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317 lines
11 KiB
317 lines
11 KiB
/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2012
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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{
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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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