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‎LICENSE

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MIT License
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Copyright (c) 2024 Igalia S.L.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.md

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A GTK implementation of WPE platform

‎meson.build

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project(
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'wpe-platform-gtk', 'c',
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version: '0.0.1',
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license: 'LGPL2.1+',
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meson_version: '>= 0.60.0',
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default_options: ['c_std=c11']
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)
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prefix = get_option('prefix')
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libdir = join_paths(prefix, get_option('libdir'))
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wpe_platform_dep = dependency('wpe-platform-2.0', version: '>= 2.45.2')
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gmodule_dep = dependency('gmodule-2.0', version: '>= 2.70.0')
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gtk_dep = dependency('gtk4', version: '>= 4.15.0')
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wpe_platform_module_dir = wpe_platform_dep.get_variable('moduledir', pkgconfig_define: ['libdir', join_paths(prefix, libdir)])
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subdir('src')

‎src/meson.build

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sources = files(
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'wpe-display-gtk.c',
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'wpe-drawing-area.c',
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'wpe-keymap-gtk.c',
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'wpe-monitor-gtk.c',
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'wpe-platform-gtk-module.c',
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'wpe-view-gtk.c'
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)
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module = shared_module(
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'giowpeplatform-gtk',
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sources: sources,
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dependencies: [wpe_platform_dep, gmodule_dep, gtk_dep],
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install: true,
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install_dir: wpe_platform_module_dir
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)
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‎src/wpe-display-gtk.c

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/*
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* Copyright (c) 2024 Igalia S.L.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "wpe-display-gtk.h"
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#include "wpe-monitor-gtk-private.h"
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#include "wpe-view-gtk.h"
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#include <epoxy/egl.h>
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#ifdef GDK_WINDOWING_WAYLAND
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#include <gdk/wayland/gdkwayland.h>
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#endif
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#ifdef GDK_WINDOWING_X11
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#include <gdk/x11/gdkx.h>
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#endif
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#ifndef EGL_DRM_RENDER_NODE_FILE_EXT
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#define EGL_DRM_RENDER_NODE_FILE_EXT 0x3377
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#endif
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struct _WPEDisplayGtk {
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WPEDisplay parent;
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GdkDisplay *display;
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EGLDisplay egl_display;
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char *drm_device;
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char *drm_render_node;
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GPtrArray *monitors;
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};
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G_DEFINE_DYNAMIC_TYPE_EXTENDED(WPEDisplayGtk, wpe_display_gtk, WPE_TYPE_DISPLAY, G_TYPE_FLAG_FINAL, {})
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static void wpe_display_gtk_finalize(GObject *object)
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{
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WPEDisplayGtk *display_gtk = WPE_DISPLAY_GTK(object);
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g_clear_pointer(&display_gtk->drm_device, g_free);
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g_clear_pointer(&display_gtk->drm_render_node, g_free);
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g_clear_pointer(&display_gtk->monitors, g_ptr_array_unref);
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G_OBJECT_CLASS(wpe_display_gtk_parent_class)->finalize(object);
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}
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static void wpe_display_gtk_monitors_changed(WPEDisplayGtk *display_gtk, guint index, guint n_removed, guint n_added, GListModel *monitors)
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{
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for (guint i = 0; i < n_removed; i++)
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g_ptr_array_remove_index(display_gtk->monitors, index);
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for (guint i = 0; i < n_added; i++) {
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GdkMonitor *monitor = GDK_MONITOR(g_list_model_get_item(monitors, index + i));
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g_ptr_array_add(display_gtk->monitors, wpe_monitor_gtk_create(monitor));
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g_object_unref(monitor);
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}
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}
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static void wpe_display_gtk_setup_monitors(WPEDisplayGtk *display_gtk)
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{
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GListModel *monitors = gdk_display_get_monitors(display_gtk->display);
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guint n_monitors = g_list_model_get_n_items(monitors);
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display_gtk->monitors = g_ptr_array_new_full(n_monitors, g_object_unref);
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for (guint i = 0; i < n_monitors; i++) {
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GdkMonitor *monitor = GDK_MONITOR(g_list_model_get_item(monitors, i));
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g_ptr_array_add(display_gtk->monitors, wpe_monitor_gtk_create(monitor));
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g_object_unref(monitor);
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}
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g_signal_connect_object(monitors, "items-changed", G_CALLBACK(wpe_display_gtk_monitors_changed), display_gtk, G_CONNECT_SWAPPED);
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}
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static gboolean wpe_display_gtk_connect(WPEDisplay *display, GError **error)
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{
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WPEDisplayGtk *display_gtk = WPE_DISPLAY_GTK(display);
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if (!gtk_init_check()) {
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g_set_error_literal(error, WPE_DISPLAY_ERROR, WPE_DISPLAY_ERROR_CONNECTION_FAILED, "Failed to initialize GTK");
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return FALSE;
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}
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display_gtk->display = gdk_display_get_default();
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if (!display_gtk->display) {
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g_set_error_literal(error, WPE_DISPLAY_ERROR, WPE_DISPLAY_ERROR_CONNECTION_FAILED, "Failed to connect to default GDK display");
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return FALSE;
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}
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#ifdef GDK_WINDOWING_WAYLAND
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if (GDK_IS_WAYLAND_DISPLAY(display_gtk->display))
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display_gtk->egl_display = gdk_wayland_display_get_egl_display(display_gtk->display);
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#endif
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#ifdef GDK_WINDOWING_X11
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if (GDK_IS_X11_DISPLAY(display_gtk->display))
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display_gtk->egl_display = gdk_x11_display_get_egl_display(display_gtk->display);
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#endif
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if (display_gtk->egl_display == EGL_NO_DISPLAY) {
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g_set_error_literal(error, WPE_DISPLAY_ERROR, WPE_DISPLAY_ERROR_CONNECTION_FAILED, "Failed to get GTK EGL display");
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display_gtk->display = NULL;
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return FALSE;
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}
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EGLDeviceEXT egl_device;
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if (eglQueryDisplayAttribEXT(display_gtk->egl_display, EGL_DEVICE_EXT, (EGLAttrib*)&egl_device)) {
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const char *extensions = eglQueryDeviceStringEXT(egl_device, EGL_EXTENSIONS);
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if (epoxy_extension_in_string(extensions, "EGL_EXT_device_drm"))
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display_gtk->drm_device = g_strdup(eglQueryDeviceStringEXT(egl_device, EGL_DRM_DEVICE_FILE_EXT));
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if (epoxy_extension_in_string(extensions, "EGL_EXT_device_drm_render_node"))
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display_gtk->drm_render_node = g_strdup(eglQueryDeviceStringEXT(egl_device, EGL_DRM_RENDER_NODE_FILE_EXT));
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}
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wpe_display_gtk_setup_monitors(display_gtk);
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return TRUE;
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}
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static gpointer wpe_display_gtk_get_egl_display(WPEDisplay *display, GError **error)
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{
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return WPE_DISPLAY_GTK(display)->egl_display;
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}
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static WPEView *wpe_display_gtk_create_view(WPEDisplay *display)
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{
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WPEDisplayGtk *display_gtk = WPE_DISPLAY_GTK(display);
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if (!display_gtk->display)
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return NULL;
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WPEViewGtk *view = WPE_VIEW_GTK(wpe_view_gtk_new(display_gtk));
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/* FIXME: create the toplevel conditionally. */
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GtkWindow *win = GTK_WINDOW(gtk_window_new());
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gtk_window_set_default_size(win, 1024, 768);
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gtk_window_set_child(win, wpe_view_gtk_get_widget(view));
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gtk_window_present(win);
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return WPE_VIEW(view);
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}
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static WPEBufferDMABufFormats *wpe_display_gtk_get_preferred_dma_buf_formats(WPEDisplay *display)
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{
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WPEDisplayGtk *display_gtk = WPE_DISPLAY_GTK(display);
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if (!display_gtk->display)
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return NULL;
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GdkDmabufFormats *formats = gdk_display_get_dmabuf_formats(display_gtk->display);
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gsize n_formats = gdk_dmabuf_formats_get_n_formats(formats);
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if (!n_formats)
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return NULL;
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WPEBufferDMABufFormatsBuilder *builder = wpe_buffer_dma_buf_formats_builder_new(NULL);
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wpe_buffer_dma_buf_formats_builder_append_group(builder, NULL, WPE_BUFFER_DMA_BUF_FORMAT_USAGE_RENDERING);
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for (gsize i = 0; i < n_formats; i++) {
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guint32 fourcc;
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guint64 modifier;
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gdk_dmabuf_formats_get_format(formats, i, &fourcc, &modifier);
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wpe_buffer_dma_buf_formats_builder_append_format(builder, fourcc, modifier);
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}
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return wpe_buffer_dma_buf_formats_builder_end(builder);
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}
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const char *wpe_display_gtk_get_drm_device(WPEDisplay *display)
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{
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return WPE_DISPLAY_GTK(display)->drm_device;
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}
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const char *wpe_display_gtk_get_drm_render_node(WPEDisplay *display)
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{
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return WPE_DISPLAY_GTK(display)->drm_render_node;
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}
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static guint wpe_display_gtk_get_n_monitors(WPEDisplay *display)
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{
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WPEDisplayGtk *display_gtk = WPE_DISPLAY_GTK(display);
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if (!display_gtk->monitors)
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return 0;
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return display_gtk->monitors->len;
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}
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static WPEMonitor *wpe_display_gtk_get_monitor(WPEDisplay *display, guint index)
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{
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WPEDisplayGtk *display_gtk = WPE_DISPLAY_GTK(display);
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if (!display_gtk->monitors)
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return NULL;
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return index < display_gtk->monitors->len ? g_ptr_array_index(display_gtk->monitors, index) : NULL;
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}
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static void wpe_display_gtk_class_init(WPEDisplayGtkClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS(klass);
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object_class->finalize = wpe_display_gtk_finalize;
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WPEDisplayClass *display_class = WPE_DISPLAY_CLASS(klass);
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display_class->connect = wpe_display_gtk_connect;
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display_class->get_egl_display = wpe_display_gtk_get_egl_display;
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display_class->create_view = wpe_display_gtk_create_view;
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display_class->get_preferred_dma_buf_formats = wpe_display_gtk_get_preferred_dma_buf_formats;
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display_class->get_drm_device = wpe_display_gtk_get_drm_device;
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display_class->get_drm_render_node = wpe_display_gtk_get_drm_render_node;
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display_class->get_n_monitors = wpe_display_gtk_get_n_monitors;
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display_class->get_monitor = wpe_display_gtk_get_monitor;
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}
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static void wpe_display_gtk_class_finalize(WPEDisplayGtkClass *klass)
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{
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}
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static void wpe_display_gtk_init(WPEDisplayGtk *display)
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{
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display->egl_display = EGL_NO_DISPLAY;
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}
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GdkDisplay *wpe_display_gtk_get_gdk_display(WPEDisplayGtk *display)
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{
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g_return_val_if_fail(WPE_IS_DISPLAY_GTK(display), NULL);
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return display->display;
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}
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void wpe_display_gtk_register(GIOModule *module)
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{
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wpe_display_gtk_register_type(G_TYPE_MODULE(module));
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if (!module)
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g_io_extension_point_register(WPE_DISPLAY_EXTENSION_POINT_NAME);
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g_io_extension_point_implement(WPE_DISPLAY_EXTENSION_POINT_NAME, WPE_TYPE_DISPLAY_GTK, "wpe-display-gtk", 200);
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}

‎src/wpe-display-gtk.h

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/*
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* Copyright (c) 2024 Igalia S.L.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
6+
* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8+
* copies of the Software, and to permit persons to whom the Software is
9+
* furnished to do so, subject to the following conditions:
10+
*
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* The above copyright notice and this permission notice shall be included in all
12+
* copies or substantial portions of the Software.
13+
*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18+
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19+
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _WPE_DISPLAY_GTK_H_
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#define _WPE_DISPLAY_GTK_H_
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#include <gio/gio.h>
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#include <gtk/gtk.h>
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#include <wpe/wpe-platform.h>
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G_BEGIN_DECLS
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#define WPE_TYPE_DISPLAY_GTK (wpe_display_gtk_get_type())
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G_DECLARE_FINAL_TYPE(WPEDisplayGtk, wpe_display_gtk, WPE, DISPLAY_GTK, WPEDisplay)
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void wpe_display_gtk_register(GIOModule *module);
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GdkDisplay *wpe_display_gtk_get_gdk_display (WPEDisplayGtk *display);
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G_END_DECLS
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#endif /* _WPE_DISPLAY_GTK_H_ */

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