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3b628f7d39
No change in behavior. R=esprehn@chromium.org Review URL: https://codereview.chromium.org/684383002
101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
/*
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* Copyright (C) 2011 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include "config.h"
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#include "core/rendering/RenderCombineText.h"
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#include "core/rendering/TextRunConstructor.h"
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namespace blink {
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RenderCombineText::RenderCombineText(Node* node, PassRefPtr<StringImpl> string)
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: RenderText(node, string)
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, m_combinedTextWidth(0)
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, m_isCombined(false)
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, m_needsFontUpdate(false)
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{
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}
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void RenderCombineText::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
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{
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setStyleInternal(RenderStyle::clone(style()));
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RenderText::styleDidChange(diff, oldStyle);
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if (m_isCombined) {
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RenderText::setTextInternal(originalText()); // This RenderCombineText has been combined once. Restore the original text for the next combineText().
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m_isCombined = false;
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}
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m_needsFontUpdate = true;
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}
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void RenderCombineText::setTextInternal(PassRefPtr<StringImpl> text)
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{
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RenderText::setTextInternal(text);
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m_needsFontUpdate = true;
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}
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float RenderCombineText::width(unsigned from, unsigned length, const Font& font, float xPosition, TextDirection direction, HashSet<const SimpleFontData*>* fallbackFonts, GlyphOverflow* glyphOverflow) const
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{
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if (!length)
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return 0;
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if (hasEmptyText())
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return 0;
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if (m_isCombined)
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return font.fontDescription().computedSize();
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return RenderText::width(from, length, font, xPosition, direction, fallbackFonts, glyphOverflow);
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}
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void RenderCombineText::adjustTextOrigin(FloatPoint& textOrigin, const FloatRect& boxRect) const
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{
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if (m_isCombined)
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textOrigin.move(boxRect.height() / 2 - ceilf(m_combinedTextWidth) / 2, style()->font().fontDescription().computedPixelSize());
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}
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void RenderCombineText::getStringToRender(int start, StringView& string, int& length) const
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{
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ASSERT(start >= 0);
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if (m_isCombined) {
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string = StringView(m_renderingText.impl());
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length = string.length();
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return;
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}
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string = text().createView(start, length);
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}
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void RenderCombineText::combineText()
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{
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if (!m_needsFontUpdate)
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return;
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m_isCombined = false;
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m_needsFontUpdate = false;
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// CSS3 spec says text-combine works only in vertical writing mode.
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// FIXME(sky): Remove
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}
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} // namespace blink
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