/// <summary>
/// Called when the mouse pointer is moved over the non-client area of the form.
/// </summary>
protected internal virtual void OnMouseMove(ref Message m)
{
// Check for hovered and pressed buttons
if (Control.MouseButtons != MouseButtons.Left)
{
if (_pressedButton != null)
{
_pressedButton.Pressed = false;
_pressedButton = null;
}
}
CaptionButton button = CommandButtonByHitTest((HitTest)m.WParam);
if (_hoveredButton != button && _hoveredButton != null)
{
_hoveredButton.Hovered = false;
}
if (_pressedButton == null)
{
if (button != null)
{
button.Hovered = true;
}
_hoveredButton = button;
}
else
{
_pressedButton.Pressed = (button == _pressedButton);
}
}
/// <summary>
/// Called when the mouse pointer is leaving the non-client area of the form.
/// </summary>
protected internal virtual void OnMouseLeave()
{
if (_pressedButton != null)
{
_pressedButton.Pressed = false;
}
if (_hoveredButton != null)
{
_hoveredButton.Hovered = false;
_hoveredButton = null;
}
}
protected internal override bool OnMouseUp(Message m)
{
if (!IsProcessNcArea)
{
return(false);
}
// do we have a pressed button?
if (PressedButton != null)
{
// get button at wparam
CaptionButton button = CommandButtonByHitTest((HitTest)m.WParam);
if (button == null)
{
return(false);
}
if (button.Pressed)
{
switch (button.HitTest)
{
case HitTest.HTCLOSE:
SkiningForm.Close();
return(true);
case HitTest.HTMAXBUTTON:
if (SkiningForm.WindowState == FormWindowState.Maximized)
{
SkiningForm.WindowState = FormWindowState.Normal;
SkiningForm.Refresh();
}
else if (SkiningForm.WindowState == FormWindowState.Normal ||
SkiningForm.WindowState == FormWindowState.Minimized)
{
SkiningForm.WindowState = FormWindowState.Maximized;
}
break;
case HitTest.HTMINBUTTON:
SkiningForm.WindowState = SkiningForm.WindowState == FormWindowState.Minimized
? FormWindowState.Normal
: FormWindowState.Minimized;
break;
}
}
PressedButton.Pressed = false;
PressedButton.Hovered = false;
PressedButton = null;
}
return(false);
}
/// <summary>
/// Redraws the non client area.
/// </summary>
/// <param name="invalidateBuffer">if set to <c>true</c> the buffer is invalidated.</param>
/// <returns>true if the original painting should be suppressed otherwise false.</returns>
protected internal virtual bool OnNcPaint(bool invalidateBuffer)
{
if (!IsProcessNcArea)
{
return(false);
}
bool result = false;
try
{
SkinningFormPaintData paintData = CreatePaintData();
// create painting meta data for caption buttons
if (_captionButtons.Count > 0)
{
paintData.CaptionButtons = new CaptionButtonPaintData[_captionButtons.Count];
for (int i = 0; i < _captionButtons.Count; i++)
{
CaptionButton button = _captionButtons[i];
CaptionButtonPaintData buttonData = new CaptionButtonPaintData()
{
BaseData = new PaintDataBase(_basePaintParas._bufferGraphics.Graphics, button.Bounds),
Pressed = button.Pressed,
Hovered = button.Hovered,
Enabled = button.Enabled,
HitTest = button.HitTest
};
paintData.CaptionButtons[i] = buttonData;
}
}
// paint
result = OnNcPaint(paintData);
// render buffered graphics
if (_basePaintParas._bufferGraphics != null)
{
_basePaintParas._bufferGraphics.Render(_basePaintParas._g);
}
}
catch (System.Exception)
{
result = false;
}
_basePaintParas.Reset();
return(result);
}
/// <summary>
/// Called when the mouse pointer is over the non-client area of the form and a mouse button is pressed.
/// </summary>
protected internal virtual bool OnMouseDown(ref Message m)
{
CaptionButton button = CommandButtonByHitTest((HitTest)m.WParam);
if (_pressedButton != button && _pressedButton != null)
{
_pressedButton.Pressed = false;
}
if (button != null)
{
button.Pressed = true;
}
_pressedButton = button;
if (_pressedButton != null)
{
m.Result = (IntPtr)1;
return(true);
}
return(false);
}
/// <summary>
/// Performs the non client HitTest
/// </summary>
/// <param name="m">The Message</param>
/// <returns>true if the orginal handler should be suppressed otherwise false.</returns>
protected internal virtual bool OnNcHitTest(ref Message m)
{
if (!IsProcessNcArea)
{
return(false);
}
Point point = new Point(m.LParam.ToInt32());
Rectangle rectScreen = _systemInfoBase.ScreenRect;;
Rectangle rect = rectScreen;
// custom processing
if (rect.Contains(point))
{
Size borderSize = _systemInfoBase.BorderSize;
rect.Inflate(-borderSize.Width, -borderSize.Height);
// let form handle hittest itself if we are on borders
if (!rect.Contains(point))
{
return(false);
}
Rectangle rectCaption = rect;
rectCaption.Height = _systemInfoBase.CaptionHeight;
// not in caption -> client
if (!rectCaption.Contains(point))
{
m.Result = (IntPtr)(int)HitTest.HTCLIENT;
return(true);
}
// on icon?
if (_systemInfoBase.IsHasMenu)
{
Rectangle rectSysMenu = rectCaption;
rectSysMenu.Size = SystemInformation.SmallIconSize;
if (rectSysMenu.Contains(point))
{
m.Result = (IntPtr)(int)HitTest.HTSYSMENU;
return(true);
}
}
// on Button?
Point pt = new Point(point.X - rectScreen.X, point.Y - rectScreen.Y);
CaptionButton sysButton = CommandButtonFromPoint(pt);
if (sysButton != null)
{
m.Result = (IntPtr)sysButton.HitTest;
return(true);
}
// on Caption?
m.Result = (IntPtr)(int)HitTest.HTCAPTION;
return(true);
}
m.Result = (IntPtr)(int)HitTest.HTNOWHERE;
return(true);
}
