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/*
* Copyright 2012 Inalogic® Inc.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License, as
* published by the Free Software Foundation; either version 2.1 or 3.0
* of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the applicable version of the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of both the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Authored by: Brandon Schaefer <brandon.schaefer@canonical.com>
*
*/
#include "WindowCompositor.h"
#include "WindowThread.h"
#include "InputAreaProximity.h"
#include "NuxCore/Logger.h"
namespace nux
{
DECLARE_LOGGER(logger, "nux.inputarea_proximity");
InputAreaProximity::InputAreaProximity(InputArea* area, unsigned int proximity)
: area_(area)
, proximity_(proximity)
, is_mouse_near_(false)
{
if(area)
GetWindowThread()->GetWindowCompositor().AddAreaInProximityList(this);
else
LOG_ERROR(logger) << "Error, passing in NULL value for InputArea*";
}
InputAreaProximity::~InputAreaProximity()
{
GetWindowThread()->GetWindowCompositor().RemoveAreaInProximityList(this);
}
Point GetOffsetFromRect(Rect const& rect, Point const& mouse)
{
Point offset;
if (rect.x > mouse.x)
{
offset.x = rect.x - mouse.x;
}
else if (rect.x + rect.width < mouse.x)
{
offset.x = rect.x + rect.width - mouse.x;
}
if (rect.y > mouse.y)
{
offset.y = rect.y - mouse.y;
}
else if (rect.y + rect.height < mouse.y)
{
offset.y = rect.y + rect.height - mouse.y;
}
return offset;
}
void InputAreaProximity::CheckMousePosition(Point const& mouse)
{
if (!area_.IsValid())
return;
Geometry const& geo = area_->GetAbsoluteGeometry();
Geometry const& expanded = geo.GetExpand(proximity_, proximity_);
if (!is_mouse_near_ && expanded.IsInside(mouse))
{
is_mouse_near_ = true;
mouse_near.emit(mouse);
}
else if (is_mouse_near_ && !expanded.IsInside(mouse))
{
is_mouse_near_ = false;
mouse_beyond.emit(mouse);
}
if (is_mouse_near_ && !geo.IsInside(mouse))
{
nux::Point const& offset = GetOffsetFromRect(geo, mouse);
mouse_approaching.emit(mouse, offset);
}
}
}
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