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/*
* Copyright (c) 2016, Metron, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Metron, Inc. nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL METRON, INC. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.metsci.glimpse.swt.event.mouse;
import java.util.EnumSet;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import com.metsci.glimpse.context.GlimpseTargetStack;
import com.metsci.glimpse.event.mouse.GlimpseMouseEvent;
import com.metsci.glimpse.event.mouse.ModifierKey;
import com.metsci.glimpse.event.mouse.MouseButton;
public class GlimpseMouseWrapper
{
private GlimpseMouseWrapper( )
{
}
public static GlimpseMouseEvent fromMouseEvent( MouseEvent event )
{
int x = event.x;
int y = event.y;
int clickCount = event.count;
EnumSet buttons = getMouseButtons( event );
EnumSet modifiers = getModifierKeys( event );
GlimpseTargetStack stack = null;
if ( event.data instanceof GlimpseTargetStack )
{
stack = ( GlimpseTargetStack ) event.data;
}
return new GlimpseMouseEvent( stack, modifiers, buttons, x, y, 0, clickCount );
}
public static GlimpseMouseEvent fromMouseWheelEvent( MouseEvent event )
{
int x = event.x;
int y = event.y;
// for some reason SWT appears to count one "click" of the mouse wheel as
// three clicks on most platforms, this brings it in line with Swing
// mouse wheel reporting. It also flips the sign
// (extra logic avoids rounding signed 1 or 2 to 0)
double c = -event.count / 3.0;
int clickCount = ( int ) ( c < 0 ? Math.floor( c ) : Math.ceil( c ) );
EnumSet buttons = getMouseButtons( event );
EnumSet modifiers = getModifierKeys( event );
GlimpseTargetStack stack = null;
if ( event.data instanceof GlimpseTargetStack )
{
stack = ( GlimpseTargetStack ) event.data;
}
return new GlimpseMouseEvent( stack, modifiers, buttons, x, y, clickCount, 0 );
}
public static EnumSet getMouseButtons( MouseEvent event )
{
EnumSet buttons;
// SWT MouseEvents report the button pressed or released differently
// than it reports the buttons held down during a move or drag.
// However, GlimpseMouseEvent treats these two cases the same.
switch ( event.button )
{
case 1:
buttons = EnumSet.of( MouseButton.Button1 );
break;
case 2:
buttons = EnumSet.of( MouseButton.Button2 );
break;
case 3:
buttons = EnumSet.of( MouseButton.Button3 );
break;
default:
buttons = EnumSet.noneOf( MouseButton.class );
break;
}
if ( ( event.stateMask & SWT.BUTTON1 ) != 0 ) buttons.add( MouseButton.Button1 );
if ( ( event.stateMask & SWT.BUTTON2 ) != 0 ) buttons.add( MouseButton.Button2 );
if ( ( event.stateMask & SWT.BUTTON3 ) != 0 ) buttons.add( MouseButton.Button3 );
return buttons;
}
public static EnumSet getModifierKeys( MouseEvent event )
{
EnumSet modifiers = EnumSet.noneOf( ModifierKey.class );
if ( ( event.stateMask & SWT.ALT ) != 0 ) modifiers.add( ModifierKey.Alt );
if ( ( event.stateMask & SWT.CTRL ) != 0 ) modifiers.add( ModifierKey.Ctrl );
if ( ( event.stateMask & SWT.COMMAND ) != 0 ) modifiers.add( ModifierKey.Meta );
if ( ( event.stateMask & SWT.SHIFT ) != 0 ) modifiers.add( ModifierKey.Shift );
return modifiers;
}
}
