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")) ),
36 SG_LOG(SG_GENERAL, SG_ALERT, "CanvasWidget: failed to get canvas manager!");
40 _canvas = _canvas_mgr->createCanvas
42 props->getStringValue("name", "gui-anonymous")
46 // Get canvas viewport size. If not specified use the widget dimensions
47 props->getIntValue("view[0]", width),
48 props->getIntValue("view[1]", height)
51 SGPropertyNode* cprops = _canvas->getProps();
52 cprops->setIntValue("size[0]", view[0] * 2); // use higher resolution
53 cprops->setIntValue("size[1]", view[1] * 2); // for antialias
54 cprops->setIntValue("view[0]", view[0]);
55 cprops->setIntValue("view[1]", view[1]);
56 cprops->setBoolValue("render-always", true);
57 cprops->setStringValue( "name",
58 props->getStringValue("name", "gui-anonymous") );
60 SGPropertyNode *nasal = props->getNode("nasal");
64 FGNasalSys *nas = dynamic_cast<FGNasalSys*>(globals->get_subsystem("nasal"));
68 "CanvasWidget: Failed to get nasal subsystem!" );
70 const std::string file = std::string("__canvas:")
71 + cprops->getStringValue("name");
73 SGPropertyNode *load = nasal->getNode("load");
76 const char *s = load->getStringValue();
77 nas->handleCommand(module.c_str(), file.c_str(), s, cprops);
81 //------------------------------------------------------------------------------
82 CanvasWidget::~CanvasWidget()
85 // TODO check if really not in use anymore
88 ->removeChild( _canvas->getProps()->getName(),
89 _canvas->getProps()->getIndex(),
93 // Old versions of PUI are missing this defines...
94 #ifndef PU_SCROLL_UP_BUTTON
95 # define PU_SCROLL_UP_BUTTON 3
97 #ifndef PU_SCROLL_DOWN_BUTTON
98 # define PU_SCROLL_DOWN_BUTTON 4
101 //------------------------------------------------------------------------------
102 void CanvasWidget::doHit(int button, int updown, int x, int y)
104 puObject::doHit(button, updown, x, y);
106 // CTRL allows resizing and SHIFT allows moving the window
107 if( fgGetKeyModifiers() & (KEYMOD_CTRL | KEYMOD_SHIFT) )
110 namespace sc = simgear::canvas;
111 sc::MouseEventPtr event(new sc::MouseEvent);
114 _time = globals->get_props()->getNode("/sim/time/elapsed-sec");
115 event->time = _time->getDoubleValue();
118 _view_height = globals->get_props()->getNode("/sim/gui/canvas/size[1]");
119 event->screen_pos.set(x, _view_height->getIntValue() - y);
121 event->client_pos.set(x - abox.min[0], abox.max[1] - y);
122 event->delta.set( event->getScreenX() - _last_x,
123 event->getScreenY() - _last_y );
125 _last_x = event->getScreenX();
126 _last_y = event->getScreenY();
131 event->button = osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON;
133 case PU_MIDDLE_BUTTON:
134 event->button = osgGA::GUIEventAdapter::MIDDLE_MOUSE_BUTTON;
136 case PU_RIGHT_BUTTON:
137 event->button = osgGA::GUIEventAdapter::RIGHT_MOUSE_BUTTON;
139 case PU_SCROLL_UP_BUTTON:
140 case PU_SCROLL_DOWN_BUTTON:
141 // Only let PU_DOWN trigger a scroll wheel event
142 if( updown != PU_DOWN )
145 event->type = sc::Event::WHEEL;
146 event->delta.y() = button == PU_SCROLL_UP_BUTTON ? 1 : -1;
148 _canvas->handleMouseEvent(event);
152 SG_LOG(SG_INPUT, SG_WARN, "CanvasWidget: Unknown button: " << button);
159 event->type = sc::Event::MOUSE_DOWN;
160 puSetActiveWidget(this, x, y);
163 event->type = sc::Event::MOUSE_UP;
164 puDeactivateWidget();
167 event->type = sc::Event::DRAG;
170 SG_LOG(SG_INPUT, SG_WARN, "CanvasWidget: Unknown updown: " << updown);
174 _canvas->handleMouseEvent(event);
177 //------------------------------------------------------------------------------
178 int CanvasWidget::checkKey(int key, int updown)
180 return puObject::checkKey(key, updown);
183 //------------------------------------------------------------------------------
184 void CanvasWidget::setSize(int w, int h)
186 puObject::setSize(w, h);
188 _canvas->getProps()->setIntValue("view[0]", w);
189 _canvas->getProps()->setIntValue("view[1]", h);
192 //------------------------------------------------------------------------------
193 void CanvasWidget::draw(int dx, int dy)
195 glEnable(GL_TEXTURE_2D);
196 glBindTexture(GL_TEXTURE_2D, _canvas_mgr->getCanvasTexId(_canvas));
199 glTexCoord2f(0,0); glVertex2f(dx + abox.min[0], dy + abox.min[1]);
200 glTexCoord2f(1,0); glVertex2f(dx + abox.max[0], dy + abox.min[1]);
201 glTexCoord2f(1,1); glVertex2f(dx + abox.max[0], dy + abox.max[1]);
202 glTexCoord2f(0,1); glVertex2f(dx + abox.min[0], dy + abox.max[1]);
204 glDisable(GL_TEXTURE_2D);