gecko-dev/lib/liblayer/include/xp_rect.h

69 строки
2.1 KiB
C

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/*
* xp_rect.c - Simple rectangle operations
*/
#ifndef _XP_RECT_H_
#define _XP_RECT_H_
#include "prtypes.h"
#include "cl_types.h"
/* A cross-platform rectangle */
struct _XP_Rect {
int32 top;
int32 left;
int32 bottom;
int32 right;
};
XP_BEGIN_PROTOS
/* This could be a macro */
extern void XP_CopyRect(XP_Rect *src, XP_Rect *dest);
/* Predicate to compare two rectangles */
extern PRBool XP_EqualRect(XP_Rect *r1, XP_Rect *r2);
/* Offset rectangle in 2D space. This could be a macro */
extern void XP_OffsetRect(XP_Rect *rect, int32 x_offset, int32 y_offset);
/* TRUE if point is within the boundary of the rect */
extern PRBool XP_PointInRect(XP_Rect *rect, int32 x, int32 y);
/* TRUE if any parts of the two rectangles overlap */
extern PRBool XP_RectsOverlap(XP_Rect *rect1, XP_Rect *rect2);
/* TRUE if rect2 is entirely contained within rect1 */
extern PRBool XP_RectContainsRect(XP_Rect *rect1, XP_Rect *rect2);
/* dst = src1 intersect src2. dst can be one of src1 or src2 */
extern void XP_IntersectRect(XP_Rect *src1, XP_Rect *src2, XP_Rect *dst);
/* dst = bounding box of src1 and src2. dst can be one of src1 or src2 */
extern void XP_RectsBbox(XP_Rect *src1, XP_Rect *src2, XP_Rect *dst);
/* Does the rectangle enclose any pixels? */
extern PRBool XP_IsEmptyRect(XP_Rect *rect);
XP_END_PROTOS
#endif /* _XP_RECT_H_ */