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gfx/thebes/gfxRect.h@b8a032363ba2 (annotated)

gfx/thebes/gfxRect.h

Thu, 22 Jan 2015 13:21:57 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 22 Jan 2015 13:21:57 +0100
branch
TOR_BUG_9701
changeset 15
b8a032363ba2
permissions
-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0 1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0 2 * This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #ifndef GFX_RECT_H
michael@0 7 #define GFX_RECT_H
michael@0 8
michael@0 9 #include "gfxTypes.h"
michael@0 10 #include "gfxPoint.h"
michael@0 11 #include "nsDebug.h"
michael@0 12 #include "nsRect.h"
michael@0 13 #include "mozilla/gfx/BaseMargin.h"
michael@0 14 #include "mozilla/gfx/BaseRect.h"
michael@0 15 #include "mozilla/Assertions.h"
michael@0 16
michael@0 17 struct gfxMargin : public mozilla::gfx::BaseMargin<gfxFloat, gfxMargin> {
michael@0 18 typedef mozilla::gfx::BaseMargin<gfxFloat, gfxMargin> Super;
michael@0 19
michael@0 20 // Constructors
michael@0 21 gfxMargin() : Super() {}
michael@0 22 gfxMargin(const gfxMargin& aMargin) : Super(aMargin) {}
michael@0 23 gfxMargin(gfxFloat aTop, gfxFloat aRight, gfxFloat aBottom, gfxFloat aLeft)
michael@0 24 : Super(aTop, aRight, aBottom, aLeft) {}
michael@0 25 };
michael@0 26
michael@0 27 namespace mozilla {
michael@0 28 namespace css {
michael@0 29 enum Corner {
michael@0 30 // this order is important!
michael@0 31 eCornerTopLeft = 0,
michael@0 32 eCornerTopRight = 1,
michael@0 33 eCornerBottomRight = 2,
michael@0 34 eCornerBottomLeft = 3,
michael@0 35 eNumCorners = 4
michael@0 36 };
michael@0 37 }
michael@0 38 }
michael@0 39 #define NS_CORNER_TOP_LEFT mozilla::css::eCornerTopLeft
michael@0 40 #define NS_CORNER_TOP_RIGHT mozilla::css::eCornerTopRight
michael@0 41 #define NS_CORNER_BOTTOM_RIGHT mozilla::css::eCornerBottomRight
michael@0 42 #define NS_CORNER_BOTTOM_LEFT mozilla::css::eCornerBottomLeft
michael@0 43 #define NS_NUM_CORNERS mozilla::css::eNumCorners
michael@0 44
michael@0 45 #define NS_FOR_CSS_CORNERS(var_) \
michael@0 46 for (mozilla::css::Corner var_ = NS_CORNER_TOP_LEFT; \
michael@0 47 var_ <= NS_CORNER_BOTTOM_LEFT; \
michael@0 48 var_++)
michael@0 49
michael@0 50 static inline mozilla::css::Corner operator++(mozilla::css::Corner& corner, int) {
michael@0 51 NS_PRECONDITION(corner >= NS_CORNER_TOP_LEFT &&
michael@0 52 corner < NS_NUM_CORNERS, "Out of range corner");
michael@0 53 corner = mozilla::css::Corner(corner + 1);
michael@0 54 return corner;
michael@0 55 }
michael@0 56
michael@0 57 struct gfxRect :
michael@0 58 public mozilla::gfx::BaseRect<gfxFloat, gfxRect, gfxPoint, gfxSize, gfxMargin> {
michael@0 59 typedef mozilla::gfx::BaseRect<gfxFloat, gfxRect, gfxPoint, gfxSize, gfxMargin> Super;
michael@0 60
michael@0 61 gfxRect() : Super() {}
michael@0 62 gfxRect(const gfxPoint& aPos, const gfxSize& aSize) :
michael@0 63 Super(aPos, aSize) {}
michael@0 64 gfxRect(gfxFloat aX, gfxFloat aY, gfxFloat aWidth, gfxFloat aHeight) :
michael@0 65 Super(aX, aY, aWidth, aHeight) {}
michael@0 66 gfxRect(const nsIntRect& aRect) :
michael@0 67 Super(aRect.x, aRect.y, aRect.width, aRect.height) {}
michael@0 68
michael@0 69 /**
michael@0 70 * Return true if all components of this rect are within
michael@0 71 * aEpsilon of integer coordinates, defined as
michael@0 72 * |round(coord) - coord| <= |aEpsilon|
michael@0 73 * for x,y,width,height.
michael@0 74 */
michael@0 75 bool WithinEpsilonOfIntegerPixels(gfxFloat aEpsilon) const;
michael@0 76
michael@0 77 gfxPoint AtCorner(mozilla::css::Corner corner) const {
michael@0 78 switch (corner) {
michael@0 79 case NS_CORNER_TOP_LEFT: return TopLeft();
michael@0 80 case NS_CORNER_TOP_RIGHT: return TopRight();
michael@0 81 case NS_CORNER_BOTTOM_RIGHT: return BottomRight();
michael@0 82 case NS_CORNER_BOTTOM_LEFT: return BottomLeft();
michael@0 83 default:
michael@0 84 NS_ERROR("Invalid corner!");
michael@0 85 break;
michael@0 86 }
michael@0 87 return gfxPoint(0.0, 0.0);
michael@0 88 }
michael@0 89
michael@0 90 gfxPoint CCWCorner(mozilla::css::Side side) const {
michael@0 91 switch (side) {
michael@0 92 case NS_SIDE_TOP: return TopLeft();
michael@0 93 case NS_SIDE_RIGHT: return TopRight();
michael@0 94 case NS_SIDE_BOTTOM: return BottomRight();
michael@0 95 case NS_SIDE_LEFT: return BottomLeft();
michael@0 96 }
michael@0 97 MOZ_CRASH("Incomplete switch");
michael@0 98 }
michael@0 99
michael@0 100 gfxPoint CWCorner(mozilla::css::Side side) const {
michael@0 101 switch (side) {
michael@0 102 case NS_SIDE_TOP: return TopRight();
michael@0 103 case NS_SIDE_RIGHT: return BottomRight();
michael@0 104 case NS_SIDE_BOTTOM: return BottomLeft();
michael@0 105 case NS_SIDE_LEFT: return TopLeft();
michael@0 106 }
michael@0 107 MOZ_CRASH("Incomplete switch");
michael@0 108 }
michael@0 109
michael@0 110 /* Conditions this border to Cairo's max coordinate space.
michael@0 111 * The caller can check IsEmpty() after Condition() -- if it's TRUE,
michael@0 112 * the caller can possibly avoid doing any extra rendering.
michael@0 113 */
michael@0 114 void Condition();
michael@0 115
michael@0 116 void Scale(gfxFloat k) {
michael@0 117 NS_ASSERTION(k >= 0.0, "Invalid (negative) scale factor");
michael@0 118 x *= k;
michael@0 119 y *= k;
michael@0 120 width *= k;
michael@0 121 height *= k;
michael@0 122 }
michael@0 123
michael@0 124 void Scale(gfxFloat sx, gfxFloat sy) {
michael@0 125 NS_ASSERTION(sx >= 0.0, "Invalid (negative) scale factor");
michael@0 126 NS_ASSERTION(sy >= 0.0, "Invalid (negative) scale factor");
michael@0 127 x *= sx;
michael@0 128 y *= sy;
michael@0 129 width *= sx;
michael@0 130 height *= sy;
michael@0 131 }
michael@0 132
michael@0 133 void ScaleInverse(gfxFloat k) {
michael@0 134 NS_ASSERTION(k > 0.0, "Invalid (negative) scale factor");
michael@0 135 x /= k;
michael@0 136 y /= k;
michael@0 137 width /= k;
michael@0 138 height /= k;
michael@0 139 }
michael@0 140 };
michael@0 141
michael@0 142 struct gfxCornerSizes {
michael@0 143 gfxSize sizes[NS_NUM_CORNERS];
michael@0 144
michael@0 145 gfxCornerSizes () { }
michael@0 146
michael@0 147 gfxCornerSizes (gfxFloat v) {
michael@0 148 for (int i = 0; i < NS_NUM_CORNERS; i++)
michael@0 149 sizes[i].SizeTo(v, v);
michael@0 150 }
michael@0 151
michael@0 152 gfxCornerSizes (gfxFloat tl, gfxFloat tr, gfxFloat br, gfxFloat bl) {
michael@0 153 sizes[NS_CORNER_TOP_LEFT].SizeTo(tl, tl);
michael@0 154 sizes[NS_CORNER_TOP_RIGHT].SizeTo(tr, tr);
michael@0 155 sizes[NS_CORNER_BOTTOM_RIGHT].SizeTo(br, br);
michael@0 156 sizes[NS_CORNER_BOTTOM_LEFT].SizeTo(bl, bl);
michael@0 157 }
michael@0 158
michael@0 159 gfxCornerSizes (const gfxSize& tl, const gfxSize& tr, const gfxSize& br, const gfxSize& bl) {
michael@0 160 sizes[NS_CORNER_TOP_LEFT] = tl;
michael@0 161 sizes[NS_CORNER_TOP_RIGHT] = tr;
michael@0 162 sizes[NS_CORNER_BOTTOM_RIGHT] = br;
michael@0 163 sizes[NS_CORNER_BOTTOM_LEFT] = bl;
michael@0 164 }
michael@0 165
michael@0 166 const gfxSize& operator[] (mozilla::css::Corner index) const {
michael@0 167 return sizes[index];
michael@0 168 }
michael@0 169
michael@0 170 gfxSize& operator[] (mozilla::css::Corner index) {
michael@0 171 return sizes[index];
michael@0 172 }
michael@0 173
michael@0 174 void Scale(gfxFloat aXScale, gfxFloat aYScale)
michael@0 175 {
michael@0 176 for (int i = 0; i < NS_NUM_CORNERS; i++)
michael@0 177 sizes[i].Scale(aXScale, aYScale);
michael@0 178 }
michael@0 179
michael@0 180 const gfxSize TopLeft() const { return sizes[NS_CORNER_TOP_LEFT]; }
michael@0 181 gfxSize& TopLeft() { return sizes[NS_CORNER_TOP_LEFT]; }
michael@0 182
michael@0 183 const gfxSize TopRight() const { return sizes[NS_CORNER_TOP_RIGHT]; }
michael@0 184 gfxSize& TopRight() { return sizes[NS_CORNER_TOP_RIGHT]; }
michael@0 185
michael@0 186 const gfxSize BottomLeft() const { return sizes[NS_CORNER_BOTTOM_LEFT]; }
michael@0 187 gfxSize& BottomLeft() { return sizes[NS_CORNER_BOTTOM_LEFT]; }
michael@0 188
michael@0 189 const gfxSize BottomRight() const { return sizes[NS_CORNER_BOTTOM_RIGHT]; }
michael@0 190 gfxSize& BottomRight() { return sizes[NS_CORNER_BOTTOM_RIGHT]; }
michael@0 191 };
michael@0 192 #endif /* GFX_RECT_H */

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