| Flutter Linux Embedder |

fl_application.cc
Go to the documentation of this file.
1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "flutter/shell/platform/linux/public/flutter_linux/fl_application.h"
6
7 #include <gtk/gtk.h>
8 #ifdef GDK_WINDOWING_X11
9 #include <gdk/gdkx.h>
10 #endif
11
12 #include "flutter/shell/platform/linux/public/flutter_linux/fl_dart_project.h"
13 #include "flutter/shell/platform/linux/public/flutter_linux/fl_plugin_registry.h"
14 #include "flutter/shell/platform/linux/public/flutter_linux/fl_view.h"
15
16 struct FlApplicationPrivate {
17 // Arguments to pass to Dart.
18 gchar** dart_entrypoint_arguments;
19 };
20
21 #define FL_APPLICATION_GET_PRIVATE(app) \
22 ((FlApplicationPrivate*)fl_application_get_instance_private( \
23 FL_APPLICATION(app)))
24
25 enum { SIGNAL_REGISTER_PLUGINS, SIGNAL_CREATE_WINDOW, LAST_SIGNAL };
26
27 static guint fl_application_signals[LAST_SIGNAL];
28
29 G_DEFINE_TYPE_WITH_CODE(FlApplication,
30 fl_application,
31 GTK_TYPE_APPLICATION,
32 G_ADD_PRIVATE(FlApplication))
33
34 // Called when the first frame is received.
35 static void first_frame_cb(FlApplication* self, FlView* view) {
36 GtkWidget* window = gtk_widget_get_toplevel(GTK_WIDGET(view));
37
38 // Show the main window.
39 if (window != nullptr && GTK_IS_WINDOW(window)) {
40 gtk_window_present(GTK_WINDOW(window));
41 }
42 }
43
44 // Default implementation of FlApplication::register_plugins
45 static void fl_application_register_plugins(FlApplication* self,
46 FlPluginRegistry* registry) {}
47
48 // Default implementation of FlApplication::create_window
49 static GtkWindow* fl_application_create_window(FlApplication* self,
50 FlView* view) {
51 GtkApplicationWindow* window =
52 GTK_APPLICATION_WINDOW(gtk_application_window_new(GTK_APPLICATION(self)));
53
54 // Use a header bar when running in GNOME as this is the common style used
55 // by applications and is the setup most users will be using (e.g. Ubuntu
56 // desktop).
57 // If running on X and not using GNOME then just use a traditional title bar
58 // in case the window manager does more exotic layout, e.g. tiling.
59 // If running on Wayland assume the header bar will work (may need changing
60 // if future cases occur).
61 gboolean use_header_bar = TRUE;
62 #ifdef GDK_WINDOWING_X11
63 GdkScreen* screen = gtk_window_get_screen(GTK_WINDOW(window));
64 if (GDK_IS_X11_SCREEN(screen)) {
65 const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
66 if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
67 use_header_bar = FALSE;
68 }
69 }
70 #endif
71 if (use_header_bar) {
72 GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
73 gtk_widget_show(GTK_WIDGET(header_bar));
74 gtk_header_bar_set_show_close_button(header_bar, TRUE);
75 gtk_window_set_titlebar(GTK_WINDOW(window), GTK_WIDGET(header_bar));
76 }
77
78 gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
79
80 return GTK_WINDOW(window);
81 }
82
83 // Implements GApplication::activate.
84 static void fl_application_activate(GApplication* application) {
85 FlApplication* self = FL_APPLICATION(application);
86 FlApplicationPrivate* priv = FL_APPLICATION_GET_PRIVATE(self);
87
88 g_autoptr(FlDartProject) project = fl_dart_project_new();
89 fl_dart_project_set_dart_entrypoint_arguments(
90 project, priv->dart_entrypoint_arguments);
91
92 FlView* view = fl_view_new(project);
93 g_signal_connect_swapped(view, "first-frame", G_CALLBACK(first_frame_cb),
94 self);
95 gtk_widget_show(GTK_WIDGET(view));
96
97 GtkWindow* window;
98 g_signal_emit(self, fl_application_signals[SIGNAL_CREATE_WINDOW], 0, view,
99 &window);
100
101 // Make the resources for the view so rendering can start.
102 // We'll show the view when we have the first frame.
103 gtk_widget_realize(GTK_WIDGET(view));
104
105 g_signal_emit(self, fl_application_signals[SIGNAL_REGISTER_PLUGINS], 0,
106 FL_PLUGIN_REGISTRY(view));
107 }
108
109 // Implements GApplication::local_command_line.
110 static gboolean fl_application_local_command_line(GApplication* application,
111 gchar*** arguments,
112 int* exit_status) {
113 FlApplication* self = FL_APPLICATION(application);
114 FlApplicationPrivate* priv = FL_APPLICATION_GET_PRIVATE(self);
115
116 // Strip out the first argument as it is the binary name.
117 priv->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
118
119 g_autoptr(GError) error = nullptr;
120 if (!g_application_register(application, nullptr, &error)) {
121 g_warning("Failed to register: %s", error->message);
122 *exit_status = 1;
123 return TRUE;
124 }
125
126 // This will only run on the primary instance or this instance with
127 // G_APPLICATION_NON_UNIQUE
128 g_application_activate(application);
129 *exit_status = 0;
130
131 return TRUE;
132 }
133
134 // Implements GObject::dispose.
135 static void fl_application_dispose(GObject* object) {
136 FlApplication* self = FL_APPLICATION(object);
137 FlApplicationPrivate* priv = FL_APPLICATION_GET_PRIVATE(self);
138
139 g_clear_pointer(&priv->dart_entrypoint_arguments, g_strfreev);
140
141 G_OBJECT_CLASS(fl_application_parent_class)->dispose(object);
142 }
143
144 static void fl_application_class_init(FlApplicationClass* klass) {
145 G_APPLICATION_CLASS(klass)->activate = fl_application_activate;
146 G_APPLICATION_CLASS(klass)->local_command_line =
147 fl_application_local_command_line;
148 G_OBJECT_CLASS(klass)->dispose = fl_application_dispose;
149
150 klass->register_plugins = fl_application_register_plugins;
151 klass->create_window = fl_application_create_window;
152
153 fl_application_signals[SIGNAL_REGISTER_PLUGINS] = g_signal_new(
154 "register-plugins", fl_application_get_type(), G_SIGNAL_RUN_LAST,
155 G_STRUCT_OFFSET(FlApplicationClass, register_plugins), nullptr, nullptr,
156 nullptr, G_TYPE_NONE, 1, fl_plugin_registry_get_type());
157 fl_application_signals[SIGNAL_CREATE_WINDOW] = g_signal_new(
158 "create-window", fl_application_get_type(), G_SIGNAL_RUN_LAST,
159 G_STRUCT_OFFSET(FlApplicationClass, create_window),
160 g_signal_accumulator_first_wins, nullptr, nullptr, GTK_TYPE_WINDOW, 1,
161 fl_view_get_type());
162 }
163
164 static void fl_application_init(FlApplication* self) {}
165
166 G_MODULE_EXPORT
167 FlApplication* fl_application_new(const gchar* application_id,
168 GApplicationFlags flags) {
169 return FL_APPLICATION(g_object_new(fl_application_get_type(),
170 "application-id", application_id, "flags",
171 flags, nullptr));
172 }
flags
FlutterSemanticsFlag flags
Definition: fl_accessible_node.cc:106
view
FlView * view
Definition: fl_application.cc:35
fl_application_dispose
static void fl_application_dispose(GObject *object)
Definition: fl_application.cc:135
fl_application_init
static void fl_application_init(FlApplication *self)
Definition: fl_application.cc:164
fl_application_signals
static guint fl_application_signals[LAST_SIGNAL]
Definition: fl_application.cc:27
fl_application_local_command_line
static gboolean fl_application_local_command_line(GApplication *application, gchar ***arguments, int *exit_status)
Definition: fl_application.cc:110
LAST_SIGNAL
@ LAST_SIGNAL
Definition: fl_application.cc:25
SIGNAL_CREATE_WINDOW
@ SIGNAL_CREATE_WINDOW
Definition: fl_application.cc:25
SIGNAL_REGISTER_PLUGINS
@ SIGNAL_REGISTER_PLUGINS
Definition: fl_application.cc:25
fl_application_create_window
static GtkWindow * fl_application_create_window(FlApplication *self, FlView *view)
Definition: fl_application.cc:49
fl_application_new
G_MODULE_EXPORT FlApplication * fl_application_new(const gchar *application_id, GApplicationFlags flags)
Definition: fl_application.cc:167
FL_APPLICATION_GET_PRIVATE
#define FL_APPLICATION_GET_PRIVATE(app)
Definition: fl_application.cc:21
fl_application_register_plugins
static void fl_application_register_plugins(FlApplication *self, FlPluginRegistry *registry)
Definition: fl_application.cc:45
fl_application_class_init
static void fl_application_class_init(FlApplicationClass *klass)
Definition: fl_application.cc:144
fl_application_activate
static void fl_application_activate(GApplication *application)
Definition: fl_application.cc:84
G_DEFINE_TYPE_WITH_CODE
G_DEFINE_TYPE_WITH_CODE(FlApplication, fl_application, GTK_TYPE_APPLICATION, G_ADD_PRIVATE(FlApplication)) static void first_frame_cb(FlApplication *self
fl_application.h
fl_dart_project_new
G_MODULE_EXPORT FlDartProject * fl_dart_project_new()
Definition: fl_dart_project.cc:50
fl_dart_project_set_dart_entrypoint_arguments
G_MODULE_EXPORT void fl_dart_project_set_dart_entrypoint_arguments(FlDartProject *self, char **argv)
Definition: fl_dart_project.cc:110
fl_dart_project.h
priv
FlPixelBufferTexturePrivate * priv
Definition: fl_pixel_buffer_texture.cc:30
TRUE
return TRUE
Definition: fl_pixel_buffer_texture_test.cc:53
error
const uint8_t uint32_t uint32_t GError ** error
Definition: fl_pixel_buffer_texture_test.cc:40
fl_plugin_registry.h
fl_view_new
G_MODULE_EXPORT FlView * fl_view_new(FlDartProject *project)
Definition: fl_view.cc:775
fl_view.h
first_frame_cb
static void first_frame_cb(FlView *view, gboolean *first_frame_emitted)
Definition: fl_view_test.cc:13
FlApplicationPrivate
Definition: fl_application.cc:16
FlApplicationPrivate::dart_entrypoint_arguments
gchar ** dart_entrypoint_arguments
Definition: fl_application.cc:18