static CoglRenderer *
clutter_backend_win32_get_renderer (ClutterBackend *backend,
GError **error)
{
CoglRenderer *renderer;
CLUTTER_NOTE (BACKEND, "Creating a new WGL renderer");
renderer = cogl_renderer_new ();
cogl_renderer_set_winsys_id (renderer, COGL_WINSYS_ID_WGL);
/* We don't want Cogl to install its default event handler because
* we'll handle them manually */
cogl_win32_renderer_set_event_retrieval_enabled (renderer, FALSE);
return renderer;
}
CoglContext *
cogl_sdl_context_new (int type, CoglError **error)
{
CoglRenderer *renderer = cogl_renderer_new ();
CoglDisplay *display;
cogl_renderer_set_winsys_id (renderer, COGL_WINSYS_ID_SDL);
cogl_sdl_renderer_set_event_type (renderer, type);
if (!cogl_renderer_connect (renderer, error))
return NULL;
display = cogl_display_new (renderer, NULL);
if (!cogl_display_setup (display, error))
return NULL;
return cogl_context_new (display, error);
}
static CoglRenderer *
clutter_backend_wayland_get_renderer (ClutterBackend *backend,
GError **error)
{
ClutterBackendWayland *backend_wayland = CLUTTER_BACKEND_WAYLAND (backend);
CoglRenderer *renderer;
CLUTTER_NOTE (BACKEND, "Creating a new wayland renderer");
renderer = cogl_renderer_new ();
cogl_wayland_renderer_set_event_dispatch_enabled (renderer, !_no_event_dispatch);
cogl_renderer_set_winsys_id (renderer, COGL_WINSYS_ID_EGL_WAYLAND);
cogl_wayland_renderer_set_foreign_display (renderer,
backend_wayland->wayland_display);
return renderer;
}
static CoglRenderer *
clutter_backend_gdk_get_renderer (ClutterBackend *backend,
GError **error)
{
ClutterBackendGdk *backend_gdk = CLUTTER_BACKEND_GDK (backend);
CoglRenderer *renderer = cogl_renderer_new ();
#if defined(GDK_WINDOWING_X11) && defined(COGL_HAS_XLIB_SUPPORT)
if (GDK_IS_X11_DISPLAY (backend_gdk->display))
{
Display *xdisplay = gdk_x11_display_get_xdisplay (backend_gdk->display);
cogl_xlib_renderer_set_foreign_display (renderer, xdisplay);
}
else
#endif
#if defined(GDK_WINDOWING_WIN32)
if (GDK_IS_WIN32_DISPLAY (backend_gdk->display))
{
/* Force a WGL winsys on windows */
cogl_renderer_set_winsys_id (renderer, COGL_WINSYS_ID_WGL);
}
else
#endif
{
g_set_error (error, CLUTTER_INIT_ERROR,
CLUTTER_INIT_ERROR_BACKEND,
_("Could not find a suitable CoglWinsys for a GdkDisplay of type %s"),
G_OBJECT_TYPE_NAME (backend_gdk->display));
cogl_object_unref (renderer);
return NULL;
}
return renderer;
}
CoglOnscreen* ImGui_ImplGtk3Cogl_Init(GtkWidget* widget,
void (*callback)(CoglOnscreen *onscreen, void *data),
void *data)
{
g_clear_pointer(&g_GtkWidget, g_object_unref);
g_clear_pointer(&g_GdkWindow, g_object_unref);
g_clear_pointer(&g_Framebuffer, cogl_object_unref);
g_clear_pointer(&g_Context, cogl_object_unref);
g_GtkWidget = GTK_WIDGET(g_object_ref(widget));
gtk_widget_realize(widget);
GdkWindow *parent_window = gtk_widget_get_window(widget);
GtkAllocation allocation;
gtk_widget_get_allocation(widget, &allocation);
g_Callbacks = get_backend_callbacks(parent_window);
GdkWindowAttr attributes;
memset(&attributes, 0, sizeof(attributes));
attributes.x = 0;
attributes.y = 0;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.window_type = g_Callbacks->winsys == COGL_WINSYS_ID_EGL_WAYLAND ?
GDK_WINDOW_SUBSURFACE : GDK_WINDOW_CHILD;
GdkDisplay *display = gdk_window_get_display(parent_window);
attributes.visual = gtk_widget_get_visual(widget);
g_GdkWindow = gdk_window_new(parent_window, &attributes,
GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL);
gdk_window_set_transient_for(g_GdkWindow, parent_window);
gdk_window_set_pass_through(g_GdkWindow, TRUE);
cairo_rectangle_int_t empty_rect;
memset(&empty_rect, 0, sizeof(empty_rect));
cairo_region_t *input_region = cairo_region_create_rectangle(&empty_rect);
gdk_window_input_shape_combine_region(g_GdkWindow, input_region, 0, 0);
cairo_region_destroy(input_region);
cairo_region_t *region = get_window_region(g_GdkWindow);
gdk_window_set_opaque_region(g_GdkWindow, region);
cairo_region_destroy(region);
CoglRenderer *renderer = cogl_renderer_new();
cogl_renderer_set_winsys_id(renderer, g_Callbacks->winsys);
g_Callbacks->init(renderer, display, g_GdkWindow);
gdk_window_ensure_native(g_GdkWindow);
g_Context = cogl_context_new(cogl_display_new(renderer, NULL), NULL);
CoglOnscreen *onscreen = cogl_onscreen_new(g_Context, 1, 1);
cogl_object_unref(renderer);
g_Callbacks->resize(g_GdkWindow, onscreen,
allocation.width, allocation.height,
allocation.x, allocation.y);
gtk_widget_add_events(widget, EVENT_MASK);
g_signal_connect(widget, "event", G_CALLBACK(handle_gdk_event), NULL);
g_signal_connect(widget, "size-allocate", G_CALLBACK(handle_allocate), NULL);
g_Callbacks->set_window(onscreen, g_GdkWindow);
if (!cogl_framebuffer_allocate(COGL_FRAMEBUFFER(onscreen), NULL))
g_warning("Unable to allocate framebuffer");
g_Framebuffer = COGL_FRAMEBUFFER(onscreen);
ImGuiIO& io = ImGui::GetIO();
for (int i = 0; i < ImGuiKey_COUNT; i++)
{
io.KeyMap[i] = i;
}
io.SetClipboardTextFn = ImGui_ImplGtk3Cogl_SetClipboardText;
io.GetClipboardTextFn = ImGui_ImplGtk3Cogl_GetClipboardText;
io.ClipboardUserData = gtk_widget_get_clipboard(g_GtkWidget,
GDK_SELECTION_CLIPBOARD);
g_Callback = callback;
g_CallbackData = data;
GdkFrameClock *clock = gdk_window_get_frame_clock(g_GdkWindow);
g_signal_connect(clock, "paint", G_CALLBACK(handle_repaint), NULL);
gdk_frame_clock_request_phase(clock, GDK_FRAME_CLOCK_PHASE_PAINT);
gdk_window_show(g_GdkWindow);
return COGL_ONSCREEN(g_Framebuffer);
}
