void HandleDrawn(object o, Gtk.DrawnArgs args)
{
using (var graphics = new Graphics(Widget.Generator, new GraphicsHandler(args.Cr, Control.CreatePangoContext(), false))) {
Rectangle rect = new Rectangle(this.Size); //ev.Region.Clipbox.ToEto ();
Widget.OnPaint(new PaintEventArgs(graphics, rect));
}
}
void HandleDrawn(object o, Gtk.DrawnArgs args)
{
var gc = Widget.StyleContext.GetBackgroundColor(Widget.StateFlags);
args.Cr.Rectangle(0, 0, Widget.Allocation.Width, Widget.Allocation.Height);
args.Cr.SetSourceColor(gc.ToCairoColor());
args.Cr.Fill();
}
public void HandleDrawn(object o, Gtk.DrawnArgs args)
{
var h = Handler;
using (var graphics = new Graphics(new GraphicsHandler(args.Cr, h.Control.CreatePangoContext(), false)))
{
h.Callback.OnPaint(h.Widget, new PaintEventArgs(graphics, new Rectangle(h.Size)));
}
}
public void HandleDrawn(object o, Gtk.DrawnArgs args)
{
var h = Handler;
var handler = new GraphicsHandler(args.Cr, h.Control.CreatePangoContext(), false);
#endif
using (var graphics = new Graphics(handler))
{
var widgetSize = new Size(h.Control.Allocation.Width, h.Control.Allocation.Height);
var imageSize = (SizeF)h.image.Size;
var scaleWidth = widgetSize.Width / imageSize.Width;
var scaleHeight = widgetSize.Height / imageSize.Height;
imageSize *= Math.Min(scaleWidth, scaleHeight);
var location = new PointF((widgetSize.Width - imageSize.Width) / 2, (widgetSize.Height - imageSize.Height) / 2);
var destRect = new Rectangle(Point.Round(location), Size.Truncate(imageSize));
graphics.DrawImage(h.image, destRect);
}
}
public void HandleDrawn(object o, Gtk.DrawnArgs args)
{
var h = Handler;
var allocation = h.Control.Allocation.Size;
args.Cr.Rectangle(new Cairo.Rectangle(0, 0, allocation.Width, allocation.Height));
args.Cr.Clip();
Gdk.Rectangle rect = new Gdk.Rectangle();
if (!GraphicsHandler.GetClipRectangle(args.Cr, ref rect))
{
rect = new Gdk.Rectangle(Gdk.Point.Zero, allocation);
}
#if old
using (var graphics = new Graphics(new GraphicsHandler(args.Cr, h.Control.CreatePangoContext(), false)))
{
if (h.SelectedBackgroundColor != null)
{
graphics.Clear(h.SelectedBackgroundColor.Value);
}
h.Callback.OnPaint(h.Widget, new PaintEventArgs(graphics, rect.ToEto()));
}
#else
//CreatePangoContext - creates a new one each time. local owned
//GetPangoContext - gets a context owned by the control
// only get the pango context once, using a context owned by the widget
if (Pcontext == null)
{
Pcontext = h.Control.GetPangoContext();
}
using (var graphics = new Graphics(new GraphicsHandler(args.Cr, Pcontext, false)))
{
if (h.SelectedBackgroundColor != null)
{
graphics.Clear(h.SelectedBackgroundColor.Value);
}
h.Callback.OnPaint(h.Widget, new PaintEventArgs(graphics, rect.ToEto()));
}
#endif
}
void DrawOverlay(System.Object o, Gtk.DrawnArgs args)
{
var imageViewWidget = this.drawingArea as ImageViewWidget;
if (imageViewWidget == null || imageViewWidget.Image == null || !this.IsActive || !this.UpdateFade(imageViewWidget))
{
return;
}
this.canvasSize = new Cairo.PointD(this.drawingArea.Allocation.Width, this.drawingArea.Allocation.Height);
var image = imageViewWidget.Image;
bool redrawOverlay =
this.canvasSize.X != this.lastCanvasSize.X ||
this.canvasSize.Y != this.lastCanvasSize.Y ||
image != this.lastImage ||
image.NeedsOverlayRedrawn;
if (redrawOverlay)
{
var overlaySurface = new Cairo.ImageSurface(Cairo.Format.ARGB32, (int)this.canvasSize.X, (int)this.canvasSize.Y);
var overlayCr = new Cairo.Context(overlaySurface);
this.RedrawOverlay(overlayCr, image);
overlayCr.Dispose();
if (this.overlaySurface != null)
{
this.overlaySurface.Dispose();
}
this.overlaySurface = overlaySurface;
image.NeedsOverlayRedrawn = false;
}
args.Cr.SetSourceSurface(this.overlaySurface, 0, 0);
args.Cr.PaintWithAlpha(this.currentFadeOpacity);
this.lastCanvasSize = this.canvasSize;
this.lastImage = image;
}
public void HandleDrawn(object o, Gtk.DrawnArgs args)
{
var h = Handler;
var allocation = h.Control.Allocation.Size;
args.Cr.Rectangle(new Cairo.Rectangle(0, 0, allocation.Width, allocation.Height));
args.Cr.Clip();
Gdk.Rectangle rect = new Gdk.Rectangle();
if (!GraphicsHandler.GetClipRectangle(args.Cr, ref rect))
{
rect = new Gdk.Rectangle(Gdk.Point.Zero, allocation);
}
using (var graphics = new Graphics(new GraphicsHandler(args.Cr, h.Control.PangoContext, false)))
{
if (h.SelectedBackgroundColor != null)
{
graphics.Clear(h.SelectedBackgroundColor.Value);
}
h.Callback.OnPaint(h.Widget, new PaintEventArgs(graphics, rect.ToEto()));
}
}
static bool DrawnSignalCallback (IntPtr inst, IntPtr arg0, IntPtr gch)
{
Gtk.DrawnArgs args = new Gtk.DrawnArgs ();
Cairo.Context cr = null;
try {
GLib.Signal sig = ((GCHandle) gch).Target as GLib.Signal;
if (sig == null)
throw new Exception("Unknown signal GC handle received " + gch);
args.Args = new object[1];
cr = new Cairo.Context (arg0, false);
args.Args[0] = cr;
Gtk.DrawnHandler handler = (Gtk.DrawnHandler) sig.Handler;
handler (GLib.Object.GetObject (inst), args);
} catch (Exception e) {
GLib.ExceptionManager.RaiseUnhandledException (e, false);
} finally {
var disposable_cr = cr as IDisposable;
if (disposable_cr != null)
disposable_cr.Dispose ();
}
try {
if (args.RetVal == null)
return false;
return ((bool) args.RetVal);
} catch (Exception) {
Exception ex = new Exception ("args.RetVal or 'out' property unset or set to incorrect type in Gtk.DrawnHandler callback");
GLib.ExceptionManager.RaiseUnhandledException (ex, true);
// NOTREACHED: above call doesn't return.
throw ex;
}
}
