ardour/ardour
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oversample meter faceplate image surfaces

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Works around issues with pango on windows,
fixes crude text on OSX/retina and can provide sub-pixel
rendering on GNU/Linux/X11.
This commit is contained in:
Robin Gareus 2015-05-05 03:02:09 +02:00
parent 6b69fd5640
commit 7447843a33
1 changed files with 16 additions and 3 deletions
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19
gtk2_ardour/meter_patterns.cc
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@ -619,8 +619,14 @@ meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
tickright = true;
}
#ifdef NO_OVERSAMPLE
cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
cairo_t* cr = cairo_create (surface);
#else
cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width*2, height*2);
cairo_t* cr = cairo_create (surface);
cairo_scale(cr, 2.0, 2.0);
#endif
Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
Pango::AttrList audio_font_attributes;
@ -632,7 +638,7 @@ meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
font = Pango::FontDescription (ARDOUR_UI::config()->get_SmallMonospaceFont());
#ifdef __APPLE__
const double fixfontsize = 1.125;
const double fixfontsize = 1.0;
#else
// counter-act global font-scaling.
const double fixfontsize = std::min(1.0, 0.9 / sqrtf(ARDOUR_UI::ui_scale));
@ -1086,12 +1092,19 @@ ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vect
}
cairo_move_to (cr, 0, 0);
cairo_set_source (cr, pattern);
gint width, height;
win->get_size (width, height);
#ifdef NO_OVERSAMPLE
cairo_set_source (cr, pattern);
cairo_rectangle (cr, 0, 0, width, height);
#else
cairo_scale(cr, 0.5, 0.5);
cairo_set_antialias(cr, CAIRO_ANTIALIAS_BEST);
cairo_set_source (cr, pattern);
cairo_rectangle (cr, 0, 0, width * 2., height * 2.);
#endif
cairo_fill (cr);
cairo_destroy (cr);