diff options
author | Robin Gareus <robin@gareus.org> | 2019-12-26 23:55:44 +0100 |
---|---|---|
committer | Robin Gareus <robin@gareus.org> | 2019-12-27 19:35:02 +0100 |
commit | 2edbda252619b6906e463c07ba2ea57422ccfa70 (patch) | |
tree | c62866e755f02906b149cb8f44b2beb4f65a6e79 /libs/gtkmm2ext | |
parent | c3ab63a2eadece16ab5b5494d5815c147c6bd146 (diff) |
Replace explicit image-surface with cairo pattern/group
For MacOS/X this is equivalent, rendering happens using a
CGBitmapContext + image-surface. Windows and Linux needs profiling
for respective equivalent surfaces.
Diffstat (limited to 'libs/gtkmm2ext')
-rw-r--r-- | libs/gtkmm2ext/cairo_widget.cc | 43 | ||||
-rw-r--r-- | libs/gtkmm2ext/gtkmm2ext/cairo_widget.h | 5 |
2 files changed, 13 insertions, 35 deletions
diff --git a/libs/gtkmm2ext/cairo_widget.cc b/libs/gtkmm2ext/cairo_widget.cc index b06e443ec0..bbc4452238 100644 --- a/libs/gtkmm2ext/cairo_widget.cc +++ b/libs/gtkmm2ext/cairo_widget.cc @@ -58,9 +58,9 @@ CairoWidget::CairoWidget () { _name_proxy.connect (sigc::mem_fun (*this, &CairoWidget::on_name_changed)); #ifdef USE_CAIRO_IMAGE_SURFACE - _use_image_surface = true; + _use_intermediate_surface = true; #else - _use_image_surface = NULL != getenv("ARDOUR_IMAGE_SURFACE"); + _use_intermediate_surface = NULL != getenv("ARDOUR_IMAGE_SURFACE"); #endif } @@ -82,8 +82,7 @@ CairoWidget::set_canvas_widget () ensure_style (); gtk_widget_set_realized (GTK_WIDGET(gobj()), true); _canvas_widget = true; - _use_image_surface = false; - image_surface.clear (); + _use_intermediate_surface = false; } void @@ -98,13 +97,9 @@ CairoWidget::use_nsglview () } void -CairoWidget::use_image_surface (bool yn) +CairoWidget::use_intermediate_surface (bool yn) { - if (_use_image_surface == yn) { - return; - } - image_surface.clear (); - _use_image_surface = yn; + _use_intermediate_surface = yn; } int @@ -163,14 +158,9 @@ CairoWidget::on_expose_event (GdkEventExpose *ev) return true; } #endif - Cairo::RefPtr<Cairo::Context> cr; - if (_use_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 (); + Cairo::RefPtr<Cairo::Context> cr = get_window()->create_cairo_context (); + if (_use_intermediate_surface) { + cr->push_group (); } cr->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height); @@ -198,15 +188,9 @@ CairoWidget::on_expose_event (GdkEventExpose *ev) render (cr, &expose_area); - if (_use_image_surface) { - image_surface->flush(); - /* now blit our private surface back to the GDK one */ - Cairo::RefPtr<Cairo::Context> window_context = get_window()->create_cairo_context (); - window_context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height); - window_context->clip (); - window_context->set_source (image_surface, 0, 0); - window_context->set_operator (Cairo::OPERATOR_SOURCE); - window_context->paint (); + if (_use_intermediate_surface) { + cr->pop_group_to_source (); + cr->paint (); } return true; @@ -261,11 +245,6 @@ CairoWidget::on_size_allocate (Gtk::Allocation& alloc) memcpy (&_allocation, &alloc, sizeof(Gtk::Allocation)); } - if (_use_image_surface) { - image_surface.clear (); - image_surface = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, alloc.get_width(), alloc.get_height()); - } - if (_canvas_widget) { return; } diff --git a/libs/gtkmm2ext/gtkmm2ext/cairo_widget.h b/libs/gtkmm2ext/gtkmm2ext/cairo_widget.h index 0dbd8fe8a0..7c7456eaa3 100644 --- a/libs/gtkmm2ext/gtkmm2ext/cairo_widget.h +++ b/libs/gtkmm2ext/gtkmm2ext/cairo_widget.h @@ -40,7 +40,7 @@ public: void set_canvas_widget (); void use_nsglview (); - void use_image_surface (bool yn = true); + void use_intermediate_surface (bool yn = true); /* swizzle Gtk::Widget methods for Canvas::Widget */ void queue_draw (); @@ -143,13 +143,12 @@ protected: static sigc::slot<void,Gtk::Widget*> focus_handler; private: - Cairo::RefPtr<Cairo::Surface> image_surface; Glib::SignalProxyProperty _name_proxy; sigc::connection _parent_style_change; Widget * _current_parent; bool _canvas_widget; void* _nsglview; - bool _use_image_surface; + bool _use_intermediate_surface; Gdk::Rectangle _allocation; }; |