Allow passing multi-line strings to wxDC::DrawText(), even under MSW.

[wxWidgets.git] / src / generic / graphicc.cpp

diff --git a/src/generic/graphicc.cpp b/src/generic/graphicc.cpp
index 94b1247b22d04b0d2fc02d6d04f4b0f06563fa2b..9b9e88b22feda74941714ab168c9a2bebe847612 100644 (file)
--- a/src/generic/graphicc.cpp
+++ b/src/generic/graphicc.cpp
@@ -19,6 +19,10 @@
 
 #include "wx/graphics.h"
 
 
 #include "wx/graphics.h"
 

+#if wxUSE_CAIRO
+
+#include "wx/cairo.h"
+

 #ifndef WX_PRECOMP
     #include "wx/bitmap.h"
     #include "wx/icon.h"
 #ifndef WX_PRECOMP
     #include "wx/bitmap.h"
     #include "wx/icon.h"


@@ -60,6 +64,10 @@ using namespace std;
 #endif
 
 #include <cairo.h>
 #endif
 
 #include <cairo.h>

+#ifdef __WXMSW__
+#include <cairo-win32.h>
+#endif
+

 #ifdef __WXGTK__
 #include <gtk/gtk.h>
 #include "wx/fontutil.h"
 #ifdef __WXGTK__
 #include <gtk/gtk.h>
 #include "wx/fontutil.h"


@@ -240,14 +248,20 @@ public:
     ~wxCairoBrushData ();
 
     virtual void Apply( wxGraphicsContext* context );
     ~wxCairoBrushData ();
 
     virtual void Apply( wxGraphicsContext* context );

-    void CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-        const wxColour&c1, const wxColour&c2 );
-    void CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-        const wxColour &oColor, const wxColour &cColor );
+
+    void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                                   wxDouble x2, wxDouble y2,
+                                   const wxGraphicsGradientStops& stops);
+    void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                                   wxDouble xc, wxDouble yc, wxDouble radius,
+                                   const wxGraphicsGradientStops& stops);

 
 protected:
     virtual void Init();
 
 
 protected:
     virtual void Init();
 

+    // common part of Create{Linear,Radial}GradientBrush()
+    void AddGradientStops(const wxGraphicsGradientStops& stops);
+

 private :
     double m_red;
     double m_green;
 private :
     double m_red;
     double m_green;


@@ -284,12 +298,16 @@ private :
     cairo_font_slant_t m_slant;
     cairo_font_weight_t m_weight;
 #endif
     cairo_font_slant_t m_slant;
     cairo_font_weight_t m_weight;
 #endif

+#ifdef __WXMSW__
+    wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
+#endif

 };
 
 class wxCairoBitmapData : public wxGraphicsObjectRefData
 {
 public:
     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
 };
 
 class wxCairoBitmapData : public wxGraphicsObjectRefData
 {
 public:
     wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );

+    wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );

     ~wxCairoBitmapData();
 
     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
     ~wxCairoBitmapData();
 
     virtual cairo_surface_t* GetCairoSurface() { return m_surface; }


@@ -330,6 +348,9 @@ public:
     }
 
     virtual void Clip( const wxRegion &region );
     }
 
     virtual void Clip( const wxRegion &region );

+#ifdef __WXMSW__
+    cairo_surface_t* m_mswSurface;
+#endif

 
     // clips drawings to the rect
     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
 
     // clips drawings to the rect
     virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );


@@ -668,26 +689,50 @@ void wxCairoBrushData::Apply( wxGraphicsContext* context )
     }
 }
 
     }
 }
 

-void wxCairoBrushData::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-        const wxColour&c1, const wxColour&c2 )
+void wxCairoBrushData::AddGradientStops(const wxGraphicsGradientStops& stops)
+{
+    // loop over all the stops, they include the beginning and ending ones
+    const unsigned numStops = stops.GetCount();
+    for ( unsigned n = 0; n < numStops; n++ )
+    {
+        const wxGraphicsGradientStop stop = stops.Item(n);
+
+        const wxColour col = stop.GetColour();
+
+        cairo_pattern_add_color_stop_rgba
+        (
+            m_brushPattern,
+            stop.GetPosition(),
+            col.Red()/255.0,
+            col.Green()/255.0,
+            col.Blue()/255.0,
+            col.Alpha()/255.0
+        );
+    }
+
+    wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS,
+                 wxT("Couldn't create cairo pattern"));
+}
+
+void
+wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                                            wxDouble x2, wxDouble y2,
+                                            const wxGraphicsGradientStops& stops)

 {
     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
 {
     m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);

-    cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,c1.Red()/255.0,
-        c1.Green()/255.0, c1.Blue()/255.0,c1.Alpha()/255.0);
-    cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,c2.Red()/255.0,
-        c2.Green()/255.0, c2.Blue()/255.0,c2.Alpha()/255.0);
-    wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
+
+    AddGradientStops(stops);

 }
 
 }
 

-void wxCairoBrushData::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-        const wxColour &oColor, const wxColour &cColor )
+void
+wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                                            wxDouble xc, wxDouble yc,
+                                            wxDouble radius,
+                                            const wxGraphicsGradientStops& stops)

 {
     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
 {
     m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);

-    cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,oColor.Red()/255.0,
-        oColor.Green()/255.0, oColor.Blue()/255.0,oColor.Alpha()/255.0);
-    cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,cColor.Red()/255.0,
-        cColor.Green()/255.0, cColor.Blue()/255.0,cColor.Alpha()/255.0);
-    wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
+
+    AddGradientStops(stops);

 }
 
 void wxCairoBrushData::Init()
 }
 
 void wxCairoBrushData::Init()


@@ -884,9 +929,10 @@ void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h)
     }
 }
 
     }
 }
 

-bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode WXUNUSED(fillStyle) ) const
+bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const

 {
 {

-    return cairo_in_stroke( m_pathContext, x, y) != 0;
+    cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
+    return cairo_in_fill( m_pathContext, x, y) != 0;

 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------


@@ -1014,12 +1060,19 @@ void * wxCairoMatrixData::GetNativeMatrix() const
 // wxCairoBitmap implementation
 //-----------------------------------------------------------------------------
 
 // wxCairoBitmap implementation
 //-----------------------------------------------------------------------------
 

+wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
+    wxGraphicsObjectRefData( renderer )
+{
+    m_surface = bitmap;
+    m_pattern = cairo_pattern_create_for_surface(m_surface);
+}
+

 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
 {
     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
 
 wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
 {
     wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
 

-    int bw = bmp.GetWidth();
-    int bh = bmp.GetHeight();
+    int bw = m_width = bmp.GetWidth();
+    int bh = m_height = bmp.GetHeight();

     wxBitmap bmpSource = bmp;  // we need a non-const instance
     m_buffer = new unsigned char[bw*bh*4];
     wxUint32* data = (wxUint32*)m_buffer;
     wxBitmap bmpSource = bmp;  // we need a non-const instance
     m_buffer = new unsigned char[bw*bh*4];
     wxUint32* data = (wxUint32*)m_buffer;


@@ -1084,12 +1137,17 @@ wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitm
             p.OffsetY(pixData, 1);
         }
     }
             p.OffsetY(pixData, 1);
         }
     }

+    m_pattern = cairo_pattern_create_for_surface(m_surface);

 }
 
 wxCairoBitmapData::~wxCairoBitmapData()
 {
 }
 
 wxCairoBitmapData::~wxCairoBitmapData()
 {

-    cairo_pattern_destroy(m_pattern);
-    cairo_surface_destroy(m_surface);
+    if (m_pattern)
+        cairo_pattern_destroy(m_pattern);
+
+    if (m_surface)
+        cairo_surface_destroy(m_surface);
+

     delete [] m_buffer;
 }
 
     delete [] m_buffer;
 }
 


@@ -1214,6 +1272,18 @@ wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawa
 }
 #endif
 
 }
 #endif
 

+#ifdef __WXMSW__
+wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
+: wxGraphicsContext(renderer)
+{
+    m_mswSurface = cairo_win32_surface_create(handle);
+    m_context = cairo_create(m_mswSurface);
+    PushState();
+    PushState();
+}
+#endif
+
+

 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
 : wxGraphicsContext(renderer)
 {
 wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
 : wxGraphicsContext(renderer)
 {


@@ -1245,9 +1315,17 @@ wxCairoContext::~wxCairoContext()
     if ( m_context )
     {
         PopState();
     if ( m_context )
     {
         PopState();

+#ifdef __WXMSW__
+    m_mswSurface = cairo_win32_surface_create((HDC)window->GetHandle());
+    m_context = cairo_create(m_mswSurface);
+#endif

         PopState();
         cairo_destroy(m_context);
     }
         PopState();
         cairo_destroy(m_context);
     }

+#ifdef __WXMSW__
+    if ( m_mswSurface )
+        cairo_surface_destroy(m_mswSurface);
+#endif

 }
 
 void wxCairoContext::Init(cairo_t *context)
 }
 
 void wxCairoContext::Init(cairo_t *context)


@@ -1393,10 +1471,10 @@ void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDoubl
 
     wxDouble scaleX = w / size.GetWidth();
     wxDouble scaleY = h / size.GetHeight();
 
     wxDouble scaleX = w / size.GetWidth();
     wxDouble scaleY = h / size.GetHeight();

-    cairo_scale(m_context, scaleX, scaleY);

 
     // prepare to draw the image
     cairo_translate(m_context, x, y);
 
     // prepare to draw the image
     cairo_translate(m_context, x, y);

+    cairo_scale(m_context, scaleX, scaleY);

     cairo_set_source(m_context, pattern);
     // use the original size here since the context is scaled already...
     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
     cairo_set_source(m_context, pattern);
     // use the original size here since the context is scaled already...
     cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());


@@ -1688,14 +1766,16 @@ public :
 
     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
 
 
     virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
 

-    // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
-    virtual wxGraphicsBrush CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-        const wxColour&c1, const wxColour&c2) ;
+    virtual wxGraphicsBrush
+    CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                              wxDouble x2, wxDouble y2,
+                              const wxGraphicsGradientStops& stops);

 
 

-    // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
-    // with radius r and color cColor
-    virtual wxGraphicsBrush CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-        const wxColour &oColor, const wxColour &cColor) ;
+    virtual wxGraphicsBrush
+    CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                              wxDouble xc, wxDouble yc,
+                              wxDouble radius,
+                              const wxGraphicsGradientStops& stops);

 
     // sets the font
     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
 
     // sets the font
     virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;


@@ -1703,6 +1783,9 @@ public :
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
 
     // create a native bitmap representation
     virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
 

+    // create a graphics bitmap from a native bitmap
+    virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
+

     // create a subimage from a native image representation
     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
 
     // create a subimage from a native image representation
     virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h  );
 


@@ -1721,13 +1804,6 @@ static wxCairoRenderer gs_cairoGraphicsRenderer;
 extern wxGraphicsRenderer* gCairoRenderer;
 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
 
 extern wxGraphicsRenderer* gCairoRenderer;
 wxGraphicsRenderer* gCairoRenderer = &gs_cairoGraphicsRenderer;
 

-#ifdef __WXGTK__
-wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
-{
-    return &gs_cairoGraphicsRenderer;
-}
-#endif
-

 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
 {
     return new wxCairoContext(this,dc);
 wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
 {
     return new wxCairoContext(this,dc);


@@ -1752,7 +1828,12 @@ wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
 
 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
 {
 
 wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
 {

+#ifdef __WXMSW__
+    return new wxCairoContext(this,(HDC)context);
+#endif
+#ifdef __WXGTK__

     return new wxCairoContext(this,(cairo_t*)context);
     return new wxCairoContext(this,(cairo_t*)context);

+#endif

 }
 
 
 }
 
 


@@ -1826,25 +1907,26 @@ wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
     }
 }
 
     }
 }
 

-// sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
-wxGraphicsBrush wxCairoRenderer::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,
-                                                                      const wxColour&c1, const wxColour&c2)
+wxGraphicsBrush
+wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+                                           wxDouble x2, wxDouble y2,
+                                           const wxGraphicsGradientStops& stops)

 {
     wxGraphicsBrush p;
     wxCairoBrushData* d = new wxCairoBrushData( this );
 {
     wxGraphicsBrush p;
     wxCairoBrushData* d = new wxCairoBrushData( this );

-    d->CreateLinearGradientBrush(x1, y1, x2, y2, c1, c2);
+    d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);

     p.SetRefData(d);
     return p;
 }
 
     p.SetRefData(d);
     return p;
 }
 

-// sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)
-// with radius r and color cColor
-wxGraphicsBrush wxCairoRenderer::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
-                                                                      const wxColour &oColor, const wxColour &cColor)
+wxGraphicsBrush
+wxCairoRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+                                           wxDouble xc, wxDouble yc, wxDouble r,
+                                           const wxGraphicsGradientStops& stops)

 {
     wxGraphicsBrush p;
     wxCairoBrushData* d = new wxCairoBrushData( this );
 {
     wxGraphicsBrush p;
     wxCairoBrushData* d = new wxCairoBrushData( this );

-    d->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor);
+    d->CreateRadialGradientBrush(xo, yo, xc, yc, r, stops);

     p.SetRefData(d);
     return p;
 }
     p.SetRefData(d);
     return p;
 }


@@ -1874,6 +1956,18 @@ wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
         return wxNullGraphicsBitmap;
 }
 
         return wxNullGraphicsBitmap;
 }
 

+wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
+{
+    if ( bitmap != NULL )
+    {
+        wxGraphicsBitmap p;
+        p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
+        return p;
+    }
+    else
+        return wxNullGraphicsBitmap;
+}
+

 wxGraphicsBitmap
 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
                                  wxDouble WXUNUSED(x),
 wxGraphicsBitmap
 wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
                                  wxDouble WXUNUSED(x),


@@ -1885,4 +1979,27 @@ wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
     return wxNullGraphicsBitmap;
 }
 
     return wxNullGraphicsBitmap;
 }
 

-#endif  // wxUSE_GRAPHICS_CONTEXT
+wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
+{
+    return &gs_cairoGraphicsRenderer;
+}
+
+#else // !wxUSE_CAIRO
+
+wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
+{
+    return NULL;
+}
+
+#endif  // wxUSE_CAIRO/!wxUSE_CAIRO
+
+// MSW and OS X have their own native default renderers, but the other ports
+// use Cairo by default
+#if !(defined(__WXMSW__) || defined(__WXOSX__))
+wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
+{
+    return GetCairoRenderer();
+}
+#endif // !(__WXMSW__ || __WXOSX__)
+
+#endif // wxUSE_GRAPHICS_CONTEXT