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298 lines
10 KiB
298 lines
10 KiB
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/*
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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xrdp: A Remote Desktop Protocol server.
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Copyright (C) Jay Sorg 2004-2006
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region
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*/
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#include "xrdp.h"
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/*****************************************************************************/
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struct xrdp_region* APP_CC
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xrdp_region_create(struct xrdp_wm* wm)
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{
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struct xrdp_region* self;
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self = (struct xrdp_region*)g_malloc(sizeof(struct xrdp_region), 1);
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self->wm = wm;
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self->rects = list_create();
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self->rects->auto_free = 1;
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return self;
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}
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/*****************************************************************************/
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void APP_CC
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xrdp_region_delete(struct xrdp_region* self)
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{
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if (self == 0)
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{
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return;
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}
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list_delete(self->rects);
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g_free(self);
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}
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/*****************************************************************************/
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int APP_CC
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xrdp_region_add_rect(struct xrdp_region* self, struct xrdp_rect* rect)
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{
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struct xrdp_rect* r;
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r = (struct xrdp_rect*)g_malloc(sizeof(struct xrdp_rect), 1);
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*r = *rect;
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list_add_item(self->rects, (long)r);
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return 0;
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}
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/*****************************************************************************/
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int APP_CC
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xrdp_region_insert_rect(struct xrdp_region* self, int i, int left,
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int top, int right, int bottom)
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{
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struct xrdp_rect* r;
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r = (struct xrdp_rect*)g_malloc(sizeof(struct xrdp_rect), 1);
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r->left = left;
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r->top = top;
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r->right = right;
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r->bottom = bottom;
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list_insert_item(self->rects, i, (long)r);
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return 0;
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}
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/*****************************************************************************/
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int APP_CC
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xrdp_region_subtract_rect(struct xrdp_region* self,
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struct xrdp_rect* rect)
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{
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struct xrdp_rect* r;
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struct xrdp_rect rect1;
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int i;
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for (i = self->rects->count - 1; i >= 0; i--)
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{
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r = (struct xrdp_rect*)list_get_item(self->rects, i);
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rect1 = *r;
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r = &rect1;
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if (rect->left <= r->left &&
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rect->top <= r->top &&
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rect->right >= r->right &&
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rect->bottom >= r->bottom)
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{ /* rect is not visible */
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list_remove_item(self->rects, i);
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}
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else if (rect->right < r->left ||
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rect->bottom < r->top ||
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rect->top > r->bottom ||
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rect->left > r->right)
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{ /* rect are not related */
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}
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else if (rect->left <= r->left &&
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rect->right >= r->right &&
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rect->bottom < r->bottom &&
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rect->top <= r->top)
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{ /* partially covered(whole top) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, rect->bottom,
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r->right, r->bottom);
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}
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else if (rect->top <= r->top &&
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rect->bottom >= r->bottom &&
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rect->right < r->right &&
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rect->left <= r->left)
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{ /* partially covered(left) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, rect->right, r->top,
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r->right, r->bottom);
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}
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else if (rect->left <= r->left &&
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rect->right >= r->right &&
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rect->top > r->top &&
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rect->bottom >= r->bottom)
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{ /* partially covered(bottom) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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r->right, rect->top);
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}
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else if (rect->top <= r->top &&
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rect->bottom >= r->bottom &&
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rect->left > r->left &&
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rect->right >= r->right)
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{ /* partially covered(right) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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rect->left, r->bottom);
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}
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else if (rect->left <= r->left &&
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rect->top <= r->top &&
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rect->right < r->right &&
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rect->bottom < r->bottom)
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{ /* partially covered(top left) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, rect->right, r->top,
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r->right, rect->bottom);
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xrdp_region_insert_rect(self, i, r->left, rect->bottom,
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r->right, r->bottom);
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}
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else if (rect->left <= r->left &&
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rect->bottom >= r->bottom &&
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rect->right < r->right &&
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rect->top > r->top)
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{ /* partially covered(bottom left) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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r->right, rect->top);
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xrdp_region_insert_rect(self, i, rect->right, rect->top,
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r->right, r->bottom);
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}
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else if (rect->left > r->left &&
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rect->right >= r->right &&
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rect->top <= r->top &&
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rect->bottom < r->bottom)
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{ /* partially covered(top right) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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rect->left, r->bottom);
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xrdp_region_insert_rect(self, i, rect->left, rect->bottom,
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r->right, r->bottom);
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}
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else if (rect->left > r->left &&
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rect->right >= r->right &&
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rect->top > r->top &&
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rect->bottom >= r->bottom)
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{ /* partially covered(bottom right) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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r->right, rect->top);
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xrdp_region_insert_rect(self, i, r->left, rect->top,
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rect->left, r->bottom);
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}
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else if (rect->left > r->left &&
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rect->top <= r->top &&
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rect->right < r->right &&
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rect->bottom >= r->bottom)
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{ /* 2 rects, one on each end */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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rect->left, r->bottom);
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xrdp_region_insert_rect(self, i, rect->right, r->top,
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r->right, r->bottom);
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}
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else if (rect->left <= r->left &&
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rect->top > r->top &&
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rect->right >= r->right &&
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rect->bottom < r->bottom)
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{ /* 2 rects, one on each end */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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r->right, rect->top);
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xrdp_region_insert_rect(self, i, r->left, rect->bottom,
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r->right, r->bottom);
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}
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else if (rect->left > r->left &&
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rect->right < r->right &&
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rect->top <= r->top &&
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rect->bottom < r->bottom)
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{ /* partially covered(top) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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rect->left, r->bottom);
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xrdp_region_insert_rect(self, i, rect->left, rect->bottom,
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rect->right, r->bottom);
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xrdp_region_insert_rect(self, i, rect->right, r->top,
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r->right, r->bottom);
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}
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else if (rect->top > r->top &&
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rect->bottom < r->bottom &&
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rect->left <= r->left &&
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rect->right < r->right)
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{ /* partially covered(left) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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r->right, rect->top);
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xrdp_region_insert_rect(self, i, rect->right, rect->top,
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r->right, rect->bottom);
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xrdp_region_insert_rect(self, i, r->left, rect->bottom,
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r->right, r->bottom);
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}
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else if (rect->left > r->left &&
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rect->right < r->right &&
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rect->bottom >= r->bottom &&
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rect->top > r->top)
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{ /* partially covered(bottom) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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rect->left, r->bottom);
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xrdp_region_insert_rect(self, i, rect->left, r->top,
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rect->right, rect->top);
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xrdp_region_insert_rect(self, i, rect->right, r->top,
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r->right, r->bottom);
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}
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else if (rect->top > r->top &&
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rect->bottom < r->bottom &&
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rect->right >= r->right &&
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rect->left > r->left)
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{ /* partially covered(right) */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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r->right, rect->top);
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xrdp_region_insert_rect(self, i, r->left, rect->top,
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rect->left, rect->bottom);
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xrdp_region_insert_rect(self, i, r->left, rect->bottom,
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r->right, r->bottom);
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}
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else if (rect->left > r->left &&
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rect->top > r->top &&
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rect->right < r->right &&
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rect->bottom < r->bottom)
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{ /* totally contained, 4 rects */
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list_remove_item(self->rects, i);
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xrdp_region_insert_rect(self, i, r->left, r->top,
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r->right, rect->top);
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xrdp_region_insert_rect(self, i, r->left, rect->top,
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rect->left, rect->bottom);
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xrdp_region_insert_rect(self, i, r->left, rect->bottom,
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r->right, r->bottom);
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xrdp_region_insert_rect(self, i, rect->right, rect->top,
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r->right, rect->bottom);
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}
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else
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{
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g_writeln("error in xrdp_region_subtract_rect");
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}
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}
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return 0;
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}
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/*****************************************************************************/
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int APP_CC
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xrdp_region_get_rect(struct xrdp_region* self, int index,
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struct xrdp_rect* rect)
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{
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struct xrdp_rect* r;
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r = (struct xrdp_rect*)list_get_item(self->rects, index);
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if (r == 0)
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{
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return 1;
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}
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*rect = *r;
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return 0;
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}
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