annotate OrthancStone/Sources/Scene2D/Internals/OpenGLTextRenderer.cpp @ 1808:797633f48a9c

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 20 May 2021 17:28:16 +0200
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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) 2017-2021 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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23 #include "OpenGLTextRenderer.h"
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25 namespace OrthancStone
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26 {
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27 namespace Internals
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28 {
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29 void OpenGLTextRenderer::LoadLayer(const TextSceneLayer& layer)
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30 {
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31 if (!context_.IsContextLost())
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32 data_.reset(new OpenGLTextProgram::Data(context_, alphabet_, layer));
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33 else
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34 data_.reset(NULL);
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35 }
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38 OpenGLTextRenderer::OpenGLTextRenderer(OpenGL::IOpenGLContext& context,
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39 OpenGLTextProgram& program,
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40 const GlyphTextureAlphabet& alphabet,
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41 OpenGL::OpenGLTexture& texture,
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42 const TextSceneLayer& layer) :
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43 context_(context),
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44 program_(program),
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45 alphabet_(alphabet),
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46 texture_(texture)
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47 {
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48 LoadLayer(layer);
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49 }
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51
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52 void OpenGLTextRenderer::Render(const AffineTransform2D& transform,
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53 unsigned int canvasWidth,
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54 unsigned int canvasHeight)
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55 {
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56 if (!context_.IsContextLost() && data_.get() != NULL)
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57 {
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58 program_.Apply(texture_, *data_, transform, canvasWidth, canvasHeight);
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59 }
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60 }
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62 void OpenGLTextRenderer::Update(const ISceneLayer& layer)
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63 {
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64 LoadLayer(dynamic_cast<const TextSceneLayer&>(layer));
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65 }
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66 }
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67 }