/*
* OnPaint
*/
/// <summary>
/// Raises the <see cref="M:System.Windows.Forms.ButtonBase.OnPaint(System.Windows.Forms.PaintEventArgs)"></see> event.
/// </summary>
/// <param name="e">A <see cref="T:System.Windows.Forms.PaintEventArgs"></see> that contains the event data.</param>
protected override void OnPaint(PaintEventArgs e)
{
Graphics g = e.Graphics;
Rectangle bounds = this.ClientRectangle;
/* Translate e.Graphics to render different scroll-button styles. */
switch (this.Style)
{
case NuGenScrollButtonStyle.Left:
{
bounds = new Rectangle(bounds.Top, bounds.Left, bounds.Height, bounds.Width);
NuGenControlPaint.Make90CWGraphics(g, bounds);
break;
}
case NuGenScrollButtonStyle.Right:
{
NuGenControlPaint.Make90CCWGraphics(g, bounds);
bounds = new Rectangle(bounds.Top, bounds.Left, bounds.Height, bounds.Width);
break;
}
case NuGenScrollButtonStyle.Up:
{
NuGenControlPaint.Make180CCWGraphics(g, bounds);
break;
}
}
if (
bounds.Width > 0 &&
bounds.Height > 0
)
{
NuGenPaintParams paintParams = new NuGenPaintParams(g);
paintParams.Bounds = bounds;
paintParams.State = this.ButtonStateTracker.GetControlState();
if (this.DoubleArrow)
{
this.Renderer.DrawDoubleScrollButton(paintParams);
}
else
{
this.Renderer.DrawScrollButton(paintParams);
}
}
}
private void DrawHeader(Graphics g, Rectangle bounds)
{
Debug.Assert(g != null, "g != null");
int headerHeight = this.LayoutManager.GetHeaderHeight();
int collapseButtonWidth = this.LayoutManager.GetCollapseButtonWidth();
Rectangle headerBounds = new Rectangle(
bounds.Left
, bounds.Top + headerHeight
, bounds.Width
, headerHeight
);
Rectangle headerBodyBounds = headerBounds;
headerBodyBounds.Width -= collapseButtonWidth;
if (this.RightToLeft == RightToLeft.Yes)
{
headerBodyBounds.X += collapseButtonWidth;
}
NuGenControlState headerState = this.HeaderStateTracker.GetControlState();
NuGenItemPaintParams headerPaintParams = new NuGenItemPaintParams(g);
headerPaintParams.Bounds = NuGenControlPaint.BorderRectangle(headerBounds);
headerPaintParams.ContentAlign =
this.RightToLeft == RightToLeft.Yes
? ContentAlignment.MiddleRight
: ContentAlignment.MiddleLeft
;
headerPaintParams.Font = this.Font;
headerPaintParams.ForeColor = this.ForeColor;
headerPaintParams.Image = this.Image;
headerPaintParams.State = headerState;
headerPaintParams.Text = this.Text;
this.Renderer.DrawBackground(headerPaintParams);
this.Renderer.DrawBorder(headerPaintParams);
headerPaintParams.Bounds = headerBodyBounds;
this.Renderer.DrawHeader(headerPaintParams);
Rectangle collapseButtonBounds = new Rectangle(headerBounds.Left, headerBounds.Top, collapseButtonWidth, headerBounds.Height);
if (this.RightToLeft == RightToLeft.Yes)
{
if (!_collapsed)
{
NuGenControlPaint.Make180CCWGraphics(headerPaintParams.Graphics, collapseButtonBounds);
}
}
else
{
if (!_collapsed)
{
headerPaintParams.Graphics.RotateTransform(180);
headerPaintParams.Graphics.TranslateTransform(
-(headerBounds.Width + headerBodyBounds.Width) + 1
, -headerHeight + 1
);
}
collapseButtonBounds.X += headerBodyBounds.Right;
}
headerPaintParams.Bounds = collapseButtonBounds;
this.Renderer.DrawCollapseButton(headerPaintParams);
}
