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fixes for canvas text display on Retina (from Valeriy)

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This commit is contained in:
Paul Davis 2015-06-16 07:51:50 -04:00
parent 3f157f961a
commit d65f03d074
1 changed files with 21 additions and 1 deletions
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22
libs/canvas/text.cc
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@ -147,10 +147,20 @@ Text::__redraw (Glib::RefPtr<Pango::Layout> layout) const
_width = w + _width_correction; _width = w + _width_correction;
_height = h; _height = h;
#ifdef __APPLE__
_image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, _width * 2, _height * 2);
#else
_image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, _width, _height); _image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, _width, _height);
#endif
Cairo::RefPtr<Cairo::Context> img_context = Cairo::Context::create (_image); Cairo::RefPtr<Cairo::Context> img_context = Cairo::Context::create (_image);
#ifdef __APPLE__
/* Below, the rendering scaling is set to support retina display
*/
img_context->scale (2, 2);
#endif
/* and draw, in the appropriate color of course */ /* and draw, in the appropriate color of course */
if (_outline) { if (_outline) {
@ -193,8 +203,18 @@ Text::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const
Rect intersection (i.get()); Rect intersection (i.get());
context->rectangle (intersection.x0, intersection.y0, intersection.width(), intersection.height()); context->rectangle (intersection.x0, intersection.y0, intersection.width(), intersection.height());
#ifdef __APPLE__
/* Below, the rendering scaling is set to support retina display
*/
Cairo::Matrix original_matrix = context->get_matrix();
context->scale (0.5, 0.5);
context->set_source (_image, self.x0 * 2, self.y0 * 2);
context->fill ();
context->set_matrix (original_matrix);
#else
context->set_source (_image, self.x0, self.y0); context->set_source (_image, self.x0, self.y0);
context->fill (); context->fill ();
#endif
} }
void void