Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Scene2D/CairoCompositor.cpp @ 1576:92fca2b3ba3d
sanitizing the handling of canvas size
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 24 Sep 2020 16:40:30 +0200 |
| parents | 244ad1e4e76a |
| children | 4fb8fdf03314 |
| rev | line source |
|---|---|
| 597 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 597 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "CairoCompositor.h" | |
| 23 | |
| 24 #include "Internals/CairoColorTextureRenderer.h" | |
| 25 #include "Internals/CairoFloatTextureRenderer.h" | |
| 26 #include "Internals/CairoInfoPanelRenderer.h" | |
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27 #include "Internals/CairoLookupTableTextureRenderer.h" |
| 597 | 28 #include "Internals/CairoPolylineRenderer.h" |
| 29 #include "Internals/CairoTextRenderer.h" | |
| 30 | |
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31 #include <OrthancException.h> |
| 597 | 32 |
| 33 namespace OrthancStone | |
| 34 { | |
| 35 cairo_t* CairoCompositor::GetCairoContext() | |
| 36 { | |
| 37 if (context_.get() == NULL) | |
| 38 { | |
| 39 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 40 } | |
| 41 else | |
| 42 { | |
| 43 return context_->GetObject(); | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 Internals::CompositorHelper::ILayerRenderer* CairoCompositor::Create(const ISceneLayer& layer) | |
| 48 { | |
| 49 switch (layer.GetType()) | |
| 50 { | |
| 51 case ISceneLayer::Type_Polyline: | |
| 52 return new Internals::CairoPolylineRenderer(*this, layer); | |
| 53 | |
| 54 case ISceneLayer::Type_InfoPanel: | |
| 55 return new Internals::CairoInfoPanelRenderer(*this, layer); | |
| 56 | |
| 57 case ISceneLayer::Type_ColorTexture: | |
| 58 return new Internals::CairoColorTextureRenderer(*this, layer); | |
| 59 | |
| 60 case ISceneLayer::Type_FloatTexture: | |
| 61 return new Internals::CairoFloatTextureRenderer(*this, layer); | |
| 62 | |
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63 case ISceneLayer::Type_LookupTableTexture: |
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64 return new Internals::CairoLookupTableTextureRenderer(*this, layer); |
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65 |
| 597 | 66 case ISceneLayer::Type_Text: |
| 67 { | |
| 68 const TextSceneLayer& l = dynamic_cast<const TextSceneLayer&>(layer); | |
| 69 | |
| 70 Fonts::const_iterator found = fonts_.find(l.GetFontIndex()); | |
| 71 if (found == fonts_.end()) | |
| 72 { | |
| 73 return NULL; | |
| 74 } | |
| 75 else | |
| 76 { | |
| 77 assert(found->second != NULL); | |
| 78 return new Internals::CairoTextRenderer(*this, *found->second, l); | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 default: | |
| 83 return NULL; | |
| 84 } | |
| 85 } | |
| 86 | |
| 87 | |
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88 CairoCompositor::CairoCompositor(unsigned int canvasWidth, |
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89 unsigned int canvasHeight) |
| 597 | 90 { |
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91 ResetScene(); |
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92 canvas_.SetSize(canvasWidth, canvasHeight, false); |
| 909 | 93 } |
| 94 | |
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95 void CairoCompositor::SetCanvasSize(unsigned int canvasWidth, |
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96 unsigned int canvasHeight) |
| 909 | 97 { |
| 597 | 98 canvas_.SetSize(canvasWidth, canvasHeight, false); |
| 99 } | |
| 100 | |
| 101 CairoCompositor::~CairoCompositor() | |
| 102 { | |
| 103 for (Fonts::iterator it = fonts_.begin(); it != fonts_.end(); ++it) | |
| 104 { | |
| 105 assert(it->second != NULL); | |
| 106 delete it->second; | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 | |
| 111 void CairoCompositor::SetFont(size_t index, | |
| 112 GlyphBitmapAlphabet* dict) // Takes ownership | |
| 113 { | |
| 114 if (dict == NULL) | |
| 115 { | |
| 116 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 117 } | |
| 118 else | |
| 119 { | |
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120 std::unique_ptr<GlyphBitmapAlphabet> protection(dict); |
| 597 | 121 |
| 122 Fonts::iterator found = fonts_.find(index); | |
| 123 | |
| 124 if (found == fonts_.end()) | |
| 125 { | |
| 126 fonts_[index] = protection.release(); | |
| 127 } | |
| 128 else | |
| 129 { | |
| 130 assert(found->second != NULL); | |
| 131 delete found->second; | |
| 132 | |
| 133 found->second = protection.release(); | |
| 134 } | |
| 135 } | |
| 136 } | |
| 137 | |
| 138 | |
| 139 #if ORTHANC_ENABLE_LOCALE == 1 | |
| 140 void CairoCompositor::SetFont(size_t index, | |
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141 const std::string& ttf, |
| 597 | 142 unsigned int fontSize, |
| 143 Orthanc::Encoding codepage) | |
| 144 { | |
| 145 FontRenderer renderer; | |
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146 renderer.LoadFont(ttf, fontSize); |
| 597 | 147 |
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148 std::unique_ptr<GlyphBitmapAlphabet> alphabet(new GlyphBitmapAlphabet); |
| 597 | 149 alphabet->LoadCodepage(renderer, codepage); |
| 150 | |
| 151 SetFont(index, alphabet.release()); | |
| 152 } | |
| 153 #endif | |
| 154 | |
| 155 | |
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parents:
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diff
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156 void CairoCompositor::Refresh(const Scene2D& scene) |
| 597 | 157 { |
| 158 context_.reset(new CairoContext(canvas_)); | |
| 159 | |
| 160 // https://www.cairographics.org/FAQ/#clear_a_surface | |
| 161 cairo_set_source_rgba(context_->GetObject(), 0, 0, 0, 255); | |
| 162 cairo_paint(context_->GetObject()); | |
| 163 | |
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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164 helper_->Refresh(scene, canvas_.GetWidth(), canvas_.GetHeight()); |
| 597 | 165 context_.reset(); |
| 166 } | |
| 167 | |
| 168 | |
| 169 Orthanc::ImageAccessor* CairoCompositor::RenderText(size_t fontIndex, | |
| 170 const std::string& utf8) const | |
| 171 { | |
| 172 Fonts::const_iterator found = fonts_.find(fontIndex); | |
| 173 | |
| 174 if (found == fonts_.end()) | |
| 175 { | |
| 176 return NULL; | |
| 177 } | |
| 178 else | |
| 179 { | |
| 180 assert(found->second != NULL); | |
| 181 return found->second->RenderText(utf8); | |
| 182 } | |
| 183 } | |
| 184 } |