Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Toolbox/TextRenderer.cpp @ 1677:51bab5188a13
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| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 23 Nov 2020 19:24:18 +0100 |
| parents | 8563ea5d8ae4 |
| children | 9ac2a65d4172 |
| rev | line source |
|---|---|
| 1463 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2020 Osimis S.A., Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
|
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8 * modify it under the terms of the GNU Lesser General Public License |
| 1463 | 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 | |
|
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
8563ea5d8ae4
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parents:
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15 * Lesser General Public License for more details. |
| 1463 | 16 * |
|
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17 * You should have received a copy of the GNU Lesser General Public |
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8563ea5d8ae4
relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
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parents:
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18 * License along with this program. If not, see |
|
8563ea5d8ae4
relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
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19 * <http://www.gnu.org/licenses/>. |
| 1463 | 20 **/ |
| 21 | |
| 22 | |
| 23 #include "TextRenderer.h" | |
| 24 | |
| 25 #include "../Scene2D/CairoCompositor.h" | |
| 26 #include "../Scene2D/ColorTextureSceneLayer.h" | |
| 27 #include "../Scene2D/FloatTextureSceneLayer.h" | |
| 28 #include "../Scene2D/TextSceneLayer.h" | |
| 29 #include "../Fonts/GlyphBitmapAlphabet.h" | |
| 30 #include "../Fonts/FontRenderer.h" | |
| 31 | |
| 32 #include <Images/Image.h> | |
| 33 #include <Images/ImageProcessing.h> | |
| 34 #include <Images/PngWriter.h> | |
| 35 #include <Toolbox.h> | |
| 36 | |
| 37 namespace OrthancStone | |
| 38 { | |
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39 Orthanc::ImageAccessor* TextRenderer::Render(const std::string& ttf, |
| 1463 | 40 unsigned int fontSize, |
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41 const std::string& utf8String) |
| 1463 | 42 { |
| 43 FontRenderer renderer; | |
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44 renderer.LoadFont(ttf, fontSize); |
| 1463 | 45 |
| 46 // add each char to be rendered to the alphabet | |
| 47 std::unique_ptr<GlyphBitmapAlphabet> alphabet(new GlyphBitmapAlphabet); | |
| 48 | |
| 49 size_t posInString = 0; | |
| 50 uint32_t unicode; | |
| 51 size_t utf8CharLength; | |
| 52 | |
| 53 while (posInString < utf8String.size()) | |
| 54 { | |
| 55 Orthanc::Toolbox::Utf8ToUnicodeCharacter(unicode, utf8CharLength, utf8String, posInString); | |
| 56 alphabet->AddUnicodeCharacter(renderer, unicode); | |
| 57 posInString += utf8CharLength; | |
| 58 } | |
| 59 | |
| 60 | |
| 61 std::unique_ptr<Orthanc::ImageAccessor> renderedText(alphabet->RenderText(utf8String)); | |
| 62 | |
| 63 // add a blank line on top of the text (to improve bilinear filtering of the topmost line) | |
| 64 std::unique_ptr<Orthanc::Image> renderedTextExtended(new Orthanc::Image(renderedText->GetFormat(), renderedText->GetWidth(), renderedText->GetHeight() + 1, true)); | |
| 65 | |
| 66 Orthanc::ImageAccessor textRegion; | |
| 67 Orthanc::ImageAccessor firstLineRegion; | |
| 68 | |
| 69 renderedTextExtended->GetRegion(firstLineRegion, 0, 0, renderedText->GetWidth(), 1); | |
| 70 Orthanc::ImageProcessing::Set(firstLineRegion, 0); | |
| 71 | |
| 72 renderedTextExtended->GetRegion(textRegion, 0, 1, renderedText->GetWidth(), renderedText->GetHeight()); | |
| 73 Orthanc::ImageProcessing::Copy(textRegion, *renderedText); | |
| 74 | |
| 75 return renderedTextExtended.release(); | |
| 76 } | |
| 77 | |
| 78 | |
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79 Orthanc::ImageAccessor* TextRenderer::RenderWithAlpha(const std::string& ttf, |
| 1463 | 80 unsigned int fontSize, |
| 81 const std::string& utf8String, | |
| 82 uint8_t foreground) | |
| 83 { | |
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84 std::unique_ptr<Orthanc::ImageAccessor> renderedText8(Render(ttf, fontSize, utf8String)); |
| 1463 | 85 std::unique_ptr<Orthanc::Image> target(new Orthanc::Image(Orthanc::PixelFormat_RGBA32, renderedText8->GetWidth(), renderedText8->GetHeight(), true)); |
| 86 | |
| 87 Orthanc::ImageProcessing::Set(*target, foreground, foreground, foreground, *renderedText8); | |
| 88 return target.release(); | |
| 89 } | |
| 90 | |
| 91 | |
| 92 // currently disabled because the background is actually not transparent once we use the Cairo Compositor ! | |
| 93 // | |
| 94 // // renders text in color + a border with alpha in a RGBA32 image | |
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95 // Orthanc::ImageAccessor* TextRenderer::RenderWithAlpha(const std::string& ttf, |
| 1463 | 96 // unsigned int fontSize, |
| 97 // const std::string& utf8String, | |
| 98 // uint8_t foreground, | |
| 99 // uint8_t borderColor) | |
| 100 // { | |
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101 // std::unique_ptr<Orthanc::ImageAccessor> renderedBorderAlpha(RenderWithAlpha(ttf, fontSize, utf8String, borderColor)); |
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parents:
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102 // std::unique_ptr<Orthanc::ImageAccessor> renderedTextAlpha(RenderWithAlpha(ttf, fontSize, utf8String, foreground)); |
| 1463 | 103 |
| 104 // unsigned int textWidth = renderedBorderAlpha->GetWidth(); | |
| 105 // unsigned int textHeight = renderedBorderAlpha->GetHeight(); | |
| 106 | |
| 107 // Scene2D targetScene; | |
| 108 // std::unique_ptr<ColorTextureSceneLayer> borderLayerLeft(new ColorTextureSceneLayer(*renderedBorderAlpha)); | |
| 109 // std::unique_ptr<ColorTextureSceneLayer> borderLayerRight(new ColorTextureSceneLayer(*renderedBorderAlpha)); | |
| 110 // std::unique_ptr<ColorTextureSceneLayer> borderLayerTop(new ColorTextureSceneLayer(*renderedBorderAlpha)); | |
| 111 // std::unique_ptr<ColorTextureSceneLayer> borderLayerBottom(new ColorTextureSceneLayer(*renderedBorderAlpha)); | |
| 112 // std::unique_ptr<ColorTextureSceneLayer> textLayerCenter(new ColorTextureSceneLayer(*renderedTextAlpha)); | |
| 113 | |
| 114 // borderLayerLeft->SetOrigin(0, 1); | |
| 115 // borderLayerRight->SetOrigin(2, 1); | |
| 116 // borderLayerTop->SetOrigin(1, 0); | |
| 117 // borderLayerBottom->SetOrigin(1, 2); | |
| 118 // textLayerCenter->SetOrigin(1, 1); | |
| 119 // targetScene.SetLayer(1, borderLayerLeft.release()); | |
| 120 // targetScene.SetLayer(2, borderLayerRight.release()); | |
| 121 // targetScene.SetLayer(3, borderLayerTop.release()); | |
| 122 // targetScene.SetLayer(4, borderLayerBottom.release()); | |
| 123 // targetScene.SetLayer(5, textLayerCenter.release()); | |
| 124 | |
| 125 // targetScene.FitContent(textWidth + 2, textHeight + 2); | |
| 126 // CairoCompositor compositor(targetScene, textWidth + 2, textHeight + 2); | |
| 127 // compositor.Refresh(); | |
| 128 | |
| 129 // Orthanc::ImageAccessor canvas; | |
| 130 // compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
| 131 | |
| 132 // std::unique_ptr<Orthanc::Image> output(new Orthanc::Image(Orthanc::PixelFormat_RGBA32, canvas.GetWidth(), canvas.GetHeight(), false)); | |
| 133 // Orthanc::ImageProcessing::Convert(*output, canvas); | |
| 134 // return output.release(); | |
| 135 // } | |
| 136 } |