{
public:
wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
+ wxCairoFontData(wxGraphicsRenderer* renderer,
+ double sizeInPixels,
+ const wxString& facename,
+ int flags,
+ const wxColour& col);
~wxCairoFontData();
- virtual void Apply( wxGraphicsContext* context );
+ virtual bool Apply( wxGraphicsContext* context );
#ifdef __WXGTK__
const PangoFontDescription* GetFont() const { return m_font; }
bool GetUnderlined() const { return m_underlined; }
#endif
private :
+ void InitColour(const wxColour& col);
+ void InitFontComponents(const wxString& facename,
+ cairo_font_slant_t slant,
+ cairo_font_weight_t weight);
+
double m_size;
- bool m_underlined;
double m_red;
double m_green;
double m_blue;
cairo_font_face_t *m_font;
#elif defined(__WXGTK__)
PangoFontDescription* m_font;
-#else
+ bool m_underlined;
+#endif
+
+ // These members are used when the font is created from its face name and
+ // flags (and not from wxFont) and also even when creating it from wxFont
+ // on the platforms not covered above.
+ //
+ // Notice that we can't use cairo_font_face_t instead of storing those,
+ // even though it would be simpler and need less #ifdefs, because
+ // cairo_toy_font_face_create() that we'd need to create it is only
+ // available in Cairo 1.8 and we require just 1.2 currently. If we do drop
+ // support for < 1.8 versions in the future it would be definitely better
+ // to use cairo_toy_font_face_create() instead.
wxCharBuffer m_fontName;
cairo_font_slant_t m_slant;
cairo_font_weight_t m_weight;
-#endif
};
class wxCairoBitmapData : public wxGraphicsObjectRefData
{
public:
wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
+#if wxUSE_IMAGE
+ wxCairoBitmapData(wxGraphicsRenderer* renderer, const wxImage& image);
+#endif // wxUSE_IMAGE
wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
~wxCairoBitmapData();
virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
virtual wxSize GetSize() { return wxSize(m_width, m_height); }
+
+#if wxUSE_IMAGE
+ wxImage ConvertToImage() const;
+#endif // wxUSE_IMAGE
+
private :
+ // Allocate m_buffer for the bitmap of the given size in the given format.
+ //
+ // Returns the stride used for the buffer.
+ int InitBuffer(int width, int height, cairo_format_t format);
+
+ // Really create the surface using the buffer (which was supposed to be
+ // filled since InitBuffer() call).
+ void InitSurface(cairo_format_t format, int stride);
+
+
cairo_surface_t* m_surface;
cairo_pattern_t* m_pattern;
int m_width;
#endif
wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
- wxCairoContext();
+
+ // If this ctor is used, Init() must be called by the derived class later.
+ wxCairoContext( wxGraphicsRenderer* renderer );
+
virtual ~wxCairoContext();
virtual bool ShouldOffset() const
protected:
virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
-private:
void Init(cairo_t *context);
+private:
cairo_t* m_context;
wxVector<float> m_layerOpacities;
wxDECLARE_NO_COPY_CLASS(wxCairoContext);
};
+#if wxUSE_IMAGE
+// ----------------------------------------------------------------------------
+// wxCairoImageContext: context associated with a wxImage.
+// ----------------------------------------------------------------------------
+
+class wxCairoImageContext : public wxCairoContext
+{
+public:
+ wxCairoImageContext(wxGraphicsRenderer* renderer, wxImage& image) :
+ wxCairoContext(renderer),
+ m_image(image),
+ m_data(renderer, image)
+ {
+ Init(cairo_create(m_data.GetCairoSurface()));
+ }
+
+ virtual ~wxCairoImageContext()
+ {
+ m_image = m_data.ConvertToImage();
+ }
+
+private:
+ wxImage& m_image;
+ wxCairoBitmapData m_data;
+
+ wxDECLARE_NO_COPY_CLASS(wxCairoImageContext);
+};
+#endif // wxUSE_IMAGE
+
//-----------------------------------------------------------------------------
// wxCairoPenData implementation
//-----------------------------------------------------------------------------
// wxCairoFontData implementation
//-----------------------------------------------------------------------------
-wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
- const wxColour& col ) : wxGraphicsObjectRefData(renderer)
+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)
+{
+ InitColour(col);
+
m_size = font.GetPointSize();
- m_underlined = font.GetUnderlined();
#ifdef __WXMAC__
m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
#elif defined(__WXGTK__)
m_font = pango_font_description_copy( font.GetNativeFontInfo()->description );
+ m_underlined = font.GetUnderlined();
#else
- m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
- m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
- m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
+ 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(__WXGTK__) || 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__
- cairo_font_face_destroy( m_font );
+ if ( m_font )
+ cairo_font_face_destroy( m_font );
#elif defined(__WXGTK__)
- pango_font_description_free( m_font );
+ if ( m_font )
+ pango_font_description_free( m_font );
#else
#endif
}
-void wxCairoFontData::Apply( wxGraphicsContext* context )
+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__
- // the rest is done using Pango layouts
+ if ( m_font )
+ {
+ // Nothing to do, the caller uses Pango layout functions to do
+ // everything.
+ return true;
+ }
#elif defined(__WXMAC__)
- cairo_set_font_face(ctext, m_font);
- cairo_set_font_size(ctext, m_size );
-#else
+ 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 );
-#endif
+
+ // Indicate that we don't use native fonts for the platforms which care
+ // about this (currently only wxGTK).
+ return false;
}
//-----------------------------------------------------------------------------
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 ) :
wxGraphicsObjectRefData( renderer )
wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
#ifdef wxHAS_RAW_BITMAP
- 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;
- cairo_format_t bufferFormat;
-
// 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.GetDepth() == 32
+ cairo_format_t bufferFormat = bmp.GetDepth() == 32
#ifdef __WXGTK__
- || bmpSource.GetMask()
+ || bmp.GetMask()
#endif
- )
- { // use the bitmap's alpha
- bufferFormat = CAIRO_FORMAT_ARGB32;
- wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ ? 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<bh; y++)
+ for (int y=0; y<m_height; y++)
{
wxAlphaPixelData::Iterator rowStart = p;
- for (int x=0; x<bw; x++)
+ 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
++data;
++p;
}
+
+ data = rowStartDst + stride / 4;
p = rowStart;
p.OffsetY(pixData, 1);
}
}
else // no alpha
{
- bufferFormat = CAIRO_FORMAT_RGB24;
- wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ 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<bh; y++)
+ for (int y=0; y<m_height; y++)
{
wxNativePixelData::Iterator rowStart = p;
- for (int x=0; x<bw; x++)
+ 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
++data;
++p;
}
+
+ data = rowStartDst + stride / 4;
p = rowStart;
p.OffsetY(pixData, 1);
}
wxBitmap bmpMask = bmpSource.GetMaskBitmap();
bufferFormat = CAIRO_FORMAT_ARGB32;
data = (wxUint32*)m_buffer;
- wxNativePixelData pixData(bmpMask, wxPoint(0,0), wxSize(bw, bh));
- wxCHECK_RET( pixData, wxT("Failed to gain raw access to mask bitmap data."));
+ 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<bh; y++)
+ for (int y=0; y<m_height; y++)
{
wxNativePixelData::Iterator rowStart = p;
- for (int x=0; x<bw; x++)
+ wxUint32* const rowStartDst = data;
+ for (int x=0; x<m_width; x++)
{
if (p.Red()+p.Green()+p.Blue() == 0)
*data = 0;
++data;
++p;
}
+
+ data = rowStartDst + stride / 4;
p = rowStart;
p.OffsetY(pixData, 1);
}
}
#endif
- m_surface = cairo_image_surface_create_for_data(
- m_buffer, bufferFormat, bw, bh, bw*4);
- m_pattern = cairo_pattern_create_for_surface(m_surface);
+ 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)
+ : wxGraphicsObjectRefData(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)
delete [] m_buffer;
}
-
-
//-----------------------------------------------------------------------------
// wxCairoContext implementation
//-----------------------------------------------------------------------------
}
+wxCairoContext::wxCairoContext(wxGraphicsRenderer* renderer) :
+ wxGraphicsContext(renderer)
+{
+ m_context = NULL;
+}
+
wxCairoContext::~wxCairoContext()
{
if ( m_context )
if ( !data )
return;
- ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
-
+ if ( ((wxCairoFontData*)m_font.GetRefData())->Apply(this) )
+ {
#ifdef __WXGTK__
- size_t datalen = strlen(data);
+ size_t datalen = strlen(data);
- PangoLayout *layout = pango_cairo_create_layout (m_context);
- wxCairoFontData* font_data = (wxCairoFontData*) m_font.GetRefData();
- pango_layout_set_font_description( layout, font_data->GetFont());
- pango_layout_set_text(layout, data, datalen);
+ PangoLayout *layout = pango_cairo_create_layout (m_context);
+ wxCairoFontData* font_data = (wxCairoFontData*) m_font.GetRefData();
+ pango_layout_set_font_description( layout, font_data->GetFont());
+ pango_layout_set_text(layout, data, datalen);
- if (font_data->GetUnderlined())
- {
- PangoAttrList *attrs = pango_attr_list_new();
- PangoAttribute *attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
- pango_attr_list_insert(attrs, attr);
- pango_layout_set_attributes(layout, attrs);
- pango_attr_list_unref(attrs);
- }
+ if (font_data->GetUnderlined())
+ {
+ PangoAttrList *attrs = pango_attr_list_new();
+ PangoAttribute *attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
+ pango_attr_list_insert(attrs, attr);
+ pango_layout_set_attributes(layout, attrs);
+ pango_attr_list_unref(attrs);
+ }
- cairo_move_to(m_context, x, y);
- pango_cairo_show_layout (m_context, layout);
+ cairo_move_to(m_context, x, y);
+ pango_cairo_show_layout (m_context, layout);
+
+ g_object_unref (layout);
+
+ // Don't use Cairo text API, we already did everything.
+ return;
+#endif
+ }
- g_object_unref (layout);
-#else
// 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_move_to(m_context, x, y+fe.ascent);
cairo_show_text(m_context, data);
-#endif
}
void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
if ( str.empty())
return;
+ if ( ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this) )
+ {
#ifdef __WXGTK__
- int w, h;
+ int w, h;
- PangoLayout *layout = pango_cairo_create_layout (m_context);
- pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
- const wxCharBuffer data = str.utf8_str();
- if ( !data )
- {
+ PangoLayout *layout = pango_cairo_create_layout (m_context);
+ pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
+ const wxCharBuffer data = str.utf8_str();
+ if ( !data )
+ {
+ return;
+ }
+ pango_layout_set_text( layout, data, strlen(data) );
+ pango_layout_get_pixel_size (layout, &w, &h);
+ if ( width )
+ *width = w;
+ if ( height )
+ *height = h;
+ if (descent)
+ {
+ PangoLayoutIter *iter = pango_layout_get_iter(layout);
+ int baseline = pango_layout_iter_get_baseline(iter);
+ pango_layout_iter_free(iter);
+ *descent = h - PANGO_PIXELS(baseline);
+ }
+ g_object_unref (layout);
return;
+#endif
}
- pango_layout_set_text( layout, data, strlen(data) );
- pango_layout_get_pixel_size (layout, &w, &h);
- if ( width )
- *width = w;
- if ( height )
- *height = h;
- if (descent)
- {
- PangoLayoutIter *iter = pango_layout_get_iter(layout);
- int baseline = pango_layout_iter_get_baseline(iter);
- pango_layout_iter_free(iter);
- *descent = h - PANGO_PIXELS(baseline);
- }
- g_object_unref (layout);
-#else
- ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this);
if (width)
{
if ( externalLeading )
*externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
}
-#endif
}
void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
+#if wxUSE_IMAGE
+ virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
+#endif // wxUSE_IMAGE
virtual wxGraphicsContext * CreateContext( wxWindow* window );
// sets the font
virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
+ virtual wxGraphicsFont CreateFont(double sizeInPixels,
+ const wxString& facename,
+ int flags = wxFONTFLAG_DEFAULT,
+ const wxColour& col = *wxBLACK);
// create a native bitmap representation
virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
+#if wxUSE_IMAGE
+ virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
+ virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp);
+#endif // wxUSE_IMAGE
// create a graphics bitmap from a native bitmap
virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
#endif
}
+#if wxUSE_IMAGE
+wxGraphicsContext * wxCairoRenderer::CreateContextFromImage(wxImage& image)
+{
+ return new wxCairoImageContext(this, image);
+}
+#endif // wxUSE_IMAGE
+
wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
{
ENSURE_LOADED_OR_RETURN(NULL);
return p;
}
-// sets the font
wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
{
ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
return wxNullGraphicsFont;
}
+wxGraphicsFont
+wxCairoRenderer::CreateFont(double sizeInPixels,
+ const wxString& facename,
+ int flags,
+ const wxColour& col)
+{
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsFont);
+
+ wxGraphicsFont font;
+ font.SetRefData(new wxCairoFontData(this, sizeInPixels, facename, flags, col));
+ return font;
+}
+
wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
{
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
return wxNullGraphicsBitmap;
}
+#if wxUSE_IMAGE
+
+wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromImage(const wxImage& image)
+{
+ wxGraphicsBitmap bmp;
+
+ ENSURE_LOADED_OR_RETURN(bmp);
+
+ if ( image.IsOk() )
+ {
+ bmp.SetRefData(new wxCairoBitmapData(this, image));
+ }
+
+ return bmp;
+}
+
+wxImage wxCairoRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
+{
+ ENSURE_LOADED_OR_RETURN(wxNullImage);
+
+ const wxCairoBitmapData* const
+ data = static_cast<wxCairoBitmapData*>(bmp.GetGraphicsData());
+
+ return data ? data->ConvertToImage() : wxNullImage;
+}
+
+#endif // wxUSE_IMAGE
+
+
wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
{
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
projects / wxWidgets.git / blobdiff