#include <gtk/gtk.h>
#include "flutter/shell/platform/embedder/embedder.h"

Functions
G_BEGIN_DECLS	G_DECLARE_DERIVABLE_TYPE (FlViewRenderer, fl_view_renderer, FL, VIEW_RENDERER, GtkDrawingArea) struct _FlViewRendererClass

void	fl_view_renderer_set_background_color (FlViewRenderer renderer, const GdkRGBA color)

void	fl_view_renderer_paint_background (FlViewRenderer renderer, cairo_t cr)

void	fl_view_renderer_present_layers (FlViewRenderer renderer, const FlutterLayer *layers, size_t layers_count)

void	fl_view_renderer_notify_frame (FlViewRenderer *renderer)

Function Documentation

◆ fl_view_renderer_notify_frame()

void fl_view_renderer_notify_frame ( FlViewRenderer * renderer )

fl_view_renderer_notify_frame: @renderer: an #FlViewRenderer.

Notifies that a frame has been rendered. Subclasses call this on each frame. The "first-frame" signal is emitted on the first call.

Definition at line 99 of file fl_view_renderer.cc.

                                                         {
  g_return_if_fail(FL_IS_VIEW_RENDERER(self));
 
  FlViewRendererPrivate* priv = static_cast<FlViewRendererPrivate*>(
      fl_view_renderer_get_instance_private(self));
 
  if (!priv->have_first_frame) {
    priv->have_first_frame = TRUE;
    g_signal_emit(self, fl_view_renderer_signals[SIGNAL_FIRST_FRAME], 0);
  }
}

References fl_view_renderer_signals, priv, self, SIGNAL_FIRST_FRAME, and TRUE.

Referenced by G_DEFINE_TYPE(), and G_DEFINE_TYPE().

◆ fl_view_renderer_paint_background()

void fl_view_renderer_paint_background	(	FlViewRenderer *	renderer,
		cairo_t *	cr
	)

fl_view_renderer_paint_background: @renderer: an #FlViewRenderer. @cr: a #cairo_t to paint to.

Paints the background color behind the Flutter frame. Subclasses call this at the start of their draw implementation.

Definition at line 73 of file fl_view_renderer.cc.

                                                                          {
  g_return_if_fail(FL_IS_VIEW_RENDERER(self));
 
  FlViewRendererPrivate* priv = static_cast<FlViewRendererPrivate*>(
      fl_view_renderer_get_instance_private(self));
 
  // Don't bother drawing if fully transparent - the widget above this will
  // already be drawn by GTK.
  if (priv->background_color->red == 0 && priv->background_color->green == 0 &&
      priv->background_color->blue == 0 && priv->background_color->alpha == 0) {
    return;
  }
 
  gdk_cairo_set_source_rgba(cr, priv->background_color);
  cairo_paint(cr);
}

References gdk_cairo_set_source_rgba(), priv, and self.

Referenced by fl_view_renderer_opengl_draw(), and fl_view_renderer_software_draw().

◆ fl_view_renderer_present_layers()

void fl_view_renderer_present_layers	(	FlViewRenderer *	renderer,
		const FlutterLayer **	layers,
		size_t	layers_count
	)

fl_view_renderer_present_layers: @renderer: an #FlViewRenderer. @layers: layers to draw. @layers_count: number of layers.

Composites a frame into the renderer. This method can be called from any thread.

Definition at line 90 of file fl_view_renderer.cc.

                                                          {
  g_return_if_fail(FL_IS_VIEW_RENDERER(self));
 
  FlViewRendererClass* klass = FL_VIEW_RENDERER_GET_CLASS(self);
  klass->present_layers(self, layers, layers_count);
}

References layers, layers_count, and self.

Referenced by fl_view_present_layers().

◆ fl_view_renderer_set_background_color()

void fl_view_renderer_set_background_color	(	FlViewRenderer *	renderer,
		const GdkRGBA *	color
	)

fl_view_renderer_set_background_color: @renderer: an #FlViewRenderer. @color: the background color.

Sets the background color drawn behind the Flutter frame.

Definition at line 59 of file fl_view_renderer.cc.

                                                                 {
  g_return_if_fail(FL_IS_VIEW_RENDERER(self));
 
  FlViewRendererPrivate* priv = static_cast<FlViewRendererPrivate*>(
      fl_view_renderer_get_instance_private(self));
 
  gdk_rgba_free(priv->background_color);
  priv->background_color = gdk_rgba_copy(color);
 
  // Redraw so the new background color is shown.
  gtk_widget_queue_draw(GTK_WIDGET(self));
}

References gtk_widget_queue_draw(), priv, and self.

Referenced by fl_view_set_background_color().

◆ G_DECLARE_DERIVABLE_TYPE()

G_BEGIN_DECLS G_DECLARE_DERIVABLE_TYPE	(	FlViewRenderer	,
		fl_view_renderer	,
		FL	,
		VIEW_RENDERER	,
		GtkDrawingArea
	)

FlViewRenderer:

#FlViewRenderer is a GTK widget that renders the contents of a Flutter view. Input handling and other view responsibilities are handled by #FlView.

Subclasses implement rendering for a particular backend, for example #FlViewRendererOpenGL and #FlViewRendererSoftware. The "first-frame" signal is emitted when the first frame has been rendered.

Composites a frame into the renderer. May be called from any thread.

This method is abstract and must be implemented by subclasses.

Definition at line 14 of file fl_view_renderer.h.

                            {
  GtkDrawingAreaClass parent_class;
 
  /**
   * Composites a frame into the renderer. May be called from any thread.
   *
   * This method is abstract and must be implemented by subclasses.
   */
  void (*present_layers)(FlViewRenderer* renderer,
                         const FlutterLayer** layers,
                         size_t layers_count);
};