Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 Google Inc. All rights reserved. |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions are |
| 6 | * met: |
| 7 | * |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above |
| 11 | * copyright notice, this list of conditions and the following disclaimer |
| 12 | * in the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * * Neither the name of Google Inc. nor the names of its |
| 15 | * contributors may be used to endorse or promote products derived from |
| 16 | * this software without specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 21 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 22 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 23 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 24 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include "config.h" |
| 32 | #include "WebFontImpl.h" |
| 33 | |
| 34 | #include <skia/ext/platform_canvas.h> |
| 35 | #include "WebFontDescription.h" |
| 36 | #include "WebTextRun.h" |
Torne (Richard Coles) | a854de0 | 2013-12-18 16:25:25 +0000 | [diff] [blame] | 37 | #include "platform/fonts/FontCache.h" |
Torne (Richard Coles) | f79f16f | 2013-10-31 11:16:44 +0000 | [diff] [blame] | 38 | #include "platform/fonts/FontDescription.h" |
Torne (Richard Coles) | a854de0 | 2013-12-18 16:25:25 +0000 | [diff] [blame] | 39 | #include "platform/graphics/GraphicsContext.h" |
| 40 | #include "platform/text/TextRun.h" |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 41 | #include "public/platform/WebFloatPoint.h" |
| 42 | #include "public/platform/WebFloatRect.h" |
| 43 | #include "public/platform/WebRect.h" |
| 44 | |
| 45 | using namespace WebCore; |
| 46 | |
Torne (Richard Coles) | 51b2906 | 2013-11-28 11:56:03 +0000 | [diff] [blame] | 47 | namespace blink { |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 48 | |
| 49 | WebFont* WebFont::create(const WebFontDescription& desc) |
| 50 | { |
Torne (Richard Coles) | 0938029 | 2014-02-21 12:17:33 +0000 | [diff] [blame] | 51 | return new WebFontImpl(desc); |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 52 | } |
| 53 | |
Torne (Richard Coles) | 0938029 | 2014-02-21 12:17:33 +0000 | [diff] [blame] | 54 | WebFontImpl::WebFontImpl(const FontDescription& desc) |
| 55 | : m_font(desc) |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 56 | { |
Torne (Richard Coles) | d5428f3 | 2014-03-18 10:21:16 +0000 | [diff] [blame] | 57 | m_font.update(nullptr); |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | WebFontDescription WebFontImpl::fontDescription() const |
| 61 | { |
Torne (Richard Coles) | 0938029 | 2014-02-21 12:17:33 +0000 | [diff] [blame] | 62 | return WebFontDescription(m_font.fontDescription()); |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 63 | } |
| 64 | |
| 65 | int WebFontImpl::ascent() const |
| 66 | { |
| 67 | return m_font.fontMetrics().ascent(); |
| 68 | } |
| 69 | |
| 70 | int WebFontImpl::descent() const |
| 71 | { |
| 72 | return m_font.fontMetrics().descent(); |
| 73 | } |
| 74 | |
| 75 | int WebFontImpl::height() const |
| 76 | { |
| 77 | return m_font.fontMetrics().height(); |
| 78 | } |
| 79 | |
| 80 | int WebFontImpl::lineSpacing() const |
| 81 | { |
| 82 | return m_font.fontMetrics().lineSpacing(); |
| 83 | } |
| 84 | |
| 85 | float WebFontImpl::xHeight() const |
| 86 | { |
| 87 | return m_font.fontMetrics().xHeight(); |
| 88 | } |
| 89 | |
| 90 | void WebFontImpl::drawText(WebCanvas* canvas, const WebTextRun& run, const WebFloatPoint& leftBaseline, |
| 91 | WebColor color, const WebRect& clip, bool canvasIsOpaque, |
| 92 | int from, int to) const |
| 93 | { |
| 94 | FontCachePurgePreventer fontCachePurgePreventer; |
| 95 | WebCore::FloatRect textClipRect(clip); |
| 96 | TextRun textRun(run); |
| 97 | TextRunPaintInfo runInfo(textRun); |
| 98 | runInfo.from = from; |
| 99 | runInfo.to = to == -1 ? textRun.length() : to; |
| 100 | runInfo.bounds = textClipRect; |
| 101 | GraphicsContext gc(canvas); |
| 102 | |
| 103 | gc.save(); |
| 104 | gc.setCertainlyOpaque(canvasIsOpaque); |
| 105 | gc.setFillColor(color); |
| 106 | gc.clip(textClipRect); |
| 107 | m_font.drawText(&gc, runInfo, leftBaseline); |
| 108 | gc.restore(); |
Ben Murdoch | e69819b | 2013-07-17 14:56:49 +0100 | [diff] [blame] | 109 | } |
| 110 | |
| 111 | int WebFontImpl::calculateWidth(const WebTextRun& run) const |
| 112 | { |
| 113 | FontCachePurgePreventer fontCachePurgePreventer; |
| 114 | return m_font.width(run, 0); |
| 115 | } |
| 116 | |
| 117 | int WebFontImpl::offsetForPosition(const WebTextRun& run, float position) const |
| 118 | { |
| 119 | FontCachePurgePreventer fontCachePurgePreventer; |
| 120 | return m_font.offsetForPosition(run, position, true); |
| 121 | } |
| 122 | |
| 123 | WebFloatRect WebFontImpl::selectionRectForText(const WebTextRun& run, const WebFloatPoint& leftBaseline, int height, int from, int to) const |
| 124 | { |
| 125 | FontCachePurgePreventer fontCachePurgePreventer; |
| 126 | return m_font.selectionRectForText(run, leftBaseline, height, from, to); |
| 127 | } |
| 128 | |
Torne (Richard Coles) | 51b2906 | 2013-11-28 11:56:03 +0000 | [diff] [blame] | 129 | } // namespace blink |