protected override void OnMouseEnter(EventArgs e)
{
base.OnMouseEnter(e);
if (this.Enabled && !this.keyPressed)
{
this.drawState = ButtonDrawState.Hot;
Invalidate();
}
}
protected override void OnLostFocus(EventArgs e)
{
base.OnLostFocus(e);
if (this.Enabled)
{
this.drawState = ButtonDrawState.Normal;
Invalidate();
}
}
protected override void OnEnabledChanged(EventArgs e)
{
base.OnEnabledChanged(e);
if (this.Enabled)
{
this.drawState = ButtonDrawState.Normal;
}
else
{
this.drawState = ButtonDrawState.Disabled;
}
Invalidate();
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (this.Enabled)
{
if (this.drawState == ButtonDrawState.Pressed)
{
OnClick(EventArgs.Empty);
}
this.drawState = ButtonDrawState.Focused;
Invalidate();
}
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (!this.Enabled)
{
return;
}
if (e.Button == MouseButtons.Left)
{
this.drawState = ButtonDrawState.Pressed;
Invalidate();
}
}
protected override void OnKeyUp(KeyEventArgs e)
{
base.OnKeyUp(e);
if (e.KeyCode == Keys.Space)
{
this.keyPressed = false;
this.drawState = ButtonDrawState.Focused;
Invalidate();
OnClick(EventArgs.Empty);
}
else if (e.KeyCode == Keys.Enter)
{
OnClick(EventArgs.Empty);
}
}
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
if (!this.Enabled)
{
return;
}
if (e.KeyCode == Keys.Space)
{
this.keyPressed = true;
this.drawState = ButtonDrawState.Pressed;
Invalidate();
}
}
protected override void OnMouseLeave(EventArgs e)
{
base.OnMouseLeave(e);
if (this.Enabled && !this.keyPressed)
{
if (this.IsDefault)
{
this.drawState = ButtonDrawState.Focused;
}
else
{
this.drawState = ButtonDrawState.Normal;
}
Invalidate();
}
}
public ImageButton()
{
SetStyle(ControlStyles.Selectable |
ControlStyles.StandardClick |
ControlStyles.ResizeRedraw |
ControlStyles.AllPaintingInWmPaint |
ControlStyles.DoubleBuffer |
ControlStyles.OptimizedDoubleBuffer |
ControlStyles.UserPaint,
true);
// This call is required by the Windows.Forms Form Designer.
InitializeComponent();
this.drawState = ButtonDrawState.Normal;
this.backgroundBrush = new SolidBrush(this.BackColor);
this.hotTrackBrush = new SolidBrush(Color.FromArgb(128, SystemColors.HotTrack));
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (!this.Enabled)
{
return;
}
if (e.Button == MouseButtons.Left && this.Bounds.Contains(e.X, e.Y))
{
this.drawState = ButtonDrawState.Pressed;
}
else
{
if (this.keyPressed)
{
return;
}
this.drawState = ButtonDrawState.Hot;
}
Invalidate();
}
