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using GLib;
using Gtk;
using System;
class CustomWidgetTest {
public static int Main (string[] args)
{
Gtk.Application.Init ();
Window win = new Window ("Custom Widget Test");
win.DeleteEvent += new DeleteEventHandler (OnQuit);
VPaned paned = new VPaned ();
CustomWidget cw = new CustomWidget ();
cw.Label = "This one contains a button";
Button button = new Button ("Ordinary button");
cw.Add (button);
paned.Pack1 (cw, true, false);
cw = new CustomWidget ();
cw.Label = "And this one a TextView";
cw.StockId = Stock.JustifyLeft;
ScrolledWindow sw = new ScrolledWindow (null, null);
sw.ShadowType = ShadowType.In;
sw.HscrollbarPolicy = PolicyType.Automatic;
sw.VscrollbarPolicy = PolicyType.Automatic;
TextView textView = new TextView ();
sw.Add (textView);
cw.Add (sw);
paned.Pack2 (cw, true, false);
win.Add (paned);
win.ShowAll ();
Gtk.Application.Run ();
return 0;
}
static void OnQuit (object sender, DeleteEventArgs args)
{
Gtk.Application.Quit ();
}
}
class CustomWidget : Bin {
private Gdk.Pixbuf icon;
private string label;
private Pango.Layout layout;
private string stockid;
public CustomWidget () : base ()
{
icon = null;
label = "CustomWidget";
layout = null;
stockid = Stock.Execute;
HasWindow = false;
}
private Gdk.Pixbuf Icon {
get {
if (icon == null)
icon = RenderIconPixbuf (stockid, IconSize.Menu);
return icon;
}
}
public string Label {
get {
return label;
}
set {
label = value;
Layout.SetText (label);
}
}
private Pango.Layout Layout {
get {
if (layout == null)
layout = CreatePangoLayout (label);
return layout;
}
}
public string StockId {
get {
return stockid;
}
set {
stockid = value;
icon = RenderIconPixbuf (stockid, IconSize.Menu);
}
}
private Gdk.Rectangle TitleArea {
get {
Gdk.Rectangle area;
area.X = Allocation.X + (int)BorderWidth;
area.Y = Allocation.Y + (int)BorderWidth;
area.Width = (Allocation.Width - 2 * (int)BorderWidth);
int layoutWidth, layoutHeight;
Layout.GetPixelSize (out layoutWidth, out layoutHeight);
area.Height = Math.Max (layoutHeight, icon.Height);
return area;
}
}
protected override bool OnDrawn (Cairo.Context cr)
{
Gdk.Rectangle titleArea = TitleArea;
Gdk.CairoHelper.SetSourcePixbuf (cr, Icon, 0, 0);
cr.Paint ();
int layout_x = icon.Width + 1;
titleArea.Width -= icon.Width - 1;
int layoutWidth, layoutHeight;
Layout.GetPixelSize (out layoutWidth, out layoutHeight);
int layout_y = (titleArea.Height - layoutHeight) / 2;
StyleContext.RenderLayout (cr, layout_x, layout_y, Layout);
return base.OnDrawn (cr);
}
protected override void OnSizeAllocated (Gdk.Rectangle allocation)
{
base.OnSizeAllocated (allocation);
int bw = (int)BorderWidth;
Gdk.Rectangle titleArea = TitleArea;
if (Child != null) {
Gdk.Rectangle childAllocation;
childAllocation.X = allocation.X + bw;
childAllocation.Y = allocation.Y + bw + titleArea.Height;
childAllocation.Width = allocation.Width - 2 * bw;
childAllocation.Height = allocation.Height - 2 * bw - titleArea.Height;
Child.SizeAllocate (childAllocation);
}
}
protected override void OnGetPreferredWidth (out int minimum_width, out int natural_width)
{
minimum_width = natural_width = (int)BorderWidth * 2 + Icon.Width + 1;
int layoutWidth, layoutHeight;
Layout.GetPixelSize (out layoutWidth, out layoutHeight);
if (Child != null && Child.Visible) {
int child_min_width, child_nat_width;
Child.GetPreferredWidth (out child_min_width, out child_nat_width);
minimum_width += Math.Max (layoutWidth, child_min_width);
natural_width += Math.Max (layoutWidth, child_nat_width);
} else {
minimum_width += layoutWidth;
natural_width += layoutWidth;
}
}
protected override void OnGetPreferredHeight (out int minimum_height, out int natural_height)
{
minimum_height = natural_height = (int)BorderWidth * 2;
int layoutWidth, layoutHeight;
Layout.GetPixelSize (out layoutWidth, out layoutHeight);
minimum_height += layoutHeight;
natural_height += layoutHeight;
if (Child != null && Child.Visible) {
int child_min_height, child_nat_height;
Child.GetPreferredHeight (out child_min_height, out child_nat_height);
minimum_height += Math.Max (layoutHeight, child_min_height);
natural_height += Math.Max (layoutHeight, child_nat_height);
}
}
}
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