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view OrthancStone/Sources/Fonts/GlyphTextureAlphabet.cpp @ 2006:862c572021de
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 02 Nov 2022 17:10:04 +0100 |
parents | 7053b8a0aaec |
children | 07964689cb0b |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2022 Osimis S.A., Belgium * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program. If not, see * <http://www.gnu.org/licenses/>. **/ #include "GlyphTextureAlphabet.h" #include "TextBoundingBox.h" #include "../Toolbox/DynamicBitmap.h" #include <Images/Image.h> #include <Images/ImageProcessing.h> #include <OrthancException.h> #if defined(__EMSCRIPTEN__) /* Avoid this error: .../boost/math/special_functions/round.hpp:86:12: warning: implicit conversion from 'std::__2::numeric_limits<int>::type' (aka 'int') to 'float' changes value from 2147483647 to 2147483648 [-Wimplicit-int-float-conversion] .../boost/math/special_functions/round.hpp:93:11: note: in instantiation of function template specialization 'boost::math::iround<float, boost::math::policies::policy<boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy, boost::math::policies::default_policy> >' requested here .../orthanc-stone/Framework/Fonts/GlyphTextureAlphabet.cpp:92:28: note: in instantiation of function template specialization 'boost::math::iround<float>' requested here */ #pragma GCC diagnostic ignored "-Wimplicit-int-float-conversion" #endif #include <boost/math/special_functions/round.hpp> namespace OrthancStone { class GlyphTextureAlphabet::GlyphSizeVisitor : public GlyphAlphabet::IGlyphVisitor { private: unsigned int maxWidth_; unsigned int maxHeight_; public: GlyphSizeVisitor() : maxWidth_(0), maxHeight_(0) { } virtual void Visit(uint32_t unicode, const Glyph& glyph) ORTHANC_OVERRIDE { maxWidth_ = std::max(maxWidth_, glyph.GetWidth()); maxHeight_ = std::max(maxHeight_, glyph.GetHeight()); } unsigned int GetMaxWidth() const { return maxWidth_; } unsigned int GetMaxHeight() const { return maxHeight_; } }; class GlyphTextureAlphabet::TextureGenerator : public GlyphAlphabet::IGlyphVisitor { private: std::unique_ptr<Orthanc::ImageAccessor> texture_; unsigned int countColumns_; unsigned int countRows_; GlyphAlphabet& targetAlphabet_; unsigned int glyphMaxWidth_; unsigned int glyphMaxHeight_; unsigned int column_; unsigned int row_; public: TextureGenerator(GlyphAlphabet& targetAlphabet, unsigned int countGlyphs, unsigned int glyphMaxWidth, unsigned int glyphMaxHeight) : targetAlphabet_(targetAlphabet), glyphMaxWidth_(glyphMaxWidth), glyphMaxHeight_(glyphMaxHeight), column_(0), row_(0) { int c = boost::math::iround<float>(sqrt(static_cast<float>(countGlyphs))); if (c <= 0) { countColumns_ = 1; } else { countColumns_ = static_cast<unsigned int>(c); } countRows_ = countGlyphs / countColumns_; if (countGlyphs % countColumns_ != 0) { countRows_++; } texture_.reset(new Orthanc::Image(Orthanc::PixelFormat_RGBA32, countColumns_ * glyphMaxWidth_, countRows_ * glyphMaxHeight_, true /* force minimal pitch */)); Orthanc::ImageProcessing::Set(*texture_, 0, 0, 0, 0); } virtual void Visit(uint32_t unicode, const Glyph& glyph) ORTHANC_OVERRIDE { if (!glyph.HasPayload()) { throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); } if (column_ >= countColumns_ || row_ >= countRows_) { throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); } const Orthanc::ImageAccessor& source = dynamic_cast<const DynamicBitmap&>(glyph.GetPayload()).GetBitmap(); if (source.GetFormat() != Orthanc::PixelFormat_Grayscale8) { throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); } Orthanc::ImageAccessor target; { unsigned int x = column_ * glyphMaxWidth_; unsigned int y = row_ * glyphMaxHeight_; targetAlphabet_.Register(unicode, glyph, new TextureLocation(x, y)); texture_->GetRegion(target, x, y, source.GetWidth(), source.GetHeight()); } //Orthanc::ImageProcessing::Copy(target, bitmap->GetBitmap()); const unsigned int width = source.GetWidth(); const unsigned int height = source.GetHeight(); for (unsigned int y = 0; y < height; y++) { const uint8_t* p = reinterpret_cast<const uint8_t*>(source.GetConstRow(y)); uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); for (unsigned int x = 0; x < width; x++) { // Premultiplied alpha q[0] = 0; q[1] = 0; q[2] = 0; q[3] = *p; p++; q += 4; } } column_++; if (column_ == countColumns_) { column_ = 0; row_++; } } Orthanc::ImageAccessor* ReleaseTexture() { return texture_.release(); } }; class GlyphTextureAlphabet::RenderTextVisitor : public GlyphAlphabet::ITextVisitor { private: Orthanc::ImageAccessor& target_; const Orthanc::ImageAccessor& texture_; int offsetX_; int offsetY_; public: RenderTextVisitor(Orthanc::ImageAccessor& target, const GlyphTextureAlphabet& that, int offsetX, int offsetY) : target_(target), texture_(that.GetTexture()), offsetX_(offsetX), offsetY_(offsetY) { } virtual void Visit(uint32_t unicode, int x, int y, unsigned int width, unsigned int height, const Orthanc::IDynamicObject* payload) ORTHANC_OVERRIDE { int left = x + offsetX_; int top = y + offsetY_; assert(payload != NULL); const TextureLocation& location = *dynamic_cast<const TextureLocation*>(payload); assert(left >= 0 && top >= 0 && static_cast<unsigned int>(left) + width <= target_.GetWidth() && static_cast<unsigned int>(top) + height <= target_.GetHeight()); { Orthanc::ImageAccessor to; target_.GetRegion(to, left, top, width, height); Orthanc::ImageAccessor from; texture_.GetRegion(from, location.GetX(), location.GetY(), width, height); Orthanc::ImageProcessing::Copy(to, from); } } }; GlyphTextureAlphabet::GlyphTextureAlphabet(const GlyphBitmapAlphabet& sourceAlphabet) : textureWidth_(0), textureHeight_(0) { GlyphSizeVisitor size; sourceAlphabet.GetAlphabet().Apply(size); TextureGenerator generator(alphabet_, static_cast<unsigned int>(sourceAlphabet.GetAlphabet().GetSize()), size.GetMaxWidth(), size.GetMaxHeight()); sourceAlphabet.GetAlphabet().Apply(generator); texture_.reset(generator.ReleaseTexture()); textureWidth_ = texture_->GetWidth(); textureHeight_ = texture_->GetHeight(); } const Orthanc::ImageAccessor& GlyphTextureAlphabet::GetTexture() const { if (texture_.get() == NULL) { throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); } else { return *texture_; } } Orthanc::ImageAccessor* GlyphTextureAlphabet::ReleaseTexture() { if (texture_.get() == NULL) { throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); } else { return texture_.release(); } } Orthanc::ImageAccessor* GlyphTextureAlphabet::RenderText(const std::string& utf8) { TextBoundingBox box(alphabet_, utf8); std::unique_ptr<Orthanc::ImageAccessor> bitmap( new Orthanc::Image(Orthanc::PixelFormat_RGBA32, box.GetWidth(), box.GetHeight(), true /* force minimal pitch */)); Orthanc::ImageProcessing::Set(*bitmap, 0, 0, 0, 0); RenderTextVisitor visitor(*bitmap, *this, -box.GetLeft(), -box.GetTop()); alphabet_.Apply(visitor, utf8); return bitmap.release(); } }