#endif
#include "wx/graphics.h"
+#include "wx/rawbmp.h"
#if wxUSE_GRAPHICS_CONTEXT
#include <gtk/gtk.h>
#endif
-class WXDLLIMPEXP_CORE wxCairoPath : public wxGraphicsPath
+class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
{
public :
- wxCairoPath();
- wxCairoPath(wxGraphicsRenderer* renderer, cairo_t* pathcontext = NULL);
- ~wxCairoPath();
+ wxCairoPathData(wxGraphicsRenderer* renderer, cairo_t* path = NULL);
+ ~wxCairoPathData();
- virtual wxGraphicsPath *Clone() const;
+ virtual wxGraphicsObjectRefData *Clone() const;
//
// These are the path primitives from which everything else can be constructed
virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
// gets the last point of the current path, (0,0) if not yet set
- virtual void GetCurrentPoint( wxDouble& x, wxDouble&y) ;
+ virtual void GetCurrentPoint( wxDouble* x, wxDouble* y) const;
// adds another path
- virtual void AddPath( const wxGraphicsPath* path );
+ virtual void AddPath( const wxGraphicsPathData* path );
// closes the current sub-path
virtual void CloseSubpath();
virtual void * GetNativePath() const ;
// give the native path returned by GetNativePath() back (there might be some deallocations necessary)
- virtual void UnGetNativePath(void *p) ;
+ virtual void UnGetNativePath(void *p) const;
// transforms each point of this path by the matrix
- virtual void Transform( wxGraphicsMatrix* matrix ) ;
+ virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
// gets the bounding box enclosing all points (possibly including control points)
- virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) ;
+ virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
- virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxWINDING_RULE) ;
+ virtual bool Contains( wxDouble x, wxDouble y, int fillStyle = wxWINDING_RULE) const;
private :
cairo_t* m_pathContext;
- DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoPath)
};
-class WXDLLIMPEXP_CORE wxCairoMatrix : public wxGraphicsMatrix
+class WXDLLIMPEXP_CORE wxCairoMatrixData : public wxGraphicsMatrixData
{
public :
- wxCairoMatrix() ;
+ wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
+ virtual ~wxCairoMatrixData() ;
- wxCairoMatrix(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
- virtual ~wxCairoMatrix() ;
-
- virtual wxGraphicsMatrix *Clone() const ;
+ virtual wxGraphicsObjectRefData *Clone() const ;
// concatenates the matrix
- virtual void Concat( const wxGraphicsMatrix *t );
-
- // copies the passed in matrix
- virtual void Copy( const wxGraphicsMatrix *t );
+ virtual void Concat( const wxGraphicsMatrixData *t );
// sets the matrix to the respective values
virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
wxDouble tx=0.0, wxDouble ty=0.0);
+ // gets the component valuess of the matrix
+ virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL, wxDouble* c=NULL,
+ wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
+
// makes this the inverse matrix
virtual void Invert();
// returns true if the elements of the transformation matrix are equal ?
- virtual bool IsEqual( const wxGraphicsMatrix* t) const ;
+ virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
// return true if this is the identity matrix
- virtual bool IsIdentity();
+ virtual bool IsIdentity() const;
//
// transformation
//
// applies that matrix to the point
- virtual void TransformPoint( wxDouble *x, wxDouble *y );
+ virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
// applies the matrix except for translations
- virtual void TransformDistance( wxDouble *dx, wxDouble *dy );
+ virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
// returns the native representation
virtual void * GetNativeMatrix() const;
private:
cairo_matrix_t m_matrix ;
-
- DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoMatrix)
} ;
class WXDLLIMPEXP_CORE wxCairoPenData : public wxGraphicsObjectRefData
virtual void * GetNativeContext();
- virtual void StrokePath( const wxGraphicsPath *p );
- virtual void FillPath( const wxGraphicsPath *p , int fillStyle = wxWINDING_RULE );
+ virtual void StrokePath( const wxGraphicsPath& p );
+ virtual void FillPath( const wxGraphicsPath& p , int fillStyle = wxWINDING_RULE );
virtual void Translate( wxDouble dx , wxDouble dy );
virtual void Scale( wxDouble xScale , wxDouble yScale );
virtual void Rotate( wxDouble angle );
// concatenates this transform with the current transform of this context
- virtual void ConcatTransform( const wxGraphicsMatrix* matrix );
+ virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
// sets the transform of this context
- virtual void SetTransform( const wxGraphicsMatrix* matrix );
+ virtual void SetTransform( const wxGraphicsMatrix& matrix );
// gets the matrix of this context
- virtual void GetTransform( wxGraphicsMatrix* matrix );
+ virtual wxGraphicsMatrix GetTransform() const;
virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
}
//-----------------------------------------------------------------------------
-// wxCairoPath implementation
+// wxCairoPathData implementation
//-----------------------------------------------------------------------------
-IMPLEMENT_DYNAMIC_CLASS(wxCairoPath,wxGraphicsPath)
-
-wxCairoPath::wxCairoPath() : wxGraphicsPath(NULL)
-{
- wxLogDebug(wxT("Illegal Constructor called"));
-}
-
-wxCairoPath::wxCairoPath( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
- : wxGraphicsPath(renderer)
+wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
+ : wxGraphicsPathData(renderer)
{
if (pathcontext)
{
}
}
-wxCairoPath::~wxCairoPath()
+wxCairoPathData::~wxCairoPathData()
{
cairo_destroy(m_pathContext);
}
-wxGraphicsPath *wxCairoPath::Clone() const
+wxGraphicsObjectRefData *wxCairoPathData::Clone() const
{
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
cairo_t* pathcontext = cairo_create(surface);
cairo_path_t* path = cairo_copy_path(m_pathContext);
cairo_append_path(pathcontext, path);
cairo_path_destroy(path);
- return new wxCairoPath( GetRenderer() ,pathcontext);
+ return new wxCairoPathData( GetRenderer() ,pathcontext);
}
-void* wxCairoPath::GetNativePath() const
+void* wxCairoPathData::GetNativePath() const
{
return cairo_copy_path(m_pathContext) ;
}
-void wxCairoPath::UnGetNativePath(void *p)
+void wxCairoPathData::UnGetNativePath(void *p) const
{
cairo_path_destroy((cairo_path_t*)p);
}
// The Primitives
//
-void wxCairoPath::MoveToPoint( wxDouble x , wxDouble y )
+void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
{
cairo_move_to(m_pathContext,x,y);
}
-void wxCairoPath::AddLineToPoint( wxDouble x , wxDouble y )
+void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
{
cairo_line_to(m_pathContext,x,y);
}
-void wxCairoPath::AddPath( const wxGraphicsPath* path )
+void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
{
- // TODO
+ cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
+ cairo_append_path(m_pathContext, p);
+ UnGetNativePath(p);
}
-void wxCairoPath::CloseSubpath()
+void wxCairoPathData::CloseSubpath()
{
cairo_close_path(m_pathContext);
}
-void wxCairoPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
+void wxCairoPathData::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
{
cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
}
// gets the last point of the current path, (0,0) if not yet set
-void wxCairoPath::GetCurrentPoint( wxDouble& x, wxDouble&y)
+void wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
{
double dx,dy;
cairo_get_current_point(m_pathContext,&dx,&dy);
- x = dx;
- y = dy;
+ if (x)
+ *x = dx;
+ if (y)
+ *y = dy;
}
-void wxCairoPath::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
+void wxCairoPathData::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
{
// as clockwise means positive in our system (y pointing downwards)
// TODO make this interpretation dependent of the
}
// transforms each point of this path by the matrix
-void wxCairoPath::Transform( wxGraphicsMatrix* matrix )
+void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
{
// as we don't have a true path object, we have to apply the inverse
// matrix to the context
}
// gets the bounding box enclosing all points (possibly including control points)
-void wxCairoPath::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h)
+void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
{
double x1,y1,x2,y2;
}
}
-bool wxCairoPath::Contains( wxDouble x, wxDouble y, int fillStyle )
+bool wxCairoPathData::Contains( wxDouble x, wxDouble y, int fillStyle ) const
{
- return cairo_in_stroke( m_pathContext, x, y) != NULL;
+ return cairo_in_stroke( m_pathContext, x, y) != 0;
}
//-----------------------------------------------------------------------------
-// wxCairoMatrix implementation
+// wxCairoMatrixData implementation
//-----------------------------------------------------------------------------
-IMPLEMENT_DYNAMIC_CLASS(wxCairoMatrix,wxGraphicsMatrix)
-
-wxCairoMatrix::wxCairoMatrix() : wxGraphicsMatrix(NULL)
-{
- wxLogDebug(wxT("Illegal Constructor called"));
-}
-
-wxCairoMatrix::wxCairoMatrix(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
- : wxGraphicsMatrix(renderer)
+wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
+ : wxGraphicsMatrixData(renderer)
{
if ( matrix )
m_matrix = *matrix;
}
-wxCairoMatrix::~wxCairoMatrix()
+wxCairoMatrixData::~wxCairoMatrixData()
{
// nothing to do
}
-wxGraphicsMatrix *wxCairoMatrix::Clone() const
+wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
{
- return new wxCairoMatrix(GetRenderer(),&m_matrix);
+ return new wxCairoMatrixData(GetRenderer(),&m_matrix);
}
// concatenates the matrix
-void wxCairoMatrix::Concat( const wxGraphicsMatrix *t )
+void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
{
cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
}
-// copies the passed in matrix
-void wxCairoMatrix::Copy( const wxGraphicsMatrix *t )
-{
- m_matrix = *((cairo_matrix_t*) t->GetNativeMatrix());
-}
-
// sets the matrix to the respective values
-void wxCairoMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
+void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
wxDouble tx, wxDouble ty)
{
cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
}
+// gets the component valuess of the matrix
+void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b, wxDouble* c,
+ wxDouble* d, wxDouble* tx, wxDouble* ty) const
+{
+ if (a) *a = m_matrix.xx;
+ if (b) *b = m_matrix.yx;
+ if (c) *c = m_matrix.xy;
+ if (d) *d = m_matrix.yy;
+ if (tx) *tx= m_matrix.x0;
+ if (ty) *ty= m_matrix.y0;
+}
+
// makes this the inverse matrix
-void wxCairoMatrix::Invert()
+void wxCairoMatrixData::Invert()
{
cairo_matrix_invert( &m_matrix );
}
// returns true if the elements of the transformation matrix are equal ?
-bool wxCairoMatrix::IsEqual( const wxGraphicsMatrix* t) const
+bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
{
const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
return (
}
// return true if this is the identity matrix
-bool wxCairoMatrix::IsIdentity()
+bool wxCairoMatrixData::IsIdentity() const
{
return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
//
// add the translation to this matrix
-void wxCairoMatrix::Translate( wxDouble dx , wxDouble dy )
+void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
{
cairo_matrix_translate( &m_matrix, dx, dy) ;
}
// add the scale to this matrix
-void wxCairoMatrix::Scale( wxDouble xScale , wxDouble yScale )
+void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
{
cairo_matrix_scale( &m_matrix, xScale, yScale) ;
}
// add the rotation to this matrix (radians)
-void wxCairoMatrix::Rotate( wxDouble angle )
+void wxCairoMatrixData::Rotate( wxDouble angle )
{
cairo_matrix_rotate( &m_matrix, angle) ;
}
//
// applies that matrix to the point
-void wxCairoMatrix::TransformPoint( wxDouble *x, wxDouble *y )
+void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
{
double lx = *x, ly = *y ;
cairo_matrix_transform_point( &m_matrix, &lx, &ly);
}
// applies the matrix except for translations
-void wxCairoMatrix::TransformDistance( wxDouble *dx, wxDouble *dy )
+void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
{
double lx = *dx, ly = *dy ;
cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
}
// returns the native representation
-void * wxCairoMatrix::GetNativeMatrix() const
+void * wxCairoMatrixData::GetNativeMatrix() const
{
return (void*) &m_matrix;
}
}
-void wxCairoContext::Clip( const wxRegion & WXUNUSED(region) )
+void wxCairoContext::Clip( const wxRegion& region )
{
-// TODO
+ // Create a path with all the rectangles in the region
+ wxGraphicsPath path = GetRenderer()->CreatePath();
+ wxRegionIterator ri(region);
+ while (ri)
+ {
+ path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
+ ri++;
+ }
+
+ // Put it in the context
+ cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
+ cairo_append_path(m_context, cp);
+
+ // clip to that path
+ cairo_clip(m_context);
+ path.UnGetNativePath(cp);
}
void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
-// TODO
+ // Create a path with this rectangle
+ wxGraphicsPath path = GetRenderer()->CreatePath();
+ path.AddRectangle(x,y,w,h);
+
+ // Put it in the context
+ cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
+ cairo_append_path(m_context, cp);
+
+ // clip to that path
+ cairo_clip(m_context);
+ path.UnGetNativePath(cp);
}
void wxCairoContext::ResetClip()
{
-// TODO
+ cairo_reset_clip(m_context);
}
-void wxCairoContext::StrokePath( const wxGraphicsPath *path )
+void wxCairoContext::StrokePath( const wxGraphicsPath& path )
{
if ( !m_pen.IsNull() )
{
- cairo_path_t* cp = (cairo_path_t*) path->GetNativePath() ;
+ cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
cairo_append_path(m_context,cp);
((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
cairo_stroke(m_context);
- wxConstCast(path, wxGraphicsPath)->UnGetNativePath(cp);
+ path.UnGetNativePath(cp);
}
}
-void wxCairoContext::FillPath( const wxGraphicsPath *path , int fillStyle )
+void wxCairoContext::FillPath( const wxGraphicsPath& path , int fillStyle )
{
if ( !m_brush.IsNull() )
{
- cairo_path_t* cp = (cairo_path_t*) path->GetNativePath() ;
+ cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
cairo_append_path(m_context,cp);
((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
cairo_fill(m_context);
- wxConstCast(path, wxGraphicsPath)->UnGetNativePath(cp);
+ path.UnGetNativePath(cp);
}
}
}
// concatenates this transform with the current transform of this context
-void wxCairoContext::ConcatTransform( const wxGraphicsMatrix* matrix )
+void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
{
- cairo_transform(m_context,(const cairo_matrix_t *) matrix->GetNativeMatrix());
+ cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
}
// sets the transform of this context
-void wxCairoContext::SetTransform( const wxGraphicsMatrix* matrix )
+void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
{
- cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix->GetNativeMatrix());
+ cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
}
// gets the matrix of this context
-void wxCairoContext::GetTransform( wxGraphicsMatrix* matrix )
+wxGraphicsMatrix wxCairoContext::GetTransform() const
{
- cairo_get_matrix(m_context,(cairo_matrix_t*) matrix->GetNativeMatrix());
+ wxGraphicsMatrix matrix = CreateMatrix();
+ cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
+ return matrix;
}
void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
- /*
- Bitmap* image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());
- m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
- delete image ;
- */
+ wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
+
+ cairo_surface_t* surface;
+ int bw = bmp.GetWidth();
+ int bh = bmp.GetHeight();
+ wxBitmap bmpSource = bmp; // we need a non-const instance
+ unsigned char* buffer = new unsigned char[bw*bh*4];
+ wxUint32* data = (wxUint32*)buffer;
+
+ // Create a surface object and copy the bitmap pixel data to it. if the
+ // image has alpha (or a mask represented as alpha) then we'll use a
+ // different format and iterator than if it doesn't...
+ if (bmpSource.HasAlpha() || bmpSource.GetMask())
+ {
+ surface = cairo_image_surface_create_for_data(
+ buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
+ wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
+
+ wxAlphaPixelData::Iterator p(pixData);
+ for (int y=0; y<bh; y++)
+ {
+ wxAlphaPixelData::Iterator rowStart = p;
+ for (int x=0; x<bw; x++)
+ {
+ // Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
+ // with alpha in the upper 8 bits, then red, then green, then
+ // blue. The 32-bit quantities are stored native-endian.
+ // Pre-multiplied alpha is used.
+ unsigned char alpha = p.Alpha();
+ if (alpha == 0)
+ *data = 0;
+ else
+ *data = ( alpha << 24
+ | (p.Red() * alpha/255) << 16
+ | (p.Green() * alpha/255) << 8
+ | (p.Blue() * alpha/255) );
+ ++data;
+ ++p;
+ }
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+ }
+ else // no alpha
+ {
+ surface = cairo_image_surface_create_for_data(
+ buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
+ wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
+
+ wxNativePixelData::Iterator p(pixData);
+ for (int y=0; y<bh; y++)
+ {
+ wxNativePixelData::Iterator rowStart = p;
+ for (int x=0; x<bw; x++)
+ {
+ // Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
+ // the upper 8 bits unused. Red, Green, and Blue are stored in
+ // the remaining 24 bits in that order. The 32-bit quantities
+ // are stored native-endian.
+ *data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
+ ++data;
+ ++p;
+ }
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+ }
+
+
+ PushState();
+
+ // In case we're scaling the image by using a width and height different
+ // than the bitmap's size create a pattern transformation on the surface and
+ // draw the transformed pattern.
+ cairo_pattern_t* pattern = cairo_pattern_create_for_surface(surface);
+ wxDouble scaleX = w / bw;
+ wxDouble scaleY = h / bh;
+ cairo_scale(m_context, scaleX, scaleY);
+
+ // prepare to draw the image
+ cairo_translate(m_context, x, y);
+ cairo_set_source(m_context, pattern);
+ // use the original size here since the context is scaled already...
+ cairo_rectangle(m_context, 0, 0, bw, bh);
+ // fill the rectangle using the pattern
+ cairo_fill(m_context);
+
+ // clean up
+ cairo_pattern_destroy(pattern);
+ cairo_surface_destroy(surface);
+ delete [] buffer;
+ PopState();
}
void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
- /*
- Bitmap* image = Bitmap::FromHICON((HICON)icon.GetHICON());
- m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
- delete image ;
- */
+ // An icon is a bitmap on wxGTK, so do this the easy way. When we want to
+ // start using the Cairo backend on other platforms then we may need to
+ // fiddle with this...
+ DrawBitmap(icon, x, y, w, h);
}
void wxCairoContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
{
- if ( m_font.IsNull() || str.IsEmpty())
- return ;
- cairo_move_to(m_context,x,y);
- const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
+ if ( m_font.IsNull() || str.empty())
+ return;
+
((wxCairoFontData*)m_font.GetRefData())->Apply(this);
+
+ // Cairo's x,y for drawing text is at the baseline, so we need to adjust
+ // the position we move to by the ascent.
+ cairo_font_extents_t fe;
+ cairo_font_extents(m_context, &fe);
+ cairo_move_to(m_context, x, y+fe.ascent);
+
+ const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
cairo_show_text(m_context,buf);
}
void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
wxDouble *descent, wxDouble *externalLeading ) const
{
- // TODO
+ if ( m_font.IsNull() || str.empty())
+ return;
+
+ ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this);
+
+ if (width)
+ {
+ const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
+ cairo_text_extents_t te;
+ cairo_text_extents(m_context, buf, &te);
+ *width = te.width;
+ }
+
+ if (height || descent || externalLeading)
+ {
+ cairo_font_extents_t fe;
+ cairo_font_extents(m_context, &fe);
+
+ if (height)
+ *height = fe.height;
+ if ( descent )
+ *descent = fe.descent;
+ if ( externalLeading )
+ *externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
+ }
}
void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
+#ifdef __WXMSW__
+ virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
+#endif
+
virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
virtual wxGraphicsContext * CreateContext( wxWindow* window );
+ virtual wxGraphicsContext * CreateMeasuringContext();
+
// Path
- virtual wxGraphicsPath * CreatePath();
+ virtual wxGraphicsPath CreatePath();
// Matrix
- virtual wxGraphicsMatrix * CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
+ virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
wxDouble tx=0.0, wxDouble ty=0.0);
return new wxCairoContext(this,dc);
}
+#ifdef __WXMSW__
+wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
+{
+ return NULL;
+}
+#endif
+
wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
{
return new wxCairoContext(this,(cairo_t*)context);
#endif
}
+wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
+{
+ return NULL;
+ // TODO
+}
+
wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
{
return new wxCairoContext(this, window );
// Path
-wxGraphicsPath * wxCairoRenderer::CreatePath()
+wxGraphicsPath wxCairoRenderer::CreatePath()
{
- return new wxCairoPath( this );
+ wxGraphicsPath path;
+ path.SetRefData( new wxCairoPathData(this) );
+ return path;
}
// Matrix
-wxGraphicsMatrix * wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
- wxDouble tx, wxDouble ty)
+wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
+ wxDouble tx, wxDouble ty)
{
- wxCairoMatrix* m = new wxCairoMatrix( this );
- m->Set( a,b,c,d,tx,ty ) ;
+ wxGraphicsMatrix m;
+ wxCairoMatrixData* data = new wxCairoMatrixData( this );
+ data->Set( a,b,c,d,tx,ty ) ;
+ m.SetRefData(data);
return m;
}
projects / wxWidgets.git / blobdiff