void HandleWidgetExposeEvent(object o, Gtk.ExposeEventArgs args)
{
// The Entry's GdkWindow is the top level window onto which
// the frame is drawn; the actual text entry is drawn into a
// separate window, so we can ensure that for themes that don't
// respect HasFrame, we never ever allow the base frame drawing
// to happen
if (args.Event.Window == Widget.GdkWindow)
{
return;
}
if (Widget.Text.Length > 0)
{
return;
}
if (layout == null)
{
layout = new Pango.Layout(Widget.PangoContext);
layout.FontDescription = Widget.PangoContext.FontDescription.Copy();
}
int wh, ww;
args.Event.Window.GetSize(out ww, out wh);
int width, height;
layout.SetText(placeHolderText);
layout.GetPixelSize(out width, out height);
Gdk.GC gc = new Gdk.GC(args.Event.Window);
gc.Copy(Widget.Style.TextGC(Gtk.StateType.Normal));
Color color_a = Util.ToXwtColor(Widget.Style.Base(Gtk.StateType.Normal));
Color color_b = Util.ToXwtColor(Widget.Style.Text(Gtk.StateType.Normal));
gc.RgbFgColor = Util.ToGdkColor(color_b.BlendWith(color_a, 0.5));
args.Event.Window.DrawLayout(gc, 2, (wh - height) / 2 + 1, layout);
gc.Dispose();
}
protected override bool OnExposeEvent(Gdk.EventExpose evnt)
{
Gdk.Rectangle rect;
if (DrawBackground)
{
GdkWindow.DrawRectangle(Style.BackgroundGC(Gtk.StateType.Normal), true, Allocation.X, Allocation.Y, Allocation.Width - 1, Allocation.Height - 1);
}
if (GradientBackround)
{
rect = new Gdk.Rectangle(Allocation.X, Allocation.Y, Allocation.Width, Allocation.Height);
Color gcol = Util.ToXwtColor(Style.Background(Gtk.StateType.Normal));
using (Cairo.Context cr = Gdk.CairoHelper.Create(GdkWindow)) {
cr.NewPath();
cr.MoveTo(rect.X, rect.Y);
cr.RelLineTo(rect.Width, 0);
cr.RelLineTo(0, rect.Height);
cr.RelLineTo(-rect.Width, 0);
cr.RelLineTo(0, -rect.Height);
cr.ClosePath();
Cairo.Gradient pat = new Cairo.LinearGradient(rect.X, rect.Y, rect.X, rect.Bottom);
Cairo.Color color1 = gcol.ToCairoColor();
pat.AddColorStop(0, color1);
gcol.Light -= 0.1;
pat.AddColorStop(1, gcol.ToCairoColor());
cr.Pattern = pat;
cr.FillPreserve();
}
}
bool res = base.OnExposeEvent(evnt);
Gdk.GC borderColor;
if (color != null)
{
borderColor = new Gdk.GC(GdkWindow);
borderColor.RgbFgColor = Util.ToGdkColor(color.Value);
}
else
{
borderColor = Style.DarkGC(Gtk.StateType.Normal);
}
rect = Allocation;
for (int n = 0; n < topMargin; n++)
{
GdkWindow.DrawLine(borderColor, rect.X, rect.Y + n, rect.Right, rect.Y + n);
}
for (int n = 0; n < bottomMargin; n++)
{
GdkWindow.DrawLine(borderColor, rect.X, rect.Bottom - n, rect.Right, rect.Bottom - n);
}
for (int n = 0; n < leftMargin; n++)
{
GdkWindow.DrawLine(borderColor, rect.X + n, rect.Y, rect.X + n, rect.Bottom);
}
for (int n = 0; n < rightMargin; n++)
{
GdkWindow.DrawLine(borderColor, rect.Right - n, rect.Y, rect.Right - n, rect.Bottom);
}
if (color != null)
{
borderColor.Dispose();
}
return(res);
}