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/*
*
* arch-tag: Implementation of functions shared by the rating widget and cell renderer.
*
* Copyright (C) 2004 Christophe Fergeau <teuf@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 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 General Public License for more details.
*
* You should have received a copy of the GNU 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.
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "rb_rating_helper.h"
#define RB_STOCK_SET_STAR "star-set"
#define RB_STOCK_UNSET_STAR "star-unset"
#define RB_STOCK_NO_STAR "star-none"
struct _RBRatingPixbufs {
GdkPixbuf *pix_star;
GdkPixbuf *pix_dot;
GdkPixbuf *pix_blank;
};
void
rb_rating_pixbufs_free (RBRatingPixbufs *pixbufs)
{
if (pixbufs->pix_star != NULL)
g_object_unref (pixbufs->pix_star);
if (pixbufs->pix_dot != NULL)
g_object_unref (pixbufs->pix_dot);
if (pixbufs->pix_blank != NULL)
g_object_unref (pixbufs->pix_blank);
}
void
rb_rating_install_rating_property (GObjectClass *klass, gulong prop)
{
g_object_class_install_property (klass, prop,
g_param_spec_double ("rating",
("Rating Value"),
("Rating Value"),
0.0, (double)RB_RATING_MAX_SCORE,
(double)RB_RATING_MAX_SCORE/2.0,
G_PARAM_READWRITE));
}
RBRatingPixbufs *
rb_rating_pixbufs_new (void)
{
RBRatingPixbufs *pixbufs;
GtkIconTheme *theme;
gint width;
pixbufs = g_new0 (RBRatingPixbufs, 1);
theme = gtk_icon_theme_get_default ();
gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, NULL, &width);
pixbufs->pix_star = gtk_icon_theme_load_icon (theme,
RB_STOCK_SET_STAR,
width,
0,
NULL);
pixbufs->pix_dot = gtk_icon_theme_load_icon (theme,
RB_STOCK_UNSET_STAR,
width,
0,
NULL);
pixbufs->pix_blank = gtk_icon_theme_load_icon (theme,
RB_STOCK_NO_STAR,
width,
0,
NULL);
if (pixbufs->pix_star != NULL &&
pixbufs->pix_dot != NULL &&
pixbufs->pix_blank != NULL) {
return pixbufs;
}
else
{
rb_rating_pixbufs_free (pixbufs);
g_free (pixbufs);
g_warning ("Unable to load at least one of the following icons: " RB_STOCK_SET_STAR ", " RB_STOCK_UNSET_STAR " and " RB_STOCK_NO_STAR ". Displaying of the star rating will not work.\n");
return NULL;
}
}
gboolean
rb_rating_render_stars (GtkWidget *widget,
GdkWindow *window,
RBRatingPixbufs *pixbufs,
gulong x,
gulong y,
gulong x_offset,
gulong y_offset,
gdouble rating,
gboolean selected)
{
int i, icon_width;
gboolean rtl;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (window != NULL, FALSE);
g_return_val_if_fail (pixbufs != NULL, FALSE);
rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &icon_width, NULL);
for (i = 0; i < RB_RATING_MAX_SCORE; i++) {
GdkPixbuf *buf;
GtkStateType state;
gint star_offset;
int offset;
if (selected == TRUE) {
offset = 0;
if (GTK_WIDGET_HAS_FOCUS (widget))
state = GTK_STATE_SELECTED;
else
state = GTK_STATE_ACTIVE;
} else {
offset = 120;
if (GTK_WIDGET_STATE (widget) == GTK_STATE_INSENSITIVE)
state = GTK_STATE_INSENSITIVE;
else
state = GTK_STATE_NORMAL;
}
if (i < rating)
buf = pixbufs->pix_star;
else if (i >= rating && i < RB_RATING_MAX_SCORE)
buf = pixbufs->pix_dot;
else
buf = pixbufs->pix_blank;
if (buf == NULL) {
return FALSE;
}
/* buf = eel_create_colorized_pixbuf (buf,
(widget->style->text[state].red + offset) >> 8,
(widget->style->text[state].green + offset) >> 8,
(widget->style->text[state].blue + offset) >> 8); */
if (buf == NULL) {
return FALSE;
}
if (rtl) {
star_offset = (RB_RATING_MAX_SCORE - i - 1) * icon_width;
} else {
star_offset = i * icon_width;
}
gdk_draw_pixbuf (window,
NULL,
buf,
x, y,
x_offset + star_offset, y_offset,
icon_width, icon_width,
GDK_RGB_DITHER_NORMAL, 0, 0);
/* g_object_unref (G_OBJECT (buf)); */
}
return TRUE;
}
double
rb_rating_get_rating_from_widget (GtkWidget *widget,
gint widget_x,
gint widget_width,
double current_rating)
{
int icon_width;
double rating = -1.0;
gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &icon_width, NULL);
/* ensure the user clicks within the good cell */
if (widget_x >= 0 && widget_x <= widget_width) {
gboolean rtl;
rating = (int) (widget_x / icon_width) + 1;
rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
if (rtl) {
rating = RB_RATING_MAX_SCORE - rating + 1;
}
if (rating < 0)
rating = 0;
if (rating > RB_RATING_MAX_SCORE)
rating = RB_RATING_MAX_SCORE;
if (rating == current_rating) {
/* Make it possible to give a 0 rating to a song */
rating--;
}
}
return rating;
}
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