/*
* Copyright (c) 2011 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: Cosimo Cecchi <cosimoc@redhat.com>
*
*/
#include "gd-main-view.h"
#include "gd-main-view-generic.h"
#include "gd-main-icon-view.h"
#include "gd-main-list-view.h"
#define MAIN_VIEW_TYPE_INITIAL -1
#define MAIN_VIEW_DND_ICON_OFFSET 20
struct _GdMainViewPrivate {
GdMainViewType current_type;
gboolean selection_mode;
GtkWidget *current_view;
GtkTreeModel *model;
gchar *button_press_item_path;
};
enum {
PROP_VIEW_TYPE = 1,
PROP_SELECTION_MODE,
PROP_MODEL,
NUM_PROPERTIES
};
enum {
ITEM_ACTIVATED = 1,
ITEM_DELETED,
SELECTION_MODE_REQUEST,
VIEW_SELECTION_CHANGED,
NUM_SIGNALS
};
static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };
static guint signals[NUM_SIGNALS] = { 0, };
G_DEFINE_TYPE (GdMainView, gd_main_view, GTK_TYPE_SCROLLED_WINDOW)
static void
gd_main_view_dispose (GObject *obj)
{
GdMainView *self = GD_MAIN_VIEW (obj);
g_clear_object (&self->priv->model);
G_OBJECT_CLASS (gd_main_view_parent_class)->dispose (obj);
}
static void
gd_main_view_finalize (GObject *obj)
{
GdMainView *self = GD_MAIN_VIEW (obj);
g_free (self->priv->button_press_item_path);
G_OBJECT_CLASS (gd_main_view_parent_class)->finalize (obj);
}
static void
gd_main_view_init (GdMainView *self)
{
GtkStyleContext *context;
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GD_TYPE_MAIN_VIEW, GdMainViewPrivate);
/* so that we get constructed with the right view even at startup */
self->priv->current_type = MAIN_VIEW_TYPE_INITIAL;
gtk_widget_set_hexpand (GTK_WIDGET (self), TRUE);
gtk_widget_set_vexpand (GTK_WIDGET (self), TRUE);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (self), GTK_SHADOW_IN);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (self),
GTK_POLICY_NEVER,
GTK_POLICY_AUTOMATIC);
context = gtk_widget_get_style_context (GTK_WIDGET (self));
gtk_style_context_add_class (context, "documents-scrolledwin");
}
static void
gd_main_view_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GdMainView *self = GD_MAIN_VIEW (object);
switch (property_id)
{
case PROP_VIEW_TYPE:
g_value_set_int (value, gd_main_view_get_view_type (self));
break;
case PROP_SELECTION_MODE:
g_value_set_boolean (value, gd_main_view_get_selection_mode (self));
break;
case PROP_MODEL:
g_value_set_object (value, gd_main_view_get_model (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gd_main_view_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GdMainView *self = GD_MAIN_VIEW (object);
switch (property_id)
{
case PROP_VIEW_TYPE:
gd_main_view_set_view_type (self, g_value_get_int (value));
break;
case PROP_SELECTION_MODE:
gd_main_view_set_selection_mode (self, g_value_get_boolean (value));
break;
case PROP_MODEL:
gd_main_view_set_model (self, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gboolean
gd_main_view_real_item_deleted (GdMainView *self,
const gchar *path)
{
#if 0
/* Handling this breaks the logic of the models used. I think
we shouldn't handle this at all. */
GtkTreePath *tree_path = gtk_tree_path_new_from_string (path);
GtkTreeIter iter;
if (!gtk_tree_model_get_iter (self->priv->model, &iter, tree_path)) {
gtk_tree_path_free (tree_path);
return FALSE;
}
gtk_list_store_remove (GTK_LIST_STORE (self->priv->model), &iter);
gtk_tree_path_free (tree_path);
#endif
return TRUE;
}
static void
gd_main_view_class_init (GdMainViewClass *klass)
{
GObjectClass *oclass = G_OBJECT_CLASS (klass);
oclass->get_property = gd_main_view_get_property;
oclass->set_property = gd_main_view_set_property;
oclass->dispose = gd_main_view_dispose;
oclass->finalize = gd_main_view_finalize;
klass->item_deleted = gd_main_view_real_item_deleted;
properties[PROP_VIEW_TYPE] =
g_param_spec_int ("view-type",
"View type",
"View type",
GD_MAIN_VIEW_ICON,
GD_MAIN_VIEW_LIST,
GD_MAIN_VIEW_ICON,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS);
properties[PROP_SELECTION_MODE] =
g_param_spec_boolean ("selection-mode",
"Selection mode",
"Whether the view is in selection mode",
FALSE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS);
properties[PROP_MODEL] =
g_param_spec_object ("model",
"Model",
"The GtkTreeModel",
GTK_TYPE_TREE_MODEL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS);
signals[ITEM_ACTIVATED] =
g_signal_new ("item-activated",
GD_TYPE_MAIN_VIEW,
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE, 2,
G_TYPE_STRING,
GTK_TYPE_TREE_PATH);
signals[ITEM_DELETED] =
g_signal_new ("item-deleted",
GD_TYPE_MAIN_VIEW,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GdMainViewClass, item_deleted),
g_signal_accumulator_true_handled, NULL,
g_cclosure_marshal_generic,
G_TYPE_BOOLEAN, 1,
G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
signals[SELECTION_MODE_REQUEST] =
g_signal_new ("selection-mode-request",
GD_TYPE_MAIN_VIEW,
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE, 0);
signals[VIEW_SELECTION_CHANGED] =
g_signal_new ("view-selection-changed",
GD_TYPE_MAIN_VIEW,
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE, 0);
g_type_class_add_private (klass, sizeof (GdMainViewPrivate));
g_object_class_install_properties (oclass, NUM_PROPERTIES, properties);
}
static GdkPixbuf *
gd_main_view_get_counter_icon (GdMainView *self,
GdkPixbuf *base,
gint number)
{
GtkStyleContext *context;
cairo_t *cr, *emblem_cr;
cairo_surface_t *surface, *emblem_surface;
GdkPixbuf *retval;
gint width, height;
gint layout_width, layout_height;
gint emblem_size;
gdouble scale;
gchar *str;
PangoLayout *layout;
PangoAttrList *attr_list;
PangoAttribute *attr;
const PangoFontDescription *desc;
GdkRGBA color;
context = gtk_widget_get_style_context (GTK_WIDGET (self));
gtk_style_context_save (context);
gtk_style_context_add_class (context, "documents-counter");
width = gdk_pixbuf_get_width (base);
height = gdk_pixbuf_get_height (base);
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
width, height);
cr = cairo_create (surface);
gdk_cairo_set_source_pixbuf (cr, base, 0, 0);
cairo_paint (cr);
emblem_size = MIN (width / 2, height / 2);
emblem_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
emblem_size, emblem_size);
emblem_cr = cairo_create (emblem_surface);
gtk_render_background (context, emblem_cr,
0, 0, emblem_size, emblem_size);
if (number > 99)
number = 99;
if (number < -99)
number = -99;
str = g_strdup_printf ("%d", number);
layout = gtk_widget_create_pango_layout (GTK_WIDGET (self), str);
g_free (str);
pango_layout_get_pixel_size (layout, &layout_width, &layout_height);
/* scale the layout to be 0.5 of the size still available for drawing */
scale = (emblem_size * 0.50) / (MAX (layout_width, layout_height));
attr_list = pango_attr_list_new ();
attr = pango_attr_scale_new (scale);
pango_attr_list_insert (attr_list, attr);
pango_layout_set_attributes (layout, attr_list);
gtk_style_context_get (context, 0, "font", &desc, NULL);
pango_layout_set_font_description (layout, desc);
gtk_style_context_get_color (context, 0, &color);
gdk_cairo_set_source_rgba (emblem_cr, &color);
/* update these values */
pango_layout_get_pixel_size (layout, &layout_width, &layout_height);
cairo_move_to (emblem_cr,
emblem_size / 2 - layout_width / 2,
emblem_size / 2 - layout_height / 2);
pango_cairo_show_layout (emblem_cr, layout);
g_object_unref (layout);
pango_attr_list_unref (attr_list);
cairo_destroy (emblem_cr);
cairo_set_source_surface (cr, emblem_surface,
width - emblem_size, height - emblem_size);
cairo_paint (cr);
cairo_destroy (cr);
retval = gdk_pixbuf_get_from_surface (surface,
0, 0,
width, height);
cairo_surface_destroy (emblem_surface);
cairo_surface_destroy (surface);
gtk_style_context_restore (context);
return retval;
}
static GdMainViewGeneric *
get_generic (GdMainView *self)
{
if (self->priv->current_view != NULL)
return GD_MAIN_VIEW_GENERIC (self->priv->current_view);
return NULL;
}
static gboolean
on_button_release_selection_mode (GdMainView *self,
GdkEventButton *event,
gboolean entered_mode,
GtkTreePath *path)
{
gboolean selected;
GtkTreeIter iter;
if (!gtk_tree_model_get_iter (self->priv->model, &iter, path))
return FALSE;
gtk_tree_model_get (self->priv->model, &iter,
GD_MAIN_COLUMN_SELECTED, &selected,
-1);
if (selected && !entered_mode)
gtk_list_store_set (GTK_LIST_STORE (self->priv->model), &iter,
GD_MAIN_COLUMN_SELECTED, FALSE,
-1);
else if (!selected)
gtk_list_store_set (GTK_LIST_STORE (self->priv->model), &iter,
GD_MAIN_COLUMN_SELECTED, TRUE,
-1);
g_signal_emit (self, signals[VIEW_SELECTION_CHANGED], 0);
return FALSE;
}
static gboolean
on_button_release_view_mode (GdMainView *self,
GdkEventButton *event,
GtkTreePath *path)
{
GtkTreeIter iter;
gchar *id;
if (self->priv->model == NULL)
return FALSE;
if (!gtk_tree_model_get_iter (self->priv->model, &iter, path))
return FALSE;
gtk_tree_model_get (self->priv->model, &iter,
GD_MAIN_COLUMN_ID, &id,
-1);
g_signal_emit (self, signals[ITEM_ACTIVATED], 0, id, path);
g_free (id);
return FALSE;
}
static gboolean
on_button_release_event (GtkWidget *view,
GdkEventButton *event,
gpointer user_data)
{
GdMainView *self = user_data;
GdMainViewGeneric *generic = get_generic (self);
GtkTreePath *path;
gchar *button_release_item_path;
gboolean entered_mode = FALSE, selection_mode;
gboolean res, same_item = FALSE;
/* eat double/triple click events */
if (event->type != GDK_BUTTON_RELEASE)
return TRUE;
path = gd_main_view_generic_get_path_at_pos (generic, event->x, event->y);
if (path != NULL)
{
button_release_item_path = gtk_tree_path_to_string (path);
if (g_strcmp0 (self->priv->button_press_item_path, button_release_item_path) == 0)
same_item = TRUE;
g_free (button_release_item_path);
}
g_free (self->priv->button_press_item_path);
self->priv->button_press_item_path = NULL;
if (!same_item)
{
res = FALSE;
goto out;
}
selection_mode = self->priv->selection_mode;
if (!selection_mode)
{
if (event->button == 3)
{
g_signal_emit (self, signals[SELECTION_MODE_REQUEST], 0);
selection_mode = TRUE;
entered_mode = TRUE;
}
}
if (selection_mode)
res = on_button_release_selection_mode (self, event, entered_mode, path);
else
res = on_button_release_view_mode (self, event, path);
out:
gtk_tree_path_free (path);
return res;
}
static gboolean
on_button_press_event (GtkWidget *view,
GdkEventButton *event,
gpointer user_data)
{
GdMainView *self = user_data;
GdMainViewGeneric *generic = get_generic (self);
GtkTreePath *path;
GList *selection, *l;
GtkTreePath *sel_path;
gboolean found = FALSE;
path = gd_main_view_generic_get_path_at_pos (generic, event->x, event->y);
if (path != NULL)
self->priv->button_press_item_path = gtk_tree_path_to_string (path);
if (!self->priv->selection_mode ||
path == NULL)
{
gtk_tree_path_free (path);
return FALSE;
}
selection = gd_main_view_get_selection (self);
for (l = selection; l != NULL; l = l->next)
{
sel_path = l->data;
if (gtk_tree_path_compare (path, sel_path) == 0)
{
found = TRUE;
break;
}
}
if (selection != NULL)
g_list_free_full (selection, (GDestroyNotify) gtk_tree_path_free);
/* if we did not find the item in the selection, block
* drag and drop, while in selection mode
*/
return !found;
}
static void
on_drag_begin (GdMainViewGeneric *generic,
GdkDragContext *drag_context,
gpointer user_data)
{
GdMainView *self = user_data;
if (self->priv->button_press_item_path != NULL)
{
gboolean res;
GtkTreeIter iter;
GdkPixbuf *icon = NULL;
GtkTreePath *path;
path = gtk_tree_path_new_from_string (self->priv->button_press_item_path);
res = gtk_tree_model_get_iter (self->priv->model,
&iter, path);
if (res)
gtk_tree_model_get (self->priv->model, &iter,
GD_MAIN_COLUMN_ICON, &icon,
-1);
if (self->priv->selection_mode &&
icon != NULL)
{
GList *selection;
GdkPixbuf *counter;
selection = gd_main_view_get_selection (self);
if (g_list_length (selection) > 1)
{
counter = gd_main_view_get_counter_icon (self, icon, g_list_length (selection));
g_clear_object (&icon);
icon = counter;
}
if (selection != NULL)
g_list_free_full (selection, (GDestroyNotify) gtk_tree_path_free);
}
if (icon != NULL)
{
gtk_drag_set_icon_pixbuf (drag_context, icon,
MAIN_VIEW_DND_ICON_OFFSET, MAIN_VIEW_DND_ICON_OFFSET);
g_object_unref (icon);
}
gtk_tree_path_free (path);
}
}
static void
on_delete_item_clicked (GdMainViewGeneric *generic,
const gchar *path,
GdMainView *self)
{
g_free (self->priv->button_press_item_path);
self->priv->button_press_item_path = NULL;
gd_main_view_item_deleted (self, path);
}
static void
gd_main_view_apply_model (GdMainView *self)
{
GdMainViewGeneric *generic = get_generic (self);
gd_main_view_generic_set_model (generic, self->priv->model);
}
static gboolean
clear_selection_list_foreach (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer user_data)
{
gtk_list_store_set (GTK_LIST_STORE (model), iter,
GD_MAIN_COLUMN_SELECTED, FALSE,
-1);
return FALSE;
}
static void
gd_main_view_apply_selection_mode (GdMainView *self)
{
GdMainViewGeneric *generic = get_generic (self);
gd_main_view_generic_set_selection_mode (generic, self->priv->selection_mode);
if (!self->priv->selection_mode &&
self->priv->model != NULL)
{
gtk_tree_model_foreach (self->priv->model,
clear_selection_list_foreach,
self);
g_signal_emit (self, signals[VIEW_SELECTION_CHANGED], 0);
}
}
static void
gd_main_view_rebuild (GdMainView *self)
{
GtkStyleContext *context;
if (self->priv->current_view != NULL)
gtk_widget_destroy (self->priv->current_view);
if (self->priv->current_type == GD_MAIN_VIEW_ICON)
self->priv->current_view = gd_main_icon_view_new ();
else
self->priv->current_view = gd_main_list_view_new ();
context = gtk_widget_get_style_context (self->priv->current_view);
gtk_style_context_add_class (context, "documents-main-view");
gtk_container_add (GTK_CONTAINER (self), self->priv->current_view);
g_signal_connect (self->priv->current_view, "button-press-event",
G_CALLBACK (on_button_press_event), self);
g_signal_connect (self->priv->current_view, "button-release-event",
G_CALLBACK (on_button_release_event), self);
g_signal_connect_after (self->priv->current_view, "drag-begin",
G_CALLBACK (on_drag_begin), self);
g_signal_connect (self->priv->current_view, "delete-item-clicked",
G_CALLBACK (on_delete_item_clicked), self);
gd_main_view_apply_selection_mode (self);
gd_main_view_apply_model (self);
gtk_widget_show_all (GTK_WIDGET (self));
}
GdMainView *
gd_main_view_new (GdMainViewType type)
{
return g_object_new (GD_TYPE_MAIN_VIEW,
"view-type", type,
NULL);
}
void
gd_main_view_set_view_type (GdMainView *self,
GdMainViewType type)
{
if (type != self->priv->current_type)
{
self->priv->current_type = type;
gd_main_view_rebuild (self);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_VIEW_TYPE]);
}
}
GdMainViewType
gd_main_view_get_view_type (GdMainView *self)
{
return self->priv->current_type;
}
void
gd_main_view_set_selection_mode (GdMainView *self,
gboolean selection_mode)
{
if (selection_mode != self->priv->selection_mode)
{
self->priv->selection_mode = selection_mode;
gd_main_view_apply_selection_mode (self);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SELECTION_MODE]);
}
}
GdMainViewType
gd_main_view_get_selection_mode (GdMainView *self)
{
return self->priv->selection_mode;
}
/**
* gd_main_view_set_model:
* @self:
* @model: (allow-none):
*
*/
void
gd_main_view_set_model (GdMainView *self,
GtkTreeModel *model)
{
if (model != self->priv->model)
{
g_clear_object (&self->priv->model);
if (model)
self->priv->model = g_object_ref (model);
else
self->priv->model = NULL;
gd_main_view_apply_model (self);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_MODEL]);
}
}
/**
* gd_main_view_get_model:
* @self:
*
* Returns: (transfer none):
*/
GtkTreeModel *
gd_main_view_get_model (GdMainView *self)
{
return self->priv->model;
}
/**
* gd_main_view_get_generic_view:
* @self:
*
* Returns: (transfer none):
*/
GtkWidget *
gd_main_view_get_generic_view (GdMainView *self)
{
return self->priv->current_view;
}
static gboolean
build_selection_list_foreach (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer user_data)
{
GList **sel = user_data;
gboolean is_selected;
gtk_tree_model_get (model, iter,
GD_MAIN_COLUMN_SELECTED, &is_selected,
-1);
if (is_selected)
*sel = g_list_prepend (*sel, gtk_tree_path_copy (path));
return FALSE;
}
/**
* gd_main_view_get_selection:
* @self:
*
* Returns: (element-type GtkTreePath) (transfer full):
*/
GList *
gd_main_view_get_selection (GdMainView *self)
{
GList *retval = NULL;
gtk_tree_model_foreach (self->priv->model,
build_selection_list_foreach,
&retval);
return g_list_reverse (retval);
}
void
gd_main_view_item_deleted (GdMainView *self,
const gchar *path)
{
gboolean result;
g_signal_emit (self, signals [ITEM_DELETED], 0, path, &result);
}
