GtkSharp/sample/Scribble.cs
Gonzalo Paniagua Javier fa6e709bbb 2003-04-28 Gonzalo Paniagua Javier <gonzalo@ximian.com>
* sample/Scribble.cs: patch from Philip Van Hoof
	<spamfrommailing@freax.org> taht fixes compilation.

svn path=/trunk/gtk-sharp/; revision=14066
2003-04-28 12:41:35 +00:00

136 lines
3.6 KiB
C#

// Scribble.cs - port of Gtk+ scribble demo
//
// Author: Rachel Hestilow <hestilow@ximian.com>
//
// (c) 2002 Rachel Hestilow
namespace GtkSamples {
using Gtk;
using Gdk;
using GtkSharp;
using System;
public class Scribble {
private static Gtk.DrawingArea darea;
private static Gdk.Pixmap pixmap = null;
public static int Main (string[] args)
{
Application.Init ();
Gtk.Window win = new Gtk.Window ("Scribble demo");
win.DeleteEvent += new DeleteEventHandler (Window_Delete);
darea = new Gtk.DrawingArea ();
darea.SetSizeRequest (200, 200);
win.Add (darea);
darea.ExposeEvent += new ExposeEventHandler (ExposeEvent);
darea.ConfigureEvent += new ConfigureEventHandler (ConfigureEvent);
darea.MotionNotifyEvent += new MotionNotifyEventHandler (MotionNotifyEvent);
darea.ButtonPressEvent += new ButtonPressEventHandler (ButtonPressEvent);
darea.Events = (int)EventMask.ExposureMask |
(int)EventMask.LeaveNotifyMask |
(int)EventMask.ButtonPressMask |
(int)EventMask.PointerMotionMask |
(int)EventMask.PointerMotionHintMask;
win.ShowAll ();
Application.Run ();
return 0;
}
static void Window_Delete (object obj, DeleteEventArgs args)
{
SignalArgs sa = (SignalArgs) args;
Application.Quit ();
sa.RetVal = true;
}
static void ExposeEvent (object obj, ExposeEventArgs args)
{
Gdk.EventExpose ev = args.Event;
Gdk.Window window = ev.window;
// FIXME: mcs bug
Gdk.Rectangle area = ev.area;
// FIXME: array marshalling not done yet so no FG */
window.DrawDrawable (darea.Style.BlackGC,
pixmap,
area.x, area.y,
area.x, area.y,
area.width, area.height);
SignalArgs sa = (SignalArgs) args;
sa.RetVal = false;
}
static void ConfigureEvent (object obj, ConfigureEventArgs args)
{
Gdk.EventConfigure ev = args.Event;
Gdk.Window window = ev.window;
Gdk.Rectangle allocation = darea.Allocation;
Console.WriteLine ("Darea=[{0}]" , darea);
pixmap = new Gdk.Pixmap (window,
allocation.width,
allocation.height,
-1);
Console.WriteLine ("Darea.Style={0}", darea.Style);
pixmap.DrawRectangle (darea.Style.WhiteGC, 1, 0, 0,
allocation.width, allocation.height);
SignalArgs sa = (SignalArgs) args;
sa.RetVal = true;
}
static void DrawBrush (double x, double y)
{
Gdk.Rectangle update_rect = new Gdk.Rectangle ();
update_rect.x = (int) x - 5;
update_rect.y = (int) y - 5;
update_rect.width = 10;
update_rect.height = 10;
pixmap.DrawRectangle (darea.Style.BlackGC, 1,
update_rect.x, update_rect.y,
update_rect.width, update_rect.height);
darea.QueueDrawArea (update_rect.x, update_rect.y,
update_rect.width, update_rect.height);
}
static void ButtonPressEvent (object obj, ButtonPressEventArgs args)
{
Gdk.EventButton ev = args.Event;
if (ev.button == 1 && pixmap != null)
DrawBrush (ev.x, ev.y);
SignalArgs sa = (SignalArgs) args;
sa.RetVal = true;
}
static void MotionNotifyEvent (object obj, MotionNotifyEventArgs args)
{
int x, y;
Gdk.ModifierType state;
Gdk.EventMotion ev = args.Event;
Gdk.Window window = ev.window;
if (ev.is_hint != 0) {
Gdk.ModifierType s;
window.GetPointer (out x, out y, out s);
state = s;
} else {
x = (int) ev.x;
y = (int) ev.y;
state = (Gdk.ModifierType) ev.state;
}
if ((state & Gdk.ModifierType.Button1Mask) != 0 && pixmap != null)
DrawBrush (x, y);
SignalArgs sa = (SignalArgs) args;
sa.RetVal = true;
}
}
}