/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-splash.c
*
* Copyright (C) 2000 Helix Code, Inc.
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Ettore Perazzoli
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gnome.h>
#include <gdk-pixbuf/gnome-canvas-pixbuf.h>
#include <gal/util/e-util.h>
#include "e-splash.h"
#define PARENT_TYPE gtk_window_get_type ()
static GtkWindowClass *parent_class = NULL;
struct _Icon {
GdkPixbuf *dark_pixbuf;
GdkPixbuf *light_pixbuf;
GnomeCanvasItem *canvas_item;
};
typedef struct _Icon Icon;
struct _ESplashPrivate {
GnomeCanvas *canvas;
GdkPixbuf *splash_image_pixbuf;
GList *icons; /* (Icon *) */
int num_icons;
int layout_idle_id;
};
/* Layout constants. These need to be changed if the splash changes. */
#define ICON_Y 280
#define ICON_SIZE 32
/* Icon management. */
static GdkPixbuf *
create_darkened_pixbuf (GdkPixbuf *pixbuf)
{
GdkPixbuf *new;
unsigned char *rowp;
int width, height;
int rowstride;
int i, j;
new = gdk_pixbuf_copy (pixbuf);
if (! gdk_pixbuf_get_has_alpha (new))
return new;
width = gdk_pixbuf_get_width (new);
height = gdk_pixbuf_get_height (new);
rowstride = gdk_pixbuf_get_rowstride (new);
rowp = gdk_pixbuf_get_pixels (new);
for (i = 0; i < height; i ++) {
unsigned char *p;
p = rowp;
for (j = 0; j < width; j++) {
p[3] *= .25;
p += 4;
}
rowp += rowstride;
}
return new;
}
static Icon *
icon_new (ESplash *splash,
GdkPixbuf *image_pixbuf)
{
ESplashPrivate *priv;
GnomeCanvasGroup *canvas_root_group;
Icon *icon;
priv = splash->priv;
icon = g_new (Icon, 1);
icon->light_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, ICON_SIZE, ICON_SIZE);
gdk_pixbuf_scale (image_pixbuf, icon->light_pixbuf,
0, 0,
ICON_SIZE, ICON_SIZE,
0, 0,
(double) ICON_SIZE / gdk_pixbuf_get_width (image_pixbuf),
(double) ICON_SIZE / gdk_pixbuf_get_height (image_pixbuf),
GDK_INTERP_HYPER);
icon->dark_pixbuf = create_darkened_pixbuf (icon->light_pixbuf);
/* Set up the canvas item to point to the dark pixbuf initially. */
canvas_root_group = GNOME_CANVAS_GROUP (GNOME_CANVAS (priv->canvas)->root);
icon->canvas_item = gnome_canvas_item_new (canvas_root_group,
GNOME_TYPE_CANVAS_PIXBUF,
"pixbuf", icon->dark_pixbuf,
NULL);
return icon;
}
static void
icon_free (Icon *icon)
{
gdk_pixbuf_unref (icon->dark_pixbuf);
gdk_pixbuf_unref (icon->light_pixbuf);
/* gtk_object_unref (GTK_OBJECT (icon->canvas_item)); */
g_free (icon);
}
/* Icon layout management. */
static void
layout_icons (ESplash *splash)
{
ESplashPrivate *priv;
GList *p;
double x_step;
double x, y;
priv = splash->priv;
x_step = ((double) gdk_pixbuf_get_width (priv->splash_image_pixbuf)) / priv->num_icons;
x = (x_step - ICON_SIZE) / 2.0;
y = ICON_Y;
for (p = priv->icons; p != NULL; p = p->next) {
Icon *icon;
icon = (Icon *) p->data;
gtk_object_set (GTK_OBJECT (icon->canvas_item),
"x", (double) x,
"y", (double) ICON_Y,
NULL);
x += x_step;
}
}
static int
layout_idle_cb (void *data)
{
ESplash *splash;
ESplashPrivate *priv;
splash = E_SPLASH (data);
priv = splash->priv;
layout_icons (splash);
priv->layout_idle_id = 0;
return FALSE;
}
static void
schedule_relayout (ESplash *splash)
{
ESplashPrivate *priv;
priv = splash->priv;
if (priv->layout_idle_id != 0)
return;
priv->layout_idle_id = gtk_idle_add (layout_idle_cb, splash);
}
/* GtkObject methods. */
static void
impl_destroy (GtkObject *object)
{
ESplash *splash;
ESplashPrivate *priv;
GList *p;
splash = E_SPLASH (object);
priv = splash->priv;
if (priv->splash_image_pixbuf != NULL)
gdk_pixbuf_unref (priv->splash_image_pixbuf);
for (p = priv->icons; p != NULL; p = p->next) {
Icon *icon;
icon = (Icon *) p->data;
icon_free (icon);
}
g_list_free (priv->icons);
if (priv->layout_idle_id != 0)
gtk_idle_remove (priv->layout_idle_id);
g_free (priv);
}
static void
class_init (ESplashClass *klass)
{
GtkObjectClass *object_class;
object_class = GTK_OBJECT_CLASS (klass);
object_class->destroy = impl_destroy;
parent_class = gtk_type_class (gtk_window_get_type ());
}
static void
init (ESplash *splash)
{
ESplashPrivate *priv;
priv = g_new (ESplashPrivate, 1);
priv->canvas = NULL;
priv->splash_image_pixbuf = NULL;
priv->icons = NULL;
priv->num_icons = 0;
priv->layout_idle_id = 0;
splash->priv = priv;
}
static gboolean
button_press_event (GtkWidget *widget, GdkEventButton *event, gpointer data)
{
ESplash *splash = (ESplash *) data;
gtk_widget_hide (GTK_WIDGET (splash));
return TRUE;
}
/**
* e_splash_construct:
* @splash: A pointer to an ESplash widget
* @splash_image_pixbuf: The pixbuf for the image to appear in the splash dialog
*
* Construct @splash with @splash_image_pixbuf as the splash image.
**/
void
e_splash_construct (ESplash *splash,
GdkPixbuf *splash_image_pixbuf)
{
ESplashPrivate *priv;
GtkWidget *canvas, *frame;
int image_width, image_height;
g_return_if_fail (splash != NULL);
g_return_if_fail (E_IS_SPLASH (splash));
g_return_if_fail (splash_image_pixbuf != NULL);
priv = splash->priv;
priv->splash_image_pixbuf = gdk_pixbuf_ref (splash_image_pixbuf);
canvas = gnome_canvas_new_aa ();
priv->canvas = GNOME_CANVAS (canvas);
image_width = gdk_pixbuf_get_width (splash_image_pixbuf);
image_height = gdk_pixbuf_get_height (splash_image_pixbuf);
gtk_widget_set_usize (canvas, image_width, image_height);
gnome_canvas_set_scroll_region (GNOME_CANVAS (canvas), 0, 0, image_width, image_height);
gtk_widget_show (canvas);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (frame), canvas);
gtk_widget_show (frame);
gtk_container_add (GTK_CONTAINER (splash), frame);
gnome_canvas_item_new (GNOME_CANVAS_GROUP (priv->canvas->root),
GNOME_TYPE_CANVAS_PIXBUF,
"pixbuf", splash_image_pixbuf,
NULL);
gtk_signal_connect (GTK_OBJECT (splash), "button-press-event",
GTK_SIGNAL_FUNC (button_press_event), splash);
gtk_object_set (GTK_OBJECT (splash), "type", GTK_WINDOW_TOPLEVEL, NULL);
gtk_window_set_position (GTK_WINDOW (splash), GTK_WIN_POS_CENTER);
gtk_window_set_policy (GTK_WINDOW (splash), FALSE, FALSE, FALSE);
gtk_window_set_default_size (GTK_WINDOW (splash), image_width, image_height);
}
/**
* e_splash_new:
*
* Create a new ESplash widget.
*
* Return value: A pointer to the newly created ESplash widget.
**/
GtkWidget *
e_splash_new (void)
{
ESplash *new;
GdkPixbuf *splash_image_pixbuf;
splash_image_pixbuf = gdk_pixbuf_new_from_file (EVOLUTION_IMAGES "/splash.png");
g_return_val_if_fail (splash_image_pixbuf != NULL, NULL);
new = gtk_type_new (e_splash_get_type ());
e_splash_construct (new, splash_image_pixbuf);
gdk_pixbuf_unref (splash_image_pixbuf);
return GTK_WIDGET (new);
}
/**
* e_splash_add_icon:
* @splash: A pointer to an ESplash widget
* @icon_pixbuf: Pixbuf for the icon to be added
*
* Add @icon_pixbuf to the @splash.
*
* Return value: The total number of icons in the splash after the new icon has
* been added.
**/
int
e_splash_add_icon (ESplash *splash,
GdkPixbuf *icon_pixbuf)
{
ESplashPrivate *priv;
Icon *icon;
g_return_val_if_fail (splash != NULL, 0);
g_return_val_if_fail (E_IS_SPLASH (splash), 0);
g_return_val_if_fail (icon_pixbuf != NULL, 0);
if (GTK_OBJECT_DESTROYED (splash))
return 0;
priv = splash->priv;
icon = icon_new (splash, icon_pixbuf);
priv->icons = g_list_append (priv->icons, icon);
priv->num_icons ++;
schedule_relayout (splash);
return priv->num_icons;
}
/**
* e_splash_set_icon_highlight:
* @splash: A pointer to an ESplash widget
* @num: Number of the icon whose highlight state must be changed
* @highlight: Whether the icon must be highlit or not
*
* Change the highlight state of the @num-th icon.
**/
void
e_splash_set_icon_highlight (ESplash *splash,
int num,
gboolean highlight)
{
ESplashPrivate *priv;
Icon *icon;
g_return_if_fail (splash != NULL);
g_return_if_fail (E_IS_SPLASH (splash));
if (GTK_OBJECT_DESTROYED (splash))
return;
priv = splash->priv;
icon = (Icon *) g_list_nth (priv->icons, num)->data;
gtk_object_set (GTK_OBJECT (icon->canvas_item),
"pixbuf", highlight ? icon->light_pixbuf : icon->dark_pixbuf,
NULL);
}
E_MAKE_TYPE (e_splash, "ESplash", ESplash, class_init, init, PARENT_TYPE)
