#include "flutter/shell/platform/linux/public/flutter_linux/fl_view.h"
#include <atk/atk.h>
#include <gdk/gdkwayland.h>
#include <gtk/gtk-a11y.h>
#include <cstring>
#include "flutter/common/constants.h"
#include "flutter/shell/platform/linux/fl_accessible_node.h"
#include "flutter/shell/platform/linux/fl_compositor_opengl.h"
#include "flutter/shell/platform/linux/fl_compositor_software.h"
#include "flutter/shell/platform/linux/fl_engine_private.h"
#include "flutter/shell/platform/linux/fl_key_event.h"
#include "flutter/shell/platform/linux/fl_opengl_manager.h"
#include "flutter/shell/platform/linux/fl_plugin_registrar_private.h"
#include "flutter/shell/platform/linux/fl_pointer_manager.h"
#include "flutter/shell/platform/linux/fl_scrolling_manager.h"
#include "flutter/shell/platform/linux/fl_socket_accessible.h"
#include "flutter/shell/platform/linux/fl_touch_manager.h"
#include "flutter/shell/platform/linux/fl_view_accessible.h"
#include "flutter/shell/platform/linux/fl_view_private.h"
#include "flutter/shell/platform/linux/fl_window_state_monitor.h"
#include "flutter/shell/platform/linux/public/flutter_linux/fl_engine.h"
#include "flutter/shell/platform/linux/public/flutter_linux/fl_plugin_registry.h"

Classes
struct	_FlView

Enumerations
enum	{ SIGNAL_FIRST_FRAME , LAST_SIGNAL }

Functions
static void	fl_renderable_iface_init (FlRenderableInterface *iface)

static void	fl_view_plugin_registry_iface_init (FlPluginRegistryInterface *iface)

	G_DEFINE_TYPE_WITH_CODE (FlView, fl_view, GTK_TYPE_BOX, G_IMPLEMENT_INTERFACE(fl_plugin_registry_get_type(), fl_view_plugin_registry_iface_init)) static gboolean redraw_cb(gpointer user_data)

static gboolean	window_delete_event_cb (FlView *self)

static void	init_scrolling (FlView *self)

static void	init_touch (FlView *self)

static FlutterPointerDeviceKind	get_device_kind (GdkEvent *event)

static void	cursor_changed_cb (FlView *self)

static void	setup_cursor (FlView *self)

static void	handle_geometry_changed (FlView *self)

static void	view_added_cb (GObject object, GAsyncResult result, gpointer user_data)

static void	update_semantics_cb (FlView self, const FlutterSemanticsUpdate2 update)

static void	on_pre_engine_restart_cb (FlView *self)

static void	fl_view_present_layers (FlRenderable renderable, const FlutterLayer *layers, size_t layers_count)

static FlPluginRegistrar *	fl_view_get_registrar_for_plugin (FlPluginRegistry registry, const gchar name)

static void	sync_modifier_if_needed (FlView self, GdkEvent event)

static void	set_scrolling_position (FlView *self, gdouble x, gdouble y)

static gboolean	button_press_event_cb (FlView self, GdkEventButton button_event)

static gboolean	button_release_event_cb (FlView self, GdkEventButton button_event)

static gboolean	scroll_event_cb (FlView self, GdkEventScroll event)

static gboolean	touch_event_cb (FlView self, GdkEventTouch event)

static gboolean	motion_notify_event_cb (FlView self, GdkEventMotion motion_event)

static gboolean	enter_notify_event_cb (FlView self, GdkEventCrossing crossing_event)

static gboolean	leave_notify_event_cb (FlView self, GdkEventCrossing crossing_event)

static void	gesture_rotation_begin_cb (FlView *self)

static void	gesture_rotation_update_cb (FlView *self, gdouble rotation, gdouble delta)

static void	gesture_rotation_end_cb (FlView *self)

static void	gesture_zoom_begin_cb (FlView *self)

static void	gesture_zoom_update_cb (FlView *self, gdouble scale)

static void	gesture_zoom_end_cb (FlView *self)

static void	setup_opengl (FlView *self)

static void	setup_software (FlView *self)

static void	realize_cb (FlView *self)

static void	size_allocate_cb (FlView *self)

static void	paint_background (FlView self, cairo_t cr)

static gboolean	draw_cb (FlView self, cairo_t cr)

static void	fl_view_notify (GObject object, GParamSpec pspec)

static void	fl_view_dispose (GObject *object)

static void	fl_view_realize (GtkWidget *widget)

static gboolean	handle_key_event (FlView self, GdkEventKey key_event)

static gboolean	fl_view_focus_in_event (GtkWidget widget, GdkEventFocus event)

static gboolean	fl_view_key_press_event (GtkWidget widget, GdkEventKey key_event)

static gboolean	fl_view_key_release_event (GtkWidget widget, GdkEventKey key_event)

static void	fl_view_class_init (FlViewClass *klass)

static void	setup_engine (FlView *self)

static void	fl_view_init (FlView *self)

G_MODULE_EXPORT FlView *	fl_view_new (FlDartProject *project)

G_MODULE_EXPORT FlView *	fl_view_new_for_engine (FlEngine *engine)

G_MODULE_EXPORT FlEngine *	fl_view_get_engine (FlView *self)

G_MODULE_EXPORT int64_t	fl_view_get_id (FlView *self)

G_MODULE_EXPORT void	fl_view_set_background_color (FlView self, const GdkRGBA color)

FlViewAccessible *	fl_view_get_accessible (FlView *self)

Variables
static guint	fl_view_signals [LAST_SIGNAL]

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
SIGNAL_FIRST_FRAME
LAST_SIGNAL

Definition at line 85 of file fl_view.cc.

85 { SIGNAL_FIRST_FRAME, LAST_SIGNAL };

LAST_SIGNAL

@ LAST_SIGNAL

Definition: fl_view.cc:85

SIGNAL_FIRST_FRAME

@ SIGNAL_FIRST_FRAME

Definition: fl_view.cc:85

Function Documentation

◆ button_press_event_cb()

static gboolean button_press_event_cb	(	FlView *	self,
		GdkEventButton *	button_event
	)

static

Definition at line 294 of file fl_view.cc.

                                                                     {
   GdkEvent* event = reinterpret_cast<GdkEvent*>(button_event);
  
   // Flutter doesn't handle double and triple click events.
   GdkEventType event_type = gdk_event_get_event_type(event);
   if (event_type == GDK_DOUBLE_BUTTON_PRESS ||
       event_type == GDK_TRIPLE_BUTTON_PRESS) {
     return FALSE;
   }
  
   guint button = 0;
   gdk_event_get_button(event, &button);
  
   gdouble x = 0.0, y = 0.0;
   gdk_event_get_coords(event, &x, &y);
  
   set_scrolling_position(self, x, y);
   sync_modifier_if_needed(self, event);
  
   gint scale_factor = gtk_widget_get_scale_factor(GTK_WIDGET(self));
   return fl_pointer_manager_handle_button_press(
       self->pointer_manager, gdk_event_get_time(event), get_device_kind(event),
       x * scale_factor, y * scale_factor, button);
 }

References fl_pointer_manager_handle_button_press(), get_device_kind(), set_scrolling_position(), and sync_modifier_if_needed().

Referenced by fl_view_init().

◆ button_release_event_cb()

static gboolean button_release_event_cb	(	FlView *	self,
		GdkEventButton *	button_event
	)

static

Definition at line 321 of file fl_view.cc.

                                                                       {
   GdkEvent* event = reinterpret_cast<GdkEvent*>(button_event);
  
   guint button = 0;
   gdk_event_get_button(event, &button);
  
   gdouble x = 0.0, y = 0.0;
   gdk_event_get_coords(event, &x, &y);
  
   set_scrolling_position(self, x, y);
   sync_modifier_if_needed(self, event);
  
   gint scale_factor = gtk_widget_get_scale_factor(GTK_WIDGET(self));
   return fl_pointer_manager_handle_button_release(
       self->pointer_manager, gdk_event_get_time(event), get_device_kind(event),
       x * scale_factor, y * scale_factor, button);
 }

References fl_pointer_manager_handle_button_release(), get_device_kind(), set_scrolling_position(), and sync_modifier_if_needed().

Referenced by fl_view_init().

◆ cursor_changed_cb()

static void cursor_changed_cb ( FlView * self )

static

Definition at line 154 of file fl_view.cc.

                                             {
   FlMouseCursorHandler* handler =
       fl_engine_get_mouse_cursor_handler(self->engine);
   const gchar* cursor_name = fl_mouse_cursor_handler_get_cursor_name(handler);
   GdkWindow* window =
       gtk_widget_get_window(gtk_widget_get_toplevel(GTK_WIDGET(self)));
   g_autoptr(GdkCursor) cursor =
       gdk_cursor_new_from_name(gdk_window_get_display(window), cursor_name);
   gdk_window_set_cursor(window, cursor);
 }

References fl_engine_get_mouse_cursor_handler(), fl_mouse_cursor_handler_get_cursor_name(), g_autoptr(), and window.

Referenced by setup_cursor().

◆ draw_cb()

static gboolean draw_cb	(	FlView *	self,
		cairo_t *	cr
	)

static

Definition at line 522 of file fl_view.cc.

                                                    {
   paint_background(self, cr);
  
   if (self->render_context) {
     gdk_gl_context_make_current(self->render_context);
   }
  
   gboolean result = fl_compositor_render(
       self->compositor, cr,
       gtk_widget_get_window(GTK_WIDGET(self->render_area)));
  
   if (self->render_context) {
     gdk_gl_context_clear_current();
   }
  
   return result;
 }

References fl_compositor_render(), and paint_background().

Referenced by fl_view_init().

◆ enter_notify_event_cb()

static gboolean enter_notify_event_cb	(	FlView *	self,
		GdkEventCrossing *	crossing_event
	)

static

Definition at line 380 of file fl_view.cc.

                                                                         {
   GdkEvent* event = reinterpret_cast<GdkEvent*>(crossing_event);
   gdouble x = 0.0, y = 0.0;
   gdk_event_get_coords(event, &x, &y);
   gint scale_factor = gtk_widget_get_scale_factor(GTK_WIDGET(self));
   return fl_pointer_manager_handle_enter(
       self->pointer_manager, gdk_event_get_time(event), get_device_kind(event),
       x * scale_factor, y * scale_factor);
 }

References fl_pointer_manager_handle_enter(), and get_device_kind().

Referenced by fl_view_init().

◆ fl_renderable_iface_init()

static void fl_renderable_iface_init ( FlRenderableInterface * iface )

static

Definition at line 270 of file fl_view.cc.

                                                                    {
   iface->present_layers = fl_view_present_layers;
 }

References fl_view_present_layers().

◆ fl_view_class_init()

static void fl_view_class_init ( FlViewClass * klass )

static

Definition at line 664 of file fl_view.cc.

                                                    {
   GObjectClass* object_class = G_OBJECT_CLASS(klass);
   object_class->notify = fl_view_notify;
   object_class->dispose = fl_view_dispose;
  
   GtkWidgetClass* widget_class = GTK_WIDGET_CLASS(klass);
   widget_class->realize = fl_view_realize;
   widget_class->focus_in_event = fl_view_focus_in_event;
   widget_class->key_press_event = fl_view_key_press_event;
   widget_class->key_release_event = fl_view_key_release_event;
  
   fl_view_signals[SIGNAL_FIRST_FRAME] =
       g_signal_new("first-frame", fl_view_get_type(), G_SIGNAL_RUN_LAST, 0,
                    NULL, NULL, NULL, G_TYPE_NONE, 0);
  
   gtk_widget_class_set_accessible_type(GTK_WIDGET_CLASS(klass),
                                        fl_socket_accessible_get_type());
 }

References fl_view_dispose(), fl_view_focus_in_event(), fl_view_key_press_event(), fl_view_key_release_event(), fl_view_notify(), fl_view_realize(), fl_view_signals, and SIGNAL_FIRST_FRAME.

◆ fl_view_dispose()

static void fl_view_dispose ( GObject * object )

static

Definition at line 552 of file fl_view.cc.

                                              {
   FlView* self = FL_VIEW(object);
  
   g_cancellable_cancel(self->cancellable);
  
   if (self->engine != nullptr) {
     FlMouseCursorHandler* handler =
         fl_engine_get_mouse_cursor_handler(self->engine);
     if (self->cursor_changed_cb_id != 0) {
       g_signal_handler_disconnect(handler, self->cursor_changed_cb_id);
       self->cursor_changed_cb_id = 0;
     }
  
     // Release the view ID from the engine.
     fl_engine_remove_view(self->engine, self->view_id, nullptr, nullptr,
                           nullptr);
   }
  
   if (self->on_pre_engine_restart_cb_id != 0) {
     g_signal_handler_disconnect(self->engine,
                                 self->on_pre_engine_restart_cb_id);
     self->on_pre_engine_restart_cb_id = 0;
   }
  
   if (self->update_semantics_cb_id != 0) {
     g_signal_handler_disconnect(self->engine, self->update_semantics_cb_id);
     self->update_semantics_cb_id = 0;
   }
  
   g_clear_object(&self->render_context);
   g_clear_object(&self->engine);
   g_clear_object(&self->compositor);
   g_clear_pointer(&self->background_color, gdk_rgba_free);
   g_clear_object(&self->window_state_monitor);
   g_clear_object(&self->scrolling_manager);
   g_clear_object(&self->pointer_manager);
   g_clear_object(&self->touch_manager);
   g_clear_object(&self->view_accessible);
   g_clear_object(&self->cancellable);
  
   G_OBJECT_CLASS(fl_view_parent_class)->dispose(object);
 }

References fl_engine_get_mouse_cursor_handler(), and fl_engine_remove_view().

Referenced by fl_view_class_init().

◆ fl_view_focus_in_event()

static gboolean fl_view_focus_in_event	(	GtkWidget *	widget,
		GdkEventFocus *	event
	)

static

Definition at line 642 of file fl_view.cc.

                                                              {
   FlView* self = FL_VIEW(widget);
   fl_text_input_handler_set_widget(
       fl_engine_get_text_input_handler(self->engine), widget);
   return FALSE;
 }

References fl_engine_get_text_input_handler(), and fl_text_input_handler_set_widget().

Referenced by fl_view_class_init().

◆ fl_view_get_accessible()

FlViewAccessible* fl_view_get_accessible ( FlView * view )

fl_view_get_accessible: @view: an #FlView.

Get the accessible object for this view.

Returns: an #FlViewAccessible.

Definition at line 808 of file fl_view.cc.

                                                        {
   g_return_val_if_fail(FL_IS_VIEW(self), nullptr);
   return self->view_accessible;
 }

Referenced by TEST().

◆ fl_view_get_engine()

G_MODULE_EXPORT FlEngine* fl_view_get_engine ( FlView * view )

fl_view_get_engine: @view: an #FlView.

Gets the engine being rendered in the view.

Returns: an #FlEngine.

Definition at line 790 of file fl_view.cc.

                                                            {
   g_return_val_if_fail(FL_IS_VIEW(self), nullptr);
   return self->engine;
 }

Referenced by fl_application_activate(), and TEST().

◆ fl_view_get_id()

G_MODULE_EXPORT int64_t fl_view_get_id ( FlView * view )

fl_view_get_id: @view: an #FlView.

Gets the Flutter view ID used by this view.

Returns: a view ID or -1 if now ID assigned.

Definition at line 796 of file fl_view.cc.

                                      {
   g_return_val_if_fail(FL_IS_VIEW(self), -1);
   return self->view_id;
 }

Referenced by create_regular(), and TEST().

◆ fl_view_get_registrar_for_plugin()

static FlPluginRegistrar* fl_view_get_registrar_for_plugin	(	FlPluginRegistry *	registry,
		const gchar *	name
	)

static

Definition at line 260 of file fl_view.cc.

                        {
   FlView* self = FL_VIEW(registry);
  
   return fl_plugin_registrar_new(self,
                                  fl_engine_get_binary_messenger(self->engine),
                                  fl_engine_get_texture_registrar(self->engine));
 }

References fl_engine_get_binary_messenger(), fl_engine_get_texture_registrar(), and fl_plugin_registrar_new().

Referenced by fl_view_plugin_registry_iface_init().

◆ fl_view_init()

static void fl_view_init ( FlView * self )

static

Definition at line 702 of file fl_view.cc.

                                        {
   self->cancellable = g_cancellable_new();
  
   gtk_widget_set_can_focus(GTK_WIDGET(self), TRUE);
  
   self->view_id = -1;
  
   GdkRGBA default_background = {
       .red = 0.0, .green = 0.0, .blue = 0.0, .alpha = 1.0};
   self->background_color = gdk_rgba_copy(&default_background);
  
   self->event_box = gtk_event_box_new();
   gtk_widget_set_hexpand(self->event_box, TRUE);
   gtk_widget_set_vexpand(self->event_box, TRUE);
   gtk_container_add(GTK_CONTAINER(self), self->event_box);
   gtk_widget_show(self->event_box);
   gtk_widget_add_events(self->event_box,
                         GDK_POINTER_MOTION_MASK | GDK_BUTTON_PRESS_MASK |
                             GDK_BUTTON_RELEASE_MASK | GDK_SCROLL_MASK |
                             GDK_SMOOTH_SCROLL_MASK | GDK_TOUCH_MASK);
  
   g_signal_connect_swapped(self->event_box, "button-press-event",
                            G_CALLBACK(button_press_event_cb), self);
   g_signal_connect_swapped(self->event_box, "button-release-event",
                            G_CALLBACK(button_release_event_cb), self);
   g_signal_connect_swapped(self->event_box, "scroll-event",
                            G_CALLBACK(scroll_event_cb), self);
   g_signal_connect_swapped(self->event_box, "motion-notify-event",
                            G_CALLBACK(motion_notify_event_cb), self);
   g_signal_connect_swapped(self->event_box, "enter-notify-event",
                            G_CALLBACK(enter_notify_event_cb), self);
   g_signal_connect_swapped(self->event_box, "leave-notify-event",
                            G_CALLBACK(leave_notify_event_cb), self);
   GtkGesture* zoom = gtk_gesture_zoom_new(self->event_box);
   g_signal_connect_swapped(zoom, "begin", G_CALLBACK(gesture_zoom_begin_cb),
                            self);
   g_signal_connect_swapped(zoom, "scale-changed",
                            G_CALLBACK(gesture_zoom_update_cb), self);
   g_signal_connect_swapped(zoom, "end", G_CALLBACK(gesture_zoom_end_cb), self);
   GtkGesture* rotate = gtk_gesture_rotate_new(self->event_box);
   g_signal_connect_swapped(rotate, "begin",
                            G_CALLBACK(gesture_rotation_begin_cb), self);
   g_signal_connect_swapped(rotate, "angle-changed",
                            G_CALLBACK(gesture_rotation_update_cb), self);
   g_signal_connect_swapped(rotate, "end", G_CALLBACK(gesture_rotation_end_cb),
                            self);
   g_signal_connect_swapped(self->event_box, "touch-event",
                            G_CALLBACK(touch_event_cb), self);
  
   self->render_area = GTK_DRAWING_AREA(gtk_drawing_area_new());
   gtk_widget_show(GTK_WIDGET(self->render_area));
   gtk_container_add(GTK_CONTAINER(self->event_box),
                     GTK_WIDGET(self->render_area));
   g_signal_connect_swapped(self->render_area, "realize", G_CALLBACK(realize_cb),
                            self);
   g_signal_connect_swapped(self->render_area, "size-allocate",
                            G_CALLBACK(size_allocate_cb), self);
   g_signal_connect_swapped(self->render_area, "draw", G_CALLBACK(draw_cb),
                            self);
 }

References button_press_event_cb(), button_release_event_cb(), draw_cb(), enter_notify_event_cb(), gesture_rotation_begin_cb(), gesture_rotation_end_cb(), gesture_rotation_update_cb(), gesture_zoom_begin_cb(), gesture_zoom_end_cb(), gesture_zoom_update_cb(), leave_notify_event_cb(), motion_notify_event_cb(), realize_cb(), scroll_event_cb(), size_allocate_cb(), touch_event_cb(), and TRUE.

◆ fl_view_key_press_event()

static gboolean fl_view_key_press_event	(	GtkWidget *	widget,
		GdkEventKey *	key_event
	)

static

Definition at line 651 of file fl_view.cc.

                                                                 {
   FlView* self = FL_VIEW(widget);
   return handle_key_event(self, key_event);
 }

References handle_key_event().

Referenced by fl_view_class_init().

◆ fl_view_key_release_event()

static gboolean fl_view_key_release_event	(	GtkWidget *	widget,
		GdkEventKey *	key_event
	)

static

Definition at line 658 of file fl_view.cc.

                                                                   {
   FlView* self = FL_VIEW(widget);
   return handle_key_event(self, key_event);
 }

References handle_key_event().

Referenced by fl_view_class_init().

◆ fl_view_new()

G_MODULE_EXPORT FlView* fl_view_new ( FlDartProject * project )

FlView:

#FlView is a GTK widget that is capable of displaying a Flutter application.

The following example shows how to set up a view in a GTK application: |[ FlDartProject *project = fl_dart_project_new (); FlView *view = fl_view_new (project); gtk_widget_show (GTK_WIDGET (view)); gtk_container_add (GTK_CONTAINER (parent), view);

FlBinaryMessenger *messenger = fl_engine_get_binary_messenger (fl_view_get_engine (view)); setup_channels_or_plugins (messenger); ]| fl_view_new: @project: The project to show.

Creates a widget to show a Flutter application.

Returns: a new #FlView.

Definition at line 763 of file fl_view.cc.

                                                             {
   g_autoptr(FlEngine) engine = fl_engine_new(project);
   FlView* self = FL_VIEW(g_object_new(fl_view_get_type(), nullptr));
  
   self->view_id = flutter::kFlutterImplicitViewId;
   self->engine = FL_ENGINE(g_object_ref(engine));
  
   setup_engine(self);
  
   fl_engine_set_implicit_view(engine, FL_RENDERABLE(self));
  
   return self;
 }

References fl_engine_new(), fl_engine_set_implicit_view(), g_autoptr(), and setup_engine().

Referenced by fl_application_activate(), and TEST().

◆ fl_view_new_for_engine()

G_MODULE_EXPORT FlView* fl_view_new_for_engine ( FlEngine * engine )

fl_view_new_for_engine: @engine: an #FlEngine.

Creates a widget to show a window in a Flutter application. The engine must be not be headless.

Returns: a new #FlView.

Definition at line 777 of file fl_view.cc.

                                                                  {
   FlView* self = FL_VIEW(g_object_new(fl_view_get_type(), nullptr));
  
   self->engine = FL_ENGINE(g_object_ref(engine));
  
   self->view_id = fl_engine_add_view(engine, FL_RENDERABLE(self), 1, 1, 1.0,
                                      self->cancellable, view_added_cb, self);
  
   setup_engine(self);
  
   return self;
 }

References fl_engine_add_view(), setup_engine(), and view_added_cb().

Referenced by create_regular(), and TEST().

◆ fl_view_notify()

static void fl_view_notify	(	GObject *	object,
		GParamSpec *	pspec
	)

static

Definition at line 540 of file fl_view.cc.

                                                                {
   FlView* self = FL_VIEW(object);
  
   if (strcmp(pspec->name, "scale-factor") == 0) {
     handle_geometry_changed(self);
   }
  
   if (G_OBJECT_CLASS(fl_view_parent_class)->notify != nullptr) {
     G_OBJECT_CLASS(fl_view_parent_class)->notify(object, pspec);
   }
 }

References handle_geometry_changed(), and pspec.

Referenced by fl_view_class_init().

◆ fl_view_plugin_registry_iface_init()

static void fl_view_plugin_registry_iface_init ( FlPluginRegistryInterface * iface )

static

Definition at line 274 of file fl_view.cc.

                                       {
   iface->get_registrar_for_plugin = fl_view_get_registrar_for_plugin;
 }

References fl_view_get_registrar_for_plugin().

◆ fl_view_present_layers()

static void fl_view_present_layers	(	FlRenderable *	renderable,
		const FlutterLayer **	layers,
		size_t	layers_count
	)

static

Definition at line 248 of file fl_view.cc.

                                                         {
   FlView* self = FL_VIEW(renderable);
  
   fl_compositor_present_layers(self->compositor, layers, layers_count);
  
   // Perform the redraw in the GTK thead.
   g_idle_add(redraw_cb, self);
 }

References fl_compositor_present_layers(), layers, and layers_count.

Referenced by fl_renderable_iface_init().

◆ fl_view_realize()

static void fl_view_realize ( GtkWidget * widget )

static

Definition at line 596 of file fl_view.cc.

                                                {
   FlView* self = FL_VIEW(widget);
  
   GTK_WIDGET_CLASS(fl_view_parent_class)->realize(widget);
  
   // Realize the child widgets.
   gtk_widget_realize(GTK_WIDGET(self->render_area));
 }

Referenced by fl_view_class_init().

◆ fl_view_set_background_color()

G_MODULE_EXPORT void fl_view_set_background_color	(	FlView *	view,
		const GdkRGBA *	color
	)

fl_view_set_background_color: @view: an #FlView. @color: a background color.

Set the background color for Flutter (defaults to black).

Definition at line 801 of file fl_view.cc.

                                                                         {
   g_return_if_fail(FL_IS_VIEW(self));
   gdk_rgba_free(self->background_color);
   self->background_color = gdk_rgba_copy(color);
 }

◆ G_DEFINE_TYPE_WITH_CODE()

G_DEFINE_TYPE_WITH_CODE	(	FlView	,
		fl_view	,
		GTK_TYPE_BOX	,
		G_IMPLEMENT_INTERFACE(fl_plugin_registry_get_type(), fl_view_plugin_registry_iface_init)
	)

Definition at line 94 of file fl_view.cc.

                                               {
   FlView* self = FL_VIEW(user_data);
  
   gtk_widget_queue_draw(GTK_WIDGET(self->render_area));
  
   if (!self->have_first_frame) {
     self->have_first_frame = TRUE;
     g_signal_emit(self, fl_view_signals[SIGNAL_FIRST_FRAME], 0);
   }
  
   return FALSE;
 }

References fl_view_signals, g_signal_emit(), SIGNAL_FIRST_FRAME, TRUE, and user_data.

◆ gesture_rotation_begin_cb()

static void gesture_rotation_begin_cb ( FlView * self )

static

Definition at line 407 of file fl_view.cc.

                                                     {
   fl_scrolling_manager_handle_rotation_begin(self->scrolling_manager);
 }

References fl_scrolling_manager_handle_rotation_begin().

Referenced by fl_view_init().

◆ gesture_rotation_end_cb()

static void gesture_rotation_end_cb ( FlView * self )

static

Definition at line 418 of file fl_view.cc.

                                                   {
   fl_scrolling_manager_handle_rotation_end(self->scrolling_manager);
 }

References fl_scrolling_manager_handle_rotation_end().

Referenced by fl_view_init().

◆ gesture_rotation_update_cb()

static void gesture_rotation_update_cb	(	FlView *	self,
		gdouble	rotation,
		gdouble	delta
	)

static

Definition at line 411 of file fl_view.cc.

                                                       {
   fl_scrolling_manager_handle_rotation_update(self->scrolling_manager,
                                               rotation);
 }

References fl_scrolling_manager_handle_rotation_update().

Referenced by fl_view_init().

◆ gesture_zoom_begin_cb()

static void gesture_zoom_begin_cb ( FlView * self )

static

Definition at line 422 of file fl_view.cc.

                                                 {
   fl_scrolling_manager_handle_zoom_begin(self->scrolling_manager);
 }

References fl_scrolling_manager_handle_zoom_begin().

Referenced by fl_view_init().

◆ gesture_zoom_end_cb()

static void gesture_zoom_end_cb ( FlView * self )

static

Definition at line 430 of file fl_view.cc.

                                               {
   fl_scrolling_manager_handle_zoom_end(self->scrolling_manager);
 }

References fl_scrolling_manager_handle_zoom_end().

Referenced by fl_view_init().

◆ gesture_zoom_update_cb()

static void gesture_zoom_update_cb	(	FlView *	self,
		gdouble	scale
	)

static

Definition at line 426 of file fl_view.cc.

                                                                 {
   fl_scrolling_manager_handle_zoom_update(self->scrolling_manager, scale);
 }

References fl_scrolling_manager_handle_zoom_update().

Referenced by fl_view_init().

◆ get_device_kind()

static FlutterPointerDeviceKind get_device_kind ( GdkEvent * event )

static

Definition at line 134 of file fl_view.cc.

                                                                  {
   GdkDevice* device = gdk_event_get_source_device(event);
   GdkInputSource source = gdk_device_get_source(device);
   switch (source) {
     case GDK_SOURCE_PEN:
     case GDK_SOURCE_ERASER:
     case GDK_SOURCE_CURSOR:
     case GDK_SOURCE_TABLET_PAD:
       return kFlutterPointerDeviceKindStylus;
     case GDK_SOURCE_TOUCHSCREEN:
       return kFlutterPointerDeviceKindTouch;
     case GDK_SOURCE_TOUCHPAD:  // trackpad device type is reserved for gestures
     case GDK_SOURCE_TRACKPOINT:
     case GDK_SOURCE_KEYBOARD:
     case GDK_SOURCE_MOUSE:
       return kFlutterPointerDeviceKindMouse;
   }
 }

Referenced by button_press_event_cb(), button_release_event_cb(), enter_notify_event_cb(), leave_notify_event_cb(), and motion_notify_event_cb().

◆ handle_geometry_changed()

static void handle_geometry_changed ( FlView * self )

static

Definition at line 176 of file fl_view.cc.

                                                   {
   GtkAllocation allocation;
   gtk_widget_get_allocation(GTK_WIDGET(self), &allocation);
   gint scale_factor = gtk_widget_get_scale_factor(GTK_WIDGET(self));
  
   // Note we can't detect if a window is moved between monitors - this
   // information is provided by Wayland but GTK only notifies us if the scale
   // has changed, so moving between two monitors of the same scale doesn't
   // provide any information.
  
   GdkWindow* window =
       gtk_widget_get_window(gtk_widget_get_toplevel(GTK_WIDGET(self)));
   // NOTE(robert-ancell) If we haven't got a window we default to display 0.
   // This is probably indicating a problem with this code in that we
   // shouldn't be generating anything until the window is created.
   // Another event with the correct display ID is generated soon after.
   // I haven't changed this code in case there are side-effects but we
   // probably shouldn't call handle_geometry_changed after the view is
   // added but only when the window is realized.
   FlutterEngineDisplayId display_id = 0;
   if (window != nullptr) {
     GdkMonitor* monitor = gdk_display_get_monitor_at_window(
         gtk_widget_get_display(GTK_WIDGET(self)), window);
     display_id = fl_display_monitor_get_display_id(
         fl_engine_get_display_monitor(self->engine), monitor);
   }
   fl_engine_send_window_metrics_event(
       self->engine, display_id, self->view_id, allocation.width * scale_factor,
       allocation.height * scale_factor, scale_factor);
 }

References fl_display_monitor_get_display_id(), fl_engine_get_display_monitor(), fl_engine_send_window_metrics_event(), and window.

Referenced by fl_view_notify(), realize_cb(), size_allocate_cb(), and view_added_cb().

◆ handle_key_event()

static gboolean handle_key_event	(	FlView *	self,
		GdkEventKey *	key_event
	)

static

Definition at line 605 of file fl_view.cc.

                                                                        {
   g_autoptr(FlKeyEvent) event = fl_key_event_new_from_gdk_event(
       gdk_event_copy(reinterpret_cast<GdkEvent*>(key_event)));
  
   fl_keyboard_manager_handle_event(
       fl_engine_get_keyboard_manager(self->engine), event, self->cancellable,
       [](GObject* object, GAsyncResult* result, gpointer user_data) {
         FlView* self = FL_VIEW(user_data);
  
         g_autoptr(FlKeyEvent) redispatch_event = nullptr;
         g_autoptr(GError) error = nullptr;
         if (!fl_keyboard_manager_handle_event_finish(
                 FL_KEYBOARD_MANAGER(object), result, &redispatch_event,
                 &error)) {
           if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
             return;
           }
  
           g_warning("Failed to handle key event: %s", error->message);
         }
  
         if (redispatch_event != nullptr) {
           if (!fl_text_input_handler_filter_keypress(
                   fl_engine_get_text_input_handler(self->engine),
                   redispatch_event)) {
             fl_keyboard_manager_add_redispatched_event(
                 fl_engine_get_keyboard_manager(self->engine), redispatch_event);
             gdk_event_put(fl_key_event_get_origin(redispatch_event));
           }
         }
       },
       self);
  
   return TRUE;
 }

References fl_engine_get_keyboard_manager(), fl_engine_get_text_input_handler(), fl_key_event_new_from_gdk_event(), fl_keyboard_manager_handle_event(), fl_text_input_handler_filter_keypress(), g_autoptr(), if(), and user_data.

Referenced by fl_view_key_press_event(), and fl_view_key_release_event().

◆ init_scrolling()

static void init_scrolling ( FlView * self )

static

Definition at line 123 of file fl_view.cc.

                                          {
   g_clear_object(&self->scrolling_manager);
   self->scrolling_manager =
       fl_scrolling_manager_new(self->engine, self->view_id);
 }

References fl_scrolling_manager_new().

Referenced by on_pre_engine_restart_cb(), and setup_engine().

◆ init_touch()

static void init_touch ( FlView * self )

static

Definition at line 129 of file fl_view.cc.

                                      {
   g_clear_object(&self->touch_manager);
   self->touch_manager = fl_touch_manager_new(self->engine, self->view_id);
 }

References fl_touch_manager_new().

Referenced by on_pre_engine_restart_cb(), and setup_engine().

◆ leave_notify_event_cb()

static gboolean leave_notify_event_cb	(	FlView *	self,
		GdkEventCrossing *	crossing_event
	)

static

Definition at line 392 of file fl_view.cc.

                                                                         {
   if (crossing_event->mode != GDK_CROSSING_NORMAL) {
     return FALSE;
   }
  
   GdkEvent* event = reinterpret_cast<GdkEvent*>(crossing_event);
   gdouble x = 0.0, y = 0.0;
   gdk_event_get_coords(event, &x, &y);
   gint scale_factor = gtk_widget_get_scale_factor(GTK_WIDGET(self));
   return fl_pointer_manager_handle_leave(
       self->pointer_manager, gdk_event_get_time(event), get_device_kind(event),
       x * scale_factor, y * scale_factor);
 }

References fl_pointer_manager_handle_leave(), and get_device_kind().

Referenced by fl_view_init().

◆ motion_notify_event_cb()

static gboolean motion_notify_event_cb	(	FlView *	self,
		GdkEventMotion *	motion_event
	)

static

Definition at line 359 of file fl_view.cc.

                                                                      {
   GdkEvent* event = reinterpret_cast<GdkEvent*>(motion_event);
   sync_modifier_if_needed(self, event);
  
   // return if touch event
   auto event_type = gdk_event_get_event_type(event);
   if (event_type == GDK_TOUCH_BEGIN || event_type == GDK_TOUCH_UPDATE ||
       event_type == GDK_TOUCH_END || event_type == GDK_TOUCH_CANCEL) {
     return FALSE;
   }
  
   gdouble x = 0.0, y = 0.0;
   gdk_event_get_coords(event, &x, &y);
   gint scale_factor = gtk_widget_get_scale_factor(GTK_WIDGET(self));
   return fl_pointer_manager_handle_motion(
       self->pointer_manager, gdk_event_get_time(event), get_device_kind(event),
       x * scale_factor, y * scale_factor);
 }

References fl_pointer_manager_handle_motion(), get_device_kind(), and sync_modifier_if_needed().

Referenced by fl_view_init().

◆ on_pre_engine_restart_cb()

static void on_pre_engine_restart_cb ( FlView * self )

static

Definition at line 242 of file fl_view.cc.

                                                    {
   init_scrolling(self);
   init_touch(self);
 }

References init_scrolling(), and init_touch().

Referenced by setup_engine().

◆ paint_background()

static void paint_background	(	FlView *	self,
		cairo_t *	cr
	)

static

Definition at line 510 of file fl_view.cc.

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

Referenced by draw_cb().

◆ realize_cb()

static void realize_cb ( FlView * self )

static

Definition at line 464 of file fl_view.cc.

                                      {
   switch (fl_engine_get_renderer_type(self->engine)) {
     case kOpenGL:
       setup_opengl(self);
       break;
     case kSoftware:
       setup_software(self);
       break;
     default:
       break;
   }
  
   if (self->view_id != flutter::kFlutterImplicitViewId) {
     setup_cursor(self);
     return;
   }
  
   GtkWidget* toplevel_window = gtk_widget_get_toplevel(GTK_WIDGET(self));
  
   self->window_state_monitor =
       fl_window_state_monitor_new(fl_engine_get_binary_messenger(self->engine),
                                   GTK_WINDOW(toplevel_window));
  
   // Handle requests by the user to close the application.
   g_signal_connect_swapped(toplevel_window, "delete-event",
                            G_CALLBACK(window_delete_event_cb), self);
  
   // Flutter engine will need to make the context current from raster thread
   // during initialization.
   fl_opengl_manager_clear_current(fl_engine_get_opengl_manager(self->engine));
  
   g_autoptr(GError) error = nullptr;
   if (!fl_engine_start(self->engine, &error)) {
     g_warning("Failed to start Flutter engine: %s", error->message);
     return;
   }
  
   setup_cursor(self);
  
   handle_geometry_changed(self);
 }

References error, fl_engine_get_binary_messenger(), fl_engine_get_opengl_manager(), fl_engine_get_renderer_type(), fl_engine_start(), fl_opengl_manager_clear_current(), fl_window_state_monitor_new(), g_autoptr(), handle_geometry_changed(), setup_cursor(), setup_opengl(), setup_software(), and window_delete_event_cb().

Referenced by fl_view_init().

◆ scroll_event_cb()

static gboolean scroll_event_cb	(	FlView *	self,
		GdkEventScroll *	event
	)

static

Definition at line 341 of file fl_view.cc.

                                                                      {
   // TODO(robert-ancell): Update to use GtkEventControllerScroll when we can
   // depend on GTK 3.24.
  
   fl_scrolling_manager_handle_scroll_event(
       self->scrolling_manager, event,
       gtk_widget_get_scale_factor(GTK_WIDGET(self)));
   return TRUE;
 }

References fl_scrolling_manager_handle_scroll_event(), and TRUE.

Referenced by fl_view_init().

◆ set_scrolling_position()

static void set_scrolling_position	(	FlView *	self,
		gdouble	x,
		gdouble	y
	)

static

Definition at line 287 of file fl_view.cc.

                                                                        {
   gint scale_factor = gtk_widget_get_scale_factor(GTK_WIDGET(self));
   fl_scrolling_manager_set_last_mouse_position(
       self->scrolling_manager, x * scale_factor, y * scale_factor);
 }

References fl_scrolling_manager_set_last_mouse_position().

Referenced by button_press_event_cb(), and button_release_event_cb().

◆ setup_cursor()

static void setup_cursor ( FlView * self )

static

Definition at line 166 of file fl_view.cc.

                                        {
   FlMouseCursorHandler* handler =
       fl_engine_get_mouse_cursor_handler(self->engine);
  
   self->cursor_changed_cb_id = g_signal_connect_swapped(
       handler, "cursor-changed", G_CALLBACK(cursor_changed_cb), self);
   cursor_changed_cb(self);
 }

References cursor_changed_cb(), and fl_engine_get_mouse_cursor_handler().

Referenced by realize_cb().

◆ setup_engine()

static void setup_engine ( FlView * self )

static

Definition at line 684 of file fl_view.cc.

                                        {
   self->view_accessible = fl_view_accessible_new(self->engine, self->view_id);
   fl_socket_accessible_embed(
       FL_SOCKET_ACCESSIBLE(gtk_widget_get_accessible(GTK_WIDGET(self))),
       atk_plug_get_id(ATK_PLUG(self->view_accessible)));
  
   self->pointer_manager = fl_pointer_manager_new(self->view_id, self->engine);
  
   init_scrolling(self);
   init_touch(self);
  
   self->on_pre_engine_restart_cb_id =
       g_signal_connect_swapped(self->engine, "on-pre-engine-restart",
                                G_CALLBACK(on_pre_engine_restart_cb), self);
   self->update_semantics_cb_id = g_signal_connect_swapped(
       self->engine, "update-semantics", G_CALLBACK(update_semantics_cb), self);
 }

References fl_pointer_manager_new(), fl_socket_accessible_embed(), fl_view_accessible_new(), init_scrolling(), init_touch(), on_pre_engine_restart_cb(), and update_semantics_cb().

Referenced by fl_view_new(), and fl_view_new_for_engine().

◆ setup_opengl()

static void setup_opengl ( FlView * self )

static

Definition at line 434 of file fl_view.cc.

                                        {
   g_autoptr(GError) error = nullptr;
  
   self->render_context = gdk_window_create_gl_context(
       gtk_widget_get_window(GTK_WIDGET(self->render_area)), &error);
   if (self->render_context == nullptr) {
     g_warning("Failed to create OpenGL context: %s", error->message);
     return;
   }
  
   if (!gdk_gl_context_realize(self->render_context, &error)) {
     g_warning("Failed to realize OpenGL context: %s", error->message);
     return;
   }
  
   // If using Wayland, then EGL is in use and we can access the frame
   // from the Flutter context using EGLImage. If not (i.e. X11 using GLX)
   // then we have to copy the texture via the CPU.
   gboolean shareable =
       GDK_IS_WAYLAND_DISPLAY(gtk_widget_get_display(GTK_WIDGET(self)));
   self->compositor = FL_COMPOSITOR(fl_compositor_opengl_new(
       fl_engine_get_task_runner(self->engine),
       fl_engine_get_opengl_manager(self->engine), shareable));
 }

References error, fl_compositor_opengl_new(), fl_engine_get_opengl_manager(), fl_engine_get_task_runner(), g_autoptr(), and shareable.

Referenced by realize_cb().

◆ setup_software()

static void setup_software ( FlView * self )

static

Definition at line 459 of file fl_view.cc.

                                          {
   self->compositor = FL_COMPOSITOR(
       fl_compositor_software_new(fl_engine_get_task_runner(self->engine)));
 }

References fl_compositor_software_new(), and fl_engine_get_task_runner().

Referenced by realize_cb().

◆ size_allocate_cb()

static void size_allocate_cb ( FlView * self )

static

Definition at line 506 of file fl_view.cc.

                                            {
   handle_geometry_changed(self);
 }

References handle_geometry_changed().

Referenced by fl_view_init().

◆ sync_modifier_if_needed()

static void sync_modifier_if_needed	(	FlView *	self,
		GdkEvent *	event
	)

static

Definition at line 279 of file fl_view.cc.

                                                                    {
   guint event_time = gdk_event_get_time(event);
   GdkModifierType event_state = static_cast<GdkModifierType>(0);
   gdk_event_get_state(event, &event_state);
   fl_keyboard_manager_sync_modifier_if_needed(
       fl_engine_get_keyboard_manager(self->engine), event_state, event_time);
 }

References fl_engine_get_keyboard_manager(), and fl_keyboard_manager_sync_modifier_if_needed().

Referenced by button_press_event_cb(), button_release_event_cb(), and motion_notify_event_cb().

◆ touch_event_cb()

static gboolean touch_event_cb	(	FlView *	self,
		GdkEventTouch *	event
	)

static

Definition at line 351 of file fl_view.cc.

                                                                    {
   fl_touch_manager_handle_touch_event(
       self->touch_manager, event,
       gtk_widget_get_scale_factor(GTK_WIDGET(self)));
   return TRUE;
 }

References fl_touch_manager_handle_touch_event(), and TRUE.

Referenced by fl_view_init().

◆ update_semantics_cb()

static void update_semantics_cb	(	FlView *	self,
		const FlutterSemanticsUpdate2 *	update
	)

static

Definition at line 227 of file fl_view.cc.

                                                                        {
   // A semantics update is routed to a particular view.
   if (update->view_id != self->view_id) {
     return;
   }
  
   fl_view_accessible_handle_update_semantics(self->view_accessible, update);
 }

References fl_view_accessible_handle_update_semantics().

Referenced by setup_engine().

◆ view_added_cb()

static void view_added_cb	(	GObject *	object,
		GAsyncResult *	result,
		gpointer	user_data
	)

static

Definition at line 207 of file fl_view.cc.

                                               {
   FlView* self = FL_VIEW(user_data);
  
   g_autoptr(GError) error = nullptr;
   if (!fl_engine_add_view_finish(FL_ENGINE(object), result, &error)) {
     if (g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
       return;
     }
  
     g_warning("Failed to add view: %s", error->message);
     // FIXME: Show on the GLArea
     return;
   }
  
   handle_geometry_changed(self);
 }

References error, fl_engine_add_view_finish(), g_autoptr(), handle_geometry_changed(), and user_data.

Referenced by fl_view_new_for_engine().

◆ window_delete_event_cb()

static gboolean window_delete_event_cb ( FlView * self )

static

Definition at line 117 of file fl_view.cc.

                                                      {
   fl_engine_request_app_exit(self->engine);
   // Stop the event from propagating.
   return TRUE;
 }

References fl_engine_request_app_exit(), and TRUE.

Referenced by realize_cb().

Variable Documentation

◆ fl_view_signals

guint fl_view_signals[LAST_SIGNAL]

static

Definition at line 87 of file fl_view.cc.

Referenced by fl_view_class_init(), and G_DEFINE_TYPE_WITH_CODE().

Classes

Enumerations

Functions

Variables

Enumeration Type Documentation

◆ anonymous enum

Function Documentation

◆ button_press_event_cb()

◆ button_release_event_cb()

◆ cursor_changed_cb()

◆ draw_cb()

◆ enter_notify_event_cb()

◆ fl_renderable_iface_init()

◆ fl_view_class_init()

◆ fl_view_dispose()

◆ fl_view_focus_in_event()

◆ fl_view_get_accessible()

◆ fl_view_get_engine()

◆ fl_view_get_id()

◆ fl_view_get_registrar_for_plugin()

◆ fl_view_init()

◆ fl_view_key_press_event()

◆ fl_view_key_release_event()

◆ fl_view_new()

◆ fl_view_new_for_engine()

◆ fl_view_notify()

◆ fl_view_plugin_registry_iface_init()

◆ fl_view_present_layers()

◆ fl_view_realize()

◆ fl_view_set_background_color()

◆ G_DEFINE_TYPE_WITH_CODE()

◆ gesture_rotation_begin_cb()

◆ gesture_rotation_end_cb()

◆ gesture_rotation_update_cb()

◆ gesture_zoom_begin_cb()

◆ gesture_zoom_end_cb()

◆ gesture_zoom_update_cb()

◆ get_device_kind()

◆ handle_geometry_changed()

◆ handle_key_event()

◆ init_scrolling()

◆ init_touch()

◆ leave_notify_event_cb()

◆ motion_notify_event_cb()

◆ on_pre_engine_restart_cb()

◆ paint_background()

◆ realize_cb()

◆ scroll_event_cb()

◆ set_scrolling_position()

◆ setup_cursor()

◆ setup_engine()

◆ setup_opengl()

◆ setup_software()

◆ size_allocate_cb()

◆ sync_modifier_if_needed()

◆ touch_event_cb()

◆ update_semantics_cb()

◆ view_added_cb()

◆ window_delete_event_cb()

Variable Documentation

◆ fl_view_signals