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qproxystyle.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
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6** This file is part of the QtWidgets module of the Qt Toolkit.-
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38****************************************************************************/-
39-
40#include <qstyle.h>-
41#include <private/qproxystyle_p.h>-
42#include <private/qapplication_p.h>-
43#include "qproxystyle.h"-
44#include "qstylefactory.h"-
45#include <private/qstyle_p.h>-
46-
47#if !defined(QT_NO_STYLE_PROXY) || defined(QT_PLUGIN)-
48-
49QT_BEGIN_NAMESPACE-
50-
51/*!-
52 \class QProxyStyle-
53-
54 \brief The QProxyStyle class is a convenience class that simplifies-
55 dynamically overriding QStyle elements.-
56-
57 \since 4.6-
58-
59 \inmodule QtWidgets-
60-
61 A QProxyStyle wraps a QStyle (usually the default system style) for the-
62 purpose of dynamically overriding painting or other specific style behavior.-
63-
64 The following example shows how to override the shortcut underline-
65 behavior on any platform:-
66-
67 \snippet code/src_gui_qproxystyle.cpp 1-
68-
69 Warning: The \l {QCommonStyle} {common styles} provided by Qt will-
70 respect this hint, because they call QStyle::proxy(), but there is-
71 no guarantee that QStyle::proxy() will be called for user defined-
72 or system controlled styles. It would not work on a Mac, for-
73 example, where menus are handled by the operating system.-
74-
75 \sa QStyle-
76*/-
77-
78void QProxyStylePrivate::ensureBaseStyle() const-
79{-
80 Q_Q(const QProxyStyle);-
81-
82 if (baseStyle)
baseStyleDescription
TRUEnever evaluated
FALSEnever evaluated
0
83 return;
never executed: return;
0
84-
85 if (!baseStyle && !QApplicationPrivate::styleOverride.isEmpty()) {
!baseStyleDescription
TRUEnever evaluated
FALSEnever evaluated
!QApplicationP...ride.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
86 baseStyle = QStyleFactory::create(QApplicationPrivate::styleOverride);-
87 if (baseStyle) {
baseStyleDescription
TRUEnever evaluated
FALSEnever evaluated
0
88 // If baseStyle is an instance of the same proxyStyle-
89 // we destroy it and fall back to the desktop style-
90 if (qstrcmp(baseStyle->metaObject()->className(),
qstrcmp(baseSt...ssName()) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
91 q->metaObject()->className()) == 0) {
qstrcmp(baseSt...ssName()) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
92 delete baseStyle;-
93 baseStyle = 0;-
94 }
never executed: end of block
0
95 }
never executed: end of block
0
96 }
never executed: end of block
0
97-
98 if (!baseStyle) // Use application desktop style
!baseStyleDescription
TRUEnever evaluated
FALSEnever evaluated
0
99 baseStyle = QStyleFactory::create(QApplicationPrivate::desktopStyleKey());
never executed: baseStyle = QStyleFactory::create(QApplicationPrivate::desktopStyleKey());
0
100-
101 if (!baseStyle) // Fallback to windows style
!baseStyleDescription
TRUEnever evaluated
FALSEnever evaluated
0
102 baseStyle = QStyleFactory::create(QLatin1String("windows"));
never executed: baseStyle = QStyleFactory::create(QLatin1String("windows"));
0
103-
104 baseStyle->setProxy(const_cast<QProxyStyle*>(q));-
105 baseStyle->setParent(const_cast<QProxyStyle*>(q)); // Take ownership-
106}
never executed: end of block
0
107-
108/*!-
109 Constructs a QProxyStyle object for overriding behavior in the-
110 specified \a style, or in the default native \l{QApplication::style()}-
111 {style} if \a style is not specified.-
112-
113 Ownership of \a style is transferred to QProxyStyle.-
114*/-
115QProxyStyle::QProxyStyle(QStyle *style) :-
116 QCommonStyle(*new QProxyStylePrivate())-
117{-
118 Q_D(QProxyStyle);-
119 if (style) {
styleDescription
TRUEnever evaluated
FALSEnever evaluated
0
120 d->baseStyle = style;-
121 style->setProxy(this);-
122 style->setParent(this); // Take ownership-
123 }
never executed: end of block
0
124}
never executed: end of block
0
125-
126/*!-
127 Constructs a QProxyStyle object for overriding behavior in-
128 the base style specified by style \a key, or in the current-
129 \l{QApplication::style()}{application style} if the specified-
130 style \a key is unrecognized.-
131-
132 \sa QStyleFactory::create()-
133*/-
134QProxyStyle::QProxyStyle(const QString &key) :-
135 QCommonStyle(*new QProxyStylePrivate())-
136{-
137 Q_D(QProxyStyle);-
138 QStyle *style = QStyleFactory::create(key);-
139 if (style) {
styleDescription
TRUEnever evaluated
FALSEnever evaluated
0
140 d->baseStyle = style;-
141 style->setProxy(this);-
142 style->setParent(this); // Take ownership-
143 }
never executed: end of block
0
144}
never executed: end of block
0
145-
146/*!-
147 Destroys the QProxyStyle object.-
148*/-
149QProxyStyle::~QProxyStyle()-
150{-
151}-
152-
153/*!-
154 Returns the proxy base style object. If no base style-
155 is set on the proxy style, QProxyStyle will create-
156 an instance of the application style instead.-
157-
158 \sa setBaseStyle(), QStyle-
159*/-
160QStyle *QProxyStyle::baseStyle() const-
161{-
162 Q_D (const QProxyStyle);-
163 d->ensureBaseStyle();-
164 return d->baseStyle;
never executed: return d->baseStyle;
0
165}-
166-
167/*!-
168 Sets the base style that should be proxied.-
169-
170 Ownership of \a style is transferred to QProxyStyle.-
171-
172 If style is zero, a desktop-dependant style will be-
173 assigned automatically.-
174*/-
175void QProxyStyle::setBaseStyle(QStyle *style)-
176{-
177 Q_D (QProxyStyle);-
178-
179 if (d->baseStyle && d->baseStyle->parent() == this)
d->baseStyleDescription
TRUEnever evaluated
FALSEnever evaluated
d->baseStyle->parent() == thisDescription
TRUEnever evaluated
FALSEnever evaluated
0
180 d->baseStyle->deleteLater();
never executed: d->baseStyle->deleteLater();
0
181-
182 d->baseStyle = style;-
183-
184 if (d->baseStyle) {
d->baseStyleDescription
TRUEnever evaluated
FALSEnever evaluated
0
185 d->baseStyle->setProxy(this);-
186 d->baseStyle->setParent(this);-
187 }
never executed: end of block
0
188}
never executed: end of block
0
189-
190/*! \reimp-
191 */-
192void QProxyStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const-
193{-
194 Q_D (const QProxyStyle);-
195 d->ensureBaseStyle();-
196 d->baseStyle->drawPrimitive(element, option, painter, widget);-
197}
never executed: end of block
0
198-
199/*!-
200 \reimp-
201 */-
202void QProxyStyle::drawControl(ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget) const-
203{-
204 Q_D (const QProxyStyle);-
205 d->ensureBaseStyle();-
206 d->baseStyle->drawControl(element, option, painter, widget);-
207}
never executed: end of block
0
208-
209/*! \reimp-
210 */-
211void QProxyStyle::drawComplexControl(ComplexControl control, const QStyleOptionComplex *option, QPainter *painter, const QWidget *widget) const-
212{-
213 Q_D (const QProxyStyle);-
214 d->ensureBaseStyle();-
215 d->baseStyle->drawComplexControl(control, option, painter, widget);-
216}
never executed: end of block
0
217-
218/*! \reimp-
219 */-
220void QProxyStyle::drawItemText(QPainter *painter, const QRect &rect, int flags, const QPalette &pal, bool enabled,-
221 const QString &text, QPalette::ColorRole textRole) const-
222{-
223 Q_D (const QProxyStyle);-
224 d->ensureBaseStyle();-
225 d->baseStyle->drawItemText(painter, rect, flags, pal, enabled, text, textRole);-
226}
never executed: end of block
0
227-
228/*! \reimp-
229 */-
230void QProxyStyle::drawItemPixmap(QPainter *painter, const QRect &rect, int alignment, const QPixmap &pixmap) const-
231{-
232 Q_D (const QProxyStyle);-
233 d->ensureBaseStyle();-
234 d->baseStyle->drawItemPixmap(painter, rect, alignment, pixmap);-
235}
never executed: end of block
0
236-
237/*! \reimp-
238 */-
239QSize QProxyStyle::sizeFromContents(ContentsType type, const QStyleOption *option, const QSize &size, const QWidget *widget) const-
240{-
241 Q_D (const QProxyStyle);-
242 d->ensureBaseStyle();-
243 return d->baseStyle->sizeFromContents(type, option, size, widget);
never executed: return d->baseStyle->sizeFromContents(type, option, size, widget);
0
244}-
245-
246/*! \reimp-
247 */-
248QRect QProxyStyle::subElementRect(SubElement element, const QStyleOption *option, const QWidget *widget) const-
249{-
250 Q_D (const QProxyStyle);-
251 d->ensureBaseStyle();-
252 return d->baseStyle->subElementRect(element, option, widget);
never executed: return d->baseStyle->subElementRect(element, option, widget);
0
253}-
254-
255/*! \reimp-
256 */-
257QRect QProxyStyle::subControlRect(ComplexControl cc, const QStyleOptionComplex *option, SubControl sc, const QWidget *widget) const-
258{-
259 Q_D (const QProxyStyle);-
260 d->ensureBaseStyle();-
261 return d->baseStyle->subControlRect(cc, option, sc, widget);
never executed: return d->baseStyle->subControlRect(cc, option, sc, widget);
0
262}-
263-
264/*! \reimp-
265 */-
266QRect QProxyStyle::itemTextRect(const QFontMetrics &fm, const QRect &r, int flags, bool enabled, const QString &text) const-
267{-
268 Q_D (const QProxyStyle);-
269 d->ensureBaseStyle();-
270 return d->baseStyle->itemTextRect(fm, r, flags, enabled, text);
never executed: return d->baseStyle->itemTextRect(fm, r, flags, enabled, text);
0
271}-
272-
273/*! \reimp-
274 */-
275QRect QProxyStyle::itemPixmapRect(const QRect &r, int flags, const QPixmap &pixmap) const-
276{-
277 Q_D (const QProxyStyle);-
278 d->ensureBaseStyle();-
279 return d->baseStyle->itemPixmapRect(r, flags, pixmap);
never executed: return d->baseStyle->itemPixmapRect(r, flags, pixmap);
0
280}-
281-
282/*! \reimp-
283 */-
284QStyle::SubControl QProxyStyle::hitTestComplexControl(ComplexControl control, const QStyleOptionComplex *option, const QPoint &pos, const QWidget *widget) const-
285{-
286 Q_D (const QProxyStyle);-
287 d->ensureBaseStyle();-
288 return d->baseStyle->hitTestComplexControl(control, option, pos, widget);
never executed: return d->baseStyle->hitTestComplexControl(control, option, pos, widget);
0
289}-
290-
291/*! \reimp-
292 */-
293int QProxyStyle::styleHint(StyleHint hint, const QStyleOption *option, const QWidget *widget, QStyleHintReturn *returnData) const-
294{-
295 Q_D (const QProxyStyle);-
296 d->ensureBaseStyle();-
297 return d->baseStyle->styleHint(hint, option, widget, returnData);
never executed: return d->baseStyle->styleHint(hint, option, widget, returnData);
0
298}-
299-
300/*! \reimp-
301 */-
302int QProxyStyle::pixelMetric(PixelMetric metric, const QStyleOption *option, const QWidget *widget) const-
303{-
304 Q_D (const QProxyStyle);-
305 d->ensureBaseStyle();-
306 return d->baseStyle->pixelMetric(metric, option, widget);
never executed: return d->baseStyle->pixelMetric(metric, option, widget);
0
307}-
308-
309/*! \reimp-
310 */-
311QPixmap QProxyStyle::standardPixmap(StandardPixmap standardPixmap, const QStyleOption *opt, const QWidget *widget) const-
312{-
313 Q_D (const QProxyStyle);-
314 d->ensureBaseStyle();-
315 return d->baseStyle->standardPixmap(standardPixmap, opt, widget);
never executed: return d->baseStyle->standardPixmap(standardPixmap, opt, widget);
0
316}-
317-
318/*! \reimp-
319 */-
320QPixmap QProxyStyle::generatedIconPixmap(QIcon::Mode iconMode, const QPixmap &pixmap, const QStyleOption *opt) const-
321{-
322 Q_D (const QProxyStyle);-
323 d->ensureBaseStyle();-
324 return d->baseStyle->generatedIconPixmap(iconMode, pixmap, opt);
never executed: return d->baseStyle->generatedIconPixmap(iconMode, pixmap, opt);
0
325}-
326-
327/*! \reimp-
328 */-
329QPalette QProxyStyle::standardPalette() const-
330{-
331 Q_D (const QProxyStyle);-
332 d->ensureBaseStyle();-
333 return d->baseStyle->standardPalette();
never executed: return d->baseStyle->standardPalette();
0
334}-
335-
336/*! \reimp-
337 */-
338void QProxyStyle::polish(QWidget *widget)-
339{-
340 Q_D (QProxyStyle);-
341 d->ensureBaseStyle();-
342 d->baseStyle->polish(widget);-
343}
never executed: end of block
0
344-
345/*! \reimp-
346 */-
347void QProxyStyle::polish(QPalette &pal)-
348{-
349 Q_D (QProxyStyle);-
350 d->ensureBaseStyle();-
351 d->baseStyle->polish(pal);-
352}
never executed: end of block
0
353-
354/*! \reimp-
355 */-
356void QProxyStyle::polish(QApplication *app)-
357{-
358 Q_D (QProxyStyle);-
359 d->ensureBaseStyle();-
360 d->baseStyle->polish(app);-
361}
never executed: end of block
0
362-
363/*! \reimp-
364 */-
365void QProxyStyle::unpolish(QWidget *widget)-
366{-
367 Q_D (QProxyStyle);-
368 d->ensureBaseStyle();-
369 d->baseStyle->unpolish(widget);-
370}
never executed: end of block
0
371-
372/*! \reimp-
373 */-
374void QProxyStyle::unpolish(QApplication *app)-
375{-
376 Q_D (QProxyStyle);-
377 d->ensureBaseStyle();-
378 d->baseStyle->unpolish(app);-
379}
never executed: end of block
0
380-
381/*! \reimp-
382 */-
383bool QProxyStyle::event(QEvent *e)-
384{-
385 Q_D (QProxyStyle);-
386 d->ensureBaseStyle();-
387 return d->baseStyle->event(e);
never executed: return d->baseStyle->event(e);
0
388}-
389-
390/*!-
391 Returns an icon for the given \a standardIcon.-
392-
393 Reimplement this slot to provide your own icons in a QStyle-
394 subclass. The \a option argument can be used to pass extra-
395 information required to find the appropriate icon. The \a widget-
396 argument is optional and can also be used to help find the icon.-
397 */-
398QIcon QProxyStyle::standardIcon(StandardPixmap standardIcon,-
399 const QStyleOption *option,-
400 const QWidget *widget) const-
401{-
402 Q_D (const QProxyStyle);-
403 d->ensureBaseStyle();-
404 return d->baseStyle->standardIcon(standardIcon, option, widget);
never executed: return d->baseStyle->standardIcon(standardIcon, option, widget);
0
405}-
406-
407/*!-
408 This slot is called by layoutSpacing() to determine the spacing that-
409 should be used between \a control1 and \a control2 in a layout. \a-
410 orientation specifies whether the controls are laid out side by side-
411 or stacked vertically. The \a option parameter can be used to pass-
412 extra information about the parent widget. The \a widget parameter-
413 is optional and can also be used if \a option is 0.-
414-
415 The default implementation returns -1.-
416-
417 \sa combinedLayoutSpacing()-
418 */-
419int QProxyStyle::layoutSpacing(QSizePolicy::ControlType control1,-
420 QSizePolicy::ControlType control2,-
421 Qt::Orientation orientation,-
422 const QStyleOption *option,-
423 const QWidget *widget) const-
424{-
425 Q_D (const QProxyStyle);-
426 d->ensureBaseStyle();-
427 return d->baseStyle->layoutSpacing(control1, control2, orientation, option, widget);
never executed: return d->baseStyle->layoutSpacing(control1, control2, orientation, option, widget);
0
428}-
429-
430QT_END_NAMESPACE-
431-
432#include "moc_qproxystyle.cpp"-
433-
434#endif // QT_NO_STYLE_PROXY-
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