pixData, 1);
|
|
}
|
|
}
|
|
|
|
#if defined(__WXMSW__) || defined(__WXOSX__)
|
|
// Using wxAlphaPixelData sets (on wxMSW and wxOSX) the internal
|
|
// "has alpha" flag but we want to leave it unchanged, so we need
|
|
// to reset "has alpha" flag back.
|
|
// (wxBitmap::UseAlpha() is used only on wxMSW and wxOSX.)
|
|
bmpSource.UseAlpha(hasAlpha);
|
|
#endif // __WXMSW__ || __WXOSX__
|
|
}
|
|
else // no alpha
|
|
{
|
|
wxNativePixelData pixData(bmpSource);
|
|
wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
|
|
|
|
wxNativePixelData::Iterator p(pixData);
|
|
for (int y=0; y < pixData.GetHeight(); y++)
|
|
{
|
|
wxNativePixelData::Iterator rowStart = p;
|
|
wxUint32* const rowStartDst = data;
|
|
for (int x=0; x < pixData.GetWidth(); x++)
|
|
{
|
|
// Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
|
|
// the upper 8 bits unused. Red, Green, and Blue are stored in
|
|
// the remaining 24 bits in that order. The 32-bit quantities
|
|
// are stored native-endian.
|
|
*data = (wxALPHA_OPAQUE << 24 | p.Red() << 16 | p.Green() << 8 | p.Blue() );
|
|
++data;
|
|
++p;
|
|
}
|
|
|
|
data = rowStartDst + stride / 4;
|
|
p = rowStart;
|
|
p.OffsetY(pixData, 1);
|
|
}
|
|
}
|
|
|
|
// if there is a mask, set the alpha bytes in the target buffer to
|
|
// fully transparent or retain original value
|
|
if (bmp.GetMask() != NULL)
|
|
{
|
|
wxBitmap bmpMask = bmp.GetMask()->GetBitmap();
|
|
data = (wxUint32*)m_buffer;
|
|
wxNativePixelData pixData(bmpMask);
|
|
wxCHECK_RET( pixData, wxT("Failed to gain raw access to mask data."));
|
|
|
|
wxNativePixelData::Iterator p(pixData);
|
|
for (int y=0; y < pixData.GetHeight(); y++)
|
|
{
|
|
wxNativePixelData::Iterator rowStart = p;
|
|
wxUint32* const rowStartDst = data;
|
|
for (int x=0; x < pixData.GetWidth(); x++)
|
|
{
|
|
if (p.Red()+p.Green()+p.Blue() == 0)
|
|
*data = 0;
|
|
|
|
++data;
|
|
++p;
|
|
}
|
|
|
|
data = rowStartDst + stride / 4;
|
|
p = rowStart;
|
|
p.OffsetY(pixData, 1);
|
|
}
|
|
}
|
|
|
|
InitSurface(bufferFormat, stride);
|
|
#endif // wxHAS_RAW_BITMAP
|
|
}
|
|
|
|
#if wxUSE_IMAGE
|
|
|
|
wxCairoBitmapData::wxCairoBitmapData(wxGraphicsRenderer* renderer,
|
|
const wxImage& image)
|
|
: wxGraphicsBitmapData(renderer)
|
|
{
|
|
const cairo_format_t bufferFormat = image.HasAlpha()
|
|
? CAIRO_FORMAT_ARGB32
|
|
: CAIRO_FORMAT_RGB24;
|
|
|
|
int stride = InitBuffer(image.GetWidth(), image.GetHeight(), bufferFormat);
|
|
|
|
// Copy wxImage data into the buffer. Notice that we work with wxUint32
|
|
// values and not bytes becase Cairo always works with buffers in native
|
|
// endianness.
|
|
wxUint32* dst = reinterpret_cast<wxUint32*>(m_buffer);
|
|
const unsigned char* src = image.GetData();
|
|
|
|
if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
|
|
{
|
|
const unsigned char* alpha = image.GetAlpha();
|
|
|
|
for ( int y = 0; y < m_height; y++ )
|
|
{
|
|
wxUint32* const rowStartDst = dst;
|
|
|
|
for ( int x = 0; x < m_width; x++ )
|
|
{
|
|
const unsigned char a = *alpha++;
|
|
|
|
*dst++ = a << 24 |
|
|
Premultiply(a, src[0]) << 16 |
|
|
Premultiply(a, src[1]) << 8 |
|
|
Premultiply(a, src[2]);
|
|
src += 3;
|
|
}
|
|
|
|
dst = rowStartDst + stride / 4;
|
|
}
|
|
}
|
|
else // RGB
|
|
{
|
|
for ( int y = 0; y < m_height; y++ )
|
|
{
|
|
wxUint32* const rowStartDst = dst;
|
|
|
|
for ( int x = 0; x < m_width; x++ )
|
|
{
|
|
*dst++ = src[0] << 16 |
|
|
src[1] << 8 |
|
|
src[2];
|
|
src += 3;
|
|
}
|
|
|
|
dst = rowStartDst + stride / 4;
|
|
}
|
|
}
|
|
|
|
InitSurface(bufferFormat, stride);
|
|
}
|
|
|
|
wxImage wxCairoBitmapData::ConvertToImage() const
|
|
{
|
|
wxImage image(m_width, m_height, false /* don't clear */);
|
|
|
|
// Get the surface type and format.
|
|
wxCHECK_MSG( cairo_surface_get_type(m_surface) == CAIRO_SURFACE_TYPE_IMAGE,
|
|
wxNullImage,
|
|
wxS("Can't convert non-image surface to image.") );
|
|
|
|
switch ( cairo_image_surface_get_format(m_surface) )
|
|
{
|
|
case CAIRO_FORMAT_ARGB32:
|
|
image.SetAlpha();
|
|
break;
|
|
|
|
case CAIRO_FORMAT_RGB24:
|
|
// Nothing to do, we don't use alpha by default.
|
|
break;
|
|
|
|
case CAIRO_FORMAT_A8:
|
|
case CAIRO_FORMAT_A1:
|
|
wxFAIL_MSG(wxS("Unsupported Cairo image surface type."));
|
|
return wxNullImage;
|
|
|
|
default:
|
|
wxFAIL_MSG(wxS("Unknown Cairo image surface type."));
|
|
return wxNullImage;
|
|
}
|
|
|
|
// Prepare for copying data.
|
|
cairo_surface_flush(m_surface);
|
|
const wxUint32* src = (wxUint32*)cairo_image_surface_get_data(m_surface);
|
|
wxCHECK_MSG( src, wxNullImage, wxS("Failed to get Cairo surface data.") );
|
|
|
|
int stride = cairo_image_surface_get_stride(m_surface);
|
|
wxCHECK_MSG( stride > 0, wxNullImage,
|
|
wxS("Failed to get Cairo surface stride.") );
|
|
|
|
// As we work with wxUint32 pointers and not char ones, we need to adjust
|
|
// the stride accordingly. This should be lossless as the stride must be a
|
|
// multiple of pixel size.
|
|
wxASSERT_MSG( !(stride % sizeof(wxUint32)), wxS("Unexpected stride.") );
|
|
stride /= sizeof(wxUint32);
|
|
|
|
unsigned char* dst = image.GetData();
|
|
unsigned char *alpha = image.GetAlpha();
|
|
if ( alpha )
|
|
{
|
|
// We need to also copy alpha and undo the pre-multiplication as Cairo
|
|
// stores pre-multiplied values in this format while wxImage does not.
|
|
for ( int y = 0; y < m_height; y++ )
|
|
{
|
|
const wxUint32* const rowStart = src;
|
|
for ( int x = 0; x < m_width; x++ )
|
|
{
|
|
const wxUint32 argb = *src++;
|
|
|
|
const unsigned char a = argb >> 24;
|
|
*alpha++ = a;
|
|
|
|
// Copy the RGB data undoing the pre-multiplication.
|
|
*dst++ = Unpremultiply(a, argb >> 16);
|
|
*dst++ = Unpremultiply(a, argb >> 8);
|
|
*dst++ = Unpremultiply(a, argb);
|
|
}
|
|
|
|
src = rowStart + stride;
|
|
}
|
|
}
|
|
else // RGB
|
|
{
|
|
// Things are pretty simple in this case, just copy RGB bytes.
|
|
for ( int y = 0; y < m_height; y++ )
|
|
{
|
|
const wxUint32* const rowStart = src;
|
|
for ( int x = 0; x < m_width; x++ )
|
|
{
|
|
const wxUint32 argb = *src++;
|
|
|
|
*dst++ = (argb & 0x00ff0000) >> 16;
|
|
*dst++ = (argb & 0x0000ff00) >> 8;
|
|
*dst++ = (argb & 0x000000ff);
|
|
}
|
|
|
|
src = rowStart + stride;
|
|
}
|
|
}
|
|
|
|
return image;
|
|
}
|
|
|
|
#endif // wxUSE_IMAGE
|
|
|
|
wxCairoBitmapData::~wxCairoBitmapData()
|
|
{
|
|
if (m_pattern)
|
|
cairo_pattern_destroy(m_pattern);
|
|
|
|
if (m_surface)
|
|
cairo_surface_destroy(m_surface);
|
|
|
|
delete [] m_buffer;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// wxCairoContext implementation
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class wxCairoOffsetHelper
|
|
{
|
|
public :
|
|
wxCairoOffsetHelper( cairo_t* ctx , bool offset )
|
|
{
|
|
m_ctx = ctx;
|
|
m_offset = offset;
|
|
if ( m_offset )
|
|
cairo_translate( m_ctx, 0.5, 0.5 );
|
|
}
|
|
~wxCairoOffsetHelper( )
|
|
{
|
|
if ( m_offset )
|
|
cairo_translate( m_ctx, -0.5, -0.5 );
|
|
}
|
|
public :
|
|
cairo_t* m_ctx;
|
|
bool m_offset;
|
|
} ;
|
|
|
|
#if wxUSE_PRINTING_ARCHITECTURE
|
|
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
|
|
: wxGraphicsContext(renderer)
|
|
{
|
|
#ifdef __WXMSW__
|
|
// wxMSW contexts always use MM_ANISOTROPIC, which messes up
|
|
// text rendering when printing using Cairo. Switch it to MM_TEXT
|
|
// map mode to avoid this problem.
|
|
HDC hdc = (HDC)dc.GetHDC();
|
|
m_mswStateSavedDC = ::SaveDC(hdc);
|
|
::SetMapMode(hdc, MM_TEXT);
|
|
m_mswSurface = cairo_win32_printing_surface_create(hdc);
|
|
Init( cairo_create(m_mswSurface) );
|
|
|
|
wxSize sz = dc.GetSize();
|
|
m_width = sz.x;
|
|
m_height = sz.y;
|
|
// Transfer transformation settings from source DC to Cairo context on our own.
|
|
// Since we switched from MM_ANISOTROPIC to MM_TEXT mapping mode
|
|
// we have to apply rescaled DC's device origin to Cairo context.
|
|
ApplyTransformFromDC(dc, Apply_scaled_dev_origin);
|
|
#elif defined(__WXGTK20__)
|
|
const wxDCImpl *impl = dc.GetImpl();
|
|
cairo_t* cr = static_cast<cairo_t*>(impl->GetCairoContext());
|
|
Init(cr ? cairo_reference(cr) : NULL);
|
|
|
|
wxSize sz = dc.GetSize();
|
|
m_width = sz.x;
|
|
m_height = sz.y;
|
|
|
|
// Transfer transformation settings from source DC to Cairo context.
|
|
ApplyTransformFromDC(dc);
|
|
#else
|
|
#warning "Constructing wxCairoContext from wxPrinterDC not implemented."
|
|
wxUnusedVar(dc);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
|
|
: wxGraphicsContext(renderer, dc.GetWindow())
|
|
{
|
|
int width, height;
|
|
dc.GetSize( &width, &height );
|
|
m_width = width;
|
|
m_height = height;
|
|
|
|
m_enableOffset = dc.GetContentScaleFactor() <= 1;
|
|
|
|
#ifdef __WXMSW__
|
|
HDC hdc = (HDC)dc.GetHDC();
|
|
m_mswStateSavedDC = ::SaveDC(hdc);
|
|
m_mswSurface = cairo_win32_surface_create(hdc);
|
|
Init( cairo_create(m_mswSurface) );
|
|
#endif
|
|
|
|
#ifdef __WXGTK3__
|
|
cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
|
|
Init(cr ? cairo_reference(cr) : NULL);
|
|
#elif defined __WXGTK20__
|
|
const wxGTKDCImpl* impldc = static_cast<const wxGTKDCImpl*>(dc.GetImpl());
|
|
Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
|
|
|
|
// Transfer transformation settings from source DC to Cairo context on our own.
|
|
ApplyTransformFromDC(dc);
|
|
#endif // __WXGTK3__ || __WXGTK20__
|
|
|
|
#ifdef __WXX11__
|
|
cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
|
|
if ( cr )
|
|
Init(cairo_reference(cr));
|
|
#elif defined(__WXMAC__)
|
|
CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
|
|
cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
|
|
Init( cairo_create( surface ) );
|
|
cairo_surface_destroy( surface );
|
|
#endif
|
|
|
|
#ifdef __WXQT__
|
|
m_qtPainter = static_cast<QPainter*>(dc.GetHandle());
|
|
// create a internal buffer (fallback if cairo_qt_surface is missing)
|
|
m_qtImage = new QImage(width, height, QImage::Format_ARGB32_Premultiplied);
|
|
// clear the buffer to be painted over the current contents
|
|
m_qtImage->fill(Qt::transparent);
|
|
m_qtSurface = cairo_image_surface_create_for_data(m_qtImage->bits(),
|
|
CAIRO_FORMAT_ARGB32,
|
|
width, height,
|
|
m_qtImage->bytesPerLine());
|
|
Init( cairo_create( m_qtSurface ) );
|
|
#endif
|
|
}
|
|
|
|
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
|
|
: wxGraphicsContext(renderer)
|
|
{
|
|
int width, height;
|
|
dc.GetSize( &width, &height );
|
|
m_width = width;
|
|
m_height = height;
|
|
|
|
m_enableOffset = dc.GetContentScaleFactor() <= 1;
|
|
|
|
#ifdef __WXMSW__
|
|
wxBitmap bmp = dc.GetSelectedBitmap();
|
|
wxASSERT_MSG(bmp.IsOk(),
|
|
wxS("Should select a bitmap before creating wxCairoContext"));
|
|
|
|
HDC hdc = (HDC)dc.GetHDC();
|
|
m_mswStateSavedDC = ::SaveDC(hdc);
|
|
bool hasBitmap = false; // To signal that Cairo context is created
|
|
// from raw bitmap and not from DC.
|
|
bool adjustTransformFromDC = false; // To signal that we have to transfer
|
|
// transformation settings from source
|
|
// wxDC to Cairo context on our own.
|
|
|
|
// Prior to 1.15.4 creating surface from HDC could be done only with
|
|
// cairo_win32_surface_create() supporting only 24 bpp RGB surface.
|
|
// So, in case of a 32 bpp ARGB bitmap, it was necessary to create
|
|
// a 32 bpp surface directly from bitmap data with cairo_image_surface_create_for_data().
|
|
// New API cairo_win32_surface_create_with_format() introduced in 1.15.4
|
|
// supports creating also 32 bpp ARGB surface so this function
|
|
// can be used to create a surface from both RGB and ARGB bitmaps.
|
|
// For 0RGB bitmaps, surface still has to be created in the old way, from
|
|
// bitmap data.
|
|
if ( bmp.GetDepth() == 32 &&
|
|
(cairo_version() < CAIRO_VERSION_ENCODE(1, 15, 4) || !bmp.HasAlpha()) )
|
|
{
|
|
#if wxUSE_WXDIB
|
|
// We need to convert the currently selected bitmap to a DIB
|
|
// because:
|
|
// 1. We need to correct alpha values if bitmap
|
|
// doesn't contain real ARGB data.
|
|
// 2. We need to pass location of its bit values to Cairo function.
|
|
|
|
// We need to temporarily deselect this bitmap
|
|
// from the memory DC before modifying it.
|
|
const_cast<wxMemoryDC&>(dc).SelectObject(wxNullBitmap);
|
|
|
|
bmp.ConvertToDIB(); // Does nothing if already a DIB.
|
|
|
|
if ( !bmp.HasAlpha() )
|
|
{
|
|
// Initialize alpha channel, even if we don't have any alpha yet,
|
|
// we should have correct (opaque) alpha values in it for Cairo
|
|
// functions to work correctly.
|
|
{
|
|
wxAlphaPixelData data(bmp);
|
|
if (data)
|
|
{
|
|
wxAlphaPixelData::Iterator p(data);
|
|
for (int y = 0; y < data.GetHeight(); y++)
|
|
{
|
|
wxAlphaPixelData::Iterator rowStart = p;
|
|
|
|
for (int x = 0; x < data.GetWidth(); x++)
|
|
{
|
|
p.Alpha() = wxALPHA_OPAQUE;
|
|
++p;
|
|
}
|
|
|
|
p = rowStart;
|
|
p.OffsetY(data, 1);
|
|
}
|
|
}
|
|
} // End of block modifying the bitmap.
|
|
|
|
// Using wxAlphaPixelData sets the internal "has alpha" flag but we
|
|
// don't really have any alpha yet, so reset it back for now.
|
|
bmp.ResetAlpha();
|
|
}
|
|
|
|
// Undo SelectObject() at the beginning of this block.
|
|
const_cast<wxMemoryDC&>(dc).SelectObjectAsSource(bmp);
|
|
#endif // wxUSE_WXDIB
|
|
|
|
// We need to pass a pointer to the location
|
|
// of the bit values to Cairo function.
|
|
BITMAP info;
|
|
if ( ::GetObject(bmp.GetHBITMAP(), sizeof(info), &info) == sizeof(info) )
|
|
{
|
|
if( info.bmBits )
|
|
{
|
|
m_mswSurface = cairo_image_surface_create_for_data((unsigned char*)info.bmBits,
|
|
bmp.HasAlpha() ?
|
|
CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24,
|
|
info.bmWidth,
|
|
info.bmHeight,
|
|
info.bmWidthBytes);
|
|
if ( cairo_surface_status(m_mswSurface) == CAIRO_STATUS_SUCCESS )
|
|
{
|
|
hasBitmap = true;
|
|
// We will have to transfer transformation settings
|
|
// from source wxDC to Cairo context on our own
|
|
// because in this case they are not inherited
|
|
// implicitly from underlying DC.
|
|
adjustTransformFromDC = true;
|
|
}
|
|
else
|
|
{
|
|
cairo_surface_destroy(m_mswSurface);
|
|
m_mswSurface = NULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
wxFAIL_MSG( wxS("Invalid bitmap") );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
wxLogLastError( wxS("wxCairoContext ctor - GetObject") );
|
|
}
|
|
}
|
|
|
|
// Fallback if Cairo surface hasn't been created from bitmap data.
|
|
if( !hasBitmap )
|
|
{
|
|
// When x- or y-coordinate of DC origin > 0 then surface
|
|
// created from DC is not fully operational (for some Cairo
|
|
// operations memory access violation errors occur - see Cairo
|
|
// bug 96482) so in this case we would need to pass non-transformed
|
|
// DC to Cairo and to apply original DC transformation to the Cairo
|
|
// context operations on our own.
|
|
// Bug 96482 was fixed in Cairo 1.15.12 so this workaround needs
|
|
// to be applied only for older Cairo versions.
|
|
if ( cairo_version() < CAIRO_VERSION_ENCODE(1, 15, 12) )
|
|
{
|
|
wxCoord orgX, orgY;
|
|
dc.GetDeviceOrigin(&orgX, &orgY);
|
|
if ( orgX > 0 || orgY > 0 )
|
|
{
|
|
::SetViewportOrgEx(hdc, 0, 0, NULL);
|
|
::SetViewportExtEx(hdc, 1, 1, NULL);
|
|
::SetWindowOrgEx(hdc, 0, 0, NULL);
|
|
::SetWindowExtEx(hdc, 1, 1, NULL);
|
|
adjustTransformFromDC = true;
|
|
}
|
|
}
|
|
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 15, 4)
|
|
if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 15, 4) )
|
|
{
|
|
m_mswSurface = cairo_win32_surface_create_with_format(hdc,
|
|
bmp.HasAlpha() ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24);
|
|
}
|
|
else
|
|
#endif // Cairo >= 1.15.4
|
|
{
|
|
m_mswSurface = cairo_win32_surface_create(hdc);
|
|
}
|
|
wxASSERT_MSG( cairo_surface_status(m_mswSurface) == CAIRO_STATUS_SUCCESS,
|
|
wxS("wxCairoContext ctor - Error creating Cairo surface") );
|
|
}
|
|
|
|
Init( cairo_create(m_mswSurface) );
|
|
if (hasBitmap)
|
|
{
|
|
// If we've created an image surface we need to flip the Y axis
|
|
// so that all drawing will appear right side up.
|
|
// We have to remember these operations as an internal transformation
|
|
// which is not going to be exposed through e.g. GetTransform().
|
|
cairo_matrix_init(&m_internalTransform, 1.0, 0.0, 0.0, -1.0, 0.0, height);
|
|
}
|
|
// Transfer transformation settings from source wxDC
|
|
// to Cairo context on our own, if required.
|
|
if ( adjustTransformFromDC )
|
|
ApplyTransformFromDC(dc);
|
|
#endif // __WXMSW__
|
|
|
|
#ifdef __WXGTK3__
|
|
cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
|
|
Init(cr ? cairo_reference(cr) : NULL);
|
|
#elif defined __WXGTK20__
|
|
const wxGTKDCImpl* impldc = static_cast<const wxGTKDCImpl*>(dc.GetImpl());
|
|
Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
|
|
|
|
// Transfer transformation settings from source DC to Cairo context on our own.
|
|
ApplyTransformFromDC(dc);
|
|
#endif // __WXGTK3__ || __WXGTK20__
|
|
|
|
#ifdef __WXX11__
|
|
cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
|
|
if ( cr )
|
|
Init(cairo_reference(cr));
|
|
#endif
|
|
|
|
#ifdef __WXMAC__
|
|
CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
|
|
cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
|
|
Init( cairo_create( surface ) );
|
|
cairo_surface_destroy( surface );
|
|
#endif
|
|
|
|
#ifdef __WXQT__
|
|
m_qtPainter = static_cast<QPainter*>(dc.GetHandle());
|
|
// create a internal buffer (fallback if cairo_qt_surface is missing)
|
|
m_qtImage = new QImage(width, height, QImage::Format_ARGB32_Premultiplied);
|
|
// clear the buffer to be painted over the current contents
|
|
m_qtImage->fill(Qt::transparent);
|
|
m_qtSurface = cairo_image_surface_create_for_data(m_qtImage->bits(),
|
|
CAIRO_FORMAT_ARGB32,
|
|
width, height,
|
|
m_qtImage->bytesPerLine());
|
|
Init( cairo_create( m_qtSurface ) );
|
|
#endif
|
|
}
|
|
|
|
#ifdef __WXGTK20__
|
|
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window )
|
|
: wxGraphicsContext(renderer)
|
|
{
|
|
Init( gdk_cairo_create( window ) );
|
|
|
|
#ifdef __WXGTK3__
|
|
m_width = gdk_window_get_width(window);
|
|
m_height = gdk_window_get_height(window);
|
|
#else
|
|
int width, height;
|
|
gdk_drawable_get_size(window, &width, &height);
|
|
m_width = width;
|
|
m_height = height;
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#ifdef __WXMSW__
|
|
|
|
#if wxUSE_ENH_METAFILE
|
|
wxCairoContext::wxCairoContext(wxGraphicsRenderer* renderer, const wxEnhMetaFileDC& dc)
|
|
: wxGraphicsContext(renderer)
|
|
{
|
|
// wxMSW contexts always use MM_ANISOTROPIC, which messes up
|
|
// text rendering when printing using Cairo. Switch it to MM_TEXT
|
|
// map mode to avoid this problem.
|
|
HDC hdc = (HDC)dc.GetHDC();
|
|
m_mswStateSavedDC = ::SaveDC(hdc);
|
|
::SetMapMode(hdc, MM_TEXT);
|
|
m_mswSurface = cairo_win32_printing_surface_create(hdc);
|
|
Init( cairo_create(m_mswSurface) );
|
|
|
|
wxSize sz = dc.GetSize();
|
|
m_width = sz.x;
|
|
m_height = sz.y;
|
|
// Transfer transformation settings from source DC to Cairo context on our own.
|
|
// Since we switched from MM_ANISOTROPIC to MM_TEXT mapping mode
|
|
// we have to apply rescaled DC's device origin to Cairo context.
|
|
ApplyTransformFromDC(dc, Apply_scaled_dev_origin);
|
|
}
|
|
#endif // wxUSE_ENH_METAFILE
|
|
|
|
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
|
|
: wxGraphicsContext(renderer)
|
|
{
|
|
m_mswStateSavedDC = ::SaveDC(handle);
|
|
|
|
bool adjustTransformFromDC = false; // To signal that we have to transfer
|
|
// transformation settings from source
|
|
// wxDC to Cairo context on our own.
|
|
cairo_matrix_t dcTransform;
|
|
cairo_matrix_init_identity(&dcTransform);
|
|
// When x- or y-coordinate of DC origin > 0 then surface
|
|
// created from DC is not fully operational (for some Cairo
|
|
// operations memory access violation errors occur - see Cairo
|
|
// bug 96482) so in this case we would need to pass non-transformed
|
|
// DC to Cairo and to apply original DC transformation to the Cairo
|
|
// context operations on our own.
|
|
if ( cairo_version() < CAIRO_VERSION_ENCODE(1, 15, 12) )
|
|
{
|
|
POINT devOrg;
|
|
::GetViewportOrgEx(handle, &devOrg);
|
|
if ( devOrg.x > 0 || devOrg.y > 0 )
|
|
{
|
|
SIZE devExt;
|
|
::GetViewportExtEx(handle, &devExt);
|
|
POINT logOrg;
|
|
::GetWindowOrgEx(handle, &logOrg);
|
|
SIZE logExt;
|
|
::GetWindowExtEx(handle, &logExt);
|
|
|
|
double sx = (double)devExt.cx / logExt.cx;
|
|
double sy = (double)devExt.cy / logExt.cy;
|
|
|
|
cairo_matrix_translate(&dcTransform, devOrg.x, devOrg.y);
|
|
cairo_matrix_scale(&dcTransform, sx, sy);
|
|
cairo_matrix_translate(&dcTransform, -logOrg.x, -logOrg.y);
|
|
|
|
::SetViewportOrgEx(handle, 0, 0, NULL);
|
|
::SetViewportExtEx(handle, 1, 1, NULL);
|
|
::SetWindowOrgEx(handle, 0, 0, NULL);
|
|
::SetWindowExtEx(handle, 1, 1, NULL);
|
|
|
|
adjustTransformFromDC = true;
|
|
}
|
|
}
|
|
m_mswSurface = cairo_win32_surface_create(handle);
|
|
Init( cairo_create(m_mswSurface) );
|
|
if ( adjustTransformFromDC )
|
|
{
|
|
cairo_matrix_multiply(&m_internalTransform,
|
|
&dcTransform, &m_internalTransform);
|
|
cairo_set_matrix(m_context, &m_internalTransform);
|
|
}
|
|
|
|
m_width = 0;
|
|
m_height = 0;
|
|
// Try to determine DC size.
|
|
if ( m_context )
|
|
{
|
|
RECT r;
|
|
if( ::GetClipBox(handle, &r) != ERROR )
|
|
{
|
|
m_width = r.right - r.left;
|
|
m_height = r.bottom - r.top;
|
|
}
|
|
}
|
|
}
|
|
|
|
wxCairoContext::wxCairoContext(wxGraphicsRenderer* renderer, HWND hWnd)
|
|
: wxGraphicsContext(renderer)
|
|
, m_mswWindowHDC(hWnd)
|
|
{
|
|
// See remarks for wxWindowBase::GetContentScaleFactor
|
|
double scaleY = ::GetDeviceCaps((HDC)m_mswWindowHDC, LOGPIXELSY) / 96.0f;
|
|
m_enableOffset = scaleY <= 1.0;
|
|
|
|
m_mswStateSavedDC = 0;
|
|
m_mswSurface = cairo_win32_surface_create((HDC)m_mswWindowHDC);
|
|
|
|
Init(cairo_create(m_mswSurface));
|
|
m_width = 0;
|
|
m_height = 0;
|
|
if ( m_context )
|
|
{
|
|
RECT r = wxGetWindowRect(hWnd);
|
|
m_width = r.right - r.left;
|
|
m_height = r.bottom - r.top;
|
|
}
|
|
}
|
|
#endif // __WXMSW__
|
|
|
|
|
|
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
|
|
: wxGraphicsContext(renderer)
|
|
{
|
|
#ifdef __WXQT__
|
|
m_qtPainter = NULL;
|
|
m_qtImage = NULL;
|
|
m_qtSurface = NULL;
|
|
#endif
|
|
#ifdef __WXMSW__
|
|
m_mswSurface = NULL;
|
|
m_mswStateSavedDC = 0;
|
|
#endif // __WXMSW__
|
|
Init( cairo_reference(context) );
|
|
m_width = 0;
|
|
m_height = 0;
|
|
}
|
|
|
|
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
|
|
: wxGraphicsContext(renderer, window)
|
|
#ifdef __WXMSW__
|
|
, m_mswWindowHDC(GetHwndOf(window))
|
|
#endif
|
|
{
|
|
m_enableOffset = window->GetContentScaleFactor() <= 1;
|
|
#ifdef __WXGTK__
|
|
// something along these lines (copied from dcclient)
|
|
|
|
// Some controls don't have m_wxwindow - like wxStaticBox, but the user
|
|
// code should still be able to create wxClientDCs for them, so we will
|
|
// use the parent window here then.
|
|
if (window->m_wxwindow == NULL)
|
|
{
|
|
window = window->GetParent();
|
|
}
|
|
|
|
wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
|
|
|
|
Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
|
|
|
|
wxSize sz = window->GetSize();
|
|
m_width = sz.x;
|
|
m_height = sz.y;
|
|
#endif
|
|
|
|
#ifdef __WXMSW__
|
|
m_mswStateSavedDC = 0;
|
|
m_mswSurface = cairo_win32_surface_create((HDC)m_mswWindowHDC);
|
|
Init(cairo_create(m_mswSurface));
|
|
|
|
wxSize sz = window->GetSize();
|
|
m_width = sz.x;
|
|
m_height = sz.y;
|
|
#endif // __WXMSW__
|
|
|
|
#ifdef __WXQT__
|
|
// direct m_qtSurface is not being used yet (this needs cairo qt surface)
|
|
#endif
|
|
}
|
|
|
|
wxCairoContext::wxCairoContext(wxGraphicsRenderer* renderer) :
|
|
wxGraphicsContext(renderer)
|
|
{
|
|
#ifdef __WXQT__
|
|
m_qtPainter = NULL;
|
|
m_qtImage = NULL;
|
|
m_qtSurface = NULL;
|
|
#endif
|
|
#ifdef __WXMSW__
|
|
m_mswSurface = NULL;
|
|
m_mswStateSavedDC = 0;
|
|
#endif // __WXMSW__
|
|
Init(NULL);
|
|
m_width = 0;
|
|
m_height = 0;
|
|
}
|
|
|
|
wxCairoContext::~wxCairoContext()
|
|
{
|
|
if ( m_context )
|
|
{
|
|
PopState();
|
|
PopState();
|
|
cairo_destroy(m_context);
|
|
}
|
|
#ifdef __WXMSW__
|
|
if ( m_mswSurface )
|
|
{
|
|
HDC hdc = cairo_win32_surface_get_dc(m_mswSurface);
|
|
|
|
cairo_surface_destroy(m_mswSurface);
|
|
|
|
if ( hdc && m_mswStateSavedDC != 0 )
|
|
::RestoreDC(hdc, m_mswStateSavedDC);
|
|
}
|
|
#endif
|
|
#ifdef __WXQT__
|
|
if ( m_qtPainter != NULL )
|
|
{
|
|
// draw the internal buffered image to the widget
|
|
cairo_surface_flush(m_qtSurface);
|
|
m_qtPainter->drawImage( 0,0, *m_qtImage );
|
|
delete m_qtImage;
|
|
cairo_surface_destroy( m_qtSurface );
|
|
}
|
|
#endif
|
|
|
|
}
|
|
|
|
void wxCairoContext::Init(cairo_t *context)
|
|
{
|
|
#ifdef __WXGTK3__
|
|
// Attempt to find the system font scaling parameter (e.g. "Fonts->Scaling
|
|
// Factor" in Gnome Tweaks, "Force font DPI" in KDE System Settings or
|
|
// GDK_DPI_SCALE environment variable).
|
|
GdkScreen* screen = gdk_screen_get_default();
|
|
m_fontScalingFactor = screen ? gdk_screen_get_resolution(screen) / 96.0 : 1.0;
|
|
#endif
|
|
|
|
m_context = context;
|
|
if ( m_context )
|
|
{
|
|
// Store initial transformation settings
|
|
// of the underlying source context.
|
|
cairo_get_matrix(m_context, &m_internalTransform);
|
|
|
|
PushState();
|
|
PushState();
|
|
}
|
|
else
|
|
{
|
|
cairo_matrix_init_identity(&m_internalTransform);
|
|
}
|
|
}
|
|
|
|
void wxCairoContext::ApplyTransformFromDC(const wxDC& dc, ApplyTransformMode mode)
|
|
{
|
|
// Transfer transformation settings from source wxDC
|
|
// to Cairo context and store them as an internal transformation
|
|
// (which is not going to be exposed).
|
|
double sx, sy;
|
|
dc.GetUserScale(&sx, &sy);
|
|
double lsx, lsy;
|
|
dc.GetLogicalScale(&lsx, &lsy);
|
|
sx *= lsx;
|
|
sy *= lsy;
|
|
|
|
wxPoint org = dc.GetDeviceOrigin();
|
|
if ( mode == Apply_scaled_dev_origin )
|
|
// This is used when mapping mode has been changed
|
|
// under wxMSW from MM_ANISOTROPIC to MM_TEXT.
|
|
cairo_matrix_translate(&m_internalTransform, org.x/sx, org.y/sy);
|
|
else
|
|
cairo_matrix_translate(&m_internalTransform, org.x, org.y);
|
|
|
|
cairo_matrix_scale(&m_internalTransform, sx, sy);
|
|
|
|
org = dc.GetLogicalOrigin();
|
|
cairo_matrix_translate(&m_internalTransform, -org.x, -org.y);
|
|
|
|
cairo_set_matrix(m_context, &m_internalTransform);
|
|
}
|
|
|
|
void wxCairoContext::Clip( const wxRegion& region )
|
|
{
|
|
// Create a path with all the rectangles in the region
|
|
wxGraphicsPath path = GetRenderer()->CreatePath();
|
|
wxRegionIterator ri(region);
|
|
while (ri)
|
|
{
|
|
path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
|
|
++ri;
|
|
}
|
|
|
|
// Put it in the context
|
|
cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
|
|
cairo_append_path(m_context, cp);
|
|
|
|
// clip to that path
|
|
cairo_clip(m_context);
|
|
path.UnGetNativePath(cp);
|
|
}
|
|
|
|
void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
|
|
{
|
|
// Create a path with this rectangle
|
|
wxGraphicsPath path = GetRenderer()->CreatePath();
|
|
path.AddRectangle(x,y,w,h);
|
|
|
|
// Put it in the context
|
|
cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
|
|
cairo_append_path(m_context, cp);
|
|
|
|
// clip to that path
|
|
cairo_clip(m_context);
|
|
path.UnGetNativePath(cp);
|
|
}
|
|
|
|
void wxCairoContext::ResetClip()
|
|
{
|
|
cairo_reset_clip(m_context);
|
|
}
|
|
|
|
void wxCairoContext::GetClipBox(wxDouble* x, wxDouble* y, wxDouble* w, wxDouble* h)
|
|
{
|
|
double x1, y1, x2, y2;
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 4, 0)
|
|
if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 4, 0) )
|
|
{
|
|
cairo_clip_extents(m_context, &x1, &y1, &x2, &y2);
|
|
// Check if we have an empty clipping box.
|
|
if ( x2 - x1 <= DBL_MIN || y2 - y1 <= DBL_MIN )
|
|
x1 = x2 = y1 = y2 = 0.0;
|
|
}
|
|
else
|
|
#endif // Cairo >= 1.4
|
|
{
|
|
// There doesn't seem to be any way to get the clipping box with this
|
|
// ancient version.
|
|
x1 = x2 = y1 = y2 = 0.0;
|
|
}
|
|
|
|
if ( x )
|
|
*x = x1;
|
|
if ( y )
|
|
*y = y1;
|
|
if ( w )
|
|
*w = x2 - x1;
|
|
if ( h )
|
|
*h = y2 - y1;
|
|
}
|
|
|
|
void wxCairoContext::StrokePath( const wxGraphicsPath& path )
|
|
{
|
|
if ( !m_pen.IsNull() )
|
|
{
|
|
wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
|
|
cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
|
|
cairo_append_path(m_context,cp);
|
|
((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
|
|
cairo_stroke(m_context);
|
|
path.UnGetNativePath(cp);
|
|
}
|
|
}
|
|
|
|
void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
|
|
{
|
|
if ( !m_brush.IsNull() )
|
|
{
|
|
wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
|
|
cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
|
|
cairo_append_path(m_context,cp);
|
|
((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
|
|
cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
|
|
cairo_fill(m_context);
|
|
path.UnGetNativePath(cp);
|
|
}
|
|
}
|
|
|
|
void wxCairoContext::ClearRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
|
|
{
|
|
cairo_save(m_context);
|
|
cairo_set_operator(m_context, CAIRO_OPERATOR_CLEAR);
|
|
cairo_rectangle (m_context, x, y, w, h);
|
|
cairo_fill (m_context);
|
|
cairo_restore(m_context);
|
|
}
|
|
|
|
void wxCairoContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
|
|
{
|
|
if ( !m_brush.IsNull() )
|
|
{
|
|
((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
|
|
cairo_rectangle(m_context, x, y, w, h);
|
|
cairo_fill(m_context);
|
|
}
|
|
if ( !m_pen.IsNull() )
|
|
{
|
|
wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
|
|
((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
|
|
cairo_rectangle(m_context, x, y, w, h);
|
|
cairo_stroke(m_context);
|
|
}
|
|
}
|
|
|
|
void wxCairoContext::Rotate( wxDouble angle )
|
|
{
|
|
cairo_rotate(m_context,angle);
|
|
}
|
|
|
|
void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
|
|
{
|
|
cairo_translate(m_context,dx,dy);
|
|
}
|
|
|
|
void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
|
|
{
|
|
cairo_scale(m_context,xScale,yScale);
|
|
}
|
|
|
|
// concatenates this transform with the current transform of this context
|
|
void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
|
|
{
|
|
cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
|
|
}
|
|
|
|
// sets the transform of this context
|
|
void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
|
|
{
|
|
// To get actual transformation we need to concatenate
|
|
// given transformation with internal transformation.
|
|
cairo_set_matrix(m_context, &m_internalTransform);
|
|
cairo_transform(m_context, (const cairo_matrix_t*)matrix.GetNativeMatrix());
|
|
}
|
|
|
|
// gets the matrix of this context
|
|
wxGraphicsMatrix wxCairoContext::GetTransform() const
|
|
{
|
|
wxGraphicsMatrix matrix = CreateMatrix();
|
|
cairo_matrix_t* transformMatrix = (cairo_matrix_t*)matrix.GetNativeMatrix();
|
|
cairo_get_matrix(m_context, transformMatrix);
|
|
|
|
// Don't expose internal transformations.
|
|
cairo_matrix_t intTransformMatrixRev = m_internalTransform;
|
|
if ( cairo_matrix_invert(&intTransformMatrixRev) == CAIRO_STATUS_SUCCESS )
|
|
cairo_matrix_multiply(transformMatrix, transformMatrix, &intTransformMatrixRev);
|
|
|
|
return matrix;
|
|
}
|
|
|
|
|
|
|
|
void wxCairoContext::PushState()
|
|
{
|
|
cairo_save(m_context);
|
|
}
|
|
|
|
void wxCairoContext::PopState()
|
|
{
|
|
cairo_restore(m_context);
|
|
}
|
|
|
|
void wxCairoContext::Flush()
|
|
{
|
|
#ifdef __WXMSW__
|
|
if ( m_mswSurface )
|
|
{
|
|
cairo_surface_flush(m_mswSurface);
|
|
}
|
|
#endif
|
|
#ifdef __WXQT__
|
|
if ( m_qtSurface )
|
|
{
|
|
cairo_surface_flush(m_qtSurface);
|
|
m_qtPainter->drawImage( 0,0, *m_qtImage );
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
|
|
{
|
|
wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
|
|
DrawBitmap(bitmap, x, y, w, h);
|
|
|
|
}
|
|
|
|
void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
|
|
{
|
|
PushState();
|
|
|
|
// In case we're scaling the image by using a width and height different
|
|
// than the bitmap's size create a pattern transformation on the surface and
|
|
// draw the transformed pattern.
|
|
wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
|
|
cairo_pattern_t* pattern = data->GetCairoPattern();
|
|
wxSize size = data->GetSize();
|
|
|
|
wxDouble scaleX = w / size.GetWidth();
|
|
wxDouble scaleY = h / size.GetHeight();
|
|
|
|
// prepare to draw the image
|
|
cairo_translate(m_context, x, y);
|
|
cairo_scale(m_context, scaleX, scaleY);
|
|
cairo_set_source(m_context, pattern);
|
|
// use the original size here since the context is scaled already...
|
|
cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
|
|
// fill the rectangle using the pattern
|
|
cairo_fill(m_context);
|
|
|
|
PopState();
|
|
}
|
|
|
|
void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
|
|
{
|
|
// An icon is a bitmap on wxGTK, so do this the easy way. When we want to
|
|
// start using the Cairo backend on other platforms then we may need to
|
|
// fiddle with this...
|
|
DrawBitmap(icon, x, y, w, h);
|
|
}
|
|
|
|
|
|
void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
|
|
{
|
|
wxCHECK_RET( !m_font.IsNull(),
|
|
wxT("wxCairoContext::DrawText - no valid font set") );
|
|
|
|
if ( str.empty())
|
|
return;
|
|
|
|
const wxCharBuffer data = str.utf8_str();
|
|
if ( !data )
|
|
return;
|
|
|
|
wxCairoFontData* const
|
|
fontData = static_cast<wxCairoFontData*>(m_font.GetRefData());
|
|
|
|
fontData->Apply(this);
|
|
|
|
#ifdef __WXGTK__
|
|
const wxFont& font = fontData->GetFont();
|
|
if ( font.IsOk() )
|
|
{
|
|
wxGtkObject<PangoLayout> layout(pango_cairo_create_layout (m_context));
|
|
ApplyFont(layout, font);
|
|
pango_layout_set_text(layout, data, data.length());
|
|
|
|
// Note that Pango attributes don't depend on font size, so we don't
|
|
// need to use the scaled font here.
|
|
font.GTKSetPangoAttrs(layout);
|
|
|
|
cairo_move_to(m_context, x, y);
|
|
pango_cairo_show_layout (m_context, layout);
|
|
|
|
// Don't use Cairo text API, we already did everything.
|
|
return;
|
|
}
|
|
#endif // __WXGTK__
|
|
|
|
// Cairo's x,y for drawing text is at the baseline, so we need to adjust
|
|
// the position we move to by the ascent.
|
|
cairo_font_extents_t fe;
|
|
cairo_font_extents(m_context, &fe);
|
|
cairo_move_to(m_context, x, y+fe.ascent);
|
|
|
|
cairo_show_text(m_context, data);
|
|
}
|
|
|
|
void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
|
|
wxDouble *descent, wxDouble *externalLeading ) const
|
|
{
|
|
wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
|
|
|
|
if ( width )
|
|
*width = 0;
|
|
if ( height )
|
|
*height = 0;
|
|
if ( descent )
|
|
*descent = 0;
|
|
if ( externalLeading )
|
|
*externalLeading = 0;
|
|
|
|
// We can skip computing the string width and height if it is empty, but
|
|
// not its descent and/or external leading, which still needs to be
|
|
// returned even for an empty string.
|
|
if ( str.empty() && !descent && !externalLeading )
|
|
return;
|
|
|
|
wxCairoFontData* const
|
|
fontData = static_cast<wxCairoFontData*>(m_font.GetRefData());
|
|
|
|
#ifdef __WXGTK__
|
|
// Use Pango instead of Cairo toy font API if we have the font.
|
|
const wxFont& font = fontData->GetFont();
|
|
if ( font.IsOk() )
|
|
{
|
|
// Note that there is no need to call Apply() at all in this case, it
|
|
// just sets the text colour, but we don't care about this when
|
|
// measuring its extent.
|
|
int w, h;
|
|
|
|
wxGtkObject<PangoLayout> layout(pango_cairo_create_layout (m_context));
|
|
ApplyFont(layout, font);
|
|
const wxCharBuffer data = str.utf8_str();
|
|
if ( !data )
|
|
{
|
|
return;
|
|
}
|
|
pango_layout_set_text(layout, data, data.length());
|
|
pango_layout_get_pixel_size (layout, &w, &h);
|
|
if ( width )
|
|
*width = w;
|
|
if ( height )
|
|
*height = h;
|
|
if (descent)
|
|
{
|
|
PangoLayoutIter *iter = pango_layout_get_iter(layout);
|
|
int baseline = pango_layout_iter_get_baseline(iter);
|
|
pango_layout_iter_free(iter);
|
|
*descent = h - PANGO_PIXELS(baseline);
|
|
}
|
|
return;
|
|
}
|
|
#endif // __WXGTK__
|
|
|
|
fontData->Apply(const_cast<wxCairoContext*>(this));
|
|
|
|
if (width)
|
|
{
|
|
const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
|
|
cairo_text_extents_t te;
|
|
cairo_text_extents(m_context, buf, &te);
|
|
*width = te.width;
|
|
}
|
|
|
|
if (height || descent || externalLeading)
|
|
{
|
|
cairo_font_extents_t fe;
|
|
cairo_font_extents(m_context, &fe);
|
|
|
|
// some backends have negative descents
|
|
|
|
if ( fe.descent < 0 )
|
|
fe.descent = -fe.descent;
|
|
|
|
if ( fe.height < (fe.ascent + fe.descent ) )
|
|
{
|
|
// some backends are broken re height ... (eg currently ATSUI)
|
|
fe.height = fe.ascent + fe.descent;
|
|
}
|
|
|
|
if (height)
|
|
*height = fe.height;
|
|
if ( descent )
|
|
*descent = fe.descent;
|
|
if ( externalLeading )
|
|
*externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
|
|
}
|
|
}
|
|
|
|
void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
|
|
{
|
|
widths.Empty();
|
|
wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
|
|
#ifdef __WXGTK__
|
|
const wxCharBuffer data = text.utf8_str();
|
|
int w = 0;
|
|
if (data.length())
|
|
{
|
|
wxGtkObject<PangoLayout> layout(pango_cairo_create_layout(m_context));
|
|
const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
|
|
|
|
ApplyFont(layout, font);
|
|
pango_layout_set_text(layout, data, data.length());
|
|
PangoLayoutIter* iter = pango_layout_get_iter(layout);
|
|
PangoRectangle rect;
|
|
do {
|
|
pango_layout_iter_get_cluster_extents(iter, NULL, &rect);
|
|
w += rect.width;
|
|
widths.Add(PANGO_PIXELS(w));
|
|
} while (pango_layout_iter_next_cluster(iter));
|
|
pango_layout_iter_free(iter);
|
|
}
|
|
size_t i = widths.GetCount();
|
|
const size_t len = text.length();
|
|
while (i++ < len)
|
|
widths.Add(PANGO_PIXELS(w));
|
|
#else
|
|
for (size_t i = 0; i < text.Length(); i++)
|
|
{
|
|
const wxCharBuffer data = text.SubString(0, i).utf8_str();
|
|
|
|
cairo_text_extents_t te;
|
|
cairo_text_extents(m_context, (const char*)data, &te);
|
|
|
|
widths.push_back(te.width);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void * wxCairoContext::GetNativeContext()
|
|
{
|
|
return m_context;
|
|
}
|
|
|
|
bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
|
|
{
|
|
if (m_antialias == antialias)
|
|
return true;
|
|
|
|
m_antialias = antialias;
|
|
|
|
cairo_antialias_t antialiasMode;
|
|
switch (antialias)
|
|
{
|
|
case wxANTIALIAS_DEFAULT:
|
|
antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
|
|
break;
|
|
case wxANTIALIAS_NONE:
|
|
antialiasMode = CAIRO_ANTIALIAS_NONE;
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
cairo_set_antialias(m_context, antialiasMode);
|
|
return true;
|
|
}
|
|
|
|
bool wxCairoContext::SetInterpolationQuality(wxInterpolationQuality WXUNUSED(interpolation))
|
|
{
|
|
// placeholder
|
|
return false;
|
|
}
|
|
|
|
bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
|
|
{
|
|
if ( m_composition == op )
|
|
return true;
|
|
|
|
m_composition = op;
|
|
cairo_operator_t cop;
|
|
switch (op)
|
|
{
|
|
case wxCOMPOSITION_CLEAR:
|
|
cop = CAIRO_OPERATOR_CLEAR;
|
|
break;
|
|
case wxCOMPOSITION_SOURCE:
|
|
cop = CAIRO_OPERATOR_SOURCE;
|
|
break;
|
|
case wxCOMPOSITION_OVER:
|
|
cop = CAIRO_OPERATOR_OVER;
|
|
break;
|
|
case wxCOMPOSITION_IN:
|
|
cop = CAIRO_OPERATOR_IN;
|
|
break;
|
|
case wxCOMPOSITION_OUT:
|
|
cop = CAIRO_OPERATOR_OUT;
|
|
break;
|
|
case wxCOMPOSITION_ATOP:
|
|
cop = CAIRO_OPERATOR_ATOP;
|
|
break;
|
|
case wxCOMPOSITION_DEST:
|
|
cop = CAIRO_OPERATOR_DEST;
|
|
break;
|
|
case wxCOMPOSITION_DEST_OVER:
|
|
cop = CAIRO_OPERATOR_DEST_OVER;
|
|
break;
|
|
case wxCOMPOSITION_DEST_IN:
|
|
cop = CAIRO_OPERATOR_DEST_IN;
|
|
break;
|
|
case wxCOMPOSITION_DEST_OUT:
|
|
cop = CAIRO_OPERATOR_DEST_OUT;
|
|
break;
|
|
case wxCOMPOSITION_DEST_ATOP:
|
|
cop = CAIRO_OPERATOR_DEST_ATOP;
|
|
break;
|
|
case wxCOMPOSITION_XOR:
|
|
cop = CAIRO_OPERATOR_XOR;
|
|
break;
|
|
case wxCOMPOSITION_ADD:
|
|
cop = CAIRO_OPERATOR_ADD;
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
cairo_set_operator(m_context, cop);
|
|
return true;
|
|
}
|
|
|
|
void wxCairoContext::BeginLayer(wxDouble opacity)
|
|
{
|
|
m_layerOpacities.push_back(opacity);
|
|
cairo_push_group(m_context);
|
|
}
|
|
|
|
void wxCairoContext::EndLayer()
|
|
{
|
|
float opacity = m_layerOpacities.back();
|
|
m_layerOpacities.pop_back();
|
|
cairo_pop_group_to_source(m_context);
|
|
cairo_paint_with_alpha(m_context,opacity);
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// wxCairoRenderer declaration
|
|
//-----------------------------------------------------------------------------
|
|
|
|
class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
|
|
{
|
|
public :
|
|
wxCairoRenderer() {}
|
|
|
|
virtual ~wxCairoRenderer() {}
|
|
|
|
// Context
|
|
|
|
virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc) wxOVERRIDE;
|
|
virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc) wxOVERRIDE;
|
|
#if wxUSE_PRINTING_ARCHITECTURE
|
|
virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc) wxOVERRIDE;
|
|
#endif
|
|
|
|
virtual wxGraphicsContext * CreateContextFromNativeContext( void * context ) wxOVERRIDE;
|
|
|
|
virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window ) wxOVERRIDE;
|
|
|
|
#ifdef __WXMSW__
|
|
virtual wxGraphicsContext * CreateContextFromNativeHDC(WXHDC dc) wxOVERRIDE;
|
|
#endif
|
|
|
|
#if wxUSE_IMAGE
|
|
virtual wxGraphicsContext * CreateContextFromImage(wxImage& image) wxOVERRIDE;
|
|
#endif // wxUSE_IMAGE
|
|
|
|
virtual wxGraphicsContext * CreateContext( wxWindow* window ) wxOVERRIDE;
|
|
|
|
virtual wxGraphicsContext * CreateMeasuringContext() wxOVERRIDE;
|
|
#ifdef __WXMSW__
|
|
#if wxUSE_ENH_METAFILE
|
|
virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
|
|
#endif
|
|
#endif
|
|
// Path
|
|
|
|
virtual wxGraphicsPath CreatePath() wxOVERRIDE;
|
|
|
|
// Matrix
|
|
|
|
virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
|
|
wxDouble tx=0.0, wxDouble ty=0.0) wxOVERRIDE;
|
|
|
|
|
|
virtual wxGraphicsPen CreatePen(const wxGraphicsPenInfo& info) wxOVERRIDE ;
|
|
|
|
virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) wxOVERRIDE ;
|
|
|
|
virtual wxGraphicsBrush
|
|
CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
|
|
wxDouble x2, wxDouble y2,
|
|
const wxGraphicsGradientStops& stops,
|
|
const wxGraphicsMatrix& matrix = wxNullGraphicsMatrix) wxOVERRIDE;
|
|
|
|
virtual wxGraphicsBrush
|
|
CreateRadialGradientBrush(wxDouble startX, wxDouble startY,
|
|
wxDouble endX, wxDouble endY,
|
|
wxDouble radius,
|
|
const wxGraphicsGradientStops& stops,
|
|
const wxGraphicsMatrix& matrix = wxNullGraphicsMatrix) wxOVERRIDE;
|
|
|
|
// sets the font
|
|
virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) wxOVERRIDE ;
|
|
virtual wxGraphicsFont CreateFont(double sizeInPixels,
|
|
const wxString& facename,
|
|
int flags = wxFONTFLAG_DEFAULT,
|
|
const wxColour& col = *wxBLACK) wxOVERRIDE;
|
|
virtual wxGraphicsFont CreateFontAtDPI(const wxFont& font,
|
|
const wxRealPoint& dpi,
|
|
const wxColour& col) wxOVERRIDE;
|
|
|
|
// create a native bitmap representation
|
|
virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap ) wxOVERRIDE;
|
|
#if wxUSE_IMAGE
|
|
virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image) wxOVERRIDE;
|
|
virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp) wxOVERRIDE;
|
|
#endif // wxUSE_IMAGE
|
|
|
|
// create a graphics bitmap from a native bitmap
|
|
virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap ) wxOVERRIDE;
|
|
|
|
// create a subimage from a native image representation
|
|
virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) wxOVERRIDE;
|
|
|
|
virtual wxString GetName() const wxOVERRIDE;
|
|
virtual void GetVersion(int *major, int *minor, int *micro) const wxOVERRIDE;
|
|
|
|
wxDECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer);
|
|
} ;
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// wxCairoRenderer implementation
|
|
//-----------------------------------------------------------------------------
|
|
|
|
wxIMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer);
|
|
|
|
static wxCairoRenderer gs_cairoGraphicsRenderer;
|
|
|
|
#ifdef __WXGTK__
|
|
#define ENSURE_LOADED_OR_RETURN(returnOnFail)
|
|
#else
|
|
#define ENSURE_LOADED_OR_RETURN(returnOnFail) \
|
|
if (!wxCairoInit()) \
|
|
return returnOnFail
|
|
#endif
|
|
|
|
wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
return new wxCairoContext(this,dc);
|
|
}
|
|
|
|
wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
return new wxCairoContext(this,dc);
|
|
}
|
|
|
|
#if wxUSE_PRINTING_ARCHITECTURE
|
|
wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
return new wxCairoContext(this, dc);
|
|
}
|
|
#endif
|
|
|
|
#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
|
|
wxGraphicsContext * wxCairoRenderer::CreateContext(const wxEnhMetaFileDC& dc)
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
return new wxCairoContext(this, dc);
|
|
}
|
|
#endif // __WXMSW__ && wxUSE_ENH_METAFILE
|
|
|
|
wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext(void * context)
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
#ifdef __WXMSW__
|
|
DWORD objType = ::GetObjectType((HGDIOBJ)context);
|
|
if (objType == 0)
|
|
return new wxCairoContext(this, (cairo_t*)context);
|
|
|
|
if (objType == OBJ_DC || objType == OBJ_MEMDC)
|
|
return new wxCairoContext(this, (HDC)context);
|
|
|
|
return NULL;
|
|
#else
|
|
return new wxCairoContext(this,(cairo_t*)context);
|
|
#endif
|
|
}
|
|
|
|
|
|
wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
#ifdef __WXGTK__
|
|
return new wxCairoContext(this, static_cast<GdkWindow*>(window));
|
|
#elif defined(__WXMSW__)
|
|
return new wxCairoContext(this, static_cast<HWND>(window));
|
|
#else
|
|
wxUnusedVar(window);
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
#ifdef __WXMSW__
|
|
wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeHDC(WXHDC dc)
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
return new wxCairoContext(this, (HDC)dc);
|
|
}
|
|
#endif
|
|
|
|
#if wxUSE_IMAGE
|
|
wxGraphicsContext * wxCairoRenderer::CreateContextFromImage(wxImage& image)
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
return new wxCairoImageContext(this, image);
|
|
}
|
|
#endif // wxUSE_IMAGE
|
|
|
|
wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
|
|
{
|
|
#ifdef __WXGTK__
|
|
return CreateContextFromNativeWindow(gdk_get_default_root_window());
|
|
#elif defined(__WXMSW__)
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
return new wxCairoMeasuringContext(this);
|
|
#else
|
|
return NULL;
|
|
// TODO
|
|
#endif
|
|
}
|
|
|
|
wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(NULL);
|
|
return new wxCairoContext(this, window );
|
|
}
|
|
|
|
// Path
|
|
|
|
wxGraphicsPath wxCairoRenderer::CreatePath()
|
|
{
|
|
wxGraphicsPath path;
|
|
ENSURE_LOADED_OR_RETURN(path);
|
|
path.SetRefData( new wxCairoPathData(this) );
|
|
return path;
|
|
}
|
|
|
|
|
|
// Matrix
|
|
|
|
wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
|
|
wxDouble tx, wxDouble ty)
|
|
|
|
{
|
|
wxGraphicsMatrix m;
|
|
ENSURE_LOADED_OR_RETURN(m);
|
|
wxCairoMatrixData* data = new wxCairoMatrixData( this );
|
|
data->Set( a,b,c,d,tx,ty ) ;
|
|
m.SetRefData(data);
|
|
return m;
|
|
}
|
|
|
|
wxGraphicsPen wxCairoRenderer::CreatePen(const wxGraphicsPenInfo& info)
|
|
{
|
|
wxGraphicsPen p;
|
|
ENSURE_LOADED_OR_RETURN(p);
|
|
if (info.GetStyle() != wxPENSTYLE_TRANSPARENT)
|
|
{
|
|
p.SetRefData(new wxCairoPenData( this, info ));
|
|
}
|
|
return p;
|
|
}
|
|
|
|
wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
|
|
{
|
|
wxGraphicsBrush p;
|
|
ENSURE_LOADED_OR_RETURN(p);
|
|
if (brush.IsOk() && brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
|
|
{
|
|
p.SetRefData(new wxCairoBrushData( this, brush ));
|
|
}
|
|
return p;
|
|
}
|
|
|
|
wxGraphicsBrush
|
|
wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
|
|
wxDouble x2, wxDouble y2,
|
|
const wxGraphicsGradientStops& stops,
|
|
const wxGraphicsMatrix& matrix)
|
|
{
|
|
wxGraphicsBrush p;
|
|
ENSURE_LOADED_OR_RETURN(p);
|
|
wxCairoBrushData* d = new wxCairoBrushData( this );
|
|
d->CreateLinearGradientPattern(x1, y1, x2, y2, stops, matrix);
|
|
p.SetRefData(d);
|
|
return p;
|
|
}
|
|
|
|
wxGraphicsBrush
|
|
wxCairoRenderer::CreateRadialGradientBrush(wxDouble startX, wxDouble startY,
|
|
wxDouble endX, wxDouble endY, wxDouble r,
|
|
const wxGraphicsGradientStops& stops,
|
|
const wxGraphicsMatrix& matrix)
|
|
{
|
|
wxGraphicsBrush p;
|
|
ENSURE_LOADED_OR_RETURN(p);
|
|
wxCairoBrushData* d = new wxCairoBrushData( this );
|
|
d->CreateRadialGradientPattern(startX, startY, endX, endY, r, stops, matrix);
|
|
p.SetRefData(d);
|
|
return p;
|
|
}
|
|
|
|
|
|
wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
|
|
{
|
|
wxGraphicsFont p;
|
|
ENSURE_LOADED_OR_RETURN(p);
|
|
if ( font.IsOk() )
|
|
{
|
|
p.SetRefData(new wxCairoFontData( this , font, col ));
|
|
}
|
|
return p;
|
|
}
|
|
|
|
wxGraphicsFont
|
|
wxCairoRenderer::CreateFont(double sizeInPixels,
|
|
const wxString& facename,
|
|
int flags,
|
|
const wxColour& col)
|
|
{
|
|
wxGraphicsFont font;
|
|
ENSURE_LOADED_OR_RETURN(font);
|
|
font.SetRefData(new wxCairoFontData(this, sizeInPixels, facename, flags, col));
|
|
return font;
|
|
}
|
|
|
|
wxGraphicsFont
|
|
wxCairoRenderer::CreateFontAtDPI(const wxFont& font,
|
|
const wxRealPoint& WXUNUSED(dpi),
|
|
const wxColour& col)
|
|
{
|
|
return CreateFont(font, col);
|
|
}
|
|
|
|
wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
|
|
{
|
|
wxGraphicsBitmap p;
|
|
ENSURE_LOADED_OR_RETURN(p);
|
|
if ( bmp.IsOk() )
|
|
{
|
|
p.SetRefData(new wxCairoBitmapData( this , bmp ));
|
|
}
|
|
return p;
|
|
}
|
|
|
|
#if wxUSE_IMAGE
|
|
|
|
wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromImage(const wxImage& image)
|
|
{
|
|
wxGraphicsBitmap bmp;
|
|
|
|
ENSURE_LOADED_OR_RETURN(bmp);
|
|
|
|
if ( image.IsOk() )
|
|
{
|
|
bmp.SetRefData(new wxCairoBitmapData(this, image));
|
|
}
|
|
|
|
return bmp;
|
|
}
|
|
|
|
wxImage wxCairoRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
|
|
{
|
|
wxImage image;
|
|
ENSURE_LOADED_OR_RETURN(image);
|
|
|
|
const wxCairoBitmapData* const
|
|
data = static_cast<wxCairoBitmapData*>(bmp.GetGraphicsData());
|
|
if (data)
|
|
image = data->ConvertToImage();
|
|
|
|
return image;
|
|
}
|
|
|
|
#endif // wxUSE_IMAGE
|
|
|
|
|
|
wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
|
|
{
|
|
wxGraphicsBitmap p;
|
|
ENSURE_LOADED_OR_RETURN(p);
|
|
if ( bitmap != NULL )
|
|
{
|
|
p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
|
|
}
|
|
return p;
|
|
}
|
|
|
|
wxGraphicsBitmap
|
|
wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& bitmap,
|
|
wxDouble x, wxDouble y,
|
|
wxDouble w, wxDouble h)
|
|
{
|
|
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
|
|
|
|
wxCHECK_MSG(!bitmap.IsNull(), wxNullGraphicsBitmap, wxS("Invalid bitmap"));
|
|
|
|
wxCairoBitmapData* dataSrc = static_cast<wxCairoBitmapData*>(bitmap.GetRefData());
|
|
cairo_surface_t* srcSurface = dataSrc->GetCairoSurface();
|
|
wxCHECK_MSG(srcSurface, wxNullGraphicsBitmap, wxS("Invalid bitmap"));
|
|
|
|
int srcWidth = cairo_image_surface_get_width(srcSurface);
|
|
int srcHeight = cairo_image_surface_get_height(srcSurface);
|
|
|
|
int dstWidth = wxRound(w);
|
|
int dstHeight = wxRound(h);
|
|
|
|
wxCHECK_MSG( x >= 0.0 && y >= 0.0 && dstWidth > 0 && dstHeight > 0 &&
|
|
x + dstWidth <= srcWidth && y + dstHeight <= srcHeight,
|
|
wxNullGraphicsBitmap, wxS("Invalid bitmap region"));
|
|
|
|
cairo_surface_t* dstSurface;
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
|
|
if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 12, 0) )
|
|
{
|
|
dstSurface = cairo_surface_create_similar_image(srcSurface,
|
|
cairo_image_surface_get_format(srcSurface),
|
|
dstWidth, dstHeight);
|
|
}
|
|
else
|
|
#endif // Cairo 1.12
|
|
{
|
|
dstSurface = cairo_surface_create_similar(srcSurface,
|
|
CAIRO_CONTENT_COLOR_ALPHA,
|
|
dstWidth, dstHeight);
|
|
}
|
|
|
|
cairo_t* cr = cairo_create(dstSurface);
|
|
cairo_set_source_surface(cr, srcSurface, -x, -y);
|
|
|
|
cairo_rectangle(cr, 0.0, 0.0, dstWidth, dstHeight);
|
|
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
|
|
cairo_fill(cr);
|
|
cairo_destroy(cr);
|
|
|
|
wxGraphicsBitmap bmpRes;
|
|
bmpRes.SetRefData(new wxCairoBitmapData(this, dstSurface));
|
|
return bmpRes;
|
|
}
|
|
|
|
wxString wxCairoRenderer::GetName() const
|
|
{
|
|
return "cairo";
|
|
}
|
|
|
|
void wxCairoRenderer::GetVersion(int *major, int *minor, int *micro) const
|
|
{
|
|
int dummy;
|
|
sscanf(cairo_version_string(), "%d.%d.%d",
|
|
major ? major : &dummy,
|
|
minor ? minor : &dummy,
|
|
micro ? micro : &dummy);
|
|
}
|
|
|
|
wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
|
|
{
|
|
return &gs_cairoGraphicsRenderer;
|
|
}
|
|
|
|
#else // !wxUSE_CAIRO
|
|
|
|
wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
#endif // wxUSE_CAIRO/!wxUSE_CAIRO
|
|
|
|
// MSW and OS X and Qt on Windows have their own native default renderers, but the other ports
|
|
// use Cairo by default.
|
|
#if !(defined(__WXMSW__) || defined(__WXOSX__) || (defined(__WXQT__) && defined(__WIN32__)))
|
|
wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
|
|
{
|
|
return GetCairoRenderer();
|
|
}
|
|
#endif // !(__WXMSW__ || __WXOSX__ || (defined(__WXQT__) && defined(__WIN32__)))
|
|
|
|
#endif // wxUSE_GRAPHICS_CONTEXT
|