[gnome-flashback] desktop: add GfIcon

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 04b90bf10b77c6f2f417f1841ee92b308a8e4491
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Thu Oct 31 17:03:23 2019 +0200

    desktop: add GfIcon

 configure.ac                           |   2 +
 gnome-flashback/libdesktop/Makefile.am |   2 +
 gnome-flashback/libdesktop/gf-icon.c   | 238 +++++++++++++++++++++++++++++++++
 gnome-flashback/libdesktop/gf-icon.h   |  36 +++++
 4 files changed, 278 insertions(+)
---
diff --git a/configure.ac b/configure.ac
index 78d565f..29d1f80 100644
--- a/configure.ac
+++ b/configure.ac
@@ -93,6 +93,7 @@ LIBGNOME_DESKTOP_REQUIRED=3.12.0
 CANBERRA_REQUIRED=0.13
 GLIB_REQUIRED=2.44.0
 GSETTINGS_DESKTOP_SCHEMAS_REQUIRED=3.31.0
+PANGO_REQUIRED=1.44.0
 POLKIT_AGENT_REQUIRED=0.97
 POLKIT_GOBJECT_REQUIRED=0.97
 IBUS_REQUIRED=1.5.2
@@ -156,6 +157,7 @@ PKG_CHECK_MODULES([DESKTOP], [
   gio-2.0 >= $GLIB_REQUIRED
   gnome-desktop-3.0 >= $LIBGNOME_DESKTOP_REQUIRED
   gtk+-3.0 >= $GTK_REQUIRED
+  pango >= $PANGO_REQUIRED
 ])
 
 PKG_CHECK_MODULES([END_SESSION_DIALOG], [
diff --git a/gnome-flashback/libdesktop/Makefile.am b/gnome-flashback/libdesktop/Makefile.am
index 54dc5ab..46f5d01 100644
--- a/gnome-flashback/libdesktop/Makefile.am
+++ b/gnome-flashback/libdesktop/Makefile.am
@@ -25,6 +25,8 @@ libdesktop_la_SOURCES = \
        gf-desktop.h \
        gf-icon-view.c \
        gf-icon-view.h \
+       gf-icon.c \
+       gf-icon.h \
        gf-monitor-view.c \
        gf-monitor-view.h \
        $(BUILT_SOURCES) \
diff --git a/gnome-flashback/libdesktop/gf-icon.c b/gnome-flashback/libdesktop/gf-icon.c
new file mode 100644
index 0000000..a10188a
--- /dev/null
+++ b/gnome-flashback/libdesktop/gf-icon.c
@@ -0,0 +1,238 @@
+/*
+ * Copyright (C) 2019 Alberts Muktupāvels
+ *
+ * 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/>.
+ */
+
+#include "config.h"
+#include "gf-icon.h"
+
+struct _GfIcon
+{
+  GtkButton  parent;
+
+  GFile     *file;
+  GFileInfo *info;
+
+  guint      icon_size;
+
+  GtkWidget *image;
+  GtkWidget *label;
+
+  gboolean   selected;
+};
+
+enum
+{
+  PROP_0,
+
+  PROP_FILE,
+  PROP_INFO,
+
+  PROP_ICON_SIZE,
+
+  LAST_PROP
+};
+
+static GParamSpec *icon_properties[LAST_PROP] = { NULL };
+
+G_DEFINE_TYPE (GfIcon, gf_icon, GTK_TYPE_BUTTON)
+
+static void
+update_state (GfIcon *self)
+{
+  GtkStateFlags state;
+
+  state = gtk_widget_get_state_flags (GTK_WIDGET (self));
+  state &= ~GTK_STATE_FLAG_SELECTED;
+
+  if (self->selected)
+    state |= GTK_STATE_FLAG_SELECTED;
+
+  gtk_widget_set_state_flags (GTK_WIDGET (self), state, TRUE);
+}
+
+static void
+gf_icon_constructed (GObject *object)
+{
+  GfIcon *self;
+  GIcon *icon;
+  const char *name;
+
+  self = GF_ICON (object);
+
+  G_OBJECT_CLASS (gf_icon_parent_class)->constructed (object);
+
+  icon = g_file_info_get_icon (self->info);
+  gtk_image_set_from_gicon (GTK_IMAGE (self->image), icon, GTK_ICON_SIZE_DIALOG);
+  gtk_image_set_pixel_size (GTK_IMAGE (self->image), self->icon_size);
+
+  name = g_file_info_get_name (self->info);
+  gtk_label_set_text (GTK_LABEL (self->label), name);
+}
+
+static void
+gf_icon_dispose (GObject *object)
+{
+  GfIcon *self;
+
+  self = GF_ICON (object);
+
+  g_clear_object (&self->file);
+  g_clear_object (&self->info);
+
+  G_OBJECT_CLASS (gf_icon_parent_class)->dispose (object);
+}
+
+static void
+gf_icon_set_property (GObject      *object,
+                      guint         property_id,
+                      const GValue *value,
+                      GParamSpec   *pspec)
+{
+  GfIcon *self;
+
+  self = GF_ICON (object);
+
+  switch (property_id)
+    {
+      case PROP_FILE:
+        g_assert (self->file == NULL);
+        self->file = g_value_dup_object (value);
+        break;
+
+      case PROP_INFO:
+        g_assert (self->info == NULL);
+        self->info = g_value_dup_object (value);
+        break;
+
+      case PROP_ICON_SIZE:
+        self->icon_size = g_value_get_uint (value);
+        gtk_image_set_pixel_size (GTK_IMAGE (self->image), self->icon_size);
+        break;
+
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+        break;
+    }
+}
+
+static void
+install_properties (GObjectClass *object_class)
+{
+  icon_properties[PROP_FILE] =
+    g_param_spec_object ("file",
+                         "file",
+                         "file",
+                         G_TYPE_FILE,
+                         G_PARAM_CONSTRUCT_ONLY |
+                         G_PARAM_WRITABLE |
+                         G_PARAM_EXPLICIT_NOTIFY |
+                         G_PARAM_STATIC_STRINGS);
+
+  icon_properties[PROP_INFO] =
+    g_param_spec_object ("info",
+                         "info",
+                         "info",
+                         G_TYPE_FILE_INFO,
+                         G_PARAM_CONSTRUCT_ONLY |
+                         G_PARAM_WRITABLE |
+                         G_PARAM_EXPLICIT_NOTIFY |
+                         G_PARAM_STATIC_STRINGS);
+
+  icon_properties[PROP_ICON_SIZE] =
+    g_param_spec_uint ("icon-size",
+                       "icon-size",
+                       "icon-size",
+                       16, 128, 48,
+                       G_PARAM_CONSTRUCT |
+                       G_PARAM_WRITABLE |
+                       G_PARAM_STATIC_STRINGS);
+
+  g_object_class_install_properties (object_class, LAST_PROP, icon_properties);
+}
+
+static void
+gf_icon_class_init (GfIconClass *self_class)
+{
+  GObjectClass *object_class;
+  GtkWidgetClass *widget_class;
+
+  object_class = G_OBJECT_CLASS (self_class);
+  widget_class = GTK_WIDGET_CLASS (self_class);
+
+  object_class->constructed = gf_icon_constructed;
+  object_class->dispose = gf_icon_dispose;
+  object_class->set_property = gf_icon_set_property;
+
+  install_properties (object_class);
+
+  gtk_widget_class_set_css_name (widget_class, "gf-icon");
+}
+
+static void
+gf_icon_init (GfIcon *self)
+{
+  GtkWidget *box;
+  GtkLabel *label;
+  PangoAttrList *attrs;
+
+  box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
+  gtk_container_add (GTK_CONTAINER (self), box);
+  gtk_widget_show (box);
+
+  self->image = gtk_image_new ();
+  gtk_box_pack_start (GTK_BOX (box), self->image, FALSE, FALSE, 0);
+  gtk_widget_show (self->image);
+
+  self->label = gtk_label_new (NULL);
+  gtk_box_pack_start (GTK_BOX (box), self->label, TRUE, TRUE, 0);
+  gtk_widget_show (self->label);
+
+  label = GTK_LABEL (self->label);
+
+  gtk_label_set_lines (label, 2);
+  gtk_label_set_line_wrap (label, TRUE);
+  gtk_label_set_line_wrap_mode (label, PANGO_WRAP_WORD_CHAR);
+  gtk_label_set_ellipsize (label, PANGO_ELLIPSIZE_END);
+  gtk_label_set_justify (label, GTK_JUSTIFY_CENTER);
+  gtk_label_set_yalign (label, 0.0);
+
+  attrs = pango_attr_list_new ();
+  pango_attr_list_insert (attrs, pango_attr_insert_hyphens_new (FALSE));
+
+  gtk_label_set_attributes (label, attrs);
+  pango_attr_list_unref (attrs);
+}
+
+GtkWidget *
+gf_icon_new (GFile     *file,
+             GFileInfo *info)
+{
+  return g_object_new (GF_TYPE_ICON,
+                       "file", file,
+                       "info", info,
+                       NULL);
+}
+
+void
+gf_icon_set_selected (GfIcon   *self,
+                      gboolean  selected)
+{
+  if (self->selected == selected)
+    return;
+
+  self->selected = selected;
+  update_state (self);
+}
diff --git a/gnome-flashback/libdesktop/gf-icon.h b/gnome-flashback/libdesktop/gf-icon.h
new file mode 100644
index 0000000..64950d4
--- /dev/null
+++ b/gnome-flashback/libdesktop/gf-icon.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 Alberts Muktupāvels
+ *
+ * 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/>.
+ */
+
+#ifndef GF_ICON_H
+#define GF_ICON_H
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define GF_TYPE_ICON (gf_icon_get_type ())
+G_DECLARE_FINAL_TYPE (GfIcon, gf_icon, GF, ICON, GtkButton)
+
+GtkWidget *gf_icon_new          (GFile     *file,
+                                 GFileInfo *info);
+
+void       gf_icon_set_selected (GfIcon    *self,
+                                 gboolean   selected);
+
+G_END_DECLS
+
+#endif