Screenshot Class Reference

#include <screenshot.h>

Inheritance diagram for Screenshot:

[legend]Collaboration diagram for Screenshot:

[legend]List of all members.

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Detailed Description

Definition at line 39 of file screenshot.h.

Public Member Functions
	Screenshot ()
Protected Member Functions
void	resizeEvent (QResizeEvent *event)
Private Slots
void	newScreenshot ()
void	saveScreenshot ()
void	shootScreen ()
void	updateCheckBox ()
Private Member Functions
void	createOptionsGroupBox ()
void	createButtonsLayout ()
QPushButton *	createButton (const QString &text, QWidget *receiver, const char *member)
void	updateScreenshotLabel ()
Private Attributes
QPixmap	originalPixmap
QLabel *	screenshotLabel
QGroupBox *	optionsGroupBox
QSpinBox *	delaySpinBox
QLabel *	delaySpinBoxLabel
QCheckBox *	hideThisWindowCheckBox
QPushButton *	newScreenshotButton
QPushButton *	saveScreenshotButton
QPushButton *	quitScreenshotButton
QVBoxLayout *	mainLayout
QGridLayout *	optionsGroupBoxLayout
QHBoxLayout *	buttonsLayout

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Constructor & Destructor Documentation

Screenshot::Screenshot

(

)

Definition at line 28 of file screenshot.cpp.

References QBoxLayout::addLayout(), QBoxLayout::addWidget(), Qt::AlignCenter, buttonsLayout, createButtonsLayout(), createOptionsGroupBox(), delaySpinBox, QSizePolicy::Expanding, mainLayout, optionsGroupBox, QWidget::resize(), screenshotLabel, QLabel::setAlignment(), QWidget::setLayout(), QWidget::setMinimumSize(), QWidget::setSizePolicy(), QSpinBox::setValue(), QWidget::setWindowTitle(), and shootScreen().

{
    screenshotLabel = new QLabel;
    screenshotLabel->setSizePolicy(QSizePolicy::Expanding,
                                   QSizePolicy::Expanding);
    screenshotLabel->setAlignment(Qt::AlignCenter);
    screenshotLabel->setMinimumSize(240, 160);

    createOptionsGroupBox();
    createButtonsLayout();

    mainLayout = new QVBoxLayout;
    mainLayout->addWidget(screenshotLabel);
    mainLayout->addWidget(optionsGroupBox);
    mainLayout->addLayout(buttonsLayout);
    setLayout(mainLayout);

    shootScreen();
    delaySpinBox->setValue(5);

    setWindowTitle(tr("Screenshot"));
    resize(300, 200);
}

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Member Function Documentation

void Screenshot::resizeEvent

(

QResizeEvent *

event

)

[protected, virtual]

This event handler can be reimplemented in a subclass to receive widget resize events which are passed in the event parameter. When resizeEvent() is called, the widget already has its new geometry. The old size is accessible through QResizeEvent::oldSize().

The widget will be erased and receive a paint event immediately after processing the resize event. No drawing need be (or should be) done inside this handler.

See also:

moveEvent(), event(), resize(), QResizeEvent, paintEvent(), {Scribble Example}

Reimplemented from QWidget.

Definition at line 52 of file screenshot.cpp.

References Qt::KeepAspectRatio, originalPixmap, QLabel::pixmap(), QSize::scale(), screenshotLabel, QWidget::size(), QPixmap::size(), and updateScreenshotLabel().

{
    QSize scaledSize = originalPixmap.size();
    scaledSize.scale(screenshotLabel->size(), Qt::KeepAspectRatio);
    if (!screenshotLabel->pixmap()
            || scaledSize != screenshotLabel->pixmap()->size())
        updateScreenshotLabel();
}

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void Screenshot::newScreenshot

(

)

[private, slot]

Definition at line 61 of file screenshot.cpp.

References delaySpinBox, QWidget::hide(), hideThisWindowCheckBox, QAbstractButton::isChecked(), newScreenshotButton, QWidget::setDisabled(), shootScreen(), QTimer::singleShot(), SLOT, and QSpinBox::value().

Referenced by createButtonsLayout().

{
    if (hideThisWindowCheckBox->isChecked())
        hide();
    newScreenshotButton->setDisabled(true);

    QTimer::singleShot(delaySpinBox->value() * 1000, this, SLOT(shootScreen()));
}

void Screenshot::saveScreenshot

(

)

[private, slot]

Definition at line 70 of file screenshot.cpp.

References QDir::currentPath(), QFileDialog::getSaveFileName(), QString::isEmpty(), originalPixmap, and QPixmap::save().

Referenced by createButtonsLayout().

{
    QString format = "png";
    QString initialPath = QDir::currentPath() + tr("/untitled.") + format;

    QString fileName = QFileDialog::getSaveFileName(this, tr("Save As"),
                               initialPath,
                               tr("%1 Files (*.%2);;All Files (*)")
                               .arg(format.toUpper())
                               .arg(format));
    if (!fileName.isEmpty())
        originalPixmap.save(fileName, format.toAscii());
}

void Screenshot::shootScreen

(

)

[private, slot]

Definition at line 84 of file screenshot.cpp.

References delaySpinBox, QApplication::desktop(), QPixmap::grabWindow(), hideThisWindowCheckBox, QAbstractButton::isChecked(), newScreenshotButton, originalPixmap, qApp, QWidget::setDisabled(), QWidget::show(), updateScreenshotLabel(), QSpinBox::value(), and QWidget::winId().

Referenced by newScreenshot(), and Screenshot().

{
    if (delaySpinBox->value() != 0)
        qApp->beep();
    originalPixmap = QPixmap::grabWindow(QApplication::desktop()->winId());
    updateScreenshotLabel();

    newScreenshotButton->setDisabled(false);
    if (hideThisWindowCheckBox->isChecked())
        show();
}

void Screenshot::updateCheckBox

(

)

[private, slot]

Definition at line 96 of file screenshot.cpp.

References delaySpinBox, hideThisWindowCheckBox, QWidget::setDisabled(), and QSpinBox::value().

Referenced by createOptionsGroupBox().

{
    if (delaySpinBox->value() == 0)
        hideThisWindowCheckBox->setDisabled(true);
    else
        hideThisWindowCheckBox->setDisabled(false);
}

void Screenshot::createOptionsGroupBox

(

)

[private]

Definition at line 104 of file screenshot.cpp.

References QGridLayout::addWidget(), QObject::connect(), delaySpinBox, delaySpinBoxLabel, hideThisWindowCheckBox, optionsGroupBox, optionsGroupBoxLayout, QWidget::setLayout(), QSpinBox::setMaximum(), QSpinBox::setSuffix(), SIGNAL, SLOT, and updateCheckBox().

Referenced by Screenshot().

{
    optionsGroupBox = new QGroupBox(tr("Options"));

    delaySpinBox = new QSpinBox;
    delaySpinBox->setSuffix(tr(" s"));
    delaySpinBox->setMaximum(60);
    connect(delaySpinBox, SIGNAL(valueChanged(int)), this, SLOT(updateCheckBox()));

    delaySpinBoxLabel = new QLabel(tr("Screenshot Delay:"));

    hideThisWindowCheckBox = new QCheckBox(tr("Hide This Window"));

    optionsGroupBoxLayout = new QGridLayout;
    optionsGroupBoxLayout->addWidget(delaySpinBoxLabel, 0, 0);
    optionsGroupBoxLayout->addWidget(delaySpinBox, 0, 1);
    optionsGroupBoxLayout->addWidget(hideThisWindowCheckBox, 1, 0, 1, 2);
    optionsGroupBox->setLayout(optionsGroupBoxLayout);
}

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void Screenshot::createButtonsLayout

(

)

[private]

Definition at line 124 of file screenshot.cpp.

References QBoxLayout::addStretch(), QBoxLayout::addWidget(), buttonsLayout, QWidget::close(), createButton(), newScreenshot(), newScreenshotButton, quitScreenshotButton, saveScreenshot(), saveScreenshotButton, and SLOT.

Referenced by Screenshot().

{
    newScreenshotButton = createButton(tr("New Screenshot"),
                                       this, SLOT(newScreenshot()));

    saveScreenshotButton = createButton(tr("Save Screenshot"),
                                        this, SLOT(saveScreenshot()));

    quitScreenshotButton = createButton(tr("Quit"), this, SLOT(close()));

    buttonsLayout = new QHBoxLayout;
    buttonsLayout->addStretch();
    buttonsLayout->addWidget(newScreenshotButton);
    buttonsLayout->addWidget(saveScreenshotButton);
    buttonsLayout->addWidget(quitScreenshotButton);
}

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QPushButton * Screenshot::createButton	(	const QString &	text,
		QWidget *	receiver,
		const char *	member
	)			[private]

Definition at line 141 of file screenshot.cpp.

References QObject::connect(), and SIGNAL.

Referenced by createButtonsLayout().

{
    QPushButton *button = new QPushButton(text);
    button->connect(button, SIGNAL(clicked()), receiver, member);
    return button;
}

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void Screenshot::updateScreenshotLabel

(

)

[private]

Definition at line 149 of file screenshot.cpp.

References Qt::KeepAspectRatio, originalPixmap, QPixmap::scaled(), screenshotLabel, QLabel::setPixmap(), QWidget::size(), and Qt::SmoothTransformation.

Referenced by resizeEvent(), and shootScreen().

{
    screenshotLabel->setPixmap(originalPixmap.scaled(screenshotLabel->size(),
                                                     Qt::KeepAspectRatio,
                                                     Qt::SmoothTransformation));
}

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Member Data Documentation

QPixmap Screenshot::originalPixmap [private]

Definition at line 62 of file screenshot.h.

Referenced by resizeEvent(), saveScreenshot(), shootScreen(), and updateScreenshotLabel().

QLabel* Screenshot::screenshotLabel [private]

Definition at line 64 of file screenshot.h.

Referenced by resizeEvent(), Screenshot(), and updateScreenshotLabel().

QGroupBox* Screenshot::optionsGroupBox [private]

Definition at line 65 of file screenshot.h.

Referenced by createOptionsGroupBox(), and Screenshot().

QSpinBox* Screenshot::delaySpinBox [private]

Definition at line 66 of file screenshot.h.

Referenced by createOptionsGroupBox(), newScreenshot(), Screenshot(), shootScreen(), and updateCheckBox().

QLabel* Screenshot::delaySpinBoxLabel [private]

Definition at line 67 of file screenshot.h.

Referenced by createOptionsGroupBox().

QCheckBox* Screenshot::hideThisWindowCheckBox [private]

Definition at line 68 of file screenshot.h.

Referenced by createOptionsGroupBox(), newScreenshot(), shootScreen(), and updateCheckBox().

QPushButton* Screenshot::newScreenshotButton [private]

Definition at line 69 of file screenshot.h.

Referenced by createButtonsLayout(), newScreenshot(), and shootScreen().

QPushButton* Screenshot::saveScreenshotButton [private]

Definition at line 70 of file screenshot.h.

Referenced by createButtonsLayout().

QPushButton* Screenshot::quitScreenshotButton [private]

Definition at line 71 of file screenshot.h.

Referenced by createButtonsLayout().

QVBoxLayout* Screenshot::mainLayout [private]

Definition at line 73 of file screenshot.h.

Referenced by Screenshot().

QGridLayout* Screenshot::optionsGroupBoxLayout [private]

Definition at line 74 of file screenshot.h.

Referenced by createOptionsGroupBox().

QHBoxLayout* Screenshot::buttonsLayout [private]

Definition at line 75 of file screenshot.h.

Referenced by createButtonsLayout(), and Screenshot().

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The documentation for this class was generated from the following files:

• examples/desktop/screenshot/screenshot.h
• examples/desktop/screenshot/screenshot.cpp

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