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+///*
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+// * This source file is part of libRocket, the HTML/CSS Interface Middleware
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+// *
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+// * For the latest information, see http://www.librocket.com
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+// *
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+// * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
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+// *
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+// * Permission is hereby granted, free of charge, to any person obtaining a copy
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+// * of this software and associated documentation files (the "Software"), to deal
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+// * in the Software without restriction, including without limitation the rights
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+// * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+// * copies of the Software, and to permit persons to whom the Software is
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+// * furnished to do so, subject to the following conditions:
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+// *
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+// * The above copyright notice and this permission notice shall be included in
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+// * all copies or substantial portions of the Software.
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+// *
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+// * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+// * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+// * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+// * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+// * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+// * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+// * THE SOFTWARE.
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+// *
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+// */
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+
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+//#include "precompiled.h"
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+//#include "FontFaceHandle.h"
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+//#include <algorithm>
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+//#include "../../Include/Rocket/Core.h"
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+//#include "FontFaceLayer.h"
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+//#include "TextureLayout.h"
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+
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+//namespace Rocket {
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+//namespace Core {
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+
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+//class FontEffectSort
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+//{
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+//public:
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+// bool operator()(const FontEffect* lhs, const FontEffect* rhs)
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+// {
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+// return lhs->GetZIndex() < rhs->GetZIndex();
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+// }
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+//};
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+
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+//FontFaceHandle::FontFaceHandle()
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+//{
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+// size = 0;
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+// average_advance = 0;
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+// x_height = 0;
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+// line_height = 0;
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+// baseline = 0;
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+
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+// underline_position = 0;
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+// underline_thickness = 0;
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+
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+// ft_face = NULL;
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+
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+// base_layer = NULL;
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+//}
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+
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+//FontFaceHandle::~FontFaceHandle()
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+//{
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+// for (FontGlyphList::iterator i = glyphs.begin(); i != glyphs.end(); ++i)
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+// delete[] i->bitmap_data;
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+
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+// for (FontLayerMap::iterator i = layers.begin(); i != layers.end(); ++i)
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+// delete i->second;
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+//}
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+
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+//// Initialises the handle so it is able to render text.
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+//bool FontFaceHandle::Initialise(FT_Face ft_face, const String& _charset, int _size)
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+//{
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+// size = _size;
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+
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+// raw_charset = _charset;
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+// if (!UnicodeRange::BuildList(charset, raw_charset))
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+// {
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+// Log::Message(Log::LT_ERROR, "Invalid font charset '%s'.", raw_charset.CString());
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+// return false;
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+// }
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+
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+// // Set the character size on the font face.
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+// FT_Error error = FT_Set_Char_Size(ft_face, 0, size << 6, 0, 0);
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+// if (error != 0)
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+// {
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+// Log::Message(Log::LT_ERROR, "Unable to set the character size '%d' on the font face '%s %s'.", size, ft_face->family_name, ft_face->style_name);
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+// return false;
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+// }
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+
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+// this->ft_face = ft_face;
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+
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+// // find the maximum character we are interested in
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+// max_codepoint = 0;
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+// for (size_t i = 0; i < charset.size(); ++i)
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+// max_codepoint = Math::Max(max_codepoint, charset[i].max_codepoint);
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+
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+// // Construct the list of the characters specified by the charset.
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+// glyphs.resize(max_codepoint+1, FontGlyph());
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+// for (size_t i = 0; i < charset.size(); ++i)
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+// BuildGlyphMap(charset[i]);
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+
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+// // Generate the metrics for the handle.
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+// GenerateMetrics();
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+
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+// // Generate the default layer and layer configuration.
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+// base_layer = GenerateLayer(NULL);
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+// layer_configurations.push_back(LayerConfiguration());
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+// layer_configurations.back().push_back(base_layer);
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+
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+
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+// return true;
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+//}
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+
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+//// Returns the point size of this font face.
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+//int FontFaceHandle::GetSize() const
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+//{
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+// return size;
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+//}
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+
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+//// Returns the average advance of all glyphs in this font face.
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+//int FontFaceHandle::GetCharacterWidth() const
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+//{
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+// return average_advance;
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+//}
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+
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+//// Returns the pixel height of a lower-case x in this font face.
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+//int FontFaceHandle::GetXHeight() const
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+//{
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+// return x_height;
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+//}
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+
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+//// Returns the default height between this font face's baselines.
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+//int FontFaceHandle::GetLineHeight() const
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+//{
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+// return line_height;
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+//}
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+
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+//// Returns the font's baseline.
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+//int FontFaceHandle::GetBaseline() const
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+//{
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+// return baseline;
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+//}
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+
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+//// Returns the font's glyphs.
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+//const FontGlyphList& FontFaceHandle::GetGlyphs() const
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+//{
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+// return glyphs;
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+//}
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+
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+//// Returns the width a string will take up if rendered with this handle.
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+//int FontFaceHandle::GetStringWidth(const WString& string, word prior_character) const
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+//{
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+// int width = 0;
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+
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+// for (size_t i = 0; i < string.Length(); i++)
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+// {
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+// word character_code = string[i];
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+
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+// if (character_code >= glyphs.size())
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+// continue;
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+// const FontGlyph &glyph = glyphs[character_code];
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+
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+// // Adjust the cursor for the kerning between this character and the previous one.
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+// if (prior_character != 0)
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+// width += GetKerning(prior_character, string[i]);
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+// // Adjust the cursor for this character's advance.
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+// width += glyph.advance;
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+
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+// prior_character = character_code;
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+// }
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+
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+// return width;
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+//}
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+
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+//// Generates, if required, the layer configuration for a given array of font effects.
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+//int FontFaceHandle::GenerateLayerConfiguration(FontEffectMap& font_effects)
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+//{
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+// if (font_effects.empty())
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+// return 0;
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+
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+// // Prepare a list of effects, sorted by z-index.
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+// FontEffectList sorted_effects;
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+// for (FontEffectMap::const_iterator i = font_effects.begin(); i != font_effects.end(); ++i)
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+// sorted_effects.push_back(i->second);
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+
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+// std::sort(sorted_effects.begin(), sorted_effects.end(), FontEffectSort());
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+
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+// // Check each existing configuration for a match with this arrangement of effects.
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+// int configuration_index = 1;
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+// for (; configuration_index < (int) layer_configurations.size(); ++configuration_index)
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+// {
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+// const LayerConfiguration& configuration = layer_configurations[configuration_index];
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+
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+// // Check the size is correct. For a math, there should be one layer in the configuration
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+// // plus an extra for the base layer.
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+// if (configuration.size() != sorted_effects.size() + 1)
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+// continue;
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+
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+// // Check through each layer, checking it was created by the same effect as the one we're
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+// // checking.
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+// size_t effect_index = 0;
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+// for (size_t i = 0; i < configuration.size(); ++i)
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+// {
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+// // Skip the base layer ...
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+// if (configuration[i]->GetFontEffect() == NULL)
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+// continue;
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+
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+// // If the ith layer's effect doesn't match the equivalent effect, then this
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+// // configuration can't match.
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+// if (configuration[i]->GetFontEffect() != sorted_effects[effect_index])
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+// break;
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+
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+// // Check the next one ...
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+// ++effect_index;
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+// }
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+
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+// if (effect_index == sorted_effects.size())
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+// return configuration_index;
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+// }
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+
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+// // No match, so we have to generate a new layer configuration.
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+// layer_configurations.push_back(LayerConfiguration());
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+// LayerConfiguration& layer_configuration = layer_configurations.back();
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+
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+// bool added_base_layer = false;
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+
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+// for (size_t i = 0; i < sorted_effects.size(); ++i)
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+// {
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+// if (!added_base_layer &&
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+// sorted_effects[i]->GetZIndex() >= 0)
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+// {
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+// layer_configuration.push_back(base_layer);
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+// added_base_layer = true;
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+// }
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+
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+// layer_configuration.push_back(GenerateLayer(sorted_effects[i]));
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+// }
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+
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+// // Add the base layer now if we still haven't added it.
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+// if (!added_base_layer)
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+// layer_configuration.push_back(base_layer);
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+
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+// return (int) (layer_configurations.size() - 1);
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+//}
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+
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+//// Generates the texture data for a layer (for the texture database).
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+//bool FontFaceHandle::GenerateLayerTexture(const byte*& texture_data, Vector2i& texture_dimensions, FontEffect* layer_id, int texture_id)
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+//{
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+// FontLayerMap::iterator layer_iterator = layers.find(layer_id);
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+// if (layer_iterator == layers.end())
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+// return false;
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+
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+// return layer_iterator->second->GenerateTexture(texture_data, texture_dimensions, texture_id);
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+//}
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+
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+//// Generates the geometry required to render a single line of text.
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+//int FontFaceHandle::GenerateString(GeometryList& geometry, const WString& string, const Vector2f& position, const Colourb& colour, int layer_configuration_index) const
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+//{
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+// int geometry_index = 0;
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+// int line_width = 0;
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+
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+// ROCKET_ASSERT(layer_configuration_index >= 0);
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+// ROCKET_ASSERT(layer_configuration_index < (int) layer_configurations.size());
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+
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+// // Fetch the requested configuration and generate the geometry for each one.
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+// const LayerConfiguration& layer_configuration = layer_configurations[layer_configuration_index];
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+// for (size_t i = 0; i < layer_configuration.size(); ++i)
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+// {
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+// FontFaceLayer* layer = layer_configuration[i];
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+
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+// Colourb layer_colour;
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+// if (layer == base_layer)
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+// layer_colour = colour;
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+// else
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+// layer_colour = layer->GetColour();
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+
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+// // Resize the geometry list if required.
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+// if ((int) geometry.size() < geometry_index + layer->GetNumTextures())
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+// geometry.resize(geometry_index + layer->GetNumTextures());
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+
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+// // Bind the textures to the geometries.
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+// for (int i = 0; i < layer->GetNumTextures(); ++i)
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+// geometry[geometry_index + i].SetTexture(layer->GetTexture(i));
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+
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+// line_width = 0;
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+// word prior_character = 0;
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+
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+// const word* string_iterator = string.CString();
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+// const word* string_end = string.CString() + string.Length();
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+
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+// for (; string_iterator != string_end; string_iterator++)
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+// {
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+// if (*string_iterator >= glyphs.size())
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+// continue;
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+// const FontGlyph &glyph = glyphs[*string_iterator];
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+
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+// // Adjust the cursor for the kerning between this character and the previous one.
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+// if (prior_character != 0)
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+// line_width += GetKerning(prior_character, *string_iterator);
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+
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+// layer->GenerateGeometry(&geometry[geometry_index], *string_iterator, Vector2f(position.x + line_width, position.y), layer_colour);
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+
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+// line_width += glyph.advance;
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+// prior_character = *string_iterator;
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+// }
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+
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+// geometry_index += layer->GetNumTextures();
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+// }
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+
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+// // Cull any excess geometry from a previous generation.
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+// geometry.resize(geometry_index);
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+
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+// return line_width;
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+//}
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+
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+//// Generates the geometry required to render a line above, below or through a line of text.
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+//void FontFaceHandle::GenerateLine(Geometry* geometry, const Vector2f& position, int width, Font::Line height, const Colourb& colour) const
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+//{
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+// std::vector< Vertex >& line_vertices = geometry->GetVertices();
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+// std::vector< int >& line_indices = geometry->GetIndices();
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+
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+// float offset;
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+// switch (height)
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+// {
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+// case Font::UNDERLINE: offset = -underline_position; break;
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+// case Font::OVERLINE: // where to place? offset = -line_height - underline_position; break;
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+// case Font::STRIKE_THROUGH: // where to place? offset = -line_height * 0.5f; break;
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+// default: return;
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+// }
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+
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+// line_vertices.resize(line_vertices.size() + 4);
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+// line_indices.resize(line_indices.size() + 6);
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+// GeometryUtilities::GenerateQuad(&line_vertices[0] + (line_vertices.size() - 4), &line_indices[0] + (line_indices.size() - 6), Vector2f(position.x, position.y + offset), Vector2f((float) width, underline_thickness), colour, (int)line_vertices.size() - 4);
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+//}
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+
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+//// Returns the font face's raw charset (the charset range as a string).
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+//const String& FontFaceHandle::GetRawCharset() const
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+//{
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+// return raw_charset;
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+//}
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+
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+//// Returns the font face's charset.
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+//const UnicodeRangeList& FontFaceHandle::GetCharset() const
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+//{
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+// return charset;
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+//}
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+
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+//// Destroys the handle.
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+//void FontFaceHandle::OnReferenceDeactivate()
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+//{
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+// delete this;
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+//}
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+
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+//void FontFaceHandle::GenerateMetrics()
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+//{
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+// line_height = ft_face->size->metrics.height >> 6;
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+// baseline = line_height - (ft_face->size->metrics.ascender >> 6);
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+
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+// underline_position = FT_MulFix(ft_face->underline_position, ft_face->size->metrics.y_scale) / float(1 << 6);
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+// underline_thickness = FT_MulFix(ft_face->underline_thickness, ft_face->size->metrics.y_scale) / float(1 << 6);
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+// underline_thickness = Math::Max(underline_thickness, 1.0f);
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+
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+// average_advance = 0;
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+// unsigned int num_visible_glyphs = 0;
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+// for (FontGlyphList::iterator i = glyphs.begin(); i != glyphs.end(); ++i)
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+// {
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+// if (i->advance)
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+// {
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+// average_advance += i->advance;
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+// num_visible_glyphs++;
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+// }
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+// }
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+
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+// // Bring the total advance down to the average advance, but scaled up 10%, just to be on the safe side.
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+// if (num_visible_glyphs)
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+// average_advance = Math::RealToInteger((float) average_advance / (num_visible_glyphs * 0.9f));
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+
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+// // Determine the x-height of this font face.
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+// word x = (word) 'x';
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+// int index = FT_Get_Char_Index(ft_face, x);
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+// if (FT_Load_Glyph(ft_face, index, 0) == 0)
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+// x_height = ft_face->glyph->metrics.height >> 6;
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+// else
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+// x_height = 0;
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+//}
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+
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+//void FontFaceHandle::BuildGlyphMap(const UnicodeRange& unicode_range)
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+//{
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+// for (word character_code = (word) (Math::Max< unsigned int >(unicode_range.min_codepoint, 32)); character_code <= unicode_range.max_codepoint; ++character_code)
|
|
|
+// {
|
|
|
+// int index = FT_Get_Char_Index(ft_face, character_code);
|
|
|
+// if (index != 0)
|
|
|
+// {
|
|
|
+// FT_Error error = FT_Load_Glyph(ft_face, index, 0);
|
|
|
+// if (error != 0)
|
|
|
+// {
|
|
|
+// Log::Message(Log::LT_WARNING, "Unable to load glyph for character '%u' on the font face '%s %s'; error code: %d.", character_code, ft_face->family_name, ft_face->style_name, error);
|
|
|
+// continue;
|
|
|
+// }
|
|
|
+
|
|
|
+// error = FT_Render_Glyph(ft_face->glyph, FT_RENDER_MODE_NORMAL);
|
|
|
+// if (error != 0)
|
|
|
+// {
|
|
|
+// Log::Message(Log::LT_WARNING, "Unable to render glyph for character '%u' on the font face '%s %s'; error code: %d.", character_code, ft_face->family_name, ft_face->style_name, error);
|
|
|
+// continue;
|
|
|
+// }
|
|
|
+
|
|
|
+// FontGlyph glyph;
|
|
|
+// glyph.character = character_code;
|
|
|
+// BuildGlyph(glyph, ft_face->glyph);
|
|
|
+// glyphs[character_code] = glyph;
|
|
|
+// }
|
|
|
+// }
|
|
|
+//}
|
|
|
+
|
|
|
+//void FontFaceHandle::BuildGlyph(FontGlyph& glyph, FT_GlyphSlot ft_glyph)
|
|
|
+//{
|
|
|
+// // Set the glyph's dimensions.
|
|
|
+// glyph.dimensions.x = ft_glyph->metrics.width >> 6;
|
|
|
+// glyph.dimensions.y = ft_glyph->metrics.height >> 6;
|
|
|
+
|
|
|
+// // Set the glyph's bearing.
|
|
|
+// glyph.bearing.x = ft_glyph->metrics.horiBearingX >> 6;
|
|
|
+// glyph.bearing.y = ft_glyph->metrics.horiBearingY >> 6;
|
|
|
+
|
|
|
+// // Set the glyph's advance.
|
|
|
+// glyph.advance = ft_glyph->metrics.horiAdvance >> 6;
|
|
|
+
|
|
|
+// // Set the glyph's bitmap dimensions.
|
|
|
+// glyph.bitmap_dimensions.x = ft_glyph->bitmap.width;
|
|
|
+// glyph.bitmap_dimensions.y = ft_glyph->bitmap.rows;
|
|
|
+
|
|
|
+// // Copy the glyph's bitmap data from the FreeType glyph handle to our glyph handle.
|
|
|
+// if (glyph.bitmap_dimensions.x * glyph.bitmap_dimensions.y != 0)
|
|
|
+// {
|
|
|
+// // Check the pixel mode is supported.
|
|
|
+// if (ft_glyph->bitmap.pixel_mode != FT_PIXEL_MODE_MONO &&
|
|
|
+// ft_glyph->bitmap.pixel_mode != FT_PIXEL_MODE_GRAY)
|
|
|
+// {
|
|
|
+// glyph.bitmap_data = NULL;
|
|
|
+// Log::Message(Log::LT_WARNING, "Unable to render glyph on the font face '%s %s'; unsupported pixel mode (%d).", ft_glyph->face->family_name, ft_glyph->face->style_name, ft_glyph->bitmap.pixel_mode);
|
|
|
+// }
|
|
|
+// else
|
|
|
+// {
|
|
|
+// glyph.bitmap_data = new byte[glyph.bitmap_dimensions.x * glyph.bitmap_dimensions.y];
|
|
|
+
|
|
|
+// byte* source_bitmap = ft_glyph->bitmap.buffer;
|
|
|
+// byte* destination_bitmap = glyph.bitmap_data;
|
|
|
+
|
|
|
+// // Copy the bitmap data into the newly-allocated space on our glyph.
|
|
|
+// switch (ft_glyph->bitmap.pixel_mode)
|
|
|
+// {
|
|
|
+// // Unpack 1-bit data into 8-bit.
|
|
|
+// case FT_PIXEL_MODE_MONO:
|
|
|
+// {
|
|
|
+// for (int i = 0; i < glyph.bitmap_dimensions.y; ++i)
|
|
|
+// {
|
|
|
+// int mask = 0x80;
|
|
|
+// byte* source_byte = source_bitmap;
|
|
|
+// for (int j = 0; j < glyph.bitmap_dimensions.x; ++j)
|
|
|
+// {
|
|
|
+// if ((*source_byte & mask) == mask)
|
|
|
+// destination_bitmap[j] = 255;
|
|
|
+// else
|
|
|
+// destination_bitmap[j] = 0;
|
|
|
+
|
|
|
+// mask >>= 1;
|
|
|
+// if (mask <= 0)
|
|
|
+// {
|
|
|
+// mask = 0x80;
|
|
|
+// ++source_byte;
|
|
|
+// }
|
|
|
+// }
|
|
|
+
|
|
|
+// destination_bitmap += glyph.bitmap_dimensions.x;
|
|
|
+// source_bitmap += ft_glyph->bitmap.pitch;
|
|
|
+// }
|
|
|
+// }
|
|
|
+// break;
|
|
|
+
|
|
|
+// // Directly copy 8-bit data.
|
|
|
+// case FT_PIXEL_MODE_GRAY:
|
|
|
+// {
|
|
|
+// for (int i = 0; i < glyph.bitmap_dimensions.y; ++i)
|
|
|
+// {
|
|
|
+// memcpy(destination_bitmap, source_bitmap, glyph.bitmap_dimensions.x);
|
|
|
+// destination_bitmap += glyph.bitmap_dimensions.x;
|
|
|
+// source_bitmap += ft_glyph->bitmap.pitch;
|
|
|
+// }
|
|
|
+// }
|
|
|
+// break;
|
|
|
+// }
|
|
|
+// }
|
|
|
+// }
|
|
|
+// else
|
|
|
+// glyph.bitmap_data = NULL;
|
|
|
+//}
|
|
|
+
|
|
|
+//int FontFaceHandle::GetKerning(word lhs, word rhs) const
|
|
|
+//{
|
|
|
+// if (!FT_HAS_KERNING(ft_face))
|
|
|
+// return 0;
|
|
|
+
|
|
|
+// FT_Vector ft_kerning;
|
|
|
+
|
|
|
+// FT_Error ft_error = FT_Get_Kerning(ft_face,
|
|
|
+// FT_Get_Char_Index(ft_face, lhs), FT_Get_Char_Index(ft_face, rhs),
|
|
|
+// FT_KERNING_DEFAULT, &ft_kerning);
|
|
|
+
|
|
|
+// if (ft_error != 0)
|
|
|
+// return 0;
|
|
|
+
|
|
|
+// int kerning = ft_kerning.x >> 6;
|
|
|
+// return kerning;
|
|
|
+//}
|
|
|
+
|
|
|
+//// Generates (or shares) a layer derived from a font effect.
|
|
|
+//FontFaceLayer* FontFaceHandle::GenerateLayer(FontEffect* font_effect)
|
|
|
+//{
|
|
|
+// // See if this effect has been instanced before, as part of a different configuration.
|
|
|
+// FontLayerMap::iterator i = layers.find(font_effect);
|
|
|
+// if (i != layers.end())
|
|
|
+// return i->second;
|
|
|
+
|
|
|
+// FontFaceLayer* layer = new FontFaceLayer();
|
|
|
+// layers[font_effect] = layer;
|
|
|
+
|
|
|
+// if (font_effect == NULL)
|
|
|
+// {
|
|
|
+// layer->Initialise(this);
|
|
|
+// }
|
|
|
+// else
|
|
|
+// {
|
|
|
+// // Determine which, if any, layer the new layer should copy its geometry and textures from.
|
|
|
+// FontFaceLayer* clone = NULL;
|
|
|
+// bool deep_clone = true;
|
|
|
+// String generation_key;
|
|
|
+
|
|
|
+// if (!font_effect->HasUniqueTexture())
|
|
|
+// {
|
|
|
+// clone = base_layer;
|
|
|
+// deep_clone = false;
|
|
|
+// }
|
|
|
+// else
|
|
|
+// {
|
|
|
+// generation_key = font_effect->GetName() + ";" + font_effect->GetGenerationKey();
|
|
|
+// FontLayerCache::iterator cache_iterator = layer_cache.find(generation_key);
|
|
|
+// if (cache_iterator != layer_cache.end())
|
|
|
+// clone = cache_iterator->second;
|
|
|
+// }
|
|
|
+
|
|
|
+// // Create a new layer.
|
|
|
+// layer->Initialise(this, font_effect, clone, deep_clone);
|
|
|
+
|
|
|
+// // Cache the layer in the layer cache if it generated its own textures (ie, didn't clone).
|
|
|
+// if (clone == NULL)
|
|
|
+// layer_cache[generation_key] = layer;
|
|
|
+// }
|
|
|
+
|
|
|
+// return layer;
|
|
|
+//}
|
|
|
+
|
|
|
+//}
|
|
|
+//}
|