15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2011 Apple Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * documentation and/or other materials provided with the distribution. 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef TransformState_h 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define TransformState_h 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 291e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)#include "platform/geometry/FloatPoint.h" 301e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)#include "platform/geometry/FloatQuad.h" 311e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)#include "platform/geometry/IntSize.h" 321e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)#include "platform/geometry/LayoutSize.h" 33bfe3590b1806e3ff18f46ee3af5d4b83078f305aTorne (Richard Coles)#include "platform/transforms/AffineTransform.h" 34bfe3590b1806e3ff18f46ee3af5d4b83078f305aTorne (Richard Coles)#include "platform/transforms/TransformationMatrix.h" 357757ec2eadfa2dd8ac2aeed0a4399e9b07ec38cbBen Murdoch#include "wtf/OwnPtr.h" 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 37c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 39bfe3590b1806e3ff18f46ee3af5d4b83078f305aTorne (Richard Coles)class PLATFORM_EXPORT TransformState { 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) enum TransformDirection { ApplyTransformDirection, UnapplyInverseTransformDirection }; 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) enum TransformAccumulation { FlattenTransform, AccumulateTransform }; 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) TransformState(TransformDirection mappingDirection, const FloatPoint& p, const FloatQuad& quad) 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_lastPlanarPoint(p) 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_lastPlanarQuad(quad) 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_accumulatingTransform(false) 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_mapPoint(true) 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_mapQuad(true) 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_direction(mappingDirection) 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 5302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) TransformState(TransformDirection mappingDirection, const FloatPoint& p) 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_lastPlanarPoint(p) 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_accumulatingTransform(false) 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_mapPoint(true) 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_mapQuad(false) 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_direction(mappingDirection) 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 6202772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) TransformState(TransformDirection mappingDirection, const FloatQuad& quad) 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) : m_lastPlanarQuad(quad) 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_accumulatingTransform(false) 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_mapPoint(false) 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_mapQuad(true) 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) , m_direction(mappingDirection) 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 7102772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) TransformState(const TransformState& other) { *this = other; } 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) TransformState& operator=(const TransformState&); 7502772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 76926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) void setQuad(const FloatQuad& quad) 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 78926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) // FIXME: this assumes that the quad being added is in the coordinate system of the current state. 79926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) // This breaks if we're simultaneously mapping a point. https://bugs.webkit.org/show_bug.cgi?id=106680 80926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) ASSERT(!m_mapPoint); 81926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) m_accumulatedOffset = LayoutSize(); 82926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) m_lastPlanarQuad = quad; 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 84926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 85926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) void move(LayoutUnit x, LayoutUnit y, TransformAccumulation accumulate = FlattenTransform) 86926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) { 87926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) move(LayoutSize(x, y), accumulate); 88926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) } 89926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 90926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) void move(const LayoutSize&, TransformAccumulation = FlattenTransform); 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void applyTransform(const AffineTransform& transformFromContainer, TransformAccumulation = FlattenTransform, bool* wasClamped = 0); 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void applyTransform(const TransformationMatrix& transformFromContainer, TransformAccumulation = FlattenTransform, bool* wasClamped = 0); 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void flatten(bool* wasClamped = 0); 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // Return the coords of the point or quad in the last flattened layer 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) FloatPoint lastPlanarPoint() const { return m_lastPlanarPoint; } 975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) FloatQuad lastPlanarQuad() const { return m_lastPlanarQuad; } 985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // Return the point or quad mapped through the current transform 1005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) FloatPoint mappedPoint(bool* wasClamped = 0) const; 1015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) FloatQuad mappedQuad(bool* wasClamped = 0) const; 1025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 104926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) void translateTransform(const LayoutSize&); 105926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) void translateMappedCoordinates(const LayoutSize&); 1065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void flattenWithTransform(const TransformationMatrix&, bool* wasClamped); 107926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) void applyAccumulatedOffset(); 10802772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 1095c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) FloatPoint m_lastPlanarPoint; 1105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) FloatQuad m_lastPlanarQuad; 1115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // We only allocate the transform if we need to 1135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) OwnPtr<TransformationMatrix> m_accumulatedTransform; 114926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) LayoutSize m_accumulatedOffset; 1155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool m_accumulatingTransform; 1165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool m_mapPoint, m_mapQuad; 1175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) TransformDirection m_direction; 1185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 1195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 120c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} // namespace blink 1215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // TransformState_h 123