gtk-sharp3-examples 2.99.2-2ubuntu1 / usr / share / gtk-sharp3-examples / ScribbleXInput.cs

This file is indexed.

/usr/share/gtk-sharp3-examples/ScribbleXInput.cs is in gtk-sharp3-examples 2.99.2-2ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below. 

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
// ScribbleXInput.cs - port of Gtk+ scribble demo 
//
// Author: Manuel V. Santos <mvsl@telefonica.net> 
//
// (c) 2002 Rachel Hestilow
// (c) 2004 Manuel V. Santos

namespace GtkSamples {

	using Gtk;
	using Gdk;
	using System;

	public class ScribbleXInput {
		private static Gtk.Window win;
		private static Gtk.VBox vBox;
		private static Gtk.Button inputButton;
		private static Gtk.Button quitButton;
		private static Gtk.DrawingArea darea;
		private static Gdk.Pixmap pixmap = null;
		private static Gtk.InputDialog inputDialog = null;

		public static int Main (string[] args) {
			Application.Init ();
			win = new Gtk.Window ("Scribble XInput Demo");
			win.DeleteEvent += new DeleteEventHandler (WindowDelete);

			vBox = new VBox (false, 0);
			win.Add (vBox);

			darea = new Gtk.DrawingArea ();
			darea.SetSizeRequest (200, 200);
			darea.ExtensionEvents=ExtensionMode.Cursor;
			vBox.PackStart (darea, true, true, 0);
			
			darea.ExposeEvent += new ExposeEventHandler (ExposeEvent);
			darea.ConfigureEvent += new ConfigureEventHandler (ConfigureEvent);
			darea.MotionNotifyEvent += new MotionNotifyEventHandler (MotionNotifyEvent);
			darea.ButtonPressEvent += new ButtonPressEventHandler (ButtonPressEvent);
			darea.Events = EventMask.ExposureMask | EventMask.LeaveNotifyMask |
				       EventMask.ButtonPressMask | EventMask.PointerMotionMask;

			inputButton = new Button("Input Dialog");
			vBox.PackStart (inputButton, false, false, 0);

			inputButton.Clicked += new EventHandler (InputButtonClicked);

			quitButton = new Button("Quit");
			vBox.PackStart (quitButton, false, false, 0);

			quitButton.Clicked += new EventHandler (QuitButtonClicked);
			
			win.ShowAll ();
			Application.Run ();
			return 0;
		}

		static void InputButtonClicked (object obj, EventArgs args) {
			if (inputDialog == null) {
				inputDialog = new InputDialog ();
				inputDialog.SaveButton.Hide ();
				inputDialog.CloseButton.Clicked += new EventHandler(InputDialogClose);
				inputDialog.DeleteEvent += new DeleteEventHandler(InputDialogDelete);
			}
			inputDialog.Present ();
		}

		static void QuitButtonClicked (object obj, EventArgs args) {
			Application.Quit ();
		}

		static void WindowDelete (object obj, DeleteEventArgs args) {
			Application.Quit ();
			args.RetVal = true;
		}

		static void InputDialogClose (object obj, EventArgs args) {
			inputDialog.Hide ();
		}

		static void InputDialogDelete (object obj, DeleteEventArgs args) {
			inputDialog.Hide ();
			args.RetVal = true;
		}

		static void ExposeEvent (object obj, ExposeEventArgs args) {
			Gdk.Rectangle area = args.Event.Area;
			args.Event.Window.DrawDrawable (darea.Style.ForegroundGC(darea.State),
							pixmap,
							area.X, area.Y,
							area.X, area.Y,
							area.Width, area.Height);

			args.RetVal = false;
		}
		
		static void ConfigureEvent (object obj, ConfigureEventArgs args) {
			Gdk.EventConfigure ev = args.Event;
			Gdk.Window window = ev.Window;
			Gdk.Rectangle allocation = darea.Allocation;

			pixmap = new Gdk.Pixmap (window, allocation.Width, allocation.Height, -1);
			pixmap.DrawRectangle (darea.Style.WhiteGC, true, 0, 0,
					      allocation.Width, allocation.Height);

			args.RetVal = true;
		}

		static void DrawBrush (Widget widget, InputSource source, 
					double x, double y, double pressure) {
			Gdk.GC gc;
			switch (source) {
				case InputSource.Mouse:
					gc = widget.Style.BlackGC;
					break;
				case InputSource.Pen:
					gc = widget.Style.BlackGC;
					break;
				case InputSource.Eraser:
					gc = widget.Style.WhiteGC;
					break;
				default:
					gc = widget.Style.BlackGC;
					break;
    			}

			Gdk.Rectangle update_rect = new Gdk.Rectangle ();
			update_rect.X = (int) (x - 10.0d * pressure);
			update_rect.Y = (int) (y - 10.0d * pressure);
			update_rect.Width = (int) (20.0d * pressure);
			update_rect.Height = (int) (20.0d * pressure);
			
			pixmap.DrawRectangle (gc, true, 
						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) {
   				double pressure;
				ev.Device.GetAxis (ev.Axes, AxisUse.Pressure, out pressure);
 				DrawBrush ((Widget) obj, ev.Device.Source, ev.X, ev.Y, pressure);
			}
			args.RetVal = true;
		}
		
		static void MotionNotifyEvent (object obj, MotionNotifyEventArgs args) {
			Gdk.EventMotion ev = args.Event;
			Widget widget = (Widget) obj;
			if ((ev.State & Gdk.ModifierType.Button1Mask) != 0 && pixmap != null) {
   				double pressure;
				if (!ev.Device.GetAxis (ev.Axes, AxisUse.Pressure, out pressure)) {
					pressure = 0.5;
				}
 				DrawBrush (widget, ev.Device.Source, ev.X, ev.Y, pressure);
			}
			args.RetVal = true;
		}
	}
}

APT Browse - Built by Thomas Orozco.