+ switch ( brush.GetStyle() )
+ {
+ case wxBRUSHSTYLE_STIPPLE:
+ case wxBRUSHSTYLE_STIPPLE_MASK:
+ case wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE:
+ InitStipple(brush.GetStipple());
+ break;
+
+ default:
+ if ( brush.IsHatch() )
+ InitHatch(static_cast<wxHatchStyle>(brush.GetStyle()));
+ break;
+ }
+}
+
+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_pattern,
+ stop.GetPosition(),
+ col.Red()/255.0,
+ col.Green()/255.0,
+ col.Blue()/255.0,
+ col.Alpha()/255.0
+ );
+ }
+
+ wxASSERT_MSG(cairo_pattern_status(m_pattern) == CAIRO_STATUS_SUCCESS,
+ wxT("Couldn't create cairo pattern"));
+}
+
+void
+wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
+ wxDouble x2, wxDouble y2,
+ const wxGraphicsGradientStops& stops)
+{
+ m_pattern = cairo_pattern_create_linear(x1,y1,x2,y2);
+
+ AddGradientStops(stops);
+}
+
+void
+wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
+ wxDouble xc, wxDouble yc,
+ wxDouble radius,
+ const wxGraphicsGradientStops& stops)
+{
+ m_pattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
+
+ AddGradientStops(stops);
+}
+
+void wxCairoBrushData::Init()
+{
+ m_pattern = NULL;
+ m_bmpdata = NULL;
+}
+
+//-----------------------------------------------------------------------------
+// wxCairoFontData implementation
+//-----------------------------------------------------------------------------
+
+void wxCairoFontData::InitColour(const wxColour& col)
+{
+ m_red = col.Red()/255.0;
+ m_green = col.Green()/255.0;
+ m_blue = col.Blue()/255.0;
+ m_alpha = col.Alpha()/255.0;
+}
+
+void
+wxCairoFontData::InitFontComponents(const wxString& facename,
+ cairo_font_slant_t slant,
+ cairo_font_weight_t weight)
+{
+ m_fontName = facename.mb_str(wxConvUTF8);
+ m_slant = slant;
+ m_weight = weight;
+}
+
+wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
+ const wxColour& col )
+ : wxGraphicsObjectRefData(renderer)
+#ifdef __WXGTK__
+ , m_wxfont(font)
+#endif
+{
+ InitColour(col);
+
+ m_size = font.GetPointSize();
+
+#ifdef __WXMAC__
+ m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
+#elif defined(__WXGTK__)
+#else
+ InitFontComponents
+ (
+ font.GetFaceName(),
+ font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC
+ : CAIRO_FONT_SLANT_NORMAL,
+ font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD
+ : CAIRO_FONT_WEIGHT_NORMAL
+ );
+#endif
+}
+
+wxCairoFontData::wxCairoFontData(wxGraphicsRenderer* renderer,
+ double sizeInPixels,
+ const wxString& facename,
+ int flags,
+ const wxColour& col) :
+ wxGraphicsObjectRefData(renderer)
+{
+ InitColour(col);
+
+ // Resolution for Cairo image surfaces is 72 DPI meaning that the sizes in
+ // points and pixels are identical, so we can just pass the size in pixels
+ // directly to cairo_set_font_size().
+ m_size = sizeInPixels;
+
+#if defined(__WXMAC__)
+ m_font = NULL;
+#endif
+
+ // There is no need to set m_underlined under wxGTK in this case, it can
+ // only be used if m_font != NULL.
+
+ InitFontComponents
+ (
+ facename,
+ flags & wxFONTFLAG_ITALIC ? CAIRO_FONT_SLANT_ITALIC
+ : CAIRO_FONT_SLANT_NORMAL,
+ flags & wxFONTFLAG_BOLD ? CAIRO_FONT_WEIGHT_BOLD
+ : CAIRO_FONT_WEIGHT_NORMAL
+ );
+}
+
+wxCairoFontData::~wxCairoFontData()
+{
+#ifdef __WXMAC__
+ if ( m_font )
+ cairo_font_face_destroy( m_font );
+#endif
+}
+
+bool wxCairoFontData::Apply( wxGraphicsContext* context )
+{
+ cairo_t * ctext = (cairo_t*) context->GetNativeContext();
+ cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
+#ifdef __WXGTK__
+ if (m_wxfont.IsOk())
+ {
+ // Nothing to do, the caller uses Pango layout functions to do
+ // everything.
+ return true;
+ }
+#elif defined(__WXMAC__)
+ if ( m_font )
+ {
+ cairo_set_font_face(ctext, m_font);
+ cairo_set_font_size(ctext, m_size );
+ return true;
+ }
+#endif
+
+ // If we get here, we must be on a platform without native font support or
+ // we're using toy Cairo API even under wxGTK/wxMac.
+ cairo_select_font_face(ctext, m_fontName, m_slant, m_weight );
+ cairo_set_font_size(ctext, m_size );
+
+ // Indicate that we don't use native fonts for the platforms which care
+ // about this (currently only wxGTK).
+ return false;
+}
+
+//-----------------------------------------------------------------------------
+// wxCairoPathData implementation
+//-----------------------------------------------------------------------------
+
+wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
+ : wxGraphicsPathData(renderer)
+{
+ if (pathcontext)
+ {
+ m_pathContext = pathcontext;
+ }
+ else
+ {
+ cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
+ m_pathContext = cairo_create(surface);
+ cairo_surface_destroy (surface);
+ }
+}
+
+wxCairoPathData::~wxCairoPathData()
+{
+ cairo_destroy(m_pathContext);
+}
+
+wxGraphicsObjectRefData *wxCairoPathData::Clone() const
+{
+ cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
+ cairo_t* pathcontext = cairo_create(surface);
+ cairo_surface_destroy (surface);
+
+ cairo_path_t* path = cairo_copy_path(m_pathContext);
+ cairo_append_path(pathcontext, path);
+ cairo_path_destroy(path);
+ return new wxCairoPathData( GetRenderer() ,pathcontext);
+}
+
+
+void* wxCairoPathData::GetNativePath() const
+{
+ return cairo_copy_path(m_pathContext) ;
+}
+
+void wxCairoPathData::UnGetNativePath(void *p) const
+{
+ cairo_path_destroy((cairo_path_t*)p);
+}
+
+//
+// The Primitives
+//
+
+void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
+{
+ cairo_move_to(m_pathContext,x,y);
+}
+
+void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
+{
+ cairo_line_to(m_pathContext,x,y);
+}
+
+void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
+{
+ cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
+ cairo_append_path(m_pathContext, p);
+ UnGetNativePath(p);
+}
+
+void wxCairoPathData::CloseSubpath()
+{
+ cairo_close_path(m_pathContext);
+}
+
+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 wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
+{
+ double dx,dy;
+ cairo_get_current_point(m_pathContext,&dx,&dy);
+ if (x)
+ *x = dx;
+ if (y)
+ *y = dy;
+}
+
+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
+ // real device trans
+ if ( clockwise||(endAngle-startAngle)>=2*M_PI)
+ cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
+ else
+ cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
+}
+
+// transforms each point of this path by the 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
+ cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
+ cairo_matrix_invert( &m );
+ cairo_transform(m_pathContext,&m);
+}
+
+// gets the bounding box enclosing all points (possibly including control points)
+void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
+{
+ double x1,y1,x2,y2;
+
+ cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
+ if ( x2 < x1 )
+ {
+ *x = x2;
+ *w = x1-x2;
+ }
+ else
+ {
+ *x = x1;
+ *w = x2-x1;
+ }
+
+ if( y2 < y1 )
+ {
+ *y = y2;
+ *h = y1-y2;
+ }
+ else
+ {
+ *y = y1;
+ *h = y2-y1;
+ }
+}
+
+bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
+{
+ 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;
+}
+
+//-----------------------------------------------------------------------------
+// wxCairoMatrixData implementation
+//-----------------------------------------------------------------------------
+
+wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
+ : wxGraphicsMatrixData(renderer)
+{
+ if ( matrix )
+ m_matrix = *matrix;
+}
+
+wxCairoMatrixData::~wxCairoMatrixData()
+{
+ // nothing to do
+}
+
+wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
+{
+ return new wxCairoMatrixData(GetRenderer(),&m_matrix);
+}
+
+// concatenates the matrix
+void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
+{
+ cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
+}
+
+// sets the matrix to the respective values
+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 wxCairoMatrixData::Invert()
+{
+ cairo_matrix_invert( &m_matrix );
+}
+
+// returns true if the elements of the transformation matrix are equal ?
+bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
+{
+ const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
+ return (
+ m_matrix.xx == tm->xx &&
+ m_matrix.yx == tm->yx &&
+ m_matrix.xy == tm->xy &&
+ m_matrix.yy == tm->yy &&
+ m_matrix.x0 == tm->x0 &&
+ m_matrix.y0 == tm->y0 ) ;
+}
+
+// return true if this is the identity matrix
+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);
+}
+
+//
+// transformation
+//
+
+// add the translation to this matrix
+void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
+{
+ cairo_matrix_translate( &m_matrix, dx, dy) ;
+}
+
+// add the scale to this matrix
+void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
+{
+ cairo_matrix_scale( &m_matrix, xScale, yScale) ;
+}
+
+// add the rotation to this matrix (radians)
+void wxCairoMatrixData::Rotate( wxDouble angle )
+{
+ cairo_matrix_rotate( &m_matrix, angle) ;
+}
+
+//
+// apply the transforms
+//
+
+// applies that matrix to the point
+void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
+{
+ double lx = *x, ly = *y ;
+ cairo_matrix_transform_point( &m_matrix, &lx, &ly);
+ *x = lx;
+ *y = ly;
+}
+
+// applies the matrix except for translations
+void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
+{
+ double lx = *dx, ly = *dy ;
+ cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
+ *dx = lx;
+ *dy = ly;
+}
+
+// returns the native representation
+void * wxCairoMatrixData::GetNativeMatrix() const
+{
+ return (void*) &m_matrix;
+}
+
+// ----------------------------------------------------------------------------
+// wxCairoBitmap implementation
+// ----------------------------------------------------------------------------
+
+int wxCairoBitmapData::InitBuffer(int width, int height, cairo_format_t format)
+{
+ wxUnusedVar(format); // Only really unused with Cairo < 1.6.
+
+ // Determine the stride: use cairo_format_stride_for_width() if available
+ // but fall back to 4*width for the earlier versions as this is what that
+ // function always returns, even in latest Cairo, anyhow.
+ int stride;
+#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 6, 0)
+ if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 6, 0) )
+ {
+ stride = cairo_format_stride_for_width(format, width);
+
+ // All our code would totally break if stride were not a multiple of 4
+ // so ensure this is the case.
+ if ( stride % 4 )
+ {
+ wxFAIL_MSG("Unexpected Cairo image surface stride.");
+
+ stride += 4 - stride % 4;
+ }
+ }
+ else
+#endif
+ stride = 4*width;
+
+ m_width = width;
+ m_height = height;
+ m_buffer = new unsigned char[height*stride];
+
+ return stride;
+}
+
+void wxCairoBitmapData::InitSurface(cairo_format_t format, int stride)
+{
+ m_surface = cairo_image_surface_create_for_data(
+ m_buffer, format, m_width, m_height, stride);
+ m_pattern = cairo_pattern_create_for_surface(m_surface);
+}
+
+wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
+ wxGraphicsBitmapData( renderer )
+{
+ m_surface = bitmap;
+ m_pattern = cairo_pattern_create_for_surface(m_surface);
+}
+
+wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsBitmapData( renderer )
+{
+ wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
+
+#ifdef wxHAS_RAW_BITMAP
+ // 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...
+ cairo_format_t bufferFormat = bmp.GetDepth() == 32
+#if defined(__WXGTK__) && !defined(__WXGTK3__)
+ || bmp.GetMask()
+#endif
+ ? CAIRO_FORMAT_ARGB32
+ : CAIRO_FORMAT_RGB24;
+
+ int stride = InitBuffer(bmp.GetWidth(), bmp.GetHeight(), bufferFormat);
+
+ wxBitmap bmpSource = bmp; // we need a non-const instance
+ wxUint32* data = (wxUint32*)m_buffer;
+
+ if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
+ {
+ // use the bitmap's alpha
+ wxAlphaPixelData
+ pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
+ wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
+
+ wxAlphaPixelData::Iterator p(pixData);
+ for (int y=0; y<m_height; y++)
+ {
+ wxAlphaPixelData::Iterator rowStart = p;
+ wxUint32* const rowStartDst = data;
+ for (int x=0; x<m_width; 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;
+ }
+
+ data = rowStartDst + stride / 4;
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+ }
+ else // no alpha
+ {
+ wxNativePixelData
+ pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
+ wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
+
+ wxNativePixelData::Iterator p(pixData);
+ for (int y=0; y<m_height; y++)
+ {
+ wxNativePixelData::Iterator rowStart = p;
+ wxUint32* const rowStartDst = data;
+ for (int x=0; x<m_width; 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;
+ }
+
+ data = rowStartDst + stride / 4;
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+ }
+#if defined(__WXMSW__) || defined(__WXGTK3__)
+ // if there is a mask, set the alpha bytes in the target buffer to
+ // fully transparent or fully opaque
+ if (bmpSource.GetMask())
+ {
+ wxBitmap bmpMask = bmpSource.GetMask()->GetBitmap();
+ bufferFormat = CAIRO_FORMAT_ARGB32;
+ data = (wxUint32*)m_buffer;
+ wxNativePixelData
+ pixData(bmpMask, wxPoint(0, 0), wxSize(m_width, m_height));
+ wxCHECK_RET( pixData, wxT("Failed to gain raw access to mask data."));
+
+ wxNativePixelData::Iterator p(pixData);
+ for (int y=0; y<m_height; y++)
+ {
+ wxNativePixelData::Iterator rowStart = p;
+ wxUint32* const rowStartDst = data;
+ for (int x=0; x<m_width; x++)
+ {
+ if (p.Red()+p.Green()+p.Blue() == 0)
+ *data = 0;
+ else
+ *data = (wxALPHA_OPAQUE << 24) | (*data & 0x00FFFFFF);
+ ++data;
+ ++p;
+ }
+
+ data = rowStartDst + stride / 4;
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+ }
+#endif
+
+ InitSurface(bufferFormat, stride);
+#endif // wxHAS_RAW_BITMAP
+}
+
+#if wxUSE_IMAGE
+
+// Helper functions for dealing with alpha pre-multiplication.
+namespace
+{
+
+inline unsigned char Premultiply(unsigned char alpha, unsigned char data)
+{
+ return alpha ? (data * alpha)/0xff : data;
+}
+
+inline unsigned char Unpremultiply(unsigned char alpha, unsigned char data)
+{
+ return alpha ? (data * 0xff)/alpha : data;
+}
+
+} // anonymous namespace
+
+wxCairoBitmapData::wxCairoBitmapData(wxGraphicsRenderer* renderer,
+ const wxImage& image)
+ : wxGraphicsBitmapData(renderer)
+{
+ const cairo_format_t bufferFormat = image.HasAlpha()
+ ? CAIRO_FORMAT_ARGB32
+ : CAIRO_FORMAT_RGB24;
+
+ int stride = InitBuffer(image.GetWidth(), image.GetHeight(), bufferFormat);
+
+ // Copy wxImage data into the buffer. Notice that we work with wxUint32
+ // values and not bytes becase Cairo always works with buffers in native
+ // endianness.
+ wxUint32* dst = reinterpret_cast<wxUint32*>(m_buffer);
+ const unsigned char* src = image.GetData();
+
+ if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
+ {
+ const unsigned char* alpha = image.GetAlpha();
+
+ for ( int y = 0; y < m_height; y++ )
+ {
+ wxUint32* const rowStartDst = dst;
+
+ for ( int x = 0; x < m_width; x++ )
+ {
+ const unsigned char a = *alpha++;
+
+ *dst++ = a << 24 |
+ Premultiply(a, src[0]) << 16 |
+ Premultiply(a, src[1]) << 8 |
+ Premultiply(a, src[2]);
+ src += 3;
+ }
+
+ dst = rowStartDst + stride / 4;
+ }
+ }
+ else // RGB
+ {
+ for ( int y = 0; y < m_height; y++ )
+ {
+ wxUint32* const rowStartDst = dst;
+
+ for ( int x = 0; x < m_width; x++ )
+ {
+ *dst++ = src[0] << 16 |
+ src[1] << 8 |
+ src[2];
+ src += 3;
+ }
+
+ dst = rowStartDst + stride / 4;
+ }
+ }
+
+ InitSurface(bufferFormat, stride);
+}
+
+wxImage wxCairoBitmapData::ConvertToImage() const
+{
+ wxImage image(m_width, m_height, false /* don't clear */);
+
+ // Get the surface type and format.
+ wxCHECK_MSG( cairo_surface_get_type(m_surface) == CAIRO_SURFACE_TYPE_IMAGE,
+ wxNullImage,
+ wxS("Can't convert non-image surface to image.") );
+
+ switch ( cairo_image_surface_get_format(m_surface) )
+ {
+ case CAIRO_FORMAT_ARGB32:
+ image.SetAlpha();
+ break;
+
+ case CAIRO_FORMAT_RGB24:
+ // Nothing to do, we don't use alpha by default.
+ break;
+
+ case CAIRO_FORMAT_A8:
+ case CAIRO_FORMAT_A1:
+ wxFAIL_MSG(wxS("Unsupported Cairo image surface type."));
+ return wxNullImage;
+
+ default:
+ wxFAIL_MSG(wxS("Unknown Cairo image surface type."));
+ return wxNullImage;
+ }
+
+ // Prepare for copying data.
+ const wxUint32* src = (wxUint32*)cairo_image_surface_get_data(m_surface);
+ wxCHECK_MSG( src, wxNullImage, wxS("Failed to get Cairo surface data.") );
+
+ int stride = cairo_image_surface_get_stride(m_surface);
+ wxCHECK_MSG( stride > 0, wxNullImage,
+ wxS("Failed to get Cairo surface stride.") );
+
+ // As we work with wxUint32 pointers and not char ones, we need to adjust
+ // the stride accordingly. This should be lossless as the stride must be a
+ // multiple of pixel size.
+ wxASSERT_MSG( !(stride % sizeof(wxUint32)), wxS("Unexpected stride.") );
+ stride /= sizeof(wxUint32);
+
+ unsigned char* dst = image.GetData();
+ unsigned char *alpha = image.GetAlpha();
+ if ( alpha )
+ {
+ // We need to also copy alpha and undo the pre-multiplication as Cairo
+ // stores pre-multiplied values in this format while wxImage does not.
+ for ( int y = 0; y < m_height; y++ )
+ {
+ const wxUint32* const rowStart = src;
+ for ( int x = 0; x < m_width; x++ )
+ {
+ const wxUint32 argb = *src++;
+
+ *alpha++ = (argb & 0xff000000) >> 24;
+
+ // Copy the RGB data undoing the pre-multiplication.
+ *dst++ = Unpremultiply(*alpha, (argb & 0x00ff0000) >> 16);
+ *dst++ = Unpremultiply(*alpha, (argb & 0x0000ff00) >> 8);
+ *dst++ = Unpremultiply(*alpha, (argb & 0x000000ff));
+ }
+
+ src = rowStart + stride;
+ }
+ }
+ else // RGB
+ {
+ // Things are pretty simple in this case, just copy RGB bytes.
+ for ( int y = 0; y < m_height; y++ )
+ {
+ const wxUint32* const rowStart = src;
+ for ( int x = 0; x < m_width; x++ )
+ {
+ const wxUint32 argb = *src++;
+
+ *dst++ = (argb & 0x00ff0000) >> 16;
+ *dst++ = (argb & 0x0000ff00) >> 8;
+ *dst++ = (argb & 0x000000ff);
+ }
+
+ src = rowStart + stride;
+ }
+ }
+
+ return image;
+}
+
+#endif // wxUSE_IMAGE
+
+wxCairoBitmapData::~wxCairoBitmapData()
+{
+ if (m_pattern)
+ cairo_pattern_destroy(m_pattern);
+
+ if (m_surface)
+ cairo_surface_destroy(m_surface);
+
+ delete [] m_buffer;
+}
+
+//-----------------------------------------------------------------------------
+// wxCairoContext implementation
+//-----------------------------------------------------------------------------
+
+class wxCairoOffsetHelper
+{
+public :
+ wxCairoOffsetHelper( cairo_t* ctx , bool offset )
+ {
+ m_ctx = ctx;
+ m_offset = offset;
+ if ( m_offset )
+ cairo_translate( m_ctx, 0.5, 0.5 );
+ }
+ ~wxCairoOffsetHelper( )
+ {
+ if ( m_offset )
+ cairo_translate( m_ctx, -0.5, -0.5 );
+ }
+public :
+ cairo_t* m_ctx;
+ bool m_offset;
+} ;
+
+wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
+: wxGraphicsContext(renderer)
+{
+#ifdef __WXMSW__
+ // wxMSW contexts always use MM_ANISOTROPIC, which messes up
+ // text rendering when printing using Cairo. Switch it to MM_TEXT
+ // map mode to avoid this problem.
+ HDC hdc = (HDC)dc.GetHDC();
+ ::SetMapMode(hdc, MM_TEXT);
+ m_mswSurface = cairo_win32_printing_surface_create(hdc);
+ Init( cairo_create(m_mswSurface) );
+#endif
+
+#ifdef __WXGTK20__
+ const wxDCImpl *impl = dc.GetImpl();
+ Init( (cairo_t*) impl->GetCairoContext() );
+#endif
+ wxSize sz = dc.GetSize();
+ m_width = sz.x;
+ m_height = sz.y;
+
+ wxPoint org = dc.GetDeviceOrigin();
+ cairo_translate( m_context, org.x, org.y );
+
+ double sx,sy;
+ dc.GetUserScale( &sx, &sy );
+
+// TODO: Determine if these fixes are needed on other platforms too.
+// On MSW, without this the printer context will not respect wxDC SetMapMode calls.
+// For example, using dc.SetMapMode(wxMM_POINTS) can let us share printer and screen
+// drawing code
+#ifdef __WXMSW__
+ double lsx,lsy;
+ dc.GetLogicalScale( &lsx, &lsy );
+ sx *= lsx;
+ sy *= lsy;
+#endif
+ cairo_scale( m_context, sx, sy );
+
+ org = dc.GetLogicalOrigin();
+ cairo_translate( m_context, -org.x, -org.y );
+}
+
+wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
+: wxGraphicsContext(renderer)
+{
+ int width, height;
+ dc.GetSize( &width, &height );
+ m_width = width;
+ m_height = height;
+
+ m_enableOffset = true;
+
+#ifdef __WXMSW__
+ m_mswSurface = cairo_win32_surface_create((HDC)dc.GetHDC());
+ Init( cairo_create(m_mswSurface) );
+#endif
+
+#ifdef __WXGTK3__
+ cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
+ if (cr)
+ Init(cr);
+#elif defined __WXGTK20__
+ wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
+ Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
+
+#if 0
+ wxGraphicsMatrix matrix = CreateMatrix();
+
+ wxPoint org = dc.GetDeviceOrigin();
+ matrix.Translate( org.x, org.y );
+
+ org = dc.GetLogicalOrigin();
+ matrix.Translate( -org.x, -org.y );
+
+ double sx,sy;
+ dc.GetUserScale( &sx, &sy );
+ matrix.Scale( sx, sy );
+
+ ConcatTransform( matrix );
+#endif
+#endif
+
+#ifdef __WXMAC__
+ CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
+ cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
+ Init( cairo_create( surface ) );
+ cairo_surface_destroy( surface );
+#endif
+}
+
+wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
+: wxGraphicsContext(renderer)
+{
+ int width, height;
+ dc.GetSize( &width, &height );
+ m_width = width;
+ m_height = height;
+
+ m_enableOffset = true;
+
+#ifdef __WXMSW__
+
+ HDC hdc = (HDC)dc.GetHDC();
+
+ HBITMAP bitmap = (HBITMAP)GetCurrentObject(hdc, OBJ_BITMAP);
+
+ BITMAP info;
+ bool hasBitmap = false;
+
+ // cairo_win32_surface_create creates a 24-bit bitmap,
+ // so if we have alpha, we need to create a 32-bit surface instead.
+ if (!GetObject(bitmap, sizeof(info), &info) || info.bmBitsPixel < 32)
+ m_mswSurface = cairo_win32_surface_create(hdc);
+ else {
+ hasBitmap = true;
+ m_mswSurface = cairo_image_surface_create_for_data((unsigned char*)info.bmBits,
+ CAIRO_FORMAT_ARGB32,
+ info.bmWidth,
+ info.bmHeight,
+ info.bmWidthBytes);
+ }
+
+ Init( cairo_create(m_mswSurface) );
+ // If we've created a image surface, we need to flip the Y axis so that
+ // all drawing will appear right side up.
+ if (hasBitmap) {
+ cairo_matrix_t matrix;
+ cairo_matrix_init(&matrix, 1.0, 0.0, 0.0, -1.0, 0.0, height);
+ cairo_set_matrix(m_context, &matrix);
+ }
+#endif
+
+#ifdef __WXGTK3__
+ cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
+ if (cr)
+ Init(cr);
+#elif defined __WXGTK20__
+ wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
+ Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
+
+#if 0
+ wxGraphicsMatrix matrix = CreateMatrix();
+
+ wxPoint org = dc.GetDeviceOrigin();
+ matrix.Translate( org.x, org.y );
+
+ org = dc.GetLogicalOrigin();
+ matrix.Translate( -org.x, -org.y );
+
+ double sx,sy;
+ dc.GetUserScale( &sx, &sy );
+ matrix.Scale( sx, sy );
+
+ ConcatTransform( matrix );
+#endif
+#endif
+
+#ifdef __WXMAC__
+ CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
+ cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
+ Init( cairo_create( surface ) );
+ cairo_surface_destroy( surface );
+#endif
+}
+
+#ifdef __WXGTK20__
+wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window )
+: wxGraphicsContext(renderer)
+{
+ Init( gdk_cairo_create( window ) );
+
+#ifdef __WXGTK3__
+ m_width = gdk_window_get_width(window);
+ m_height = gdk_window_get_height(window);
+#else
+ int width, height;
+ gdk_drawable_get_size(window, &width, &height);
+ m_width = width;
+ m_height = height;
+#endif
+}
+#endif
+
+#ifdef __WXMSW__
+wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
+: wxGraphicsContext(renderer)
+{
+ m_mswSurface = cairo_win32_surface_create(handle);
+ Init( cairo_create(m_mswSurface) );
+ m_width =
+ m_height = 0;
+}
+#endif
+
+
+wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
+: wxGraphicsContext(renderer)
+{
+ Init( context );
+ m_width =
+ m_height = 0;
+}
+
+wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
+ : wxGraphicsContext(renderer)
+#ifdef __WXMSW__
+ , m_mswWindowHDC(GetHwndOf(window))
+#endif
+{
+ m_enableOffset = true;
+#ifdef __WXGTK__
+ // something along these lines (copied from dcclient)
+
+ // Some controls don't have m_wxwindow - like wxStaticBox, but the user
+ // code should still be able to create wxClientDCs for them, so we will
+ // use the parent window here then.
+ if (window->m_wxwindow == NULL)
+ {
+ window = window->GetParent();
+ }
+
+ wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
+
+ Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
+
+ wxSize sz = window->GetSize();
+ m_width = sz.x;
+ m_height = sz.y;
+#endif
+
+#ifdef __WXMSW__
+ m_mswSurface = cairo_win32_surface_create((HDC)m_mswWindowHDC);
+ Init(cairo_create(m_mswSurface));
+#endif
+
+}
+
+wxCairoContext::wxCairoContext(wxGraphicsRenderer* renderer) :
+ wxGraphicsContext(renderer)
+{
+ m_context = NULL;
+}
+
+wxCairoContext::~wxCairoContext()
+{
+ if ( m_context )
+ {
+ PopState();
+ PopState();
+ cairo_destroy(m_context);
+ }
+#ifdef __WXMSW__
+ if ( m_mswSurface )
+ cairo_surface_destroy(m_mswSurface);
+#endif
+}
+
+void wxCairoContext::Init(cairo_t *context)
+{
+ m_context = context ;
+ PushState();
+ PushState();
+}
+
+
+void wxCairoContext::Clip( const wxRegion& region )
+{
+ // 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 )
+{
+ // 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()
+{
+ cairo_reset_clip(m_context);
+}
+
+
+void wxCairoContext::StrokePath( const wxGraphicsPath& path )
+{
+ if ( !m_pen.IsNull() )
+ {
+ wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
+ 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);
+ path.UnGetNativePath(cp);
+ }
+}
+
+void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
+{
+ if ( !m_brush.IsNull() )
+ {
+ wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
+ 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);
+ path.UnGetNativePath(cp);
+ }
+}
+
+void wxCairoContext::Rotate( wxDouble angle )
+{
+ cairo_rotate(m_context,angle);
+}
+
+void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
+{
+ cairo_translate(m_context,dx,dy);
+}
+
+void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
projects / wxWidgets.git / blobdiff