#include "wx/wxprec.h"
-#include "wx/dc.h"
-
#ifdef __BORLANDC__
-#pragma hdrstop
+ #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"
+
+#if wxUSE_GRAPHICS_CONTEXT
+
+#ifndef WX_PRECOMP
+ #include "wx/msw/wrapcdlg.h"
+ #include "wx/image.h"
+ #include "wx/window.h"
+ #include "wx/utils.h"
+ #include "wx/dialog.h"
+ #include "wx/app.h"
+ #include "wx/bitmap.h"
+ #include "wx/log.h"
+ #include "wx/icon.h"
+ #include "wx/module.h"
+ // include all dc types that are used as a param
+ #include "wx/dc.h"
+ #include "wx/dcclient.h"
+ #include "wx/dcmemory.h"
+ #include "wx/dcprint.h"
+#endif
+
+#include "wx/private/graphics.h"
+#include "wx/msw/wrapgdip.h"
+#include "wx/msw/dc.h"
+#if wxUSE_ENH_METAFILE
+ #include "wx/msw/enhmeta.h"
#endif
+#include "wx/dcgraph.h"
-#include "wx/graphics.h"
+#include "wx/msw/private.h" // needs to be before #include <commdlg.h>
-#if wxUSE_GRAPHICS_CONTEXT
+#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
+#include <commdlg.h>
+#endif
-#include <vector>
+#include "wx/stack.h"
-using namespace std;
+namespace
+{
//-----------------------------------------------------------------------------
// constants
// 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; }
+inline double dmin(double a, double b) { return a < b ? a : b; }
+inline double dmax(double a, double b) { return a > b ? a : b; }
+
+inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
+inline double RadToDeg(double deg) { return (deg * 180.0) / M_PI; }
-static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
-static inline double RadToDeg(double deg) { return (deg * 180.0) / M_PI; }
+// translate a wxColour to a Color
+inline Color wxColourToColor(const wxColour& col)
+{
+ return Color(col.Alpha(), col.Red(), col.Green(), col.Blue());
+}
+
+} // anonymous namespace
//-----------------------------------------------------------------------------
// device context implementation
// 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 wxGDIPlusContext;
-class WXDLLIMPEXP_CORE wxGDIPlusPathData : public wxGraphicsPathData
+class wxGDIPlusPathData : public wxGraphicsPathData
{
public :
wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path = NULL);
// 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)
+ // 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
+ // 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 CloseSubpath();
//
- // These are convenience functions which - if not available natively will be assembled
+ // 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
+ // appends a rectangle as a new closed subpath
virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
/*
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 {}
+ // 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;
+ virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
private :
GraphicsPath* m_path;
};
-class WXDLLIMPEXP_CORE wxGDIPlusMatrixData : public wxGraphicsMatrixData
+class wxGDIPlusMatrixData : public wxGraphicsMatrixData
{
public :
wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix = NULL) ;
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,
+ 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();
virtual void Scale( wxDouble xScale , wxDouble yScale );
// add the rotation to this matrix (radians)
- virtual void Rotate( wxDouble angle );
+ virtual void Rotate( wxDouble angle );
//
// apply the transforms
Matrix* m_matrix ;
} ;
-class WXDLLIMPEXP_CORE wxGDIPlusPenData : public wxGraphicsObjectRefData
+class wxGDIPlusPenData : public wxGraphicsObjectRefData
{
public:
wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
wxDouble m_width;
};
-class WXDLLIMPEXP_CORE wxGDIPlusBrushData : public wxGraphicsObjectRefData
+class 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 );
+ void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+ wxDouble x2, wxDouble y2,
+ const wxGraphicsGradientStops& stops);
+ void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+ wxDouble xc, wxDouble yc,
+ wxDouble radius,
+ const wxGraphicsGradientStops& stops);
+
virtual Brush* GetGDIPlusBrush() { return m_brush; }
protected:
virtual void Init();
-private :
+private:
+ // common part of Create{Linear,Radial}GradientBrush()
+ template <typename T>
+ void SetGradientStops(T *brush, const wxGraphicsGradientStops& stops);
+
Brush* m_brush;
Image* m_brushImage;
GraphicsPath* m_brushPath;
};
-class WXDLLIMPEXP_CORE wxGDIPlusFontData : public wxGraphicsObjectRefData
+class WXDLLIMPEXP_CORE wxGDIPlusBitmapData : public wxGraphicsObjectRefData
+{
+public:
+ wxGDIPlusBitmapData( wxGraphicsRenderer* renderer, Bitmap* bitmap );
+ wxGDIPlusBitmapData( wxGraphicsRenderer* renderer, const wxBitmap &bmp );
+ ~wxGDIPlusBitmapData ();
+
+ virtual Bitmap* GetGDIPlusBitmap() { return m_bitmap; }
+
+private :
+ Bitmap* m_bitmap;
+ Bitmap* m_helper;
+};
+
+class wxGDIPlusFontData : public wxGraphicsObjectRefData
{
public:
- wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
+ wxGDIPlusFontData( wxGraphicsRenderer* renderer,
+ const wxGDIPlusContext* gc,
+ const wxFont &font,
+ const wxColour& col );
~wxGDIPlusFontData();
virtual Brush* GetGDIPlusBrush() { return m_textBrush; }
Font* m_font;
};
-class WXDLLIMPEXP_CORE wxGDIPlusContext : public wxGraphicsContext
+class wxGDIPlusContext : public wxGraphicsContext
{
public:
- wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc );
+ wxGDIPlusContext( wxGraphicsRenderer* renderer, const wxDC& dc );
+ wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc, wxDouble width, wxDouble height );
wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd );
wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr);
wxGDIPlusContext();
virtual void Clip( const wxRegion ®ion );
// 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();
-
+ // 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 FillPath( const wxGraphicsPath& p , wxPolygonFillMode 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, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
+
+ virtual bool SetAntialiasMode(wxAntialiasMode antialias);
- virtual void Translate( wxDouble dx , wxDouble dy );
- virtual void Scale( wxDouble xScale , wxDouble yScale );
- virtual void Rotate( wxDouble angle );
+ virtual bool SetCompositionMode(wxCompositionMode op);
+
+ virtual void BeginLayer(wxDouble opacity);
+
+ virtual void EndLayer();
+
+ 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 );
// gets the matrix of this context
virtual wxGraphicsMatrix GetTransform() const;
+ virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
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 PushState();
virtual void PopState();
- virtual void DrawText( const wxString &str, wxDouble x, wxDouble y);
+ // sets the font of this context
+ virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const;
+
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;
+ virtual void GetSize( wxDouble* width, wxDouble *height );
+
+ Graphics* GetGraphics() const { return m_context; }
+
+protected:
+
+ wxDouble m_fontScaleRatio;
private:
void Init();
void SetDefaults();
+ virtual void DoDrawText(const wxString& str, wxDouble x, wxDouble y)
+ { DoDrawFilledText(str, x, y, wxNullGraphicsBrush); }
+ virtual void DoDrawFilledText(const wxString& str, wxDouble x, wxDouble y,
+ const wxGraphicsBrush& backgroundBrush);
+
Graphics* m_context;
- vector<GraphicsState> m_stateStack;
+ wxStack<GraphicsState> m_stateStack;
GraphicsState m_state1;
GraphicsState m_state2;
+ wxDouble m_width;
+ wxDouble m_height;
+
DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusContext)
};
+class wxGDIPlusMeasuringContext : public wxGDIPlusContext
+{
+public:
+ wxGDIPlusMeasuringContext( wxGraphicsRenderer* renderer ) : wxGDIPlusContext( renderer , m_hdc = GetDC(NULL), 1000, 1000 )
+ {
+ }
+ wxGDIPlusMeasuringContext()
+ {
+ }
+
+ virtual ~wxGDIPlusMeasuringContext()
+ {
+ ReleaseDC( NULL, m_hdc );
+ }
+
+private:
+ HDC m_hdc ;
+ DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusMeasuringContext)
+} ;
+
+class wxGDIPlusPrintingContext : public wxGDIPlusContext
+{
+public:
+ wxGDIPlusPrintingContext( wxGraphicsRenderer* renderer, const wxDC& dc );
+ virtual ~wxGDIPlusPrintingContext() { }
+protected:
+};
+
+//-----------------------------------------------------------------------------
+// wxGDIPlusRenderer declaration
+//-----------------------------------------------------------------------------
+
+class wxGDIPlusRenderer : public wxGraphicsRenderer
+{
+public :
+ wxGDIPlusRenderer()
+ {
+ m_loaded = -1;
+ m_gditoken = 0;
+ }
+
+ virtual ~wxGDIPlusRenderer()
+ {
+ if ( m_loaded == 1 )
+ {
+ Unload();
+ }
+ }
+
+ // Context
+
+ virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
+
+ virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
+
+#if wxUSE_PRINTING_ARCHITECTURE
+ virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
+#endif
+
+#if wxUSE_ENH_METAFILE
+ virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
+#endif
+
+ 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 ) ;
+
+ virtual wxGraphicsBrush
+ CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+ wxDouble x2, wxDouble y2,
+ const wxGraphicsGradientStops& stops);
+
+ virtual wxGraphicsBrush
+ CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+ wxDouble xc, wxDouble yc,
+ wxDouble radius,
+ const wxGraphicsGradientStops& stops);
+
+ // create a native bitmap representation
+ virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
+
+ // stub: should not be called directly
+ virtual wxGraphicsFont CreateFont( const wxFont& WXUNUSED(font),
+ const wxColour& WXUNUSED(col) )
+ { wxFAIL; return wxNullGraphicsFont; }
+
+ // this is used to really create the font
+ wxGraphicsFont CreateGDIPlusFont( const wxGDIPlusContext* gc,
+ const wxFont &font,
+ const wxColour &col );
+
+ // create a graphics bitmap from a native bitmap
+ virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
+
+ // create a subimage from a native image representation
+ virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
+
+protected :
+ bool EnsureIsLoaded();
+ void Load();
+ void Unload();
+ friend class wxGDIPlusRendererModule;
+
+private :
+ int m_loaded;
+ ULONG_PTR m_gditoken;
+
+ DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusRenderer)
+} ;
+
//-----------------------------------------------------------------------------
// wxGDIPlusPen implementation
//-----------------------------------------------------------------------------
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 );
+ m_pen = new Pen(wxColourToColor(pen.GetColour()), m_width );
LineCap cap;
switch ( pen.GetCap() )
wxBitmap* bmp = pen.GetStipple();
if ( bmp && bmp->Ok() )
{
- m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
+ m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),
+#if wxUSE_PALETTE
+ (HPALETTE)bmp->GetPalette()->GetHPALETTE()
+#else
+ NULL
+#endif
+ );
m_penBrush = new TextureBrush(m_penImage);
m_pen->SetBrush( m_penBrush );
}
break ;
}
- m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
- pen.GetColour().Green() , pen.GetColour().Blue() ), Color::Transparent );
+ m_penBrush = new HatchBrush
+ (
+ style,
+ wxColourToColor(pen.GetColour()),
+ Color::Transparent
+ );
m_pen->SetBrush( m_penBrush );
}
break;
- }
+ }
if ( dashStyle != DashStyleSolid )
m_pen->SetDashStyle(dashStyle);
}
Init();
if ( brush.GetStyle() == wxSOLID)
{
- m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
- brush.GetColour().Green() , brush.GetColour().Blue() ) );
+ m_brush = new SolidBrush(wxColourToColor( brush.GetColour()));
}
else if ( brush.IsHatch() )
{
break ;
}
- m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
- brush.GetColour().Green() , brush.GetColour().Blue() ), Color::Transparent );
+ m_brush = new HatchBrush
+ (
+ style,
+ wxColourToColor(brush.GetColour()),
+ Color::Transparent
+ );
}
- else
+ else
{
wxBitmap* bmp = brush.GetStipple();
if ( bmp && bmp->Ok() )
{
wxDELETE( m_brushImage );
- m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
+ m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),
+#if wxUSE_PALETTE
+ (HPALETTE)bmp->GetPalette()->GetHPALETTE()
+#else
+ NULL
+#endif
+ );
m_brush = new TextureBrush(m_brushImage);
}
}
m_brushPath= NULL;
}
-void wxGDIPlusBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, const wxColour&c1, const wxColour&c2)
+template <typename T>
+void
+wxGDIPlusBrushData::SetGradientStops(T *brush,
+ const wxGraphicsGradientStops& stops)
+{
+ const unsigned numStops = stops.GetCount();
+ if ( numStops <= 2 )
+ {
+ // initial and final colours are set during the brush creation, nothing
+ // more to do
+ return;
+ }
+
+ wxVector<Color> colors(numStops);
+ wxVector<REAL> positions(numStops);
+
+ for ( unsigned i = 0; i < numStops; i++ )
+ {
+ wxGraphicsGradientStop stop = stops.Item(i);
+
+ colors[i] = wxColourToColor(stop.GetColour());
+ positions[i] = stop.GetPosition();
+ }
+
+ brush->SetInterpolationColors(&colors[0], &positions[0], numStops);
+}
+
+void
+wxGDIPlusBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+ wxDouble x2, wxDouble y2,
+ const wxGraphicsGradientStops& stops)
{
- 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() ));
+ LinearGradientBrush * const
+ brush = new LinearGradientBrush(PointF(x1, y1) , PointF(x2, y2),
+ wxColourToColor(stops.GetStartColour()),
+ wxColourToColor(stops.GetEndColour()));
+ m_brush = brush;
+
+ SetGradientStops(brush, stops);
}
-void wxGDIPlusBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
- const wxColour &oColor, const wxColour &cColor)
+void
+wxGDIPlusBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+ wxDouble xc, wxDouble yc,
+ wxDouble radius,
+ const wxGraphicsGradientStops& stops)
{
- // 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));
+ 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() ));
+ PathGradientBrush * const brush = new PathGradientBrush(m_brushPath);
+ m_brush = brush;
+ brush->SetCenterPoint(PointF(xo, yo));
+ brush->SetCenterColor(wxColourToColor(stops.GetStartColour()));
- Color colors[] = {Color( cColor.Alpha(), cColor.Red(),cColor.Green() , cColor.Blue() )};
+ const Color col(wxColourToColor(stops.GetEndColour()));
int count = 1;
- b->SetSurroundColors(colors, &count);
+ brush->SetSurroundColors(&col, &count);
+
+ SetGradientStops(brush, stops);
}
//-----------------------------------------------------------------------------
// wxGDIPlusFont implementation
//-----------------------------------------------------------------------------
-wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font,
- const wxColour& col ) : wxGraphicsObjectRefData( renderer )
+wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer,
+ const wxGDIPlusContext* gc,
+ 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;
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() ));
+
+ Graphics* context = gc->GetGraphics();
+
+ Unit fontUnit = context->GetPageUnit();
+ // if fontUnit is UnitDisplay, then specify UnitPixel, otherwise
+ // you'll get a "InvalidParameter" from GDI+
+ if ( fontUnit == UnitDisplay )
+ fontUnit = UnitPixel;
+
+ REAL points = font.GetPointSize();
+
+ // This scaling is needed when we use unit other than the
+ // default UnitPoint. It works for both display and printing.
+ REAL size = points * (100.0 / 72.0);
+
+ // NB: font unit should match context's unit. We can use UnitPixel,
+ // as that is what the print context should use.
+ m_font = new Font( s, size, style, fontUnit );
+
+ m_textBrush = new SolidBrush(wxColourToColor(col));
}
wxGDIPlusFontData::~wxGDIPlusFontData()
delete m_font;
}
+// 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, since there is no real copying of the data going in, only references are stored
+// m_helper has to be kept alive as well
+
+//-----------------------------------------------------------------------------
+// wxGDIPlusBitmapData implementation
+//-----------------------------------------------------------------------------
+
+wxGDIPlusBitmapData::wxGDIPlusBitmapData( wxGraphicsRenderer* renderer, Bitmap* bitmap ) :
+ wxGraphicsObjectRefData( renderer ), m_bitmap( bitmap )
+{
+ m_helper = NULL;
+}
+
+wxGDIPlusBitmapData::wxGDIPlusBitmapData( wxGraphicsRenderer* renderer,
+ const wxBitmap &bmp) : wxGraphicsObjectRefData( renderer )
+{
+ m_bitmap = NULL;
+ m_helper = NULL;
+
+ Bitmap* image = NULL;
+ if ( bmp.GetMask() )
+ {
+ Bitmap interim((HBITMAP)bmp.GetHBITMAP(),
+#if wxUSE_PALETTE
+ (HPALETTE)bmp.GetPalette()->GetHPALETTE()
+#else
+ NULL
+#endif
+ );
+
+ 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(),
+#if wxUSE_PALETTE
+ (HPALETTE)bmp.GetPalette()->GetHPALETTE()
+#else
+ NULL
+#endif
+ );
+ if ( bmp.HasAlpha() && GetPixelFormatSize(image->GetPixelFormat()) == 32 )
+ {
+ size_t width = image->GetWidth();
+ size_t height = image->GetHeight();
+ Rect bounds(0,0,width,height);
+ static BitmapData data ;
+
+ m_helper = image ;
+ image = NULL ;
+ m_helper->LockBits(&bounds, ImageLockModeRead,
+ m_helper->GetPixelFormat(),&data);
+
+ image = new Bitmap(data.Width, data.Height, data.Stride,
+ PixelFormat32bppPARGB , (BYTE*) data.Scan0);
+
+ m_helper->UnlockBits(&data);
+ }
+ }
+ if ( image )
+ m_bitmap = image;
+}
+
+wxGDIPlusBitmapData::~wxGDIPlusBitmapData()
+{
+ delete m_bitmap;
+ delete m_helper;
+}
+
//-----------------------------------------------------------------------------
// wxGDIPlusPath implementation
//-----------------------------------------------------------------------------
*y = start.Y ;
}
-void wxGDIPlusPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
+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)
+ if( fabs(sweepAngle) >= 2*M_PI)
{
sweepAngle = 2 * M_PI;
}
}
}
- m_path->AddArc((REAL) (x-r),(REAL) (y-r),(REAL) (2*r),(REAL) (2*r),RadToDeg(startAngle),RadToDeg(sweepAngle));
+ 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 )
// transforms each point of this path by the matrix
-void wxGDIPlusPathData::Transform( const wxGraphicsMatrixData* matrix )
+void wxGDIPlusPathData::Transform( const wxGraphicsMatrixData* matrix )
{
m_path->Transform( (Matrix*) matrix->GetNativeMatrix() );
}
*h = bounds.Height;
}
-bool wxGDIPlusPathData::Contains( wxDouble x, wxDouble y, int fillStyle ) const
+bool wxGDIPlusPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
{
m_path->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
return m_path->IsVisible( (FLOAT) x,(FLOAT) y) == TRUE ;
m_matrix = new Matrix();
}
-wxGDIPlusMatrixData::~wxGDIPlusMatrixData()
+wxGDIPlusMatrixData::~wxGDIPlusMatrixData()
{
delete m_matrix;
}
-wxGraphicsObjectRefData *wxGDIPlusMatrixData::Clone() const
+wxGraphicsObjectRefData *wxGDIPlusMatrixData::Clone() const
{
return new wxGDIPlusMatrixData( GetRenderer(), m_matrix->Clone());
}
}
// sets the matrix to the respective values
-void wxGDIPlusMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
+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()
{
}
// returns true if the elements of the transformation matrix are equal ?
-bool wxGDIPlusMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
+bool wxGDIPlusMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
{
return m_matrix->Equals((Matrix*) t->GetNativeMatrix())== TRUE ;
}
// add the rotation to this matrix (radians)
void wxGDIPlusMatrixData::Rotate( wxDouble angle )
{
- m_matrix->Rotate( angle );
+ m_matrix->Rotate( RadToDeg(angle) );
}
//
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusContext,wxGraphicsContext)
+IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusMeasuringContext,wxGDIPlusContext)
-wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc )
- : wxGraphicsContext(renderer)
+class wxGDIPlusOffsetHelper
{
- Init();
- m_context = new Graphics( hdc);
+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, wxDouble width, wxDouble height )
+ : wxGraphicsContext(renderer)
+{
+ Init();
+ m_context = new Graphics( hdc);
+ m_width = width;
+ m_height = height;
+ SetDefaults();
+}
+
+wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, const wxDC& dc )
+ : wxGraphicsContext(renderer)
+{
+ Init();
+
+ wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
+ HDC hdc = (HDC) msw->GetHDC();
+
+ m_context = new Graphics(hdc);
+ wxSize sz = dc.GetSize();
+ m_width = sz.x;
+ m_height = sz.y;
+
SetDefaults();
}
{
Init();
m_context = new Graphics( hwnd);
+ RECT rect = wxGetWindowRect(hwnd);
+ m_width = rect.right - rect.left;
+ m_height = rect.bottom - rect.top;
SetDefaults();
}
m_context = NULL;
m_state1 = 0;
m_state2= 0;
+ m_height = 0;
+ m_width = 0;
+ m_fontScaleRatio = 1.0;
}
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();
void wxGDIPlusContext::Clip( const wxRegion ®ion )
{
- m_context->SetClip((HRGN)region.GetHRGN(),CombineModeIntersect);
+ 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_composition == wxCOMPOSITION_DEST)
+ return;
+
+ 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, wxPolygonFillMode WXUNUSED(fillStyle) )
+{
+ if (m_composition == wxCOMPOSITION_DEST)
+ return;
+
+ 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_composition == wxCOMPOSITION_DEST)
+ return;
+
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 )
+void wxGDIPlusContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
{
+ if (m_composition == wxCOMPOSITION_DEST)
+ return;
+
if ( !m_brush.IsNull() )
{
+ wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
((GraphicsPath*) path.GetNativePath())->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
- m_context->FillPath( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() ,
+ m_context->FillPath( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() ,
(GraphicsPath*) path.GetNativePath());
}
}
-void wxGDIPlusContext::Rotate( wxDouble angle )
+bool wxGDIPlusContext::SetAntialiasMode(wxAntialiasMode antialias)
+{
+ if (m_antialias == antialias)
+ return true;
+
+ m_antialias = antialias;
+
+ SmoothingMode antialiasMode;
+ switch (antialias)
+ {
+ case wxANTIALIAS_DEFAULT:
+ antialiasMode = SmoothingModeHighQuality;
+ break;
+ case wxANTIALIAS_NONE:
+ antialiasMode = SmoothingModeNone;
+ break;
+ default:
+ return false;
+ }
+ m_context->SetSmoothingMode(antialiasMode);
+ return true;
+}
+
+bool wxGDIPlusContext::SetCompositionMode(wxCompositionMode op)
+{
+ if ( m_composition == op )
+ return true;
+
+ m_composition = op;
+
+ if (m_composition == wxCOMPOSITION_DEST)
+ return true;
+
+ CompositingMode cop;
+ switch (op)
+ {
+ case wxCOMPOSITION_SOURCE:
+ cop = CompositingModeSourceCopy;
+ break;
+ case wxCOMPOSITION_OVER:
+ cop = CompositingModeSourceOver;
+ break;
+ default:
+ return false;
+ }
+
+ m_context->SetCompositingMode(cop);
+ return true;
+}
+
+void wxGDIPlusContext::BeginLayer(wxDouble /* opacity */)
+{
+ // TODO
+}
+
+void wxGDIPlusContext::EndLayer()
+{
+ // TODO
+}
+
+void wxGDIPlusContext::Rotate( wxDouble angle )
{
m_context->RotateTransform( RadToDeg(angle) );
}
-void wxGDIPlusContext::Translate( wxDouble dx , wxDouble dy )
+void wxGDIPlusContext::Translate( wxDouble dx , wxDouble dy )
{
m_context->TranslateTransform( dx , dy );
}
void wxGDIPlusContext::PushState()
{
GraphicsState state = m_context->Save();
- m_stateStack.push_back(state);
+ m_stateStack.push(state);
}
-void wxGDIPlusContext::PopState()
+void wxGDIPlusContext::PopState()
{
- GraphicsState state = m_stateStack.back();
- m_stateStack.pop_back();
+ GraphicsState state = m_stateStack.top();
+ m_stateStack.pop();
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 )
+void wxGDIPlusContext::DrawBitmap( const wxGraphicsBitmap &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);
+ if (m_composition == wxCOMPOSITION_DEST)
+ return;
- interimMask.UnlockBits(&dataMask);
- interim.UnlockBits(&dataMask);
- }
- else
+ Bitmap* image = static_cast<wxGDIPlusBitmapData*>(bmp.GetRefData())->GetGDIPlusBitmap();
+ if ( image )
{
- image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());
- if ( GetPixelFormatSize(image->GetPixelFormat()) == 32 )
+ if( image->GetWidth() != (UINT) w || image->GetHeight() != (UINT) h )
{
- 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);
+ Rect drawRect((REAL) x, (REAL)y, (REAL)w, (REAL)h);
+ m_context->SetPixelOffsetMode( PixelOffsetModeNone );
+ m_context->DrawImage(image, drawRect, 0 , 0 , image->GetWidth()-1, image->GetHeight()-1, UnitPixel ) ;
+ m_context->SetPixelOffsetMode( PixelOffsetModeHalf );
}
+ else
+ m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
}
- 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 )
+void wxGDIPlusContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
+ wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
+ DrawBitmap(bitmap, x, y, w, h);
+}
+
+void wxGDIPlusContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
+ if (m_composition == wxCOMPOSITION_DEST)
+ return;
+
+ // 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 iconBmpData ;
- GetObject(iconInfo.hbmColor,sizeof(BITMAP),&iconBmpData);
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);
interim.LockBits(&bounds, ImageLockModeRead,
interim.GetPixelFormat(),&data);
- image = new Bitmap(data.Width, data.Height, data.Stride,
+
+ 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);
}
DeleteObject(iconInfo.hbmMask);
}
-void wxGDIPlusContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
+wxGraphicsFont wxGDIPlusContext::CreateFont( const wxFont &font,
+ const wxColour &col ) const
{
- if ( m_font.IsNull() || str.IsEmpty())
+ wxGDIPlusRenderer* renderer =
+ static_cast<wxGDIPlusRenderer*>(GetRenderer());
+ return renderer->CreateGDIPlusFont(this, font, col);
+}
+
+void wxGDIPlusContext::DoDrawFilledText(const wxString& str,
+ wxDouble x, wxDouble y,
+ const wxGraphicsBrush& brush)
+{
+ if (m_composition == wxCOMPOSITION_DEST)
+ return;
+
+ wxCHECK_RET( !m_font.IsNull(),
+ wxT("wxGDIPlusContext::DrawText - no valid font set") );
+
+ if ( str.IsEmpty())
return ;
- wxWCharBuffer s = str.wc_str( *wxConvUI );
- m_context->DrawString( s , -1 , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont() ,
- PointF( x , y ) , ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusBrush() );
- // TODO m_backgroundMode == wxSOLID
+ wxGDIPlusFontData * const
+ fontData = (wxGDIPlusFontData *)m_font.GetRefData();
+ wxGDIPlusBrushData * const
+ brushData = (wxGDIPlusBrushData *)brush.GetRefData();
+
+ m_context->DrawString
+ (
+ str.wc_str(*wxConvUI), // string to draw, always Unicode
+ -1, // length: string is NUL-terminated
+ fontData->GetGDIPlusFont(),
+ PointF(x, y),
+ StringFormat::GenericTypographic(),
+ brushData ? brushData->GetGDIPlusBrush()
+ : fontData->GetGDIPlusBrush()
+ );
}
void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
wxDouble *descent, wxDouble *externalLeading ) const
{
+ wxCHECK_RET( !m_font.IsNull(), wxT("wxGDIPlusContext::GetTextExtent - no valid font set") );
+
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 factorY = m_fontScaleRatio;
REAL rDescent = ffamily.GetCellDescent(FontStyleRegular) *
f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
if ( height )
- *height = rHeight * factorY + 0.5 ;
+ *height = rHeight * factorY;
if ( descent )
- *descent = rDescent * factorY + 0.5 ;
+ *descent = rDescent * factorY;
if ( externalLeading )
- *externalLeading = (rHeight - rAscent - rDescent) * factorY + 0.5 ;
+ *externalLeading = (rHeight - rAscent - rDescent) * factorY;
// measuring empty strings is not guaranteed, so do it by hand
- if ( str.IsEmpty())
+ 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 , f,layoutRect, &strFormat,1,®ion) ;
- RectF bbox ;
- region.GetBounds(&bbox,m_context);
+ 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 = bbox.GetRight()-bbox.GetLeft()+0.5;
+ *width = bounds.Width;
+ if ( height )
+ *height = bounds.Height;
}
}
-void wxGDIPlusContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
+void wxGDIPlusContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
{
widths.Empty();
widths.Add(0, text.length());
+ wxCHECK_RET( !m_font.IsNull(), wxT("wxGDIPlusContext::GetPartialTextExtents - no valid font set") );
+
if (text.empty())
return;
wxASSERT_MSG(text.length() == len , wxT("GetPartialTextExtents not yet implemented for multichar situations"));
RectF layoutRect(0,0, 100000.0f, 100000.0f);
- StringFormat strFormat;
+ StringFormat strFormat( StringFormat::GenericTypographic() );
+
+ size_t startPosition = 0;
+ size_t remainder = len;
+ const size_t maxSpan = 32;
+ CharacterRange* ranges = new CharacterRange[maxSpan] ;
+ Region* regions = new Region[maxSpan];
- CharacterRange* ranges = new CharacterRange[len] ;
- Region* regions = new Region[len];
- for( size_t i = 0 ; i < len ; ++i)
+ while( remainder > 0 )
{
- ranges[i].First = i ;
- ranges[i].Length = 1 ;
+ size_t span = wxMin( maxSpan, remainder );
+
+ for( size_t i = 0 ; i < span ; ++i)
+ {
+ ranges[i].First = 0 ;
+ ranges[i].Length = startPosition+i+1 ;
+ }
+ strFormat.SetMeasurableCharacterRanges(span,ranges);
+ strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() );
+ m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,span,regions) ;
+
+ RectF bbox ;
+ for ( size_t i = 0 ; i < span ; ++i)
+ {
+ regions[i].GetBounds(&bbox,m_context);
+ widths[startPosition+i] = bbox.Width;
+ }
+ remainder -= span;
+ startPosition += span;
}
- strFormat.SetMeasurableCharacterRanges(len,ranges);
- m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,1,regions) ;
- RectF bbox ;
- for ( size_t i = 0 ; i < len ; ++i)
+ delete[] ranges;
+ delete[] regions;
+}
+
+bool wxGDIPlusContext::ShouldOffset() const
+{
+ int penwidth = 0 ;
+ if ( !m_pen.IsNull() )
{
- regions[i].GetBounds(&bbox,m_context);
- widths[i] = bbox.GetRight()-bbox.GetLeft();
+ penwidth = (int)((wxGDIPlusPenData*)m_pen.GetRefData())->GetWidth();
+ if ( penwidth == 0 )
+ penwidth = 1;
}
+ return ( penwidth % 2 ) == 1;
}
-void* wxGDIPlusContext::GetNativeContext()
+void* wxGDIPlusContext::GetNativeContext()
{
- return m_context;
+ return m_context;
}
// concatenates this transform with the current transform of this context
m_context->GetTransform((Matrix*) matrix.GetNativeMatrix());
return matrix;
}
-//-----------------------------------------------------------------------------
-// wxGDIPlusRenderer declaration
-//-----------------------------------------------------------------------------
-class WXDLLIMPEXP_CORE wxGDIPlusRenderer : public wxGraphicsRenderer
+void wxGDIPlusContext::GetSize( wxDouble* width, wxDouble *height )
{
-public :
- wxGDIPlusRenderer()
- {
- m_loaded = false;
- m_gditoken = NULL;
- }
-
- virtual ~wxGDIPlusRenderer()
- {
- if (m_loaded)
- {
- Unload();
- }
- }
-
- // Context
-
- virtual wxGraphicsContext * CreateContext( const wxWindowDC& 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 ) ;
+ *width = m_width;
+ *height = m_height;
+}
- // 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) ;
+//-----------------------------------------------------------------------------
+// wxGDIPlusPrintingContext implementation
+//-----------------------------------------------------------------------------
- // 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) ;
+wxGDIPlusPrintingContext::wxGDIPlusPrintingContext( wxGraphicsRenderer* renderer,
+ const wxDC& dc )
+ : wxGDIPlusContext(renderer, dc)
+{
+ Graphics* context = GetGraphics();
- // sets the font
- virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
-protected :
- void EnsureIsLoaded();
- void Load();
- void Unload();
+ //m_context->SetPageUnit(UnitDocument);
-private :
- bool m_loaded;
- DWORD m_gditoken;
+ // Setup page scale, based on DPI ratio.
+ // Antecedent should be 100dpi when the default page unit
+ // (UnitDisplay) is used. Page unit UnitDocument would require 300dpi
+ // instead. Note that calling SetPageScale() does not have effect on
+ // non-printing DCs (that is, any other than wxPrinterDC or
+ // wxEnhMetaFileDC).
+ REAL dpiRatio = 100.0 / context->GetDpiY();
+ context->SetPageScale(dpiRatio);
- DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusRenderer)
-} ;
+ // We use this modifier when measuring fonts. It is needed because the
+ // page scale is modified above.
+ m_fontScaleRatio = context->GetDpiY() / 72.0;
+}
//-----------------------------------------------------------------------------
// wxGDIPlusRenderer implementation
return &gs_GDIPlusRenderer;
}
-void wxGDIPlusRenderer::EnsureIsLoaded()
+bool wxGDIPlusRenderer::EnsureIsLoaded()
{
- if (!m_loaded)
+ // load gdiplus.dll if not yet loaded, but don't bother doing it again
+ // if we already tried and failed (we don't want to spend lot of time
+ // returning NULL from wxGraphicsContext::Create(), which may be called
+ // relatively frequently):
+ if ( m_loaded == -1 )
{
Load();
}
+
+ return m_loaded == 1;
}
+// call EnsureIsLoaded() and return returnOnFail value if it fails
+#define ENSURE_LOADED_OR_RETURN(returnOnFail) \
+ if ( !EnsureIsLoaded() ) \
+ return (returnOnFail)
+
+
void wxGDIPlusRenderer::Load()
{
GdiplusStartupInput input;
GdiplusStartupOutput output;
- GdiplusStartup(&m_gditoken,&input,&output);
- m_loaded = true;
+ if ( GdiplusStartup(&m_gditoken,&input,&output) == Gdiplus::Ok )
+ {
+ wxLogTrace("gdiplus", "successfully initialized GDI+");
+ m_loaded = 1;
+ }
+ else
+ {
+ wxLogTrace("gdiplus", "failed to initialize GDI+, missing gdiplus.dll?");
+ m_loaded = 0;
+ }
}
void wxGDIPlusRenderer::Unload()
{
if ( m_gditoken )
+ {
GdiplusShutdown(m_gditoken);
+ m_gditoken = NULL;
+ }
+ m_loaded = -1; // next Load() will try again
}
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxWindowDC& dc)
{
- EnsureIsLoaded();
- return new wxGDIPlusContext(this,(HDC) dc.GetHDC());
+ ENSURE_LOADED_OR_RETURN(NULL);
+ return new wxGDIPlusContext(this, dc);
+}
+
+#if wxUSE_PRINTING_ARCHITECTURE
+wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxPrinterDC& dc)
+{
+ ENSURE_LOADED_OR_RETURN(NULL);
+ wxGDIPlusContext* context = new wxGDIPlusPrintingContext(this, dc);
+ return context;
+}
+#endif
+
+#if wxUSE_ENH_METAFILE
+wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxEnhMetaFileDC& dc)
+{
+ ENSURE_LOADED_OR_RETURN(NULL);
+ wxGDIPlusContext* context = new wxGDIPlusPrintingContext(this, dc);
+ return context;
+}
+#endif
+
+wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxMemoryDC& dc)
+{
+ ENSURE_LOADED_OR_RETURN(NULL);
+ return new wxGDIPlusContext(this, dc);
}
wxGraphicsContext * wxGDIPlusRenderer::CreateMeasuringContext()
{
- EnsureIsLoaded();
- return NULL;
- // TODO use GetDC(NULL) but then we have to release it from the context
- //return new wxGDIPlusContext(this,(HDC) dc.GetHDC());
+ ENSURE_LOADED_OR_RETURN(NULL);
+ return new wxGDIPlusMeasuringContext(this);
}
wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeContext( void * context )
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(NULL);
return new wxGDIPlusContext(this,(Graphics*) context);
}
wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeWindow( void * window )
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(NULL);
return new wxGDIPlusContext(this,(HWND) window);
}
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( wxWindow* window )
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(NULL);
return new wxGDIPlusContext(this, (HWND) window->GetHWND() );
}
wxGraphicsPath wxGDIPlusRenderer::CreatePath()
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsPath);
wxGraphicsPath m;
m.SetRefData( new wxGDIPlusPathData(this));
return m;
// Matrix
-wxGraphicsMatrix wxGDIPlusRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
+wxGraphicsMatrix wxGDIPlusRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
wxDouble tx, wxDouble ty)
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsMatrix);
wxGraphicsMatrix m;
wxGDIPlusMatrixData* data = new wxGDIPlusMatrixData( this );
data->Set( a,b,c,d,tx,ty ) ;
return m;
}
-wxGraphicsPen wxGDIPlusRenderer::CreatePen(const wxPen& pen)
+wxGraphicsPen wxGDIPlusRenderer::CreatePen(const wxPen& pen)
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsPen);
if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT )
return wxNullGraphicsPen;
else
}
}
-wxGraphicsBrush wxGDIPlusRenderer::CreateBrush(const wxBrush& brush )
+wxGraphicsBrush wxGDIPlusRenderer::CreateBrush(const wxBrush& brush )
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT )
return wxNullGraphicsBrush;
else
}
}
-// 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)
+wxGraphicsBrush
+wxGDIPlusRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+ wxDouble x2, wxDouble y2,
+ const wxGraphicsGradientStops& stops)
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
wxGraphicsBrush p;
wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
- d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
+ d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
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)
+wxGraphicsBrush
+wxGDIPlusRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+ wxDouble xc, wxDouble yc,
+ wxDouble radius,
+ const wxGraphicsGradientStops& stops)
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
wxGraphicsBrush p;
wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
- d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
+ d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,stops);
p.SetRefData(d);
return p;
}
-// sets the font
-wxGraphicsFont wxGDIPlusRenderer::CreateFont( const wxFont &font , const wxColour &col )
+wxGraphicsFont
+wxGDIPlusRenderer::CreateGDIPlusFont( const wxGDIPlusContext* gc,
+ const wxFont &font,
+ const wxColour &col )
{
- EnsureIsLoaded();
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
if ( font.Ok() )
- {
+ {
wxGraphicsFont p;
- p.SetRefData(new wxGDIPlusFontData( this , font, col ));
+ p.SetRefData(new wxGDIPlusFontData( this, gc, font, col ));
return p;
}
else
return wxNullGraphicsFont;
}
+wxGraphicsBitmap wxGDIPlusRenderer::CreateBitmap( const wxBitmap &bitmap )
+{
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
+ if ( bitmap.Ok() )
+ {
+ wxGraphicsBitmap p;
+ p.SetRefData(new wxGDIPlusBitmapData( this , bitmap ));
+ return p;
+ }
+ else
+ return wxNullGraphicsBitmap;
+}
+
+wxGraphicsBitmap wxGDIPlusRenderer::CreateBitmapFromNativeBitmap( void *bitmap )
+{
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
+ if ( bitmap != NULL )
+ {
+ wxGraphicsBitmap p;
+ p.SetRefData(new wxGDIPlusBitmapData( this , (Bitmap*) bitmap ));
+ return p;
+ }
+ else
+ return wxNullGraphicsBitmap;
+}
+
+wxGraphicsBitmap wxGDIPlusRenderer::CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
+ Bitmap* image = static_cast<wxGDIPlusBitmapData*>(bitmap.GetRefData())->GetGDIPlusBitmap();
+ if ( image )
+ {
+ wxGraphicsBitmap p;
+ p.SetRefData(new wxGDIPlusBitmapData( this , image->Clone( (REAL) x , (REAL) y , (REAL) w , (REAL) h , PixelFormat32bppPARGB) ));
+ return p;
+ }
+ else
+ return wxNullGraphicsBitmap;
+}
+
+// Shutdown GDI+ at app exit, before possible dll unload
+class wxGDIPlusRendererModule : public wxModule
+{
+public:
+ virtual bool OnInit() { return true; }
+ virtual void OnExit() { gs_GDIPlusRenderer.Unload(); }
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxGDIPlusRendererModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusRendererModule, wxModule)
+
+// ----------------------------------------------------------------------------
+// wxMSW-specific parts of wxGCDC
+// ----------------------------------------------------------------------------
+
+WXHDC wxGCDC::AcquireHDC()
+{
+ wxGraphicsContext * const gc = GetGraphicsContext();
+ if ( !gc )
+ return NULL;
+
+ Graphics * const g = static_cast<Graphics *>(gc->GetNativeContext());
+ return g ? g->GetHDC() : NULL;
+}
+
+void wxGCDC::ReleaseHDC(WXHDC hdc)
+{
+ if ( !hdc )
+ return;
+
+ wxGraphicsContext * const gc = GetGraphicsContext();
+ wxCHECK_RET( gc, "can't release HDC because there is no wxGraphicsContext" );
+
+ Graphics * const g = static_cast<Graphics *>(gc->GetNativeContext());
+ wxCHECK_RET( g, "can't release HDC because there is no Graphics" );
+
+ g->ReleaseHDC((HDC)hdc);
+}
+
#endif // wxUSE_GRAPHICS_CONTEXT
projects / wxWidgets.git / blobdiff