private void DecodeZoomGesture(ref Win32.GESTUREINFO gestureInfo)
{
ZoomGestureEventArgs args = new ZoomGestureEventArgs();
switch (gestureInfo.dwFlags)
{
case Win32.GF_BEGIN:
{
args.state = GestureState.Begin;
mZoomInfo.ptFirst.X = gestureInfo.ptsLocation.X;
mZoomInfo.ptFirst.Y = gestureInfo.ptsLocation.Y;
}
break;
default:
{
if (args.state == GestureState.End)
{
args.state = GestureState.End;
}
else
{
args.state = GestureState.Move;
}
// Read the second point of the gesture, this is the middle point between the fingers
mZoomInfo.ptSecond.X = gestureInfo.ptsLocation.X;
mZoomInfo.ptSecond.Y = gestureInfo.ptsLocation.Y;
// Calculate the zoom center point
POINT ptZoomCenter = new POINT((mZoomInfo.ptFirst.X + mZoomInfo.ptSecond.X) / 2,
(mZoomInfo.ptFirst.Y + mZoomInfo.ptSecond.Y) / 2);
args.zoom = (double)(gestureInfo.ullArguments & Win32.ULL_ARGUMENTS_BIT_MASK) /
(double)(mZoomInfo.argument);
}
break;
}
args.distance = (int)(gestureInfo.ullArguments & Win32.ULL_ARGUMENTS_BIT_MASK);
args.ptFirst.X = mZoomInfo.ptFirst.X;
args.ptFirst.Y = mZoomInfo.ptFirst.Y;
args.ptSecond.X = mZoomInfo.ptSecond.X;
args.ptSecond.Y = mZoomInfo.ptSecond.Y;
if (ZoomEventHandler != null)
{
ZoomEventHandler(this, args);
}
// Store the new information as a starting point for the next step in the gesture
mZoomInfo.argument = (int)(gestureInfo.ullArguments & Win32.ULL_ARGUMENTS_BIT_MASK);
if (gestureInfo.dwFlags != Win32.GF_BEGIN)
{
mZoomInfo.ptFirst.X = mZoomInfo.ptSecond.X;
mZoomInfo.ptFirst.Y = mZoomInfo.ptSecond.Y;
}
}
private void DecodeZoomGesture(ref Win32.GESTUREINFO gestureInfo)
{
ZoomGestureEventArgs e = new ZoomGestureEventArgs();
if (gestureInfo.dwFlags == 1)
{
e.state = GestureState.Begin;
this.mZoomInfo.ptFirst.X = gestureInfo.ptsLocation.X;
this.mZoomInfo.ptFirst.Y = gestureInfo.ptsLocation.Y;
}
else
{
if (e.state == GestureState.End)
{
e.state = GestureState.End;
}
else
{
e.state = GestureState.Move;
}
this.mZoomInfo.ptSecond.X = gestureInfo.ptsLocation.X;
this.mZoomInfo.ptSecond.Y = gestureInfo.ptsLocation.Y;
new POINT((this.mZoomInfo.ptFirst.X + this.mZoomInfo.ptSecond.X) / 2, (this.mZoomInfo.ptFirst.Y + this.mZoomInfo.ptSecond.Y) / 2);
e.zoom = ((double)(((ulong)gestureInfo.ullArguments) & 0xffffffffL)) / ((double)this.mZoomInfo.argument);
}
e.distance = (int)(((ulong)gestureInfo.ullArguments) & 0xffffffffL);
e.ptFirst.X = this.mZoomInfo.ptFirst.X;
e.ptFirst.Y = this.mZoomInfo.ptFirst.Y;
e.ptSecond.X = this.mZoomInfo.ptSecond.X;
e.ptSecond.Y = this.mZoomInfo.ptSecond.Y;
if (this.ZoomEventHandler != null)
{
this.ZoomEventHandler(this, e);
}
this.mZoomInfo.argument = (int)(((ulong)gestureInfo.ullArguments) & 0xffffffffL);
if (gestureInfo.dwFlags != 1)
{
this.mZoomInfo.ptFirst.X = this.mZoomInfo.ptSecond.X;
this.mZoomInfo.ptFirst.Y = this.mZoomInfo.ptSecond.Y;
}
}
private void DecodeZoomGesture(ref Win32.GESTUREINFO gestureInfo)
{
ZoomGestureEventArgs e = new ZoomGestureEventArgs();
if (gestureInfo.dwFlags == 1)
{
e.state = GestureState.Begin;
this.mZoomInfo.ptFirst.X = gestureInfo.ptsLocation.X;
this.mZoomInfo.ptFirst.Y = gestureInfo.ptsLocation.Y;
}
else
{
if (e.state == GestureState.End)
{
e.state = GestureState.End;
}
else
{
e.state = GestureState.Move;
}
this.mZoomInfo.ptSecond.X = gestureInfo.ptsLocation.X;
this.mZoomInfo.ptSecond.Y = gestureInfo.ptsLocation.Y;
new POINT((this.mZoomInfo.ptFirst.X + this.mZoomInfo.ptSecond.X) / 2, (this.mZoomInfo.ptFirst.Y + this.mZoomInfo.ptSecond.Y) / 2);
e.zoom = ((double) (((ulong) gestureInfo.ullArguments) & 0xffffffffL)) / ((double) this.mZoomInfo.argument);
}
e.distance = (int) (((ulong) gestureInfo.ullArguments) & 0xffffffffL);
e.ptFirst.X = this.mZoomInfo.ptFirst.X;
e.ptFirst.Y = this.mZoomInfo.ptFirst.Y;
e.ptSecond.X = this.mZoomInfo.ptSecond.X;
e.ptSecond.Y = this.mZoomInfo.ptSecond.Y;
if (this.ZoomEventHandler != null)
{
this.ZoomEventHandler(this, e);
}
this.mZoomInfo.argument = (int) (((ulong) gestureInfo.ullArguments) & 0xffffffffL);
if (gestureInfo.dwFlags != 1)
{
this.mZoomInfo.ptFirst.X = this.mZoomInfo.ptSecond.X;
this.mZoomInfo.ptFirst.Y = this.mZoomInfo.ptSecond.Y;
}
}