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
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
|
package org.eclipse.swt.widgets;
/*
* Licensed Materials - Property of IBM,
* (c) Copyright IBM Corp. 1998, 2001 All Rights Reserved
*/
import org.eclipse.swt.internal.photon.*;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;
public class ScrollBar extends Widget {
Scrollable parent;
ScrollBar (Scrollable parent, int style, int handle) {
super (parent, checkStyle (style));
this.parent = parent;
this.handle = handle;
createWidget (0);
}
ScrollBar (Scrollable parent, int style) {
super (parent, checkStyle (style));
this.parent = parent;
createWidget (0);
}
static int checkStyle (int style) {
return checkBits (style, SWT.HORIZONTAL, SWT.VERTICAL, 0, 0, 0, 0);
}
public void addSelectionListener (SelectionListener listener) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener(listener);
addListener (SWT.Selection,typedListener);
addListener (SWT.DefaultSelection,typedListener);
}
void createHandle (int index) {
if (handle != 0) return;
int parentHandle = parent.scrolledHandle;
int [] args = {
OS.Pt_ARG_MAXIMUM, 100, 0,
OS.Pt_ARG_PAGE_INCREMENT, 10, 0,
OS.Pt_ARG_SLIDER_SIZE, 10, 0,
OS.Pt_ARG_ORIENTATION, (style & SWT.HORIZONTAL) != 0 ? OS.Pt_HORIZONTAL : OS.Pt_VERTICAL, 0,
OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS,
};
handle = OS.PtCreateWidget (OS.PtScrollbar (), parentHandle, args.length / 3, args);
if (handle == 0) error (SWT.ERROR_NO_HANDLES);
OS.PtExtentWidget (handle);
}
public Display getDisplay () {
Scrollable parent = this.parent;
if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
return parent.getDisplay ();
}
public boolean getEnabled () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_FLAGS, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return (args [1] & OS.Pt_BLOCKED) == 0;
}
public int getIncrement () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_INCREMENT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public int getMinimum () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_MINIMUM, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public int getMaximum () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_MAXIMUM, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public int getPageIncrement () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_PAGE_INCREMENT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public Scrollable getParent () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return parent;
}
public int getSelection () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_SCROLL_POSITION, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public Point getSize () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_WIDTH, 0, 0, OS.Pt_ARG_HEIGHT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return new Point (args [1], args [4]);
}
public int getThumb () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_SLIDER_SIZE, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public boolean getVisible () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int topHandle = topHandle ();
int [] args = {OS.Pt_ARG_FLAGS, 0, 0};
OS.PtGetResources (topHandle, args.length / 3, args);
return (args [1] & OS.Pt_DELAY_REALIZE) == 0;
}
void hookEvents () {
int windowProc = getDisplay ().windowProc;
OS.PtAddCallback (handle, OS.Pt_CB_SCROLL_MOVE, windowProc, SWT.Selection);
}
public boolean isEnabled () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return getEnabled () && parent.isEnabled ();
}
public boolean isVisible () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return OS.PtWidgetIsRealized (handle);
}
int processSelection (int info) {
if (info == 0) return OS.Pt_CONTINUE;
PtCallbackInfo_t cbinfo = new PtCallbackInfo_t ();
OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof);
if (cbinfo.cbdata == 0) return OS.Pt_CONTINUE;
PtScrollbarCallback_t cb = new PtScrollbarCallback_t ();
OS.memmove (cb, cbinfo.cbdata, PtScrollbarCallback_t.sizeof);
Event event = new Event ();
switch (cb.action) {
case OS.Pt_SCROLL_DRAGGED:
event.detail = SWT.DRAG;
break;
case OS.Pt_SCROLL_TO_MIN:
event.detail = SWT.HOME;
break;
case OS.Pt_SCROLL_TO_MAX:
event.detail = SWT.END;
break;
case OS.Pt_SCROLL_INCREMENT:
event.detail = SWT.ARROW_DOWN;
break;
case OS.Pt_SCROLL_DECREMENT :
event.detail = SWT.ARROW_UP;
break;
case OS.Pt_SCROLL_PAGE_DECREMENT:
event.detail = SWT.PAGE_UP;
break;
case OS.Pt_SCROLL_PAGE_INCREMENT:
event.detail = SWT.PAGE_DOWN;
break;
}
sendEvent(SWT.Selection, event);
return OS.Pt_CONTINUE;
}
public void removeSelectionListener (SelectionListener listener) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Selection, listener);
eventTable.unhook (SWT.DefaultSelection,listener);
}
void setBounds (int x, int y, int width, int height) {
PhArea_t area = new PhArea_t ();
area.pos_x = (short) x;
area.pos_y = (short) y;
area.size_w = (short) (Math.max (width, 0));
area.size_h = (short) (Math.max (height, 0));
int ptr = OS.malloc (PhArea_t.sizeof);
OS.memmove (ptr, area, PhArea_t.sizeof);
int [] args = {OS.Pt_ARG_AREA, ptr, 0};
OS.PtSetResources (handle, args.length / 3, args);
OS.free (ptr);
}
public void setEnabled (boolean enabled) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {
OS.Pt_ARG_FLAGS, enabled ? 0 : OS.Pt_BLOCKED, OS.Pt_BLOCKED,
OS.Pt_ARG_FLAGS, enabled ? 0 : OS.Pt_GHOST, OS.Pt_GHOST,
};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setIncrement (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_INCREMENT, value, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setMaximum (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_MAXIMUM, value - 1, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setMinimum (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_MINIMUM, value, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setPageIncrement (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_PAGE_INCREMENT, value, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setSelection (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_SCROLL_POSITION, value, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setThumb (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_SLIDER_SIZE, value, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setValues (int selection, int minimum, int maximum, int thumb, int increment, int pageIncrement) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (selection < 0) return;
if (minimum < 0) return;
if (maximum < 0) return;
if (thumb < 1) return;
if (maximum - minimum - thumb < 0) return;
if (increment < 1) return;
if (pageIncrement < 1) return;
int [] args = {
OS.Pt_ARG_SCROLL_POSITION, selection, 0,
OS.Pt_ARG_INCREMENT, increment, 0,
OS.Pt_ARG_PAGE_INCREMENT, pageIncrement, 0,
OS.Pt_ARG_SLIDER_SIZE, thumb, 0,
OS.Pt_ARG_MINIMUM, minimum, 0,
OS.Pt_ARG_MAXIMUM, maximum - 1, 0,
};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setVisible (boolean visible) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {
OS.Pt_ARG_FLAGS, visible ? 0 : OS.Pt_DELAY_REALIZE, OS.Pt_DELAY_REALIZE,
};
OS.PtSetResources (handle, args.length / 3, args);
if (visible) {
sendEvent (SWT.Show);
OS.PtRealizeWidget (handle);
parent.resizeClientArea ();
} else {
OS.PtUnrealizeWidget (handle);
parent.resizeClientArea ();
sendEvent(SWT.Hide);
}
}
}
|
