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annotate OrthancStone/Sources/Scene2D/Internals/FixedPointAligner.cpp @ 1871:7053b8a0aaec

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:18:48 +0100
parents 3889ae96d2e9
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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
1871
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23 #include "../../Scene2DViewport/ViewportController.h"
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24 #include "FixedPointAligner.h"
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26 namespace OrthancStone
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27 {
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28 namespace Internals
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29 {
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30 FixedPointAligner::FixedPointAligner(boost::weak_ptr<IViewport> viewport,
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31 const ScenePoint2D& p)
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32 : viewport_(viewport)
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33 , canvas_(p)
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34 {
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35 std::unique_ptr<IViewport::ILock> lock(GetViewportLock());
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36 pivot_ = canvas_.Apply(lock->GetController().GetCanvasToSceneTransform());
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37 }
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38
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39 IViewport::ILock* FixedPointAligner::GetViewportLock()
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40 {
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41 boost::shared_ptr<IViewport> viewport = viewport_.lock();
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42 if (viewport)
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43 return viewport->Lock();
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44 else
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45 return NULL;
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46 }
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48 void FixedPointAligner::Apply()
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49 {
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50 std::unique_ptr<IViewport::ILock> lock(GetViewportLock());
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51 ScenePoint2D p = canvas_.Apply(
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52 lock->GetController().GetCanvasToSceneTransform());
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53
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54 lock->GetController().SetSceneToCanvasTransform(
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55 AffineTransform2D::Combine(
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56 lock->GetController().GetSceneToCanvasTransform(),
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57 AffineTransform2D::CreateOffset(p.GetX() - pivot_.GetX(),
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58 p.GetY() - pivot_.GetY())));
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59 lock->Invalidate();
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60 }
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61 }
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62 }