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![John Luke](/assets/img/avatar_default.png)
* sample/CustomNotebook.cs: * sample/CustomWidget.cs: use Widget.WidgetFlags prop to avoid obsolete warning svn path=/trunk/gtk-sharp/; revision=39528
183 lines
4.2 KiB
C#
183 lines
4.2 KiB
C#
using GLib;
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using Gtk;
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using System;
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class CustomWidgetTest {
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public static int Main (string[] args)
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{
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Application.Init ();
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Window win = new Window ("Custom Widget Test");
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win.DeleteEvent += new DeleteEventHandler (OnQuit);
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VPaned paned = new VPaned ();
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CustomWidget cw = new CustomWidget ();
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cw.Label = "This one contains a button";
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Button button = new Button ("Ordinary button");
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cw.Add (button);
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paned.Pack1 (cw, true, false);
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cw = new CustomWidget ();
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cw.Label = "And this one a TextView";
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cw.StockId = Stock.JustifyLeft;
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ScrolledWindow sw = new ScrolledWindow (null, null);
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sw.ShadowType = ShadowType.In;
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sw.HscrollbarPolicy = PolicyType.Automatic;
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sw.VscrollbarPolicy = PolicyType.Automatic;
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TextView textView = new TextView ();
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sw.Add (textView);
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cw.Add (sw);
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paned.Pack2 (cw, true, false);
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win.Add (paned);
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win.ShowAll ();
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Application.Run ();
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return 0;
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}
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static void OnQuit (object sender, DeleteEventArgs args)
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{
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Application.Quit ();
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}
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}
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class CustomWidget : Bin {
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internal static GType customWidgetGType;
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private Gdk.Pixbuf icon;
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private string label;
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private Pango.Layout layout;
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private string stockid;
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public CustomWidget () : base ()
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{
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icon = null;
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label = "CustomWidget";
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layout = null;
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stockid = Stock.Execute;
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WidgetFlags |= WidgetFlags.NoWindow;
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}
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private Gdk.Pixbuf Icon {
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get {
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if (icon == null)
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icon = RenderIcon (stockid, IconSize.Menu, "");
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return icon;
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}
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}
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public string Label {
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get {
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return label;
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}
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set {
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label = value;
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Layout.SetText (label);
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}
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}
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private Pango.Layout Layout {
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get {
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if (layout == null)
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layout = CreatePangoLayout (label);
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return layout;
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}
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}
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public string StockId {
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get {
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return stockid;
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}
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set {
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stockid = value;
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icon = RenderIcon (stockid, IconSize.Menu, "");
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}
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}
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private Gdk.Rectangle TitleArea {
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get {
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Gdk.Rectangle area;
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area.X = Allocation.X + (int)BorderWidth;
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area.Y = Allocation.Y + (int)BorderWidth;
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area.Width = (Allocation.Width - 2 * (int)BorderWidth);
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int layoutWidth, layoutHeight;
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Layout.GetPixelSize (out layoutWidth, out layoutHeight);
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area.Height = Math.Max (layoutHeight, icon.Height);
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return area;
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}
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}
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protected override bool OnExposeEvent (Gdk.EventExpose args)
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{
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Gdk.Rectangle exposeArea;
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Gdk.Rectangle titleArea = TitleArea;
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if (args.Area.Intersect (titleArea, out exposeArea))
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GdkWindow.DrawPixbuf (Style.BackgroundGC (State), Icon, 0, 0,
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titleArea.X, titleArea.Y, Icon.Width,
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Icon.Height, Gdk.RgbDither.None, 0, 0);
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titleArea.X += icon.Width + 1;
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titleArea.Width -= icon.Width - 1;
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if (args.Area.Intersect (titleArea, out exposeArea)) {
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int layoutWidth, layoutHeight;
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Layout.GetPixelSize (out layoutWidth, out layoutHeight);
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titleArea.Y += (titleArea.Height - layoutHeight) / 2;
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Style.PaintLayout (Style, GdkWindow, State,
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true, exposeArea, this, null,
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titleArea.X, titleArea.Y, Layout);
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}
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return base.OnExposeEvent (args);
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}
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protected override void OnRealized ()
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{
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WidgetFlags |= WidgetFlags.Realized;
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GdkWindow = ParentWindow;
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Style = Style.Attach (GdkWindow);
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}
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protected override void OnSizeAllocated (Gdk.Rectangle allocation)
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{
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base.OnSizeAllocated (allocation);
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int bw = (int)BorderWidth;
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Gdk.Rectangle titleArea = TitleArea;
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if (Child != null) {
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Gdk.Rectangle childAllocation;
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childAllocation.X = allocation.X + bw;
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childAllocation.Y = allocation.Y + bw + titleArea.Height;
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childAllocation.Width = allocation.Width - 2 * bw;
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childAllocation.Height = allocation.Height - 2 * bw - titleArea.Height;
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Child.SizeAllocate (childAllocation);
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}
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}
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protected override void OnSizeRequested (ref Requisition requisition)
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{
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requisition.Width = requisition.Height = (int)BorderWidth * 2;
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requisition.Width += Icon.Width + 1;
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int layoutWidth, layoutHeight;
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Layout.GetPixelSize (out layoutWidth, out layoutHeight);
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requisition.Height += layoutHeight;
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if (Child != null && Child.Visible) {
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Requisition childReq = Child.SizeRequest ();
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requisition.Height += childReq.Height;
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requisition.Width += Math.Max (layoutWidth, childReq.Width);
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} else {
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requisition.Width += layoutWidth;
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}
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}
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}
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