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/*
Copyright (C) 2015 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#if !defined USE_CAIRO_IMAGE_SURFACE && !defined NDEBUG
#define OPTIONAL_CAIRO_IMAGE_SURFACE
#endif
#include "gtkmm2ext/cairo_icon.h"
#include "gtkmm2ext/gtk_ui.h"
using namespace Gtkmm2ext;
CairoIcon::CairoIcon (ArdourIcon::Icon t, uint32_t foreground_color)
: icon_type (t)
, fg (foreground_color)
{
add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK);
}
CairoIcon::~CairoIcon ()
{
}
void
CairoIcon::set_fg (uint32_t color)
{
fg = color;
queue_draw ();
}
void
CairoIcon::render (cairo_t* cr , cairo_rectangle_t* area)
{
const double scale = UI::instance()->ui_scale;
int width = get_width() * scale;
int height = get_height () * scale;
ArdourIcon::render (cr, icon_type, width, height, Off, fg);
}
bool
CairoIcon::on_expose_event (GdkEventExpose *ev)
{
#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
Cairo::RefPtr<Cairo::Context> cr;
if (getenv("ARDOUR_IMAGE_SURFACE")) {
if (!image_surface) {
image_surface = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, get_width(), get_height());
}
cr = Cairo::Context::create (image_surface);
} else {
cr = get_window()->create_cairo_context ();
}
#elif defined USE_CAIRO_IMAGE_SURFACE
if (!image_surface) {
image_surface = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, get_width(), get_height());
}
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create (image_surface);
#else
Cairo::RefPtr<Cairo::Context> cr = get_window()->create_cairo_context ();
#endif
cr->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
cr->clip ();
cr->translate (ev->area.x, ev->area.y);
cairo_rectangle_t expose_area;
expose_area.x = ev->area.x;
expose_area.y = ev->area.y;
expose_area.width = ev->area.width;
expose_area.height = ev->area.height;
CairoIcon::render (cr->cobj(), &expose_area);
#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
if (getenv("ARDOUR_IMAGE_SURFACE")) {
#endif
#if defined USE_CAIRO_IMAGE_SURFACE || defined OPTIONAL_CAIRO_IMAGE_SURFACE
image_surface->flush();
/* now blit our private surface back to the GDK one */
Cairo::RefPtr<Cairo::Context> cairo_context = get_window()->create_cairo_context ();
cairo_context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
cairo_context->clip ();
cairo_context->set_source (image_surface, 0, 0);
cairo_context->set_operator (Cairo::OPERATOR_SOURCE);
cairo_context->paint ();
#endif
#ifdef OPTIONAL_CAIRO_IMAGE_SURFACE
}
#endif
return true;
}
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