1 // NasalCanvas.cxx -- expose Canvas classes to Nasal
3 // Written by James Turner, started 2012.
5 // Copyright (C) 2012 James Turner
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
25 #include "NasalCanvas.hxx"
26 #include <Canvas/canvas_mgr.hxx>
27 #include <Canvas/gui_mgr.hxx>
28 #include <Main/globals.hxx>
29 #include <Scripting/NasalSys.hxx>
31 #include <osgGA/GUIEventAdapter>
33 #include <simgear/sg_inlines.h>
35 #include <simgear/canvas/Canvas.hxx>
36 #include <simgear/canvas/CanvasWindow.hxx>
37 #include <simgear/canvas/elements/CanvasElement.hxx>
38 #include <simgear/canvas/elements/CanvasText.hxx>
39 #include <simgear/canvas/events/CustomEvent.hxx>
40 #include <simgear/canvas/events/MouseEvent.hxx>
42 #include <simgear/nasal/cppbind/from_nasal.hxx>
43 #include <simgear/nasal/cppbind/to_nasal.hxx>
44 #include <simgear/nasal/cppbind/NasalHash.hxx>
45 #include <simgear/nasal/cppbind/Ghost.hxx>
47 extern naRef propNodeGhostCreate(naContext c, SGPropertyNode* n);
49 namespace sc = simgear::canvas;
51 template<class Element>
52 naRef elementGetNode(Element& element, naContext c)
54 return propNodeGhostCreate(c, element.getProps());
57 typedef nasal::Ghost<sc::EventPtr> NasalEvent;
58 typedef nasal::Ghost<sc::CustomEventPtr> NasalCustomEvent;
59 typedef nasal::Ghost<sc::MouseEventPtr> NasalMouseEvent;
61 struct CustomEventDetailWrapper;
62 typedef SGSharedPtr<CustomEventDetailWrapper> CustomEventDetailPtr;
63 typedef nasal::Ghost<CustomEventDetailPtr> NasalCustomEventDetail;
65 typedef nasal::Ghost<sc::CanvasPtr> NasalCanvas;
66 typedef nasal::Ghost<sc::ElementPtr> NasalElement;
67 typedef nasal::Ghost<sc::GroupPtr> NasalGroup;
68 typedef nasal::Ghost<sc::TextPtr> NasalText;
69 typedef nasal::Ghost<sc::WindowWeakPtr> NasalWindow;
71 naRef to_nasal_helper(naContext c, const osg::BoundingBox& bb)
73 std::vector<float> bb_vec(4);
74 bb_vec[0] = bb._min.x();
75 bb_vec[1] = bb._min.y();
76 bb_vec[2] = bb._max.x();
77 bb_vec[3] = bb._max.y();
79 return nasal::to_nasal(c, bb_vec);
82 SGPropertyNode* from_nasal_helper(naContext c, naRef ref, SGPropertyNode**)
84 SGPropertyNode* props = ghostToPropNode(ref);
86 naRuntimeError(c, "Not a SGPropertyNode ghost.");
91 CanvasMgr& requireCanvasMgr(naContext c)
93 CanvasMgr* canvas_mgr =
94 static_cast<CanvasMgr*>(globals->get_subsystem("Canvas"));
96 naRuntimeError(c, "Failed to get Canvas subsystem");
101 GUIMgr& requireGUIMgr(naContext c)
104 static_cast<GUIMgr*>(globals->get_subsystem("CanvasGUI"));
106 naRuntimeError(c, "Failed to get CanvasGUI subsystem");
112 * Create new Canvas and get ghost for it.
114 static naRef f_createCanvas(const nasal::CallContext& ctx)
116 return NasalCanvas::create(ctx.c, requireCanvasMgr(ctx.c).createCanvas());
120 * Create new Window and get ghost for it.
122 static naRef f_createWindow(const nasal::CallContext& ctx)
124 return NasalWindow::create
127 requireGUIMgr(ctx.c).createWindow( ctx.getArg<std::string>(0) )
132 * Get ghost for existing Canvas.
134 static naRef f_getCanvas(naContext c, naRef me, int argc, naRef* args)
136 nasal::CallContext ctx(c, argc, args);
137 SGPropertyNode& props = *ctx.requireArg<SGPropertyNode*>(0);
138 CanvasMgr& canvas_mgr = requireCanvasMgr(c);
140 sc::CanvasPtr canvas;
141 if( canvas_mgr.getPropertyRoot() == props.getParent() )
143 // get a canvas specified by its root node
144 canvas = canvas_mgr.getCanvas( props.getIndex() );
145 if( !canvas || canvas->getProps() != &props )
150 // get a canvas by name
151 if( props.hasValue("name") )
152 canvas = canvas_mgr.getCanvas( props.getStringValue("name") );
153 else if( props.hasValue("index") )
154 canvas = canvas_mgr.getCanvas( props.getIntValue("index") );
157 return NasalCanvas::create(c, canvas);
160 naRef f_canvasCreateGroup(sc::Canvas& canvas, const nasal::CallContext& ctx)
162 return NasalGroup::create
165 canvas.createGroup( ctx.getArg<std::string>(0) )
170 * Get group containing all gui windows
172 naRef f_getDesktop(naContext c, naRef me, int argc, naRef* args)
174 return NasalGroup::create(c, requireGUIMgr(c).getDesktop());
177 naRef f_groupCreateChild(sc::Group& group, const nasal::CallContext& ctx)
179 return NasalElement::create
182 group.createChild( ctx.requireArg<std::string>(0),
183 ctx.getArg<std::string>(1) )
187 naRef f_groupGetChild(sc::Group& group, const nasal::CallContext& ctx)
189 return NasalElement::create
192 group.getChild( ctx.requireArg<SGPropertyNode*>(0) )
196 naRef f_groupGetElementById(sc::Group& group, const nasal::CallContext& ctx)
198 return NasalElement::create
201 group.getElementById( ctx.requireArg<std::string>(0) )
206 naRef f_eventGetModifier(sc::MouseEvent& event, naContext)
208 return naNum((event.getModifiers() & Mask) != 0);
211 static naRef f_createCustomEvent(const nasal::CallContext& ctx)
213 std::string const& type = ctx.requireArg<std::string>(0);
217 simgear::StringMap data = ctx.getArg<simgear::StringMap>(1);
218 return NasalCustomEvent::create(
220 sc::CustomEventPtr(new sc::CustomEvent(type, data))
224 struct CustomEventDetailWrapper:
227 sc::CustomEventPtr _event;
229 CustomEventDetailWrapper(const sc::CustomEventPtr& event):
235 bool _get( const std::string& key,
236 std::string& value_out ) const
241 simgear::StringMap::const_iterator it = _event->detail.find(key);
242 if( it == _event->detail.end() )
245 value_out = it->second;
249 bool _set( const std::string& key,
250 const std::string& value )
255 _event->detail[ key ] = value;
260 static naRef f_customEventGetDetail( sc::CustomEvent& event,
263 return nasal::to_nasal(
265 CustomEventDetailPtr(new CustomEventDetailWrapper(&event))
269 naRef to_nasal_helper(naContext c, const sc::ElementWeakPtr& el)
271 return NasalElement::create(c, el.lock());
274 naRef initNasalCanvas(naRef globals, naContext c)
276 using osgGA::GUIEventAdapter;
277 NasalEvent::init("canvas.Event")
278 .member("type", &sc::Event::getTypeString)
279 .member("target", &sc::Event::getTarget)
280 .member("currentTarget", &sc::Event::getCurrentTarget)
281 .method("stopPropagation", &sc::Event::stopPropagation);
283 NasalCustomEvent::init("canvas.CustomEvent")
285 .member("detail", &f_customEventGetDetail, &sc::CustomEvent::setDetail);
286 NasalCustomEventDetail::init("canvas.CustomEventDetail")
287 ._get(&CustomEventDetailWrapper::_get)
288 ._set(&CustomEventDetailWrapper::_set);
290 NasalMouseEvent::init("canvas.MouseEvent")
292 .member("screenX", &sc::MouseEvent::getScreenX)
293 .member("screenY", &sc::MouseEvent::getScreenY)
294 .member("clientX", &sc::MouseEvent::getClientX)
295 .member("clientY", &sc::MouseEvent::getClientY)
296 .member("localX", &sc::MouseEvent::getLocalX)
297 .member("localY", &sc::MouseEvent::getLocalY)
298 .member("deltaX", &sc::MouseEvent::getDeltaX)
299 .member("deltaY", &sc::MouseEvent::getDeltaY)
300 .member("button", &sc::MouseEvent::getButton)
301 .member("buttons", &sc::MouseEvent::getButtonMask)
302 .member("modifiers", &sc::MouseEvent::getModifiers)
303 .member("ctrlKey", &f_eventGetModifier<GUIEventAdapter::MODKEY_CTRL>)
304 .member("shiftKey", &f_eventGetModifier<GUIEventAdapter::MODKEY_SHIFT>)
305 .member("altKey", &f_eventGetModifier<GUIEventAdapter::MODKEY_ALT>)
306 .member("metaKey", &f_eventGetModifier<GUIEventAdapter::MODKEY_META>)
307 .member("click_count", &sc::MouseEvent::getCurrentClickCount);
309 NasalCanvas::init("Canvas")
310 .member("_node_ghost", &elementGetNode<sc::Canvas>)
311 .member("size_x", &sc::Canvas::getSizeX)
312 .member("size_y", &sc::Canvas::getSizeY)
313 .method("_createGroup", &f_canvasCreateGroup)
314 .method("_getGroup", &sc::Canvas::getGroup)
315 .method("addEventListener", &sc::Canvas::addEventListener);
316 NasalElement::init("canvas.Element")
317 .member("_node_ghost", &elementGetNode<sc::Element>)
318 .method("_getParent", &sc::Element::getParent)
319 .method("addEventListener", &sc::Element::addEventListener)
320 .method("dispatchEvent", &sc::Element::dispatchEvent)
321 .method("getBoundingBox", &sc::Element::getBoundingBox)
322 .method("getTightBoundingBox", &sc::Element::getTightBoundingBox);
323 NasalGroup::init("canvas.Group")
324 .bases<NasalElement>()
325 .method("_createChild", &f_groupCreateChild)
326 .method("_getChild", &f_groupGetChild)
327 .method("_getElementById", &f_groupGetElementById);
328 NasalText::init("canvas.Text")
329 .bases<NasalElement>()
330 .method("getNearestCursor", &sc::Text::getNearestCursor);
332 NasalWindow::init("canvas.Window")
333 .bases<NasalElement>()
334 .member("_node_ghost", &elementGetNode<sc::Window>)
335 .method("_getCanvasDecoration", &sc::Window::getCanvasDecoration);
337 nasal::Hash globals_module(globals, c),
338 canvas_module = globals_module.createHash("canvas");
340 canvas_module.set("_newCanvasGhost", f_createCanvas);
341 canvas_module.set("_newWindowGhost", f_createWindow);
342 canvas_module.set("_getCanvasGhost", f_getCanvas);
343 canvas_module.set("_getDesktopGhost", f_getDesktop);
345 canvas_module.createHash("CustomEvent")
346 .set("new", &f_createCustomEvent);