public override void Apply (CanvasItem item, Context cr)
{
int steps = ShadowSize;
double opacity_step = ShadowOpacity / ShadowSize;
Color color = new Color (0, 0, 0);
double width = Math.Round (item.Allocation.Width);
double height = Math.Round (item.Allocation.Height);
if (Fill != null) {
cr.Rectangle (shadow_size, shadow_size, width - ShadowSize * 2, height - ShadowSize * 2);
Fill.Apply (cr);
cr.Fill ();
}
cr.LineWidth = 1.0;
for (int i = 0; i < steps; i++) {
CairoExtensions.RoundedRectangle (cr,
i + 0.5,
i + 0.5,
(width - 2 * i) - 1,
(height - 2 * i) - 1,
steps - i);
color.A = opacity_step * (i + 1);
cr.Color = color;
cr.Stroke ();
}
}
public void QueueRender (CanvasItem item, Rect rect)
{
if (host == null) {
return;
}
host.QueueRender (item, rect);
}
public void InvalidateMeasure()
{
CanvasItem root = RootAncestor;
if (root != null && root.Manager != null)
{
root.Manager.QueueMeasure(this);
}
}
protected void WithChildAt(double x, double y, bool grabHasPriority, CanvasItemHandler handler)
{
CanvasItem child = FindChildAt(x, y, grabHasPriority);
if (child != null)
{
handler(child);
}
}
public void Add(CanvasItem child)
{
if (Child != null)
{
throw new InvalidOperationException("Child is already set, remove it first");
}
Child = child;
}
public void Remove(CanvasItem child)
{
if (Child != child)
{
throw new InvalidOperationException("child does not already belong to host");
}
Child = null;
}
public void QueueRender(CanvasItem item, Rect rect)
{
if (host == null)
{
return;
}
host.QueueRender(item, rect);
}
protected void InvalidateRender(Rect area)
{
CanvasItem root = RootAncestor;
if (root != null && root.Manager != null)
{
root.Manager.QueueRender(this, area);
}
}
public override bool GetTooltipMarkupAt(Point pt, out string markup, out Rect area)
{
if (base.GetTooltipMarkupAt(pt, out markup, out area))
{
return(true);
}
pt = ChildCoord(this, pt);
CanvasItem child = FindChildAt(pt, false);
return(child == null ? false : child.GetTooltipMarkupAt(ChildCoord(child, pt), out markup, out area));
}
private void OnInvalidate(Rect area)
{
CanvasItem root = RootAncestor;
if (root != null && root.Manager != null)
{
root.Manager.QueueRender(this, area);
}
else
{
Hyena.Log.WarningFormat("Asked to invalidate {0} for {1} but no CanvasManager!", area, this);
}
}
public virtual void Apply(CanvasItem item, Cairo.Context cr)
{
}
public void Remove(CanvasItem child)
{
if (Child != child) {
throw new InvalidOperationException ("child does not already belong to host");
}
Child = null;
}
Point ChildCoord(CanvasItem item, Point pt)
{
return(new Point(pt.X - item.Allocation.X, pt.Y - item.Allocation.Y));
}
public void Add(CanvasItem child)
{
if (Child != null) {
throw new InvalidOperationException ("Child is already set, remove it first");
}
Child = child;
}
public void QueueRender(CanvasItem item, Rect rect)
{
double x = Allocation.X;
double y = Allocation.Y;
double w, h;
if (rect.IsEmpty) {
w = item.Allocation.Width;
h = item.Allocation.Height;
} else {
x += rect.X;
y += rect.Y;
w = rect.Width;
h = rect.Height;
}
while (item != null) {
x += item.ContentAllocation.X;
y += item.ContentAllocation.Y;
item = item.Parent;
}
QueueDrawArea (
(int)Math.Floor (x),
(int)Math.Floor (y),
(int)Math.Ceiling (w),
(int)Math.Ceiling (h)
);
}
public virtual void Apply(CanvasItem item, Cairo.Context cr)
{
}
public void QueueMeasure(CanvasItem item)
{
item.Measure (item.ContentSize);
}
public void QueueArrange(CanvasItem item)
{
item.Arrange();
}
public void QueueRender(Hyena.Gui.Canvas.CanvasItem item, Rect rect)
{
QueueDirtyRegion(rect);
}
public void QueueArrange(CanvasItem item)
{
item.Arrange ();
}
private Point ChildCoord (CanvasItem item, Point pt)
{
return new Point (pt.X - item.Allocation.X, pt.Y - item.Allocation.Y);
}
public void QueueMeasure(CanvasItem item)
{
item.Measure(item.ContentSize);
}