protected override void OnMouseLeave(EventArgs e)
{
base.OnMouseLeave(e);
if (!sliding && highlighted)
{
highlighted = false;
this.Invalidate();
}
stateWheel = MouseWheelState.Disabled;
}
/// <summary>
/// Event: Occurs when the mousewheel is rotated
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void PictureBox_MouseWheel(object sender, MouseEventArgs e)
{
MouseWheelState ms = (e.Delta < 0) ? MouseWheelState.Decrement : MouseWheelState.Increment;
try
{
if (this.loadedPicture != null)
{
int amount = Math.Abs(e.Delta) / DELTA;
int increment = (int)ms;
int width = pictureSize.Width;
int height = pictureSize.Height;
//decrement the size and ensure it is of a good size before displaying it.
while (amount > 0)
{
if (e.Clicks > 0)
{
increment *= 2;
}
width += increment * WIDTH_DECREMENT;
height += increment * HEIGHT_DECREMENT;
switch (ms)
{
case MouseWheelState.Decrement:
if (width <= WIDTH_DECREMENT || height <= HEIGHT_DECREMENT)
{
return;
}
break;
case MouseWheelState.Increment:
if (width >= MAXIMUM_WIDTH || height > MAXIMUM_HEIGHT)
{
return;
}
break;
}
//this.loadedPicture.Image = this.Image;
this.Image = null;
pictureSize = new Rectangle(pictureSize.X, pictureSize.Y, width, height);
this.Show(new f0t0page.DisplayPictureEventArgs(this.loadedPicture, pictureSize));
amount -= 1;
}
}
}
catch { }
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (lastMove == e.Location)
{
return;
}
lastMove = e.Location;
if (sliding)
{
MoveSlider(e.X - originX);
}
else
{
bool contains = (e.X >= sliderX && e.X < sliderX + sliderW && e.Y >= sliderY && e.Y < sliderY + sliderH);
if (highlighted)
{
if (!contains)
{
highlighted = false;
this.Invalidate();
}
}
else if (contains)
{
highlighted = true;
this.Invalidate();
}
}
switch (stateWheel)
{
case MouseWheelState.Disabled:
stateWheel = MouseWheelState.Entered;
break;
case MouseWheelState.Entered:
stateWheel = MouseWheelState.Enabled;
break;
}
}
internal OnMouseWheelEventArgs(dynamic state)
{
State = (MouseWheelState)state;
}
public static void SetEnableMouseWheel(Slider element, MouseWheelState value)
{
element.SetValue(EnableMouseWheelProperty, value);
}
public static void SetEnableMouseWheel(UIElement element, MouseWheelState value) => element.SetValue(EnableMouseWheelProperty, value);
public static void SetEnableMouseWheel(Slider element, MouseWheelState value)
{
element.SetValue(EnableMouseWheelProperty, value);
}