X-Git-Url: http://git.bytex64.net/?a=blobdiff_plain;f=TextDisplay.cs;h=282fc7fb4435b6346c4e24220871e89c76c866a0;hb=HEAD;hp=4e753de028af45c11f848411cccf364fc857b31a;hpb=822c67be52521bd601cd01b66974bb6c0df967bf;p=Nebula.git

diff --git a/TextDisplay.cs b/TextDisplay.cs
index 4e753de..282fc7f 100644
--- a/TextDisplay.cs
+++ b/TextDisplay.cs
@@ -1,22 +1,30 @@
 using System;
+using System.Timers;
 using Cairo;
 using Pango;
+using Gdk;
 using Gtk;
 
 public class TextDisplay : DrawingArea, IKeyPress {
 	private TextDocument doc = null;
-	private Font font;
+	private Pango.Font font;
 	// FIXME: Proportional fonts?
-	private float fontwidth;
-	private float fontheight;
+	private float fontWidth;
+	private float fontHeight;
+
+	private Timer helpTimer;
+	private HelpBox controlHelp;
+	private bool showHelp;
 
 	public TextDisplay() {
 		FontDescription fd = Pango.FontDescription.FromString("Courier 12");
 		font = this.PangoContext.LoadFont(fd);
 		FontMetrics fm = font.GetMetrics(null);
-		fontheight = Pango.Units.ToPixels(fm.Ascent + fm.Descent);
-		fontwidth = fontheight * 0.5333f;
-		Console.WriteLine("Using {0} {1}pt ({2}x{3}px)", fd.Family, fd.Size, fontwidth, fontheight);
+		fontHeight = Pango.Units.ToPixels(fm.Ascent + fm.Descent);
+		fontWidth = fontHeight * 0.5333f;
+		Console.WriteLine("Using {0} {1}pt ({2}x{3}px)", fd.Family, fd.Size, fontWidth, fontHeight);
+
+		controlHelp = new HelpBox(this.PangoContext, "control_help");
 		ModifyBg(StateType.Normal, new Gdk.Color(0xFF, 0xFF, 0xFF));
 	}
 
@@ -37,14 +45,17 @@ public class TextDisplay : DrawingArea, IKeyPress {
 		gr.MoveTo(0, 0);
 		Pango.CairoHelper.ShowLayout(gr, layout);
 
-		gr.Operator = Operator.Xor;
+		gr.SetSourceRGB(0.0, 0.0, 0.0);
 		gr.NewPath();
-		gr.Rectangle((doc.cursor.x - doc.textorigin.x)*fontwidth, (doc.cursor.y - doc.textorigin.y)*fontheight, fontwidth, fontheight);
+		gr.Rectangle((doc.cursor.x - doc.textorigin.x)*fontWidth, (doc.cursor.y - doc.textorigin.y)*fontHeight, fontWidth, fontHeight);
 		gr.Fill();
+
+		if (showHelp) {
+			controlHelp.draw(gr, width, height);
+		}
         }
 
-        protected override bool OnExposeEvent(Gdk.EventExpose args)
-        {
+        protected override bool OnExposeEvent(Gdk.EventExpose args) {
                 Gdk.Window win = args.Window;                
 
 		#if OLD_SYSTEMS
@@ -74,17 +85,61 @@ public class TextDisplay : DrawingArea, IKeyPress {
 	protected override void OnSizeAllocated(Gdk.Rectangle r) {
 		base.OnSizeAllocated(r);
 		if (doc != null)
-			doc.SetPageSize((int)(r.Width / fontwidth) - 1, (int)(r.Height / fontheight) - 1);
+			doc.SetPageSize((int)(r.Width / fontWidth) - 1, (int)(r.Height / fontHeight) - 1);
 	}
 
 	public void Update() {
 		QueueDraw();
 	}
 
+	public void ShowHelp() {
+		showHelp = true;
+		helpTimer = null;
+		QueueDraw();
+	}
+
+	public void HideHelp() {
+		if (helpTimer != null) {
+			helpTimer.Stop();
+			helpTimer = null;
+		}
+		if (showHelp)
+			showHelp = false;
+		QueueDraw();
+	}
 
         [GLib.ConnectBefore ()]
         public void KeyPress(object o, KeyPressEventArgs args) {
 		if (doc == null) return;
+		if ((args.Event.State & ModifierType.ControlMask) != 0) {
+			switch(args.Event.Key) {
+			default:
+				HideHelp();
+				break;
+			}
+		} else {
+			switch(args.Event.Key) {
+			case Gdk.Key.Control_L:
+			case Gdk.Key.Control_R:
+				helpTimer = new Timer();
+				helpTimer.Elapsed += delegate(object o2, ElapsedEventArgs e) {
+					ShowHelp();
+				};
+				helpTimer.AutoReset = false;
+				helpTimer.Interval = 1000;
+				helpTimer.Start();
+				break;
+			}
+		}
 		doc.KeyPress(o, args);
 	}
+
+	public void KeyRelease(object o, KeyReleaseEventArgs e) {
+		switch(e.Event.Key) {
+		case Gdk.Key.Control_L:
+		case Gdk.Key.Control_R:
+			HideHelp();
+			break;
+		}
+	}
 }