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/*
* Copyright (C) 2006 Apple Inc. All rights reserved.
* Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
* Copyright (C) 2007, 2008 Alp Toker <alp@atoker.com>
* Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
* Copyright (C) 2010 Holger Hans Peter Freyther
* Copyright (C) 2014 Igalia S.L.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* 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 "FontCascade.h"
#if USE(CAIRO)
#include "AffineTransform.h"
#include "CairoOperations.h"
#include "CairoUtilities.h"
#include "Font.h"
#include "GlyphBuffer.h"
#include "Gradient.h"
#include "GraphicsContext.h"
#include "ImageBuffer.h"
#include "Pattern.h"
#include "RefPtrCairo.h"
#include "ShadowBlur.h"
namespace WebCore {
void FontCascade::drawGlyphs(GraphicsContext& context, const Font& font, const GlyphBufferGlyph* glyphs,
const GlyphBufferAdvance* advances, unsigned numGlyphs, const FloatPoint& point,
FontSmoothingMode fontSmoothingMode)
{
if (!font.platformData().size())
return;
auto xOffset = point.x();
Vector<cairo_glyph_t> cairoGlyphs(numGlyphs);
{
auto yOffset = point.y();
for (size_t i = 0; i < numGlyphs; ++i) {
cairoGlyphs[i] = { glyphs[i], xOffset, yOffset };
xOffset += advances[i].width();
yOffset += advances[i].height();
}
}
cairo_scaled_font_t* scaledFont = font.platformData().scaledFont();
double syntheticBoldOffset = font.syntheticBoldOffset();
ASSERT(context.hasPlatformContext());
auto& state = context.state();
Cairo::drawGlyphs(*context.platformContext(), Cairo::FillSource(state), Cairo::StrokeSource(state),
Cairo::ShadowState(state), point, scaledFont, syntheticBoldOffset, cairoGlyphs, xOffset,
state.textDrawingMode(), state.strokeThickness(), state.dropShadow().offset, state.dropShadow().color,
fontSmoothingMode);
}
Path Font::platformPathForGlyph(Glyph glyph) const
{
RefPtr<cairo_t> cr = adoptRef(cairo_create(adoptRef(cairo_image_surface_create(CAIRO_FORMAT_A8, 1, 1)).get()));
cairo_glyph_t cairoGlyph = { glyph, 0, 0 };
cairo_set_scaled_font(cr.get(), platformData().scaledFont());
cairo_glyph_path(cr.get(), &cairoGlyph, 1);
float syntheticBoldOffset = this->syntheticBoldOffset();
if (syntheticBoldOffset) {
cairo_translate(cr.get(), syntheticBoldOffset, 0);
cairo_glyph_path(cr.get(), &cairoGlyph, 1);
}
return Path(WTFMove(cr));
}
FloatRect Font::platformBoundsForGlyph(Glyph glyph) const
{
if (!m_platformData.size())
return FloatRect();
cairo_glyph_t cglyph = { glyph, 0, 0 };
cairo_text_extents_t extents;
cairo_scaled_font_glyph_extents(m_platformData.scaledFont(), &cglyph, 1, &extents);
if (cairo_scaled_font_status(m_platformData.scaledFont()) == CAIRO_STATUS_SUCCESS)
return FloatRect(extents.x_bearing, extents.y_bearing, extents.width, extents.height);
return FloatRect();
}
float Font::platformWidthForGlyph(Glyph glyph) const
{
if (!m_platformData.size())
return 0;
if (cairo_scaled_font_status(m_platformData.scaledFont()) != CAIRO_STATUS_SUCCESS)
return m_spaceWidth;
cairo_glyph_t cairoGlyph = { glyph, 0, 0 };
cairo_text_extents_t extents;
cairo_scaled_font_glyph_extents(m_platformData.scaledFont(), &cairoGlyph, 1, &extents);
float width = platformData().orientation() == FontOrientation::Horizontal ? extents.x_advance : -extents.y_advance;
return width ? width : m_spaceWidth;
}
} // namespace WebCore
#endif // USE(CAIRO)
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