// panel.hxx - generic support classes for a 2D panel. // // Written by David Megginson, started January 2000. // Adopted for standalone fgpanel application by Torsten Dreyer, August 2009 // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License as // published by the Free Software Foundation; either version 2 of the // License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. // // $Id$ #ifndef __PANEL_HXX #define __PANEL_HXX #ifndef __cplusplus # error This library requires C++ #endif #ifdef HAVE_CONFIG_H # include #endif #include #include #include #include #include #include #include "FGTextureLoaderInterface.hxx" class FGPanelInstrument; using namespace std; //////////////////////////////////////////////////////////////////////// // Texture management. //////////////////////////////////////////////////////////////////////// class FGCroppedTexture; typedef SGSharedPtr FGCroppedTexture_ptr; /** * Cropped texture (should migrate out into FGFS). * * This structure wraps an SSG texture with cropping information. */ class FGCroppedTexture : public SGReferenced { public: FGCroppedTexture (const string &path, float _minX = 0.0, float _minY = 0.0, float _maxX = 1.0, float _maxY = 1.0); virtual ~FGCroppedTexture (); virtual void setPath (const string &path) { _path = path; } virtual const string &getPath () const { return _path; } virtual void setCrop (float minX, float minY, float maxX, float maxY) { _minX = minX; _minY = minY; _maxX = maxX; _maxY = maxY; } static void registerTextureLoader( const string & extension, FGTextureLoaderInterface * loader ) { if( textureLoader.count( extension ) == 0 ) textureLoader[extension] = loader; } virtual float getMinX () const { return _minX; } virtual float getMinY () const { return _minY; } virtual float getMaxX () const { return _maxX; } virtual float getMaxY () const { return _maxY; } GLuint getTexture() const { return _texture; } virtual void bind( bool doGLBind = true ); private: string _path; float _minX, _minY, _maxX, _maxY; GLuint _texture; static GLuint current_bound_texture; static map cache; static map textureLoader; }; //////////////////////////////////////////////////////////////////////// // Top-level panel. //////////////////////////////////////////////////////////////////////// /** * Instrument panel class. * * The panel is a container that has a background texture and holds * zero or more instruments. The panel will order the instruments to * redraw themselves when necessary, and will pass mouse clicks on to * the appropriate instruments for processing. */ class FGPanel : public SGSubsystem { public: FGPanel ( SGPropertyNode_ptr root ); virtual ~FGPanel (); // Update the panel (every frame). virtual void init (); virtual void bind (); virtual void unbind (); // virtual void draw (); virtual void update (double dt); // transfer pointer ownership!!! virtual void addInstrument (FGPanelInstrument * instrument); // Background texture. virtual void setBackground (FGCroppedTexture_ptr texture); inline void setBackgroundWidth( double d ) { _bg_width = d; } inline void setBackgroundHeight( double d ) { _bg_height = d; } // Background multiple textures. virtual void setMultiBackground (FGCroppedTexture_ptr texture , int idx); // Full width of panel. virtual void setWidth (int width) { _width = width; } virtual int getWidth () const { return _width; } // Full height of panel. virtual void setHeight (int height) { _height = height; } virtual int getHeight () const { return _height; } private: typedef vector instrument_list_type; int _width; int _height; SGPropertyNode_ptr _root; SGPropertyNode_ptr _flipx; SGPropertyNode_ptr _rotate; FGCroppedTexture_ptr _bg; double _bg_width; double _bg_height; FGCroppedTexture_ptr _mbg[8]; // List of instruments in panel. instrument_list_type _instruments; GLuint initDisplayList; GLuint getInitDisplayList(); }; //////////////////////////////////////////////////////////////////////// // Transformations. //////////////////////////////////////////////////////////////////////// /** * A transformation for a layer. */ class FGPanelTransformation : public SGConditional { public: enum Type { XSHIFT, YSHIFT, ROTATION }; FGPanelTransformation (); virtual ~FGPanelTransformation (); Type type; SGConstPropertyNode_ptr node; float min; float max; bool has_mod; float mod; float factor; float offset; SGInterpTable * table; }; //////////////////////////////////////////////////////////////////////// // Layers //////////////////////////////////////////////////////////////////////// /** * A single layer of a multi-layered instrument. * * Each layer can be subject to a series of transformations based * on current FGFS instrument readings: for example, a texture * representing a needle can rotate to show the airspeed. */ class FGInstrumentLayer : public SGConditional { public: FGInstrumentLayer (int w = -1, int h = -1); virtual ~FGInstrumentLayer (); virtual void draw () = 0; virtual void transform () const; virtual int getWidth () const { return _w; } virtual int getHeight () const { return _h; } virtual void setWidth (int w) { _w = w; } virtual void setHeight (int h) { _h = h; } // Transfer pointer ownership!! // DEPRECATED virtual void addTransformation (FGPanelTransformation * transformation); protected: int _w, _h; typedef vector transformation_list; transformation_list _transformations; }; //////////////////////////////////////////////////////////////////////// // Instruments. //////////////////////////////////////////////////////////////////////// /** * Abstract base class for a panel instrument. * * A panel instrument consists of zero or more actions, associated * with mouse clicks in rectangular areas. Currently, the only * concrete class derived from this is FGLayeredInstrument, but others * may show up in the future (some complex instruments could be * entirely hand-coded, for example). */ class FGPanelInstrument : public SGConditional { public: FGPanelInstrument (); FGPanelInstrument (int x, int y, int w, int h); virtual ~FGPanelInstrument (); virtual void draw () = 0; virtual void setPosition(int x, int y); virtual void setSize(int w, int h); virtual int getXPos () const; virtual int getYPos () const; virtual int getWidth () const; virtual int getHeight () const; protected: int _x, _y, _w, _h; }; /** * An instrument constructed of multiple layers. * * Each individual layer can be rotated or shifted to correspond * to internal FGFS instrument readings. */ class FGLayeredInstrument : public FGPanelInstrument { public: FGLayeredInstrument (int x, int y, int w, int h); virtual ~FGLayeredInstrument (); virtual void draw (); // Transfer pointer ownership!! virtual int addLayer (FGInstrumentLayer *layer); virtual int addLayer (FGCroppedTexture_ptr texture, int w = -1, int h = -1); // Transfer pointer ownership!! virtual void addTransformation (FGPanelTransformation * transformation); protected: typedef vector layer_list; layer_list _layers; }; /** * An instrument layer containing a group of sublayers. * * This class is useful for gathering together a group of related * layers, either to hold in an external file or to work under * the same condition. */ class FGGroupLayer : public FGInstrumentLayer { public: FGGroupLayer (); virtual ~FGGroupLayer (); virtual void draw (); // transfer pointer ownership virtual void addLayer (FGInstrumentLayer * layer); protected: vector _layers; }; /** * A textured layer of an instrument. * * This is a layer holding a single texture. Normally, the texture's * backgound should be transparent so that lower layers and the panel * background can show through. */ class FGTexturedLayer : public FGInstrumentLayer { public: FGTexturedLayer (int w = -1, int h = -1) : FGInstrumentLayer(w, h) {} FGTexturedLayer (FGCroppedTexture_ptr texture, int w = -1, int h = -1); virtual ~FGTexturedLayer (); virtual void draw (); virtual void setTexture (FGCroppedTexture_ptr texture) { _texture = texture; } FGCroppedTexture_ptr getTexture() { return _texture; } void setEmissive(bool e) { _emissive = e; } private: GLuint getDisplayList(); FGCroppedTexture_ptr _texture; bool _emissive; GLuint displayList; }; /** * A text layer of an instrument. * * This is a layer holding a string of static and/or generated text. * It is useful for instruments that have text displays, such as * a chronometer, GPS, or NavCom radio. */ class FGTextLayer : public FGInstrumentLayer { public: enum ChunkType { TEXT, TEXT_VALUE, DOUBLE_VALUE }; class Chunk : public SGConditional { public: Chunk (const string &text, const string &fmt = "%s"); Chunk (ChunkType type, const SGPropertyNode * node, const string &fmt = "", float mult = 1.0, float offs = 0.0, bool truncation = false); const char * getValue () const; private: ChunkType _type; string _text; SGConstPropertyNode_ptr _node; string _fmt; float _mult; float _offs; bool _trunc; mutable char _buf[1024]; }; FGTextLayer (int w = -1, int h = -1); virtual ~FGTextLayer (); virtual void draw (); // Transfer pointer!! virtual void addChunk (Chunk * chunk); virtual void setColor (float r, float g, float b); virtual void setPointSize (float size); virtual void setFontName ( const string &name ); virtual void setFont (fntFont * font); private: void recalc_value () const; typedef vector chunk_list; chunk_list _chunks; float _color[4]; float _pointSize; mutable string _font_name; mutable string _value; mutable SGTimeStamp _then; mutable SGTimeStamp _now; static fntRenderer text_renderer; }; /** * A group layer that switches among its children. * * The first layer that passes its condition will be drawn, and * any following layers will be ignored. */ class FGSwitchLayer : public FGGroupLayer { public: // Transfer pointers!! FGSwitchLayer (); virtual void draw (); }; #endif // __PANEL_HXX // end of panel.hxx