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