зеркало из https://github.com/mozilla/gecko-dev.git
226 строки
7.8 KiB
C++
226 строки
7.8 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Oracle Corporation code.
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*
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* The Initial Developer of the Original Code is Oracle Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Stuart Parmenter <pavlov@pavlov.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef GFX_RECT_H
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#define GFX_RECT_H
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#include "nsAlgorithm.h"
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#include "gfxTypes.h"
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#include "gfxPoint.h"
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#include "gfxCore.h"
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#include "nsDebug.h"
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#include "mozilla/gfx/BaseMargin.h"
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#include "mozilla/gfx/BaseRect.h"
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#include "nsRect.h"
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struct gfxMargin : public mozilla::gfx::BaseMargin<gfxFloat, gfxMargin> {
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typedef mozilla::gfx::BaseMargin<gfxFloat, gfxMargin> Super;
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// Constructors
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gfxMargin() : Super() {}
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gfxMargin(const gfxMargin& aMargin) : Super(aMargin) {}
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gfxMargin(gfxFloat aLeft, gfxFloat aTop, gfxFloat aRight, gfxFloat aBottom)
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: Super(aLeft, aTop, aRight, aBottom) {}
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};
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namespace mozilla {
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namespace css {
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enum Corner {
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// this order is important!
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eCornerTopLeft = 0,
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eCornerTopRight = 1,
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eCornerBottomRight = 2,
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eCornerBottomLeft = 3,
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eNumCorners = 4
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};
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}
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}
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#define NS_CORNER_TOP_LEFT mozilla::css::eCornerTopLeft
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#define NS_CORNER_TOP_RIGHT mozilla::css::eCornerTopRight
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#define NS_CORNER_BOTTOM_RIGHT mozilla::css::eCornerBottomRight
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#define NS_CORNER_BOTTOM_LEFT mozilla::css::eCornerBottomLeft
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#define NS_NUM_CORNERS mozilla::css::eNumCorners
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#define NS_FOR_CSS_CORNERS(var_) \
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for (mozilla::css::Corner var_ = NS_CORNER_TOP_LEFT; \
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var_ <= NS_CORNER_BOTTOM_LEFT; \
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var_++)
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static inline mozilla::css::Corner operator++(mozilla::css::Corner& corner, int) {
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NS_PRECONDITION(corner >= NS_CORNER_TOP_LEFT &&
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corner < NS_NUM_CORNERS, "Out of range corner");
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corner = mozilla::css::Corner(corner + 1);
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return corner;
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}
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struct THEBES_API gfxRect :
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public mozilla::gfx::BaseRect<gfxFloat, gfxRect, gfxPoint, gfxSize, gfxMargin> {
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typedef mozilla::gfx::BaseRect<gfxFloat, gfxRect, gfxPoint, gfxSize, gfxMargin> Super;
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gfxRect() : Super() {}
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gfxRect(const gfxPoint& aPos, const gfxSize& aSize) :
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Super(aPos, aSize) {}
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gfxRect(gfxFloat aX, gfxFloat aY, gfxFloat aWidth, gfxFloat aHeight) :
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Super(aX, aY, aWidth, aHeight) {}
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gfxRect(const nsIntRect& aRect) :
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Super(aRect.x, aRect.y, aRect.width, aRect.height) {}
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/**
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* Return true if all components of this rect are within
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* aEpsilon of integer coordinates, defined as
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* |round(coord) - coord| <= |aEpsilon|
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* for x,y,width,height.
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*/
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bool WithinEpsilonOfIntegerPixels(gfxFloat aEpsilon) const;
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gfxPoint AtCorner(mozilla::css::Corner corner) const {
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switch (corner) {
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case NS_CORNER_TOP_LEFT: return TopLeft();
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case NS_CORNER_TOP_RIGHT: return TopRight();
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case NS_CORNER_BOTTOM_RIGHT: return BottomRight();
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case NS_CORNER_BOTTOM_LEFT: return BottomLeft();
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default:
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NS_ERROR("Invalid corner!");
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break;
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}
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return gfxPoint(0.0, 0.0);
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}
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gfxPoint CCWCorner(mozilla::css::Side side) const {
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switch (side) {
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case NS_SIDE_TOP: return TopLeft();
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case NS_SIDE_RIGHT: return TopRight();
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case NS_SIDE_BOTTOM: return BottomRight();
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case NS_SIDE_LEFT: return BottomLeft();
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default:
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NS_ERROR("Invalid side!");
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break;
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}
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return gfxPoint(0.0, 0.0);
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}
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gfxPoint CWCorner(mozilla::css::Side side) const {
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switch (side) {
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case NS_SIDE_TOP: return TopRight();
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case NS_SIDE_RIGHT: return BottomRight();
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case NS_SIDE_BOTTOM: return BottomLeft();
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case NS_SIDE_LEFT: return TopLeft();
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default:
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NS_ERROR("Invalid side!");
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break;
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}
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return gfxPoint(0.0, 0.0);
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}
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/* Conditions this border to Cairo's max coordinate space.
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* The caller can check IsEmpty() after Condition() -- if it's TRUE,
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* the caller can possibly avoid doing any extra rendering.
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*/
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void Condition();
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void Scale(gfxFloat k) {
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NS_ASSERTION(k >= 0.0, "Invalid (negative) scale factor");
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x *= k;
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y *= k;
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width *= k;
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height *= k;
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}
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void Scale(gfxFloat sx, gfxFloat sy) {
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NS_ASSERTION(sx >= 0.0, "Invalid (negative) scale factor");
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NS_ASSERTION(sy >= 0.0, "Invalid (negative) scale factor");
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x *= sx;
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y *= sy;
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width *= sx;
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height *= sy;
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}
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void ScaleInverse(gfxFloat k) {
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NS_ASSERTION(k > 0.0, "Invalid (negative) scale factor");
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x /= k;
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y /= k;
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width /= k;
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height /= k;
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}
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};
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struct THEBES_API gfxCornerSizes {
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gfxSize sizes[NS_NUM_CORNERS];
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gfxCornerSizes () { }
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gfxCornerSizes (gfxFloat v) {
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for (int i = 0; i < NS_NUM_CORNERS; i++)
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sizes[i].SizeTo(v, v);
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}
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gfxCornerSizes (gfxFloat tl, gfxFloat tr, gfxFloat br, gfxFloat bl) {
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sizes[NS_CORNER_TOP_LEFT].SizeTo(tl, tl);
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sizes[NS_CORNER_TOP_RIGHT].SizeTo(tr, tr);
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sizes[NS_CORNER_BOTTOM_RIGHT].SizeTo(br, br);
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sizes[NS_CORNER_BOTTOM_LEFT].SizeTo(bl, bl);
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}
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gfxCornerSizes (const gfxSize& tl, const gfxSize& tr, const gfxSize& br, const gfxSize& bl) {
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sizes[NS_CORNER_TOP_LEFT] = tl;
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sizes[NS_CORNER_TOP_RIGHT] = tr;
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sizes[NS_CORNER_BOTTOM_RIGHT] = br;
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sizes[NS_CORNER_BOTTOM_LEFT] = bl;
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}
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const gfxSize& operator[] (mozilla::css::Corner index) const {
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return sizes[index];
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}
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gfxSize& operator[] (mozilla::css::Corner index) {
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return sizes[index];
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}
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const gfxSize TopLeft() const { return sizes[NS_CORNER_TOP_LEFT]; }
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gfxSize& TopLeft() { return sizes[NS_CORNER_TOP_LEFT]; }
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const gfxSize TopRight() const { return sizes[NS_CORNER_TOP_RIGHT]; }
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gfxSize& TopRight() { return sizes[NS_CORNER_TOP_RIGHT]; }
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const gfxSize BottomLeft() const { return sizes[NS_CORNER_BOTTOM_LEFT]; }
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gfxSize& BottomLeft() { return sizes[NS_CORNER_BOTTOM_LEFT]; }
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const gfxSize BottomRight() const { return sizes[NS_CORNER_BOTTOM_RIGHT]; }
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gfxSize& BottomRight() { return sizes[NS_CORNER_BOTTOM_RIGHT]; }
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};
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#endif /* GFX_RECT_H */
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