[console/zbrown/term-intent-2: 1/4] term-intent: special window for termapps [WIP]

[Zander Brown <zbrown src gnome org>]

commit b1622a54da6963afcdee00b5215daed7100598df
Author: Zander Brown <zbrown gnome org>
Date:   Fri Dec 10 00:04:19 2021 +0000

    term-intent: special window for termapps [WIP]

 src/kgx-term-app-window.c | 258 ++++++++++++++++++++++++++++++++++++++++++++++
 src/kgx-term-app-window.h |  48 +++++++++
 src/meson.build           |   2 +
 3 files changed, 308 insertions(+)
---
diff --git a/src/kgx-term-app-window.c b/src/kgx-term-app-window.c
new file mode 100644
index 0000000..a2555d3
--- /dev/null
+++ b/src/kgx-term-app-window.c
@@ -0,0 +1,258 @@
+/* kgx-term-app-window.c
+ *
+ * Copyright 2021 Zander Brown
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * SECTION:kgx-term-app-window
+ * @title: KgxTermAppWindow
+ * @short_description: A #KgxWindow for a specific termapp
+ */
+
+#include "kgx-config.h"
+
+#include <glib/gi18n.h>
+#include <gdk/gdk.h>
+#ifdef GDK_WINDOWING_WAYLAND
+#include <gdk/wayland/gdkwayland.h>
+#endif
+
+#include "kgx-term-app-window.h"
+
+
+G_DEFINE_TYPE (KgxTermAppWindow, kgx_term_app_window, KGX_TYPE_WINDOW)
+
+
+enum {
+  PROP_0,
+  PROP_DESKTOP_ENTRY,
+  LAST_PROP
+};
+static GParamSpec *pspecs[LAST_PROP] = { NULL, };
+
+
+static void
+kgx_term_app_window_dispose (GObject *object)
+{
+  KgxTermAppWindow *self = KGX_TERM_APP_WINDOW (object);
+
+  g_clear_object (&self->entry);
+
+  G_OBJECT_CLASS (kgx_term_app_window_parent_class)->dispose (object);
+}
+
+
+static void
+kgx_term_app_window_get_property (GObject    *object,
+                                  guint       property_id,
+                                  GValue     *value,
+                                  GParamSpec *pspec)
+{
+  KgxTermAppWindow *self = KGX_TERM_APP_WINDOW (object);
+
+  switch (property_id) {
+    case PROP_DESKTOP_ENTRY:
+      g_value_set_object (value, self->entry);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+  }
+}
+
+
+static void
+kgx_term_app_window_set_property (GObject      *object,
+                                  guint         property_id,
+                                  const GValue *value,
+                                  GParamSpec   *pspec)
+{
+  KgxTermAppWindow *self = KGX_TERM_APP_WINDOW (object);
+
+  switch (property_id) {
+    case PROP_DESKTOP_ENTRY:
+      g_clear_object (&self->entry);
+      self->entry = g_value_dup_object (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+  }
+}
+
+
+static GdkTexture *
+load_icon_texture (KgxTermAppWindow *self,
+                   GtkIconTheme     *theme,
+                   GIcon            *icon,
+                   int               scale_factor,
+                   GtkDirectionType  dir)
+{
+  g_autoptr (GtkIconPaintable) paintable = NULL;
+  g_autoptr (GFile) file = NULL;
+  g_autoptr (GdkTexture) texture = NULL;
+  g_autoptr (GError) error = NULL;
+
+  paintable = gtk_icon_theme_lookup_by_gicon (theme,
+                                              icon,
+                                              64,
+                                              scale_factor,
+                                              dir,
+                                              0);
+  file = gtk_icon_paintable_get_file (paintable);
+  if (!file) {
+    return NULL;
+  }
+
+  texture = gdk_texture_new_from_file (file, &error);
+  if (error) {
+    g_debug ("Unable to load icon (%s): %s",
+             g_file_get_uri (file),
+             error->message);
+    return NULL;
+  }
+
+  return g_steal_pointer (&texture);
+}
+
+
+static void
+setup_icon (KgxTermAppWindow *self)
+{
+  g_autolist (GdkTexture) list = NULL;
+  g_autoptr (GdkTexture) texture = NULL;
+  g_autoptr (GIcon) fallback = NULL;
+  GtkIconTheme *theme;
+  GdkDisplay *display;
+  GIcon *icon;
+  int scale_factor;
+  GtkDirectionType dir;
+  GtkNative *native;
+  GdkSurface *surface;
+
+  display = gtk_widget_get_display (GTK_WIDGET (self));
+
+  theme = gtk_icon_theme_get_for_display (display);
+  icon = g_app_info_get_icon (G_APP_INFO (self->entry));
+  scale_factor = gtk_widget_get_scale_factor (GTK_WIDGET (self));
+  dir = gtk_widget_get_direction (GTK_WIDGET (self));
+
+  texture = load_icon_texture (self, theme, icon, scale_factor, dir);
+  if (texture) {
+    list = g_list_append (list, g_steal_pointer (&texture));
+  }
+
+  fallback = g_themed_icon_new ("text-x-script");
+  texture = load_icon_texture (self, theme, fallback, scale_factor, dir);
+
+  if (texture) {
+    list = g_list_append (list, g_steal_pointer (&texture));
+  }
+
+  native = gtk_widget_get_native (GTK_WIDGET (self));
+  surface = gtk_native_get_surface (native);
+
+  gdk_toplevel_set_icon_list (GDK_TOPLEVEL (surface), list);
+}
+
+
+#ifdef GDK_WINDOWING_WAYLAND
+static void
+setup_appid (KgxTermAppWindow *self)
+{
+  g_autofree char *app_id = NULL;
+  GtkNative *native;
+  GdkSurface *surface;
+
+  native = gtk_widget_get_native (GTK_WIDGET (self));
+  surface = gtk_native_get_surface (native);
+
+  if (!GDK_IS_WAYLAND_SURFACE (surface)) {
+    return;
+  }
+
+  app_id = g_strdup (g_app_info_get_id (G_APP_INFO (self->entry)));
+
+  if (G_UNLIKELY (!app_id)) {
+    return;
+  }
+
+  if (G_LIKELY (g_str_has_suffix (app_id, ".desktop"))) {
+    size_t len = strlen (app_id);
+
+    for (size_t i = len - 1; i > 0; i--) {
+      if (app_id[i] == '.') {
+        app_id[i] = '\0';
+        break;
+      }
+    }
+  }
+
+  g_debug ("Adopting app-id ‘%s’ for surface %p", app_id, surface);
+
+  gdk_wayland_toplevel_set_application_id (GDK_TOPLEVEL (surface), app_id);
+}
+#endif
+
+
+static void
+kgx_term_app_window_map (GtkWidget *widget)
+{
+  KgxTermAppWindow *self = KGX_TERM_APP_WINDOW (widget);
+
+  GTK_WIDGET_CLASS (kgx_term_app_window_parent_class)->map (widget);
+
+  setup_icon (self);
+#ifdef GDK_WINDOWING_WAYLAND
+  setup_appid (self);
+#endif
+}
+
+
+static void
+kgx_term_app_window_class_init (KgxTermAppWindowClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->dispose = kgx_term_app_window_dispose;
+  object_class->get_property = kgx_term_app_window_get_property;
+  object_class->set_property = kgx_term_app_window_set_property;
+
+  widget_class->map = kgx_term_app_window_map;
+
+  /**
+   * KgxTermAppWindow:desktop-entry:
+   *
+   * The #GDesktopAppInfo
+   */
+  pspecs[PROP_DESKTOP_ENTRY] =
+    g_param_spec_object ("desktop-entry", "Desktop Entry", "The termapp entry",
+                         G_TYPE_DESKTOP_APP_INFO,
+                         G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
+
+  g_object_class_install_properties (object_class, LAST_PROP, pspecs);
+}
+
+
+static void
+kgx_term_app_window_init (KgxTermAppWindow *self)
+{
+  g_object_connect (self,
+                    "swapped-signal::notify::scale-factor", G_CALLBACK (setup_icon), self,
+                    "swapped-signal::direction-changed", G_CALLBACK (setup_icon), self,
+                    NULL);
+}
diff --git a/src/kgx-term-app-window.h b/src/kgx-term-app-window.h
new file mode 100644
index 0000000..71322c1
--- /dev/null
+++ b/src/kgx-term-app-window.h
@@ -0,0 +1,48 @@
+/* kgx-term-app-window.h
+ *
+ * Copyright 2021 Zander Brown
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+#include <gio/gdesktopappinfo.h>
+
+#include "kgx-window.h"
+
+G_BEGIN_DECLS
+
+#define KGX_TYPE_TERM_APP_WINDOW kgx_term_app_window_get_type ()
+
+/**
+ * KgxTermAppWindow:
+ * @entry: the #GDesktopAppInfo the window is for
+ * @cancellable: the #GCancellable for operations specific to this window
+ *
+ * Stability: Private
+ */
+struct _KgxTermAppWindow {
+  /*< private >*/
+  KgxWindow        parent_instance;
+
+  /*< public >*/
+  GDesktopAppInfo *entry;
+};
+
+G_DECLARE_FINAL_TYPE (KgxTermAppWindow, kgx_term_app_window, KGX, TERM_APP_WINDOW, KgxWindow)
+
+
+G_END_DECLS
diff --git a/src/meson.build b/src/meson.build
index f8d5358..a6f5eb9 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -17,6 +17,8 @@ kgx_sources = [
   'kgx-theme-switcher.h',
   'kgx-simple-tab.c',
   'kgx-simple-tab.h',
+  'kgx-term-app-window.c',
+  'kgx-term-app-window.h',
   'kgx-pages.c',
   'kgx-pages.h',
   'kgx-proxy-info.c',