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annotate OrthancStone/Sources/Scene2D/ICompositor.h @ 1576:92fca2b3ba3d

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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
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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 Affero 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 * Affero 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 Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #pragma once
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23
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24 #include "Scene2D.h"
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25 #include "ScenePoint2D.h"
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26
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27 namespace OrthancStone
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28 {
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29 class ICompositor : public boost::noncopyable
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30 {
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31 public:
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32 virtual ~ICompositor()
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33 {
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34 }
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35
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36 virtual void SetCanvasSize(unsigned int canvasWidth,
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37 unsigned int canvasHeight) = 0;
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38
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39 virtual unsigned int GetCanvasWidth() const = 0;
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40
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41 virtual unsigned int GetCanvasHeight() const = 0;
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42
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43 /**
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44 * WARNING: "Refresh()" must always be called with the same
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45 * scene. If the scene changes, a call to "ResetScene()" must be
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46 * done to reset the tracking of the revisions of the layers.
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47 **/
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48 virtual void Refresh(const Scene2D& scene) = 0;
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49
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50 virtual void ResetScene() = 0;
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51
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52 #if ORTHANC_ENABLE_LOCALE == 1
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53 virtual void SetFont(size_t index,
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54 const std::string& ttf,
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55 unsigned int fontSize,
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56 Orthanc::Encoding codepage) = 0;
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57 #endif
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58
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59 // Get the center of the given pixel, in canvas coordinates
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60 ScenePoint2D GetPixelCenterCoordinates(int x, int y) const
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61 {
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62 return ScenePoint2D(
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63 static_cast<double>(x) + 0.5 - static_cast<double>(GetCanvasWidth()) / 2.0,
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64 static_cast<double>(y) + 0.5 - static_cast<double>(GetCanvasHeight()) / 2.0);
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65 }
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66
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67 void FitContent(Scene2D& scene) const
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68 {
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69 scene.FitContent(GetCanvasWidth(), GetCanvasHeight());
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70 }
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71 };
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72 }