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
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qerrormessage.h"
#ifndef QT_NO_ERRORMESSAGE
#include "qapplication.h"
#include "qcheckbox.h"
#include "qlabel.h"
#include "qlayout.h"
#include "qmessagebox.h"
#include "qpushbutton.h"
#include "qstringlist.h"
#include "qtextedit.h"
#include "qdialog_p.h"
#include "qpixmap.h"
#include "qmetaobject.h"
#include "qthread.h"
#include "qqueue.h"
#include "qset.h"
#include <stdio.h>
#include <stdlib.h>
#ifdef Q_WS_WINCE
extern bool qt_wince_is_mobile(); //defined in qguifunctions_wince.cpp
extern bool qt_wince_is_high_dpi(); //defined in qguifunctions_wince.cpp
#include "qguifunctions_wince.h"
#endif
#if defined(QT_SOFTKEYS_ENABLED)
#include <qaction.h>
#endif
#ifdef Q_WS_S60
#include "private/qt_s60_p.h"
#endif
QT_BEGIN_NAMESPACE
class QErrorMessagePrivate : public QDialogPrivate
{
Q_DECLARE_PUBLIC(QErrorMessage)
public:
QPushButton * ok;
QCheckBox * again;
QTextEdit * errors;
QLabel * icon;
#ifdef QT_SOFTKEYS_ENABLED
QAction *okAction;
#endif
QQueue<QPair<QString, QString> > pending;
QSet<QString> doNotShow;
QSet<QString> doNotShowType;
QString currentMessage;
QString currentType;
bool nextPending();
void retranslateStrings();
};
class QErrorMessageTextView : public QTextEdit
{
public:
QErrorMessageTextView(QWidget *parent)
: QTextEdit(parent) { setReadOnly(true); }
virtual QSize minimumSizeHint() const;
virtual QSize sizeHint() const;
};
QSize QErrorMessageTextView::minimumSizeHint() const
{
#ifdef Q_WS_WINCE
if (qt_wince_is_mobile())
if (qt_wince_is_high_dpi())
return QSize(200, 200);
else
return QSize(100, 100);
else
return QSize(70, 70);
#else
return QSize(50, 50);
#endif
}
QSize QErrorMessageTextView::sizeHint() const
{
#ifdef Q_WS_WINCE
if (qt_wince_is_mobile())
if (qt_wince_is_high_dpi())
return QSize(400, 200);
else
return QSize(320, 120);
else
return QSize(300, 100);
#else
#ifdef Q_WS_S60
const int smallerDimension = qMin(S60->screenHeightInPixels, S60->screenWidthInPixels);
// In S60 layout data, error messages seem to be one third of the screen height (in portrait) minus two.
return QSize(smallerDimension, smallerDimension/3-2);
#else
return QSize(250, 75);
#endif //Q_WS_S60
#endif //Q_WS_WINCE
}
/*!
\class QErrorMessage
\brief The QErrorMessage class provides an error message display dialog.
\ingroup standard-dialog
An error message widget consists of a text label and a checkbox. The
checkbox lets the user control whether the same error message will be
displayed again in the future, typically displaying the text,
"Show this message again" translated into the appropriate local
language.
For production applications, the class can be used to display messages which
the user only needs to see once. To use QErrorMessage like this, you create
the dialog in the usual way, and show it by calling the showMessage() slot or
connecting signals to it.
The static qtHandler() function installs a message handler
using qInstallMsgHandler() and creates a QErrorMessage that displays
qDebug(), qWarning() and qFatal() messages. This is most useful in
environments where no console is available to display warnings and
error messages.
In both cases QErrorMessage will queue pending messages and display
them in order, with each new message being shown as soon as the user
has accepted the previous message. Once the user has specified that a
message is not to be shown again it is automatically skipped, and the
dialog will show the next appropriate message in the queue.
The \l{dialogs/standarddialogs}{Standard Dialogs} example shows
how to use QErrorMessage as well as other built-in Qt dialogs.
\img qerrormessage.png
\sa QMessageBox, QStatusBar::showMessage(), {Standard Dialogs Example}
*/
static QErrorMessage * qtMessageHandler = 0;
static void deleteStaticcQErrorMessage() // post-routine
{
if (qtMessageHandler) {
delete qtMessageHandler;
qtMessageHandler = 0;
}
}
static bool metFatal = false;
static void jump(QtMsgType t, const char * m)
{
if (!qtMessageHandler)
return;
QString rich;
switch (t) {
case QtDebugMsg:
default:
rich = QErrorMessage::tr("Debug Message:");
break;
case QtWarningMsg:
rich = QErrorMessage::tr("Warning:");
break;
case QtFatalMsg:
rich = QErrorMessage::tr("Fatal Error:");
}
rich = QString::fromLatin1("<p><b>%1</b></p>").arg(rich);
rich += Qt::convertFromPlainText(QLatin1String(m), Qt::WhiteSpaceNormal);
// ### work around text engine quirk
if (rich.endsWith(QLatin1String("</p>")))
rich.chop(4);
if (!metFatal) {
if (QThread::currentThread() == qApp->thread()) {
qtMessageHandler->showMessage(rich);
} else {
QMetaObject::invokeMethod(qtMessageHandler,
"showMessage",
Qt::QueuedConnection,
Q_ARG(QString, rich));
}
metFatal = (t == QtFatalMsg);
}
}
/*!
Constructs and installs an error handler window with the given \a
parent.
*/
QErrorMessage::QErrorMessage(QWidget * parent)
: QDialog(*new QErrorMessagePrivate, parent)
{
Q_D(QErrorMessage);
QGridLayout * grid = new QGridLayout(this);
d->icon = new QLabel(this);
#ifndef QT_NO_MESSAGEBOX
d->icon->setPixmap(QMessageBox::standardIcon(QMessageBox::Information));
d->icon->setAlignment(Qt::AlignHCenter | Qt::AlignTop);
#endif
grid->addWidget(d->icon, 0, 0, Qt::AlignTop);
d->errors = new QErrorMessageTextView(this);
grid->addWidget(d->errors, 0, 1);
d->again = new QCheckBox(this);
d->again->setChecked(true);
grid->addWidget(d->again, 1, 1, Qt::AlignTop);
d->ok = new QPushButton(this);
#ifdef QT_SOFTKEYS_ENABLED
d->okAction = new QAction(d->ok);
d->okAction->setSoftKeyRole(QAction::PositiveSoftKey);
connect(d->okAction, SIGNAL(triggered()), this, SLOT(accept()));
addAction(d->okAction);
#endif
#if defined(Q_WS_WINCE) || defined(Q_WS_S60)
d->ok->setFixedSize(0,0);
#endif
connect(d->ok, SIGNAL(clicked()), this, SLOT(accept()));
d->ok->setFocus();
grid->addWidget(d->ok, 2, 0, 1, 2, Qt::AlignCenter);
grid->setColumnStretch(1, 42);
grid->setRowStretch(0, 42);
d->retranslateStrings();
}
/*!
Destroys the error message dialog.
*/
QErrorMessage::~QErrorMessage()
{
if (this == qtMessageHandler) {
qtMessageHandler = 0;
QtMsgHandler tmp = qInstallMsgHandler(0);
// in case someone else has later stuck in another...
if (tmp != jump)
qInstallMsgHandler(tmp);
}
}
/*! \reimp */
void QErrorMessage::done(int a)
{
Q_D(QErrorMessage);
if (!d->again->isChecked() && !d->currentMessage.isEmpty() && d->currentType.isEmpty()) {
d->doNotShow.insert(d->currentMessage);
}
if (!d->again->isChecked() && !d->currentType.isEmpty()) {
d->doNotShowType.insert(d->currentType);
}
d->currentMessage.clear();
d->currentType.clear();
if (!d->nextPending()) {
QDialog::done(a);
if (this == qtMessageHandler && metFatal)
exit(1);
}
}
/*!
Returns a pointer to a QErrorMessage object that outputs the
default Qt messages. This function creates such an object, if there
isn't one already.
*/
QErrorMessage * QErrorMessage::qtHandler()
{
if (!qtMessageHandler) {
qtMessageHandler = new QErrorMessage(0);
qAddPostRoutine(deleteStaticcQErrorMessage); // clean up
qtMessageHandler->setWindowTitle(QApplication::applicationName());
qInstallMsgHandler(jump);
}
return qtMessageHandler;
}
/*! \internal */
bool QErrorMessagePrivate::nextPending()
{
while (!pending.isEmpty()) {
QPair<QString,QString> pendingMessage = pending.dequeue();
QString message = pendingMessage.first;
QString type = pendingMessage.second;
if (!message.isEmpty() && ((type.isEmpty() && !doNotShow.contains(message)) || (!type.isEmpty() && !doNotShowType.contains(type)))) {
#ifndef QT_NO_TEXTHTMLPARSER
errors->setHtml(message);
#else
errors->setPlainText(message);
#endif
currentMessage = message;
currentType = type;
return true;
}
}
return false;
}
/*!
Shows the given message, \a message, and returns immediately. If the user
has requested for the message not to be shown again, this function does
nothing.
Normally, the message is displayed immediately. However, if there are
pending messages, it will be queued to be displayed later.
*/
void QErrorMessage::showMessage(const QString &message)
{
Q_D(QErrorMessage);
if (d->doNotShow.contains(message))
return;
d->pending.enqueue(qMakePair(message,QString()));
if (!isVisible() && d->nextPending())
show();
}
/*!
\since 4.5
\overload
Shows the given message, \a message, and returns immediately. If the user
has requested for messages of type, \a type, not to be shown again, this
function does nothing.
Normally, the message is displayed immediately. However, if there are
pending messages, it will be queued to be displayed later.
\sa showMessage()
*/
void QErrorMessage::showMessage(const QString &message, const QString &type)
{
Q_D(QErrorMessage);
if (d->doNotShow.contains(message) && d->doNotShowType.contains(type))
return;
d->pending.push_back(qMakePair(message,type));
if (!isVisible() && d->nextPending())
show();
}
/*!
\reimp
*/
void QErrorMessage::changeEvent(QEvent *e)
{
Q_D(QErrorMessage);
if (e->type() == QEvent::LanguageChange) {
d->retranslateStrings();
}
QDialog::changeEvent(e);
}
void QErrorMessagePrivate::retranslateStrings()
{
again->setText(QErrorMessage::tr("&Show this message again"));
ok->setText(QErrorMessage::tr("&OK"));
#ifdef QT_SOFTKEYS_ENABLED
okAction->setText(ok->text());
#endif
}
/*!
\fn void QErrorMessage::message(const QString & message)
Use showMessage(\a message) instead.
*/
QT_END_NAMESPACE
#endif // QT_NO_ERRORMESSAGE
|