/* Copyright (C) 1999 Dominik Vogt
*
* 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
*/
/*
** WinMagic.c:
** This file supplies routines for moving and resizing windows in an animated
** fashion.
*/
#include "config.h"
#include <X11/Xlib.h>
#include <fvwmlib.h>
#include <stdio.h>
/* Continuously moves and resized window win from start geometry (s_?) to end
* geometry (e_?). Waits for delay_ms milliseconds after each step except the
* last (max. 10 seconds per step). The number of steps is determined by the
* steps argument (min. 1 and max. 10000). If the pointer ppctMovement is NULL
* the steps are all the same width, if it is given it is interpreted as a
* pointer to an array of float percent values. These are used to determine the
* distance of each step counted from the start position, i.e. 0.0 means the
* start position itself, 50.0 is halfway between start and end position and
* 100.0 is the end position. Values smaller than 0.0 or bigger than 100.0 are
* allowed too. The do_flush flag determines of all requests are sent to the
* X server immediately (True) or not (False). The use_hints detrmines if the
* min size and resize hints are used */
void SlideWindow(
Display *dpy, Window win,
int s_x, int s_y, unsigned int s_w, unsigned int s_h,
int e_x, int e_y, unsigned int e_w, unsigned int e_h,
int steps, int delay_ms, float *ppctMovement,
Bool do_sync, Bool use_hints)
{
int x = 0;
int y = 0;
int w = 0;
int h = 0;
int g_w = 0;
int g_h = 0; /* -Wall fixes :o( */
int min_w = 1;
int min_h = 1;
int inc_w = 1;
int inc_h = 1;
int i;
unsigned int us;
Bool is_mapped;
Bool keep_x1 = False;
Bool keep_x2 = False;
Bool keep_y1 = False;
Bool keep_y2 = False;
XSizeHints hints;
long dummy;
/* check limits */
if (delay_ms > 10000)
{
/* max. 10 seconds per step */
us = 10000000;
}
else if (delay_ms < 0)
{
us = 0;
}
else
{
us = 1000 * delay_ms;
}
if (steps > 10000)
{
/* max. 10000 steps */
steps = 10000;
}
if (steps <= 0)
{
/* no steps, no animation */
if (e_w == 0 || e_h == 0)
{
XUnmapWindow(dpy, win);
}
else
{
XMoveResizeWindow(dpy, win, e_x, e_y, e_w, e_h);
XMapWindow(dpy, win);
XMapSubwindows(dpy, win);
}
if (do_sync)
XSync(dpy, 0);
return;
}
is_mapped = False;
/* Get the mini (re)size hints and do some check consistency */
if (use_hints && XGetWMNormalHints(dpy, win, &hints, &dummy))
{
if (hints.flags & PMinSize)
{
if (hints.min_width >= 1 && hints.min_width <= max(e_w,s_w))
min_w = hints.min_width;
if (hints.min_height >= 1 && hints.min_height <= max(e_h,s_h))
min_h = hints.min_height;
}
if (hints.flags & PResizeInc)
{
if (hints.width_inc >= 1 && hints.width_inc <= max(e_w,s_w))
inc_w = hints.width_inc;
if (hints.height_inc >= 1 && hints.width_inc <= max(e_h,s_h))
inc_h = hints.height_inc;
}
}
if (s_x == e_x)
keep_x1 = True;
if (s_y == e_y)
keep_y1 = True;
if (s_x + s_w == e_x + e_w)
keep_x2 = True;
if (s_y + s_h == e_y + e_h)
keep_y2 = True;
/* animate the window */
for (i = 0; i <= steps; i++)
{
if (i == steps)
{
x = e_x;
y = e_y;
}
else
{
float f;
if (ppctMovement == NULL)
{
f = (float)i / (float)steps;
}
else
{
f = ppctMovement[i] / (float)steps;
}
x = (int)((float)s_x + (float)(e_x - s_x) * f);
y = (int)((float)s_y + (float)(e_y - s_y) * f);
}
w = s_w + (int)(e_w - s_w) * i / steps;
h = s_h + (int)(e_h - s_h) * i / steps;
/* take the resize inc in account */
g_w = w - ((w - min_w) % inc_w);
x += w-g_w;
g_h = h - ((h - min_h) % inc_h);
y += h-g_h;
/* prevent annoying flickering */
if (keep_x1)
x = s_x;
if (keep_y1)
y = s_y;
if (keep_x2)
g_w = s_x + s_w - x;
if (keep_y2)
g_h = s_y + s_h - y;
if (g_w < min_w || g_h < min_h)
{
/* don't show zero width/height windows */
if (is_mapped)
{
XUnmapWindow(dpy, win);
is_mapped = False;
}
}
else
{
XMoveResizeWindow(dpy, win, x, y, g_w, g_h);
if (!is_mapped)
{
XMapWindow(dpy, win);
XMapSubwindows(dpy, win);
is_mapped = True;
}
}
/* make sure everything is updated */
if (do_sync)
XSync(dpy, 0);
if (us && i < steps && is_mapped)
{
/* don't sleep after the last step */
usleep(us);
}
} /* for */
/* if hints and asked size do not agree try to respect the caller */
if (e_w > 0 && e_h > 0 && (!is_mapped || g_w != w || g_h != w))
{
XMoveResizeWindow(dpy, win, x, y, w, h);
if (!is_mapped)
{
XMapWindow(dpy, win);
XMapSubwindows(dpy, win);
}
if (do_sync)
XSync(dpy, 0);
}
return;
}
/* This function returns the top level ancestor of the window 'child'. It
* returns None if an error occurs or if the window is a top level window. */
Window GetTopAncestorWindow(Display *dpy, Window child)
{
Window root = None;
Window ancestor = child;
Window last_child = child;
Window *children;
unsigned int nchildren;
if (child == None)
return None;
while (ancestor != root)
{
last_child = ancestor;
children = NULL;
if (!XQueryTree(dpy, last_child, &root, &ancestor, &children, &nchildren))
return None;
if (children)
XFree(children);
}
return (last_child == child) ? None : last_child;
}
/* Given a parent window this function returns a list of children of the
* parent window that have the same size, depth, visual and colormap as the
* parent window and that have position +0+0 within the parent. If the 'depth'
* argument is non-zero it must match the depth of the window. The 'visualid'
* and 'colormap' arguments work just the same. The number of matching
* children is returned. The list of children is returned in *children. If this
* list is non-NULL, it must be free'd with XFree. If an error occurs or the
* parent window does not match the required depth, colormap or visualid, the
* function returns -1 and NULL in *children. */
int GetEqualSizeChildren(
Display *dpy, Window parent, int depth, VisualID visualid, Colormap colormap,
Window **ret_children)
{
XWindowAttributes pxwa;
XWindowAttributes cxwa;
Window JunkW;
Window *children;
unsigned int nchildren;
int i;
int j;
if (!XGetWindowAttributes(dpy, parent, &pxwa))
return -1;
if (!XQueryTree(dpy, parent, &JunkW, &JunkW, &children, &nchildren))
return -1;
if (depth && pxwa.depth != depth)
return -1;
if (visualid && XVisualIDFromVisual(pxwa.visual) != visualid)
return -1;
if (colormap && pxwa.colormap != colormap)
return -1;
for (i = 0, j = 0; i < nchildren; i++)
{
if (XGetWindowAttributes(dpy, children[i], &cxwa) &&
cxwa.x == 0 &&
cxwa.y == 0 &&
cxwa.width == pxwa.width &&
cxwa.height == pxwa.height &&
(!depth || cxwa.depth == depth) &&
(!visualid || XVisualIDFromVisual(cxwa.visual) == visualid) &&
cxwa.class == InputOutput &&
(!colormap || cxwa.colormap == colormap))
{
children[j++] = children[i];
}
} /* for */
if (j == 0)
{
if (children)
{
XFree(children);
children = NULL;
}
}
*ret_children = children;
return j;
}
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