Differential D28122 Diff 78251 src/kfontchooserdialog.cpp

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src/kfontchooserdialog.cpp

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1​/*
2​Copyright (C) 1996 Bernd Johannes Wuebben <wuebben@kde.org>
3​Copyright (c) 1999 Preston Brown <pbrown@kde.org>
4​Copyright (c) 1999 Mario Weilguni <mweilguni@kde.org>
5​
6​This library is free software; you can redistribute it and/or
7​modify it under the terms of the GNU Library General Public
8​License as published by the Free Software Foundation; either
9​version 2 of the License, or (at your option) any later version.
10​
11​This library is distributed in the hope that it will be useful,
12​but WITHOUT ANY WARRANTY; without even the implied warranty of
13​MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14​Library General Public License for more details.
15​
16​You should have received a copy of the GNU Library General Public License
17​along with this library; see the file COPYING.LIB. If not, write to
18​the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19​Boston, MA 02110-1301, USA.
20​*/
21​
22​#include "kfontchooserdialog.h"
23​
24​#include <QDialogButtonBox>
25​#include <QPushButton>
26​#include <QVBoxLayout>
27​
28​class KFontChooserDialogPrivate
29​{
30​public:
31​ KFontChooserDialogPrivate()
32​ : chooser(nullptr)
33​ {
34​ }
35​
36​ KFontChooser *chooser;
37​};
38​
39​KFontChooserDialog::KFontChooserDialog(const KFontChooser::DisplayFlags &flags, QWidget *parent)
dfaureUnsubmitted
Done

Should be static. Even file-static (move the implementation further up in the file).

dfaure: Should be static. Even file-static (move the implementation further up in the file).
40​ : QDialog(parent),
41​ d(new KFontChooserDialogPrivate)
42​{
43​ setWindowTitle(tr("Select Font"));
44​ d->chooser = new KFontChooser(this, flags, QStringList(), 8, nullptr);
45​ d->chooser->setObjectName(QStringLiteral("fontChooser"));
46​
47​ connect(d->chooser, &KFontChooser::fontSelected, this, &KFontChooserDialog::fontSelected);
48​
49​ QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
50​ QVBoxLayout *mainLayout = new QVBoxLayout;
51​ setLayout(mainLayout);
52​ mainLayout->addWidget(d->chooser);
53​ mainLayout->addWidget(buttonBox);
54​
55​ connect(buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept);
56​ connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject);
57​}
58​
59​KFontChooserDialog::~KFontChooserDialog()
60​{
61​ delete d;
62​}
63​
64​void KFontChooserDialog::setFont(const QFont &font, bool onlyFixed)
65​{
66​ d->chooser->setFont(font, onlyFixed);
67​}
68​
69​QFont KFontChooserDialog::font() const
70​{
71​ return d->chooser->font();
72​}
73​
74​// If the styleName property is set for a QFont, using setBold(true) would
75​// lead to Qt using an "emboldended"/synthetic font style instead of using
76​// the bold style provided by the font itself; the latter looks better than
77​// the former, also accorgin to upstream, the styleName property is useful
78​// for fancy font styles, so there is no point in setting it for "Regular"
79​// fonts. For more details see:
80​// https://bugreports.qt.io/browse/QTBUG-63792
81​// https://bugs.kde.org/show_bug.cgi?id=378523
82​static void stripRegularStyleName(QFont &font)
dfaureUnsubmitted
Done

not needed, exec() makes it modal anyway

dfaure: not needed, exec() makes it modal anyway
83​{
84​ if (font.weight() == QFont::Normal
85​ && (font.styleName() == QLatin1String("Regular")
86​ || font.styleName() == QLatin1String("Normal")
dfaureUnsubmitted
Done

const

dfaure: const
87​ || font.styleName() == QLatin1String("Book")
88​ || font.styleName() == QLatin1String("Roman"))) {
89​ font.setStyleName(QString());
90​ }
91​}
92​
93​// static
94​int KFontChooserDialog::getFontDiff(QFont &theFont, KFontChooser::FontDiffFlags &diffFlags,
mevenUnsubmitted
Not Done

Shouldn't this be not commented

meven: Shouldn't this be not commented
ahmadsamirAuthorUnsubmitted
Not Done

IIUC, if a function is declared static inside the class body (e.g. in the header file), the static keyword can't be repeated when it's defined outside the class body.

ahmadsamir: IIUC, if a function is declared static inside the class body (e.g. in the header file), the…
95​ const KFontChooser::DisplayFlags &flags, QWidget *parent)
96​{
97​ KFontChooserDialog dlg(flags | KFontChooser::ShowDifferences, parent);
98​ dlg.setObjectName(QStringLiteral("Font Selector"));
kossebauUnsubmitted
Not Done

Is having dialog objects on the stack a good idea?

What if the application gets closed while the dialog is open, would that not crash?

At least at some point people thought it was not a good idea, see https://blogs.kde.org/node/3919

kossebau: Is having dialog objects on the stack a good idea? What if the application gets closed while…
ahmadsamirAuthorUnsubmitted
Not Done

hmmm..... dfaure knows more about exec() and event loops more than me. @dfaure WDYT?

ahmadsamir: hmmm..... dfaure knows more about exec() and event loops more than me. @dfaure WDYT?
dfaureUnsubmitted
Not Done

The theoretical answer is yes, this would crash. But note that the user cannot just close the application by clicking somewhere while a modal dialog is up. This requires much more subtle interaction like a DBus call.

There are a million modal dialogs out there created on the stack, but sure, if you want to be pedantic, use QPointer, new (and manual delete, for lack of a proper smart pointer for this)...

(or we could set WA_DeleteOnClose instead of the manual delete? I just added a comment to the blog about that)

dfaure: The theoretical answer is yes, this would crash. But note that the user cannot just close the…
ahmadsamirAuthorUnsubmitted
Not Done

OK, given how many modal dialogs are out there, I'll leave it as is.

ahmadsamir: OK, given how many modal dialogs are out there, I'll leave it as is.
99​ dlg.setFont(theFont, flags & KFontChooser::FixedFontsOnly);
dfaureUnsubmitted
Done

same

dfaure: same
100​
101​ const int result = dlg.exec();
102​ if (result == Accepted) {
103​ theFont = dlg.d->chooser->font();
104​ diffFlags = dlg.d->chooser->fontDiffFlags();
105​ stripRegularStyleName(theFont);
106​ }
107​ return result;
108​}
109​
110​// static
111​int KFontChooserDialog::getFont(QFont &theFont, const KFontChooser::DisplayFlags &flags, QWidget *parent)
mevenUnsubmitted
Not Done

Shouldn't this be not commented

meven: Shouldn't this be not commented
112​{
113​ KFontChooserDialog dlg(flags, parent);
114​ dlg.setObjectName(QStringLiteral("Font Selector"));
115​ dlg.setFont(theFont, flags & KFontChooser::FixedFontsOnly);
116​
117​ const int result = dlg.exec();
118​ if (result == Accepted) {
119​ theFont = dlg.d->chooser->font();
120​ stripRegularStyleName(theFont);
121​ }
122​ return result;
123​}