C++ (Cpp) pango_font_get_glyph Examples

Example #1

File: GlyphPageTreeNodePango.cpp Project: 1833183060/wke

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;
}

Example #2

File: non-kerned-drawing.cpp Project: dog-god/iptv

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
}