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")) ),
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") );
61 SGPropertyNode* input = cprops->getChild("input", 0, true);
62 _mouse_x = input->getChild("mouse-x", 0, true);
63 _mouse_y = input->getChild("mouse-y", 0, true);
64 _mouse_down = input->getChild("mouse-down", 0, true);
65 _mouse_drag = input->getChild("mouse-drag", 0, true);
67 SGPropertyNode *nasal = props->getNode("nasal");
71 FGNasalSys *nas = dynamic_cast<FGNasalSys*>(globals->get_subsystem("nasal"));
75 "CanvasWidget: Failed to get nasal subsystem!" );
77 const std::string file = std::string("__canvas:")
78 + cprops->getStringValue("name");
80 SGPropertyNode *load = nasal->getNode("load");
83 const char *s = load->getStringValue();
84 nas->handleCommand(module.c_str(), file.c_str(), s, cprops);
88 //------------------------------------------------------------------------------
89 CanvasWidget::~CanvasWidget()
92 // TODO check if really not in use anymore
95 ->removeChild( _canvas->getProps()->getName(),
96 _canvas->getProps()->getIndex(),
100 // Old versions of PUI are missing this defines...
101 #ifndef PU_SCROLL_UP_BUTTON
102 # define PU_SCROLL_UP_BUTTON 3
104 #ifndef PU_SCROLL_DOWN_BUTTON
105 # define PU_SCROLL_DOWN_BUTTON 4
108 //------------------------------------------------------------------------------
109 void CanvasWidget::doHit(int button, int updown, int x, int y)
111 puObject::doHit(button, updown, x, y);
113 // CTRL allows resizing and SHIFT allows moving the window
114 if( fgGetKeyModifiers() & (KEYMOD_CTRL | KEYMOD_SHIFT) )
117 namespace sc = simgear::canvas;
118 sc::MouseEventPtr event(new sc::MouseEvent);
121 _time = globals->get_props()->getNode("/sim/time/elapsed-sec");
122 event->time = _time->getDoubleValue();
125 _view_height = globals->get_props()->getNode("/sim/gui/canvas/size[1]");
126 event->screen_pos.set(x, _view_height->getIntValue() - y);
128 event->client_pos.set(x - abox.min[0], abox.max[1] - y);
129 event->delta.set( event->getScreenX() - _last_x,
130 event->getScreenY() - _last_y );
132 _last_x = event->getScreenX();
133 _last_y = event->getScreenY();
138 event->button = osgGA::GUIEventAdapter::LEFT_MOUSE_BUTTON;
140 case PU_MIDDLE_BUTTON:
141 event->button = osgGA::GUIEventAdapter::MIDDLE_MOUSE_BUTTON;
143 case PU_RIGHT_BUTTON:
144 event->button = osgGA::GUIEventAdapter::RIGHT_MOUSE_BUTTON;
146 case PU_SCROLL_UP_BUTTON:
147 case PU_SCROLL_DOWN_BUTTON:
148 // Only let PU_DOWN trigger a scroll wheel event
149 if( updown != PU_DOWN )
152 event->type = sc::Event::WHEEL;
153 event->delta.y() = button == PU_SCROLL_UP_BUTTON ? 1 : -1;
155 _canvas->handleMouseEvent(event);
159 SG_LOG(SG_INPUT, SG_WARN, "CanvasWidget: Unknown button: " << button);
166 event->type = sc::Event::MOUSE_DOWN;
167 puSetActiveWidget(this, x, y);
170 event->type = sc::Event::MOUSE_UP;
171 puDeactivateWidget();
174 event->type = sc::Event::DRAG;
177 SG_LOG(SG_INPUT, SG_WARN, "CanvasWidget: Unknown updown: " << updown);
181 _canvas->handleMouseEvent(event);
183 _mouse_x->setIntValue(x - abox.min[0]);
184 _mouse_y->setIntValue(abox.max[1] - y);
186 if( updown == PU_DRAG )
187 _mouse_drag->setIntValue(button);
188 else if( updown == PU_DOWN )
189 _mouse_down->setIntValue(button);
192 //------------------------------------------------------------------------------
193 int CanvasWidget::checkKey(int key, int updown)
195 return puObject::checkKey(key, updown);
198 //------------------------------------------------------------------------------
199 void CanvasWidget::setSize(int w, int h)
201 puObject::setSize(w, h);
203 _canvas->getProps()->setIntValue("view[0]", w);
204 _canvas->getProps()->setIntValue("view[1]", h);
207 //------------------------------------------------------------------------------
208 void CanvasWidget::draw(int dx, int dy)
212 _tex_id = _canvas_mgr->getCanvasTexId( _canvas->getProps()->getIndex() );
214 // Normally we should be able to get the texture after one frame. I don't
215 // know if there are circumstances where it can take longer, so we don't
216 // log a warning message until we have tried a few times.
219 if( ++_no_tex_cnt == 5 )
220 SG_LOG(SG_GENERAL, SG_WARN, "CanvasWidget: failed to get texture!");
225 if( _no_tex_cnt >= 5 )
230 "CanvasWidget: got texture after " << _no_tex_cnt << " tries."
236 glEnable(GL_TEXTURE_2D);
237 glBindTexture(GL_TEXTURE_2D, _tex_id);
240 glTexCoord2f(0,0); glVertex2f(dx + abox.min[0], dy + abox.min[1]);
241 glTexCoord2f(1,0); glVertex2f(dx + abox.max[0], dy + abox.min[1]);
242 glTexCoord2f(1,1); glVertex2f(dx + abox.max[0], dy + abox.max[1]);
243 glTexCoord2f(0,1); glVertex2f(dx + abox.min[0], dy + abox.max[1]);
245 glDisable(GL_TEXTURE_2D);