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annotate OrthancStone/Sources/Scene2D/Internals/CairoPolylineRenderer.cpp @ 1652:fa9e6bf84958

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integrating pdf.js into Stone Web viewer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 16 Nov 2020 20:47:53 +0100
parents 8563ea5d8ae4
children 9ac2a65d4172
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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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
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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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
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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22
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23 #include "CairoPolylineRenderer.h"
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25 #include "../PolylineSceneLayer.h"
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27 namespace OrthancStone
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28 {
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29 namespace Internals
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30 {
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31 void CairoPolylineRenderer::Render(const AffineTransform2D& transform,
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32 unsigned int canvasWidth,
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33 unsigned int canvasHeight)
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34 {
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35 const PolylineSceneLayer& layer = GetLayer<PolylineSceneLayer>();
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37 cairo_t* cr = GetCairoContext();
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39 cairo_set_line_width(cr, layer.GetThickness());
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41 for (size_t i = 0; i < layer.GetChainsCount(); i++)
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42 {
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43 const Color& color = layer.GetColor(i);
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44 cairo_set_source_rgb(cr, color.GetRedAsFloat(),
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45 color.GetGreenAsFloat(),
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46 color.GetBlueAsFloat());
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48 const PolylineSceneLayer::Chain& chain = layer.GetChain(i);
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50 if (!chain.empty())
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51 {
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52 for (size_t j = 0; j < chain.size(); j++)
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53 {
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54 ScenePoint2D p = chain[j].Apply(transform);
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56 if (j == 0)
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57 {
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58 cairo_move_to(cr, p.GetX(), p.GetY());
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59 }
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60 else
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61 {
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62 cairo_line_to(cr, p.GetX(), p.GetY());
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63 }
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64 }
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66 if (layer.IsClosedChain(i))
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67 {
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68 ScenePoint2D p = chain[0].Apply(transform);
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69 cairo_line_to(cr, p.GetX(), p.GetY());
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70 }
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71 }
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72
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73 cairo_stroke(cr);
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74 }
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75 }
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76 }
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77 }