[libgd/wip/rishi/main-box: 8/11] Add GdMainIconBox
- From: Debarshi Ray <debarshir src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [libgd/wip/rishi/main-box: 8/11] Add GdMainIconBox
- Date: Wed, 21 Dec 2016 08:35:29 +0000 (UTC)
commit 3861cd6f089e0e2bc3c47281309d13c6a42ae3c9
Author: Debarshi Ray <debarshir gnome org>
Date: Wed Nov 23 16:46:50 2016 +0100
Add GdMainIconBox
It is GdMainBoxGeneric implementation that uses GtkFlowBox to render
multiple GdMainBoxItems in a grid of GdMainIconBoxChildren.
https://bugzilla.gnome.org/show_bug.cgi?id=774914
libgd/gd-main-icon-box.c | 970 ++++++++++++++++++++++++++++++++++++++++++++++
libgd/gd-main-icon-box.h | 44 ++
2 files changed, 1014 insertions(+), 0 deletions(-)
---
diff --git a/libgd/gd-main-icon-box.c b/libgd/gd-main-icon-box.c
new file mode 100644
index 0000000..21fa6af
--- /dev/null
+++ b/libgd/gd-main-icon-box.c
@@ -0,0 +1,970 @@
+/*
+ * Copyright (c) 2016 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2 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 Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Author: Debarshi Ray <debarshir gnome org>
+ *
+ */
+
+#include <math.h>
+
+#include <cairo.h>
+#include <gio/gio.h>
+
+#include "gd-icon-utils.h"
+#include "gd-main-icon-box.h"
+#include "gd-main-icon-box-child.h"
+#include "gd-main-box-child.h"
+#include "gd-main-box-generic.h"
+#include "gd-main-box-item.h"
+
+#define MAIN_ICON_BOX_DND_ICON_OFFSET 20
+
+typedef struct _GdMainIconBoxPrivate GdMainIconBoxPrivate;
+
+struct _GdMainIconBoxPrivate
+{
+ GListModel *model;
+ gboolean dnd_started;
+ gboolean key_pressed;
+ gboolean key_shift_pressed;
+ gboolean left_button_released;
+ gboolean left_button_shift_released;
+ gboolean selection_changed;
+ gboolean selection_mode;
+ gchar *last_selected_id;
+ gdouble dnd_start_x;
+ gdouble dnd_start_y;
+ gint dnd_button;
+};
+
+enum
+{
+ PROP_LAST_SELECTED_ID = 1,
+ PROP_MODEL,
+ PROP_SELECTION_MODE,
+ NUM_PROPERTIES
+};
+
+static void gd_main_box_generic_interface_init (GdMainBoxGenericInterface *iface);
+G_DEFINE_TYPE_WITH_CODE (GdMainIconBox, gd_main_icon_box, GTK_TYPE_FLOW_BOX,
+ G_ADD_PRIVATE (GdMainIconBox)
+ G_IMPLEMENT_INTERFACE (GD_TYPE_MAIN_BOX_GENERIC,
gd_main_box_generic_interface_init))
+
+static void
+gd_main_icon_box_update_last_selected_id (GdMainIconBox *self, GdMainBoxChild *child)
+{
+ GdMainIconBoxPrivate *priv;
+ GdMainBoxItem *item;
+ const gchar *id = NULL;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ if (child != NULL)
+ {
+ item = gd_main_box_child_get_item (child);
+ id = gd_main_box_item_get_id (item);
+ }
+
+ if (g_strcmp0 (priv->last_selected_id, id) != 0)
+ {
+ g_free (priv->last_selected_id);
+ priv->last_selected_id = g_strdup (id);
+ g_object_notify (G_OBJECT (self), "last-selected-id");
+ }
+}
+
+GtkWidget *
+gd_main_icon_box_create_widget_func (gpointer item, gpointer user_data)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (user_data);
+ GdMainIconBoxPrivate *priv;
+ GtkWidget *child;
+
+ g_return_val_if_fail (GD_IS_MAIN_BOX_ITEM (item), NULL);
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ child = gd_main_icon_box_child_new (GD_MAIN_BOX_ITEM (item), priv->selection_mode);
+ gtk_widget_show_all (child);
+
+ return child;
+}
+
+static GdMainBoxChild *
+gd_main_icon_box_get_child_at_index (GdMainBoxGeneric *generic, gint index)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (generic);
+ GdMainIconBoxPrivate *priv;
+ GtkFlowBoxChild *child;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ child = gtk_flow_box_get_child_at_index (GTK_FLOW_BOX (self), index);
+ return GD_MAIN_BOX_CHILD (child);
+}
+
+static const gchar *
+gd_main_icon_box_get_last_selected_id (GdMainBoxGeneric *generic)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (generic);
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+ return priv->last_selected_id;
+}
+
+static GListModel *
+gd_main_icon_box_get_model (GdMainBoxGeneric *generic)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (generic);
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+ return priv->model;
+}
+
+static GList *
+gd_main_icon_box_get_selected_children (GdMainBoxGeneric *generic)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (generic);
+ GdMainIconBoxPrivate *priv;
+ GList *selected_children;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ selected_children = gtk_flow_box_get_selected_children (GTK_FLOW_BOX (self));
+ return selected_children;
+}
+
+static gboolean
+gd_main_icon_box_get_selection_mode (GdMainIconBox *self)
+{
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+ return priv->selection_mode;
+}
+
+static void
+gd_main_icon_box_select_all_generic (GdMainBoxGeneric *generic)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (generic);
+ g_signal_emit_by_name (self, "select-all");
+}
+
+static void
+gd_main_icon_box_select_child (GdMainBoxGeneric *generic, GdMainBoxChild *child)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (generic);
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+ gtk_flow_box_select_child (GTK_FLOW_BOX (self), GTK_FLOW_BOX_CHILD (child));
+}
+
+static void
+gd_main_icon_box_set_model (GdMainIconBox *self, GListModel *model)
+{
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ if (!g_set_object (&priv->model, model))
+ return;
+
+ gtk_flow_box_bind_model (GTK_FLOW_BOX (self),
+ priv->model,
+ gd_main_icon_box_create_widget_func,
+ self,
+ NULL);
+
+ g_object_notify (G_OBJECT (self), "model");
+}
+
+static void
+gd_main_icon_box_set_selection_mode (GdMainIconBox *self, gboolean selection_mode)
+{
+ GdMainIconBoxPrivate *priv;
+ gint i;
+ gint n_items;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ if (priv->selection_mode == selection_mode)
+ return;
+
+ gd_main_icon_box_update_last_selected_id (self, NULL);
+
+ priv->selection_mode = selection_mode;
+ if (priv->selection_mode)
+ gtk_flow_box_set_selection_mode (GTK_FLOW_BOX (self), GTK_SELECTION_MULTIPLE);
+ else
+ gtk_flow_box_set_selection_mode (GTK_FLOW_BOX (self), GTK_SELECTION_NONE);
+
+ /* Work around https://bugzilla.gnome.org/show_bug.cgi?id=775525. */
+ n_items = (gint) g_list_model_get_n_items (G_LIST_MODEL (priv->model));
+ for (i = 0; i < n_items; i++)
+ {
+ GtkFlowBoxChild *child;
+
+ child = gtk_flow_box_get_child_at_index (GTK_FLOW_BOX (self), i);
+ gd_main_box_child_set_selection_mode (GD_MAIN_BOX_CHILD (child), priv->selection_mode);
+ }
+
+ g_object_notify (G_OBJECT (self), "last-selected-id");
+ g_object_notify (G_OBJECT (self), "selection-mode");
+}
+
+static void
+gd_main_icon_box_unselect_all_generic (GdMainBoxGeneric *generic)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (generic);
+ g_signal_emit_by_name (self, "unselect-all");
+}
+
+static void
+gd_main_icon_box_unselect_child (GdMainBoxGeneric *generic, GdMainBoxChild *child)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (generic);
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+ gtk_flow_box_unselect_child (GTK_FLOW_BOX (self), GTK_FLOW_BOX_CHILD (child));
+}
+
+static void
+gd_main_icon_box_activate_cursor_child (GtkFlowBox *flow_box)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (flow_box);
+ GdMainIconBoxPrivate *priv;
+ GdkEvent *event = NULL;
+ gboolean initiating = FALSE;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ /* Use GtkFlowBox::activate-cursor-child instead of
+ * GtkWidget::key-press-event to catch key presses because it is
+ * easier to filter out non-activation keys.
+ */
+
+ event = gtk_get_current_event ();
+ if (event == NULL)
+ goto out;
+
+ if (event->type != GDK_KEY_PRESS)
+ goto out;
+
+ if (!priv->selection_mode && (event->key.state & GDK_CONTROL_MASK) != 0)
+ {
+ g_signal_emit_by_name (self, "selection-mode-request");
+ initiating = TRUE;
+ }
+
+ if (priv->selection_mode)
+ {
+ if (!initiating && (event->key.state & GDK_SHIFT_MASK) != 0)
+ priv->key_shift_pressed = TRUE;
+
+ priv->key_pressed = TRUE;
+ }
+
+ out:
+ GTK_FLOW_BOX_CLASS (gd_main_icon_box_parent_class)->activate_cursor_child (flow_box);
+ g_clear_pointer (&event, (GDestroyNotify) gdk_event_free);
+}
+
+static gboolean
+gd_main_icon_box_button_press_event (GtkWidget *widget, GdkEventButton *event)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (widget);
+ GdMainIconBoxPrivate *priv;
+ GtkFlowBoxChild *child;
+ gboolean res;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ if (event->type != GDK_BUTTON_PRESS)
+ {
+ res = GDK_EVENT_STOP;
+ goto out;
+ }
+
+ if (event->button != GDK_BUTTON_PRIMARY)
+ goto default_behavior;
+
+ child = gtk_flow_box_get_child_at_pos (GTK_FLOW_BOX (self), (gint) event->x, (gint) event->y);
+ if (child == NULL)
+ goto default_behavior;
+
+ if (priv->selection_mode && !gtk_flow_box_child_is_selected (child))
+ goto default_behavior;
+
+ priv->dnd_button = (gint) event->button;
+ priv->dnd_start_x = event->x;
+ priv->dnd_start_y = event->y;
+
+ default_behavior:
+ res = GTK_WIDGET_CLASS (gd_main_icon_box_parent_class)->button_press_event (widget, event);
+
+ out:
+ return res;
+}
+
+static gboolean
+gd_main_icon_box_button_release_event (GtkWidget *widget, GdkEventButton *event)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (widget);
+ GdMainIconBoxPrivate *priv;
+ GtkFlowBoxChild *child = NULL;
+ gboolean initiating = FALSE;
+ gboolean res;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ priv->dnd_button = -1;
+ priv->dnd_start_x = -1.0;
+ priv->dnd_start_y = -1.0;
+ priv->dnd_started = FALSE;
+
+ if (event->type != GDK_BUTTON_RELEASE)
+ {
+ res = GDK_EVENT_STOP;
+ goto out;
+ }
+
+ if (!priv->selection_mode &&
+ (event->button == GDK_BUTTON_PRIMARY && (event->state & GDK_CONTROL_MASK) != 0 ||
+ event->button == GDK_BUTTON_SECONDARY))
+ {
+ g_signal_emit_by_name (self, "selection-mode-request");
+ initiating = TRUE;
+ }
+
+ if (priv->selection_mode)
+ {
+ if (event->button == GDK_BUTTON_PRIMARY)
+ {
+ /* GtkFlowBox doesn't do range selection. It will simply
+ * select a single child for shift + left-click. We need to
+ * detect it so that we can handle it later.
+ *
+ * However, range selection is only possible if we were
+ * already in the selection mode. Therefore, skip it if we
+ * have just requested the selection mode.
+ */
+ if (!initiating && (event->state & GDK_SHIFT_MASK) != 0)
+ priv->left_button_shift_released = TRUE;
+
+ priv->left_button_released = TRUE;
+ }
+ else if (event->button == GDK_BUTTON_SECONDARY)
+ {
+ /* GtkFlowBox completely ignores the right mouse
+ * button.
+ */
+
+ child = gtk_flow_box_get_child_at_pos (GTK_FLOW_BOX (self), (gint) event->x, (gint) event->y);
+ if (child != NULL)
+ {
+ gd_main_box_generic_toggle_selection_for_child (GD_MAIN_BOX_GENERIC (self),
+ GD_MAIN_BOX_CHILD (child),
+ (!initiating &&
+ (event->state & GDK_SHIFT_MASK) != 0));
+ }
+ }
+ }
+
+ /* This is for right-clicks and rubberband selection.
+ *
+ * Rubberband selection is unlike other modes of selection because
+ * GtkFlowBox::selected-children-changed is emitted before the mouse
+ * button is released.
+ */
+ if (priv->selection_changed)
+ {
+ g_signal_emit_by_name (self, "selection-changed");
+ gd_main_icon_box_update_last_selected_id (self, GD_MAIN_BOX_CHILD (child));
+ priv->selection_changed = FALSE;
+ }
+
+ res = GTK_WIDGET_CLASS (gd_main_icon_box_parent_class)->button_release_event (widget, event);
+
+ out:
+ return res;
+}
+
+static void
+gd_main_icon_box_child_activated (GtkFlowBox *flow_box, GtkFlowBoxChild *child)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (flow_box);
+ GdMainIconBoxPrivate *priv;
+ GdkEvent *event = NULL;
+
+ g_return_if_fail (GD_IS_MAIN_BOX_CHILD (child));
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ /* GtkFlowBox might emit child-activated in the middle of a
+ * DnD. See https://bugzilla.gnome.org/show_bug.cgi?id=776306
+ */
+ if (priv->dnd_started)
+ goto out;
+
+ if (!priv->selection_mode)
+ {
+ g_signal_emit_by_name (self, "item-activated", GD_MAIN_BOX_CHILD (child));
+ goto out;
+ }
+
+ event = gtk_get_current_event ();
+ if (event == NULL)
+ goto out;
+
+ if (priv->left_button_released && !priv->selection_changed)
+ {
+ /* If a selected child is left-clicked, GtkFlowBox will activate
+ * it without unselecting it.
+ */
+ gd_main_box_generic_toggle_selection_for_child (GD_MAIN_BOX_GENERIC (self),
+ GD_MAIN_BOX_CHILD (child),
+ FALSE); /* One cannot unselect a range. */
+ priv->left_button_released = FALSE;
+ g_signal_emit_by_name (self, "selection-changed");
+ }
+ else if (priv->key_pressed && !priv->selection_changed)
+ {
+ /* If a selected child is activated by a keybinding, GtkFlowBox
+ * will not unselect it.
+ */
+ gd_main_box_generic_toggle_selection_for_child (GD_MAIN_BOX_GENERIC (self), GD_MAIN_BOX_CHILD (child),
FALSE);
+ priv->key_pressed = FALSE;
+ g_signal_emit_by_name (self, "selection-changed");
+ }
+ else if (priv->left_button_shift_released || priv->key_shift_pressed)
+ {
+ /* GtkFlowBox doesn't do range selection and simply selects a
+ * single child. We handle it by unselecting the child and then
+ * selecting the range.
+ */
+ gd_main_box_generic_toggle_selection_for_child (GD_MAIN_BOX_GENERIC (self), GD_MAIN_BOX_CHILD (child),
FALSE);
+ priv->left_button_shift_released = FALSE;
+ priv->key_shift_pressed = FALSE;
+ gd_main_box_generic_toggle_selection_for_child (GD_MAIN_BOX_GENERIC (self), GD_MAIN_BOX_CHILD (child),
TRUE);
+ g_signal_emit_by_name (self, "selection-changed");
+ }
+ else if (priv->selection_changed)
+ {
+ /* This is for non-shift left-clicks and keyboard activation of
+ * unselected children.
+ */
+ g_signal_emit_by_name (self, "selection-changed");
+ }
+
+ g_signal_emit_by_name (self, "item-activated", GD_MAIN_BOX_CHILD (child));
+
+ if (priv->selection_changed)
+ {
+ gd_main_icon_box_update_last_selected_id (self, GD_MAIN_BOX_CHILD (child));
+ priv->selection_changed = FALSE;
+ }
+
+ out:
+ g_clear_pointer (&event, (GDestroyNotify) gdk_event_free);
+}
+
+static void
+gd_main_icon_box_drag_begin (GtkWidget *widget, GdkDragContext *context)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (widget);
+ GdMainIconBoxPrivate *priv;
+ GdMainBoxItem *item;
+ GtkFlowBoxChild *child;
+ cairo_surface_t *drag_icon = NULL;
+ cairo_surface_t *icon;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ if (priv->dnd_start_x < 0.0 || priv->dnd_start_y < 0.0)
+ goto out;
+
+ child = gtk_flow_box_get_child_at_pos (GTK_FLOW_BOX (self),
+ (gint) priv->dnd_start_x,
+ (gint) priv->dnd_start_y);
+ if (child == NULL)
+ goto out;
+
+ item = gd_main_box_child_get_item (GD_MAIN_BOX_CHILD (child));
+ icon = gd_main_box_item_get_icon (item);
+ if (icon == NULL)
+ goto out;
+
+ if (priv->selection_mode)
+ {
+ GList *selected_children;
+ guint length;
+
+ selected_children = gtk_flow_box_get_selected_children (GTK_FLOW_BOX (self));
+ length = g_list_length (selected_children);
+ if (length > 1)
+ drag_icon = gd_create_surface_with_counter (GTK_WIDGET (self), icon, length);
+
+ g_list_free (selected_children);
+ }
+
+ if (drag_icon == NULL)
+ drag_icon = gd_copy_image_surface (icon);
+
+ cairo_surface_set_device_offset (drag_icon, -MAIN_ICON_BOX_DND_ICON_OFFSET,
-MAIN_ICON_BOX_DND_ICON_OFFSET);
+ gtk_drag_set_icon_surface (context, drag_icon);
+
+ out:
+ g_clear_pointer (&drag_icon, (GDestroyNotify) cairo_surface_destroy);
+}
+
+static void
+gd_main_icon_box_add_child_uri_to_array (GdMainBoxChild *child, GPtrArray *uri_array)
+{
+ GdMainBoxItem *item;
+ const gchar *uri;
+
+ item = gd_main_box_child_get_item (child);
+ uri = gd_main_box_item_get_uri (item);
+ g_ptr_array_add (uri_array, g_strdup (uri));
+}
+
+static void
+gd_main_icon_box_drag_data_get (GtkWidget *widget,
+ GdkDragContext *context,
+ GtkSelectionData *data,
+ guint info,
+ guint time)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (widget);
+ GdMainIconBoxPrivate *priv;
+ GPtrArray *uri_array = NULL;
+ gchar **uris = NULL;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ if (info != 0)
+ goto out;
+
+ if (priv->dnd_start_x < 0.0 || priv->dnd_start_y < 0.0)
+ goto out;
+
+ uri_array = g_ptr_array_new_with_free_func (g_free);
+
+ if (priv->selection_mode)
+ {
+ GList *l;
+ GList *selected_children;
+
+ selected_children = gtk_flow_box_get_selected_children (GTK_FLOW_BOX (self));
+ for (l = selected_children; l != NULL; l = l->next)
+ {
+ GdMainBoxChild *child = GD_MAIN_BOX_CHILD (l->data);
+ gd_main_icon_box_add_child_uri_to_array (child, uri_array);
+ }
+
+ g_list_free (selected_children);
+ }
+ else
+ {
+ GtkFlowBoxChild *child;
+
+ child = gtk_flow_box_get_child_at_pos (GTK_FLOW_BOX (self),
+ (gint) priv->dnd_start_x,
+ (gint) priv->dnd_start_y);
+
+ if (child != NULL)
+ gd_main_icon_box_add_child_uri_to_array (GD_MAIN_BOX_CHILD (child), uri_array);
+ }
+
+ g_ptr_array_add (uri_array, NULL);
+ gtk_selection_data_set_uris (data, (gchar **) uri_array->pdata);
+
+ out:
+ g_clear_pointer (&uri_array, (GDestroyNotify) g_ptr_array_unref);
+}
+
+static gboolean
+gd_main_icon_box_focus (GtkWidget *widget, GtkDirectionType direction)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (widget);
+ GdMainIconBoxPrivate *priv;
+ GdkEvent *event = NULL;
+ GdkEvent *fake_event = NULL;
+ gboolean res;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ if (!priv->selection_mode)
+ {
+ res = GTK_WIDGET_CLASS (gd_main_icon_box_parent_class)->focus (widget, direction);
+ goto out;
+ }
+
+ event = gtk_get_current_event ();
+ if (event->type != GDK_KEY_PRESS && event->type != GDK_KEY_RELEASE)
+ {
+ res = GTK_WIDGET_CLASS (gd_main_icon_box_parent_class)->focus (widget, direction);
+ goto out;
+ }
+
+ if ((event->key.state & GDK_CONTROL_MASK) != 0)
+ {
+ res = GTK_WIDGET_CLASS (gd_main_icon_box_parent_class)->focus (widget, direction);
+ goto out;
+ }
+
+ fake_event = gdk_event_copy (event);
+ fake_event->key.state |= GDK_CONTROL_MASK;
+
+ gtk_main_do_event (fake_event);
+ res = GDK_EVENT_STOP;
+
+ out:
+ g_clear_pointer (&fake_event, (GDestroyNotify) gdk_event_free);
+ g_clear_pointer (&event, (GDestroyNotify) gdk_event_free);
+ return res;
+}
+
+static gboolean
+gd_main_icon_box_motion_notify_event (GtkWidget *widget, GdkEventMotion *event)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (widget);
+ GdMainIconBoxPrivate *priv;
+ GtkTargetList *targets;
+ gboolean res;
+ gint button;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ if (priv->dnd_button < 0)
+ goto out;
+
+ if (!gtk_drag_check_threshold (GTK_WIDGET (self),
+ (gint) priv->dnd_start_x,
+ (gint) priv->dnd_start_y,
+ (gint) event->x,
+ (gint) event->y))
+ goto out;
+
+ button = priv->dnd_button;
+ priv->dnd_button = -1;
+ priv->dnd_started = TRUE;
+
+ targets = gtk_drag_source_get_target_list (GTK_WIDGET (self));
+
+ gtk_drag_begin_with_coordinates (GTK_WIDGET (self),
+ targets,
+ GDK_ACTION_COPY,
+ button,
+ (GdkEvent *) event,
+ (gint) priv->dnd_start_x,
+ (gint) priv->dnd_start_y);
+
+ out:
+ res = GTK_WIDGET_CLASS (gd_main_icon_box_parent_class)->motion_notify_event (widget, event);
+ return res;
+}
+
+static gboolean
+gd_main_icon_box_move_cursor (GtkFlowBox *flow_box, GtkMovementStep step, gint count)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (flow_box);
+ GdMainIconBoxPrivate *priv;
+ GdkEvent *event = NULL;
+ GdkEvent *fake_event = NULL;
+ gboolean res;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ if (!priv->selection_mode)
+ {
+ res = GTK_FLOW_BOX_CLASS (gd_main_icon_box_parent_class)->move_cursor (flow_box, step, count);
+ goto out;
+ }
+
+ event = gtk_get_current_event ();
+ if (event->type != GDK_KEY_PRESS && event->type != GDK_KEY_RELEASE)
+ {
+ res = GTK_FLOW_BOX_CLASS (gd_main_icon_box_parent_class)->move_cursor (flow_box, step, count);
+ goto out;
+ }
+
+ if ((event->key.state & GDK_CONTROL_MASK) != 0 && (event->key.state & GDK_SHIFT_MASK) == 0)
+ {
+ res = GTK_FLOW_BOX_CLASS (gd_main_icon_box_parent_class)->move_cursor (flow_box, step, count);
+ goto out;
+ }
+
+ fake_event = gdk_event_copy (event);
+ fake_event->key.state |= GDK_CONTROL_MASK;
+ fake_event->key.state &= ~GDK_SHIFT_MASK;
+
+ gtk_main_do_event (fake_event);
+ res = GDK_EVENT_STOP;
+
+ out:
+ g_clear_pointer (&fake_event, (GDestroyNotify) gdk_event_free);
+ g_clear_pointer (&event, (GDestroyNotify) gdk_event_free);
+ return res;
+}
+
+static void
+gd_main_icon_box_select_all_flow_box (GtkFlowBox *flow_box)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (flow_box);
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ GTK_FLOW_BOX_CLASS (gd_main_icon_box_parent_class)->select_all (flow_box);
+
+ if (priv->selection_changed)
+ {
+ g_signal_emit_by_name (self, "selection-changed");
+ priv->selection_changed = FALSE;
+ }
+}
+
+static void
+gd_main_icon_box_selected_children_changed (GtkFlowBox *flow_box)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (flow_box);
+ GdMainIconBoxPrivate *priv;
+ gint i;
+ gint n_items;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ GTK_FLOW_BOX_CLASS (gd_main_icon_box_parent_class)->selected_children_changed (flow_box);
+
+ priv->selection_changed = TRUE;
+
+ /* When a range selection is attempted, we override GtkFlowBox's
+ * default behaviour by changing the selection ourselves. Therefore,
+ * there is no need to update the check buttons until the final
+ * selection is available.
+ */
+ if (!priv->key_shift_pressed && !priv->left_button_shift_released)
+ {
+ /* Work around https://bugzilla.gnome.org/show_bug.cgi?id=775525. */
+ n_items = (gint) g_list_model_get_n_items (G_LIST_MODEL (priv->model));
+ for (i = 0; i < n_items; i++)
+ {
+ GtkFlowBoxChild *child;
+ gboolean selected;
+
+ /* Work around the fact that GtkFlowBoxChild:selected is not
+ * a property.
+ */
+ child = gtk_flow_box_get_child_at_index (GTK_FLOW_BOX (self), i);
+ selected = gtk_flow_box_child_is_selected (child);
+ gd_main_box_child_set_selected (GD_MAIN_BOX_CHILD (child), selected);
+ }
+ }
+}
+
+static void
+gd_main_icon_box_unselect_all_flow_box (GtkFlowBox *flow_box)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (flow_box);
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ GTK_FLOW_BOX_CLASS (gd_main_icon_box_parent_class)->unselect_all (flow_box);
+
+ if (priv->selection_changed)
+ {
+ g_signal_emit_by_name (self, "selection-changed");
+ priv->selection_changed = FALSE;
+ }
+}
+
+static void
+gd_main_icon_box_dispose (GObject *obj)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (obj);
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ g_clear_object (&priv->model);
+
+ G_OBJECT_CLASS (gd_main_icon_box_parent_class)->dispose (obj);
+}
+
+static void
+gd_main_icon_box_finalize (GObject *obj)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (obj);
+ GdMainIconBoxPrivate *priv;
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ g_free (priv->last_selected_id);
+
+ G_OBJECT_CLASS (gd_main_icon_box_parent_class)->finalize (obj);
+}
+
+static void
+gd_main_icon_box_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (object);
+
+ switch (property_id)
+ {
+ case PROP_LAST_SELECTED_ID:
+ g_value_set_string (value, gd_main_icon_box_get_last_selected_id (GD_MAIN_BOX_GENERIC (self)));
+ break;
+ case PROP_MODEL:
+ g_value_set_object (value, gd_main_icon_box_get_model (GD_MAIN_BOX_GENERIC (self)));
+ break;
+ case PROP_SELECTION_MODE:
+ g_value_set_boolean (value, gd_main_icon_box_get_selection_mode (self));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gd_main_icon_box_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec)
+{
+ GdMainIconBox *self = GD_MAIN_ICON_BOX (object);
+
+ switch (property_id)
+ {
+ case PROP_MODEL:
+ gd_main_icon_box_set_model (self, g_value_get_object (value));
+ break;
+ case PROP_SELECTION_MODE:
+ gd_main_icon_box_set_selection_mode (self, g_value_get_boolean (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gd_main_icon_box_init (GdMainIconBox *self)
+{
+ GdMainIconBoxPrivate *priv;
+ const GtkTargetEntry targets[] = { { (gchar *) "text/uri-list", GTK_TARGET_OTHER_APP, 0 } };
+
+ priv = gd_main_icon_box_get_instance_private (self);
+
+ gtk_widget_set_can_focus (GTK_WIDGET (self), TRUE);
+ gtk_flow_box_set_homogeneous (GTK_FLOW_BOX (self), TRUE);
+ gtk_flow_box_set_min_children_per_line (GTK_FLOW_BOX (self), 3);
+ gtk_flow_box_set_selection_mode (GTK_FLOW_BOX (self), GTK_SELECTION_NONE);
+
+ /* We need to ensure that rubberband selection and DnD don't step
+ * on each others toes. We set start_button_mask to 0 to retain
+ * control over when to begin a drag.
+ */
+ gtk_drag_source_set (GTK_WIDGET (self), 0, targets, G_N_ELEMENTS (targets), GDK_ACTION_COPY);
+
+ priv->dnd_button = -1;
+ priv->dnd_start_x = -1.0;
+ priv->dnd_start_y = -1.0;
+}
+
+static void
+gd_main_icon_box_class_init (GdMainIconBoxClass *klass)
+{
+ GObjectClass *oclass = G_OBJECT_CLASS (klass);
+ GtkFlowBoxClass *fbclass = GTK_FLOW_BOX_CLASS (klass);
+ GtkWidgetClass *wclass = GTK_WIDGET_CLASS (klass);
+ GtkBindingSet *binding_set;
+ GdkModifierType activate_modifiers[] = { 0, /* Otherwise it will go to GtkFlowBoxChild::activate. */
+ GDK_SHIFT_MASK,
+ GDK_CONTROL_MASK,
+ GDK_SHIFT_MASK | GDK_CONTROL_MASK };
+ guint i;
+
+ binding_set = gtk_binding_set_by_class (klass);
+
+ oclass->dispose = gd_main_icon_box_dispose;
+ oclass->finalize = gd_main_icon_box_finalize;
+ oclass->get_property = gd_main_icon_box_get_property;
+ oclass->set_property = gd_main_icon_box_set_property;
+ wclass->button_press_event = gd_main_icon_box_button_press_event;
+ wclass->button_release_event = gd_main_icon_box_button_release_event;
+ wclass->drag_begin = gd_main_icon_box_drag_begin;
+ wclass->drag_data_get = gd_main_icon_box_drag_data_get;
+ wclass->focus = gd_main_icon_box_focus;
+ wclass->motion_notify_event = gd_main_icon_box_motion_notify_event;
+ fbclass->activate_cursor_child = gd_main_icon_box_activate_cursor_child;
+ fbclass->child_activated = gd_main_icon_box_child_activated;
+ fbclass->move_cursor = gd_main_icon_box_move_cursor;
+ fbclass->select_all = gd_main_icon_box_select_all_flow_box;
+ fbclass->selected_children_changed = gd_main_icon_box_selected_children_changed;
+ fbclass->unselect_all = gd_main_icon_box_unselect_all_flow_box;
+
+ g_object_class_override_property (oclass, PROP_LAST_SELECTED_ID, "last-selected-id");
+ g_object_class_override_property (oclass, PROP_MODEL, "model");
+ g_object_class_override_property (oclass, PROP_SELECTION_MODE, "gd-selection-mode");
+
+ for (i = 0; i < G_N_ELEMENTS (activate_modifiers); i++)
+ {
+ gtk_binding_entry_add_signal (binding_set,
+ GDK_KEY_space, activate_modifiers[i],
+ "activate-cursor-child",
+ 0);
+ gtk_binding_entry_add_signal (binding_set,
+ GDK_KEY_KP_Space, activate_modifiers[i],
+ "activate-cursor-child",
+ 0);
+ gtk_binding_entry_add_signal (binding_set,
+ GDK_KEY_Return, activate_modifiers[i],
+ "activate-cursor-child",
+ 0);
+ gtk_binding_entry_add_signal (binding_set,
+ GDK_KEY_ISO_Enter, activate_modifiers[i],
+ "activate-cursor-child",
+ 0);
+ gtk_binding_entry_add_signal (binding_set,
+ GDK_KEY_KP_Enter, activate_modifiers[i],
+ "activate-cursor-child",
+ 0);
+ }
+}
+
+static void
+gd_main_box_generic_interface_init (GdMainBoxGenericInterface *iface)
+{
+ iface->get_child_at_index = gd_main_icon_box_get_child_at_index;
+ iface->get_last_selected_id = gd_main_icon_box_get_last_selected_id;
+ iface->get_model = gd_main_icon_box_get_model;
+ iface->get_selected_children = gd_main_icon_box_get_selected_children;
+ iface->select_all = gd_main_icon_box_select_all_generic;
+ iface->select_child = gd_main_icon_box_select_child;
+ iface->unselect_all = gd_main_icon_box_unselect_all_generic;
+ iface->unselect_child = gd_main_icon_box_unselect_child;
+}
+
+GtkWidget *
+gd_main_icon_box_new (void)
+{
+ return g_object_new (GD_TYPE_MAIN_ICON_BOX, NULL);
+}
diff --git a/libgd/gd-main-icon-box.h b/libgd/gd-main-icon-box.h
new file mode 100644
index 0000000..5dc60fe
--- /dev/null
+++ b/libgd/gd-main-icon-box.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2016 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2 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 Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Author: Debarshi Ray <debarshir gnome org>
+ *
+ */
+
+#ifndef __GD_MAIN_ICON_BOX_H__
+#define __GD_MAIN_ICON_BOX_H__
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define GD_TYPE_MAIN_ICON_BOX gd_main_icon_box_get_type()
+G_DECLARE_DERIVABLE_TYPE (GdMainIconBox, gd_main_icon_box, GD, MAIN_ICON_BOX, GtkFlowBox)
+
+struct _GdMainIconBoxClass
+{
+ GtkFlowBoxClass parent_class;
+
+ /* signals */
+ gboolean (* move_cursor) (GdMainIconBox *self, GtkMovementStep step, gint count);
+};
+
+GtkWidget * gd_main_icon_box_new (void);
+
+G_END_DECLS
+
+#endif /* __GD_MAIN_ICON_BOX_H__ */
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