Locker
/* $Id$ */
/* Copyright (c) 2012-2018 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Locker */
/* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY ITS AUTHORS AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#include <unistd.h>
#include <stdlib.h>
#ifdef DEBUG
# include <stdio.h>
#endif
#include <string.h>
#include <time.h>
#include <System.h>
#include "Locker/demo.h"
#include "../../config.h"
/* constants */
#ifndef PREFIX
# define PREFIX "/usr/local"
#endif
#ifndef DATADIR
# define DATADIR PREFIX "/share"
#endif
/* macros */
#ifndef MIN
# define MIN(a, b) ((a) < (b) ? (a) : (b))
#endif
/* Logo */
/* private */
/* types */
typedef struct _LogoTheme
{
char const * name;
char const * background;
char const * logo;
} LogoTheme;
typedef struct _LogoWindow
{
GdkWindow * window;
GdkPixbuf * frame;
#if GTK_CHECK_VERSION(3, 0, 0)
cairo_t * cairo;
#else
GdkPixmap * pixmap;
#endif
} LogoWindow;
typedef struct _LockerDemo
{
LockerDemoHelper * helper;
GdkPixbuf * background;
GdkPixbuf * logo;
LogoWindow * windows;
size_t windows_cnt;
guint source;
guint frame_num;
/* settings */
int scroll;
int opacity;
} Logo;
/* constants */
static const LogoTheme _logo_themes[] =
{
{ "gnome", DATADIR "/pixmaps/backgrounds/gnome/background-default.jpg",
DATADIR "/icons/gnome/256x256/places/start-here.png" },
{ NULL, NULL, NULL }
};
#define LOGO_THEME_DEFAULT 0
/* prototypes */
/* plug-in */
static Logo * _logo_init(LockerDemoHelper * helper);
static void _logo_destroy(Logo * logo);
static void _logo_reload(Logo * logo);
static int _logo_add(Logo * logo, GdkWindow * window);
static void _logo_remove(Logo * logo, GdkWindow * window);
static void _logo_start(Logo * logo);
static void _logo_stop(Logo * logo);
static void _logo_cycle(Logo * logo);
/* useful */
static int _logo_load(Logo * logo);
/* callbacks */
static gboolean _logo_on_timeout(gpointer data);
/* public */
/* variables */
/* plug-in */
LockerDemoDefinition plugin =
{
"Logo",
"start-here",
NULL,
_logo_init,
_logo_destroy,
_logo_reload,
_logo_add,
_logo_remove,
_logo_start,
_logo_stop,
_logo_cycle
};
/* private */
/* functions */
/* plug-in */
/* logo_init */
static Logo * _logo_init(LockerDemoHelper * helper)
{
Logo * logo;
if((logo = object_new(sizeof(*logo))) == NULL)
return NULL;
/* initialization */
logo->helper = helper;
logo->background = NULL;
logo->logo = NULL;
logo->windows = NULL;
logo->windows_cnt = 0;
logo->source = 0;
logo->frame_num = 0;
logo->scroll = 0;
logo->opacity = 255;
logo->background = NULL;
logo->logo = NULL;
_logo_load(logo);
return logo;
}
/* logo_destroy */
static void _logo_destroy(Logo * logo)
{
#if GTK_CHECK_VERSION(3, 0, 0)
size_t i;
for(i = logo->windows_cnt; i > 0; i--)
if(logo->windows[i - 1].window != NULL)
_logo_remove(logo, logo->windows[i - 1].window);
#endif
free(logo->windows);
object_delete(logo);
}
/* logo_reload */
static void _logo_reload(Logo * logo)
{
LockerDemoHelper * helper = logo->helper;
char const * p;
int opacity;
/* FIXME implement the rest */
/* scrolling */
if((p = helper->config_get(helper->locker, "logo", "scroll")) != NULL)
logo->scroll = strtol(p, NULL, 10);
/* opacity */
if((p = helper->config_get(helper->locker, "logo", "opacity")) != NULL)
{
opacity = strtol(p, NULL, 10);
if(opacity >= 0 && opacity <= 255)
logo->opacity = opacity;
}
if(logo->source != 0)
{
g_source_remove(logo->source);
logo->source = 0;
}
logo->source = g_idle_add(_logo_on_timeout, logo);
}
/* logo_add */
static int _logo_add(Logo * logo, GdkWindow * window)
{
LogoWindow * p;
#if GTK_CHECK_VERSION(3, 0, 0)
GdkRGBA color = { 0.0, 0.0, 0.0, 0.0 };
#else
GdkColor color = { 0x0, 0x0, 0x0, 0x0 };
#endif
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() window=%p\n", __func__, (void *)window);
#endif
if((p = realloc(logo->windows, sizeof(*p) * (logo->windows_cnt + 1)))
== NULL)
return -1;
logo->windows = p;
p = &logo->windows[logo->windows_cnt++];
/* set the default color */
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_window_set_background_rgba(window, &color);
#else
gdk_window_set_background(window, &color);
gdk_window_clear(window);
#endif
p->window = window;
p->frame = NULL;
#if GTK_CHECK_VERSION(3, 0, 0)
p->cairo = gdk_cairo_create(window);
#else
p->pixmap = NULL;
#endif
return 0;
}
/* logo_remove */
static void _logo_remove(Logo * logo, GdkWindow * window)
{
size_t i;
for(i = 0; i < logo->windows_cnt; i++)
if(logo->windows[i].window == window)
{
logo->windows[i].window = NULL;
if(logo->windows[i].frame != NULL)
g_object_unref(logo->windows[i].frame);
logo->windows[i].frame = NULL;
#if GTK_CHECK_VERSION(3, 0, 0)
if(logo->windows[i].cairo != NULL)
cairo_destroy(logo->windows[i].cairo);
logo->windows[i].cairo = NULL;
#else
if(logo->windows[i].pixmap != NULL)
gdk_pixmap_unref(logo->windows[i].pixmap);
logo->windows[i].pixmap = NULL;
#endif
}
/* FIXME reorganize the array and free memory */
for(i = 0; i < logo->windows_cnt; i++)
if(logo->windows[i].window != NULL)
break;
if(i == logo->windows_cnt)
{
/* there are no windows left */
_logo_stop(logo);
free(logo->windows);
logo->windows = NULL;
logo->windows_cnt = 0;
}
}
/* logo_start */
static void _logo_start(Logo * logo)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if(logo->source == 0)
logo->source = g_idle_add(_logo_on_timeout, logo);
}
/* logo_stop */
static void _logo_stop(Logo * logo)
{
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if(logo->source != 0)
g_source_remove(logo->source);
logo->source = 0;
}
/* logo_cycle */
static void _logo_cycle(Logo * logo)
{
/* cycle only when not scrolling */
if(logo->scroll != 0)
return;
if(logo->source != 0)
g_source_remove(logo->source);
logo->source = g_idle_add(_logo_on_timeout, logo);
}
/* useful */
/* logo_load */
static int _logo_load(Logo * logo)
{
int ret = 0;
LockerDemoHelper * helper = logo->helper;
size_t i = LOGO_THEME_DEFAULT;
String const * p;
GdkPixbuf * pixbuf;
GError * error = NULL;
/* load the theme configured */
if((p = helper->config_get(helper->locker, "logo", "theme")) != NULL)
for(i = 0; _logo_themes[i].name != NULL; i++)
if(strcmp(_logo_themes[i].name, p) == 0)
break;
/* load the background */
if((p = _logo_themes[i].background) == NULL
&& (p = helper->config_get(helper->locker, "logo",
"background")) == NULL)
p = _logo_themes[LOGO_THEME_DEFAULT].background;
if((pixbuf = gdk_pixbuf_new_from_file(p, &error)) == NULL)
{
ret = -helper->error(NULL, error->message, 1);
g_error_free(error);
error = NULL;
}
else
{
if(logo->background != NULL)
g_object_unref(logo->background);
logo->background = pixbuf;
}
/* load the logo */
if((p = _logo_themes[i].logo) == NULL
&& (p = helper->config_get(helper->locker, "logo",
"logo")) == NULL)
p = _logo_themes[LOGO_THEME_DEFAULT].logo;
if((pixbuf = gdk_pixbuf_new_from_file(p, &error)) == NULL)
{
ret = -helper->error(NULL, error->message, 1);
g_error_free(error);
error = NULL;
}
else
{
if(logo->logo != NULL)
g_object_unref(logo->logo);
logo->logo = pixbuf;
}
logo->scroll = 0;
logo->opacity = 255;
_logo_reload(logo);
return ret;
}
/* callbacks */
/* logo_on_timeout */
static void _timeout_window(Logo * logo, LogoWindow * window);
static gboolean _logo_on_timeout(gpointer data)
{
Logo * logo = data;
size_t i;
for(i = 0; i < logo->windows_cnt; i++)
_timeout_window(logo, &logo->windows[i]);
logo->frame_num += logo->scroll;
logo->source = g_timeout_add((logo->scroll != 0) ? 40 : 10000,
_logo_on_timeout, logo);
return FALSE;
}
static void _timeout_window(Logo * logo, LogoWindow * window)
{
GdkWindow * w;
GdkRectangle rect;
#if !GTK_CHECK_VERSION(3, 0, 0)
int depth;
#endif
GdkPixbuf * frame;
int width = 0;
int height = 0;
int i;
int j;
int x = 0;
int y = 0;
int offset_x = 0;
int offset_y = 0;
int src_x;
int src_y;
int src_w;
int src_h;
int seed = time(NULL) ^ getpid() ^ getppid() ^ getuid() ^ getgid();
const int black = 0x000000ff;
if((w = window->window) == NULL)
return;
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_window_get_geometry(w, &rect.x, &rect.y, &rect.width, &rect.height);
#else
gdk_window_get_geometry(w, &rect.x, &rect.y, &rect.width, &rect.height,
&depth);
#endif
/* reallocate the frame and background if necessary */
if(window->frame == NULL
|| gdk_pixbuf_get_width(window->frame) != rect.width
|| gdk_pixbuf_get_height(window->frame) != rect.height)
{
if(window->frame != NULL)
g_object_unref(window->frame);
window->frame = gdk_pixbuf_new(GDK_COLORSPACE_RGB, 1, 8,
rect.width, rect.height);
#if !GTK_CHECK_VERSION(3, 0, 0)
if(window->pixmap != NULL)
gdk_pixmap_unref(window->pixmap);
window->pixmap = gdk_pixmap_new(w, rect.width, rect.width, -1);
#endif
}
frame = window->frame;
gdk_pixbuf_fill(frame, black);
/* draw the background */
if(logo->background != NULL)
{
width = gdk_pixbuf_get_width(logo->background);
height = gdk_pixbuf_get_height(logo->background);
if((logo->scroll != 0) && width > 0 && height > 0)
{
offset_x = logo->frame_num % width;
offset_y = logo->frame_num % height;
}
}
src_y = offset_y;
for(j = 0; height > 0 && j < rect.height; j += src_h)
{
src_h = MIN(height - src_y, rect.height - j);
src_x = offset_x;
for(i = 0; width > 0 && i < rect.width; i += src_w)
{
src_w = MIN(width - src_x, rect.width - i);
gdk_pixbuf_copy_area(logo->background, src_x, src_y,
src_w, src_h, frame, i, j);
src_x = 0;
}
src_y = 0;
}
/* draw the logo */
if(logo->logo != NULL)
{
width = gdk_pixbuf_get_width(logo->logo);
width = MIN(rect.width, width);
height = gdk_pixbuf_get_height(logo->logo);
height = MIN(rect.height, height);
if(logo->scroll == 0)
{
if(rect.width > width)
x = (rand() ^ seed) % (rect.width - width);
if(rect.height > height)
y = (rand() ^ seed) % (rect.height - height);
}
else
{
if(rect.width > width)
x = (rect.width - width) / 2;
if(rect.height > height)
y = (rect.height - height) / 2;
}
gdk_pixbuf_composite(logo->logo, frame, 0, 0,
rect.width, rect.height, x, y,
1.0, 1.0, GDK_INTERP_NEAREST, logo->opacity);
}
#if GTK_CHECK_VERSION(3, 0, 0)
gdk_cairo_set_source_pixbuf(window->cairo, frame, 0, 0);
cairo_paint(window->cairo);
#else
gdk_draw_pixbuf(window->pixmap, NULL, frame, 0, 0, 0, 0, rect.width,
rect.height, GDK_RGB_DITHER_NONE, 0, 0);
gdk_window_set_back_pixmap(w, window->pixmap, FALSE);
gdk_window_clear(w);
#endif
}