qfileiconprovider.cpp

Absolute File Name:/home/qt/qt5_coco/qt5/qtbase/src/widgets/itemviews/qfileiconprovider.cpp
Source codeSwitch to Preprocessed file
LineSourceCount
1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtWidgets module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see https://www.qt.io/terms-conditions. For further-
15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
29** Qt Foundation. The licenses are as published by the Free Software-
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
32** information to ensure the GNU General Public License requirements will-
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and-
34** https://www.gnu.org/licenses/gpl-3.0.html.-
35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#include "qfileiconprovider.h"-
41#include "qfileiconprovider_p.h"-
42-
43#include <qapplication.h>-
44#include <qdir.h>-
45#include <qpixmapcache.h>-
46#include <private/qfunctions_p.h>-
47#include <private/qguiapplication_p.h>-
48#include <private/qicon_p.h>-
49#include <qpa/qplatformintegration.h>-
50#include <qpa/qplatformservices.h>-
51#include <qpa/qplatformtheme.h>-
52-
53#if defined(Q_OS_WIN)-
54# include <qt_windows.h>-
55# ifndef Q_OS_WINRT-
56# include <commctrl.h>-
57# include <objbase.h>-
58# endif-
#endif
#if defined(Q_OS_UNIX) && !defined(QT_NO_STYLE_GTK)
# include <private/qgtkstyle_p_p.h>#endif
60-
61QT_BEGIN_NAMESPACE-
62-
63static bool isCacheable(const QFileInfo &fi);-
64-
65class QFileIconEngine : public QPixmapIconEngine-
66{-
67public:-
68 QFileIconEngine(const QFileInfo &info, QFileIconProvider::Options opts)-
69 : QPixmapIconEngine(), m_fileInfo(info), m_fipOpts(opts)-
70 { }-
71-
72 QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state) Q_DECL_OVERRIDE-
73 {-
74 Q_UNUSED(mode);-
75 Q_UNUSED(state);-
76 QPixmap pixmap;-
77-
78 if (!size.isValid())-
79 return pixmap;-
80-
81 const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme();-
82 if (!theme)-
83 return pixmap;-
84-
85 const QString &keyBase = QLatin1String("qt_.") + m_fileInfo.suffix().toUpper();-
86-
87 bool cacheable = isCacheable(m_fileInfo);-
88 if (cacheable) {-
89 QPixmapCache::find(keyBase + QString::number(size.width()), pixmap);-
90 if (!pixmap.isNull())-
91 return pixmap;-
92 }-
93-
94 QPlatformTheme::IconOptions iconOptions;-
95 if (m_fipOpts & QFileIconProvider::DontUseCustomDirectoryIcons)-
96 iconOptions |= QPlatformTheme::DontUseCustomDirectoryIcons;-
97-
98 pixmap = theme->fileIconPixmap(m_fileInfo, size, iconOptions);-
99 if (!pixmap.isNull()) {-
100 if (cacheable)-
101 QPixmapCache::insert(keyBase + QString::number(size.width()), pixmap);-
102 }-
103-
104 return pixmap;-
105 }-
106-
107 QList<QSize> availableSizes(QIcon::Mode mode = QIcon::Normal, QIcon::State state = QIcon::Off) const Q_DECL_OVERRIDE-
108 {-
109 Q_UNUSED(mode);-
110 Q_UNUSED(state);-
111 static QList<QSize> sizes;-
112 static QPlatformTheme *theme = 0;-
113 if (!theme) {-
114 theme = QGuiApplicationPrivate::platformTheme();-
115 if (!theme)-
116 return sizes;-
117-
118 QList<int> themeSizes = theme->themeHint(QPlatformTheme::IconPixmapSizes).value<QList<int> >();-
119 if (themeSizes.isEmpty())-
120 return sizes;-
121-
122 sizes.reserve(themeSizes.count());-
123 foreach (int size, themeSizes)-
124 sizes << QSize(size, size);-
125 }-
126 return sizes;-
127 }-
128-
129 QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state) Q_DECL_OVERRIDE-
130 {-
131 const QList<QSize> &sizes = availableSizes(mode, state);-
132 const int numberSizes = sizes.length();-
133 if (numberSizes == 0)-
134 return QSize();-
135-
136 // Find the smallest available size whose area is still larger than the input-
137 // size. Otherwise, use the largest area available size. (We don't assume the-
138 // platform theme sizes are sorted, hence the extra logic.)-
139 const int sizeArea = size.width() * size.height();-
140 QSize actualSize = sizes.first();-
141 int actualArea = actualSize.width() * actualSize.height();-
142 for (int i = 1; i < numberSizes; ++i) {-
143 const QSize &s = sizes.at(i);-
144 const int a = s.width() * s.height();-
145 if ((sizeArea <= a && a < actualArea) || (actualArea < sizeArea && actualArea < a)) {-
146 actualSize = s;-
147 actualArea = a;-
148 }-
149 }-
150-
151 if (!actualSize.isNull() && (actualSize.width() > size.width() || actualSize.height() > size.height()))-
152 actualSize.scale(size, Qt::KeepAspectRatio);-
153-
154 return actualSize;-
155 }-
156-
157private:-
158 QFileInfo m_fileInfo;-
159 QFileIconProvider::Options m_fipOpts;-
160};-
161-
162-
163/*!-
164 \class QFileIconProvider-
165-
166 \inmodule QtWidgets-
167-
168 \brief The QFileIconProvider class provides file icons for the QDirModel and the QFileSystemModel classes.-
169*/-
170-
171/*!-
172 \enum QFileIconProvider::IconType-
173 \value Computer-
174 \value Desktop-
175 \value Trashcan-
176 \value Network-
177 \value Drive-
178 \value Folder-
179 \value File-
180*/-
181-
182-
183/*!-
184 \enum QFileIconProvider::Option-
185 \since 5.2-
186-
187 \value DontUseCustomDirectoryIcons Always use the default directory icon.-
188 Some platforms allow the user to set a different icon. Custom icon lookup-
189 cause a big performance impact over network or removable drives.-
190*/-
191-
192QFileIconProviderPrivate::QFileIconProviderPrivate(QFileIconProvider *q) :-
193 q_ptr(q), homePath(QDir::home().absolutePath())-
194{-
195}-
196-
197QIcon QFileIconProviderPrivate::getIcon(QStyle::StandardPixmap name) const-
198{-
199 switch (name) {-
200 case QStyle::SP_FileIcon:-
201 if (file.isNull())-
202 file = QApplication::style()->standardIcon(name);-
203 return file;-
204 case QStyle::SP_FileLinkIcon:-
205 if (fileLink.isNull())-
206 fileLink = QApplication::style()->standardIcon(name);-
207 return fileLink;-
208 case QStyle::SP_DirIcon:-
209 if (directory.isNull())-
210 directory = QApplication::style()->standardIcon(name);-
211 return directory;-
212 case QStyle::SP_DirLinkIcon:-
213 if (directoryLink.isNull())-
214 directoryLink = QApplication::style()->standardIcon(name);-
215 return directoryLink;-
216 case QStyle::SP_DriveHDIcon:-
217 if (harddisk.isNull())-
218 harddisk = QApplication::style()->standardIcon(name);-
219 return harddisk;-
220 case QStyle::SP_DriveFDIcon:-
221 if (floppy.isNull())-
222 floppy = QApplication::style()->standardIcon(name);-
223 return floppy;-
224 case QStyle::SP_DriveCDIcon:-
225 if (cdrom.isNull())-
226 cdrom = QApplication::style()->standardIcon(name);-
227 return cdrom;-
228 case QStyle::SP_DriveNetIcon:-
229 if (network.isNull())-
230 network = QApplication::style()->standardIcon(name);-
231 return network;-
232 case QStyle::SP_ComputerIcon:-
233 if (computer.isNull())-
234 computer = QApplication::style()->standardIcon(name);-
235 return computer;-
236 case QStyle::SP_DesktopIcon:-
237 if (desktop.isNull())-
238 desktop = QApplication::style()->standardIcon(name);-
239 return desktop;-
240 case QStyle::SP_TrashIcon:-
241 if (trashcan.isNull())-
242 trashcan = QApplication::style()->standardIcon(name);-
243 return trashcan;-
244 case QStyle::SP_DirHomeIcon:-
245 if (home.isNull())-
246 home = QApplication::style()->standardIcon(name);-
247 return home;-
248 default:-
249 return QIcon();-
250 }-
251 return QIcon();
dead code: return QIcon();
-
252}-
253-
254/*!-
255 Constructs a file icon provider.-
256*/-
257-
258QFileIconProvider::QFileIconProvider()-
259 : d_ptr(new QFileIconProviderPrivate(this))-
260{-
261}-
262-
263/*!-
264 Destroys the file icon provider.-
265-
266*/-
267-
268QFileIconProvider::~QFileIconProvider()-
269{-
270}-
271-
272/*!-
273 \since 5.2-
274 Sets \a options that affect the icon provider.-
275 \sa options()-
276*/-
277-
278void QFileIconProvider::setOptions(QFileIconProvider::Options options)-
279{-
280 Q_D(QFileIconProvider);-
281 d->options = options;-
282}-
283-
284/*!-
285 \since 5.2-
286 Returns all the options that affect the icon provider.-
287 By default, all options are disabled.-
288 \sa setOptions()-
289*/-
290-
291QFileIconProvider::Options QFileIconProvider::options() const-
292{-
293 Q_D(const QFileIconProvider);-
294 return d->options;-
295}-
296-
297/*!-
298 Returns an icon set for the given \a type.-
299*/-
300-
301QIcon QFileIconProvider::icon(IconType type) const-
302{-
303 Q_D(const QFileIconProvider);-
304 switch (type) {-
305 case Computer:-
306 return d->getIcon(QStyle::SP_ComputerIcon);-
307 case Desktop:-
308 return d->getIcon(QStyle::SP_DesktopIcon);-
309 case Trashcan:-
310 return d->getIcon(QStyle::SP_TrashIcon);-
311 case Network:-
312 return d->getIcon(QStyle::SP_DriveNetIcon);-
313 case Drive:-
314 return d->getIcon(QStyle::SP_DriveHDIcon);-
315 case Folder:-
316 return d->getIcon(QStyle::SP_DirIcon);-
317 case File:-
318 return d->getIcon(QStyle::SP_FileIcon);-
319 default:-
320 break;-
321 };-
322 return QIcon();-
323}-
324-
325static bool isCacheable(const QFileInfo &fi)-
326{-
327 if (!fi.isFile())-
328 return false;-
329-
330#ifdef Q_OS_WIN-
331 // On windows it's faster to just look at the file extensions. QTBUG-13182-
332 const QString fileExtension = fi.suffix();-
333 // Will return false for .exe, .lnk and .ico extensions-
334 return fileExtension.compare(QLatin1String("exe"), Qt::CaseInsensitive) &&-
335 fileExtension.compare(QLatin1String("lnk"), Qt::CaseInsensitive) &&-
336 fileExtension.compare(QLatin1String("ico"), Qt::CaseInsensitive);-
337#else-
338 return !fi.isExecutable() && !fi.isSymLink();-
339#endif-
340}-
341-
342QIcon QFileIconProviderPrivate::getIcon(const QFileInfo &fi) const-
343{-
344 const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme();-
345 if (!theme)-
346 return QIcon();-
347-
348 QList<int> sizes = theme->themeHint(QPlatformTheme::IconPixmapSizes).value<QList<int> >();-
349 if (sizes.isEmpty())-
350 return QIcon();-
351-
352 return QIcon(new QFileIconEngine(fi, options));-
353}-
354-
355/*!-
356 Returns an icon for the file described by \a info.-
357*/-
358-
359QIcon QFileIconProvider::icon(const QFileInfo &info) const-
360{-
361 Q_D(const QFileIconProvider);-
#if defined(Q_OS_UNIX) && !defined(QT_NO_STYLE_GTK)
const QByteArray desktopEnvironment = QGuiApplicationPrivate::platformIntegration()->services()->desktopEnvironment();
if (desktopEnvironment != QByteArrayLiteral("KDE")) {
QIcon gtkIcon = QGtkStylePrivate::getFilesystemIcon(info);if (!gtkIcon.isNull())
return gtkIcon;
}
#endif
362-
363 QIcon retIcon = d->getIcon(info);-
364 if (!retIcon.isNull())
!retIcon.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
365 return retIcon;
never executed: return retIcon;
0
366-
367 if (info.isRoot())
info.isRoot()Description
TRUEnever evaluated
FALSEnever evaluated
0
368#if defined (Q_OS_WIN) && !defined(Q_OS_WINCE) && !defined(Q_OS_WINRT)-
369 {-
370 UINT type = GetDriveType((wchar_t *)info.absoluteFilePath().utf16());-
371-
372 switch (type) {-
373 case DRIVE_REMOVABLE:-
374 return d->getIcon(QStyle::SP_DriveFDIcon);-
375 case DRIVE_FIXED:-
376 return d->getIcon(QStyle::SP_DriveHDIcon);-
377 case DRIVE_REMOTE:-
378 return d->getIcon(QStyle::SP_DriveNetIcon);-
379 case DRIVE_CDROM:-
380 return d->getIcon(QStyle::SP_DriveCDIcon);-
381 case DRIVE_RAMDISK:-
382 case DRIVE_UNKNOWN:-
383 case DRIVE_NO_ROOT_DIR:-
384 default:-
385 return d->getIcon(QStyle::SP_DriveHDIcon);-
386 }-
387 }-
388#else-
389 return d->getIcon(QStyle::SP_DriveHDIcon);
never executed: return d->getIcon(QStyle::SP_DriveHDIcon);
0
390#endif-
391-
392 if (info.isFile()) {
info.isFile()Description
TRUEnever evaluated
FALSEnever evaluated
0
393 if (info.isSymLink())
info.isSymLink()Description
TRUEnever evaluated
FALSEnever evaluated
0
394 return d->getIcon(QStyle::SP_FileLinkIcon);
never executed: return d->getIcon(QStyle::SP_FileLinkIcon);
0
395 else-
396 return d->getIcon(QStyle::SP_FileIcon);
never executed: return d->getIcon(QStyle::SP_FileIcon);
0
397 }-
398 if (info.isDir()) {
info.isDir()Description
TRUEnever evaluated
FALSEnever evaluated
0
399 if (info.isSymLink()) {
info.isSymLink()Description
TRUEnever evaluated
FALSEnever evaluated
0
400 return d->getIcon(QStyle::SP_DirLinkIcon);
never executed: return d->getIcon(QStyle::SP_DirLinkIcon);
0
401 } else {-
402 if (info.absoluteFilePath() == d->homePath) {
info.absoluteF...== d->homePathDescription
TRUEnever evaluated
FALSEnever evaluated
0
403 return d->getIcon(QStyle::SP_DirHomeIcon);
never executed: return d->getIcon(QStyle::SP_DirHomeIcon);
0
404 } else {-
405 return d->getIcon(QStyle::SP_DirIcon);
never executed: return d->getIcon(QStyle::SP_DirIcon);
0
406 }-
407 }-
408 }-
409 return QIcon();
never executed: return QIcon();
0
410}-
411-
412/*!-
413 Returns the type of the file described by \a info.-
414*/-
415-
416QString QFileIconProvider::type(const QFileInfo &info) const-
417{-
418 if (info.isRoot())-
419 return QApplication::translate("QFileDialog", "Drive");-
420 if (info.isFile()) {-
421 if (!info.suffix().isEmpty()) {-
422 //: %1 is a file name suffix, for example txt-
423 return QApplication::translate("QFileDialog", "%1 File").arg(info.suffix());-
424 }-
425 return QApplication::translate("QFileDialog", "File");-
426 }-
427-
428 if (info.isDir())-
429#ifdef Q_OS_WIN-
430 return QApplication::translate("QFileDialog", "File Folder", "Match Windows Explorer");-
431#else-
432 return QApplication::translate("QFileDialog", "Folder", "All other platforms");-
433#endif-
434 // Windows - "File Folder"-
435 // OS X - "Folder"-
436 // Konqueror - "Folder"-
437 // Nautilus - "folder"-
438-
439 if (info.isSymLink())-
440#ifdef Q_OS_MAC-
441 return QApplication::translate("QFileDialog", "Alias", "OS X Finder");-
442#else-
443 return QApplication::translate("QFileDialog", "Shortcut", "All other platforms");-
444#endif-
445 // OS X - "Alias"-
446 // Windows - "Shortcut"-
447 // Konqueror - "Folder" or "TXT File" i.e. what it is pointing to-
448 // Nautilus - "link to folder" or "link to object file", same as Konqueror-
449-
450 return QApplication::translate("QFileDialog", "Unknown");-
451}-
452-
453QT_END_NAMESPACE-
Source codeSwitch to Preprocessed file
Generated by Squish Coco Non-Commercial 4.3.0-BETA-master-30-08-2018-4cb69e9