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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>
47 WebFont* WebFont::create(const WebFontDescription& desc)
49 return new WebFontImpl(desc);
52 WebFontImpl::WebFontImpl(const FontDescription& desc)
55 m_font.update(nullptr);
58 WebFontDescription WebFontImpl::fontDescription() const
60 return WebFontDescription(m_font.fontDescription());
63 int WebFontImpl::ascent() const
65 return m_font.fontMetrics().ascent();
68 int WebFontImpl::descent() const
70 return m_font.fontMetrics().descent();
73 int WebFontImpl::height() const
75 return m_font.fontMetrics().height();
78 int WebFontImpl::lineSpacing() const
80 return m_font.fontMetrics().lineSpacing();
83 float WebFontImpl::xHeight() const
85 return m_font.fontMetrics().xHeight();
88 void WebFontImpl::drawText(WebCanvas* canvas, const WebTextRun& run, const WebFloatPoint& leftBaseline,
89 WebColor color, const WebRect& clip, bool canvasIsOpaque,
90 int from, int to) const
92 FontCachePurgePreventer fontCachePurgePreventer;
93 FloatRect textClipRect(clip);
95 TextRunPaintInfo runInfo(textRun);
97 runInfo.to = to == -1 ? textRun.length() : to;
98 runInfo.bounds = textClipRect;
99 GraphicsContext gc(canvas);
102 gc.setCertainlyOpaque(canvasIsOpaque);
103 gc.setFillColor(color);
104 gc.clip(textClipRect);
105 m_font.drawText(&gc, runInfo, leftBaseline);
109 int WebFontImpl::calculateWidth(const WebTextRun& run) const
111 FontCachePurgePreventer fontCachePurgePreventer;
112 return m_font.width(run, 0);
115 int WebFontImpl::offsetForPosition(const WebTextRun& run, float position) const
117 FontCachePurgePreventer fontCachePurgePreventer;
118 return m_font.offsetForPosition(run, position, true);
121 WebFloatRect WebFontImpl::selectionRectForText(const WebTextRun& run, const WebFloatPoint& leftBaseline, int height, int from, int to) const
123 FontCachePurgePreventer fontCachePurgePreventer;
124 return m_font.selectionRectForText(run, leftBaseline, height, from, to);