C++ (Cpp) gdk_region_shrink Examples

Example #1

File: gdkregion.c Project: amery/clip-angelo

/* Resizes a region by the specified amount.
 * Positive values shrink the region. Negative values expand it. */
int
clip_GDK_REGIONSHRINK(ClipMachine * ClipMachineMemory)
{
   C_object *creg = _fetch_co_arg(ClipMachineMemory);

   gint      dx = _clip_parni(ClipMachineMemory, 2);

   gint      dy = _clip_parni(ClipMachineMemory, 3);

   CHECKCOBJ(creg, GDK_IS_REGION(creg->object));
   CHECKOPT(2, NUMERIC_type_of_ClipVarType);
   CHECKOPT(3, NUMERIC_type_of_ClipVarType);

   gdk_region_shrink(GDK_REGION(creg), dx, dy);

   return 0;
 err:
   return 1;
}

Example #2

File: rbgdkregion.c Project: msakai/ruby-gnome2

static VALUE
rg_shrink(VALUE self, VALUE dx, VALUE dy)
{
    gdk_region_shrink(_SELF(self), NUM2INT(dx), NUM2INT(dy));
    return self;
}

Example #3

File: FontGtk.cpp Project: Czerrr/ISeeBrowser

void Font::drawComplexText(GraphicsContext* context, const TextRun& run, const FloatPoint& point, int from, int to) const
{
    cairo_t* cr = context->platformContext();
    cairo_save(cr);
    cairo_translate(cr, point.x(), point.y());

    PangoLayout* layout = pango_cairo_create_layout(cr);
    setPangoAttributes(this, run, layout);

    gchar* utf8 = convertUniCharToUTF8(run.characters(), run.length(), 0, run.length());
    pango_layout_set_text(layout, utf8, -1);

    // Our layouts are single line
    PangoLayoutLine* layoutLine = pango_layout_get_line_readonly(layout, 0);

    GdkRegion* partialRegion = NULL;
    if (to - from != run.length()) {
        // Clip the region of the run to be rendered
        char* start = g_utf8_offset_to_pointer(utf8, from);
        char* end = g_utf8_offset_to_pointer(start, to - from);
        int ranges[] = {start - utf8, end - utf8};
        partialRegion = gdk_pango_layout_line_get_clip_region(layoutLine, 0, 0, ranges, 1);
        gdk_region_shrink(partialRegion, 0, -pixelSize());
    }

    Color fillColor = context->fillColor();
    float red, green, blue, alpha;

    // Text shadow, inspired by FontMac
    IntSize shadowSize;
    int shadowBlur = 0;
    Color shadowColor;
    bool hasShadow = context->textDrawingMode() == cTextFill &&
        context->getShadow(shadowSize, shadowBlur, shadowColor);

    // TODO: Blur support
    if (hasShadow) {
        // Disable graphics context shadows (not yet implemented) and paint them manually
        context->clearShadow();
        Color shadowFillColor(shadowColor.red(), shadowColor.green(), shadowColor.blue(), shadowColor.alpha() * fillColor.alpha() / 255);
        cairo_save(cr);

        shadowFillColor.getRGBA(red, green, blue, alpha);
        cairo_set_source_rgba(cr, red, green, blue, alpha);

        cairo_translate(cr, shadowSize.width(), shadowSize.height());

        if (partialRegion) {
            gdk_cairo_region(cr, partialRegion);
            cairo_clip(cr);
        }

        pango_cairo_show_layout_line(cr, layoutLine);

        cairo_restore(cr);
    }

    fillColor.getRGBA(red, green, blue, alpha);
    cairo_set_source_rgba(cr, red, green, blue, alpha);

    if (partialRegion) {
        gdk_cairo_region(cr, partialRegion);
        cairo_clip(cr);
    }

    pango_cairo_show_layout_line(cr, layoutLine);

    if (context->textDrawingMode() & cTextStroke) {
        Color strokeColor = context->strokeColor();
        strokeColor.getRGBA(red, green, blue, alpha);
        cairo_set_source_rgba(cr, red, green, blue, alpha);
        pango_cairo_layout_line_path(cr, layoutLine);
        cairo_set_line_width(cr, context->strokeThickness());
        cairo_stroke(cr);
    }

    // Re-enable the platform shadow we disabled earlier
    if (hasShadow)
        context->setShadow(shadowSize, shadowBlur, shadowColor);

    // Pango sometimes leaves behind paths we don't want
    cairo_new_path(cr);

    if (partialRegion)
        gdk_region_destroy(partialRegion);

    g_free(utf8);
    g_object_unref(layout);

    cairo_restore(cr);
}