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13bc5380f22abbd24ace1cfd9c5a84294889d7df
wxWidgets/src/msw/graphics.cpp
Stefan Csomor 13bc5380f2 fixing classname 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42165 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2006-10-20 12:58:30 +00:00

971 lines
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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 GDILoader
{
public :
GDILoader()
{
m_loaded = false;
m_gditoken = NULL;
}
~GDILoader()
{
if (m_loaded)
{
Unload();
}
}
void EnsureIsLoaded()
{
if (!m_loaded)
{
Load();
}
}
void Load()
{
GdiplusStartupInput input;
GdiplusStartupOutput output;
GdiplusStartup(&m_gditoken,&input,&output);
m_loaded = true;
}
void Unload()
{
if ( m_gditoken )
GdiplusShutdown(m_gditoken);
}
private :
bool m_loaded;
DWORD m_gditoken;
};
static GDILoader gGDILoader;
class WXDLLEXPORT wxGDIPlusPath : public wxGraphicsPath
{
DECLARE_NO_COPY_CLASS(wxGDIPlusPath)
public :
wxGDIPlusPath();
~wxGDIPlusPath();
//
// 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) ;
// 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 ) ;
*/
GraphicsPath* GetPath() const;
private :
GraphicsPath* m_path;
};
class WXDLLEXPORT wxGDIPlusContext : public wxGraphicsContext
{
DECLARE_NO_COPY_CLASS(wxGDIPlusContext)
public:
wxGDIPlusContext( WXHDC hdc );
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 = wxWINDING_RULE );
virtual wxGraphicsPath* CreatePath();
virtual void SetPen( const wxPen &pen );
virtual void SetBrush( const wxBrush &brush );
virtual void SetLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, const wxColour&c1, const wxColour&c2) ;
virtual void SetRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
const wxColour &oColor, const wxColour &cColor);
virtual void Translate( wxDouble dx , wxDouble dy );
virtual void Scale( wxDouble xScale , wxDouble yScale );
virtual void Rotate( wxDouble angle );
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 SetFont( const wxFont &font );
virtual void SetTextColor( const wxColour &col );
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;
private:
Graphics* m_context;
vector<GraphicsState> m_stateStack;
GraphicsState m_state1;
GraphicsState m_state2;
Pen* m_pen;
bool m_penTransparent;
Image* m_penImage;
Brush* m_penBrush;
Brush* m_brush;
bool m_brushTransparent;
Image* m_brushImage;
GraphicsPath* m_brushPath;
Brush* m_textBrush;
Font* m_font;
// wxPen m_pen;
// wxBrush m_brush;
};
wxGDIPlusPath::wxGDIPlusPath()
{
m_path = new GraphicsPath();
}
wxGDIPlusPath::~wxGDIPlusPath()
{
delete m_path;
}
GraphicsPath* wxGDIPlusPath::GetPath() const
{
return m_path;
}
//
// The Primitives
//
void wxGDIPlusPath::MoveToPoint( wxDouble x , wxDouble y )
{
m_path->StartFigure();
m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
}
void wxGDIPlusPath::AddLineToPoint( wxDouble x , wxDouble y )
{
m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
}
void wxGDIPlusPath::CloseSubpath()
{
m_path->CloseFigure();
}
void wxGDIPlusPath::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 wxGDIPlusPath::GetCurrentPoint( wxDouble& x, wxDouble&y)
{
PointF start;
m_path->GetLastPoint(&start);
x = start.X ;
y = start.Y ;
}
void wxGDIPlusPath::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 wxGDIPlusPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
m_path->AddRectangle(RectF(x,y,w,h));
}
//
//
//
/*
// closes the current subpath
void wxGDIPlusPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
{
// CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
}
*/
//-----------------------------------------------------------------------------
// wxGDIPlusContext implementation
//-----------------------------------------------------------------------------
wxGDIPlusContext::wxGDIPlusContext( WXHDC hdc )
{
gGDILoader.EnsureIsLoaded();
m_context = new Graphics( (HDC) hdc);
m_context->SetSmoothingMode(SmoothingModeHighQuality);
m_state1 = m_context->Save();
m_state2 = m_context->Save();
// set defaults
m_penTransparent = false;
m_pen = new Pen((ARGB)Color::Black);
m_penImage = NULL;
m_penBrush = NULL;
m_brushTransparent = false;
m_brush = new SolidBrush((ARGB)Color::White);
m_brushImage = NULL;
m_brushPath = NULL;
m_textBrush = new SolidBrush((ARGB)Color::Black);
m_font = new Font( L"Arial" , 9 , FontStyleRegular );
}
wxGDIPlusContext::~wxGDIPlusContext()
{
if ( m_context )
{
m_context->Restore( m_state2 );
m_context->Restore( m_state1 );
delete m_context;
delete m_pen;
delete m_penImage;
delete m_penBrush;
delete m_brush;
delete m_brushImage;
delete m_brushPath;
delete m_textBrush;
delete m_font;
}
}
void wxGDIPlusContext::Clip( const wxRegion & WXUNUSED(region) )
{
// TODO
}
void wxGDIPlusContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
// TODO
}
void wxGDIPlusContext::ResetClip()
{
// TODO
}
void wxGDIPlusContext::StrokePath( const wxGraphicsPath *p )
{
if ( m_penTransparent )
return;
const wxGDIPlusPath* path = dynamic_cast< const wxGDIPlusPath*>( p );
m_context->DrawPath( m_pen , path->GetPath() );
}
void wxGDIPlusContext::FillPath( const wxGraphicsPath *p , int fillStyle )
{
if ( !m_brushTransparent )
{
const wxGDIPlusPath* path = dynamic_cast< const wxGDIPlusPath*>( p );
path->GetPath()->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
m_context->FillPath( m_brush , path->GetPath() );
}
}
wxGraphicsPath* wxGDIPlusContext::CreatePath()
{
return new wxGDIPlusPath();
}
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);
}
void wxGDIPlusContext::SetTextColor( const wxColour &col )
{
delete m_textBrush;
m_textBrush = new SolidBrush( Color( col.Alpha() , col.Red() ,
col.Green() , col.Blue() ));
}
void wxGDIPlusContext::SetPen( const wxPen &pen )
{
m_penTransparent = pen.GetStyle() == wxTRANSPARENT;
if ( m_penTransparent )
return;
m_pen->SetColor( Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
pen.GetColour().Green() , pen.GetColour().Blue() ) );
// TODO: * m_dc->m_scaleX
double penWidth = pen.GetWidth();
if (penWidth <= 0.0)
penWidth = 0.1;
m_pen->SetWidth(penWidth);
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() )
{
wxDELETE( m_penImage );
wxDELETE( m_penBrush );
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 )
{
wxDELETE( m_penBrush );
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);
}
void wxGDIPlusContext::SetBrush( const wxBrush &brush )
{
// m_brush = brush;
if ( m_context == NULL )
return;
m_brushTransparent = brush.GetStyle() == wxTRANSPARENT;
if ( m_brushTransparent )
return;
wxDELETE(m_brush);
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);
}
}
}
void wxGDIPlusContext::SetLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, const wxColour&c1, const wxColour&c2)
{
m_brushTransparent = false ;
wxDELETE(m_brush);
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 wxGDIPlusContext::SetRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
const wxColour &oColor, const wxColour &cColor)
{
m_brushTransparent = false ;
wxDELETE(m_brush);
wxDELETE(m_brushPath);
// 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);
}
// 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 ( 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 )
{
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 iconBmpData ;
GetObject(iconInfo.hbmColor,sizeof(BITMAP),&iconBmpData);
Bitmap interim(iconInfo.hbmColor,NULL);
Bitmap* image = NULL ;
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);
image = new Bitmap(data.Width, data.Height, data.Stride,
PixelFormat32bppARGB , (BYTE*) data.Scan0);
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 ( str.IsEmpty())
return ;
wxWCharBuffer s = str.wc_str( *wxConvUI );
m_context->DrawString( s , -1 , m_font , PointF( x , y ) , m_textBrush );
// TODO m_backgroundMode == wxSOLID
}
void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
wxDouble *descent, wxDouble *externalLeading ) const
{
wxWCharBuffer s = str.wc_str( *wxConvUI );
FontFamily ffamily ;
m_font->GetFamily(&ffamily) ;
REAL factorY = m_context->GetDpiY() / 72.0 ;
REAL rDescent = ffamily.GetCellDescent(FontStyleRegular) *
m_font->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
REAL rAscent = ffamily.GetCellAscent(FontStyleRegular) *
m_font->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
REAL rHeight = ffamily.GetLineSpacing(FontStyleRegular) *
m_font->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
if ( height )
*height = rHeight * factorY + 0.5 ;
if ( descent )
*descent = rDescent * factorY + 0.5 ;
if ( externalLeading )
*externalLeading = (rHeight - rAscent - rDescent) * factorY + 0.5 ;
// measuring empty strings is not guaranteed, so do it by hand
if ( str.IsEmpty())
{
if ( width )
*width = 0 ;
}
else
{
// MeasureString does return a rectangle that is way too large, so it is
// not usable here
RectF layoutRect(0,0, 100000.0f, 100000.0f);
StringFormat strFormat;
CharacterRange strRange(0,wcslen(s));
strFormat.SetMeasurableCharacterRanges(1,&strRange);
Region region ;
m_context->MeasureCharacterRanges(s, -1 , m_font,layoutRect, &strFormat,1,&region) ;
RectF bbox ;
region.GetBounds(&bbox,m_context);
if ( width )
*width = bbox.GetRight()-bbox.GetLeft()+0.5;
}
}
void wxGDIPlusContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
{
widths.Empty();
widths.Add(0, text.length());
if (text.empty())
return;
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;
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);
m_context->MeasureCharacterRanges(ws, -1 , m_font,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();
}
}
void wxGDIPlusContext::SetFont( const wxFont &font )
{
wxASSERT( font.Ok());
delete m_font;
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 );
}
void* wxGDIPlusContext::GetNativeContext()
{
return m_context;
}
wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC& dc)
{
return new wxGDIPlusContext( (HDC) dc.GetHDC() );
}
wxGraphicsContext* wxGraphicsContext::Create( wxWindow * window )
{
return NULL; // TODO
}
wxGraphicsContext* wxGraphicsContext::CreateFromNative( void * context )
{
return NULL; // TODO
}
#endif // wxUSE_GRAPHICS_CONTEXT
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