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/////////////////////////////////////////////////////////////////////////////
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// Name: src/msw/graphics.cpp
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// Purpose: wxGCDC class
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// Author: Stefan Csomor
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// RCS-ID: $Id: graphics.cpp 71822 2012-06-20 17:54:49Z VZ $
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// Copyright: (c) 2006 Stefan Csomor
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#include "wx/wxprec.h"
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#if wxUSE_GRAPHICS_CONTEXT
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#include "wx/msw/wrapcdlg.h"
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#include "wx/window.h"
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#include "wx/dialog.h"
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#include "wx/bitmap.h"
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#include "wx/module.h"
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// include all dc types that are used as a param
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#include "wx/dcclient.h"
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#include "wx/dcmemory.h"
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#include "wx/dcprint.h"
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#include "wx/private/graphics.h"
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#include "wx/msw/wrapgdip.h"
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#include "wx/msw/dc.h"
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#if wxUSE_ENH_METAFILE
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#include "wx/msw/enhmeta.h"
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#include "wx/dcgraph.h"
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#include "wx/msw/private.h" // needs to be before #include <commdlg.h>
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#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__)
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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const double RAD2DEG = 180.0 / M_PI;
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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inline double dmin(double a, double b) { return a < b ? a : b; }
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inline double dmax(double a, double b) { return a > b ? a : b; }
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inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
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inline double RadToDeg(double deg) { return (deg * 180.0) / M_PI; }
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// translate a wxColour to a Color
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inline Color wxColourToColor(const wxColour& col)
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return Color(col.Alpha(), col.Red(), col.Green(), col.Blue());
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} // anonymous namespace
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//-----------------------------------------------------------------------------
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// device context implementation
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// more and more of the dc functionality should be implemented by calling
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// the appropricate wxGDIPlusContext, but we will have to do that step by step
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// also coordinate conversions should be moved to native matrix ops
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//-----------------------------------------------------------------------------
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// we always stock two context states, one at entry, to be able to preserve the
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// state we were called with, the other one after changing to HI Graphics orientation
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// (this one is used for getting back clippings etc)
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//-----------------------------------------------------------------------------
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// wxGraphicsPath implementation
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//-----------------------------------------------------------------------------
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class wxGDIPlusContext;
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class wxGDIPlusPathData : public wxGraphicsPathData
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wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path = NULL);
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~wxGDIPlusPathData();
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virtual wxGraphicsObjectRefData *Clone() const;
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// These are the path primitives from which everything else can be constructed
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// begins a new subpath at (x,y)
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virtual void MoveToPoint( wxDouble x, wxDouble y );
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// adds a straight line from the current point to (x,y)
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virtual void AddLineToPoint( wxDouble x, wxDouble y );
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// adds a cubic Bezier curve from the current point, using two control points and an end point
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virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
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// adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
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virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
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// gets the last point of the current path, (0,0) if not yet set
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virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
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virtual void AddPath( const wxGraphicsPathData* path );
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// closes the current sub-path
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virtual void CloseSubpath();
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// These are convenience functions which - if not available natively will be assembled
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// using the primitives from above
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// appends a rectangle as a new closed subpath
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virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
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// appends an ellipsis as a new closed subpath fitting the passed rectangle
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virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
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// draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
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virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) ;
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// returns the native path
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virtual void * GetNativePath() const { return m_path; }
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// give the native path returned by GetNativePath() back (there might be some deallocations necessary)
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virtual void UnGetNativePath(void * WXUNUSED(path)) const {}
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// transforms each point of this path by the matrix
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virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
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// gets the bounding box enclosing all points (possibly including control points)
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virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
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virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxODDEVEN_RULE) const;
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GraphicsPath* m_path;
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class wxGDIPlusMatrixData : public wxGraphicsMatrixData
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wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix = NULL) ;
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virtual ~wxGDIPlusMatrixData() ;
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virtual wxGraphicsObjectRefData* Clone() const ;
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// concatenates the matrix
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virtual void Concat( const wxGraphicsMatrixData *t );
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// sets the matrix to the respective values
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virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
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wxDouble tx=0.0, wxDouble ty=0.0);
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// gets the component valuess of the matrix
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virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL, wxDouble* c=NULL,
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wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
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// makes this the inverse matrix
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virtual void Invert();
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// returns true if the elements of the transformation matrix are equal ?
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virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
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// return true if this is the identity matrix
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virtual bool IsIdentity() const;
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// add the translation to this matrix
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virtual void Translate( wxDouble dx , wxDouble dy );
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// add the scale to this matrix
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virtual void Scale( wxDouble xScale , wxDouble yScale );
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// add the rotation to this matrix (radians)
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virtual void Rotate( wxDouble angle );
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// apply the transforms
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// applies that matrix to the point
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virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
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// applies the matrix except for translations
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virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
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// returns the native representation
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virtual void * GetNativeMatrix() const;
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class wxGDIPlusPenData : public wxGraphicsObjectRefData
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wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
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virtual wxDouble GetWidth() { return m_width; }
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virtual Pen* GetGDIPlusPen() { return m_pen; }
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class wxGDIPlusBrushData : public wxGraphicsObjectRefData
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wxGDIPlusBrushData( wxGraphicsRenderer* renderer );
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wxGDIPlusBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
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~wxGDIPlusBrushData ();
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void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
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wxDouble x2, wxDouble y2,
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const wxGraphicsGradientStops& stops);
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void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
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wxDouble xc, wxDouble yc,
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const wxGraphicsGradientStops& stops);
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virtual Brush* GetGDIPlusBrush() { return m_brush; }
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// common part of Create{Linear,Radial}GradientBrush()
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template <typename T>
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void SetGradientStops(T *brush, const wxGraphicsGradientStops& stops);
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GraphicsPath* m_brushPath;
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class WXDLLIMPEXP_CORE wxGDIPlusBitmapData : public wxGraphicsBitmapData
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wxGDIPlusBitmapData( wxGraphicsRenderer* renderer, Bitmap* bitmap );
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wxGDIPlusBitmapData( wxGraphicsRenderer* renderer, const wxBitmap &bmp );
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~wxGDIPlusBitmapData ();
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virtual Bitmap* GetGDIPlusBitmap() { return m_bitmap; }
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virtual void* GetNativeBitmap() const { return m_bitmap; }
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wxImage ConvertToImage() const;
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#endif // wxUSE_IMAGE
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class wxGDIPlusFontData : public wxGraphicsObjectRefData
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wxGDIPlusFontData( wxGraphicsRenderer* renderer,
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const wxColour& col );
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wxGDIPlusFontData(wxGraphicsRenderer* renderer,
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const wxString& name,
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const wxColour& col);
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~wxGDIPlusFontData();
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virtual Brush* GetGDIPlusBrush() { return m_textBrush; }
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virtual Font* GetGDIPlusFont() { return m_font; }
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// Common part of all ctors, flags here is a combination of values of
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// FontStyle GDI+ enum.
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void Init(const wxString& name,
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class wxGDIPlusContext : public wxGraphicsContext
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wxGDIPlusContext( wxGraphicsRenderer* renderer, const wxDC& dc );
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wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc, wxDouble width, wxDouble height );
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wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd );
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wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr);
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wxGDIPlusContext(wxGraphicsRenderer* renderer);
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virtual ~wxGDIPlusContext();
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virtual void Clip( const wxRegion ®ion );
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// clips drawings to the rect
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virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
338
// resets the clipping to original extent
339
virtual void ResetClip();
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virtual void * GetNativeContext();
343
virtual void StrokePath( const wxGraphicsPath& p );
344
virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
346
virtual void DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
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// stroke lines connecting each of the points
349
virtual void StrokeLines( size_t n, const wxPoint2DDouble *points);
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virtual void DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
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virtual bool SetAntialiasMode(wxAntialiasMode antialias);
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virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
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virtual bool SetCompositionMode(wxCompositionMode op);
360
virtual void BeginLayer(wxDouble opacity);
362
virtual void EndLayer();
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virtual void Translate( wxDouble dx , wxDouble dy );
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virtual void Scale( wxDouble xScale , wxDouble yScale );
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virtual void Rotate( wxDouble angle );
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// concatenates this transform with the current transform of this context
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virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
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// sets the transform of this context
372
virtual void SetTransform( const wxGraphicsMatrix& matrix );
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// gets the matrix of this context
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virtual wxGraphicsMatrix GetTransform() const;
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virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
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virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
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virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
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virtual void PushState();
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virtual void PopState();
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virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
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wxDouble *descent, wxDouble *externalLeading ) const;
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virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
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virtual bool ShouldOffset() const;
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virtual void GetSize( wxDouble* width, wxDouble *height );
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Graphics* GetGraphics() const { return m_context; }
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wxDouble m_fontScaleRatio;
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// Used from ctors (including those in the derived classes) and takes
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// ownership of the graphics pointer that must be non-NULL.
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void Init(Graphics* graphics, int width, int height);
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virtual void DoDrawText(const wxString& str, wxDouble x, wxDouble y);
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wxStack<GraphicsState> m_stateStack;
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GraphicsState m_state1;
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GraphicsState m_state2;
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wxDECLARE_NO_COPY_CLASS(wxGDIPlusContext);
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class wxGDIPlusImageContext : public wxGDIPlusContext
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wxGDIPlusImageContext(wxGraphicsRenderer* renderer, wxImage& image) :
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wxGDIPlusContext(renderer),
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m_bitmap(renderer, image)
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new Graphics(m_bitmap.GetGDIPlusBitmap()),
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virtual ~wxGDIPlusImageContext()
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m_image = m_bitmap.ConvertToImage();
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wxGDIPlusBitmapData m_bitmap;
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wxDECLARE_NO_COPY_CLASS(wxGDIPlusImageContext);
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#endif // wxUSE_IMAGE
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class wxGDIPlusMeasuringContext : public wxGDIPlusContext
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wxGDIPlusMeasuringContext( wxGraphicsRenderer* renderer ) : wxGDIPlusContext( renderer , m_hdc = GetDC(NULL), 1000, 1000 )
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virtual ~wxGDIPlusMeasuringContext()
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ReleaseDC( NULL, m_hdc );
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class wxGDIPlusPrintingContext : public wxGDIPlusContext
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wxGDIPlusPrintingContext( wxGraphicsRenderer* renderer, const wxDC& dc );
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virtual ~wxGDIPlusPrintingContext() { }
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//-----------------------------------------------------------------------------
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// wxGDIPlusRenderer declaration
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//-----------------------------------------------------------------------------
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class wxGDIPlusRenderer : public wxGraphicsRenderer
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virtual ~wxGDIPlusRenderer()
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virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
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virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
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#if wxUSE_PRINTING_ARCHITECTURE
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virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
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#if wxUSE_ENH_METAFILE
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virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
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virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
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virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
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virtual wxGraphicsContext * CreateContext( wxWindow* window );
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virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
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#endif // wxUSE_IMAGE
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virtual wxGraphicsContext * CreateMeasuringContext();
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virtual wxGraphicsPath CreatePath();
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virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
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wxDouble tx=0.0, wxDouble ty=0.0);
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virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
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virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
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virtual wxGraphicsBrush
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CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
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wxDouble x2, wxDouble y2,
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const wxGraphicsGradientStops& stops);
532
virtual wxGraphicsBrush
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CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
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wxDouble xc, wxDouble yc,
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const wxGraphicsGradientStops& stops);
538
// create a native bitmap representation
539
virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
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virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
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virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp);
543
#endif // wxUSE_IMAGE
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virtual wxGraphicsFont CreateFont( const wxFont& font,
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const wxColour& col);
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virtual wxGraphicsFont CreateFont(double size,
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const wxString& facename,
550
int flags = wxFONTFLAG_DEFAULT,
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const wxColour& col = *wxBLACK);
553
// create a graphics bitmap from a native bitmap
554
virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
556
// create a subimage from a native image representation
557
virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
560
bool EnsureIsLoaded();
563
friend class wxGDIPlusRendererModule;
567
ULONG_PTR m_gditoken;
569
DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusRenderer)
572
//-----------------------------------------------------------------------------
573
// wxGDIPlusPen implementation
574
//-----------------------------------------------------------------------------
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wxGDIPlusPenData::~wxGDIPlusPenData()
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void wxGDIPlusPenData::Init()
590
wxGDIPlusPenData::wxGDIPlusPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
591
: wxGraphicsObjectRefData(renderer)
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m_width = pen.GetWidth();
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m_pen = new Pen(wxColourToColor(pen.GetColour()), m_width );
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switch ( pen.GetCap() )
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case wxCAP_PROJECTING :
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cap = LineCapFlat; // TODO verify
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m_pen->SetLineCap(cap,cap, DashCapFlat);
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switch ( pen.GetJoin() )
625
join = LineJoinBevel;
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join = LineJoinMiter;
633
join = LineJoinRound;
637
join = LineJoinMiter;
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m_pen->SetLineJoin(join);
643
m_pen->SetDashStyle(DashStyleSolid);
645
DashStyle dashStyle = DashStyleSolid;
646
switch ( pen.GetStyle() )
648
case wxPENSTYLE_SOLID :
651
case wxPENSTYLE_DOT :
652
dashStyle = DashStyleDot;
655
case wxPENSTYLE_LONG_DASH :
656
dashStyle = DashStyleDash; // TODO verify
659
case wxPENSTYLE_SHORT_DASH :
660
dashStyle = DashStyleDash;
663
case wxPENSTYLE_DOT_DASH :
664
dashStyle = DashStyleDashDot;
666
case wxPENSTYLE_USER_DASH :
668
dashStyle = DashStyleCustom;
670
int count = pen.GetDashes( &dashes );
671
if ((dashes != NULL) && (count > 0))
673
REAL *userLengths = new REAL[count];
674
for ( int i = 0; i < count; ++i )
676
userLengths[i] = dashes[i];
678
m_pen->SetDashPattern( userLengths, count);
679
delete[] userLengths;
683
case wxPENSTYLE_STIPPLE :
685
wxBitmap* bmp = pen.GetStipple();
686
if ( bmp && bmp->IsOk() )
688
m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),
690
(HPALETTE)bmp->GetPalette()->GetHPALETTE()
695
m_penBrush = new TextureBrush(m_penImage);
696
m_pen->SetBrush( m_penBrush );
702
if ( pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH &&
703
pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
706
switch( pen.GetStyle() )
708
case wxPENSTYLE_BDIAGONAL_HATCH :
709
style = HatchStyleBackwardDiagonal;
711
case wxPENSTYLE_CROSSDIAG_HATCH :
712
style = HatchStyleDiagonalCross;
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case wxPENSTYLE_FDIAGONAL_HATCH :
715
style = HatchStyleForwardDiagonal;
717
case wxPENSTYLE_CROSS_HATCH :
718
style = HatchStyleCross;
720
case wxPENSTYLE_HORIZONTAL_HATCH :
721
style = HatchStyleHorizontal;
723
case wxPENSTYLE_VERTICAL_HATCH :
724
style = HatchStyleVertical;
727
style = HatchStyleHorizontal;
729
m_penBrush = new HatchBrush
732
wxColourToColor(pen.GetColour()),
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m_pen->SetBrush( m_penBrush );
739
if ( dashStyle != DashStyleSolid )
740
m_pen->SetDashStyle(dashStyle);
743
//-----------------------------------------------------------------------------
744
// wxGDIPlusBrush implementation
745
//-----------------------------------------------------------------------------
747
wxGDIPlusBrushData::wxGDIPlusBrushData( wxGraphicsRenderer* renderer )
748
: wxGraphicsObjectRefData(renderer)
753
wxGDIPlusBrushData::wxGDIPlusBrushData( wxGraphicsRenderer* renderer , const wxBrush &brush )
754
: wxGraphicsObjectRefData(renderer)
757
if ( brush.GetStyle() == wxSOLID)
759
m_brush = new SolidBrush(wxColourToColor( brush.GetColour()));
761
else if ( brush.IsHatch() )
764
switch( brush.GetStyle() )
766
case wxBRUSHSTYLE_BDIAGONAL_HATCH :
767
style = HatchStyleBackwardDiagonal;
769
case wxBRUSHSTYLE_CROSSDIAG_HATCH :
770
style = HatchStyleDiagonalCross;
772
case wxBRUSHSTYLE_FDIAGONAL_HATCH :
773
style = HatchStyleForwardDiagonal;
775
case wxBRUSHSTYLE_CROSS_HATCH :
776
style = HatchStyleCross;
778
case wxBRUSHSTYLE_HORIZONTAL_HATCH :
779
style = HatchStyleHorizontal;
781
case wxBRUSHSTYLE_VERTICAL_HATCH :
782
style = HatchStyleVertical;
785
style = HatchStyleHorizontal;
787
m_brush = new HatchBrush
790
wxColourToColor(brush.GetColour()),
796
wxBitmap* bmp = brush.GetStipple();
797
if ( bmp && bmp->IsOk() )
799
wxDELETE( m_brushImage );
800
m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),
802
(HPALETTE)bmp->GetPalette()->GetHPALETTE()
807
m_brush = new TextureBrush(m_brushImage);
812
wxGDIPlusBrushData::~wxGDIPlusBrushData()
819
void wxGDIPlusBrushData::Init()
826
template <typename T>
828
wxGDIPlusBrushData::SetGradientStops(T *brush,
829
const wxGraphicsGradientStops& stops)
831
const unsigned numStops = stops.GetCount();
834
// initial and final colours are set during the brush creation, nothing
839
wxVector<Color> colors(numStops);
840
wxVector<REAL> positions(numStops);
842
for ( unsigned i = 0; i < numStops; i++ )
844
wxGraphicsGradientStop stop = stops.Item(i);
846
colors[i] = wxColourToColor(stop.GetColour());
847
positions[i] = stop.GetPosition();
850
brush->SetInterpolationColors(&colors[0], &positions[0], numStops);
854
wxGDIPlusBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
855
wxDouble x2, wxDouble y2,
856
const wxGraphicsGradientStops& stops)
858
LinearGradientBrush * const
859
brush = new LinearGradientBrush(PointF(x1, y1) , PointF(x2, y2),
860
wxColourToColor(stops.GetStartColour()),
861
wxColourToColor(stops.GetEndColour()));
864
SetGradientStops(brush, stops);
868
wxGDIPlusBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
869
wxDouble xc, wxDouble yc,
871
const wxGraphicsGradientStops& stops)
873
m_brushPath = new GraphicsPath();
874
m_brushPath->AddEllipse( (REAL)(xc-radius), (REAL)(yc-radius),
875
(REAL)(2*radius), (REAL)(2*radius));
877
PathGradientBrush * const brush = new PathGradientBrush(m_brushPath);
879
brush->SetCenterPoint(PointF(xo, yo));
880
brush->SetCenterColor(wxColourToColor(stops.GetStartColour()));
882
const Color col(wxColourToColor(stops.GetEndColour()));
884
brush->SetSurroundColors(&col, &count);
886
SetGradientStops(brush, stops);
889
//-----------------------------------------------------------------------------
890
// wxGDIPlusFont implementation
891
//-----------------------------------------------------------------------------
894
wxGDIPlusFontData::Init(const wxString& name,
900
m_font = new Font(name.wc_str(), size, style, fontUnit);
902
m_textBrush = new SolidBrush(wxColourToColor(col));
905
wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer,
907
const wxColour& col )
908
: wxGraphicsObjectRefData( renderer )
910
int style = FontStyleRegular;
911
if ( font.GetStyle() == wxFONTSTYLE_ITALIC )
912
style |= FontStyleItalic;
913
if ( font.GetUnderlined() )
914
style |= FontStyleUnderline;
915
if ( font.GetWeight() == wxFONTWEIGHT_BOLD )
916
style |= FontStyleBold;
918
Init(font.GetFaceName(), font.GetPointSize(), style, col, UnitPoint);
921
wxGDIPlusFontData::wxGDIPlusFontData(wxGraphicsRenderer* renderer,
922
const wxString& name,
925
const wxColour& col) :
926
wxGraphicsObjectRefData(renderer)
928
Init(name, sizeInPixels, style, col, UnitPixel);
931
wxGDIPlusFontData::~wxGDIPlusFontData()
937
// the built-in conversions functions create non-premultiplied bitmaps, while GDIPlus needs them in the
938
// premultiplied format, therefore in the failing cases we create a new bitmap using the non-premultiplied
939
// bytes as parameter, since there is no real copying of the data going in, only references are stored
940
// m_helper has to be kept alive as well
942
//-----------------------------------------------------------------------------
943
// wxGDIPlusBitmapData implementation
944
//-----------------------------------------------------------------------------
946
wxGDIPlusBitmapData::wxGDIPlusBitmapData( wxGraphicsRenderer* renderer, Bitmap* bitmap ) :
947
wxGraphicsBitmapData( renderer ), m_bitmap( bitmap )
952
wxGDIPlusBitmapData::wxGDIPlusBitmapData( wxGraphicsRenderer* renderer,
953
const wxBitmap &bmp) : wxGraphicsBitmapData( renderer )
958
Bitmap* image = NULL;
961
Bitmap interim((HBITMAP)bmp.GetHBITMAP(),
963
(HPALETTE)bmp.GetPalette()->GetHPALETTE()
969
size_t width = interim.GetWidth();
970
size_t height = interim.GetHeight();
971
Rect bounds(0,0,width,height);
973
image = new Bitmap(width,height,PixelFormat32bppPARGB) ;
975
Bitmap interimMask((HBITMAP)bmp.GetMask()->GetMaskBitmap(),NULL);
976
wxASSERT(interimMask.GetPixelFormat() == PixelFormat1bppIndexed);
978
BitmapData dataMask ;
979
interimMask.LockBits(&bounds,ImageLockModeRead,
980
interimMask.GetPixelFormat(),&dataMask);
983
BitmapData imageData ;
984
image->LockBits(&bounds,ImageLockModeWrite, PixelFormat32bppPARGB, &imageData);
986
BYTE maskPattern = 0 ;
990
for ( size_t y = 0 ; y < height ; ++y)
993
for( size_t x = 0 ; x < width; ++x)
998
maskByte = *((BYTE*)dataMask.Scan0 + dataMask.Stride*y + maskIndex);
1002
maskPattern = maskPattern >> 1;
1004
ARGB *dest = (ARGB*)((BYTE*)imageData.Scan0 + imageData.Stride*y + x*4);
1005
if ( (maskByte & maskPattern) == 0 )
1010
interim.GetPixel(x,y,&c) ;
1011
*dest = (c.GetValue() | Color::AlphaMask);
1016
image->UnlockBits(&imageData);
1018
interimMask.UnlockBits(&dataMask);
1019
interim.UnlockBits(&dataMask);
1023
image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),
1025
(HPALETTE)bmp.GetPalette()->GetHPALETTE()
1030
if ( bmp.HasAlpha() && GetPixelFormatSize(image->GetPixelFormat()) == 32 )
1032
size_t width = image->GetWidth();
1033
size_t height = image->GetHeight();
1034
Rect bounds(0,0,width,height);
1035
static BitmapData data ;
1039
m_helper->LockBits(&bounds, ImageLockModeRead,
1040
m_helper->GetPixelFormat(),&data);
1042
image = new Bitmap(data.Width, data.Height, data.Stride,
1043
PixelFormat32bppPARGB , (BYTE*) data.Scan0);
1045
m_helper->UnlockBits(&data);
1054
wxImage wxGDIPlusBitmapData::ConvertToImage() const
1056
// We could use Bitmap::LockBits() and convert to wxImage directly but
1057
// passing by wxBitmap is easier. It would be nice to measure performance
1058
// of the two methods but for this the second one would need to be written
1061
if ( m_bitmap->GetHBITMAP(Color(0xffffffff), &hbmp) != Gdiplus::Ok )
1065
bmp.SetWidth(m_bitmap->GetWidth());
1066
bmp.SetHeight(m_bitmap->GetHeight());
1067
bmp.SetHBITMAP(hbmp);
1068
bmp.SetDepth(IsAlphaPixelFormat(m_bitmap->GetPixelFormat()) ? 32 : 24);
1069
return bmp.ConvertToImage();
1072
#endif // wxUSE_IMAGE
1074
wxGDIPlusBitmapData::~wxGDIPlusBitmapData()
1080
//-----------------------------------------------------------------------------
1081
// wxGDIPlusPath implementation
1082
//-----------------------------------------------------------------------------
1084
wxGDIPlusPathData::wxGDIPlusPathData(wxGraphicsRenderer* renderer, GraphicsPath* path ) : wxGraphicsPathData(renderer)
1089
m_path = new GraphicsPath();
1092
wxGDIPlusPathData::~wxGDIPlusPathData()
1097
wxGraphicsObjectRefData* wxGDIPlusPathData::Clone() const
1099
return new wxGDIPlusPathData( GetRenderer() , m_path->Clone());
1106
void wxGDIPlusPathData::MoveToPoint( wxDouble x , wxDouble y )
1108
m_path->StartFigure();
1109
m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
1112
void wxGDIPlusPathData::AddLineToPoint( wxDouble x , wxDouble y )
1114
m_path->AddLine((REAL) x,(REAL) y,(REAL) x,(REAL) y);
1117
void wxGDIPlusPathData::CloseSubpath()
1119
m_path->CloseFigure();
1122
void wxGDIPlusPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
1128
m_path->GetLastPoint(&start);
1129
m_path->AddBezier(start,c1,c2,end);
1132
// gets the last point of the current path, (0,0) if not yet set
1133
void wxGDIPlusPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
1136
m_path->GetLastPoint(&start);
1141
void wxGDIPlusPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
1143
double sweepAngle = endAngle - startAngle ;
1144
if( fabs(sweepAngle) >= 2*M_PI)
1146
sweepAngle = 2 * M_PI;
1152
if( sweepAngle < 0 )
1153
sweepAngle += 2 * M_PI;
1157
if( sweepAngle > 0 )
1158
sweepAngle -= 2 * M_PI;
1162
m_path->AddArc((REAL) (x-r),(REAL) (y-r),(REAL) (2*r),(REAL) (2*r),RadToDeg(startAngle),RadToDeg(sweepAngle));
1165
void wxGDIPlusPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1167
m_path->AddRectangle(RectF(x,y,w,h));
1170
void wxGDIPlusPathData::AddPath( const wxGraphicsPathData* path )
1172
m_path->AddPath( (GraphicsPath*) path->GetNativePath(), FALSE);
1176
// transforms each point of this path by the matrix
1177
void wxGDIPlusPathData::Transform( const wxGraphicsMatrixData* matrix )
1179
m_path->Transform( (Matrix*) matrix->GetNativeMatrix() );
1182
// gets the bounding box enclosing all points (possibly including control points)
1183
void wxGDIPlusPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
1186
m_path->GetBounds( &bounds, NULL, NULL) ;
1193
bool wxGDIPlusPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
1195
m_path->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
1196
return m_path->IsVisible( (FLOAT) x,(FLOAT) y) == TRUE ;
1199
//-----------------------------------------------------------------------------
1200
// wxGDIPlusMatrixData implementation
1201
//-----------------------------------------------------------------------------
1203
wxGDIPlusMatrixData::wxGDIPlusMatrixData(wxGraphicsRenderer* renderer, Matrix* matrix )
1204
: wxGraphicsMatrixData(renderer)
1209
m_matrix = new Matrix();
1212
wxGDIPlusMatrixData::~wxGDIPlusMatrixData()
1217
wxGraphicsObjectRefData *wxGDIPlusMatrixData::Clone() const
1219
return new wxGDIPlusMatrixData( GetRenderer(), m_matrix->Clone());
1222
// concatenates the matrix
1223
void wxGDIPlusMatrixData::Concat( const wxGraphicsMatrixData *t )
1225
m_matrix->Multiply( (Matrix*) t->GetNativeMatrix());
1228
// sets the matrix to the respective values
1229
void wxGDIPlusMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
1230
wxDouble tx, wxDouble ty)
1232
m_matrix->SetElements(a,b,c,d,tx,ty);
1235
// gets the component valuess of the matrix
1236
void wxGDIPlusMatrixData::Get(wxDouble* a, wxDouble* b, wxDouble* c,
1237
wxDouble* d, wxDouble* tx, wxDouble* ty) const
1240
m_matrix->GetElements(elements);
1241
if (a) *a = elements[0];
1242
if (b) *b = elements[1];
1243
if (c) *c = elements[2];
1244
if (d) *d = elements[3];
1245
if (tx) *tx= elements[4];
1246
if (ty) *ty= elements[5];
1249
// makes this the inverse matrix
1250
void wxGDIPlusMatrixData::Invert()
1255
// returns true if the elements of the transformation matrix are equal ?
1256
bool wxGDIPlusMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
1258
return m_matrix->Equals((Matrix*) t->GetNativeMatrix())== TRUE ;
1261
// return true if this is the identity matrix
1262
bool wxGDIPlusMatrixData::IsIdentity() const
1264
return m_matrix->IsIdentity() == TRUE ;
1271
// add the translation to this matrix
1272
void wxGDIPlusMatrixData::Translate( wxDouble dx , wxDouble dy )
1274
m_matrix->Translate(dx,dy);
1277
// add the scale to this matrix
1278
void wxGDIPlusMatrixData::Scale( wxDouble xScale , wxDouble yScale )
1280
m_matrix->Scale(xScale,yScale);
1283
// add the rotation to this matrix (radians)
1284
void wxGDIPlusMatrixData::Rotate( wxDouble angle )
1286
m_matrix->Rotate( RadToDeg(angle) );
1290
// apply the transforms
1293
// applies that matrix to the point
1294
void wxGDIPlusMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
1297
m_matrix->TransformPoints(&pt);
1302
// applies the matrix except for translations
1303
void wxGDIPlusMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
1306
m_matrix->TransformVectors(&pt);
1311
// returns the native representation
1312
void * wxGDIPlusMatrixData::GetNativeMatrix() const
1317
//-----------------------------------------------------------------------------
1318
// wxGDIPlusContext implementation
1319
//-----------------------------------------------------------------------------
1321
class wxGDIPlusOffsetHelper
1324
wxGDIPlusOffsetHelper( Graphics* gr , bool offset )
1329
m_gr->TranslateTransform( 0.5, 0.5 );
1331
~wxGDIPlusOffsetHelper( )
1334
m_gr->TranslateTransform( -0.5, -0.5 );
1341
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc, wxDouble width, wxDouble height )
1342
: wxGraphicsContext(renderer)
1344
Init(new Graphics(hdc), width, height);
1347
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, const wxDC& dc )
1348
: wxGraphicsContext(renderer)
1350
wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
1351
HDC hdc = (HDC) msw->GetHDC();
1352
wxSize sz = dc.GetSize();
1354
Init(new Graphics(hdc), sz.x, sz.y);
1357
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd )
1358
: wxGraphicsContext(renderer)
1360
RECT rect = wxGetWindowRect(hwnd);
1361
Init(new Graphics(hwnd), rect.right - rect.left, rect.bottom - rect.top);
1362
m_enableOffset = true;
1365
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr )
1366
: wxGraphicsContext(renderer)
1371
wxGDIPlusContext::wxGDIPlusContext(wxGraphicsRenderer* renderer)
1372
: wxGraphicsContext(renderer)
1374
// Derived class must call Init() later but just set m_context to NULL for
1375
// safety to avoid crashing in our dtor if Init() ends up not being called.
1379
void wxGDIPlusContext::Init(Graphics* graphics, int width, int height)
1381
m_context = graphics;
1386
m_fontScaleRatio = 1.0;
1388
m_context->SetTextRenderingHint(TextRenderingHintSystemDefault);
1389
m_context->SetPixelOffsetMode(PixelOffsetModeHalf);
1390
m_context->SetSmoothingMode(SmoothingModeHighQuality);
1391
m_context->SetInterpolationMode(InterpolationModeHighQuality);
1392
m_state1 = m_context->Save();
1393
m_state2 = m_context->Save();
1396
wxGDIPlusContext::~wxGDIPlusContext()
1400
m_context->Restore( m_state2 );
1401
m_context->Restore( m_state1 );
1407
void wxGDIPlusContext::Clip( const wxRegion ®ion )
1409
Region rgn((HRGN)region.GetHRGN());
1410
m_context->SetClip(&rgn,CombineModeIntersect);
1413
void wxGDIPlusContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1415
m_context->SetClip(RectF(x,y,w,h),CombineModeIntersect);
1418
void wxGDIPlusContext::ResetClip()
1420
m_context->ResetClip();
1423
void wxGDIPlusContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1425
if (m_composition == wxCOMPOSITION_DEST)
1428
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
1429
Brush *brush = m_brush.IsNull() ? NULL : ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush();
1430
Pen *pen = m_pen.IsNull() ? NULL : ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen();
1434
// the offset is used to fill only the inside of the rectangle and not paint underneath
1435
// its border which may influence a transparent Pen
1438
offset = pen->GetWidth();
1439
m_context->FillRectangle( brush, (REAL)x + offset/2, (REAL)y + offset/2, (REAL)w - offset, (REAL)h - offset);
1444
m_context->DrawRectangle( pen, (REAL)x, (REAL)y, (REAL)w, (REAL)h );
1448
void wxGDIPlusContext::StrokeLines( size_t n, const wxPoint2DDouble *points)
1450
if (m_composition == wxCOMPOSITION_DEST)
1453
if ( !m_pen.IsNull() )
1455
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
1456
Point *cpoints = new Point[n];
1457
for (size_t i = 0; i < n; i++)
1459
cpoints[i].X = (int)(points[i].m_x );
1460
cpoints[i].Y = (int)(points[i].m_y );
1462
} // for (size_t i = 0; i < n; i++)
1463
m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ;
1468
void wxGDIPlusContext::DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode WXUNUSED(fillStyle) )
1470
if (m_composition == wxCOMPOSITION_DEST)
1473
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
1474
Point *cpoints = new Point[n];
1475
for (size_t i = 0; i < n; i++)
1477
cpoints[i].X = (int)(points[i].m_x );
1478
cpoints[i].Y = (int)(points[i].m_y );
1480
} // for (int i = 0; i < n; i++)
1481
if ( !m_brush.IsNull() )
1482
m_context->FillPolygon( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() , cpoints , n ) ;
1483
if ( !m_pen.IsNull() )
1484
m_context->DrawLines( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , cpoints , n ) ;
1488
void wxGDIPlusContext::StrokePath( const wxGraphicsPath& path )
1490
if (m_composition == wxCOMPOSITION_DEST)
1493
if ( !m_pen.IsNull() )
1495
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
1496
m_context->DrawPath( ((wxGDIPlusPenData*)m_pen.GetGraphicsData())->GetGDIPlusPen() , (GraphicsPath*) path.GetNativePath() );
1500
void wxGDIPlusContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
1502
if (m_composition == wxCOMPOSITION_DEST)
1505
if ( !m_brush.IsNull() )
1507
wxGDIPlusOffsetHelper helper( m_context , ShouldOffset() );
1508
((GraphicsPath*) path.GetNativePath())->SetFillMode( fillStyle == wxODDEVEN_RULE ? FillModeAlternate : FillModeWinding);
1509
m_context->FillPath( ((wxGDIPlusBrushData*)m_brush.GetRefData())->GetGDIPlusBrush() ,
1510
(GraphicsPath*) path.GetNativePath());
1514
bool wxGDIPlusContext::SetAntialiasMode(wxAntialiasMode antialias)
1516
if (m_antialias == antialias)
1519
m_antialias = antialias;
1521
SmoothingMode antialiasMode;
1524
case wxANTIALIAS_DEFAULT:
1525
antialiasMode = SmoothingModeHighQuality;
1527
case wxANTIALIAS_NONE:
1528
antialiasMode = SmoothingModeNone;
1533
m_context->SetSmoothingMode(antialiasMode);
1537
bool wxGDIPlusContext::SetInterpolationQuality(wxInterpolationQuality interpolation)
1539
if (m_interpolation == interpolation)
1542
InterpolationMode interpolationMode = InterpolationModeDefault;
1543
switch (interpolation)
1545
case wxINTERPOLATION_DEFAULT:
1546
interpolationMode = InterpolationModeDefault;
1549
case wxINTERPOLATION_NONE:
1550
interpolationMode = InterpolationModeNearestNeighbor;
1553
case wxINTERPOLATION_FAST:
1554
interpolationMode = InterpolationModeLowQuality;
1557
case wxINTERPOLATION_GOOD:
1558
interpolationMode = InterpolationModeHighQuality;
1561
case wxINTERPOLATION_BEST:
1562
interpolationMode = InterpolationModeHighQualityBicubic;
1569
if ( m_context->SetInterpolationMode(interpolationMode) != Gdiplus::Ok )
1572
m_interpolation = interpolation;
1577
bool wxGDIPlusContext::SetCompositionMode(wxCompositionMode op)
1579
if ( m_composition == op )
1584
if (m_composition == wxCOMPOSITION_DEST)
1587
CompositingMode cop;
1590
case wxCOMPOSITION_SOURCE:
1591
cop = CompositingModeSourceCopy;
1593
case wxCOMPOSITION_OVER:
1594
cop = CompositingModeSourceOver;
1600
m_context->SetCompositingMode(cop);
1604
void wxGDIPlusContext::BeginLayer(wxDouble /* opacity */)
1609
void wxGDIPlusContext::EndLayer()
1614
void wxGDIPlusContext::Rotate( wxDouble angle )
1616
m_context->RotateTransform( RadToDeg(angle) );
1619
void wxGDIPlusContext::Translate( wxDouble dx , wxDouble dy )
1621
m_context->TranslateTransform( dx , dy );
1624
void wxGDIPlusContext::Scale( wxDouble xScale , wxDouble yScale )
1626
m_context->ScaleTransform(xScale,yScale);
1629
void wxGDIPlusContext::PushState()
1631
GraphicsState state = m_context->Save();
1632
m_stateStack.push(state);
1635
void wxGDIPlusContext::PopState()
1637
wxCHECK_RET( !m_stateStack.empty(), wxT("No state to pop") );
1639
GraphicsState state = m_stateStack.top();
1641
m_context->Restore(state);
1644
void wxGDIPlusContext::DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1646
if (m_composition == wxCOMPOSITION_DEST)
1649
Bitmap* image = static_cast<wxGDIPlusBitmapData*>(bmp.GetRefData())->GetGDIPlusBitmap();
1652
if( image->GetWidth() != (UINT) w || image->GetHeight() != (UINT) h )
1654
Rect drawRect((REAL) x, (REAL)y, (REAL)w, (REAL)h);
1655
m_context->SetPixelOffsetMode( PixelOffsetModeNone );
1656
m_context->DrawImage(image, drawRect, 0 , 0 , image->GetWidth(), image->GetHeight(), UnitPixel ) ;
1657
m_context->SetPixelOffsetMode( PixelOffsetModeHalf );
1660
m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1664
void wxGDIPlusContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1666
wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
1667
DrawBitmap(bitmap, x, y, w, h);
1670
void wxGDIPlusContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
1672
if (m_composition == wxCOMPOSITION_DEST)
1675
// the built-in conversion fails when there is alpha in the HICON (eg XP style icons), we can only
1676
// find out by looking at the bitmap data whether there really was alpha in it
1677
HICON hIcon = (HICON)icon.GetHICON();
1679
// IconInfo creates the bitmaps for color and mask, we must dispose of them after use
1680
if (!GetIconInfo(hIcon,&iconInfo))
1683
Bitmap interim(iconInfo.hbmColor,NULL);
1685
Bitmap* image = NULL ;
1687
// if it's not 32 bit, it doesn't have an alpha channel, note that since the conversion doesn't
1688
// work correctly, asking IsAlphaPixelFormat at this point fails as well
1689
if( GetPixelFormatSize(interim.GetPixelFormat())!= 32 )
1691
image = Bitmap::FromHICON(hIcon);
1695
size_t width = interim.GetWidth();
1696
size_t height = interim.GetHeight();
1697
Rect bounds(0,0,width,height);
1700
interim.LockBits(&bounds, ImageLockModeRead,
1701
interim.GetPixelFormat(),&data);
1703
bool hasAlpha = false;
1704
for ( size_t y = 0 ; y < height && !hasAlpha ; ++y)
1706
for( size_t x = 0 ; x < width && !hasAlpha; ++x)
1708
ARGB *dest = (ARGB*)((BYTE*)data.Scan0 + data.Stride*y + x*4);
1709
if ( ( *dest & Color::AlphaMask ) != 0 )
1716
image = new Bitmap(data.Width, data.Height, data.Stride,
1717
PixelFormat32bppARGB , (BYTE*) data.Scan0);
1721
image = Bitmap::FromHICON(hIcon);
1724
interim.UnlockBits(&data);
1727
m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
1730
DeleteObject(iconInfo.hbmColor);
1731
DeleteObject(iconInfo.hbmMask);
1734
void wxGDIPlusContext::DoDrawText(const wxString& str,
1735
wxDouble x, wxDouble y )
1737
if (m_composition == wxCOMPOSITION_DEST)
1740
wxCHECK_RET( !m_font.IsNull(),
1741
wxT("wxGDIPlusContext::DrawText - no valid font set") );
1746
wxGDIPlusFontData * const
1747
fontData = (wxGDIPlusFontData *)m_font.GetRefData();
1749
m_context->DrawString
1751
str.wc_str(*wxConvUI), // string to draw, always Unicode
1752
-1, // length: string is NUL-terminated
1753
fontData->GetGDIPlusFont(),
1755
StringFormat::GenericTypographic(),
1756
fontData->GetGDIPlusBrush()
1760
void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
1761
wxDouble *descent, wxDouble *externalLeading ) const
1763
wxCHECK_RET( !m_font.IsNull(), wxT("wxGDIPlusContext::GetTextExtent - no valid font set") );
1765
wxWCharBuffer s = str.wc_str( *wxConvUI );
1766
FontFamily ffamily ;
1767
Font* f = ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont();
1769
f->GetFamily(&ffamily) ;
1771
REAL factorY = m_fontScaleRatio;
1773
// Notice that we must use the real font style or the results would be
1774
// incorrect for italic/bold fonts.
1775
const INT style = f->GetStyle();
1776
const REAL size = f->GetSize();
1777
const REAL emHeight = ffamily.GetEmHeight(style);
1778
REAL rDescent = ffamily.GetCellDescent(style) * size / emHeight;
1779
REAL rAscent = ffamily.GetCellAscent(style) * size / emHeight;
1780
REAL rHeight = ffamily.GetLineSpacing(style) * size / emHeight;
1783
*height = rHeight * factorY;
1785
*descent = rDescent * factorY;
1786
if ( externalLeading )
1787
*externalLeading = (rHeight - rAscent - rDescent) * factorY;
1788
// measuring empty strings is not guaranteed, so do it by hand
1796
RectF layoutRect(0,0, 100000.0f, 100000.0f);
1797
StringFormat strFormat( StringFormat::GenericTypographic() );
1798
strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() );
1801
m_context->MeasureString((const wchar_t *) s , wcslen(s) , f, layoutRect, &strFormat, &bounds ) ;
1803
*width = bounds.Width;
1805
*height = bounds.Height;
1809
void wxGDIPlusContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
1812
widths.Add(0, text.length());
1814
wxCHECK_RET( !m_font.IsNull(), wxT("wxGDIPlusContext::GetPartialTextExtents - no valid font set") );
1819
Font* f = ((wxGDIPlusFontData*)m_font.GetRefData())->GetGDIPlusFont();
1820
wxWCharBuffer ws = text.wc_str( *wxConvUI );
1821
size_t len = wcslen( ws ) ;
1822
wxASSERT_MSG(text.length() == len , wxT("GetPartialTextExtents not yet implemented for multichar situations"));
1824
RectF layoutRect(0,0, 100000.0f, 100000.0f);
1825
StringFormat strFormat( StringFormat::GenericTypographic() );
1827
size_t startPosition = 0;
1828
size_t remainder = len;
1829
const size_t maxSpan = 32;
1830
CharacterRange* ranges = new CharacterRange[maxSpan] ;
1831
Region* regions = new Region[maxSpan];
1833
while( remainder > 0 )
1835
size_t span = wxMin( maxSpan, remainder );
1837
for( size_t i = 0 ; i < span ; ++i)
1839
ranges[i].First = 0 ;
1840
ranges[i].Length = startPosition+i+1 ;
1842
strFormat.SetMeasurableCharacterRanges(span,ranges);
1843
strFormat.SetFormatFlags( StringFormatFlagsMeasureTrailingSpaces | strFormat.GetFormatFlags() );
1844
m_context->MeasureCharacterRanges(ws, -1 , f,layoutRect, &strFormat,span,regions) ;
1847
for ( size_t i = 0 ; i < span ; ++i)
1849
regions[i].GetBounds(&bbox,m_context);
1850
widths[startPosition+i] = bbox.Width;
1853
startPosition += span;
1860
bool wxGDIPlusContext::ShouldOffset() const
1862
if ( !m_enableOffset )
1866
if ( !m_pen.IsNull() )
1868
penwidth = (int)((wxGDIPlusPenData*)m_pen.GetRefData())->GetWidth();
1869
if ( penwidth == 0 )
1872
return ( penwidth % 2 ) == 1;
1875
void* wxGDIPlusContext::GetNativeContext()
1880
// concatenates this transform with the current transform of this context
1881
void wxGDIPlusContext::ConcatTransform( const wxGraphicsMatrix& matrix )
1883
m_context->MultiplyTransform((Matrix*) matrix.GetNativeMatrix());
1886
// sets the transform of this context
1887
void wxGDIPlusContext::SetTransform( const wxGraphicsMatrix& matrix )
1889
m_context->SetTransform((Matrix*) matrix.GetNativeMatrix());
1892
// gets the matrix of this context
1893
wxGraphicsMatrix wxGDIPlusContext::GetTransform() const
1895
wxGraphicsMatrix matrix = CreateMatrix();
1896
m_context->GetTransform((Matrix*) matrix.GetNativeMatrix());
1900
void wxGDIPlusContext::GetSize( wxDouble* width, wxDouble *height )
1906
//-----------------------------------------------------------------------------
1907
// wxGDIPlusPrintingContext implementation
1908
//-----------------------------------------------------------------------------
1910
wxGDIPlusPrintingContext::wxGDIPlusPrintingContext( wxGraphicsRenderer* renderer,
1912
: wxGDIPlusContext(renderer, dc)
1914
Graphics* context = GetGraphics();
1916
//m_context->SetPageUnit(UnitDocument);
1918
// Setup page scale, based on DPI ratio.
1919
// Antecedent should be 100dpi when the default page unit
1920
// (UnitDisplay) is used. Page unit UnitDocument would require 300dpi
1921
// instead. Note that calling SetPageScale() does not have effect on
1922
// non-printing DCs (that is, any other than wxPrinterDC or
1923
// wxEnhMetaFileDC).
1924
REAL dpiRatio = 100.0 / context->GetDpiY();
1925
context->SetPageScale(dpiRatio);
1927
// We use this modifier when measuring fonts. It is needed because the
1928
// page scale is modified above.
1929
m_fontScaleRatio = context->GetDpiY() / 72.0;
1932
//-----------------------------------------------------------------------------
1933
// wxGDIPlusRenderer implementation
1934
//-----------------------------------------------------------------------------
1936
IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusRenderer,wxGraphicsRenderer)
1938
static wxGDIPlusRenderer gs_GDIPlusRenderer;
1940
wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
1942
return &gs_GDIPlusRenderer;
1945
bool wxGDIPlusRenderer::EnsureIsLoaded()
1947
// load gdiplus.dll if not yet loaded, but don't bother doing it again
1948
// if we already tried and failed (we don't want to spend lot of time
1949
// returning NULL from wxGraphicsContext::Create(), which may be called
1950
// relatively frequently):
1951
if ( m_loaded == -1 )
1956
return m_loaded == 1;
1959
// call EnsureIsLoaded() and return returnOnFail value if it fails
1960
#define ENSURE_LOADED_OR_RETURN(returnOnFail) \
1961
if ( !EnsureIsLoaded() ) \
1962
return (returnOnFail)
1965
void wxGDIPlusRenderer::Load()
1967
GdiplusStartupInput input;
1968
GdiplusStartupOutput output;
1969
if ( GdiplusStartup(&m_gditoken,&input,&output) == Gdiplus::Ok )
1971
wxLogTrace("gdiplus", "successfully initialized GDI+");
1976
wxLogTrace("gdiplus", "failed to initialize GDI+, missing gdiplus.dll?");
1981
void wxGDIPlusRenderer::Unload()
1985
GdiplusShutdown(m_gditoken);
1988
m_loaded = -1; // next Load() will try again
1991
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxWindowDC& dc)
1993
ENSURE_LOADED_OR_RETURN(NULL);
1994
wxGDIPlusContext* context = new wxGDIPlusContext(this, dc);
1995
context->EnableOffset(true);
1999
#if wxUSE_PRINTING_ARCHITECTURE
2000
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxPrinterDC& dc)
2002
ENSURE_LOADED_OR_RETURN(NULL);
2003
wxGDIPlusContext* context = new wxGDIPlusPrintingContext(this, dc);
2008
#if wxUSE_ENH_METAFILE
2009
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxEnhMetaFileDC& dc)
2011
ENSURE_LOADED_OR_RETURN(NULL);
2012
wxGDIPlusContext* context = new wxGDIPlusPrintingContext(this, dc);
2017
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxMemoryDC& dc)
2019
ENSURE_LOADED_OR_RETURN(NULL);
2020
wxGDIPlusContext* context = new wxGDIPlusContext(this, dc);
2021
context->EnableOffset(true);
2026
wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromImage(wxImage& image)
2028
ENSURE_LOADED_OR_RETURN(NULL);
2029
wxGDIPlusContext* context = new wxGDIPlusImageContext(this, image);
2030
context->EnableOffset(true);
2034
#endif // wxUSE_IMAGE
2036
wxGraphicsContext * wxGDIPlusRenderer::CreateMeasuringContext()
2038
ENSURE_LOADED_OR_RETURN(NULL);
2039
return new wxGDIPlusMeasuringContext(this);
2042
wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeContext( void * context )
2044
ENSURE_LOADED_OR_RETURN(NULL);
2045
return new wxGDIPlusContext(this,(Graphics*) context);
2049
wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromNativeWindow( void * window )
2051
ENSURE_LOADED_OR_RETURN(NULL);
2052
return new wxGDIPlusContext(this,(HWND) window);
2055
wxGraphicsContext * wxGDIPlusRenderer::CreateContext( wxWindow* window )
2057
ENSURE_LOADED_OR_RETURN(NULL);
2058
return new wxGDIPlusContext(this, (HWND) window->GetHWND() );
2063
wxGraphicsPath wxGDIPlusRenderer::CreatePath()
2065
ENSURE_LOADED_OR_RETURN(wxNullGraphicsPath);
2067
m.SetRefData( new wxGDIPlusPathData(this));
2074
wxGraphicsMatrix wxGDIPlusRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
2075
wxDouble tx, wxDouble ty)
2078
ENSURE_LOADED_OR_RETURN(wxNullGraphicsMatrix);
2080
wxGDIPlusMatrixData* data = new wxGDIPlusMatrixData( this );
2081
data->Set( a,b,c,d,tx,ty ) ;
2086
wxGraphicsPen wxGDIPlusRenderer::CreatePen(const wxPen& pen)
2088
ENSURE_LOADED_OR_RETURN(wxNullGraphicsPen);
2089
if ( !pen.IsOk() || pen.GetStyle() == wxTRANSPARENT )
2090
return wxNullGraphicsPen;
2094
p.SetRefData(new wxGDIPlusPenData( this, pen ));
2099
wxGraphicsBrush wxGDIPlusRenderer::CreateBrush(const wxBrush& brush )
2101
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2102
if ( !brush.IsOk() || brush.GetStyle() == wxTRANSPARENT )
2103
return wxNullGraphicsBrush;
2107
p.SetRefData(new wxGDIPlusBrushData( this, brush ));
2113
wxGDIPlusRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
2114
wxDouble x2, wxDouble y2,
2115
const wxGraphicsGradientStops& stops)
2117
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2119
wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
2120
d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
2126
wxGDIPlusRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
2127
wxDouble xc, wxDouble yc,
2129
const wxGraphicsGradientStops& stops)
2131
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBrush);
2133
wxGDIPlusBrushData* d = new wxGDIPlusBrushData( this );
2134
d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,stops);
2140
wxGDIPlusRenderer::CreateFont( const wxFont &font,
2141
const wxColour &col )
2143
ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
2147
p.SetRefData(new wxGDIPlusFontData( this, font, col ));
2151
return wxNullGraphicsFont;
2155
wxGDIPlusRenderer::CreateFont(double size,
2156
const wxString& facename,
2158
const wxColour& col)
2160
ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
2162
// Convert wxFont flags to GDI+ style:
2163
int style = FontStyleRegular;
2164
if ( flags & wxFONTFLAG_ITALIC )
2165
style |= FontStyleItalic;
2166
if ( flags & wxFONTFLAG_UNDERLINED )
2167
style |= FontStyleUnderline;
2168
if ( flags & wxFONTFLAG_BOLD )
2169
style |= FontStyleBold;
2170
if ( flags & wxFONTFLAG_STRIKETHROUGH )
2171
style |= FontStyleStrikeout;
2175
f.SetRefData(new wxGDIPlusFontData(this, facename, size, style, col));
2179
wxGraphicsBitmap wxGDIPlusRenderer::CreateBitmap( const wxBitmap &bitmap )
2181
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2182
if ( bitmap.IsOk() )
2185
p.SetRefData(new wxGDIPlusBitmapData( this , bitmap ));
2189
return wxNullGraphicsBitmap;
2194
wxGraphicsBitmap wxGDIPlusRenderer::CreateBitmapFromImage(const wxImage& image)
2196
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2199
// Notice that we rely on conversion from wxImage to wxBitmap here but
2200
// we could probably do it more efficiently by converting from wxImage
2201
// to GDI+ Bitmap directly, i.e. copying wxImage pixels to the buffer
2202
// returned by Bitmap::LockBits(). However this would require writing
2203
// code specific for this task while like this we can reuse existing
2204
// code (see also wxGDIPlusBitmapData::ConvertToImage()).
2205
wxGraphicsBitmap gb;
2206
gb.SetRefData(new wxGDIPlusBitmapData(this, image));
2210
return wxNullGraphicsBitmap;
2214
wxImage wxGDIPlusRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
2216
ENSURE_LOADED_OR_RETURN(wxNullImage);
2217
const wxGDIPlusBitmapData* const
2218
data = static_cast<wxGDIPlusBitmapData*>(bmp.GetGraphicsData());
2220
return data ? data->ConvertToImage() : wxNullImage;
2223
#endif // wxUSE_IMAGE
2226
wxGraphicsBitmap wxGDIPlusRenderer::CreateBitmapFromNativeBitmap( void *bitmap )
2228
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2229
if ( bitmap != NULL )
2232
p.SetRefData(new wxGDIPlusBitmapData( this , (Bitmap*) bitmap ));
2236
return wxNullGraphicsBitmap;
2239
wxGraphicsBitmap wxGDIPlusRenderer::CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
2241
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
2242
Bitmap* image = static_cast<wxGDIPlusBitmapData*>(bitmap.GetRefData())->GetGDIPlusBitmap();
2246
p.SetRefData(new wxGDIPlusBitmapData( this , image->Clone( (REAL) x , (REAL) y , (REAL) w , (REAL) h , PixelFormat32bppPARGB) ));
2250
return wxNullGraphicsBitmap;
2253
// Shutdown GDI+ at app exit, before possible dll unload
2254
class wxGDIPlusRendererModule : public wxModule
2257
virtual bool OnInit() { return true; }
2258
virtual void OnExit() { gs_GDIPlusRenderer.Unload(); }
2261
DECLARE_DYNAMIC_CLASS(wxGDIPlusRendererModule)
2264
IMPLEMENT_DYNAMIC_CLASS(wxGDIPlusRendererModule, wxModule)
2266
// ----------------------------------------------------------------------------
2267
// wxMSW-specific parts of wxGCDC
2268
// ----------------------------------------------------------------------------
2270
WXHDC wxGCDC::AcquireHDC()
2272
wxGraphicsContext * const gc = GetGraphicsContext();
2277
// we can't get the HDC if it is not a GDI+ context
2278
wxGraphicsRenderer* r1 = gc->GetRenderer();
2279
wxGraphicsRenderer* r2 = wxGraphicsRenderer::GetCairoRenderer();
2284
Graphics * const g = static_cast<Graphics *>(gc->GetNativeContext());
2285
return g ? g->GetHDC() : NULL;
2288
void wxGCDC::ReleaseHDC(WXHDC hdc)
2293
wxGraphicsContext * const gc = GetGraphicsContext();
2294
wxCHECK_RET( gc, "can't release HDC because there is no wxGraphicsContext" );
2297
// we can't get the HDC if it is not a GDI+ context
2298
wxGraphicsRenderer* r1 = gc->GetRenderer();
2299
wxGraphicsRenderer* r2 = wxGraphicsRenderer::GetCairoRenderer();
2304
Graphics * const g = static_cast<Graphics *>(gc->GetNativeContext());
2305
wxCHECK_RET( g, "can't release HDC because there is no Graphics" );
2307
g->ReleaseHDC((HDC)hdc);
2310
#endif // wxUSE_GRAPHICS_CONTEXT