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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:52 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:52 -0800 |
commit | 8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2 (patch) | |
tree | 11425ea0b299d6fb89c6d3618a22d97d5bf68d0f /WebCore/platform/graphics/gtk/GlyphPageTreeNodePango.cpp | |
parent | 648161bb0edfc3d43db63caed5cc5213bc6cb78f (diff) | |
download | external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.zip external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.tar.gz external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'WebCore/platform/graphics/gtk/GlyphPageTreeNodePango.cpp')
-rw-r--r-- | WebCore/platform/graphics/gtk/GlyphPageTreeNodePango.cpp | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/gtk/GlyphPageTreeNodePango.cpp b/WebCore/platform/graphics/gtk/GlyphPageTreeNodePango.cpp new file mode 100644 index 0000000..8fada5c --- /dev/null +++ b/WebCore/platform/graphics/gtk/GlyphPageTreeNodePango.cpp @@ -0,0 +1,98 @@ +/* + * Copyright (C) 2006, 2007 Apple Inc. All rights reserved. + * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com + * Copyright (C) 2007 Alp Toker <alp.toker@collabora.co.uk> + * Copyright (C) 2007 Pioneer Research Center USA, Inc. + * + * 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 "GlyphPageTreeNode.h" + +#include "SimpleFontData.h" +#include <pango/pango-font.h> + +namespace WebCore { + +static PangoGlyph pango_font_get_glyph(PangoFont* font, PangoContext* context, gunichar wc) +{ + PangoGlyph result = 0; + gchar buffer[7]; + + gint length = g_unichar_to_utf8(wc, buffer); + g_return_val_if_fail(length, 0); + + GList* items = pango_itemize(context, buffer, 0, length, NULL, NULL); + + if (g_list_length(items) == 1) { + PangoItem* item = reinterpret_cast<PangoItem*>(items->data); + PangoFont* tmpFont = item->analysis.font; + item->analysis.font = font; + + PangoGlyphString* glyphs = pango_glyph_string_new(); + pango_shape(buffer, length, &item->analysis, glyphs); + + item->analysis.font = tmpFont; + + if (glyphs->num_glyphs == 1) + result = glyphs->glyphs[0].glyph; + else + g_warning("didn't get 1 glyph but %d", glyphs->num_glyphs); + + pango_glyph_string_free(glyphs); + } + + g_list_foreach(items, (GFunc)pango_item_free, NULL); + g_list_free(items); + + return result; +} + +bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData) +{ + // The bufferLength will be greater than the glyph page size if the buffer has Unicode supplementary characters. + // We won't support this for now. + if (bufferLength > GlyphPage::size) + return false; + + if (!fontData->m_font.m_font || fontData->m_font.m_font == reinterpret_cast<PangoFont*>(-1)) + return false; + + bool haveGlyphs = false; + for (unsigned i = 0; i < length; i++) { + Glyph glyph = pango_font_get_glyph(fontData->m_font.m_font, fontData->m_font.m_context, buffer[i]); + if (!glyph) + setGlyphDataForIndex(offset + i, 0, 0); + else { + setGlyphDataForIndex(offset + i, glyph, fontData); + haveGlyphs = true; + } + } + + return haveGlyphs; +} + +} |