Changed wxMSW wxGraphicsContext font rendering and extent calculation to take into the account that the page scale has been manually changed when using print contexts (fixes #12830)
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66699 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
@@ -98,6 +98,8 @@ inline Color wxColourToColor(const wxColour& col)
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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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{
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public :
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@@ -289,7 +291,10 @@ private :
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class wxGDIPlusFontData : public wxGraphicsObjectRefData
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{
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public:
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wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
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wxGDIPlusFontData( wxGraphicsRenderer* renderer,
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const wxGDIPlusContext* gc,
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const wxFont &font,
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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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@@ -302,7 +307,8 @@ private :
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class wxGDIPlusContext : public wxGraphicsContext
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{
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public:
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wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc , wxDouble width, wxDouble height );
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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();
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@@ -354,12 +360,21 @@ public:
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virtual void PushState();
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virtual void PopState();
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// sets the font of this context
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virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) const;
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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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protected:
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wxDouble m_fontScaleRatio;
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private:
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void Init();
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void SetDefaults();
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@@ -400,6 +415,114 @@ private:
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DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusMeasuringContext)
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} ;
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class wxGDIPlusPrintingContext : public wxGDIPlusContext
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{
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public:
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wxGDIPlusPrintingContext( wxGraphicsRenderer* renderer, const wxDC& dc );
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virtual ~wxGDIPlusPrintingContext() { }
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protected:
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};
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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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{
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public :
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wxGDIPlusRenderer()
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{
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m_loaded = -1;
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m_gditoken = 0;
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}
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virtual ~wxGDIPlusRenderer()
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{
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if ( m_loaded == 1 )
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{
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Unload();
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}
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}
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// Context
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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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#endif
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#if wxUSE_ENH_METAFILE
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virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
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#endif
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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 * CreateMeasuringContext();
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// Path
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virtual wxGraphicsPath CreatePath();
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// Matrix
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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);
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virtual wxGraphicsBrush
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CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
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wxDouble xc, wxDouble yc,
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wxDouble radius,
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const wxGraphicsGradientStops& stops);
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// create a native bitmap representation
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virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
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// stub: should not be called directly
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virtual wxGraphicsFont CreateFont( const wxFont& WXUNUSED(font),
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const wxColour& WXUNUSED(col) )
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{ wxFAIL; return wxNullGraphicsFont; }
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// this is used to really create the font
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wxGraphicsFont CreateGDIPlusFont( const wxGDIPlusContext* gc,
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const wxFont &font,
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const wxColour &col );
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// create a graphics bitmap from a native bitmap
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virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
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// create a subimage from a native image representation
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virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
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protected :
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bool EnsureIsLoaded();
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void Load();
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void Unload();
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friend class wxGDIPlusRendererModule;
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private :
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int m_loaded;
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ULONG_PTR m_gditoken;
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DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusRenderer)
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} ;
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//-----------------------------------------------------------------------------
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// wxGDIPlusPen implementation
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//-----------------------------------------------------------------------------
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@@ -718,14 +841,13 @@ wxGDIPlusBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
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// wxGDIPlusFont implementation
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//-----------------------------------------------------------------------------
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wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont &font,
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const wxColour& col ) : wxGraphicsObjectRefData( renderer )
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wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer,
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const wxGDIPlusContext* gc,
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const wxFont &font,
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const wxColour& col )
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: wxGraphicsObjectRefData( renderer )
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{
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m_textBrush = NULL;
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m_font = NULL;
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wxWCharBuffer s = font.GetFaceName().wc_str( *wxConvUI );
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int size = font.GetPointSize();
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int style = FontStyleRegular;
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if ( font.GetStyle() == wxFONTSTYLE_ITALIC )
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style |= FontStyleItalic;
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@@ -733,7 +855,25 @@ wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer, const wxFont
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style |= FontStyleUnderline;
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if ( font.GetWeight() == wxFONTWEIGHT_BOLD )
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style |= FontStyleBold;
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m_font = new Font( s , size , style );
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Graphics* context = gc->GetGraphics();
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Unit fontUnit = context->GetPageUnit();
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// if fontUnit is UnitDisplay, then specify UnitPixel, otherwise
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// you'll get a "InvalidParameter" from GDI+
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if ( fontUnit == UnitDisplay )
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fontUnit = UnitPixel;
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REAL points = font.GetPointSize();
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// This scaling is needed when we use unit other than the
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// default UnitPoint. It works for both display and printing.
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REAL size = points * (100.0 / 72.0);
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// NB: font unit should match context's unit. We can use UnitPixel,
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// as that is what the print context should use.
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m_font = new Font( s, size, style, fontUnit );
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m_textBrush = new SolidBrush(wxColourToColor(col));
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}
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@@ -1138,6 +1278,22 @@ wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc, wxDou
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SetDefaults();
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}
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wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, const wxDC& dc )
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: wxGraphicsContext(renderer)
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{
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Init();
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wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
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HDC hdc = (HDC) msw->GetHDC();
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m_context = new Graphics(hdc);
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wxSize sz = dc.GetSize();
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m_width = sz.x;
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m_height = sz.y;
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SetDefaults();
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}
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wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd )
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: wxGraphicsContext(renderer)
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{
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@@ -1169,6 +1325,7 @@ void wxGDIPlusContext::Init()
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m_state2= 0;
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m_height = 0;
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m_width = 0;
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m_fontScaleRatio = 1.0;
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}
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void wxGDIPlusContext::SetDefaults()
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@@ -1178,14 +1335,6 @@ void wxGDIPlusContext::SetDefaults()
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m_context->SetSmoothingMode(SmoothingModeHighQuality);
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m_state1 = m_context->Save();
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m_state2 = m_context->Save();
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// Setup page scale, based on DPI ratio.
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// Antecedent should be 100dpi when the default page unit (UnitDisplay)
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// is used. Page unit UnitDocument would require 300dpi instead.
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// Note that calling SetPageScale() does not have effect on non-printing
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// DCs (that is, any other than wxPrinterDC or wxEnhMetaFileDC).
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REAL dpiRatio = 100.0 / m_context->GetDpiY();
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m_context->SetPageScale(dpiRatio);
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}
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wxGDIPlusContext::~wxGDIPlusContext()
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@@ -1459,6 +1608,14 @@ void wxGDIPlusContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxD
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DeleteObject(iconInfo.hbmMask);
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}
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wxGraphicsFont wxGDIPlusContext::CreateFont( const wxFont &font,
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const wxColour &col ) const
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{
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wxGDIPlusRenderer* renderer =
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static_cast<wxGDIPlusRenderer*>(GetRenderer());
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return renderer->CreateGDIPlusFont(this, font, col);
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}
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void wxGDIPlusContext::DoDrawFilledText(const wxString& str,
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wxDouble x, wxDouble y,
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const wxGraphicsBrush& brush)
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@@ -1500,7 +1657,7 @@ void wxGDIPlusContext::GetTextExtent( const wxString &str, wxDouble *width, wxDo
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f->GetFamily(&ffamily) ;
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REAL factorY = m_context->GetDpiY() / 72.0 ;
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REAL factorY = m_fontScaleRatio;
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REAL rDescent = ffamily.GetCellDescent(FontStyleRegular) *
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f->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
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@@ -1629,97 +1786,32 @@ void wxGDIPlusContext::GetSize( wxDouble* width, wxDouble *height )
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*width = m_width;
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*height = m_height;
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}
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//-----------------------------------------------------------------------------
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// wxGDIPlusRenderer declaration
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// wxGDIPlusPrintingContext implementation
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//-----------------------------------------------------------------------------
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class wxGDIPlusRenderer : public wxGraphicsRenderer
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wxGDIPlusPrintingContext::wxGDIPlusPrintingContext( wxGraphicsRenderer* renderer,
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const wxDC& dc )
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: wxGDIPlusContext(renderer, dc)
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{
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public :
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wxGDIPlusRenderer()
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{
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m_loaded = -1;
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m_gditoken = 0;
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}
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Graphics* context = GetGraphics();
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virtual ~wxGDIPlusRenderer()
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{
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if ( m_loaded == 1 )
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{
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Unload();
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}
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}
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//m_context->SetPageUnit(UnitDocument);
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// Context
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// Setup page scale, based on DPI ratio.
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// Antecedent should be 100dpi when the default page unit
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// (UnitDisplay) is used. Page unit UnitDocument would require 300dpi
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// instead. Note that calling SetPageScale() does not have effect on
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// non-printing DCs (that is, any other than wxPrinterDC or
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// wxEnhMetaFileDC).
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REAL dpiRatio = 100.0 / context->GetDpiY();
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context->SetPageScale(dpiRatio);
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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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#endif
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#if wxUSE_ENH_METAFILE
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virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
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#endif
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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 * CreateMeasuringContext();
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// Path
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virtual wxGraphicsPath CreatePath();
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// Matrix
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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);
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virtual wxGraphicsBrush
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CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
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wxDouble xc, wxDouble yc,
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wxDouble radius,
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const wxGraphicsGradientStops& stops);
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// sets the font
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virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
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// create a native bitmap representation
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virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
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// create a graphics bitmap from a native bitmap
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virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
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// create a subimage from a native image representation
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virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
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protected :
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bool EnsureIsLoaded();
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void Load();
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void Unload();
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friend class wxGDIPlusRendererModule;
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private :
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int m_loaded;
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ULONG_PTR m_gditoken;
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DECLARE_DYNAMIC_CLASS_NO_COPY(wxGDIPlusRenderer)
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} ;
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// We use this modifier when measuring fonts. It is needed because the
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// page scale is modified above.
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m_fontScaleRatio = context->GetDpiY() / 72.0;
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}
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//-----------------------------------------------------------------------------
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// wxGDIPlusRenderer implementation
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@@ -1783,18 +1875,15 @@ void wxGDIPlusRenderer::Unload()
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wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxWindowDC& dc)
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{
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ENSURE_LOADED_OR_RETURN(NULL);
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wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
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wxSize sz = dc.GetSize();
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return new wxGDIPlusContext(this,(HDC) msw->GetHDC(), sz.x, sz.y);
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return new wxGDIPlusContext(this, dc);
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}
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#if wxUSE_PRINTING_ARCHITECTURE
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wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxPrinterDC& dc)
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{
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ENSURE_LOADED_OR_RETURN(NULL);
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wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
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wxSize sz = dc.GetSize();
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return new wxGDIPlusContext(this,(HDC) msw->GetHDC(), sz.x, sz.y);
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wxGDIPlusContext* context = new wxGDIPlusPrintingContext(this, dc);
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return context;
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}
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#endif
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@@ -1802,18 +1891,15 @@ wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxPrinterDC& dc)
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wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxEnhMetaFileDC& dc)
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{
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ENSURE_LOADED_OR_RETURN(NULL);
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wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
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wxSize sz = dc.GetSize();
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return new wxGDIPlusContext(this,(HDC) msw->GetHDC(), sz.x, sz.y);
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wxGDIPlusContext* context = new wxGDIPlusPrintingContext(this, dc);
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return context;
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}
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#endif
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wxGraphicsContext * wxGDIPlusRenderer::CreateContext( const wxMemoryDC& dc)
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{
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ENSURE_LOADED_OR_RETURN(NULL);
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wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
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wxSize sz = dc.GetSize();
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return new wxGDIPlusContext(this,(HDC) msw->GetHDC(), sz.x, sz.y);
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return new wxGDIPlusContext(this, dc);
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}
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wxGraphicsContext * wxGDIPlusRenderer::CreateMeasuringContext()
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@@ -1919,14 +2005,16 @@ wxGDIPlusRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
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return p;
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}
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// sets the font
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wxGraphicsFont wxGDIPlusRenderer::CreateFont( const wxFont &font , const wxColour &col )
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wxGraphicsFont
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wxGDIPlusRenderer::CreateGDIPlusFont( const wxGDIPlusContext* gc,
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const wxFont &font,
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const wxColour &col )
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{
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ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
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if ( font.Ok() )
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{
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wxGraphicsFont p;
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p.SetRefData(new wxGDIPlusFontData( this , font, col ));
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p.SetRefData(new wxGDIPlusFontData( this, gc, font, col ));
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return p;
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}
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else
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Reference in New Issue
Block a user