1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- 2 * This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 #ifndef GFX_POINT_H 7 #define GFX_POINT_H 8 9 #include "nsMathUtils.h" 10 #include "mozilla/gfx/BaseSize.h" 11 #include "mozilla/gfx/BasePoint.h" 12 #include "mozilla/gfx/Matrix.h" 13 #include "nsSize.h" 14 #include "nsPoint.h" 15 16 #include "gfxTypes.h" 17 18 struct gfxSize : public mozilla::gfx::BaseSize<gfxFloat, gfxSize> { 19 typedef mozilla::gfx::BaseSize<gfxFloat, gfxSize> Super; 20 gfxSizegfxSize21 gfxSize() : Super() {} gfxSizegfxSize22 gfxSize(gfxFloat aWidth, gfxFloat aHeight) : Super(aWidth, aHeight) {} gfxSizegfxSize23 MOZ_IMPLICIT gfxSize(const mozilla::gfx::IntSize& aSize) : Super(aSize.width, aSize.height) {} 24 }; 25 26 struct gfxPoint : public mozilla::gfx::BasePoint<gfxFloat, gfxPoint> { 27 typedef mozilla::gfx::BasePoint<gfxFloat, gfxPoint> Super; 28 gfxPointgfxPoint29 gfxPoint() : Super() {} gfxPointgfxPoint30 gfxPoint(gfxFloat aX, gfxFloat aY) : Super(aX, aY) {} gfxPointgfxPoint31 MOZ_IMPLICIT gfxPoint(const nsIntPoint& aPoint) : Super(aPoint.x, aPoint.y) {} 32 WithinEpsilonOfgfxPoint33 bool WithinEpsilonOf(const gfxPoint& aPoint, gfxFloat aEpsilon) { 34 return fabs(aPoint.x - x) < aEpsilon && fabs(aPoint.y - y) < aEpsilon; 35 } 36 TransformgfxPoint37 void Transform(const mozilla::gfx::Matrix4x4 &aMatrix) 38 { 39 // Transform this point with aMatrix 40 double px = x; 41 double py = y; 42 43 x = px * aMatrix._11 + py * aMatrix._21 + aMatrix._41; 44 y = px * aMatrix._12 + py * aMatrix._22 + aMatrix._42; 45 46 double w = px * aMatrix._14 + py * aMatrix._24 + aMatrix._44; 47 x /= w; 48 y /= w; 49 } 50 }; 51 52 inline gfxPoint 53 operator*(const gfxPoint& aPoint, const gfxSize& aSize) 54 { 55 return gfxPoint(aPoint.x * aSize.width, aPoint.y * aSize.height); 56 } 57 58 inline gfxPoint 59 operator/(const gfxPoint& aPoint, const gfxSize& aSize) 60 { 61 return gfxPoint(aPoint.x / aSize.width, aPoint.y / aSize.height); 62 } 63 64 inline gfxSize 65 operator/(gfxFloat aValue, const gfxSize& aSize) 66 { 67 return gfxSize(aValue / aSize.width, aValue / aSize.height); 68 } 69 70 #endif /* GFX_POINT_H */ 71