public virtual void Measure(Size bounds)
{
myNeedsMeasure = false;
// cap a control's dimensions if desired
bounds.Width = Math.Min(bounds.Width, myMaxWidth);
bounds.Height = Math.Min(bounds.Height, myMaxHeight);
Size newBounds = bounds;
if (bounds.Width != Int32.MaxValue)
{
newBounds.Width = bounds.Width - myMargin.Value.Left - myMargin.Value.Right;
}
if (bounds.Height != Int32.MaxValue)
{
newBounds.Height = bounds.Height - myMargin.Value.Top - myMargin.Value.Bottom;
}
bool boundsChange = myLastMeasureBounds != newBounds;
myLastMeasureBounds = newBounds;
if (MeasureUnpadded(newBounds, boundsChange))
{
WindowlessControlHost.WindowlessInvalidate(this);
}
}
void WindowlessInvalidate(Rectangle rect)
{
PrepareDirtyRegion();
myDirtyRegion.Union(rect);
Invalidate(rect);
// tell all child controls that are transparent and in this rect that they need to repaint
foreach (Control control in Controls)
{
WindowlessControlHost wc = control as WindowlessControlHost;
if (wc == null || wc.BackColor != Color.Transparent)
{
continue;
}
Rectangle intersect = new Rectangle(wc.Left, wc.Top, wc.Width, wc.Height);
intersect.Intersect(rect);
if (intersect.Width == 0 || intersect.Height == 0)
{
continue;
}
intersect.X -= wc.Left;
intersect.Y -= wc.Top;
wc.WindowlessInvalidate(intersect);
}
}
void RectangleWidthChanged(object sender, DependencyPropertyEventArgs e)
{
myPen.Width = (float)myRectangleWidth.Value;
if (!myFilled.Value)
{
WindowlessControlHost.WindowlessInvalidate(this);
}
}
void BottomRightColorChanged(object sender, DependencyPropertyEventArgs e)
{
myVertices[1].Red = (ushort)(myBottomRightColor.Value.R << 8);
myVertices[1].Green = (ushort)(myBottomRightColor.Value.G << 8);
myVertices[1].Blue = (ushort)(myBottomRightColor.Value.B << 8);
myVertices[1].Alpha = (ushort)(myBottomRightColor.Value.A << 8);
WindowlessControlHost.WindowlessInvalidate(this);
}
public static void WindowlessInvalidate(IWindowlessControl sender)
{
Point origin = Point.Empty;
IWindowlessControl parent = sender;
while (!(parent is WindowlessControlHost) && parent != null)
{
origin.X += parent.Left;
origin.Y += parent.Top;
parent = parent.Parent;
}
WindowlessControlHost host = parent as WindowlessControlHost;
if (host != null)
{
host.WindowlessInvalidate(new Rectangle(origin.X, origin.Y, sender.Width, sender.Height));
}
}
void BitmapChanged(object sender, DependencyPropertyEventArgs e)
{
PlatformBitmap oldBitmap = e.OldValue as PlatformBitmap;
PlatformBitmap newBitmap = e.NewValue as PlatformBitmap;
Size originalSize = Size.Empty;
if (oldBitmap != null)
{
originalSize = new Size(oldBitmap.Width, oldBitmap.Height);
}
Size newSize = Size.Empty;
if (newBitmap != null)
{
newSize = new Size(newBitmap.Width, newBitmap.Height);
}
if (originalSize != newSize)
{
Remeasure();
}
WindowlessControlHost.WindowlessInvalidate(this);
}
void ForeColorChanged(object sender, DependencyPropertyEventArgs e)
{
myForeBrush.Color = ForeColor;
WindowlessControlHost.WindowlessInvalidate(this);
}
protected virtual void FontChanged(object sender, DependencyPropertyEventArgs e)
{
WindowlessControlHost.WindowlessInvalidate(this);
Remeasure();
WindowlessControlHost.WindowlessInvalidate(this);
}
void VerticalTextAlignmentChanged(object sender, DependencyPropertyEventArgs e)
{
WindowlessControlHost.WindowlessInvalidate(this);
}
void MultilineChanged(object sender, DependencyPropertyEventArgs e)
{
WindowlessControlHost.WindowlessInvalidate(this);
}
void AutoEllipsisChanged(object sender, DependencyPropertyEventArgs e)
{
WindowlessControlHost.WindowlessInvalidate(this);
}
void MarginChanged(object sender, DependencyPropertyEventArgs e)
{
WindowlessControlHost.WindowlessInvalidate(this);
Remeasure();
}
void ClipToBoundsChanged(object sender, DependencyPropertyEventArgs e)
{
WindowlessControlHost.WindowlessInvalidate(this);
}
void PaintChildrenChanged(object sender, DependencyPropertyEventArgs e)
{
WindowlessControlHost.WindowlessInvalidate(this);
}
void GradientDirectionChanged(object sender, DependencyPropertyEventArgs e)
{
WindowlessControlHost.WindowlessInvalidate(this);
}