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90d1f05686
Implement settings channel for the Linux shell Fixes https://github.com/flutter/flutter/issues/65591
121 lines
4.8 KiB
C++
121 lines
4.8 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/shell/platform/linux/fl_settings_plugin.h"
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#include <cstring>
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#include "flutter/shell/platform/linux/public/flutter_linux/fl_basic_message_channel.h"
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#include "flutter/shell/platform/linux/public/flutter_linux/fl_json_message_codec.h"
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static constexpr char kChannelName[] = "flutter/settings";
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static constexpr char kTextScaleFactorKey[] = "textScaleFactor";
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static constexpr char kAlwaysUse24HourFormatKey[] = "alwaysUse24HourFormat";
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static constexpr char kPlatformBrightnessKey[] = "platformBrightness";
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static constexpr char kPlatformBrightnessLight[] = "light";
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static constexpr char kPlatformBrightnessDark[] = "dark";
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static constexpr char kDesktopInterfaceSchema[] = "org.gnome.desktop.interface";
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static constexpr char kDesktopGtkThemeKey[] = "gtk-theme";
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static constexpr char kDesktopTextScalingFactorKey[] = "text-scaling-factor";
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static constexpr char kDesktopClockFormatKey[] = "clock-format";
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static constexpr char kClockFormat24Hour[] = "24h";
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struct _FlSettingsPlugin {
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GObject parent_instance;
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FlBasicMessageChannel* channel;
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GSettings* interface_settings;
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};
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G_DEFINE_TYPE(FlSettingsPlugin, fl_settings_plugin, G_TYPE_OBJECT)
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// Sends the current settings to the Flutter engine.
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static void update_settings(FlSettingsPlugin* self) {
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gdouble scaling_factor = 1.0;
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gboolean always_use_24hr = FALSE;
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const gchar* platform_brightness = kPlatformBrightnessLight;
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if (self->interface_settings != nullptr) {
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scaling_factor = g_settings_get_double(self->interface_settings,
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kDesktopTextScalingFactorKey);
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g_autofree gchar* clock_format =
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g_settings_get_string(self->interface_settings, kDesktopClockFormatKey);
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always_use_24hr = g_strcmp0(clock_format, kClockFormat24Hour) == 0;
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// GTK doesn't have a specific flag for dark themes, so we have some
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// hard-coded themes for Ubuntu (Yaru) and GNOME (Adwaita).
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g_autofree gchar* gtk_theme =
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g_settings_get_string(self->interface_settings, kDesktopGtkThemeKey);
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if (g_strcmp0(gtk_theme, "Yaru-dark") == 0 ||
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g_strcmp0(gtk_theme, "Adwaita-dark") == 0) {
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platform_brightness = kPlatformBrightnessDark;
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}
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}
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g_autoptr(FlValue) message = fl_value_new_map();
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fl_value_set_string_take(message, kTextScaleFactorKey,
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fl_value_new_float(scaling_factor));
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fl_value_set_string_take(message, kAlwaysUse24HourFormatKey,
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fl_value_new_bool(always_use_24hr));
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fl_value_set_string_take(message, kPlatformBrightnessKey,
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fl_value_new_string(platform_brightness));
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fl_basic_message_channel_send(self->channel, message, nullptr, nullptr,
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nullptr);
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}
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static void fl_settings_plugin_dispose(GObject* object) {
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FlSettingsPlugin* self = FL_SETTINGS_PLUGIN(object);
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g_clear_object(&self->channel);
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g_clear_object(&self->interface_settings);
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G_OBJECT_CLASS(fl_settings_plugin_parent_class)->dispose(object);
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}
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static void fl_settings_plugin_class_init(FlSettingsPluginClass* klass) {
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G_OBJECT_CLASS(klass)->dispose = fl_settings_plugin_dispose;
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}
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static void fl_settings_plugin_init(FlSettingsPlugin* self) {}
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FlSettingsPlugin* fl_settings_plugin_new(FlBinaryMessenger* messenger) {
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g_return_val_if_fail(FL_IS_BINARY_MESSENGER(messenger), nullptr);
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FlSettingsPlugin* self =
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FL_SETTINGS_PLUGIN(g_object_new(fl_settings_plugin_get_type(), nullptr));
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g_autoptr(FlJsonMessageCodec) codec = fl_json_message_codec_new();
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self->channel = fl_basic_message_channel_new(messenger, kChannelName,
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FL_MESSAGE_CODEC(codec));
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return self;
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}
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void fl_settings_plugin_start(FlSettingsPlugin* self) {
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g_return_if_fail(FL_IS_SETTINGS_PLUGIN(self));
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// If we are on GNOME, get settings from GSettings.
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GSettingsSchemaSource* source = g_settings_schema_source_get_default();
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if (source != nullptr) {
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g_autoptr(GSettingsSchema) schema =
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g_settings_schema_source_lookup(source, kDesktopInterfaceSchema, FALSE);
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if (schema != nullptr) {
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self->interface_settings = g_settings_new_full(schema, nullptr, nullptr);
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g_signal_connect_object(
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self->interface_settings, "changed::text-scaling-factor",
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G_CALLBACK(update_settings), self, G_CONNECT_SWAPPED);
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g_signal_connect_object(self->interface_settings, "changed::clock-format",
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G_CALLBACK(update_settings), self,
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G_CONNECT_SWAPPED);
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g_signal_connect_object(self->interface_settings, "changed::gtk-theme",
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G_CALLBACK(update_settings), self,
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G_CONNECT_SWAPPED);
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}
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}
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update_settings(self);
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}
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