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fl_windowing_handler.cc File Reference
`#include "flutter/shell/platform/linux/fl_windowing_handler.h"`
`#include "flutter/shell/platform/linux/fl_windowing_channel.h"`
`#include "flutter/shell/platform/linux/public/flutter_linux/fl_view.h"`

Go to the source code of this file.

## Classes
struct | FlWindowingHandlerPrivate

## Enumerations
enum | { SIGNAL_CREATE_WINDOW , LAST_SIGNAL }

## Functions
| G_DEFINE_TYPE_WITH_PRIVATE (FlWindowingHandler, fl_windowing_handler, G_TYPE_OBJECT) typedef struct
static WindowData * | window_data_new (GtkWindow *window, FlView *view)
static void | window_data_free (WindowData *data)
static void | first_frame_cb (FlView *view, WindowData *data)
static WindowData * | get_window_data (FlWindowingHandler *self, int64_t view_id)
static GtkWindow * | fl_windowing_handler_create_window (FlWindowingHandler *handler, FlView *view)
static FlMethodResponse * | create_regular (FlWindowingSize *size, FlWindowingSize *min_size, FlWindowingSize *max_size, const gchar *title, FlWindowState state, gpointer user_data)
static FlMethodResponse * | modify_regular (int64_t view_id, FlWindowingSize *size, const gchar *title, FlWindowState state, gpointer user_data)
static FlMethodResponse * | destroy_window (int64_t view_id, gpointer user_data)
static void | fl_windowing_handler_dispose (GObject *object)
static void | fl_windowing_handler_class_init (FlWindowingHandlerClass *klass)
static void | fl_windowing_handler_init (FlWindowingHandler *self)
FlWindowingHandler * | fl_windowing_handler_new (FlEngine *engine)

## Variables
static guint | signals [LAST_SIGNAL]
| WindowData
static FlWindowingChannelVTable | windowing_channel_vtable

## Enumeration Type Documentation

## ◆ anonymous enum

anonymous enum

Enumerator
SIGNAL_CREATE_WINDOW |
LAST_SIGNAL |

Definition at line 18 of file fl_windowing_handler.cc.

18 { SIGNAL_CREATE_WINDOW, LAST_SIGNAL };
LAST_SIGNAL
@ LAST_SIGNAL
Definition: fl_windowing_handler.cc:18
SIGNAL_CREATE_WINDOW
@ SIGNAL_CREATE_WINDOW
Definition: fl_windowing_handler.cc:18

## Function Documentation

## ◆ create_regular()

static FlMethodResponse* create_regular | ( | FlWindowingSize * | size,
|  | FlWindowingSize * | min_size,
|  | FlWindowingSize * | max_size,
|  | const gchar * | title,
|  | FlWindowState | state,
|  | gpointer | user_data
| ) |  |
| static

Definition at line 69 of file fl_windowing_handler.cc.

74 {
75 FlWindowingHandler* self = FL_WINDOWING_HANDLER(user_data);
76 FlWindowingHandlerPrivate* priv =
77 reinterpret_cast<FlWindowingHandlerPrivate*>(
78 fl_windowing_handler_get_instance_private(self));
79
80 g_autoptr(FlEngine) engine = FL_ENGINE(g_weak_ref_get(&priv->engine));
81 if (engine == nullptr) {
82 return FL_METHOD_RESPONSE(
83 fl_method_error_response_new("Internal error", "No engine", nullptr));
84 }
85
86 FlView* view = fl_view_new_for_engine(engine);
87 gtk_widget_show(GTK_WIDGET(view));
88
89 GtkWindow* window;
90 g_signal_emit(self, signals[SIGNAL_CREATE_WINDOW], 0, view, &window);
91 if (window == nullptr) {
92 return FL_METHOD_RESPONSE(fl_method_error_response_new(
93 "Internal error", "Failed to create window", nullptr));
94 }
95
96 gtk_window_set_default_size(GTK_WINDOW(window), size->width, size->height);
97 if (title != nullptr) {
98 gtk_window_set_title(GTK_WINDOW(window), title);
99 }
100 switch (state) {
101 case FL_WINDOW_STATE_MAXIMIZED:
102 gtk_window_maximize(GTK_WINDOW(window));
103 break;
104 case FL_WINDOW_STATE_MINIMIZED:
105 gtk_window_iconify(GTK_WINDOW(window));
106 break;
107 case FL_WINDOW_STATE_RESTORED:
108 case FL_WINDOW_STATE_UNDEFINED:
109 break;
110 }
111
112 GdkGeometry geometry;
113 GdkWindowHints geometry_mask = static_cast<GdkWindowHints>(0);
114 if (min_size != nullptr) {
115 geometry.min_width = min_size->width;
116 geometry.min_height = min_size->height;
117 geometry_mask =
118 static_cast<GdkWindowHints>(geometry_mask | GDK_HINT_MIN_SIZE);
119 }
120 if (max_size != nullptr) {
121 geometry.max_width = max_size->width;
122 geometry.max_height = max_size->height;
123 geometry_mask =
124 static_cast<GdkWindowHints>(geometry_mask | GDK_HINT_MAX_SIZE);
125 }
126 if (geometry_mask != 0) {
127 gtk_window_set_geometry_hints(GTK_WINDOW(window), nullptr, &geometry,
128 geometry_mask);
129 }
130
131 WindowData* data = window_data_new(GTK_WINDOW(window), view);
132 data->first_frame_cb_id =
133 g_signal_connect(view, "first-frame", G_CALLBACK(first_frame_cb), data);
134
135 // Make the resources for the view so rendering can start.
136 // We'll show the view when we have the first frame.
137 gtk_widget_realize(GTK_WIDGET(view));
138
139 g_hash_table_insert(priv->windows_by_view_id,
140 GINT_TO_POINTER(fl_view_get_id(view)), data);
141
142 // We don't know the current size and dimensions, so just reflect back what
143 // was requested.
144 FlWindowingSize* initial_size = size;
145 FlWindowState initial_state = state;
146 if (initial_state == FL_WINDOW_STATE_UNDEFINED) {
147 initial_state = FL_WINDOW_STATE_RESTORED;
148 }
149
150 return fl_windowing_channel_make_create_regular_response(
151 fl_view_get_id(view), initial_size, initial_state);
152 }
view
FlView * view
Definition: fl_application.cc:36
g_signal_emit
g_signal_emit(self, fl_application_signals[SIGNAL_CREATE_WINDOW], 0, view, &window)
window
return window
Definition: fl_application.cc:41
user_data
G_BEGIN_DECLS G_MODULE_EXPORT FlValue gpointer user_data
Definition: fl_event_channel.h:90
fl_method_error_response_new
G_MODULE_EXPORT FlMethodErrorResponse * fl_method_error_response_new(const gchar *code, const gchar *message, FlValue *details)
Definition: fl_method_response.cc:144
priv
FlPixelBufferTexturePrivate * priv
Definition: fl_pixel_buffer_texture.cc:30
fl_view_new_for_engine
G_MODULE_EXPORT FlView * fl_view_new_for_engine(FlEngine *engine)
Definition: fl_view.cc:825
fl_view_get_id
G_MODULE_EXPORT int64_t fl_view_get_id(FlView *self)
Definition: fl_view.cc:844
fl_windowing_channel_make_create_regular_response
FlMethodResponse * fl_windowing_channel_make_create_regular_response(int64_t view_id, FlWindowingSize *size, FlWindowState state)
Definition: fl_windowing_channel.cc:275
FlWindowState
FlWindowState
Definition: fl_windowing_channel.h:20
FL_WINDOW_STATE_UNDEFINED
@ FL_WINDOW_STATE_UNDEFINED
Definition: fl_windowing_channel.h:21
FL_WINDOW_STATE_MINIMIZED
@ FL_WINDOW_STATE_MINIMIZED
Definition: fl_windowing_channel.h:24
FL_WINDOW_STATE_MAXIMIZED
@ FL_WINDOW_STATE_MAXIMIZED
Definition: fl_windowing_channel.h:23
FL_WINDOW_STATE_RESTORED
@ FL_WINDOW_STATE_RESTORED
Definition: fl_windowing_channel.h:22
signals
static guint signals[LAST_SIGNAL]
Definition: fl_windowing_handler.cc:20
WindowData
WindowData
Definition: fl_windowing_handler.cc:30
first_frame_cb
static void first_frame_cb(FlView *view, WindowData *data)
Definition: fl_windowing_handler.cc:47
window_data_new
static WindowData * window_data_new(GtkWindow *window, FlView *view)
Definition: fl_windowing_handler.cc:32
FlWindowingHandlerPrivate
Definition: fl_windowing_handler.cc:10
FlWindowingSize
Definition: fl_windowing_channel.h:28
FlWindowingSize::height
double height
Definition: fl_windowing_channel.h:30
FlWindowingSize::width
double width
Definition: fl_windowing_channel.h:29

References first_frame_cb(), fl_method_error_response_new(), fl_view_get_id(), fl_view_new_for_engine(), FL_WINDOW_STATE_MAXIMIZED, FL_WINDOW_STATE_MINIMIZED, FL_WINDOW_STATE_RESTORED, FL_WINDOW_STATE_UNDEFINED, fl_windowing_channel_make_create_regular_response(), g_signal_emit(), FlWindowingSize::height, priv, SIGNAL_CREATE_WINDOW, signals, user_data, view, FlWindowingSize::width, window, window_data_new(), and WindowData.

## ◆ destroy_window()

static FlMethodResponse* destroy_window | ( | int64_t | view_id,
|  | gpointer | user_data
| ) |  |
| static

Definition at line 200 of file fl_windowing_handler.cc.

200 {
201 FlWindowingHandler* self = FL_WINDOWING_HANDLER(user_data);
202 FlWindowingHandlerPrivate* priv =
203 reinterpret_cast<FlWindowingHandlerPrivate*>(
204 fl_windowing_handler_get_instance_private(self));
205
206 WindowData* data = get_window_data(self, view_id);
207 if (data == nullptr) {
208 return FL_METHOD_RESPONSE(fl_method_error_response_new(
209 "Bad Arguments", "No window with given view ID", nullptr));
210 }
211
212 gtk_widget_destroy(GTK_WIDGET(data->window));
213
214 g_hash_table_remove(priv->windows_by_view_id, GINT_TO_POINTER(view_id));
215
216 return fl_windowing_channel_make_destroy_window_response();
217 }
view_id
G_BEGIN_DECLS FlutterViewId view_id
Definition: fl_view_accessible.h:49
fl_windowing_channel_make_destroy_window_response
FlMethodResponse * fl_windowing_channel_make_destroy_window_response()
Definition: fl_windowing_channel.cc:294
get_window_data
static WindowData * get_window_data(FlWindowingHandler *self, int64_t view_id)
Definition: fl_windowing_handler.cc:51

References fl_method_error_response_new(), fl_windowing_channel_make_destroy_window_response(), get_window_data(), priv, user_data, view_id, and WindowData.

## ◆ first_frame_cb()

static void first_frame_cb | ( | FlView * | view,
|  | WindowData * | data
| ) |  |
| static

Definition at line 47 of file fl_windowing_handler.cc.

47 {
48 gtk_window_present(data->window);
49 }

Referenced by create_regular().

## ◆ fl_windowing_handler_class_init()

static void fl_windowing_handler_class_init | ( | FlWindowingHandlerClass * | klass | ) |
| static

Definition at line 232 of file fl_windowing_handler.cc.

232 {
233 G_OBJECT_CLASS(klass)->dispose = fl_windowing_handler_dispose;
234
235 klass->create_window = fl_windowing_handler_create_window;
236
237 signals[SIGNAL_CREATE_WINDOW] = g_signal_new(
238 "create-window", fl_windowing_handler_get_type(), G_SIGNAL_RUN_LAST,
239 G_STRUCT_OFFSET(FlWindowingHandlerClass, create_window),
240 g_signal_accumulator_first_wins, nullptr, nullptr, GTK_TYPE_WINDOW, 1,
241 fl_view_get_type());
242 }
fl_windowing_handler_dispose
static void fl_windowing_handler_dispose(GObject *object)
Definition: fl_windowing_handler.cc:219
fl_windowing_handler_create_window
static GtkWindow * fl_windowing_handler_create_window(FlWindowingHandler *handler, FlView *view)
Definition: fl_windowing_handler.cc:60

References fl_windowing_handler_create_window(), fl_windowing_handler_dispose(), SIGNAL_CREATE_WINDOW, and signals.

## ◆ fl_windowing_handler_create_window()

static GtkWindow* fl_windowing_handler_create_window | ( | FlWindowingHandler * | handler,
|  | FlView * | view
| ) |  |
| static

Definition at line 60 of file fl_windowing_handler.cc.

62 {
63 GtkWidget* window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
64 gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
65
66 return GTK_WINDOW(window);
67 }

References view, and window.

Referenced by fl_windowing_handler_class_init().

## ◆ fl_windowing_handler_dispose()

static void fl_windowing_handler_dispose | ( | GObject * | object | ) |
| static

Definition at line 219 of file fl_windowing_handler.cc.

219 {
220 FlWindowingHandler* self = FL_WINDOWING_HANDLER(object);
221 FlWindowingHandlerPrivate* priv =
222 reinterpret_cast<FlWindowingHandlerPrivate*>(
223 fl_windowing_handler_get_instance_private(self));
224
225 g_weak_ref_clear(&priv->engine);
226 g_clear_object(&priv->channel);
227 g_clear_pointer(&priv->windows_by_view_id, g_hash_table_unref);
228
229 G_OBJECT_CLASS(fl_windowing_handler_parent_class)->dispose(object);
230 }

References priv.

Referenced by fl_windowing_handler_class_init().

## ◆ fl_windowing_handler_init()

static void fl_windowing_handler_init | ( | FlWindowingHandler * | self | ) |
| static

Definition at line 244 of file fl_windowing_handler.cc.

244 {
245 FlWindowingHandlerPrivate* priv =
246 reinterpret_cast<FlWindowingHandlerPrivate*>(
247 fl_windowing_handler_get_instance_private(self));
248
249 priv->windows_by_view_id =
250 g_hash_table_new_full(g_direct_hash, g_direct_equal, nullptr,
251 reinterpret_cast<GDestroyNotify>(window_data_free));
252 }
window_data_free
static void window_data_free(WindowData *data)
Definition: fl_windowing_handler.cc:39

References priv, and window_data_free().

## ◆ fl_windowing_handler_new()

FlWindowingHandler* fl_windowing_handler_new | ( | FlEngine * | engine | ) |

FlWindowingHandler:

#FlWindowingHandler is a handler that implements the shell side of SystemChannels.windowing from the Flutter services library. fl_windowing_handler_new: @engine: an #FlEngine.

Creates a new handler that implements SystemChannels.windowing from the Flutter services library.

Returns: a new #FlWindowingHandler

Definition at line 260 of file fl_windowing_handler.cc.

260 {
261 g_return_val_if_fail(FL_IS_ENGINE(engine), nullptr);
262
263 FlWindowingHandler* self = FL_WINDOWING_HANDLER(
264 g_object_new(fl_windowing_handler_get_type(), nullptr));
265 FlWindowingHandlerPrivate* priv =
266 reinterpret_cast<FlWindowingHandlerPrivate*>(
267 fl_windowing_handler_get_instance_private(self));
268
269 g_weak_ref_init(&priv->engine, engine);
270 priv->channel = fl_windowing_channel_new(
271 fl_engine_get_binary_messenger(engine), &windowing_channel_vtable, self);
272
273 return self;
274 }
fl_engine_get_binary_messenger
G_MODULE_EXPORT FlBinaryMessenger * fl_engine_get_binary_messenger(FlEngine *self)
Definition: fl_engine.cc:1413
fl_windowing_channel_new
FlWindowingChannel * fl_windowing_channel_new(FlBinaryMessenger *messenger, FlWindowingChannelVTable *vtable, gpointer user_data)
Definition: fl_windowing_channel.cc:257
windowing_channel_vtable
static FlWindowingChannelVTable windowing_channel_vtable
Definition: fl_windowing_handler.cc:254

References fl_engine_get_binary_messenger(), fl_windowing_channel_new(), priv, and windowing_channel_vtable.

Referenced by fl_engine_new_full(), and TEST().

## ◆ G_DEFINE_TYPE_WITH_PRIVATE()

G_DEFINE_TYPE_WITH_PRIVATE | ( | FlWindowingHandler | ,
|  | fl_windowing_handler | ,
|  | G_TYPE_OBJECT |
| ) |  |

Definition at line 22 of file fl_windowing_handler.cc.

26 {
27 GtkWindow* window;
28 FlView* view;
29 guint first_frame_cb_id;
30 } WindowData;

References view, and window.

## ◆ get_window_data()

static WindowData* get_window_data | ( | FlWindowingHandler * | self,
|  | int64_t | view_id
| ) |  |
| static

Definition at line 51 of file fl_windowing_handler.cc.

51 {
52 FlWindowingHandlerPrivate* priv =
53 reinterpret_cast<FlWindowingHandlerPrivate*>(
54 fl_windowing_handler_get_instance_private(self));
55
56 return static_cast<WindowData*>(
57 g_hash_table_lookup(priv->windows_by_view_id, GINT_TO_POINTER(view_id)));
58 }

References priv, view_id, and WindowData.

Referenced by destroy_window(), and modify_regular().

## ◆ modify_regular()

static FlMethodResponse* modify_regular | ( | int64_t | view_id,
|  | FlWindowingSize * | size,
|  | const gchar * | title,
|  | FlWindowState | state,
|  | gpointer | user_data
| ) |  |
| static

Definition at line 154 of file fl_windowing_handler.cc.

158 {
159 FlWindowingHandler* self = FL_WINDOWING_HANDLER(user_data);
160
161 WindowData* data = get_window_data(self, view_id);
162 if (data == nullptr) {
163 return FL_METHOD_RESPONSE(fl_method_error_response_new(
164 "Bad Arguments", "No window with given view ID", nullptr));
165 }
166
167 if (size != nullptr) {
168 gtk_window_resize(data->window, size->width, size->height);
169 }
170
171 if (title != nullptr) {
172 gtk_window_set_title(data->window, title);
173 }
174
175 GdkWindowState window_state;
176 switch (state) {
177 case FL_WINDOW_STATE_RESTORED:
178 if (gtk_window_is_maximized(data->window)) {
179 gtk_window_unmaximize(data->window);
180 }
181 window_state =
182 gdk_window_get_state(gtk_widget_get_window(GTK_WIDGET(data->window)));
183 if (window_state & GDK_WINDOW_STATE_ICONIFIED) {
184 gtk_window_deiconify(data->window);
185 }
186 break;
187 case FL_WINDOW_STATE_MAXIMIZED:
188 gtk_window_maximize(data->window);
189 break;
190 case FL_WINDOW_STATE_MINIMIZED:
191 gtk_window_iconify(data->window);
192 break;
193 case FL_WINDOW_STATE_UNDEFINED:
194 break;
195 }
196
197 return fl_windowing_channel_make_modify_regular_response();
198 }
fl_windowing_channel_make_modify_regular_response
FlMethodResponse * fl_windowing_channel_make_modify_regular_response()
Definition: fl_windowing_channel.cc:290

References fl_method_error_response_new(), FL_WINDOW_STATE_MAXIMIZED, FL_WINDOW_STATE_MINIMIZED, FL_WINDOW_STATE_RESTORED, FL_WINDOW_STATE_UNDEFINED, fl_windowing_channel_make_modify_regular_response(), get_window_data(), FlWindowingSize::height, user_data, view_id, FlWindowingSize::width, and WindowData.

## ◆ window_data_free()

static void window_data_free | ( | WindowData * | data | ) |
| static

Definition at line 39 of file fl_windowing_handler.cc.

39 {
40 g_signal_handler_disconnect(data->view, data->first_frame_cb_id);
41 g_object_unref(data->window);
42 g_object_unref(data->view);
43 g_free(data);
44 }

Referenced by fl_windowing_handler_init().

## ◆ window_data_new()

static WindowData* window_data_new | ( | GtkWindow * | window,
|  | FlView * | view
| ) |  |
| static

Definition at line 32 of file fl_windowing_handler.cc.

32 {
33 WindowData* data = g_new0(WindowData, 1);
34 data->window = GTK_WINDOW(g_object_ref(window));
35 data->view = FL_VIEW(g_object_ref(view));
36 return data;
37 }

References view, window, and WindowData.

Referenced by create_regular().

## Variable Documentation

## ◆ signals

guint signals[LAST_SIGNAL]
| static

Definition at line 20 of file fl_windowing_handler.cc.

Referenced by create_regular(), and fl_windowing_handler_class_init().

## ◆ WindowData

WindowData

Definition at line 30 of file fl_windowing_handler.cc.

Referenced by create_regular(), destroy_window(), get_window_data(), modify_regular(), and window_data_new().

## ◆ windowing_channel_vtable

FlWindowingChannelVTable windowing_channel_vtable
| static

Initial value:
= {
.create_regular = create_regular,
.modify_regular = modify_regular,
.destroy_window = destroy_window,
}
destroy_window
static FlMethodResponse * destroy_window(int64_t view_id, gpointer user_data)
Definition: fl_windowing_handler.cc:200
modify_regular
static FlMethodResponse * modify_regular(int64_t view_id, FlWindowingSize *size, const gchar *title, FlWindowState state, gpointer user_data)
Definition: fl_windowing_handler.cc:154
create_regular
static FlMethodResponse * create_regular(FlWindowingSize *size, FlWindowingSize *min_size, FlWindowingSize *max_size, const gchar *title, FlWindowState state, gpointer user_data)
Definition: fl_windowing_handler.cc:69

Definition at line 254 of file fl_windowing_handler.cc.

Referenced by fl_windowing_handler_new().