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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/graphics/paint/DrawingRecorder.h"
38 #include "platform/graphics/paint/SkPictureBuilder.h"
39 #include "platform/text/TextRun.h"
40 #include "public/platform/WebFloatPoint.h"
41 #include "public/platform/WebFloatRect.h"
42 #include "public/platform/WebRect.h"
43 #include "public/web/WebFontDescription.h"
44 #include "public/web/WebTextRun.h"
48 WebFont
* WebFont::create(const WebFontDescription
& desc
)
50 return new WebFontImpl(desc
);
53 WebFontImpl::WebFontImpl(const FontDescription
& desc
)
56 m_font
.update(nullptr);
59 WebFontDescription
WebFontImpl::fontDescription() const
61 return WebFontDescription(m_font
.fontDescription());
64 int WebFontImpl::ascent() const
66 return m_font
.fontMetrics().ascent();
69 int WebFontImpl::descent() const
71 return m_font
.fontMetrics().descent();
74 int WebFontImpl::height() const
76 return m_font
.fontMetrics().height();
79 int WebFontImpl::lineSpacing() const
81 return m_font
.fontMetrics().lineSpacing();
84 float WebFontImpl::xHeight() const
86 return m_font
.fontMetrics().xHeight();
89 void WebFontImpl::drawText(WebCanvas
* canvas
, const WebTextRun
& run
, const WebFloatPoint
& leftBaseline
,
90 WebColor color
, const WebRect
& clip
) const
92 FontCachePurgePreventer fontCachePurgePreventer
;
93 FloatRect
textClipRect(clip
);
95 TextRunPaintInfo
runInfo(textRun
);
96 runInfo
.bounds
= textClipRect
;
98 IntRect
intRect(clip
);
99 SkPictureBuilder
pictureBuilder(intRect
);
100 GraphicsContext
* context
= &pictureBuilder
.context();
102 ASSERT(!DrawingRecorder::useCachedDrawingIfPossible(*context
, *this, DisplayItem::WebFont
));
104 DrawingRecorder
drawingRecorder(*context
, *this, DisplayItem::WebFont
, intRect
);
106 context
->setFillColor(color
);
107 context
->clip(textClipRect
);
108 context
->drawText(m_font
, runInfo
, leftBaseline
);
112 pictureBuilder
.endRecording()->playback(canvas
);
115 int WebFontImpl::calculateWidth(const WebTextRun
& run
) const
117 return m_font
.width(run
, 0);
120 int WebFontImpl::offsetForPosition(const WebTextRun
& run
, float position
) const
122 return m_font
.offsetForPosition(run
, position
, true);
125 WebFloatRect
WebFontImpl::selectionRectForText(const WebTextRun
& run
, const WebFloatPoint
& leftBaseline
, int height
, int from
, int to
) const
127 return m_font
.selectionRectForText(run
, leftBaseline
, height
, from
, to
);