Mercurial > hg > orthanc-stone
annotate Framework/Scene2D/Internals/CairoTextRenderer.cpp @ 1056:28deed30afa8 broker
creating branch broker
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 11 Oct 2019 13:24:07 +0200 |
parents | 6e888cf6a48b |
children | 2d8ab34c8c91 |
rev | line source |
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597 | 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 "CairoTextRenderer.h" | |
23 | |
24 #include <Core/OrthancException.h> | |
25 | |
26 namespace OrthancStone | |
27 { | |
28 namespace Internals | |
29 { | |
30 CairoTextRenderer::CairoTextRenderer(ICairoContextProvider& target, | |
31 const GlyphBitmapAlphabet& alphabet, | |
32 const TextSceneLayer& layer) : | |
33 CairoBaseRenderer(target, layer) | |
34 { | |
35 std::auto_ptr<Orthanc::ImageAccessor> source(alphabet.RenderText(layer.GetText())); | |
36 | |
37 if (source.get() != NULL) | |
38 { | |
39 text_.SetSize(source->GetWidth(), source->GetHeight(), true); | |
40 | |
41 Orthanc::ImageAccessor target; | |
42 text_.GetWriteableAccessor(target); | |
43 | |
44 if (source->GetFormat() != Orthanc::PixelFormat_Grayscale8 || | |
45 target.GetFormat() != Orthanc::PixelFormat_BGRA32) | |
46 { | |
47 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
48 } | |
49 | |
50 const unsigned int width = source->GetWidth(); | |
804
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parents:
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changeset
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51 const Color& color = layer.GetColor(); |
597 | 52 |
53 for (unsigned int y = 0; y < source->GetHeight(); y++) | |
54 { | |
55 const uint8_t* p = reinterpret_cast<const uint8_t*>(source->GetConstRow(y)); | |
56 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); | |
57 | |
58 for (unsigned int x = 0; x < width; x++) | |
59 { | |
60 unsigned int alpha = *p; | |
61 | |
62 // Premultiplied alpha | |
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63 q[0] = static_cast<uint8_t>((color.GetBlue() * alpha) / 255); |
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parents:
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diff
changeset
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64 q[1] = static_cast<uint8_t>((color.GetGreen() * alpha) / 255); |
61ba4b504e9a
PolylineSceneLayer now has one color per chain
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
597
diff
changeset
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65 q[2] = static_cast<uint8_t>((color.GetRed() * alpha) / 255); |
597 | 66 q[3] = *p; |
67 | |
68 p++; | |
69 q += 4; | |
70 } | |
71 } | |
72 | |
73 cairo_surface_mark_dirty(text_.GetObject()); | |
74 } | |
75 } | |
76 | |
77 | |
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parents:
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78 void CairoTextRenderer::Render(const AffineTransform2D& transform, |
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parents:
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79 unsigned int canvasWidth, |
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renderers now have access to canvas width/height
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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80 unsigned int canvasHeight) |
597 | 81 { |
82 if (text_.GetWidth() != 0 && | |
83 text_.GetHeight() != 0) | |
84 { | |
85 const TextSceneLayer& layer = GetLayer<TextSceneLayer>(); | |
86 | |
87 cairo_t* cr = GetCairoContext(); | |
804
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PolylineSceneLayer now has one color per chain
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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88 cairo_set_source_rgb(cr, layer.GetColor().GetRedAsFloat(), |
61ba4b504e9a
PolylineSceneLayer now has one color per chain
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parents:
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diff
changeset
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89 layer.GetColor().GetGreenAsFloat(), |
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PolylineSceneLayer now has one color per chain
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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90 layer.GetColor().GetBlueAsFloat()); |
597 | 91 |
92 double dx, dy; // In pixels | |
93 ComputeAnchorTranslation(dx, dy, layer.GetAnchor(), text_.GetWidth(), | |
94 text_.GetHeight(), layer.GetBorder()); | |
95 | |
96 double x = layer.GetX(); | |
97 double y = layer.GetY(); | |
98 transform.Apply(x, y); | |
99 | |
100 cairo_save(cr); | |
101 | |
102 cairo_matrix_t t; | |
103 cairo_matrix_init_identity(&t); | |
104 cairo_matrix_translate(&t, x + dx, y + dy); | |
105 cairo_transform(cr, &t); | |
106 | |
107 cairo_set_operator(cr, CAIRO_OPERATOR_OVER); | |
108 cairo_set_source_surface(cr, text_.GetObject(), 0, 0); | |
109 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BILINEAR); | |
110 cairo_paint(cr); | |
111 | |
112 cairo_restore(cr); | |
113 } | |
114 } | |
115 } | |
116 } |