4 * Created on: 03.07.2012
12 #include "CanvasWidget.hxx"
14 #include <Canvas/canvas_mgr.hxx>
15 #include <Main/fg_os.hxx> // fgGetKeyModifiers()
16 #include <Scripting/NasalSys.hxx>
18 #include <simgear/canvas/Canvas.hxx>
19 #include <simgear/canvas/MouseEvent.hxx>
21 SGPropertyNode_ptr CanvasWidget::_time,
22 CanvasWidget::_view_height;
24 //------------------------------------------------------------------------------
25 CanvasWidget::CanvasWidget( int x, int y,
26 int width, int height,
27 SGPropertyNode* props,
28 const std::string& module ):
29 puObject(x, y, width, height),
30 _canvas_mgr( dynamic_cast<CanvasMgr*>(globals->get_subsystem("Canvas")) ),
33 // automatically resize viewport of canvas if no size is given
34 _auto_viewport( !props->hasChild("view") )
38 SG_LOG(SG_GENERAL, SG_ALERT, "CanvasWidget: failed to get canvas manager!");
42 _canvas = _canvas_mgr->createCanvas
44 props->getStringValue("name", "gui-anonymous")
48 // Get canvas viewport size. If not specified use the widget dimensions
49 props->getIntValue("view[0]", width),
50 props->getIntValue("view[1]", height)
53 SGPropertyNode* cprops = _canvas->getProps();
54 cprops->setIntValue("size[0]", view[0] * 2); // use higher resolution
55 cprops->setIntValue("size[1]", view[1] * 2); // for antialias
56 cprops->setIntValue("view[0]", view[0]);
57 cprops->setIntValue("view[1]", view[1]);
58 cprops->setBoolValue("render-always", true);
59 cprops->setStringValue( "name",
60 props->getStringValue("name", "gui-anonymous") );
62 SGPropertyNode *nasal = props->getNode("nasal");
66 FGNasalSys *nas = dynamic_cast<FGNasalSys*>(globals->get_subsystem("nasal"));
70 "CanvasWidget: Failed to get nasal subsystem!" );
72 const std::string file = std::string("__canvas:")
73 + cprops->getStringValue("name");
75 SGPropertyNode *load = nasal->getNode("load");
78 const char *s = load->getStringValue();
79 nas->handleCommand(module.c_str(), file.c_str(), s, cprops);
83 //------------------------------------------------------------------------------
84 CanvasWidget::~CanvasWidget()
87 // TODO check if really not in use anymore
90 ->removeChild( _canvas->getProps()->getName(),
91 _canvas->getProps()->getIndex(),
95 // Old versions of PUI are missing this defines...
96 #ifndef PU_SCROLL_UP_BUTTON
97 # define PU_SCROLL_UP_BUTTON 3
99 #ifndef PU_SCROLL_DOWN_BUTTON
100 # define PU_SCROLL_DOWN_BUTTON 4
103 //------------------------------------------------------------------------------
104 void CanvasWidget::doHit(int button, int updown, int x, int y)
106 puObject::doHit(button, updown, x, y);
108 // CTRL allows resizing and SHIFT allows moving the window
109 if( fgGetKeyModifiers() & (KEYMOD_CTRL | KEYMOD_SHIFT) )
112 namespace sc = simgear::canvas;
113 sc::MouseEventPtr event(new sc::MouseEvent);
116 _time = globals->get_props()->getNode("/sim/time/elapsed-sec");
117 event->time = _time->getDoubleValue();
120 _view_height = globals->get_props()->getNode("/sim/gui/canvas/size[1]");
121 event->screen_pos.set(x, _view_height->getIntValue() - y);
123 event->client_pos.set(x - abox.min[0], abox.max[1] - y);
124 event->delta.set( event->getScreenX() - _last_x,
125 event->getScreenY() - _last_y );
127 _last_x = event->getScreenX();
128 _last_y = event->getScreenY();
133 event->button = osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON;
135 case PU_MIDDLE_BUTTON:
136 event->button = osgGA::GUIEventAdapter::MIDDLE_MOUSE_BUTTON;
138 case PU_RIGHT_BUTTON:
139 event->button = osgGA::GUIEventAdapter::RIGHT_MOUSE_BUTTON;
141 case PU_SCROLL_UP_BUTTON:
142 case PU_SCROLL_DOWN_BUTTON:
143 // Only let PU_DOWN trigger a scroll wheel event
144 if( updown != PU_DOWN )
147 event->type = sc::Event::WHEEL;
148 event->delta.y() = button == PU_SCROLL_UP_BUTTON ? 1 : -1;
150 _canvas->handleMouseEvent(event);
154 SG_LOG(SG_INPUT, SG_WARN, "CanvasWidget: Unknown button: " << button);
161 event->type = sc::Event::MOUSE_DOWN;
162 puSetActiveWidget(this, x, y);
165 event->type = sc::Event::MOUSE_UP;
166 puDeactivateWidget();
169 event->type = sc::Event::DRAG;
172 SG_LOG(SG_INPUT, SG_WARN, "CanvasWidget: Unknown updown: " << updown);
176 _canvas->handleMouseEvent(event);
179 //------------------------------------------------------------------------------
180 int CanvasWidget::checkKey(int key, int updown)
182 return puObject::checkKey(key, updown);
185 //------------------------------------------------------------------------------
186 void CanvasWidget::setSize(int w, int h)
188 puObject::setSize(w, h);
192 _canvas->getProps()->setIntValue("view[0]", w);
193 _canvas->getProps()->setIntValue("view[1]", h);
197 //------------------------------------------------------------------------------
198 void CanvasWidget::draw(int dx, int dy)
200 glEnable(GL_TEXTURE_2D);
201 glBindTexture(GL_TEXTURE_2D, _canvas_mgr->getCanvasTexId(_canvas));
204 glTexCoord2f(0,0); glVertex2f(dx + abox.min[0], dy + abox.min[1]);
205 glTexCoord2f(1,0); glVertex2f(dx + abox.max[0], dy + abox.min[1]);
206 glTexCoord2f(1,1); glVertex2f(dx + abox.max[0], dy + abox.max[1]);
207 glTexCoord2f(0,1); glVertex2f(dx + abox.min[0], dy + abox.max[1]);
209 glDisable(GL_TEXTURE_2D);