Desktop
/* $Id: gtk-demo.c,v 1.12 2012/08/03 23:13:48 khorben Exp $ */
/* Copyright (c) 2011-2012 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Locker */
/* 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, version 3 of the License.
*
* 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/>. */
/* TODO:
* - re-factor and re-indent adequately
* - improve performance */
#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <gdk/gdkx.h>
#include <System.h>
#include "Locker/demo.h"
#include "../../config.h"
#ifndef PREFIX
# define PREFIX "/usr/local"
#endif
#ifndef DATADIR
# define DATADIR PREFIX "/share"
#endif
#ifndef DEMODIR
# define DEMODIR DATADIR "/gtk-2.0/demo"
#endif
/* Gtk-demo */
/* private */
/* types */
typedef enum _GtkDemoImage
{
GDI_BACKGROUND = 0,
GDI_APPLE_RED,
GDI_GNOME_APPLETS,
GDI_GNOME_CALENDAR,
GDI_GNOME_FOOT,
GDI_GNOME_GMUSH,
GDI_GNOME_GIMP,
GDI_GNOME_GSAME,
GDI_GNU_KEYS
} GtkDemoImage;
#define GDI_LAST GDI_GNU_KEYS
#define GDI_COUNT (GDI_LAST + 1)
typedef struct _LockerDemo
{
LockerDemoHelper * helper;
GdkPixbuf * images[GDI_COUNT];
GtkWidget ** windows;
size_t windows_cnt;
guint timeout;
guint frame_num;
} GtkDemo;
/* constants */
static const char * _gtkdemo_images[GDI_COUNT] =
{
DEMODIR "/background.jpg",
DEMODIR "/apple-red.png",
DEMODIR "/gnome-applets.png",
DEMODIR "/gnome-calendar.png",
DEMODIR "/gnome-foot.png",
DEMODIR "/gnome-gmush.png",
DEMODIR "/gnome-gimp.png",
DEMODIR "/gnome-gsame.png",
DEMODIR "/gnu-keys.png"
};
/* prototypes */
/* plug-in */
static GtkDemo * _gtkdemo_init(LockerDemoHelper * helper);
static void _gtkdemo_destroy(GtkDemo * gtkdemo);
static int _gtkdemo_add(GtkDemo * gtkdemo, GtkWidget * window);
static void _gtkdemo_remove(GtkDemo * gtkdemo, GtkWidget * window);
static void _gtkdemo_start(GtkDemo * gtkdemo);
static void _gtkdemo_stop(GtkDemo * gtkdemo);
/* callbacks */
static gboolean _gtkdemo_on_timeout(gpointer data);
/* public */
/* variables */
/* plug-in */
LockerDemoDefinition plugin =
{
"Gtk-demo",
NULL,
NULL,
_gtkdemo_init,
_gtkdemo_destroy,
_gtkdemo_add,
_gtkdemo_remove,
_gtkdemo_start,
_gtkdemo_stop
};
/* private */
/* functions */
/* plug-in */
/* gtkdemo_init */
static GtkDemo * _gtkdemo_init(LockerDemoHelper * helper)
{
GtkDemo * gtkdemo;
size_t i;
GError * error = NULL;
if((gtkdemo = object_new(sizeof(*gtkdemo))) == NULL)
return NULL;
gtkdemo->helper = helper;
for(i = 0; i < GDI_COUNT; i++)
if((gtkdemo->images[i] = gdk_pixbuf_new_from_file(
_gtkdemo_images[i], &error))
== NULL)
{
helper->error(NULL, error->message, 1);
g_error_free(error);
error = NULL;
}
gtkdemo->windows = NULL;
gtkdemo->windows_cnt = 0;
gtkdemo->timeout = 0;
gtkdemo->frame_num = 0;
return gtkdemo;
}
/* gtkdemo_destroy */
static void _gtkdemo_destroy(GtkDemo * gtkdemo)
{
size_t i;
if(gtkdemo->timeout != 0)
g_source_remove(gtkdemo->timeout);
for(i = 0; i < GDI_COUNT; i++)
if(gtkdemo->images[i] != NULL)
g_object_unref(gtkdemo->images[i]);
object_delete(gtkdemo);
}
/* gtkdemo_add */
static int _gtkdemo_add(GtkDemo * gtkdemo, GtkWidget * window)
{
int ret = 0;
GdkWindow * w;
GtkWidget ** p;
GdkColor color = { 0xff000000, 0xffff, 0x0, 0x0 };
GdkPixmap * pixmap;
GdkPixbuf * background = gtkdemo->images[GDI_BACKGROUND];
GdkRectangle rect;
int depth;
int width;
int height;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() window=%p\n", __func__, (void *)window);
#endif
if((p = realloc(gtkdemo->windows, sizeof(*p) * (gtkdemo->windows_cnt
+ 1))) == NULL)
return -1;
gtkdemo->windows = p;
w = gtk_widget_get_window(window);
gdk_window_get_geometry(w, &rect.x, &rect.y, &rect.width, &rect.height,
&depth);
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() (%dx%d), (%dx%d)@%dbpp\n", __func__,
rect.x, rect.y, rect.width, rect.height, depth);
#endif
/* set the default color */
gdk_window_set_background(w, &color);
/* draw background */
width = (background != NULL) ? gdk_pixbuf_get_width(background) : 0;
height = (background != NULL) ? gdk_pixbuf_get_height(background) : 0;
if(width > 0 && height > 0)
{
pixmap = gdk_pixmap_new(w, width, height, -1);
gdk_draw_pixbuf(pixmap, NULL, background, 0, 0, 0, 0, width,
height, GDK_RGB_DITHER_NONE, 0, 0);
gdk_window_set_back_pixmap(w, pixmap, FALSE);
gdk_pixmap_unref(pixmap);
}
gdk_window_clear(w);
gtkdemo->windows[gtkdemo->windows_cnt++] = window;
return ret;
}
/* gtkdemo_remove */
static void _gtkdemo_remove(GtkDemo * gtkdemo, GtkWidget * window)
{
size_t i;
for(i = 0; i < gtkdemo->windows_cnt; i++)
if(gtkdemo->windows[i] == window)
gtkdemo->windows[i] = NULL;
/* FIXME reorganize the array and free memory */
for(i = 0; i < gtkdemo->windows_cnt; i++)
if(gtkdemo->windows[i] != NULL)
break;
if(i == gtkdemo->windows_cnt)
{
/* there are no windows left */
_gtkdemo_stop(gtkdemo);
free(gtkdemo->windows);
gtkdemo->windows = NULL;
gtkdemo->windows_cnt = 0;
}
}
/* gtkdemo_start */
static void _gtkdemo_start(GtkDemo * gtkdemo)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if(gtkdemo->timeout == 0 && _gtkdemo_on_timeout(gtkdemo) == TRUE)
gtkdemo->timeout = g_timeout_add(40, _gtkdemo_on_timeout,
gtkdemo);
}
/* gtkdemo_stop */
static void _gtkdemo_stop(GtkDemo * gtkdemo)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if(gtkdemo->timeout != 0)
g_source_remove(gtkdemo->timeout);
gtkdemo->timeout = 0;
}
/* callbacks */
/* gtkdemo_on_timeout */
static gboolean _gtkdemo_on_timeout(gpointer data)
{
GtkDemo * gtkdemo = data;
size_t c;
GdkWindow * window;
GdkPixbuf * background = gtkdemo->images[GDI_BACKGROUND];
gint back_width;
gint back_height;
GdkPixbuf * frame;
GdkRectangle rect;
int depth;
GdkPixmap * pixmap;
int j;
#define CYCLE_LEN 60
double f;
int i;
double xmid, ymid;
double radius;
for(c = 0; c < gtkdemo->windows_cnt; c++)
{
if(gtkdemo->windows[c] == NULL)
break;
#if GTK_CHECK_VERSION(2, 14, 0)
window = gtk_widget_get_window(gtkdemo->windows[c]);
#else
window = gtkdemo->windows[c]->window;
#endif
gdk_window_get_geometry(window, &rect.x,
&rect.y, &rect.width, &rect.height, &depth);
frame = gdk_pixbuf_new(GDK_COLORSPACE_RGB, 1, 8,
rect.width, rect.height);
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() frame=%p\n", __func__,
(void *)frame);
#endif
back_width = (background != NULL)
? gdk_pixbuf_get_width(background) : 0;
back_height = (background != NULL)
? gdk_pixbuf_get_height(background) : 0;
for(j = 0; back_height > 0 && j < rect.height;
j += back_height)
for(i = 0; back_width > 0 && i < rect.width;
i += back_width)
gdk_pixbuf_copy_area(background, 0, 0,
MIN(back_width, rect.width - i),
MIN(back_height,
rect.height - j),
frame, i, j);
f = (double) (gtkdemo->frame_num % CYCLE_LEN) / CYCLE_LEN;
back_width = rect.width;
back_height = rect.height;
xmid = back_width / 2.0;
ymid = back_height / 2.0;
radius = MIN(xmid, ymid) / 2.0;
for(i = 1; i < GDI_COUNT; i++)
{
double ang;
int xpos, ypos;
int iw, ih;
double r;
GdkRectangle r1, r2, dest;
double k;
if(gtkdemo->images[i] == NULL)
continue;
ang = 2.0 * G_PI * (double) (i - 1) / (GDI_COUNT - 1)
- f * 2.0 * G_PI;
iw = gdk_pixbuf_get_width(gtkdemo->images[i]);
ih = gdk_pixbuf_get_height(gtkdemo->images[i]);
r = radius + (radius / 3.0) * sin (f * 2.0 * G_PI);
xpos = floor (xmid + r * cos (ang) - iw / 2.0 + 0.5);
ypos = floor (ymid + r * sin (ang) - ih / 2.0 + 0.5);
k = (i & 1) ? sin (f * 2.0 * G_PI)
: cos (f * 2.0 * G_PI);
k = 2.0 * k * k;
k = MAX (0.25, k);
r1.x = xpos;
r1.y = ypos;
r1.width = iw * k;
r1.height = ih * k;
r2.x = 0;
r2.y = 0;
r2.width = back_width;
r2.height = back_height;
if(gdk_rectangle_intersect(&r1, &r2, &dest))
gdk_pixbuf_composite(gtkdemo->images[i], frame,
dest.x, dest.y, dest.width,
dest.height, xpos, ypos, k, k,
GDK_INTERP_NEAREST, ((i & 1)
? MAX (127, fabs (255 * sin (f * 2.0 * G_PI)))
: MAX (127, fabs (255 * cos (f * 2.0 * G_PI)))));
}
pixmap = gdk_pixmap_new(window, rect.width, rect.width, -1);
gdk_draw_pixbuf(pixmap, NULL, frame, 0, 0, 0, 0, rect.width,
rect.height, GDK_RGB_DITHER_NONE, 0, 0);
gdk_window_set_back_pixmap(window, pixmap, FALSE);
gdk_window_clear(window);
gdk_pixmap_unref(pixmap);
g_object_unref(frame);
}
gtkdemo->frame_num++;
return TRUE;
}