private static Gdk.Rectangle [] GetRectangles(Gdk.Region region)
{
#if true
return(new Gdk.Rectangle [] { region.Clipbox });
#else
return(region.GetRectangles());
#endif
}
public static bool RectangleInsideGdkRegion(RectangleD r, Gdk.Region region)
{
r.Inflate(1.0, 1.0);
Gdk.Rectangle gdkRect = GdkRectangle(r);
Gdk.OverlapType type = region.RectIn(gdkRect);
return(type == Gdk.OverlapType.In || type == Gdk.OverlapType.Part);
}
private void PreloadRegion(Gdk.Region region, int step)
{
Gdk.Rectangle [] rects = region.GetRectangles();
if (step < 0)
{
Array.Reverse(rects);
}
foreach (Gdk.Rectangle preload in rects)
{
Preload(preload, false);
}
}
protected override bool OnMotionNotifyEvent(EventMotion evnt)
{
int pos = (int)(evnt.X * pixelRatio);
//If not moving don't do anything
if (!movingLimit)
{
}
//Moving Start time
else if (candidateStart)
{
if (candidateTN.HasDrawings && pos > 0 && pos > candidateTN.KeyFrame - 10)
{
candidateTN.StartFrame = candidateTN.KeyFrame - 10;
}
//Check not to go under start time nor 0
else if (pos > 0 && pos < candidateTN.StopFrame - 10)
{
candidateTN.StartFrame = (uint)pos;
}
HandleTimeNodeChanged(candidateTN, candidateTN.Start);
}
//Moving Stop time
else if (!candidateStart)
{
if (candidateTN.HasDrawings && pos < candidateTN.KeyFrame + 10)
{
candidateTN.StopFrame = candidateTN.KeyFrame + 10;
}
//Check not to go under start time nor 0
else if (pos < frames && pos > candidateTN.StartFrame + 10)
{
candidateTN.StopFrame = (uint)pos;
}
HandleTimeNodeChanged(candidateTN, candidateTN.Stop);
}
Gdk.Region region = GdkWindow.ClipRegion;
GdkWindow.InvalidateRegion(region, true);
GdkWindow.ProcessUpdates(true);
return(base.OnMotionNotifyEvent(evnt));
}
public void ReDraw(Area area = null)
{
if (widget.GdkWindow == null)
{
return;
}
if (area == null)
{
Gdk.Region region = widget.GdkWindow.ClipRegion;
widget.GdkWindow.InvalidateRegion(region, true);
}
else
{
widget.GdkWindow.InvalidateRect(
new Gdk.Rectangle((int)area.Start.X - 1, (int)area.Start.Y - 1,
(int)Math.Ceiling(area.Width) + 2,
(int)Math.Ceiling(area.Height) + 2),
true);
}
widget.GdkWindow.ProcessUpdates(true);
}
// Scrolling. We do this in an idle loop so we can catch up if the user scrolls quickly.
private void Scroll ()
{
int ystep = (int)(Vadjustment.Value - y_offset);
int xstep = (int)(Hadjustment.Value - x_offset);
if (xstep > 0)
xstep = Math.Max (xstep, Allocation.Width);
else
xstep = Math.Min (xstep, -Allocation.Width);
if (ystep > 0)
ystep = Math.Max (ystep, Allocation.Height);
else
ystep = Math.Min (ystep, -Allocation.Height);
Gdk.Rectangle area;
Gdk.Region offscreen = new Gdk.Region ();
/*
System.Console.WriteLine ("step ({0}, {1}) allocation ({2},{3},{4},{5})",
xstep, ystep, Hadjustment.Value, Vadjustment.Value,
Allocation.Width, Allocation.Height);
*/
/*
area = new Gdk.Rectangle (Math.Max ((int) (Hadjustment.Value + 4 * xstep), 0),
Math.Max ((int) (Vadjustment.Value + 4 * ystep), 0),
Allocation.Width,
Allocation.Height);
offscreen.UnionWithRect (area);
area = new Gdk.Rectangle (Math.Max ((int) (Hadjustment.Value + 3 * xstep), 0),
Math.Max ((int) (Vadjustment.Value + 3 * ystep), 0),
Allocation.Width,
Allocation.Height);
offscreen.UnionWithRect (area);
*/
area = new Gdk.Rectangle (Math.Max ((int) (Hadjustment.Value + 2 * xstep), 0),
Math.Max ((int) (Vadjustment.Value + 2 * ystep), 0),
Allocation.Width,
Allocation.Height);
offscreen.UnionWithRect (area);
area = new Gdk.Rectangle (Math.Max ((int) (Hadjustment.Value + xstep), 0),
Math.Max ((int) (Vadjustment.Value + ystep), 0),
Allocation.Width,
Allocation.Height);
offscreen.UnionWithRect (area);
area = new Gdk.Rectangle ((int) Hadjustment.Value,
(int) Vadjustment.Value,
Allocation.Width,
Allocation.Height);
// always load the onscreen area last to make sure it
// is first in the loading
Gdk.Region onscreen = Gdk.Region.Rectangle (area);
offscreen.Subtract (onscreen);
PreloadRegion (offscreen, ystep);
Preload (area, false);
y_offset = (int) Vadjustment.Value;
x_offset = (int) Hadjustment.Value;
}
public void ReDraw()
{
Gdk.Region region = GdkWindow.ClipRegion;
GdkWindow.InvalidateRegion(region, true);
GdkWindow.ProcessUpdates(true);
}
private void Scroll()
{
int ystep = (int)(Vadjustment.Value - y_offset);
int xstep = (int)(Hadjustment.Value - x_offset);
if (xstep > 0)
{
xstep = Math.Max(xstep, Allocation.Width);
}
else
{
xstep = Math.Min(xstep, -Allocation.Width);
}
if (ystep > 0)
{
ystep = Math.Max(ystep, Allocation.Height);
}
else
{
ystep = Math.Min(ystep, -Allocation.Height);
}
Gdk.Rectangle area;
Gdk.Region offscreen = new Gdk.Region();
/*
* Log.Debug ("step ({0}, {1}) allocation ({2},{3},{4},{5})",
* xstep, ystep, Hadjustment.Value, Vadjustment.Value,
* Allocation.Width, Allocation.Height);
*/
/*
* area = new Gdk.Rectangle (Math.Max ((int) (Hadjustment.Value + 4 * xstep), 0),
* Math.Max ((int) (Vadjustment.Value + 4 * ystep), 0),
* Allocation.Width,
* Allocation.Height);
* offscreen.UnionWithRect (area);
* area = new Gdk.Rectangle (Math.Max ((int) (Hadjustment.Value + 3 * xstep), 0),
* Math.Max ((int) (Vadjustment.Value + 3 * ystep), 0),
* Allocation.Width,
* Allocation.Height);
* offscreen.UnionWithRect (area);
*/
area = new Gdk.Rectangle(Math.Max((int)(Hadjustment.Value + 2 * xstep), 0),
Math.Max((int)(Vadjustment.Value + 2 * ystep), 0),
Allocation.Width,
Allocation.Height);
offscreen.UnionWithRect(area);
area = new Gdk.Rectangle(Math.Max((int)(Hadjustment.Value + xstep), 0),
Math.Max((int)(Vadjustment.Value + ystep), 0),
Allocation.Width,
Allocation.Height);
offscreen.UnionWithRect(area);
area = new Gdk.Rectangle((int)Hadjustment.Value,
(int)Vadjustment.Value,
Allocation.Width,
Allocation.Height);
// always load the onscreen area last to make sure it
// is first in the loading
Gdk.Region onscreen = Gdk.Region.Rectangle(area);
offscreen.Subtract(onscreen);
PreloadRegion(offscreen, ystep);
Preload(area, false);
y_offset = (int)Vadjustment.Value;
x_offset = (int)Hadjustment.Value;
}
public static void Region(Cairo.Context ctx, Gdk.Region region)
{
gdk_cairo_region(ctx.Handle, region.Handle);
}