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/*****************************************************************************
* *
* OpenNI 2.x Alpha *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of OpenNI. *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*****************************************************************************/
// --------------------------------
// Includes
// --------------------------------
#include "XnLib.h"
#include "XnMath.h"
#include "MouseInput.h"
#if (XN_PLATFORM == XN_PLATFORM_MACOSX)
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif
// --------------------------------
// Types
// --------------------------------
typedef struct MouseInput
{
SelectionState nSelectionState;
IntPair StartSelection;
IntPair LastLocation;
SelectionRectangleChangedPtr pSelectionCallback;
CursorMovedPtr pCursorCallback;
} MouseInput;
MouseInput g_MouseInput = {SELECTION_NONE, {0,0}, {0,0}, NULL, NULL};
void mouseInputCallSelection()
{
if (g_MouseInput.pSelectionCallback != NULL)
{
IntRect selection;
selection.uBottom = xnl::Math::Min(g_MouseInput.StartSelection.Y, g_MouseInput.LastLocation.Y);
selection.uTop = xnl::Math::Max(g_MouseInput.StartSelection.Y, g_MouseInput.LastLocation.Y);
selection.uLeft = xnl::Math::Min(g_MouseInput.StartSelection.X, g_MouseInput.LastLocation.X);
selection.uRight = xnl::Math::Max(g_MouseInput.StartSelection.X, g_MouseInput.LastLocation.X);
g_MouseInput.pSelectionCallback(g_MouseInput.nSelectionState, selection);
}
}
void mouseInputMotion(int x, int y)
{
g_MouseInput.LastLocation.X = x;
g_MouseInput.LastLocation.Y = y;
if (g_MouseInput.pCursorCallback != NULL)
g_MouseInput.pCursorCallback(g_MouseInput.LastLocation);
if (g_MouseInput.nSelectionState == SELECTION_ACTIVE)
mouseInputCallSelection();
}
void mouseInputButton(int button, int state, int x, int y)
{
if (button == GLUT_LEFT_BUTTON)
{
if (state == GLUT_DOWN)
{
g_MouseInput.nSelectionState = SELECTION_ACTIVE;
g_MouseInput.StartSelection.X = x;
g_MouseInput.StartSelection.Y = y;
}
else if (state == GLUT_UP && g_MouseInput.nSelectionState == SELECTION_ACTIVE)
{
// this is only a selection if mouse has moved
if (x != g_MouseInput.StartSelection.X && y != g_MouseInput.StartSelection.Y)
{
g_MouseInput.nSelectionState = SELECTION_DONE;
mouseInputCallSelection();
}
g_MouseInput.nSelectionState = SELECTION_NONE;
}
}
}
void mouseInputRegisterForSelectionRectangle(SelectionRectangleChangedPtr pFunc)
{
g_MouseInput.pSelectionCallback = pFunc;
}
void mouseInputRegisterForCursorMovement(CursorMovedPtr pFunc)
{
g_MouseInput.pCursorCallback = pFunc;
}
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