/
Gui.cs
199 lines (170 loc) · 4.76 KB
/
Gui.cs
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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
using System;
using System.IO;
using System.Xml;
using System.Collections.Generic;
using Cairo;
using Gtk;
class DiagramArea : DrawingArea
{
private Diagram diagram;
public Diagram Diagram {
get { return diagram; }
set
{
diagram = value;
QueueDraw();
}
}
private int error_counter;
public int ErrorCounter {
get { return error_counter; }
}
private double scale_factor = 2.0;
public double ScaleFactor {
get { return scale_factor; }
set
{
scale_factor = value;
QueueDraw();
}
}
void Draw (Context cr, int width, int height)
{
cr.LineWidth = 1.0;
cr.Color = new Color(1.0, 1.0, 1.0);
cr.Rectangle(0, 0, width, height);
cr.Fill();
cr.Save();
cr.Scale(scale_factor, scale_factor);
try
{
if(diagram != null)
{
DiagramRenderer dr = new DiagramRenderer(cr, width, height, diagram);
cr.Color = new Color(0.0, 0.0, 0.0);
dr.Render();
dr.Draw();
}
}
catch
{
error_counter++;
}
cr.Restore();
}
protected override bool OnExposeEvent (Gdk.EventExpose e)
{
using(Context cr = Gdk.CairoHelper.Create (e.Window))
{
int w, h;
e.Window.GetSize (out w, out h);
Draw (cr, w, h);
}
return true;
}
}
class DiagramWin : Window
{
string fileName;
DiagramArea da;
bool auto_reload = true;
MenuBar CreateMenuBar()
{
MenuBar mb = new MenuBar();
AccelGroup agrp = new AccelGroup();
AddAccelGroup(agrp);
Menu fileMenu = new Menu();
MenuItem item = new MenuItem("_File");
item.Submenu = fileMenu;
mb.Append(item);
item = new ImageMenuItem(Stock.Quit, agrp);
item.Activated += OnMenuQuit;
fileMenu.Append(item);
Menu viewMenu = new Menu();
item = new MenuItem("_View");
item.Submenu = viewMenu;
mb.Append(item);
item = new ImageMenuItem(Stock.ZoomIn, agrp);
item.Activated += OnZoomIn;
viewMenu.Append(item);
item = new ImageMenuItem(Stock.ZoomOut, agrp);
item.Activated += OnZoomOut;
viewMenu.Append(item);
item = new ImageMenuItem(Stock.Refresh, agrp);
item.Activated += OnReload;
viewMenu.Append(item);
CheckMenuItem cmi = new CheckMenuItem("_Automatic reload");
cmi.Active = true;
cmi.Toggled += OnToggleAuto;
viewMenu.Append(cmi);
return mb;
}
public DiagramWin (string file_name) : base(file_name + " - smul")
{
this.fileName = file_name;
Diagram diagram = Program.Load(file_name);
VBox v = new VBox();
MenuBar mb = CreateMenuBar();
da = new DiagramArea();
da.Diagram = diagram;
SetDefaultSize (600, 600);
DeleteEvent += new DeleteEventHandler (OnQuit);
v.PackStart(mb, false, false, 0);
v.PackStart(da, true, true, 0);
Add(v);
ShowAll();
WatchFile();
}
void WatchFile()
{
string fullPath = System.IO.Path.GetFullPath(fileName);
string dirName = System.IO.Path.GetDirectoryName(fullPath);
string baseName = System.IO.Path.GetFileName(fullPath);
FileSystemWatcher fsw = new FileSystemWatcher(dirName);
fsw.Filter = baseName;
fsw.Changed += OnFileChanged;
fsw.EnableRaisingEvents = true;
}
void OnZoomIn(object o, EventArgs e)
{
da.ScaleFactor *= 1.2;
}
void OnZoomOut(object o, EventArgs e)
{
da.ScaleFactor /= 1.2;
}
void OnToggleAuto(object o, EventArgs e)
{
auto_reload = !auto_reload;
}
void OnFileChanged(object o, FileSystemEventArgs e)
{
// Do the work in the Gtk main loop thread
GLib.Idle.Add(new GLib.IdleHandler(FileChangedIdleHandler));
}
void OnQuit(object sender, DeleteEventArgs e)
{
Application.Quit();
}
void OnMenuQuit(object o, EventArgs e)
{
Application.Quit();
}
void Reload()
{
Diagram diagram = Program.Load(fileName);
da.Diagram = diagram;
}
bool FileChangedIdleHandler()
{
if(auto_reload)
{
Reload();
}
return false;
}
void OnReload(object o, EventArgs e)
{
Reload();
}
}