gecko/gfx/thebes/public/gfxRect.h
2007-05-29 19:46:54 -07:00

142 lines
5.0 KiB
C

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Oracle Corporation code.
*
* The Initial Developer of the Original Code is Oracle Corporation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@pavlov.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef GFX_RECT_H
#define GFX_RECT_H
#include "gfxTypes.h"
#include "gfxPoint.h"
struct THEBES_API gfxRect {
// pt? point?
gfxPoint pos;
gfxSize size;
gfxRect() {}
gfxRect(const gfxRect& s) : pos(s.pos), size(s.size) {}
gfxRect(const gfxPoint& _pos, const gfxSize& _size) : pos(_pos), size(_size) {}
gfxRect(gfxFloat _x, gfxFloat _y, gfxFloat _width, gfxFloat _height) :
pos(_x, _y), size(_width, _height) {}
int operator==(const gfxRect& s) const {
return (pos == s.pos) && (size == s.size);
}
int operator!=(const gfxRect& s) const {
return (pos != s.pos) || (size != s.size);
}
const gfxRect& MoveBy(const gfxPoint& aPt) {
pos = pos + aPt;
return *this;
}
gfxRect operator+(const gfxPoint& aPt) const {
return gfxRect(pos + aPt, size);
}
gfxFloat Width() const { return size.width; }
gfxFloat Height() const { return size.height; }
gfxFloat X() const { return pos.x; }
gfxFloat Y() const { return pos.y; }
gfxFloat XMost() const { return pos.x + size.width; }
gfxFloat YMost() const { return pos.y + size.height; }
PRBool IsEmpty() const { return size.width <= 0 || size.height <= 0; }
gfxRect Intersect(const gfxRect& aRect) const;
gfxRect Union(const gfxRect& aRect) const;
// XXX figure out what methods (intersect, union, etc) we use and add them.
void Inset(gfxFloat k) {
pos.x += k;
pos.y += k;
size.width = PR_MAX(0.0, size.width - k * 2.0);
size.height = PR_MAX(0.0, size.height - k * 2.0);
}
void Inset(gfxFloat top, gfxFloat right, gfxFloat bottom, gfxFloat left) {
pos.x += left;
pos.y += top;
size.width = PR_MAX(0.0, size.width - (right+left));
size.height = PR_MAX(0.0, size.height - (bottom+top));
}
void Inset(const gfxFloat *sides) {
Inset(sides[0], sides[1], sides[2], sides[3]);
}
void Outset(gfxFloat k) {
pos.x -= k;
pos.y -= k;
size.width = PR_MAX(0.0, size.width + k * 2.0);
size.height = PR_MAX(0.0, size.height + k * 2.0);
}
void Outset(gfxFloat top, gfxFloat right, gfxFloat bottom, gfxFloat left) {
pos.x -= left;
pos.y -= top;
size.width = PR_MAX(0.0, size.width + (right+left));
size.height = PR_MAX(0.0, size.height + (bottom+top));
}
void Outset(const gfxFloat *sides) {
Outset(sides[0], sides[1], sides[2], sides[3]);
}
void Round();
// grabbing specific points
gfxPoint TopLeft() const { return gfxPoint(pos); }
gfxPoint TopRight() const { return pos + gfxSize(size.width, 0.0); }
gfxPoint BottomLeft() const { return pos + gfxSize(0.0, size.height); }
gfxPoint BottomRight() const { return pos + size; }
/* Conditions this border to Cairo's max coordinate space.
* The caller can check IsEmpty() after Condition() -- if it's TRUE,
* the caller can possibly avoid doing any extra rendering.
*/
void Condition();
void Scale(gfxFloat k) {
NS_ASSERTION(k >= 0.0, "Invalid (negative) scale factor");
pos.x *= k;
pos.y *= k;
size.width *= k;
size.height *= k;
}
};
#endif /* GFX_RECT_H */