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/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2014
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* region
*/
#include "xrdp.h"
/*****************************************************************************/
struct xrdp_region *APP_CC
xrdp_region_create(struct xrdp_wm *wm)
{
struct xrdp_region *self;
self = (struct xrdp_region *)g_malloc(sizeof(struct xrdp_region), 1);
self->wm = wm;
self->rects = list_create();
self->rects->auto_free = 1;
return self;
}
/*****************************************************************************/
void APP_CC
xrdp_region_delete(struct xrdp_region *self)
{
if (self == 0)
{
return;
}
list_delete(self->rects);
g_free(self);
}
/*****************************************************************************/
int APP_CC
xrdp_region_add_rect(struct xrdp_region *self, struct xrdp_rect *rect)
{
struct xrdp_rect *r;
r = (struct xrdp_rect *)g_malloc(sizeof(struct xrdp_rect), 1);
*r = *rect;
list_add_item(self->rects, (long)r);
return 0;
}
/*****************************************************************************/
int APP_CC
xrdp_region_insert_rect(struct xrdp_region *self, int i, int left,
int top, int right, int bottom)
{
struct xrdp_rect *r;
r = (struct xrdp_rect *)g_malloc(sizeof(struct xrdp_rect), 1);
r->left = left;
r->top = top;
r->right = right;
r->bottom = bottom;
list_insert_item(self->rects, i, (long)r);
return 0;
}
/*****************************************************************************/
int APP_CC
xrdp_region_subtract_rect(struct xrdp_region *self,
struct xrdp_rect *rect)
{
struct xrdp_rect *r;
struct xrdp_rect rect1;
int i;
for (i = self->rects->count - 1; i >= 0; i--)
{
r = (struct xrdp_rect *)list_get_item(self->rects, i);
rect1 = *r;
r = &rect1;
if (rect->left <= r->left &&
rect->top <= r->top &&
rect->right >= r->right &&
rect->bottom >= r->bottom)
{
/* rect is not visible */
list_remove_item(self->rects, i);
}
else if (rect->right < r->left ||
rect->bottom < r->top ||
rect->top > r->bottom ||
rect->left > r->right)
{
/* rect are not related */
}
else if (rect->left <= r->left &&
rect->right >= r->right &&
rect->bottom < r->bottom &&
rect->top <= r->top)
{
/* partially covered(whole top) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, rect->bottom,
r->right, r->bottom);
}
else if (rect->top <= r->top &&
rect->bottom >= r->bottom &&
rect->right < r->right &&
rect->left <= r->left)
{
/* partially covered(left) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, rect->right, r->top,
r->right, r->bottom);
}
else if (rect->left <= r->left &&
rect->right >= r->right &&
rect->top > r->top &&
rect->bottom >= r->bottom)
{
/* partially covered(bottom) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
r->right, rect->top);
}
else if (rect->top <= r->top &&
rect->bottom >= r->bottom &&
rect->left > r->left &&
rect->right >= r->right)
{
/* partially covered(right) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
rect->left, r->bottom);
}
else if (rect->left <= r->left &&
rect->top <= r->top &&
rect->right < r->right &&
rect->bottom < r->bottom)
{
/* partially covered(top left) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, rect->right, r->top,
r->right, rect->bottom);
xrdp_region_insert_rect(self, i, r->left, rect->bottom,
r->right, r->bottom);
}
else if (rect->left <= r->left &&
rect->bottom >= r->bottom &&
rect->right < r->right &&
rect->top > r->top)
{
/* partially covered(bottom left) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
r->right, rect->top);
xrdp_region_insert_rect(self, i, rect->right, rect->top,
r->right, r->bottom);
}
else if (rect->left > r->left &&
rect->right >= r->right &&
rect->top <= r->top &&
rect->bottom < r->bottom)
{
/* partially covered(top right) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
rect->left, r->bottom);
xrdp_region_insert_rect(self, i, rect->left, rect->bottom,
r->right, r->bottom);
}
else if (rect->left > r->left &&
rect->right >= r->right &&
rect->top > r->top &&
rect->bottom >= r->bottom)
{
/* partially covered(bottom right) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
r->right, rect->top);
xrdp_region_insert_rect(self, i, r->left, rect->top,
rect->left, r->bottom);
}
else if (rect->left > r->left &&
rect->top <= r->top &&
rect->right < r->right &&
rect->bottom >= r->bottom)
{
/* 2 rects, one on each end */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
rect->left, r->bottom);
xrdp_region_insert_rect(self, i, rect->right, r->top,
r->right, r->bottom);
}
else if (rect->left <= r->left &&
rect->top > r->top &&
rect->right >= r->right &&
rect->bottom < r->bottom)
{
/* 2 rects, one on each end */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
r->right, rect->top);
xrdp_region_insert_rect(self, i, r->left, rect->bottom,
r->right, r->bottom);
}
else if (rect->left > r->left &&
rect->right < r->right &&
rect->top <= r->top &&
rect->bottom < r->bottom)
{
/* partially covered(top) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
rect->left, r->bottom);
xrdp_region_insert_rect(self, i, rect->left, rect->bottom,
rect->right, r->bottom);
xrdp_region_insert_rect(self, i, rect->right, r->top,
r->right, r->bottom);
}
else if (rect->top > r->top &&
rect->bottom < r->bottom &&
rect->left <= r->left &&
rect->right < r->right)
{
/* partially covered(left) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
r->right, rect->top);
xrdp_region_insert_rect(self, i, rect->right, rect->top,
r->right, rect->bottom);
xrdp_region_insert_rect(self, i, r->left, rect->bottom,
r->right, r->bottom);
}
else if (rect->left > r->left &&
rect->right < r->right &&
rect->bottom >= r->bottom &&
rect->top > r->top)
{
/* partially covered(bottom) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
rect->left, r->bottom);
xrdp_region_insert_rect(self, i, rect->left, r->top,
rect->right, rect->top);
xrdp_region_insert_rect(self, i, rect->right, r->top,
r->right, r->bottom);
}
else if (rect->top > r->top &&
rect->bottom < r->bottom &&
rect->right >= r->right &&
rect->left > r->left)
{
/* partially covered(right) */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
r->right, rect->top);
xrdp_region_insert_rect(self, i, r->left, rect->top,
rect->left, rect->bottom);
xrdp_region_insert_rect(self, i, r->left, rect->bottom,
r->right, r->bottom);
}
else if (rect->left > r->left &&
rect->top > r->top &&
rect->right < r->right &&
rect->bottom < r->bottom)
{
/* totally contained, 4 rects */
list_remove_item(self->rects, i);
xrdp_region_insert_rect(self, i, r->left, r->top,
r->right, rect->top);
xrdp_region_insert_rect(self, i, r->left, rect->top,
rect->left, rect->bottom);
xrdp_region_insert_rect(self, i, r->left, rect->bottom,
r->right, r->bottom);
xrdp_region_insert_rect(self, i, rect->right, rect->top,
r->right, rect->bottom);
}
else
{
g_writeln("error in xrdp_region_subtract_rect");
}
}
return 0;
}
/*****************************************************************************/
int APP_CC
xrdp_region_get_rect(struct xrdp_region *self, int index,
struct xrdp_rect *rect)
{
struct xrdp_rect *r;
r = (struct xrdp_rect *)list_get_item(self->rects, index);
if (r == 0)
{
return 1;
}
*rect = *r;
return 0;
}
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