Mercurial > hg > orthanc-stone
comparison Framework/Toolbox/TextRenderer.cpp @ 1085:63539e826355
Added TextRenderer
author | Alain Mazy <alain@mazy.be> |
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date | Tue, 22 Oct 2019 17:24:37 +0200 |
parents | |
children | 3dbdcecccf5d |
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1082:8493f5fb6165 | 1085:63539e826355 |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
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 "TextRenderer.h" | |
23 | |
24 #include <../../Framework/Scene2D/CairoCompositor.h> | |
25 #include <../../Framework/Scene2D/ColorTextureSceneLayer.h> | |
26 #include <../../Framework/Scene2D/FloatTextureSceneLayer.h> | |
27 #include <../../Framework/Scene2D/TextSceneLayer.h> | |
28 #include <../../Framework/Fonts/GlyphBitmapAlphabet.h> | |
29 #include <../../Framework/Fonts/FontRenderer.h> | |
30 #include <Core/Images/PngWriter.h> | |
31 | |
32 #include "Core/Images/Image.h" | |
33 #include "Core/Images/ImageProcessing.h" | |
34 | |
35 namespace OrthancStone | |
36 { | |
37 Orthanc::ImageAccessor* TextRenderer::Render(Orthanc::EmbeddedResources::FileResourceId font, | |
38 unsigned int fontSize, | |
39 const std::string& utf8String | |
40 ) | |
41 { | |
42 FontRenderer renderer; | |
43 renderer.LoadFont(font, fontSize); | |
44 | |
45 // add each char to be rendered to the alphabet | |
46 std::auto_ptr<GlyphBitmapAlphabet> alphabet(new GlyphBitmapAlphabet); | |
47 | |
48 size_t posInString = 0; | |
49 uint32_t unicode; | |
50 size_t utf8CharLength; | |
51 | |
52 while (posInString < utf8String.size()) | |
53 { | |
54 Orthanc::Toolbox::Utf8ToUnicodeCharacter(unicode, utf8CharLength, utf8String, posInString); | |
55 alphabet->AddUnicodeCharacter(renderer, unicode); | |
56 posInString += utf8CharLength; | |
57 } | |
58 | |
59 return alphabet->RenderText(utf8String); | |
60 } | |
61 | |
62 | |
63 Orthanc::ImageAccessor* TextRenderer::RenderWithAlpha(Orthanc::EmbeddedResources::FileResourceId resource, | |
64 unsigned int fontSize, | |
65 const std::string& utf8String, | |
66 uint8_t foreground) | |
67 { | |
68 std::auto_ptr<Orthanc::ImageAccessor> renderedText8(RenderWhiteOnBlack(resource, fontSize, utf8String)); | |
69 std::auto_ptr<Orthanc::Image> target(new Orthanc::Image(Orthanc::PixelFormat_RGBA32, renderedText8->GetWidth(), renderedText8->GetHeight(), true)); | |
70 | |
71 Orthanc::ImageProcessing::Set(*target, foreground, foreground, foreground, *renderedText8); | |
72 return target.release(); | |
73 } | |
74 | |
75 | |
76 // currently disabled because the background is actually not transparent once we use the Cairo Compositor ! | |
77 // | |
78 // // renders text in color + a border with alpha in a RGBA32 image | |
79 // Orthanc::ImageAccessor* TextRenderer::RenderWithAlpha(Orthanc::EmbeddedResources::FileResourceId resource, | |
80 // unsigned int fontSize, | |
81 // const std::string& utf8String, | |
82 // uint8_t foreground, | |
83 // uint8_t borderColor) | |
84 // { | |
85 // std::auto_ptr<Orthanc::ImageAccessor> renderedBorderAlpha(RenderWithAlpha(resource, fontSize, utf8String, borderColor)); | |
86 // std::auto_ptr<Orthanc::ImageAccessor> renderedTextAlpha(RenderWithAlpha(resource, fontSize, utf8String, foreground)); | |
87 | |
88 // unsigned int textWidth = renderedBorderAlpha->GetWidth(); | |
89 // unsigned int textHeight = renderedBorderAlpha->GetHeight(); | |
90 | |
91 // Scene2D targetScene; | |
92 // std::auto_ptr<ColorTextureSceneLayer> borderLayerLeft(new ColorTextureSceneLayer(*renderedBorderAlpha)); | |
93 // std::auto_ptr<ColorTextureSceneLayer> borderLayerRight(new ColorTextureSceneLayer(*renderedBorderAlpha)); | |
94 // std::auto_ptr<ColorTextureSceneLayer> borderLayerTop(new ColorTextureSceneLayer(*renderedBorderAlpha)); | |
95 // std::auto_ptr<ColorTextureSceneLayer> borderLayerBottom(new ColorTextureSceneLayer(*renderedBorderAlpha)); | |
96 // std::auto_ptr<ColorTextureSceneLayer> textLayerCenter(new ColorTextureSceneLayer(*renderedTextAlpha)); | |
97 | |
98 // borderLayerLeft->SetOrigin(0, 1); | |
99 // borderLayerRight->SetOrigin(2, 1); | |
100 // borderLayerTop->SetOrigin(1, 0); | |
101 // borderLayerBottom->SetOrigin(1, 2); | |
102 // textLayerCenter->SetOrigin(1, 1); | |
103 // targetScene.SetLayer(1, borderLayerLeft.release()); | |
104 // targetScene.SetLayer(2, borderLayerRight.release()); | |
105 // targetScene.SetLayer(3, borderLayerTop.release()); | |
106 // targetScene.SetLayer(4, borderLayerBottom.release()); | |
107 // targetScene.SetLayer(5, textLayerCenter.release()); | |
108 | |
109 // targetScene.FitContent(textWidth + 2, textHeight + 2); | |
110 // CairoCompositor compositor(targetScene, textWidth + 2, textHeight + 2); | |
111 // compositor.Refresh(); | |
112 | |
113 // Orthanc::ImageAccessor canvas; | |
114 // compositor.GetCanvas().GetReadOnlyAccessor(canvas); | |
115 | |
116 // std::auto_ptr<Orthanc::Image> output(new Orthanc::Image(Orthanc::PixelFormat_RGBA32, canvas.GetWidth(), canvas.GetHeight(), false)); | |
117 // Orthanc::ImageProcessing::Convert(*output, canvas); | |
118 // return output.release(); | |
119 // } | |
120 } |