protected override void OnPaint(PaintEventArgs e)
{
//Simulate Transparency
if (BackColor == Color.Transparent)
{
#if !PocketPC
if (Parent is ISupportsTransparentChildRendering)
{
((ISupportsTransparentChildRendering)Parent).TransparentChild = this;
}
System.Drawing.Drawing2D.GraphicsContainer g = e.Graphics.BeginContainer();
Rectangle translateRect = this.Bounds;
e.Graphics.TranslateTransform(-Left, -Top);
PaintEventArgs pe = new PaintEventArgs(e.Graphics, translateRect);
this.InvokePaintBackground(Parent, pe);
this.InvokePaint(Parent, pe);
//fixed bug#:796041, the forgound not need to display
//this.InvokePaint(Parent, pe);
e.Graphics.ResetTransform();
e.Graphics.EndContainer(g);
pe.Dispose();
if (Parent is ISupportsTransparentChildRendering)
{
((ISupportsTransparentChildRendering)Parent).TransparentChild = null;
}
#endif
}
ControlRenderer.FillRectAccordingToGradientStyle(e.Graphics, ClientRectangle, BackColor, LinkColor, 0,
false, GradientColor, GradientStyle);
ContentAlignment newTextAlign = ControlUtils.GetOrgContentAligment(RightToLeft, TextAlign);
FontDescription font = new FontDescription(Font);
ControlRenderer.PrintText(e.Graphics, ClientRectangle, LinkColor, font, Text, false, newTextAlign,
Enabled, true, !UseMnemonic, false, (RightToLeft == RightToLeft.Yes));
//fixed bug #:765815 : when parking on hypertext button,focus need to seen on text on the button (not on entire button)
if (Focused)
{
Size textExt = Utils.GetTextExt(Font, Text, this);
// get the display the focus on the text of the control
Rectangle textRect = ControlUtils.GetFocusRect(this, ClientRectangle, newTextAlign, textExt);
//ass offset, it will look as in online
textRect.Inflate(2, 2);
textRect.Width -= 2;
textRect.Height -= 1;
textRect.X = Math.Max(1, textRect.X);
textRect.Y = Math.Max(1, textRect.Y);
textRect.Width = Math.Min(textRect.Width, ClientRectangle.Width - textRect.X);
textRect.Height = Math.Min(textRect.Height, ClientRectangle.Height - textRect.Y);
ControlPaint.DrawFocusRectangle(e.Graphics, textRect);
}
}
/// <summary>paint the push button control
/// Can be called from :
/// 1. push control with property 'ButtonStyle' = button
/// 2. CheckBox control with property appearance = button
/// 3. Radio control with property appearance = button
/// </summary>
/// <param name="mgButton"></param>
/// <param name="e"></param>
private static void DrawText(Control control, PaintEventArgs e)
{
Debug.Assert(control.Visible);
bool restoreClip = false;
Region r = e.Graphics.Clip;
bool isImage = false;
ContentAlignment textAlign = ContentAlignment.MiddleLeft;
RightToLeft rightToLeft = RightToLeft.No;
String Text = ((IDisplayInfo)control).TextToDisplay;
if (Text == null)
{
return;
}
Rectangle displayRect = control.ClientRectangle;
#if PocketPC
if (control is MgButtonBase)
{
isImage = ((MgButtonBase)control).BackgroundImage != null;
textAlign = ((MgButtonBase)control).TextAlign;
rightToLeft = ((MgButtonBase)control).RightToLeft;
}
else if (control is MgCheckBox)
{
isImage = ((MgCheckBox)control).Image != null;
textAlign = ((MgCheckBox)control).TextAlign;
rightToLeft = ((MgCheckBox)control).RightToLeft;
}
else
{
Debug.Assert(false);
}
#else
if (control is ButtonBase)
{
if (control is IImageProperty)
{
isImage = ((IImageProperty)control).Image != null;
}
else
{
isImage = ((ButtonBase)control).BackgroundImage != null;
}
textAlign = ((ButtonBase)control).TextAlign;
rightToLeft = ((ButtonBase)control).RightToLeft;
}
else
{
Debug.Assert(false);
}
#endif
// The runtime engine sends the alignment in reverse order if rightToLeft=Yes.
// This is because the .net framework need it to be in the reverse order when rightToLeft=Yes.
// So, when we paint the control, we should convert it back to the original alignment.
textAlign = ControlUtils.GetOrgContentAligment(rightToLeft, textAlign);
if (!isImage)
{
//2. get the display rect
displayRect = GetTextRect(control);
if (control is MgPushButton)
{
restoreClip = true;
using (Region TextRegion = new Region(displayRect))
{
e.Graphics.Clip = TextRegion;
}
}
}
bool isMultiLine = ControlUtils.GetIsMultiLine(control);
bool RTL = rightToLeft == RightToLeft.Yes ? true : false;
//4. display the text of the control
FontDescription font = new FontDescription(control.Font);
ControlRenderer.PrintText(e.Graphics, displayRect, control.ForeColor, font, Text, isMultiLine,
textAlign, control.Enabled, false, false, false, RTL, true);
if (restoreClip)
{
e.Graphics.Clip = r;
}
//focus rect should not be drawn for image button.
if (!ControlUtils.IsImageButton(control))
{
if (control.Focused)
{
displayRect.Inflate(-1, -1);
ControlPaint.DrawFocusRectangle(e.Graphics, displayRect);
}
}
}
