// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
#include "CanvasEventManager.hxx"
-#include "MouseEvent.hxx"
+#include <simgear/canvas/events/MouseEvent.hxx>
#include <simgear/canvas/elements/CanvasElement.hxx>
+#include <cmath>
namespace simgear
{
return !path.empty() && time > 0;
}
+ //----------------------------------------------------------------------------
+ void EventManager::MouseEventInfo::set( const MouseEventPtr& event,
+ const EventPropagationPath& p )
+ {
+ path = p;
+ time = event->time;
+ button = event->button;
+ pos = event->screen_pos;
+ }
+
//----------------------------------------------------------------------------
EventManager::EventManager():
_current_click_count(0)
switch( event->type )
{
case Event::MOUSE_DOWN:
- _last_mouse_down = StampedPropagationPath(path, event->getTime());
+ _last_mouse_down.set(event, path);
break;
case Event::MOUSE_UP:
{
// normal mouseup
handled |= propagateEvent(event, path);
- if( _last_mouse_down.path.empty() )
+ if( !_last_mouse_down.valid() )
// Ignore mouse up without any previous mouse down
return handled;
// now handle click/dblclick
- if( checkClickDistance(path, _last_mouse_down.path) )
+ if( checkClickDistance(event->screen_pos, _last_mouse_down.pos) )
handled |=
handleClick(event, getCommonAncestor(_last_mouse_down.path, path));
if( !_last_mouse_down.valid() )
return false;
else
+ {
+ // OSG does not set button for drag events.
+ event->button = _last_mouse_down.button;
return propagateEvent(event, _last_mouse_down.path);
+ }
case Event::MOUSE_MOVE:
handled |= handleMove(event, path);
break;
case Event::MOUSE_LEAVE:
// Mouse leaves window and therefore also current mouseover element
handleMove(event, EventPropagationPath());
+
+ // Event is only send if mouse is moved outside the window or dragging
+ // has ended somewhere outside the window. In both cases a mouse button
+ // has been released, so no more mouse down or click...
+ _last_mouse_down.clear();
+ _last_click.clear();
+
return true;
case Event::WHEEL:
break;
return handled | propagateEvent(event, path);
}
+ //----------------------------------------------------------------------------
+ bool EventManager::propagateEvent( const EventPtr& event,
+ const EventPropagationPath& path )
+ {
+ event->target = path.back().element;
+ MouseEventPtr mouse_event = dynamic_cast<MouseEvent*>(event.get());
+
+ // Event propagation similar to DOM Level 3 event flow:
+ // http://www.w3.org/TR/DOM-Level-3-Events/#event-flow
+
+ // Position update only needed for drag event (as event needs to be
+ // delivered to element of initial mousedown, but with update positions)
+ if( mouse_event && mouse_event->type == MouseEvent::DRAG )
+ {
+ osg::Vec2f local_pos = mouse_event->client_pos;
+
+ // Capturing phase (currently just update position)
+ for( EventPropagationPath::const_iterator it = path.begin();
+ it != path.end();
+ ++it )
+ {
+ ElementPtr el = it->element.lock();
+ if( !el )
+ continue;
+
+ it->local_pos = local_pos = el->posToLocal(local_pos);
+ }
+ }
+
+ bool const do_bubble = event->canBubble();
+
+ // Bubbling phase
+ for( EventPropagationPath::const_reverse_iterator
+ it = path.rbegin();
+ it != path.rend();
+ ++it )
+ {
+ ElementPtr el = it->element.lock();
+
+ if( !el )
+ {
+ // Ignore element if it has been destroyed while traversing the event
+ // (eg. removed by another event handler)
+ if( do_bubble )
+ continue;
+ else
+ break;
+ }
+
+ // TODO provide functions to convert delta to local coordinates on demand.
+ // Maybe also provide a clone method for events as local coordinates
+ // might differ between different elements receiving the same event.
+ if( mouse_event )
+ mouse_event->local_pos = it->local_pos;
+
+ event->current_target = el;
+ el->handleEvent(event);
+
+ if( event->propagation_stopped || !do_bubble )
+ return true;
+ }
+
+ return true;
+ }
+
//----------------------------------------------------------------------------
bool EventManager::handleClick( const MouseEventPtr& event,
const EventPropagationPath& path )
if( _current_click_count > 1 )
{
- // Reset current click count if moved too far
- if( !checkClickDistance(path, _last_click.path) )
+ // Reset current click count if moved too far or different button has
+ // been clicked
+ if( !checkClickDistance(event->screen_pos, _last_click.pos)
+ || _last_click.button != event->button )
_current_click_count = 1;
}
}
handled |= propagateEvent( dbl_click,
getCommonAncestor(_last_click.path, path) );
- _last_click = StampedPropagationPath(path, event->getTime());
+ _last_click.set(event, path);
return handled;
}
return handled;
}
- //----------------------------------------------------------------------------
- bool EventManager::propagateEvent( const EventPtr& event,
- const EventPropagationPath& path )
- {
- event->target = path.back().element;
- MouseEventPtr mouse_event = boost::dynamic_pointer_cast<MouseEvent>(event);
-
- // Event propagation similar to DOM Level 3 event flow:
- // http://www.w3.org/TR/DOM-Level-3-Events/#event-flow
-
- // Capturing phase
-// for( EventPropagationPath::const_iterator it = path.begin();
-// it != path.end();
-// ++it )
-// {
-// if( !it->element.expired() )
-// std::cout << it->element.lock()->getProps()->getPath() << std::endl;
-// }
-
- // Bubbling phase
- for( EventPropagationPath::const_reverse_iterator
- it = path.rbegin();
- it != path.rend();
- ++it )
- {
- ElementPtr el = it->element.lock();
-
- if( !el )
- // Ignore element if it has been destroyed while traversing the event
- // (eg. removed by another event handler)
- continue;
-
- // TODO provide functions to convert delta to local coordinates on demand.
- // Maybe also provide a clone method for events as local coordinates
- // might differ between different elements receiving the same event.
- if( mouse_event ) //&& event->type != Event::DRAG )
- {
- // TODO transform pos and delta for drag events. Maybe we should just
- // store the global coordinates and convert to local coordinates
- // on demand.
-
- // Position and delta are specified in local coordinate system of
- // current element
- mouse_event->local_pos = it->local_pos;
- //mouse_event->delta = it->local_delta;
- }
-
- el->handleEvent(event);
-
- if( event->propagation_stopped )
- return true;
- }
-
- return true;
- }
-
//----------------------------------------------------------------------------
bool
- EventManager::checkClickDistance( const EventPropagationPath& path1,
- const EventPropagationPath& path2 ) const
+ EventManager::checkClickDistance( const osg::Vec2f& pos1,
+ const osg::Vec2f& pos2 ) const
{
- osg::Vec2 delta = path1.front().local_pos - path2.front().local_pos;
+ osg::Vec2 delta = pos1 - pos2;
return std::fabs(delta.x()) < drag_threshold
&& std::fabs(delta.y()) < drag_threshold;
}
projects / simgear.git / blobdiff