1 // panel.hxx - generic support classes for a 2D panel.
3 // Written by David Megginson, started January 2000.
5 // This program is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License as
7 // published by the Free Software Foundation; either version 2 of the
8 // License, or (at your option) any later version.
10 // This program is distributed in the hope that it will be useful, but
11 // WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program; if not, write to the Free Software
17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24 #include <osg/ref_ptr>
25 #include <osg/StateSet>
26 #include <osg/Texture2D>
28 #include <simgear/compiler.h>
29 #include <simgear/props/props.hxx>
30 #include <simgear/props/propertyObject.hxx>
32 #include <simgear/structure/subsystem_mgr.hxx>
33 #include <simgear/structure/SGBinding.hxx>
34 #include <simgear/math/interpolater.hxx>
35 #include <simgear/timing/timestamp.hxx>
41 #include <Main/fg_props.hxx>
43 class FGPanelInstrument;
48 ////////////////////////////////////////////////////////////////////////
49 // Texture management.
50 ////////////////////////////////////////////////////////////////////////
54 * Texture manager (should migrate out into FGFS).
56 * This class ensures that no texture is loaded more than once.
58 class FGTextureManager
61 static osg::Texture2D* createTexture(const std::string &relativePath,
62 bool staticTexture = true);
63 static void addTexture(const std::string &relativePath, osg::Texture2D* texture);
65 static std::map<std::string,osg::ref_ptr<osg::Texture2D> > _textureMap;
70 * Cropped texture (should migrate out into FGFS).
72 * This structure wraps an SSG texture with cropping information.
74 class FGCroppedTexture
79 FGCroppedTexture (const std::string &path,
80 float _minX = 0.0, float _minY = 0.0,
81 float _maxX = 1.0, float _maxY = 1.0);
82 virtual ~FGCroppedTexture ();
84 virtual void setPath (const std::string &path) { _path = path; }
86 virtual const std::string &getPath () const { return _path; }
88 virtual osg::StateSet* getTexture ();
90 virtual void setCrop (float minX, float minY, float maxX, float maxY) {
91 _minX = minX; _minY = minY; _maxX = maxX; _maxY = maxY;
94 virtual float getMinX () const { return _minX; }
95 virtual float getMinY () const { return _minY; }
96 virtual float getMaxX () const { return _maxX; }
97 virtual float getMaxY () const { return _maxY; }
102 osg::ref_ptr<osg::StateSet> _texture;
103 float _minX, _minY, _maxX, _maxY;
108 ////////////////////////////////////////////////////////////////////////
110 ////////////////////////////////////////////////////////////////////////
114 * Instrument panel class.
116 * The panel is a container that has a background texture and holds
117 * zero or more instruments. The panel will order the instruments to
118 * redraw themselves when necessary, and will pass mouse clicks on to
119 * the appropriate instruments for processing.
121 class FGPanel : public SGSubsystem
128 // Update the panel (every frame).
129 virtual void init ();
130 virtual void bind ();
131 virtual void unbind ();
132 virtual void draw (osg::State& state);
133 virtual void update (double);
135 //void update (osg::State& state);
136 //virtual void update (osg::State& state, GLfloat winx, GLfloat winw, GLfloat winy, GLfloat winh);
138 virtual void updateMouseDelay();
140 // transfer pointer ownership!!!
141 virtual void addInstrument (FGPanelInstrument * instrument);
143 // Background texture.
144 virtual void setBackground (osg::Texture2D* texture);
146 // Background multiple textures.
147 virtual void setMultiBackground (osg::Texture2D* texture, int idx);
149 // Make the panel visible or invisible.
150 virtual bool getVisibility () const;
151 virtual void setVisibility (bool visibility);
153 // Full width of panel.
154 virtual void setWidth (int width) { _width = width; }
155 virtual int getWidth () const { return _width; }
157 // Full height of panel.
158 virtual void setHeight (int height) { _height = height; }
159 virtual int getHeight () const { return _height; }
162 virtual void setXOffset (int offset);
163 virtual int getXOffset () const { return _x_offset->getIntValue(); }
166 virtual void setYOffset (int offset);
167 virtual int getYOffset () const { return _y_offset->getIntValue(); }
170 // virtual void setViewHeight (int height) { _view_height = height; }
171 // virtual int getViewHeight () const { return _view_height; }
174 * find the actual logical extend of the panel, including all instruments
177 void getLogicalExtent(int &x0, int& y0, int& x1, int &y1);
179 // Handle a mouse click.
180 virtual bool doMouseAction (int button, int updown, int x, int y);
181 virtual bool doLocalMouseAction(int button, int updown, int x, int y);
183 virtual void setDepthTest (bool enable);
185 bool getAutohide(void) const { return _autohide; };
186 void setAutohide(bool enable) { _autohide = enable; };
188 double getAspectScale() const;
191 void setupVirtualCockpit();
192 void cleanupVirtualCockpit();
194 mutable bool _mouseDown;
195 mutable int _mouseButton, _mouseX, _mouseY;
196 mutable int _mouseDelay;
197 mutable FGPanelInstrument * _mouseInstrument;
198 typedef std::vector<FGPanelInstrument *> instrument_list_type;
203 SGPropertyNode_ptr _visibility;
204 SGPropertyNode_ptr _x_offset;
205 SGPropertyNode_ptr _y_offset;
206 SGPropertyNode_ptr _jitter;
207 SGPropertyNode_ptr _flipx;
209 SGConstPropertyNode_ptr _xsize_node;
210 SGConstPropertyNode_ptr _ysize_node;
212 osg::ref_ptr<osg::StateSet> _bg;
213 osg::ref_ptr<osg::StateSet> _mbg[8];
214 // List of instruments in panel.
215 instrument_list_type _instruments;
216 bool _enable_depth_test;
219 SGPropObjBool _drawPanelHotspots;
224 ////////////////////////////////////////////////////////////////////////
226 ////////////////////////////////////////////////////////////////////////
230 * Class for user actions.
232 * The actions are command bindings, like bindings for the keyboard
233 * or joystick, but they are tied to specific mouse actions in
234 * rectangular areas of the panel.
236 class FGPanelAction : public SGConditional
240 FGPanelAction (int button, int x, int y, int w, int h, bool repeatable);
241 virtual ~FGPanelAction ();
244 virtual int getButton () const { return _button; }
245 virtual int getX () const { return _x; }
246 virtual int getY () const { return _y; }
247 virtual int getWidth () const { return _w; }
248 virtual int getHeight () const { return _h; }
252 // transfer pointer ownership
253 virtual void addBinding (SGBinding * binding, int updown);
254 virtual void setButton (int button) { _button = button; }
255 virtual void setX (int x) { _x = x; }
256 virtual void setY (int y) { _y = y; }
257 virtual void setWidth (int w) { _w = w; }
258 virtual void setHeight (int h) { _h = h; }
260 // Check whether we're in the area.
261 virtual bool inArea (int button, int x, int y)
263 return (button == _button &&
270 // Perform the action.
271 virtual bool doAction (int updown);
274 typedef std::vector<SGBinding *> binding_list_t;
283 binding_list_t _bindings[2];
288 ////////////////////////////////////////////////////////////////////////
290 ////////////////////////////////////////////////////////////////////////
294 * A transformation for a layer.
296 class FGPanelTransformation : public SGConditional
306 FGPanelTransformation ();
307 virtual ~FGPanelTransformation ();
310 SGConstPropertyNode_ptr node;
317 SGInterpTable * table;
323 ////////////////////////////////////////////////////////////////////////
325 ////////////////////////////////////////////////////////////////////////
329 * A single layer of a multi-layered instrument.
331 * Each layer can be subject to a series of transformations based
332 * on current FGFS instrument readings: for example, a texture
333 * representing a needle can rotate to show the airspeed.
335 class FGInstrumentLayer : public SGConditional
339 FGInstrumentLayer (int w = -1, int h = -1);
340 virtual ~FGInstrumentLayer ();
342 virtual void draw (osg::State& state) = 0;
343 virtual void transform () const;
345 virtual int getWidth () const { return _w; }
346 virtual int getHeight () const { return _h; }
347 virtual void setWidth (int w) { _w = w; }
348 virtual void setHeight (int h) { _h = h; }
350 // Transfer pointer ownership!!
352 virtual void addTransformation (FGPanelTransformation * transformation);
357 typedef std::vector<FGPanelTransformation *> transformation_list;
358 transformation_list _transformations;
363 ////////////////////////////////////////////////////////////////////////
365 ////////////////////////////////////////////////////////////////////////
369 * Abstract base class for a panel instrument.
371 * A panel instrument consists of zero or more actions, associated
372 * with mouse clicks in rectangular areas. Currently, the only
373 * concrete class derived from this is FGLayeredInstrument, but others
374 * may show up in the future (some complex instruments could be
375 * entirely hand-coded, for example).
377 class FGPanelInstrument : public SGConditional
380 FGPanelInstrument ();
381 FGPanelInstrument (int x, int y, int w, int h);
382 virtual ~FGPanelInstrument ();
384 virtual void draw (osg::State& state) = 0;
385 virtual void drawHotspots(osg::State& state);
387 virtual void setPosition(int x, int y);
388 virtual void setSize(int w, int h);
390 virtual int getXPos () const;
391 virtual int getYPos () const;
392 virtual int getWidth () const;
393 virtual int getHeight () const;
395 // Coordinates relative to centre.
396 // Transfer pointer ownership!!
397 virtual void addAction (FGPanelAction * action);
399 // Coordinates relative to centre.
400 virtual bool doMouseAction (int button, int updown, int x, int y);
402 void extendRect(IntRect& r) const;
405 typedef std::vector<FGPanelAction *> action_list_type;
406 action_list_type _actions;
411 * An instrument constructed of multiple layers.
413 * Each individual layer can be rotated or shifted to correspond
414 * to internal FGFS instrument readings.
416 class FGLayeredInstrument : public FGPanelInstrument
419 FGLayeredInstrument (int x, int y, int w, int h);
420 virtual ~FGLayeredInstrument ();
422 virtual void draw (osg::State& state);
424 // Transfer pointer ownership!!
425 virtual int addLayer (FGInstrumentLayer *layer);
426 virtual int addLayer (const FGCroppedTexture &texture, int w = -1, int h = -1);
428 // Transfer pointer ownership!!
429 virtual void addTransformation (FGPanelTransformation * transformation);
432 typedef std::vector<FGInstrumentLayer *> layer_list;
438 * An empty-shell instrument that exists soley in
439 * order to redirect commands from the panel to a
440 * complex instrument inherited from SGSubsystem.
442 * Currently the only complex instrument is the KLN89,
443 * which we've hardwired this to for now.
445 class FGSpecialInstrument : public FGPanelInstrument
448 FGSpecialInstrument(DCLGPS* sb);
449 //FGSpecialInstrument (int x, int y, int w, int h);
450 virtual ~FGSpecialInstrument ();
452 virtual void draw (osg::State& state);
460 * An instrument layer containing a group of sublayers.
462 * This class is useful for gathering together a group of related
463 * layers, either to hold in an external file or to work under
464 * the same condition.
466 class FGGroupLayer : public FGInstrumentLayer
470 virtual ~FGGroupLayer ();
471 virtual void draw (osg::State& state);
472 // transfer pointer ownership
473 virtual void addLayer (FGInstrumentLayer * layer);
475 std::vector<FGInstrumentLayer *> _layers;
480 * A textured layer of an instrument.
482 * This is a layer holding a single texture. Normally, the texture's
483 * backgound should be transparent so that lower layers and the panel
484 * background can show through.
486 class FGTexturedLayer : public FGInstrumentLayer
489 FGTexturedLayer (int w = -1, int h = -1) : FGInstrumentLayer(w, h) {}
490 FGTexturedLayer (const FGCroppedTexture &texture, int w = -1, int h = -1);
491 virtual ~FGTexturedLayer ();
493 virtual void draw (osg::State& state);
495 virtual void setTexture (const FGCroppedTexture &texture) {
498 virtual const FGCroppedTexture &getTexture () const { return _texture; }
499 virtual FGCroppedTexture *getTexture() { return &_texture; }
501 void setEmissive(bool e) { _emissive = e; }
504 FGCroppedTexture _texture;
510 * A text layer of an instrument.
512 * This is a layer holding a string of static and/or generated text.
513 * It is useful for instruments that have text displays, such as
514 * a chronometer, GPS, or NavCom radio.
516 class FGTextLayer : public FGInstrumentLayer
525 class Chunk : public SGConditional
528 Chunk (const std::string &text, const std::string &fmt = "%s");
529 Chunk (ChunkType type, const SGPropertyNode * node,
530 const std::string &fmt = "", float mult = 1.0, float offs = 0.0,
531 bool truncation = false);
533 const char * getValue () const;
537 SGConstPropertyNode_ptr _node;
542 mutable char _buf[1024];
545 FGTextLayer (int w = -1, int h = -1);
546 virtual ~FGTextLayer ();
548 virtual void draw (osg::State& state);
550 // Transfer pointer!!
551 virtual void addChunk (Chunk * chunk);
552 virtual void setColor (float r, float g, float b);
553 virtual void setPointSize (float size);
554 virtual void setFontName ( const std::string &name );
555 virtual void setFont (fntFont * font);
559 void recalc_value () const;
561 typedef std::vector<Chunk *> chunk_list;
566 mutable std::string _font_name;
567 mutable std::string _value;
568 mutable SGTimeStamp _then;
569 mutable SGTimeStamp _now;
574 * A group layer that switches among its children.
576 * The first layer that passes its condition will be drawn, and
577 * any following layers will be ignored.
579 class FGSwitchLayer : public FGGroupLayer
582 // Transfer pointers!!
584 virtual void draw (osg::State& state);
591 ////////////////////////////////////////////////////////////////////////
593 ////////////////////////////////////////////////////////////////////////
596 * Test whether the panel should be visible.
598 bool fgPanelVisible ();
602 #endif // __PANEL_HXX