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gimp/app/widgets/gimpcombotagentry.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcombotagentry.c
* Copyright (C) 2008 Aurimas Juška <aurisj@svn.gnome.org>
*
* 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 <string.h>
#include <gtk/gtk.h>
#include "widgets-types.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimptag.h"
#include "core/gimptagged.h"
#include "core/gimptaggedcontainer.h"
#include "core/gimpviewable.h"
#include "gimptagentry.h"
#include "gimptagpopup.h"
#include "gimpcombotagentry.h"
static void gimp_combo_tag_entry_constructed (GObject *object);
static void gimp_combo_tag_entry_dispose (GObject *object);
static gboolean gimp_combo_tag_entry_expose (GtkWidget *widget,
GdkEventExpose *event);
static void gimp_combo_tag_entry_style_set (GtkWidget *widget,
GtkStyle *previous_style);
static void gimp_combo_tag_entry_icon_press (GtkWidget *widget,
GtkEntryIconPosition icon_pos,
GdkEvent *event,
gpointer user_data);
static void gimp_combo_tag_entry_popup_destroy (GtkObject *object,
GimpComboTagEntry *entry);
static void gimp_combo_tag_entry_tag_count_changed (GimpTaggedContainer *container,
gint tag_count,
GimpComboTagEntry *entry);
G_DEFINE_TYPE (GimpComboTagEntry, gimp_combo_tag_entry, GIMP_TYPE_TAG_ENTRY);
#define parent_class gimp_combo_tag_entry_parent_class
static void
gimp_combo_tag_entry_class_init (GimpComboTagEntryClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->constructed = gimp_combo_tag_entry_constructed;
object_class->dispose = gimp_combo_tag_entry_dispose;
widget_class->expose_event = gimp_combo_tag_entry_expose;
widget_class->style_set = gimp_combo_tag_entry_style_set;
}
static void
gimp_combo_tag_entry_init (GimpComboTagEntry *entry)
{
entry->popup = NULL;
entry->normal_item_attr = NULL;
entry->selected_item_attr = NULL;
entry->insensitive_item_attr = NULL;
gtk_widget_add_events (GTK_WIDGET (entry),
GDK_BUTTON_PRESS_MASK |
GDK_POINTER_MOTION_MASK);
gtk_entry_set_icon_from_stock (GTK_ENTRY (entry),
GTK_ENTRY_ICON_SECONDARY,
GTK_STOCK_GO_DOWN);
g_signal_connect (entry, "icon-press",
G_CALLBACK (gimp_combo_tag_entry_icon_press),
NULL);
}
static void
gimp_combo_tag_entry_constructed (GObject *object)
{
GimpComboTagEntry *entry = GIMP_COMBO_TAG_ENTRY (object);
if (G_OBJECT_CLASS (parent_class)->constructed)
G_OBJECT_CLASS (parent_class)->constructed (object);
g_signal_connect_object (GIMP_TAG_ENTRY (entry)->container,
"tag-count-changed",
G_CALLBACK (gimp_combo_tag_entry_tag_count_changed),
entry, 0);
}
static void
gimp_combo_tag_entry_dispose (GObject *object)
{
GimpComboTagEntry *combo_entry = GIMP_COMBO_TAG_ENTRY (object);
if (combo_entry->arrow_pixbuf)
{
g_object_unref (combo_entry->arrow_pixbuf);
combo_entry->arrow_pixbuf = NULL;
}
if (combo_entry->normal_item_attr)
{
pango_attr_list_unref (combo_entry->normal_item_attr);
combo_entry->normal_item_attr = NULL;
}
if (combo_entry->selected_item_attr)
{
pango_attr_list_unref (combo_entry->selected_item_attr);
combo_entry->selected_item_attr = NULL;
}
if (combo_entry->insensitive_item_attr)
{
pango_attr_list_unref (combo_entry->insensitive_item_attr);
combo_entry->insensitive_item_attr = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static gboolean
gimp_combo_tag_entry_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GimpComboTagEntry *entry = GIMP_COMBO_TAG_ENTRY (widget);
if (! entry->arrow_pixbuf)
{
GtkStyle *style = gtk_widget_get_style (widget);
GdkPixmap *pixmap;
cairo_t *cr;
pixmap = gdk_pixmap_new (gtk_widget_get_window (widget), 8, 8, -1);
cr = gdk_cairo_create (pixmap);
gdk_cairo_set_source_color (cr, &style->base[GTK_STATE_NORMAL]);
cairo_paint (cr);
cairo_destroy (cr);
gtk_paint_arrow (style, pixmap,
GTK_STATE_NORMAL,
GTK_SHADOW_NONE, NULL, widget, NULL,
GTK_ARROW_DOWN, TRUE,
0, 0, 8, 8);
entry->arrow_pixbuf = gdk_pixbuf_get_from_drawable (NULL, pixmap, NULL,
0, 0, 0, 0, 8, 8);
g_object_unref (pixmap);
gtk_entry_set_icon_from_pixbuf (GTK_ENTRY (entry),
GTK_ENTRY_ICON_SECONDARY,
entry->arrow_pixbuf);
}
return GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
}
static void
gimp_combo_tag_entry_style_set (GtkWidget *widget,
GtkStyle *previous_style)
{
GimpComboTagEntry *entry = GIMP_COMBO_TAG_ENTRY (widget);
GtkStyle *style = gtk_widget_get_style (widget);
GdkColor color;
PangoAttribute *attribute;
if (GTK_WIDGET_CLASS (parent_class)->style_set)
GTK_WIDGET_CLASS (parent_class)->style_set (widget, previous_style);
if (entry->normal_item_attr)
pango_attr_list_unref (entry->normal_item_attr);
entry->normal_item_attr = pango_attr_list_new ();
if (style->font_desc)
{
attribute = pango_attr_font_desc_new (style->font_desc);
pango_attr_list_insert (entry->normal_item_attr, attribute);
}
color = style->text[GTK_STATE_NORMAL];
attribute = pango_attr_foreground_new (color.red, color.green, color.blue);
pango_attr_list_insert (entry->normal_item_attr, attribute);
if (entry->selected_item_attr)
pango_attr_list_unref (entry->selected_item_attr);
entry->selected_item_attr = pango_attr_list_copy (entry->normal_item_attr);
color = style->text[GTK_STATE_SELECTED];
attribute = pango_attr_foreground_new (color.red, color.green, color.blue);
pango_attr_list_insert (entry->selected_item_attr, attribute);
color = style->base[GTK_STATE_SELECTED];
attribute = pango_attr_background_new (color.red, color.green, color.blue);
pango_attr_list_insert (entry->selected_item_attr, attribute);
if (entry->insensitive_item_attr)
pango_attr_list_unref (entry->insensitive_item_attr);
entry->insensitive_item_attr = pango_attr_list_copy (entry->normal_item_attr);
color = style->text[GTK_STATE_INSENSITIVE];
attribute = pango_attr_foreground_new (color.red, color.green, color.blue);
pango_attr_list_insert (entry->insensitive_item_attr, attribute);
color = style->base[GTK_STATE_INSENSITIVE];
attribute = pango_attr_background_new (color.red, color.green, color.blue);
pango_attr_list_insert (entry->insensitive_item_attr, attribute);
entry->selected_item_color = style->base[GTK_STATE_SELECTED];
if (entry->arrow_pixbuf)
{
g_object_unref (entry->arrow_pixbuf);
entry->arrow_pixbuf = NULL;
}
}
/**
* gimp_combo_tag_entry_new:
* @container: a tagged container to be used.
* @mode: tag entry mode to work in.
*
* Creates a new #GimpComboTagEntry widget which extends #GimpTagEntry by
* adding ability to pick tags using popup window (similar to combo box).
*
* Return value: a new #GimpComboTagEntry widget.
**/
GtkWidget *
gimp_combo_tag_entry_new (GimpTaggedContainer *container,
GimpTagEntryMode mode)
{
g_return_val_if_fail (GIMP_IS_TAGGED_CONTAINER (container), NULL);
return g_object_new (GIMP_TYPE_COMBO_TAG_ENTRY,
"container", container,
"mode", mode,
NULL);
}
static void
gimp_combo_tag_entry_icon_press (GtkWidget *widget,
GtkEntryIconPosition icon_pos,
GdkEvent *event,
gpointer user_data)
{
GimpComboTagEntry *entry = GIMP_COMBO_TAG_ENTRY (widget);
if (! entry->popup)
{
GimpTaggedContainer *container = GIMP_TAG_ENTRY (entry)->container;
gint tag_count;
tag_count = gimp_tagged_container_get_tag_count (container);
if (tag_count > 0 && ! GIMP_TAG_ENTRY (entry)->has_invalid_tags)
{
entry->popup = gimp_tag_popup_new (entry);
g_signal_connect (entry->popup, "destroy",
G_CALLBACK (gimp_combo_tag_entry_popup_destroy),
entry);
gimp_tag_popup_show (GIMP_TAG_POPUP (entry->popup));
}
}
else
{
gtk_widget_destroy (entry->popup);
}
}
static void
gimp_combo_tag_entry_popup_destroy (GtkObject *object,
GimpComboTagEntry *entry)
{
entry->popup = NULL;
gtk_widget_grab_focus (GTK_WIDGET (entry));
}
static void
gimp_combo_tag_entry_tag_count_changed (GimpTaggedContainer *container,
gint tag_count,
GimpComboTagEntry *entry)
{
gboolean sensitive;
sensitive = tag_count > 0 && ! GIMP_TAG_ENTRY (entry)->has_invalid_tags;
gtk_entry_set_icon_sensitive (GTK_ENTRY (entry),
GTK_ENTRY_ICON_SECONDARY,
sensitive);
}
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