C++ QScrollArea::setVerticalScrollBar方法代码示例

void tst_QAbstractScrollArea::setScrollBars()
{
    QScrollArea scrollArea;
    scrollArea.resize(300, 300);
    scrollArea.show();

    QPointer<QScrollBar> vbar = scrollArea.verticalScrollBar();
    QPointer<QScrollBar> hbar = scrollArea.horizontalScrollBar();

    // Now set properties on the scroll bars
    scrollArea.verticalScrollBar()->setInvertedAppearance(true);
    scrollArea.verticalScrollBar()->setInvertedControls(true);
    scrollArea.verticalScrollBar()->setTracking(true);
    scrollArea.verticalScrollBar()->setRange(-100, 100);
    scrollArea.verticalScrollBar()->setPageStep(42);
    scrollArea.verticalScrollBar()->setSingleStep(3);
    scrollArea.verticalScrollBar()->setValue(43);
    scrollArea.horizontalScrollBar()->setInvertedAppearance(true);
    scrollArea.horizontalScrollBar()->setInvertedControls(true);
    scrollArea.horizontalScrollBar()->setTracking(true);
    scrollArea.horizontalScrollBar()->setRange(-100, 100);
    scrollArea.horizontalScrollBar()->setPageStep(42);
    scrollArea.horizontalScrollBar()->setSingleStep(3);
    scrollArea.horizontalScrollBar()->setValue(43);

    qApp->processEvents();

    // Then replace the scroll bars
    scrollArea.setVerticalScrollBar(new QScrollBar);
    scrollArea.setHorizontalScrollBar(new QScrollBar);

    // Check that the old ones were deleted
    QVERIFY(!vbar);
    QVERIFY(!hbar);

    qApp->processEvents();

    // Check that all properties have been populated
    QVERIFY(scrollArea.verticalScrollBar()->invertedAppearance());
    QVERIFY(scrollArea.verticalScrollBar()->invertedControls());
    QVERIFY(scrollArea.verticalScrollBar()->hasTracking());
    QVERIFY(scrollArea.verticalScrollBar()->isVisible());
    QCOMPARE(scrollArea.verticalScrollBar()->minimum(), -100);
    QCOMPARE(scrollArea.verticalScrollBar()->maximum(), 100);
    QCOMPARE(scrollArea.verticalScrollBar()->pageStep(), 42);
    QCOMPARE(scrollArea.verticalScrollBar()->singleStep(), 3);
    QCOMPARE(scrollArea.verticalScrollBar()->value(), 43);
    QVERIFY(scrollArea.horizontalScrollBar()->invertedAppearance());
    QVERIFY(scrollArea.horizontalScrollBar()->invertedControls());
    QVERIFY(scrollArea.horizontalScrollBar()->hasTracking());
    QVERIFY(scrollArea.horizontalScrollBar()->isVisible());
    QCOMPARE(scrollArea.horizontalScrollBar()->minimum(), -100);
    QCOMPARE(scrollArea.horizontalScrollBar()->maximum(), 100);
    QCOMPARE(scrollArea.horizontalScrollBar()->pageStep(), 42);
    QCOMPARE(scrollArea.horizontalScrollBar()->singleStep(), 3);
    QCOMPARE(scrollArea.horizontalScrollBar()->value(), 43);
}

// Setup widget
void MyWidget::setup(int layoutMargin, QString borderColor, QString backgroundColor) {

	// Some styling
	visibleArea = QSize(600,400);
	this->borderColor = borderColor;
	this->backgroundColor = (backgroundColor == "" ? "rgba(0,0,0,200)" : backgroundColor);
	borderLeftRight = -1;
	borderTopDown = -1;
	fullscreen = false;

	// The different QRects
	rectShown = QRect();
	rectHidden = QRect(0,-10,10,10);
	rectAni = QRect();

	// The current geometry and position
	isShown = false;
	this->setGeometry(rectHidden);

	// Fading
	backOpacityShow = 0.5;
	backOpacityCur = 0;
	centerOpacityCur = 0;
	fade = new QTimeLine;
	fadeIN = true;
	fadeEffectCenter = new QGraphicsOpacityEffect;
	connect(fade, SIGNAL(valueChanged(qreal)), this, SLOT(fadeStep()));
	connect(fade, SIGNAL(finished()), this, SLOT(aniFinished()));

	// The current widget look
	this->setStyleSheet(QString("background: rgba(0,0,0,%1);").arg(255*backOpacityShow));

	// the central widget containing all the information
	center = new QWidget(this);
	center->setGraphicsEffect(fadeEffectCenter);
	center->setObjectName("center");
	// For some reason, if the border is not defined right here at the beginning, it wont be visible...
	if(borderColor == "")
		center->setStyleSheet(QString("#center { background: %1; border-radius: 10px; font-size: 12pt; }").arg(this->backgroundColor));
	else
		center->setStyleSheet(QString("#center {background: %1; border-radius: 15px; font-size: 12pt; border: 2px solid %2; }").arg(this->backgroundColor).arg(borderColor));

	// Create and set the scrollarea with main layout
	QVBoxLayout *central = new QVBoxLayout;
	central->setMargin(layoutMargin);
	QScrollArea *scroll = new QScrollArea(this);
	scroll->setObjectName("scrollWidget");
	scroll->setStyleSheet("QWidget#scrollWidget { background: transparent; padding-bottom: 3px; border-radius: 0px; }");
	QWidget *scrollWidget = new QWidget(scroll->widget());
	scrollWidget->setStyleSheet("background: transparent;");
	scroll->setWidgetResizable(true);
	scroll->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
	scrollWidget->setLayout(central);
	scroll->setWidget(scrollWidget);
	mainlayout = new QVBoxLayout;
	if(layoutMargin == 0) mainlayout->setMargin(0);
	center->setLayout(mainlayout);
	mainlayout->addWidget(scroll);

	// This widget gets the main layout set to
	centralWidget = new QWidget;
	central->addWidget(centralWidget);

	// And set the custom scrollbar
	scrollbar = new CustomScrollbar;
	scroll->setVerticalScrollBar(scrollbar);

	// And in case the monitor resolution is so small, that the horizontal scrollbar is visible:
	CustomScrollbar *scrollbarHor = new CustomScrollbar;
	scroll->setHorizontalScrollBar(scrollbarHor);

}

SettingsTabOther::SettingsTabOther(QWidget *parent, QMap<QString, QVariant> set, bool v) : QWidget(parent) {

	// The global settings
	globSet = set;

	verbose = v;

	this->setObjectName("tabother");
	this->setStyleSheet("#tabother { background: transparent; color: white; }");

	tabs = new TabWidget;
	tabs->expand(false);
	tabs->setBorderTop("rgba(150,150,150,100)",2);
	tabs->setBorderBot("rgba(150,150,150,100)",2);

	QVBoxLayout *mainLay = new QVBoxLayout;
	mainLay->addWidget(tabs);
	this->setLayout(mainLay);

	// the main scroll widget for all LOOK content
	scrollbarOther = new CustomScrollbar;
	QScrollArea *scrollOther = new QScrollArea;
	QVBoxLayout *layOther = new QVBoxLayout(scrollOther);
	QWidget *scrollWidgOther = new QWidget(scrollOther);
	scrollWidgOther->setLayout(layOther);
	scrollOther->setWidget(scrollWidgOther);
	scrollOther->setWidgetResizable(true);
	scrollOther->setVerticalScrollBar(scrollbarOther);

	// the main scroll widget for all FEEL content
	scrollbarFile = new CustomScrollbar;
	QScrollArea *scrollFile = new QScrollArea;
	QVBoxLayout *layFile = new QVBoxLayout(scrollFile);
	QWidget *scrollWidgFile = new QWidget(scrollFile);
	scrollWidgFile->setLayout(layFile);
	scrollFile->setWidget(scrollWidgFile);
	scrollFile->setWidgetResizable(true);
	scrollFile->setVerticalScrollBar(scrollbarFile);

	tabOther = new QWidget;
	tabFile = new QWidget;

	QVBoxLayout *scrollLayOther = new QVBoxLayout;
	scrollLayOther->addWidget(scrollOther);
	tabOther->setLayout(scrollLayOther);

	QVBoxLayout *scrollLayFile = new QVBoxLayout;
	scrollLayFile->addWidget(scrollFile);
	tabFile->setLayout(scrollLayFile);

	tabs->addTab(tabOther,tr("Other"));
	tabs->addTab(tabFile,tr("File Types"));



	// The titles
	CustomLabel *titleOther = new CustomLabel("<center><h1>" + tr("Other Settings") + "</h1></center>");
	layOther->addWidget(titleOther);
	layOther->addSpacing(20);
	CustomLabel *titleFile = new CustomLabel("<center><h1>" + tr("Known File Types") + "</h1></center>");
	layFile->addWidget(titleFile);
	layFile->addSpacing(20);



	// CHOOSE A LANGUAGE
	CustomLabel *langLabel = new CustomLabel("<b><span style=\"font-size:12pt\">" + tr("Choose Language") + "</span></b><br><br>" + tr("There are a good few different languages available. Thanks to everybody who took the time to translate PhotoQt!"));
	langLabel->setWordWrap(true);
	layOther->addWidget(langLabel);
	layOther->addSpacing(15);


	// All the languages available. They are sorted according to their language code (except English)
	// A GOOD FEW OF THE TRANSLATIONS HAVEN'T BEEN UPDATED IN A LONG TIME AND ARE STANDING AT 0-5%
	// These translations are NOT included!

	langDesc << "English";
	langShort << "en";

	// Arabic
//	langDesc << QString::fromUtf8("العربية (Amar T.)");
//	langShort << "ar";

	// Czech
	langDesc << QString::fromUtf8("Čeština (Robin H. & Petr Š.)");
	langShort << "cs";

	// German
	langDesc << "Deutsch";
	langShort << "de";

	// Greek
	langDesc << QString::fromUtf8("Ελληνικά (Dimitrios G.)");
	langShort << "el";

	// Spanish
	langDesc << QString::fromUtf8("Español (Hector C. & Victoria P.)");
	langShort << "es_ES";

	// Finnish
//.........这里部分代码省略.........

SettingsTabThumbnail::SettingsTabThumbnail(QWidget *parent, QMap<QString, QVariant> set, bool v) : QWidget(parent) {

	// The global settings
	globSet = set;

	this->setObjectName("tabthumb");

	verbose = v;

	// Opening the thumbnail database
	db = QSqlDatabase::database("thumbDB");

	// Style the widget
	this->setStyleSheet("#tabthumb { background: transparent; color: white; }");


	tabs = new TabWidget;
	tabs->expand(false);
	tabs->setBorderTop("rgba(150,150,150,100)",2);
	tabs->setBorderBot("rgba(150,150,150,100)",2);

	QVBoxLayout *mainLay = new QVBoxLayout;
	mainLay->addWidget(tabs);
	this->setLayout(mainLay);

	// the main scroll widget for all LOOK content
	scrollbarLook = new CustomScrollbar;
	QScrollArea *scrollLook = new QScrollArea;
	QVBoxLayout *layLook = new QVBoxLayout(scrollLook);
	QWidget *scrollWidgLook = new QWidget(scrollLook);
	scrollWidgLook->setLayout(layLook);
	scrollLook->setWidget(scrollWidgLook);
	scrollLook->setWidgetResizable(true);
	scrollLook->setVerticalScrollBar(scrollbarLook);

	// the main scroll widget for all FEEL content
	scrollbarTune = new CustomScrollbar;
	QScrollArea *scrollTune = new QScrollArea;
	QVBoxLayout *layTune = new QVBoxLayout(scrollTune);
	QWidget *scrollWidgTune = new QWidget(scrollTune);
	scrollWidgTune->setLayout(layTune);
	scrollTune->setWidget(scrollWidgTune);
	scrollTune->setWidgetResizable(true);
	scrollTune->setVerticalScrollBar(scrollbarTune);

	tabLook = new QWidget;
	tabTune = new QWidget;

	QVBoxLayout *scrollLayLook = new QVBoxLayout;
	scrollLayLook->addWidget(scrollLook);
	tabLook->setLayout(scrollLayLook);

	QVBoxLayout *scrollLayTune = new QVBoxLayout;
	scrollLayTune->addWidget(scrollTune);
	tabTune->setLayout(scrollLayTune);

	tabs->addTab(tabLook,tr("Look"));
	tabs->addTab(tabTune,tr("Fine-Tuning"));



	// The titles
	CustomLabel *titleLook = new CustomLabel("<center><h1>" + tr("Thumbnail Look") + "</h1></center>");
	layLook->addWidget(titleLook);
	layLook->addSpacing(20);
	CustomLabel *titleTune = new CustomLabel("<center><h1>" + tr("Fine-Tuning of Thumbnails") + "</h1></center>");
	layTune->addWidget(titleTune);
	layTune->addSpacing(20);


	// OPTION TO CHANGE THUMBNAIL SIZE
	CustomLabel *thumbSizeLabel = new CustomLabel("<b><span style=\"font-size: 12pt\">" + tr("Thumbnail Size") + "</span></b><br><br>" + tr("Here you can adjust the thumbnail size. You can set it to any size between 20 and 256 pixel. Per default it is set to 80 pixel, but with different screen resolutions it might be nice to have them larger/smaller."));
	thumbSizeLabel->setWordWrap(true);
	QHBoxLayout *thumbSizeLay = new QHBoxLayout;
	thumbSizeSlider = new CustomSlider;
	thumbSizeSlider->setMinimum(20);
	thumbSizeSlider->setMaximum(256);
	thumbSizeSpin = new CustomSpinBox;
	thumbSizeSpin->setMinimum(20);
	thumbSizeSpin->setMaximum(256);
	thumbSizeLay->addStretch();
	thumbSizeLay->addWidget(thumbSizeSlider);
	thumbSizeLay->addWidget(thumbSizeSpin);
	thumbSizeLay->addStretch();
	layLook->addWidget(thumbSizeLabel);
	layLook->addSpacing(5);
	layLook->addLayout(thumbSizeLay);
	layLook->addSpacing(20);
	connect(thumbSizeSlider, SIGNAL(valueChanged(int)), thumbSizeSpin, SLOT(setValue(int)));
	connect(thumbSizeSpin, SIGNAL(valueChanged(int)), thumbSizeSlider, SLOT(setValue(int)));



	// OPTION TO SET SPACING BETWEEN THUMBNAILS
	borderAroundSlider = new CustomSlider;
	borderAroundSlider->setMinimum(0);
	borderAroundSlider->setMaximum(30);
	borderAroundSlider->setTickInterval(4);
	borderAroundSpin = new CustomSpinBox;
	borderAroundSpin->setMinimum(0);
//.........这里部分代码省略.........