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author | Steve Block <steveblock@google.com> | 2011-05-06 11:45:16 +0100 |
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committer | Steve Block <steveblock@google.com> | 2011-05-12 13:44:10 +0100 |
commit | cad810f21b803229eb11403f9209855525a25d57 (patch) | |
tree | 29a6fd0279be608e0fe9ffe9841f722f0f4e4269 /Source/WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp | |
parent | 121b0cf4517156d0ac5111caf9830c51b69bae8f (diff) | |
download | external_webkit-cad810f21b803229eb11403f9209855525a25d57.zip external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.gz external_webkit-cad810f21b803229eb11403f9209855525a25d57.tar.bz2 |
Merge WebKit at r75315: Initial merge by git.
Change-Id: I570314b346ce101c935ed22a626b48c2af266b84
Diffstat (limited to 'Source/WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp')
-rw-r--r-- | Source/WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp b/Source/WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp new file mode 100644 index 0000000..62ea060 --- /dev/null +++ b/Source/WebCore/platform/graphics/win/SimpleFontDataCairoWin.cpp @@ -0,0 +1,130 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "SimpleFontData.h" + +#include <windows.h> + +#include "Font.h" +#include "FontCache.h" +#include "FontDescription.h" +#include <cairo.h> +#include <cairo-win32.h> +#include <mlang.h> +#include <tchar.h> +#include <wtf/MathExtras.h> + +namespace WebCore { + +void SimpleFontData::platformInit() +{ + m_scriptCache = 0; + m_scriptFontProperties = 0; + m_isSystemFont = false; + + m_syntheticBoldOffset = m_platformData.syntheticBold() ? 1.0f : 0.f; + + if (m_platformData.useGDI()) + return initGDIFont(); + + HDC hdc = GetDC(0); + SaveDC(hdc); + + cairo_scaled_font_t* scaledFont = m_platformData.scaledFont(); + const double metricsMultiplier = cairo_win32_scaled_font_get_metrics_factor(scaledFont) * m_platformData.size(); + + cairo_win32_scaled_font_select_font(scaledFont, hdc); + + TEXTMETRIC textMetrics; + GetTextMetrics(hdc, &textMetrics); + m_ascent = lroundf(textMetrics.tmAscent * metricsMultiplier); + m_descent = lroundf(textMetrics.tmDescent * metricsMultiplier); + m_xHeight = m_ascent * 0.56f; // Best guess for xHeight for non-Truetype fonts. + m_lineGap = lroundf(textMetrics.tmExternalLeading * metricsMultiplier); + m_lineSpacing = m_ascent + m_descent + m_lineGap; + m_avgCharWidth = lroundf(textMetrics.tmAveCharWidth * metricsMultiplier); + m_maxCharWidth = lroundf(textMetrics.tmMaxCharWidth * metricsMultiplier); + + OUTLINETEXTMETRIC metrics; + if (GetOutlineTextMetrics(hdc, sizeof(metrics), &metrics) > 0) { + // This is a TrueType font. We might be able to get an accurate xHeight + GLYPHMETRICS gm; + MAT2 mat = { 1, 0, 0, 1 }; + DWORD len = GetGlyphOutline(hdc, 'x', GGO_METRICS, &gm, 0, 0, &mat); + if (len != GDI_ERROR && gm.gmptGlyphOrigin.y > 0) + m_xHeight = gm.gmptGlyphOrigin.y * metricsMultiplier; + } + + cairo_win32_scaled_font_done_font(scaledFont); + + m_isSystemFont = false; + m_scriptCache = 0; + m_scriptFontProperties = 0; + + RestoreDC(hdc, -1); + ReleaseDC(0, hdc); +} + +void SimpleFontData::platformCharWidthInit() +{ + // charwidths are set in platformInit. +} + +FloatRect SimpleFontData::platformBoundsForGlyph(Glyph glyph) const +{ + if (m_platformData.useGDI()) + return boundsForGDIGlyph(glyph); + //FIXME: Implement this + return FloatRect(); +} + +float SimpleFontData::platformWidthForGlyph(Glyph glyph) const +{ + if (m_platformData.useGDI()) + return widthForGDIGlyph(glyph); + + HDC hdc = GetDC(0); + SaveDC(hdc); + + cairo_scaled_font_t* scaledFont = m_platformData.scaledFont(); + cairo_win32_scaled_font_select_font(scaledFont, hdc); + + int width; + GetCharWidthI(hdc, glyph, 1, 0, &width); + + cairo_win32_scaled_font_done_font(scaledFont); + + RestoreDC(hdc, -1); + ReleaseDC(0, hdc); + + const double metricsMultiplier = cairo_win32_scaled_font_get_metrics_factor(scaledFont) * m_platformData.size(); + return width * metricsMultiplier; +} + +} |