133 lines
5.0 KiB
C++
133 lines
5.0 KiB
C++
#include "my_application.h"
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#include <flutter_linux/flutter_linux.h>
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#include "flutter/generated_plugin_registrant.h"
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struct _MyApplication {
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GtkApplication parent_instance;
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char** dart_entrypoint_arguments;
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};
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G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
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// Called when first Flutter frame received.
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static void first_frame_cb(MyApplication* self, FlView* view) {
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gtk_widget_show(gtk_widget_get_toplevel(GTK_WIDGET(view)));
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}
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// Implements GApplication::activate.
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static void my_application_activate(GApplication* application) {
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MyApplication* self = MY_APPLICATION(application);
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GtkWindow* window =
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GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
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// Let the window manager draw the window decorations (server-side
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// decorations) instead of installing a GTK header bar.
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//
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// The stock Flutter template forces a GtkHeaderBar whenever it runs on
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// Wayland. That header bar is a client-side decoration painted by GTK with
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// Adwaita metrics, so on KDE Plasma (or any non-GNOME compositor) it looks
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// out of place and noticeably thicker than the native title bar. Relying on
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// the compositor gives the native Breeze/KWin decoration on Plasma, and the
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// desktop's own title bar everywhere else.
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// The title comes from APPLICATION_TITLE in linux/CMakeLists.txt (passed as a
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// preprocessor definition by linux/runner/CMakeLists.txt), so the name lives
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// in the project configuration instead of being duplicated here.
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gtk_window_set_title(window, APPLICATION_TITLE);
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gtk_window_set_default_size(window, 1280, 720);
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g_autoptr(FlDartProject) project = fl_dart_project_new();
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fl_dart_project_set_dart_entrypoint_arguments(
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project, self->dart_entrypoint_arguments);
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FlView* view = fl_view_new(project);
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GdkRGBA background_color;
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// Background defaults to black, override it here if necessary, e.g. #00000000
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// for transparent.
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gdk_rgba_parse(&background_color, "#000000");
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fl_view_set_background_color(view, &background_color);
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gtk_widget_show(GTK_WIDGET(view));
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gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
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// Show the window when Flutter renders.
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// Requires the view to be realized so we can start rendering.
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g_signal_connect_swapped(view, "first-frame", G_CALLBACK(first_frame_cb),
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self);
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gtk_widget_realize(GTK_WIDGET(view));
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fl_register_plugins(FL_PLUGIN_REGISTRY(view));
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gtk_widget_grab_focus(GTK_WIDGET(view));
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}
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// Implements GApplication::local_command_line.
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static gboolean my_application_local_command_line(GApplication* application,
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gchar*** arguments,
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int* exit_status) {
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MyApplication* self = MY_APPLICATION(application);
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// Strip out the first argument as it is the binary name.
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self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
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g_autoptr(GError) error = nullptr;
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if (!g_application_register(application, nullptr, &error)) {
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g_warning("Failed to register: %s", error->message);
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*exit_status = 1;
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return TRUE;
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}
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g_application_activate(application);
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*exit_status = 0;
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return TRUE;
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}
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// Implements GApplication::startup.
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static void my_application_startup(GApplication* application) {
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// MyApplication* self = MY_APPLICATION(object);
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// Perform any actions required at application startup.
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G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
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}
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// Implements GApplication::shutdown.
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static void my_application_shutdown(GApplication* application) {
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// MyApplication* self = MY_APPLICATION(object);
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// Perform any actions required at application shutdown.
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G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
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}
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// Implements GObject::dispose.
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static void my_application_dispose(GObject* object) {
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MyApplication* self = MY_APPLICATION(object);
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g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
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G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
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}
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static void my_application_class_init(MyApplicationClass* klass) {
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G_APPLICATION_CLASS(klass)->activate = my_application_activate;
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G_APPLICATION_CLASS(klass)->local_command_line =
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my_application_local_command_line;
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G_APPLICATION_CLASS(klass)->startup = my_application_startup;
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G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
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G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
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}
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static void my_application_init(MyApplication* self) {}
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MyApplication* my_application_new() {
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// Set the program name to the application ID, which helps various systems
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// like GTK and desktop environments map this running application to its
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// corresponding .desktop file. This ensures better integration by allowing
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// the application to be recognized beyond its binary name.
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g_set_prgname(APPLICATION_ID);
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return MY_APPLICATION(g_object_new(my_application_get_type(),
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"application-id", APPLICATION_ID, "flags",
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G_APPLICATION_NON_UNIQUE, nullptr));
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}
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