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32 #include "web/WebFontImpl.h"
34 #include "platform/fonts/FontCache.h"
35 #include "platform/fonts/FontDescription.h"
36 #include "platform/graphics/GraphicsContext.h"
37 #include "platform/text/TextRun.h"
38 #include "public/platform/WebFloatPoint.h"
39 #include "public/platform/WebFloatRect.h"
40 #include "public/platform/WebRect.h"
41 #include "public/web/WebFontDescription.h"
42 #include "public/web/WebTextRun.h"
43 #include <skia/ext/platform_canvas.h>
45 using namespace WebCore;
49 WebFont* WebFont::create(const WebFontDescription& desc)
51 return new WebFontImpl(desc);
54 WebFontImpl::WebFontImpl(const FontDescription& desc)
57 m_font.update(nullptr);
60 WebFontDescription WebFontImpl::fontDescription() const
62 return WebFontDescription(m_font.fontDescription());
65 int WebFontImpl::ascent() const
67 return m_font.fontMetrics().ascent();
70 int WebFontImpl::descent() const
72 return m_font.fontMetrics().descent();
75 int WebFontImpl::height() const
77 return m_font.fontMetrics().height();
80 int WebFontImpl::lineSpacing() const
82 return m_font.fontMetrics().lineSpacing();
85 float WebFontImpl::xHeight() const
87 return m_font.fontMetrics().xHeight();
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
94 FontCachePurgePreventer fontCachePurgePreventer;
95 WebCore::FloatRect textClipRect(clip);
97 TextRunPaintInfo runInfo(textRun);
99 runInfo.to = to == -1 ? textRun.length() : to;
100 runInfo.bounds = textClipRect;
101 GraphicsContext gc(canvas);
104 gc.setCertainlyOpaque(canvasIsOpaque);
105 gc.setFillColor(color);
106 gc.clip(textClipRect);
107 m_font.drawText(&gc, runInfo, leftBaseline);
111 int WebFontImpl::calculateWidth(const WebTextRun& run) const
113 FontCachePurgePreventer fontCachePurgePreventer;
114 return m_font.width(run, 0);
117 int WebFontImpl::offsetForPosition(const WebTextRun& run, float position) const
119 FontCachePurgePreventer fontCachePurgePreventer;
120 return m_font.offsetForPosition(run, position, true);
123 WebFloatRect WebFontImpl::selectionRectForText(const WebTextRun& run, const WebFloatPoint& leftBaseline, int height, int from, int to) const
125 FontCachePurgePreventer fontCachePurgePreventer;
126 return m_font.selectionRectForText(run, leftBaseline, height, from, to);