109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2018 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#pragma once
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#include <osgEarthImGui/Common>
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#include <osgEarth/Config>
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#include <osgEarth/GeoData>
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#include <osgEarth/NodeUtils>
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#include <osgEarth/MapNode>
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#include <osgEarth/Terrain>
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#include <osgEarth/GLUtils>
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#include <osg/Texture2D>
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#include <osg/RenderInfo>
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#include <osgViewer/View>
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#include <osgViewer/ViewerEventHandlers>
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#include <typeinfo>
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struct ImGuiSettingsHandler;
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namespace osgEarth
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{
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/**
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* And OSG realize operation that will initialize the GLEW library
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* as required for ImGui
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*/
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class ImGuiRealizeOperation : public osg::Operation
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{
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public:
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ImGuiRealizeOperation();
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void operator()(osg::Object* object) override;
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};
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/**
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* Generic OSG event handler that will render ImGui elements.
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* Subclass this and override "draw" to render your own ImGui interface,
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* and add this instance as an event handler to your viewer.
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*/
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class ImGuiEventHandler : public osgGA::GUIEventHandler
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{
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public:
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using RealizeOperation = osgEarth::ImGuiRealizeOperation;
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bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa) override;
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virtual void load(void* section, const std::string& key, const std::string& value) { }
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virtual void save(osgEarth::Config& conf) { }
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virtual void* findByName(const char* name) { return nullptr; }
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virtual void* findByType(const std::type_info& type) { return nullptr; }
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bool getAutoAdjustProjectionMatrix() const { return _autoAdjustProjectionMatrix; }
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void setAutoAdjustProjectionMatrix(bool value) { _autoAdjustProjectionMatrix = value; }
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// Put your ImGui code inside this function
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virtual void draw(osg::RenderInfo& renderInfo) = 0;
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void newFrame(osg::RenderInfo& renderInfo);
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void render(osg::RenderInfo& renderInfo);
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bool _show = true;
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protected:
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bool _dirtySettings = false;
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private:
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struct ImGuiNewFrameCallback;
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struct ImGuiRenderCallback;
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double _time = 0.0;
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bool _initialized = false;
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bool _firstFrame = true;
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bool _autoAdjustProjectionMatrix = true;
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bool _dragging = false;
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static void* handleStartEntry(ImGuiContext* ctx, ImGuiSettingsHandler* handler, const char* name);
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static void handleReadSetting(ImGuiContext* ctx, ImGuiSettingsHandler* handler, void* entry, const char* line);
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static void handleWriteSettings(ImGuiContext* ctx, ImGuiSettingsHandler* handler, ImGuiTextBuffer* out_buf);
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void installSettingsHandler();
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ImGuiKey convertKey(int osgKey);
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ImGuiButtonFlags convertMouseButton(int osgButtonMask);
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};
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}
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