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248e9b58343c0c3232c11c6cf02bb9ae3bf864ea
wxWidgets/src/msw/graphics.cpp
Stefan Csomor 248e9b5834 extensions and fixes 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@49266 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2007-10-20 15:23:18 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: src/msw/graphics.cpp
// Purpose: wxGCDC class
// Author: Stefan Csomor
// Modified by:
// Created: 2006-09-30
// RCS-ID: $Id$
// Copyright: (c) 2006 Stefan Csomor
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include "wx/wxprec.h"
#include "wx/dc.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/msw/wrapcdlg.h"
#include "wx/image.h"
#include "wx/window.h"
#include "wx/dc.h"
#include "wx/utils.h"
#include "wx/dialog.h"
#include "wx/app.h"
#include "wx/bitmap.h"
#include "wx/dcmemory.h"
#include "wx/log.h"
#include "wx/icon.h"
#include "wx/dcprint.h"
#include "wx/module.h"
#endif
#include "wx/graphics.h"
#if wxUSE_GRAPHICS_CONTEXT
#include <vector>
using namespace std;
//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------
const double RAD2DEG = 180.0 / M_PI;
//-----------------------------------------------------------------------------
// Local functions
//-----------------------------------------------------------------------------
static inline double dmin(double a, double b) { return a < b ? a : b; }
static inline double dmax(double a, double b) { return a > b ? a : b; }
static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
static inline double RadToDeg(double deg) { return (deg * 180.0) / M_PI; }
//-----------------------------------------------------------------------------
// device context implementation
//
// more and more of the dc functionality should be implemented by calling
// the appropricate wxGDIPlusContext, but we will have to do that step by step
// also coordinate conversions should be moved to native matrix ops
//-----------------------------------------------------------------------------
// we always stock two context states, one at entry, to be able to preserve the
// state we were called with, the other one after changing to HI Graphics orientation
// (this one is used for getting back clippings etc)
//-----------------------------------------------------------------------------
// wxGraphicsPath implementation
//-----------------------------------------------------------------------------
#include "wx/msw/private.h" // needs to be before #include <commdlg.h>
#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
#include <commdlg.h>
#endif
// TODO remove this dependency (gdiplus needs the macros)
#ifndef max
#define max(a,b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef min
#define min(a,b) (((a) < (b)) ? (a) : (b))
#endif
#include "gdiplus.h"
using namespace Gdiplus;
class WXDLLIMPEXP_CORE wxGDIPlusPathData : public wxGraphicsPathData
{
public :
wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path = NULL);
~wxGDIPlusPathData();
virtual wxGraphicsObjectRefData *Clone() const;
//
// These are the path primitives from which everything else can be constructed
//
// begins a new subpath at (x,y)
virtual void MoveToPoint( wxDouble x, wxDouble y );
// adds a straight line from the current point to (x,y)
virtual void AddLineToPoint( wxDouble x, wxDouble y );
// adds a cubic Bezier curve from the current point, using two control points and an end point
virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
// adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
// gets the last point of the current path, (0,0) if not yet set
virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
// adds another path
virtual void AddPath( const wxGraphicsPathData* path );
// closes the current sub-path
virtual void CloseSubpath();
//
// These are convenience functions which - if not available natively will be assembled
// using the primitives from above
//
// appends a rectangle as a new closed subpath
virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
/*
// appends an ellipsis as a new closed subpath fitting the passed rectangle
virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
// 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)
virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) ;
*/
// returns the native path
virtual void * GetNativePath() const { return m_path; }
// give the native path returned by GetNativePath() back (there might be some deallocations necessary)
virtual void UnGetNativePath(void * WXUNUSED(path)) const {}
// transforms each point of this path by the matrix
virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
// gets the bounding box enclosing all points (possibly including control points)
virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxODDEVEN_RULE) const;
private :
GraphicsPath* m_path;
};
class WXDLLIMPEXP_CORE wxGDIPlusMatrixData : public wxGraphicsMatrixData
{
public :
wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix = NULL) ;
virtual ~wxGDIPlusMatrixData() ;
virtual wxGraphicsObjectRefData* Clone() const ;
// concatenates the matrix
virtual void Concat( const wxGraphicsMatrixData *t );
// sets the matrix to the respective values
virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
wxDouble tx=0.0, wxDouble ty=0.0);
// gets the component valuess of the matrix
virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL, wxDouble* c=NULL,
wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
// makes this the inverse matrix
virtual void Invert();
// returns true if the elements of the transformation matrix are equal ?
virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
// return true if this is the identity matrix
virtual bool IsIdentity() const;
//
// transformation
//
// add the translation to this matrix
virtual void Translate( wxDouble dx , wxDouble dy );
// add the scale to this matrix
virtual void Scale( wxDouble xScale , wxDouble yScale );
// add the rotation to this matrix (radians)
virtual void Rotate( wxDouble angle );
//
// apply the transforms
//
// applies that matrix to the point
virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
// applies the matrix except for translations
virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
// returns the native representation
virtual void * GetNativeMatrix() const;
private:
Matrix* m_matrix ;
} ;
class WXDLLIMPEXP_CORE wxGDIPlusPenData : public wxGraphicsObjectRefData
{
public:
wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
~wxGDIPlusPenData();
void Init();
virtual wxDouble GetWidth() { return m_width; }
virtual Pen* GetGDIPlusPen() { return m_pen; }
protected :
Pen* m_pen;
Image* m_penImage;
Brush* m_penBrush;
wxDouble m_width;
};
class WXDLLIMPEXP_CORE wxGDIPlusBrushData : public wxGraphicsObjectRefData
{
public:
wxGDIPlusBrushData( wxGraphicsRenderer* renderer );
wxGDIPlusBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
~wxGDIPlusBrushData ();
void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
const wxColour&c1, const wxColour&c2 );
void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
const wxColour &oColor, const wxColour &cColor );
virtual Brush* GetGDIPlusBrush() { return m_brush; }
protected:
virtual void Init();
private :
Brush* m_brush;
Image* m_brushImage;
GraphicsPath* m_brushPath;
};
class WXDLLIMPEXP_CORE wxGDIPlusFontData : public wxGraphicsObjectRefData
{
public:
wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
~wxGDIPlusFontData();
virtual Brush* GetGDIPlusBrush() { return m_textBrush; }
virtual Font* GetGDIPlusFont() { return m_font; }
private :
Brush* m_textBrush;
Font* m_font;
};
class WXDLLIMPEXP_CORE wxGDIPlusContext : public wxGraphicsContext
{
public:
wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc );
wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd );
wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr);
wxGDIPlusContext();
virtual ~wxGDIPlusContext();
virtual void Clip( const wxRegion &region );
// clips drawings to the rect
virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
// resets the clipping to original extent
virtual void ResetClip();
virtual void * GetNativeContext();
virtual void StrokePath( const wxGraphicsPath& p );
virtual void FillPath( const wxGraphicsPath& p , int fillStyle = wxODDEVEN_RULE );
virtual void DrawPath( const wxGraphicsPath& path, int fillStyle = wxODDEVEN_RULE );
// stroke lines connecting each of the points
virtual void StrokeLines( size_t n, const wxPoint2DDouble *points);
// draws a polygon
virtual void DrawLines( size_t n, const wxPoint2DDouble *points, int fillStyle = wxODDEVEN_RULE );
virtual void Translate( wxDouble dx , wxDouble dy );
virtual void Scale( wxDouble xScale , wxDouble yScale );
virtual void Rotate( wxDouble angle );
// concatenates this transform with the current transform of this context
virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
// sets the transform of this context
virtual void SetTransform( const wxGraphicsMatrix& matrix );
// gets the matrix of this context
virtual wxGraphicsMatrix GetTransform() const;
virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
virtual void PushState();
virtual void PopState();
virtual void DrawText( const wxString &str, wxDouble x, wxDouble y);
virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
wxDouble *descent, wxDouble *externalLeading ) const;
virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
virtual bool ShouldOffset() const;
private:
void Init();
void SetDefaults();
Graphics* m_context;
vector<GraphicsState> m_stateStack;
GraphicsState m_state1;
GraphicsState m_state2;
DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusContext)
};
class WXDLLIMPEXP_CORE wxGDIPlusMeasuringContext : public wxGDIPlusContext
{
public:
wxGDIPlusMeasuringContext( wxGraphicsRenderer* renderer ) : wxGDIPlusContext( renderer , m_hdc = GetDC(NULL) )
{
}
wxGDIPlusMeasuringContext()
{
}
virtual ~wxGDIPlusMeasuringContext()
{
ReleaseDC( NULL, m_hdc );
}
private:
HDC m_hdc ;
DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusMeasuringContext)
} ;
//-----------------------------------------------------------------------------
// wxGDIPlusPen implementation
//-----------------------------------------------------------------------------
wxGDIPlusPenData::~wxGDIPlusPenData()
{
delete m_pen;
delete m_penImage;
delete m_penBrush;
}
void wxGDIPlusPenData::Init()
{
m_pen = NULL ;
m_penImage = NULL;
m_penBrush = NULL;
}
wxGDIPlusPenData::wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
: wxGraphicsObjectRefData(renderer)
{
Init();
m_width = pen.GetWidth();
if (m_width <= 0.0)
m_width = 0.1;
m_pen = new Pen(Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
pen.GetColour().Green() , pen.GetColour().Blue() ), m_width );
LineCap cap;
switch ( pen.GetCap() )
{
case wxCAP_ROUND :
cap = LineCapRound;
break;
case wxCAP_PROJECTING :
cap = LineCapSquare;
break;
case wxCAP_BUTT :
cap = LineCapFlat; // TODO verify
break;
default :
cap = LineCapFlat;
break;
}
m_pen->SetLineCap(cap,cap, DashCapFlat);
LineJoin join;
switch ( pen.GetJoin() )
{
case wxJOIN_BEVEL :
join = LineJoinBevel;
break;
case wxJOIN_MITER :
join = LineJoinMiter;
break;
case wxJOIN_ROUND :
join = LineJoinRound;
break;
default :
join = LineJoinMiter;
break;
}
m_pen->SetLineJoin(join);
m_pen->SetDashStyle(DashStyleSolid);
DashStyle dashStyle = DashStyleSolid;
switch ( pen.GetStyle() )
{
case wxSOLID :
break;
case wxDOT :
dashStyle = DashStyleDot;
break;
case wxLONG_DASH :
dashStyle = DashStyleDash; // TODO verify
break;
case wxSHORT_DASH :
dashStyle = DashStyleDash;
break;
case wxDOT_DASH :
dashStyle = DashStyleDashDot;
break;
case wxUSER_DASH :
{
dashStyle = DashStyleCustom;
wxDash *dashes;
int count = pen.GetDashes( &dashes );
if ((dashes != NULL) && (count > 0))
{
REAL *userLengths = new REAL[count];
for ( int i = 0; i < count; ++i )
{
userLengths[i] = dashes[i];
}
m_pen->SetDashPattern( userLengths, count);
delete[] userLengths;
}
}
break;
case wxSTIPPLE :
{
wxBitmap* bmp = pen.GetStipple();
if ( bmp && bmp->Ok() )
{
m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
m_penBrush = new TextureBrush(m_penImage);
m_pen->SetBrush( m_penBrush );
}
}
break;
default :
if ( pen.GetStyle() >= wxFIRST_HATCH && pen.GetStyle() <= wxLAST_HATCH )
{
HatchStyle style = HatchStyleHorizontal;
switch( pen.GetStyle() )
{
case wxBDIAGONAL_HATCH :
style = HatchStyleBackwardDiagonal;
break ;
case wxCROSSDIAG_HATCH :
style = HatchStyleDiagonalCross;
break ;
case wxFDIAGONAL_HATCH :
style = HatchStyleForwardDiagonal;
break ;
case wxCROSS_HATCH :
style = HatchStyleCross;
break ;
case wxHORIZONTAL_HATCH :
style = HatchStyleHorizontal;
break ;
case wxVERTICAL_HATCH :
style = HatchStyleVertical;
break ;
}
m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
pen.GetColour().Green() , pen.GetColour().Blue() ), Color::Transparent );
m_pen->SetBrush( m_penBrush );
}
break;
}
if ( dashStyle != DashStyleSolid )
m_pen->SetDashStyle(dashStyle);
}
//-----------------------------------------------------------------------------
// wxGDIPlusBrush implementation
//-----------------------------------------------------------------------------
wxGDIPlusBrushData::wxGDIPlusBrushData( wxGraphicsRenderer* renderer )
: wxGraphicsObjectRefData(renderer)
{
Init();
}
wxGDIPlusBrushData::wxGDIPlusBrushData( wxGraphicsRenderer* renderer , const wxBrush &brush )
: wxGraphicsObjectRefData(renderer)
{
Init();
if ( brush.GetStyle() == wxSOLID)
{
m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
brush.GetColour().Green() , brush.GetColour().Blue() ) );
}
else if ( brush.IsHatch() )
{
HatchStyle style = HatchStyleHorizontal;
switch( brush.GetStyle() )
{
case wxBDIAGONAL_HATCH :
style = HatchStyleBackwardDiagonal;
break ;
case wxCROSSDIAG_HATCH :
style = HatchStyleDiagonalCross;
break ;
case wxFDIAGONAL_HATCH :
style = HatchStyleForwardDiagonal;
break ;
case wxCROSS_HATCH :
style = HatchStyleCross;
break ;
case wxHORIZONTAL_HATCH :
style = HatchStyleHorizontal;
break ;
case wxVERTICAL_HATCH :
style = HatchStyleVertical;
break ;
}
m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
brush.GetColour().Green() , brush.GetColour().Blue() ), Color::Transparent );
}
else
{
wxBitmap* bmp = brush.GetStipple();
if ( bmp && bmp->Ok() )
{
wxDELETE( m_brushImage );
m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
m_brush = new TextureBrush(m_brushImage);
}
}
}
wxGDIPlusBrushData::~wxGDIPlusBrushData()
{
delete m_brush;
delete m_brushImage;
delete m_brushPath;
};
void wxGDIPlusBrushData::Init()
{
m_brush = NULL;
m_brushImage= NULL;
m_brushPath= NULL;
}
void wxGDIPlusBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, const wxColour&c1, const wxColour&c2)
{
m_brush = new LinearGradientBrush( PointF( x1,y1) , PointF( x2,y2),
Color( c1.Alpha(), c1.Red(),c1.Green() , c1.Blue() ),
Color( c2.Alpha(), c2.Red(),c2.Green() , c2.Blue() ));
}
void wxGDIPlusBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
const wxColour &oColor, const wxColour &cColor)
{
// Create a path that consists of a single circle.
m_brushPath = new GraphicsPath();
m_brushPath->AddEllipse( (REAL)(xc-radius), (REAL)(yc-radius), (REAL)(2*radius), (REAL)(2*radius));
PathGradientBrush *b = new PathGradientBrush(m_brushPath);
m_brush = b;
b->SetCenterPoint( PointF(xo,yo));
b->SetCenterColor(Color( oColor.Alpha(), oColor.Red(),oColor.Green() , oColor.Blue() ));
Color colors[] = {Color( cColor.Alpha(), cColor.Red(),cColor.Green() , cColor.Blue() )};
int count = 1;
b->SetSurroundColors(colors, &count);
}
//-----------------------------------------------------------------------------
// wxGDIPlusFont implementation
//-----------------------------------------------------------------------------
wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font,
const wxColour& col ) : wxGraphicsObjectRefData( renderer )
{
m_textBrush = NULL;
m_font = NULL;
wxWCharBuffer s = font.GetFaceName().wc_str( *wxConvUI );
int size = font.GetPointSize();
int style = FontStyleRegular;
if ( font.GetStyle() == wxFONTSTYLE_ITALIC )
style |= FontStyleItalic;
if ( font.GetUnderlined() )
style |= FontStyleUnderline;
if ( font.GetWeight() == wxFONTWEIGHT_BOLD )
style |= FontStyleBold;
m_font = new Font( s , size , style );
m_textBrush = new SolidBrush( Color( col.Alpha() , col.Red() ,
col.Green() , col.Blue() ));
}
wxGDIPlusFontData::~wxGDIPlusFontData()
{
delete m_textBrush;
delete m_font;
}
//-----------------------------------------------------------------------------
// wxGDIPlusPath implementation
//-----------------------------------------------------------------------------
wxGDIPlusPathData::wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path ) : wxGraphicsPathData(renderer)
{
if ( path )
m_path = path;
else
m_path = new GraphicsPath();
}
wxGDIPlusPathData::~wxGDIPlusPathData()
{
delete m_path;
}
wxGraphicsObjectRefData* wxGDIPlusPathData::Clone() const
{
return new wxGDIPlusPathData( GetRenderer() , m_path->Clone());
}
//
// The Primitives
//
void wxGDIPlusPathData::MoveToPoint( wxDouble x , wxDouble y )
{
m_path->StartFigure();
m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
}
void wxGDIPlusPathData::AddLineToPoint( wxDouble x , wxDouble y )
{
m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
}
void wxGDIPlusPathData::CloseSubpath()
{
m_path->CloseFigure();
}
void wxGDIPlusPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
{
PointF c1(cx1,cy1);
PointF c2(cx2,cy2);
PointF end(x,y);
PointF start;
m_path->GetLastPoint(&start);
m_path->AddBezier(start,c1,c2,end);
}
// gets the last point of the current path, (0,0) if not yet set
void wxGDIPlusPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
{
PointF start;
m_path->GetLastPoint(&start);
*x = start.X ;
*y = start.Y ;
}
void wxGDIPlusPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
{
double sweepAngle = endAngle - startAngle ;
if( abs(sweepAngle) >= 2*M_PI)
{
sweepAngle = 2 * M_PI;
}
else
{
if ( clockwise )
{
if( sweepAngle < 0 )
sweepAngle += 2 * M_PI;
}
else
{
if( sweepAngle > 0 )
sweepAngle -= 2 * M_PI;
}
}
m_path->AddArc((REAL) (x-r),(REAL) (y-r),(REAL) (2*r),(REAL) (2*r),RadToDeg(startAngle),RadToDeg(sweepAngle));
}
void wxGDIPlusPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
m_path->AddRectangle(RectF(x,y,w,h));
}
void wxGDIPlusPathData::AddPath( const wxGraphicsPathData* path )
{
m_path->AddPath( (GraphicsPath*) path->GetNativePath(), FALSE);
}
// transforms each point of this path by the matrix
void wxGDIPlusPathData::Transform( const wxGraphicsMatrixData* matrix )
{
m_path->Transform( (Matrix*) matrix->GetNativeMatrix() );
}
// gets the bounding box enclosing all points (possibly including control points)
void wxGDIPlusPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
{
RectF bounds;
m_path->GetBounds( &bounds, NULL, NULL) ;
*x = bounds.X;
*y = bounds.Y;
*w = bounds.Width;
*h = bounds.Height;
}
bool wxGDIPlusPathData::Contains( wxDouble x, wxDouble y, int fillStyle ) const
{
m_path->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
return m_path->IsVisible( (FLOAT) x,(FLOAT) y) == TRUE ;
}
//-----------------------------------------------------------------------------
// wxGDIPlusMatrixData implementation
//-----------------------------------------------------------------------------
wxGDIPlusMatrixData::wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix )
: wxGraphicsMatrixData(renderer)
{
if ( matrix )
m_matrix = matrix ;
else
m_matrix = new Matrix();
}
wxGDIPlusMatrixData::~wxGDIPlusMatrixData()
{
delete m_matrix;
}
wxGraphicsObjectRefData *wxGDIPlusMatrixData::Clone() const
{
return new wxGDIPlusMatrixData( GetRenderer(), m_matrix->Clone());
}
// concatenates the matrix
void wxGDIPlusMatrixData::Concat( const wxGraphicsMatrixData *t )
{
m_matrix->Multiply( (Matrix*) t->GetNativeMatrix());
}
// sets the matrix to the respective values
void wxGDIPlusMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
wxDouble tx, wxDouble ty)
{
m_matrix->SetElements(a,b,c,d,tx,ty);
}
// gets the component valuess of the matrix
void wxGDIPlusMatrixData::Get(wxDouble* a, wxDouble* b, wxDouble* c,
wxDouble* d, wxDouble* tx, wxDouble* ty) const
{
REAL elements[6];
m_matrix->GetElements(elements);
if (a) *a = elements[0];
if (b) *b = elements[1];
if (c) *c = elements[2];
if (d) *d = elements[3];
if (tx) *tx= elements[4];
if (ty) *ty= elements[5];
}
// makes this the inverse matrix
void wxGDIPlusMatrixData::Invert()
{
m_matrix->Invert();
}
// returns true if the elements of the transformation matrix are equal ?
bool wxGDIPlusMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
{
return m_matrix->Equals((Matrix*) t->GetNativeMatrix())== TRUE ;
}
// return true if this is the identity matrix
bool wxGDIPlusMatrixData::IsIdentity() const
{
return m_matrix->IsIdentity() == TRUE ;
}
//
// transformation
//
// add the translation to this matrix
void wxGDIPlusMatrixData::Translate( wxDouble dx , wxDouble dy )
{
m_matrix->Translate(dx,dy);
}
// add the scale to this matrix
void wxGDIPlusMatrixData::Scale( wxDouble xScale , wxDouble yScale )
{
m_matrix->Scale(xScale,yScale);
}
// add the rotation to this matrix (radians)
void wxGDIPlusMatrixData::Rotate( wxDouble angle )
{
m_matrix->Rotate( angle );
}
//
// apply the transforms
//
// applies that matrix to the point
void wxGDIPlusMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
{
PointF pt(*x,*y);
m_matrix->TransformPoints(&pt);
*x = pt.X;
*y = pt.Y;
}
// applies the matrix except for translations
void wxGDIPlusMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
{
PointF pt(*dx,*dy);
m_matrix->TransformVectors(&pt);
*dx = pt.X;
*dy = pt.Y;
}
// returns the native representation
void * wxGDIPlusMatrixData::GetNativeMatrix() const
{
return m_matrix;
}
//-----------------------------------------------------------------------------
// wxGDIPlusContext implementation
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusContext,wxGraphicsContext)
IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusMeasuringContext,wxGDIPlusContext)
class wxGDIPlusOffsetHelper
{
public :
wxGDIPlusOffsetHelper( Graphics* gr , bool offset )
{
m_gr = gr;
m_offset = offset;
if ( m_offset )
m_gr->TranslateTransform( 0.5, 0.5 );
}
~wxGDIPlusOffsetHelper( )
{
if ( m_offset )
m_gr->TranslateTransform( -0.5, -0.5 );
}
public :
Graphics* m_gr;
bool m_offset;
} ;
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc )
: wxGraphicsContext(renderer)
{
Init();
m_context = new Graphics( hdc);
SetDefaults();
}
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd )
: wxGraphicsContext(renderer)
{
Init();
m_context = new Graphics( hwnd);
SetDefaults();
}
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr )
: wxGraphicsContext(renderer)
{
Init();
m_context = gr;
SetDefaults();
}
wxGDIPlusContext::wxGDIPlusContext() : wxGraphicsContext(NULL)
{
Init();
}
void wxGDIPlusContext::Init()
{
m_context = NULL;
m_state1 = 0;
m_state2= 0;
}
void wxGDIPlusContext::SetDefaults()
{
m_context->SetTextRenderingHint(TextRenderingHintSystemDefault);
m_context->SetPixelOffsetMode(PixelOffsetModeHalf);
m_context->SetSmoothingMode(SmoothingModeHighQuality);
m_state1 = m_context->Save();
m_state2 = m_context->Save();
}
wxGDIPlusContext::~wxGDIPlusContext()
{
if ( m_context )
{
m_context->Restore( m_state2 );
m_context->Restore( m_state1 );
delete m_context;
}
}
void wxGDIPlusContext::Clip( const wxRegion &region )
{
Region rgn((HRGN)region.GetHRGN());
m_context->SetClip(&rgn,CombineModeIntersect);
}
void wxGDIPlusContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
m_context->SetClip(RectF(x,y,w,h),CombineModeIntersect);
}
void wxGDIPlusContext::ResetClip()
{
m_context->ResetClip();
}
void wxGDIPlusContext::StrokeLines( size_t n, const wxPoint2DDouble *points)
{
if ( !m_pen.IsNull() )
{
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
Point *cpoints = new Point[n];
for (size_t i = 0; i < n; i++)
{
cpoints[i].X = (int)(points[i].m_x );
cpoints[i].Y = (int)(points[i].m_y );
} // for (size_t i = 0; i < n; i++)
m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ;
delete[] cpoints;
}
}
void wxGDIPlusContext::DrawLines( size_t n, const wxPoint2DDouble *points, int WXUNUSED(fillStyle) )
{
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
Point *cpoints = new Point[n];
for (size_t i = 0; i < n; i++)
{
cpoints[i].X = (int)(points[i].m_x );
cpoints[i].Y = (int)(points[i].m_y );
} // for (int i = 0; i < n; i++)
if ( !m_brush.IsNull() )
m_context->FillPolygon( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() , cpoints , n ) ;
if ( !m_pen.IsNull() )
m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ;
delete[] cpoints;
}
void wxGDIPlusContext::StrokePath( const wxGraphicsPath& path )
{
if ( !m_pen.IsNull() )
{
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
m_context->DrawPath( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , (GraphicsPath*) path.GetNativePath() );
}
}
void wxGDIPlusContext::FillPath( const wxGraphicsPath& path , int fillStyle )
{
if ( !m_brush.IsNull() )
{
((GraphicsPath*) path.GetNativePath())->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
m_context->FillPath( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() ,
(GraphicsPath*) path.GetNativePath());
}
}
void wxGDIPlusContext::DrawPath( const wxGraphicsPath& path, int fillStyle )
{
{
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
FillPath( path , fillStyle );
}
StrokePath( path );
}
void wxGDIPlusContext::Rotate( wxDouble angle )
{
m_context->RotateTransform( RadToDeg(angle) );
}
void wxGDIPlusContext::Translate( wxDouble dx , wxDouble dy )
{
m_context->TranslateTransform( dx , dy );
}
void wxGDIPlusContext::Scale( wxDouble xScale , wxDouble yScale )
{
m_context->ScaleTransform(xScale,yScale);
}
void wxGDIPlusContext::PushState()
{
GraphicsState state = m_context->Save();
m_stateStack.push_back(state);
}
void wxGDIPlusContext::PopState()
{
GraphicsState state = m_stateStack.back();
m_stateStack.pop_back();
m_context->Restore(state);
}
// the built-in conversions functions create non-premultiplied bitmaps, while GDIPlus needs them in the
// premultiplied format, therefore in the failing cases we create a new bitmap using the non-premultiplied
// bytes as parameter
void wxGDIPlusContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
Bitmap* image = NULL;
Bitmap* helper = NULL;
if ( bmp.GetMask() )
{
Bitmap interim((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE()) ;
size_t width = interim.GetWidth();
size_t height = interim.GetHeight();
Rect bounds(0,0,width,height);
image = new Bitmap(width,height,PixelFormat32bppPARGB) ;
Bitmap interimMask((HBITMAP)bmp.GetMask()->GetMaskBitmap(),NULL);
wxASSERT(interimMask.GetPixelFormat() == PixelFormat1bppIndexed);
BitmapData dataMask ;
interimMask.LockBits(&bounds,ImageLockModeRead,
interimMask.GetPixelFormat(),&dataMask);
BitmapData imageData ;
image->LockBits(&bounds,ImageLockModeWrite, PixelFormat32bppPARGB, &imageData);
BYTE maskPattern = 0 ;
BYTE maskByte = 0;
size_t maskIndex ;
for ( size_t y = 0 ; y < height ; ++y)
{
maskIndex = 0 ;
for( size_t x = 0 ; x < width; ++x)
{
if ( x % 8 == 0)
{
maskPattern = 0x80;
maskByte = *((BYTE*)dataMask.Scan0 + dataMask.Stride*y + maskIndex);
maskIndex++;
}
else
maskPattern = maskPattern >> 1;
ARGB *dest = (ARGB*)((BYTE*)imageData.Scan0 + imageData.Stride*y + x*4);
if ( (maskByte & maskPattern) == 0 )
*dest = 0x00000000;
else
{
Color c ;
interim.GetPixel(x,y,&c) ;
*dest = (c.GetValue() | Color::AlphaMask);
}
}
}
image->UnlockBits(&imageData);
interimMask.UnlockBits(&dataMask);
interim.UnlockBits(&dataMask);
}
else
{
image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());
if ( bmp.HasAlpha() && GetPixelFormatSize(image->GetPixelFormat()) == 32 )
{
size_t width = image->GetWidth();
size_t height = image->GetHeight();
Rect bounds(0,0,width,height);
BitmapData data ;
helper = image ;
image = NULL ;
helper->LockBits(&bounds, ImageLockModeRead,
helper->GetPixelFormat(),&data);
image = new Bitmap(data.Width, data.Height, data.Stride,
PixelFormat32bppARGB , (BYTE*) data.Scan0);
helper->UnlockBits(&data);
}
}
if ( image )
m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
delete image ;
delete helper ;
}
void wxGDIPlusContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
// the built-in conversion fails when there is alpha in the HICON (eg XP style icons), we can only
// find out by looking at the bitmap data whether there really was alpha in it
HICON hIcon = (HICON)icon.GetHICON();
ICONINFO iconInfo ;
// IconInfo creates the bitmaps for color and mask, we must dispose of them after use
if (!GetIconInfo(hIcon,&iconInfo))
return;
Bitmap interim(iconInfo.hbmColor,NULL);
Bitmap* image = NULL ;
// if it's not 32 bit, it doesn't have an alpha channel, note that since the conversion doesn't
// work correctly, asking IsAlphaPixelFormat at this point fails as well
if( GetPixelFormatSize(interim.GetPixelFormat())!= 32 )
{
image = Bitmap::FromHICON(hIcon);
}
else
{
size_t width = interim.GetWidth();
size_t height = interim.GetHeight();
Rect bounds(0,0,width,height);
BitmapData data ;
interim.LockBits(&bounds, ImageLockModeRead,
interim.GetPixelFormat(),&data);
bool hasAlpha = false;
for ( size_t y = 0 ; y < height && !hasAlpha ; ++y)
{
for( size_t x = 0 ; x < width && !hasAlpha; ++x)
{
ARGB *dest = (ARGB*)((BYTE*)data.Scan0 + data.Stride*y + x*4);
if ( ( *dest & Color::AlphaMask ) != 0 )
hasAlpha = true;
}
}
if ( hasAlpha )
{
image = new Bitmap(data.Width, data.Height, data.Stride,
PixelFormat32bppARGB , (BYTE*) data.Scan0);
}
else
{
image = Bitmap::FromHICON(hIcon);
}
interim.UnlockBits(&data);
}
m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
delete image ;
DeleteObject(iconInfo.hbmColor);
DeleteObject(iconInfo.hbmMask);
}
void wxGDIPlusContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
{
if ( m_font.IsNull() || str.IsEmpty())
return ;
wxWCharBuffer s = str.wc_str( *wxConvUI );
m_context->DrawString( s , -1 , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont() ,
PointF( x , y ) , StringFormat::GenericTypographic() , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusBrush() );
}
void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
wxDouble *descent, wxDouble *externalLeading ) const
{
wxWCharBuffer s = str.wc_str( *wxConvUI );
FontFamily ffamily ;
Font* f = ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont();
f->GetFamily(&ffamily) ;
REAL factorY = m_context->GetDpiY() / 72.0 ;
REAL rDescent = ffamily.GetCellDescent(FontStyleRegular) *
f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
REAL rAscent = ffamily.GetCellAscent(FontStyleRegular) *
f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
REAL rHeight = ffamily.GetLineSpacing(FontStyleRegular) *
f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
if ( height )
*height = rHeight * factorY;
if ( descent )
*descent = rDescent * factorY;
if ( externalLeading )
*externalLeading = (rHeight - rAscent - rDescent) * factorY;
// measuring empty strings is not guaranteed, so do it by hand
if ( str.IsEmpty())
{
if ( width )
*width = 0 ;
}
else
{
RectF layoutRect(0,0, 100000.0f, 100000.0f);
StringFormat strFormat( StringFormat::GenericTypographic() );
strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() );
RectF bounds ;
m_context->MeasureString((const wchar_t *) s , wcslen(s) , f, layoutRect, &strFormat, &bounds ) ;
if ( width )
*width = bounds.Width;
}
}
void wxGDIPlusContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
{
widths.Empty();
widths.Add(0, text.length());
if (text.empty())
return;
Font* f = ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont();
wxWCharBuffer ws = text.wc_str( *wxConvUI );
size_t len = wcslen( ws ) ;
wxASSERT_MSG(text.length() == len , wxT("GetPartialTextExtents not yet implemented for multichar situations"));
RectF layoutRect(0,0, 100000.0f, 100000.0f);
StringFormat strFormat( StringFormat::GenericTypographic() );
CharacterRange* ranges = new CharacterRange[len] ;
Region* regions = new Region[len];
for( size_t i = 0 ; i < len ; ++i)
{
ranges[i].First = i ;
ranges[i].Length = 1 ;
}
strFormat.SetMeasurableCharacterRanges(len,ranges);
strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() );
m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,1,regions) ;
RectF bbox ;
for ( size_t i = 0 ; i < len ; ++i)
{
regions[i].GetBounds(&bbox,m_context);
widths[i] = bbox.GetRight()-bbox.GetLeft();
}
}
bool wxGDIPlusContext::ShouldOffset() const
{
int penwidth = 0 ;
if ( !m_pen.IsNull() )
{
penwidth = (int)((wxGDIPlusPenData*)m_pen.GetRefData())->GetWidth();
if ( penwidth == 0 )
penwidth = 1;
}
return ( penwidth % 2 ) == 1;
}
void* wxGDIPlusContext::GetNativeContext()
{
return m_context;
}
// concatenates this transform with the current transform of this context
void wxGDIPlusContext::ConcatTransform( const wxGraphicsMatrix& matrix )
{
m_context->MultiplyTransform((Matrix*) matrix.GetNativeMatrix());
}
// sets the transform of this context
void wxGDIPlusContext::SetTransform( const wxGraphicsMatrix& matrix )
{
m_context->SetTransform((Matrix*) matrix.GetNativeMatrix());
}
// gets the matrix of this context
wxGraphicsMatrix wxGDIPlusContext::GetTransform() const
{
wxGraphicsMatrix matrix = CreateMatrix();
m_context->GetTransform((Matrix*) matrix.GetNativeMatrix());
return matrix;
}
//-----------------------------------------------------------------------------
// wxGDIPlusRenderer declaration
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxGDIPlusRenderer : public wxGraphicsRenderer
{
public :
wxGDIPlusRenderer()
{
m_loaded = false;
m_gditoken = 0;
}
virtual ~wxGDIPlusRenderer()
{
if (m_loaded)
{
Unload();
}
}
// Context
virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
virtual wxGraphicsContext * CreateContext( wxWindow* window );
virtual wxGraphicsContext * CreateMeasuringContext();
// Path
virtual wxGraphicsPath CreatePath();
// 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);
virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
// sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
const wxColour&c1, const wxColour&c2) ;
// sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
// with radius r and color cColor
virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
const wxColour &oColor, const wxColour &cColor) ;
// sets the font
virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
protected :
void EnsureIsLoaded();
void Load();
void Unload();
private :
bool m_loaded;
ULONG_PTR m_gditoken;
DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusRenderer)
} ;
//-----------------------------------------------------------------------------
// wxGDIPlusRenderer implementation
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusRenderer,wxGraphicsRenderer)
static wxGDIPlusRenderer gs_GDIPlusRenderer;
wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
{
return &gs_GDIPlusRenderer;
}
void wxGDIPlusRenderer::EnsureIsLoaded()
{
if (!m_loaded)
{
Load();
}
}
void wxGDIPlusRenderer::Load()
{
GdiplusStartupInput input;
GdiplusStartupOutput output;
GdiplusStartup(&m_gditoken,&input,&output);
m_loaded = true;
}
void wxGDIPlusRenderer::Unload()
{
if ( m_gditoken )
GdiplusShutdown(m_gditoken);
}
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxWindowDC& dc)
{
EnsureIsLoaded();
return new wxGDIPlusContext(this,(HDC) dc.GetHDC());
}
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxMemoryDC& dc)
{
EnsureIsLoaded();
return new wxGDIPlusContext(this,(HDC) dc.GetHDC());
}
wxGraphicsContext * wxGDIPlusRenderer::CreateMeasuringContext()
{
EnsureIsLoaded();
return new wxGDIPlusMeasuringContext(this);
}
wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeContext( void * context )
{
EnsureIsLoaded();
return new wxGDIPlusContext(this,(Graphics*) context);
}
wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeWindow( void * window )
{
EnsureIsLoaded();
return new wxGDIPlusContext(this,(HWND) window);
}
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( wxWindow* window )
{
EnsureIsLoaded();
return new wxGDIPlusContext(this, (HWND) window->GetHWND() );
}
// Path
wxGraphicsPath wxGDIPlusRenderer::CreatePath()
{
EnsureIsLoaded();
wxGraphicsPath m;
m.SetRefData( new wxGDIPlusPathData(this));
return m;
}
// Matrix
wxGraphicsMatrix wxGDIPlusRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
wxDouble tx, wxDouble ty)
{
EnsureIsLoaded();
wxGraphicsMatrix m;
wxGDIPlusMatrixData* data = new wxGDIPlusMatrixData( this );
data->Set( a,b,c,d,tx,ty ) ;
m.SetRefData(data);
return m;
}
wxGraphicsPen wxGDIPlusRenderer::CreatePen(const wxPen& pen)
{
EnsureIsLoaded();
if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
return wxNullGraphicsPen;
else
{
wxGraphicsPen p;
p.SetRefData(new wxGDIPlusPenData( this, pen ));
return p;
}
}
wxGraphicsBrush wxGDIPlusRenderer::CreateBrush(const wxBrush& brush )
{
EnsureIsLoaded();
if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
return wxNullGraphicsBrush;
else
{
wxGraphicsBrush p;
p.SetRefData(new wxGDIPlusBrushData( this, brush ));
return p;
}
}
// sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
wxGraphicsBrush wxGDIPlusRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
const wxColour&c1, const wxColour&c2)
{
EnsureIsLoaded();
wxGraphicsBrush p;
wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
p.SetRefData(d);
return p;
}
// sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
// with radius r and color cColor
wxGraphicsBrush wxGDIPlusRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
const wxColour &oColor, const wxColour &cColor)
{
EnsureIsLoaded();
wxGraphicsBrush p;
wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
p.SetRefData(d);
return p;
}
// sets the font
wxGraphicsFont wxGDIPlusRenderer::CreateFont( const wxFont &font , const wxColour &col )
{
EnsureIsLoaded();
if ( font.Ok() )
{
wxGraphicsFont p;
p.SetRefData(new wxGDIPlusFontData( this , font, col ));
return p;
}
else
return wxNullGraphicsFont;
}
#endif // wxUSE_GRAPHICS_CONTEXT
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