This partially reverts2edbda2526
and is a follow up to0b266a54f
, to fix performance issues with MS Windows graphics performance.
464 lines
10 KiB
C++
464 lines
10 KiB
C++
/*
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* Copyright (C) 2011-2016 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2014-2018 Robin Gareus <robin@gareus.org>
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* Copyright (C) 2014 Ben Loftis <ben@harrisonconsoles.com>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "gtkmm2ext/cairo_widget.h"
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#include "gtkmm2ext/gui_thread.h"
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#include "gtkmm2ext/rgb_macros.h"
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#ifdef __APPLE__
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#include <gdk/gdk.h>
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#include "gtkmm2ext/nsglview.h"
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#endif
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#include "pbd/i18n.h"
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static const char* has_cairo_widget_background_info = "has_cairo_widget_background_info";
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bool CairoWidget::_flat_buttons = false;
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bool CairoWidget::_boxy_buttons = false;
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bool CairoWidget::_widget_prelight = true;
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sigc::slot<void,Gtk::Widget*> CairoWidget::focus_handler;
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void CairoWidget::set_source_rgb_a( cairo_t* cr, Gdk::Color col, float a) //ToDo: this one and the Canvas version should be in a shared file (?)
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{
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float r = col.get_red_p ();
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float g = col.get_green_p ();
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float b = col.get_blue_p ();
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cairo_set_source_rgba(cr, r, g, b, a);
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}
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CairoWidget::CairoWidget ()
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: _active_state (Gtkmm2ext::Off)
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, _visual_state (Gtkmm2ext::NoVisualState)
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, _need_bg (true)
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, _grabbed (false)
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, _name_proxy (this, X_("name"))
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, _current_parent (0)
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, _canvas_widget (false)
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, _nsglview (0)
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{
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_name_proxy.connect (sigc::mem_fun (*this, &CairoWidget::on_name_changed));
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#ifdef USE_CAIRO_IMAGE_SURFACE
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_use_image_surface = true;
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#else
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_use_image_surface = NULL != getenv("ARDOUR_IMAGE_SURFACE");
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#endif
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}
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CairoWidget::~CairoWidget ()
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{
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if (_canvas_widget) {
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gtk_widget_set_realized (GTK_WIDGET(gobj()), false);
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}
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if (_parent_style_change) {
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_parent_style_change.disconnect();
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}
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}
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void
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CairoWidget::set_canvas_widget ()
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{
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assert (!_nsglview);
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assert (!_canvas_widget);
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ensure_style ();
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gtk_widget_set_realized (GTK_WIDGET(gobj()), true);
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_canvas_widget = true;
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_use_image_surface = false;
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image_surface.clear ();
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}
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void
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CairoWidget::use_nsglview ()
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{
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assert (!_nsglview);
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assert (!_canvas_widget);
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assert (!is_realized());
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#ifdef ARDOUR_CANVAS_NSVIEW_TAG // patched gdkquartz.h
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_nsglview = Gtkmm2ext::nsglview_create (this);
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#endif
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}
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void
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CairoWidget::use_image_surface (bool yn)
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{
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if (_use_image_surface == yn) {
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return;
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}
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image_surface.clear ();
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_use_image_surface = yn;
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}
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int
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CairoWidget::get_width () const
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{
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if (_canvas_widget) {
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return _allocation.get_width ();
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}
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return Gtk::EventBox::get_width ();
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}
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int
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CairoWidget::get_height () const
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{
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if (_canvas_widget) {
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return _allocation.get_height ();
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}
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return Gtk::EventBox::get_height ();
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}
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void
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CairoWidget::size_allocate (Gtk::Allocation& alloc)
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{
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if (_canvas_widget) {
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memcpy (&_allocation, &alloc, sizeof(Gtk::Allocation));
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return;
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}
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Gtk::EventBox::size_allocate (alloc);
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}
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bool
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CairoWidget::on_button_press_event (GdkEventButton*)
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{
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focus_handler (this);
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return false;
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}
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uint32_t
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CairoWidget::background_color ()
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{
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if (_need_bg) {
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Gdk::Color bg (get_parent_bg());
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return RGBA_TO_UINT (bg.get_red() / 255, bg.get_green() / 255, bg.get_blue() / 255, 255);
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} else {
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return 0;
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}
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}
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bool
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CairoWidget::on_expose_event (GdkEventExpose *ev)
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{
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#ifdef __APPLE__
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if (_nsglview) {
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Gtkmm2ext::nsglview_queue_draw (_nsglview, ev->area.x, ev->area.y, ev->area.width, ev->area.height);
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return true;
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}
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#endif
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Cairo::RefPtr<Cairo::Context> cr;
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if (_use_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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cr->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
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if (_need_bg) {
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cr->clip_preserve ();
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/* paint expose area the color of the parent window bg
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*/
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Gdk::Color bg (get_parent_bg());
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cr->set_source_rgb (bg.get_red_p(), bg.get_green_p(), bg.get_blue_p());
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cr->fill ();
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} else {
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std::cerr << get_name() << " skipped bg fill\n";
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cr->clip ();
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}
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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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render (cr, &expose_area);
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if (_use_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> window_context = get_window()->create_cairo_context ();
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window_context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
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window_context->clip ();
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window_context->set_source (image_surface, 0, 0);
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window_context->set_operator (Cairo::OPERATOR_SOURCE);
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window_context->paint ();
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}
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return true;
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}
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/** Marks the widget as dirty, so that render () will be called on
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* the next GTK expose event.
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*/
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void
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CairoWidget::set_dirty (cairo_rectangle_t *area)
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{
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ENSURE_GUI_THREAD (*this, &CairoWidget::set_dirty);
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if (!area) {
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queue_draw ();
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} else {
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// TODO emit QueueDrawArea -> ArdourCanvas::Widget
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if (QueueDraw ()) {
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return;
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}
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queue_draw_area (area->x, area->y, area->width, area->height);
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}
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}
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void
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CairoWidget::queue_draw ()
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{
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if (QueueDraw ()) {
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return;
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}
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Gtk::EventBox::queue_draw ();
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}
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void
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CairoWidget::queue_resize ()
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{
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if (QueueResize ()) {
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return;
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}
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Gtk::EventBox::queue_resize ();
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}
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/** Handle a size allocation.
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* @param alloc GTK allocation.
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*/
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void
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CairoWidget::on_size_allocate (Gtk::Allocation& alloc)
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{
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if (!_canvas_widget) {
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Gtk::EventBox::on_size_allocate (alloc);
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} else {
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memcpy (&_allocation, &alloc, sizeof(Gtk::Allocation));
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}
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if (_use_image_surface) {
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image_surface.clear ();
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image_surface = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, alloc.get_width(), alloc.get_height());
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}
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if (_canvas_widget) {
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return;
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}
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#ifdef __APPLE__
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if (_nsglview) {
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gint xx, yy;
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gtk_widget_translate_coordinates(
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GTK_WIDGET(gobj()),
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GTK_WIDGET(get_toplevel()->gobj()),
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0, 0, &xx, &yy);
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Gtkmm2ext::nsglview_resize (_nsglview, xx, yy, alloc.get_width(), alloc.get_height());
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}
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#endif
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set_dirty ();
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}
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Gdk::Color
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CairoWidget::get_parent_bg ()
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{
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Widget* parent;
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parent = get_parent ();
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while (parent) {
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void* p = g_object_get_data (G_OBJECT(parent->gobj()), has_cairo_widget_background_info);
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if (p) {
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Glib::RefPtr<Gtk::Style> style = parent->get_style();
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if (_current_parent != parent) {
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if (_parent_style_change) _parent_style_change.disconnect();
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_current_parent = parent;
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_parent_style_change = parent->signal_style_changed().connect (mem_fun (*this, &CairoWidget::on_style_changed));
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}
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return style->get_bg (get_state());
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}
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if (!parent->get_has_window()) {
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parent = parent->get_parent();
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} else {
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break;
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}
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}
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if (parent && parent->get_has_window()) {
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if (_current_parent != parent) {
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if (_parent_style_change) _parent_style_change.disconnect();
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_current_parent = parent;
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_parent_style_change = parent->signal_style_changed().connect (mem_fun (*this, &CairoWidget::on_style_changed));
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}
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return parent->get_style ()->get_bg (parent->get_state());
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}
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return get_style ()->get_bg (get_state());
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}
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void
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CairoWidget::set_active_state (Gtkmm2ext::ActiveState s)
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{
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if (_active_state != s) {
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_active_state = s;
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StateChanged ();
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}
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}
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void
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CairoWidget::set_visual_state (Gtkmm2ext::VisualState s)
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{
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if (_visual_state != s) {
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_visual_state = s;
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StateChanged ();
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}
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}
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void
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CairoWidget::set_active (bool yn)
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{
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/* this is an API simplification for buttons
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that only use the Active and Normal states.
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*/
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if (yn) {
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set_active_state (Gtkmm2ext::ExplicitActive);
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} else {
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unset_active_state ();
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}
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}
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void
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CairoWidget::on_style_changed (const Glib::RefPtr<Gtk::Style>&)
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{
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set_dirty ();
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}
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void
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CairoWidget::on_realize ()
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{
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Gtk::EventBox::on_realize();
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#ifdef __APPLE__
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if (_nsglview) {
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Gtkmm2ext::nsglview_overlay (_nsglview, get_window()->gobj());
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}
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#endif
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}
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void
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CairoWidget::on_map ()
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{
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Gtk::EventBox::on_map();
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#ifdef __APPLE__
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if (_nsglview) {
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Gtkmm2ext::nsglview_set_visible (_nsglview, true);
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Gtk::Allocation a = get_allocation();
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gint xx, yy;
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gtk_widget_translate_coordinates(
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GTK_WIDGET(gobj()),
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GTK_WIDGET(get_toplevel()->gobj()),
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0, 0, &xx, &yy);
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Gtkmm2ext::nsglview_resize (_nsglview, xx, yy, a.get_width(), a.get_height());
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}
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#endif
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}
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void
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CairoWidget::on_unmap ()
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{
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Gtk::EventBox::on_unmap();
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#ifdef __APPLE__
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if (_nsglview) {
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Gtkmm2ext::nsglview_set_visible (_nsglview, false);
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}
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#endif
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}
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void
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CairoWidget::on_state_changed (Gtk::StateType)
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{
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/* this will catch GTK-level state changes from calls like
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::set_sensitive()
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*/
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if (get_state() == Gtk::STATE_INSENSITIVE) {
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set_visual_state (Gtkmm2ext::VisualState (visual_state() | Gtkmm2ext::Insensitive));
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} else {
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set_visual_state (Gtkmm2ext::VisualState (visual_state() & ~Gtkmm2ext::Insensitive));
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}
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set_dirty ();
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}
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void
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CairoWidget::set_draw_background (bool yn)
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{
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_need_bg = yn;
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}
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void
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CairoWidget::provide_background_for_cairo_widget (Gtk::Widget& w, const Gdk::Color& bg)
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{
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/* set up @w to be able to provide bg information to
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any CairoWidgets that are packed inside it.
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*/
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w.modify_bg (Gtk::STATE_NORMAL, bg);
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w.modify_bg (Gtk::STATE_INSENSITIVE, bg);
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w.modify_bg (Gtk::STATE_ACTIVE, bg);
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w.modify_bg (Gtk::STATE_SELECTED, bg);
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g_object_set_data (G_OBJECT(w.gobj()), has_cairo_widget_background_info, (void*) 0xfeedface);
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}
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void
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CairoWidget::set_flat_buttons (bool yn)
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{
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_flat_buttons = yn;
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}
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void
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CairoWidget::set_boxy_buttons (bool yn)
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{
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_boxy_buttons = yn;
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}
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void
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CairoWidget::set_widget_prelight (bool yn)
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{
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_widget_prelight = yn;
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}
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void
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CairoWidget::set_focus_handler (sigc::slot<void,Gtk::Widget*> s)
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{
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focus_handler = s;
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}
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