18e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 28e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright (C) 2007 Apple Inc. All rights reserved. 38e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 48e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Redistribution and use in source and binary forms, with or without 58e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * modification, are permitted provided that the following conditions 68e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * are met: 78e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 88e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer. 98e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * documentation and/or other materials provided with the distribution. 128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "config.h" 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "WebCoreTextRenderer.h" 278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "Font.h" 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "FontDescription.h" 308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "GraphicsContext.h" 318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "StringTruncator.h" 32ab9e7a118cf1ea2e3a93dce683b2ded3e7291ddbBen Murdoch#include "TextRun.h" 338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include <wtf/unicode/Unicode.h> 348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstatic bool shouldUseFontSmoothing = true; 388e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstatic bool isOneLeftToRightRun(const TextRun& run) 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project for (int i = 0; i < run.length(); i++) { 428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project WTF::Unicode::Direction direction = WTF::Unicode::direction(run[i]); 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (direction == WTF::Unicode::RightToLeft || direction > WTF::Unicode::OtherNeutral) 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return false; 458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return true; 478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstatic void doDrawTextAtPoint(GraphicsContext& context, const String& text, const IntPoint& point, const Font& font, const Color& color, int underlinedIndex) 508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project TextRun run(text.characters(), text.length()); 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 53a94275402997c11dd2e778633dacf4b7e630a35dBen Murdoch context.setFillColor(color, ColorSpaceDeviceRGB); 548e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (isOneLeftToRightRun(run)) 558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project font.drawText(&context, run, point); 56635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project else 57635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project context.drawBidiText(font, run, point); 588e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (underlinedIndex >= 0) { 608e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ASSERT(underlinedIndex < static_cast<int>(text.length())); 618e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 628e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project int beforeWidth; 638e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (underlinedIndex > 0) { 648e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project TextRun beforeRun(text.characters(), underlinedIndex); 658e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project beforeWidth = font.width(beforeRun); 668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } else 678e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project beforeWidth = 0; 688e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 698e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project TextRun underlinedRun(text.characters() + underlinedIndex, 1); 708e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project int underlinedWidth = font.width(underlinedRun); 718e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 728e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project IntPoint underlinePoint(point); 738e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project underlinePoint.move(beforeWidth, 1); 748e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 75a94275402997c11dd2e778633dacf4b7e630a35dBen Murdoch context.setStrokeColor(color, ColorSpaceDeviceRGB); 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project context.drawLineForText(underlinePoint, underlinedWidth, false); 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 808e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid WebCoreDrawTextAtPoint(GraphicsContext& context, const String& text, const IntPoint& point, const Font& font, const Color& color, int underlinedIndex) 818e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project context.save(); 838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 848e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project doDrawTextAtPoint(context, text, point, font, color, underlinedIndex); 858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project context.restore(); 878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 888e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid WebCoreDrawDoubledTextAtPoint(GraphicsContext& context, const String& text, const IntPoint& point, const Font& font, const Color& topColor, const Color& bottomColor, int underlinedIndex) 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project context.save(); 928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project IntPoint textPos = point; 948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project doDrawTextAtPoint(context, text, textPos, font, bottomColor, underlinedIndex); 968e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project textPos.move(0, -1); 978e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project doDrawTextAtPoint(context, text, textPos, font, topColor, underlinedIndex); 988e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 998e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project context.restore(); 1008e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1018e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1028e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectfloat WebCoreTextFloatWidth(const String& text, const Font& font) 1038e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 10481bc750723a18f21cd17d1b173cd2a4dda9cea6eBen Murdoch return StringTruncator::width(text, font); 1058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid WebCoreSetShouldUseFontSmoothing(bool smooth) 1088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 1098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project shouldUseFontSmoothing = smooth; 1108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectbool WebCoreShouldUseFontSmoothing() 1138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 1148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return shouldUseFontSmoothing; 1158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid WebCoreSetAlwaysUsesComplexTextCodePath(bool complex) 1188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 1198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project Font::setCodePath(complex ? Font::Complex : Font::Auto); 1208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectbool WebCoreAlwaysUsesComplexTextCodePath() 1238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 1248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return Font::codePath() == Font::Complex; 1258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} // namespace WebCore 128