bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData)
{
// The bufferLength will be greater than the glyph page size if the buffer has Unicode supplementary characters.
// We won't support this for now.
if (bufferLength > GlyphPage::size)
return false;
if (!fontData->platformData().m_font || fontData->platformData().m_font == reinterpret_cast<PangoFont*>(-1))
return false;
bool haveGlyphs = false;
for (unsigned i = 0; i < length; i++) {
Glyph glyph = pango_font_get_glyph(fontData->platformData().m_font, fontData->platformData().m_context, buffer[i]);
if (!glyph)
setGlyphDataForIndex(offset + i, 0, 0);
else {
setGlyphDataForIndex(offset + i, glyph, fontData);
haveGlyphs = true;
}
}
return haveGlyphs;
}
void drawTextWithSpacing(GraphicsContext* graphicsContext, const SimpleFontData* font, const wxColour& color, const GlyphBuffer& glyphBuffer, int from, int numGlyphs, const FloatPoint& point)
{
#if USE(WXGC)
wxGCDC* dc = static_cast<wxGCDC*>(graphicsContext->platformContext());
wxGraphicsContext* gc = dc->GetGraphicsContext();
gc->PushState();
cairo_t* cr = (cairo_t*)gc->GetNativeContext();
wxFont* wxfont = font->getWxFont();
cairo_scaled_font_t* scaled_font = 0;
#if wxUSE_PANGO
PangoFont* pangoFont = createPangoFontForFont(wxfont);
PangoFontMap* fontMap = pangoFontMap();
PangoContext* pangoContext = pango_cairo_font_map_create_context(PANGO_CAIRO_FONT_MAP(fontMap));
scaled_font = createScaledFontForFont(wxfont);
#elif __WXMSW__
cairo_matrix_t sizeMatrix, ctm;
cairo_matrix_init_identity(&ctm);
int size = font->platformData().size();
cairo_matrix_init_scale(&sizeMatrix, size, size);
cairo_font_options_t* fontOptions = cairo_font_options_create();
cairo_font_options_set_antialias(fontOptions, CAIRO_ANTIALIAS_SUBPIXEL);
cairo_font_face_t* win_face = cairo_win32_font_face_create_for_hfont((HFONT)wxfont->GetHFONT());
scaled_font = cairo_scaled_font_create(win_face, &sizeMatrix, &ctm, fontOptions);
#endif
ASSERT(scaled_font);
GlyphBufferGlyph* glyphs = const_cast<GlyphBufferGlyph*>(glyphBuffer.glyphs(from));
float offset = point.x();
for (int i = 0; i < numGlyphs; i++) {
#if wxUSE_PANGO
glyphs[i].index = pango_font_get_glyph(pangoFont, pangoContext, glyphBuffer.glyphAt(from + i));
#endif
glyphs[i].x = offset;
glyphs[i].y = point.y();
offset += glyphBuffer.advanceAt(from + i);
}
cairo_set_source_rgba(cr, color.Red()/255.0, color.Green()/255.0, color.Blue()/255.0, color.Alpha()/255.0);
cairo_set_scaled_font(cr, scaled_font);
cairo_show_glyphs(cr, glyphs, numGlyphs);
cairo_scaled_font_destroy(scaled_font);
gc->PopState();
#else
wxDC* dc = graphicsContext->platformContext();
wxFont* wxfont = font->getWxFont();
if (wxfont && wxfont->IsOk())
dc->SetFont(*wxfont);
dc->SetTextForeground(color);
// convert glyphs to wxString
GlyphBufferGlyph* glyphs = const_cast<GlyphBufferGlyph*>(glyphBuffer.glyphs(from));
int offset = point.x();
wxString text = wxEmptyString;
for (unsigned i = 0; i < numGlyphs; i++) {
text = text.Append((wxChar)glyphs[i]);
offset += glyphBuffer.advanceAt(from + i);
}
// the y point is actually the bottom point of the text, turn it into the top
float height = font->ascent() - font->descent();
wxCoord ypoint = (wxCoord) (point.y() - height);
dc->DrawText(text, (wxCoord)point.x(), ypoint);
#endif
}