rect.h

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
 
#ifndef GUAC_RECT_H
#define GUAC_RECT_H
 
#include "mem.h"
#include "rect-types.h"

#define GUAC_RECT_MUTABLE_BUFFER(rect, buffer, stride, bpp) ((void*) (        \
            ((unsigned char*) (buffer))                                       \
                + guac_mem_ckd_mul_or_die((rect).top, stride)                 \
                + guac_mem_ckd_mul_or_die((rect).left, bpp)))

#define GUAC_RECT_CONST_BUFFER(rect, buffer, stride, bpp) ((const void*) (    \
            ((const unsigned char*) (buffer))                                 \
                + guac_mem_ckd_mul_or_die((rect).top, stride)                 \
                + guac_mem_ckd_mul_or_die((rect).left, bpp)))
 
struct guac_rect {

    int left;

    int top;

    int right;

    int bottom;
 
};

void guac_rect_init(guac_rect* rect, int x, int y, int width, int height);

void guac_rect_align(guac_rect* rect, unsigned int bits);

void guac_rect_extend(guac_rect* rect, const guac_rect* min);

void guac_rect_constrain(guac_rect* rect, const guac_rect* max);

void guac_rect_shrink(guac_rect* rect, int max_width, int max_height);

int guac_rect_intersects(const guac_rect* a, const guac_rect* b);

int guac_rect_is_empty(const guac_rect* rect);

int guac_rect_width(const guac_rect* rect);

int guac_rect_height(const guac_rect* rect);
 
#endif