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