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