{
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
// 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;
}
//-----------------------------------------------------------------------------
// 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...
- const cairo_format_t bufferFormat = bmp.GetDepth() == 32
+ cairo_format_t bufferFormat = bmp.GetDepth() == 32
#ifdef __WXGTK__
|| bmp.GetMask()
#endif
int stride = InitBuffer(bmp.GetWidth(), bmp.GetHeight(), bufferFormat);
- int bw = m_width;
- int bh = m_height;
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(bw, bh));
+ 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;
wxUint32* const rowStartDst = data;
- for (int x=0; x<bw; x++)
+ 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
}
else // no alpha
{
- 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;
wxUint32* const rowStartDst = data;
- for (int x=0; x<bw; x++)
+ 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
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;
wxUint32* const rowStartDst = data;
- for (int x=0; x<bw; x++)
+ for (int x=0; x<m_width; x++)
{
if (p.Red()+p.Green()+p.Blue() == 0)
*data = 0;
delete [] m_buffer;
}
-// ----------------------------------------------------------------------------
-// wxGraphicsBitmap implementation
-// ----------------------------------------------------------------------------
-
-#if wxUSE_IMAGE
-
-wxImage wxGraphicsBitmap::ConvertToImage() const
-{
- const wxCairoBitmapData* const
- data = static_cast<wxCairoBitmapData*>(GetGraphicsData());
-
- return data ? data->ConvertToImage() : wxNullImage;
-}
-
-#endif // wxUSE_IMAGE
-
//-----------------------------------------------------------------------------
// wxCairoContext implementation
//-----------------------------------------------------------------------------
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
// 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
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 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