qt-everywhere-src-5.15.1/qtquickcontrols/src/dialogs/qquickplatformcolordialog.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the Qt Quick Dialogs module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 3 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL3 included in the
 ** packaging of this file. Please review the following information to
 ** ensure the GNU Lesser General Public License version 3 requirements
 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 2.0 or (at your option) the GNU General
 ** Public license version 3 or any later version approved by the KDE Free
 ** Qt Foundation. The licenses are as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
 ** included in the packaging of this file. Please review the following
 ** information to ensure the GNU General Public License requirements will
 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
 ** https://www.gnu.org/licenses/gpl-3.0.html.
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "qquickplatformcolordialog_p.h"
 #include "qquickitem.h"

 #include <private/qguiapplication_p.h>
 #include <QWindow>
 #include <QQuickView>
 #include <QQuickWindow>

 QT_BEGIN_NAMESPACE

 /*!
     \qmltype ColorDialog
     \instantiates QQuickPlatformColorDialog1
     \inqmlmodule QtQuick.Dialogs
     \ingroup qtquickdialogs
     \brief Dialog component for choosing a color.
     \since 5.1

     ColorDialog allows the user to select a color. The dialog is initially
     invisible. You need to set the properties as desired first, then set
     \l visible to true or call \l open().

     Here is a minimal example to open a color dialog and exit after the user
     chooses a color:

     \qml
     import QtQuick 2.2
     import QtQuick.Dialogs 1.0

     ColorDialog {
         id: colorDialog
         title: "Please choose a color"
         onAccepted: {
             console.log("You chose: " + colorDialog.color)
             Qt.quit()
         }
         onRejected: {
             console.log("Canceled")
             Qt.quit()
         }
         Component.onCompleted: visible = true
     }
     \endqml

     A ColorDialog window is automatically transient for its parent window. So
     whether you declare the dialog inside an \l Item or inside a \l Window, the
     dialog will appear centered over the window containing the item, or over
     the Window that you declared.

     The implementation of ColorDialog will be a platform color dialog if
     possible. If that isn't possible, then it will try to instantiate a
     \l QColorDialog. If that also isn't possible, then it will fall back to a QML
     implementation, DefaultColorDialog.qml. In that case you can customize the
     appearance by editing this file. DefaultColorDialog.qml contains a Rectangle
     to hold the dialog's contents, because certain embedded systems do not
     support multiple top-level windows. When the dialog becomes visible, it
     will automatically be wrapped in a Window if possible, or simply reparented
     on top of the main window if there can only be one window.
 */

 /*!
     \qmlsignal QtQuick::Dialogs::ColorDialog::accepted

     This signal is emitted when the user has finished using the
     dialog. You can then inspect the \l color property to get the selection.

     Example:

     \qml
     ColorDialog {
         onAccepted: { console.log("Selected color: " + color) }
     }
     \endqml

     The corresponding handler is \c onAccepted.
 */

 /*!
     \qmlsignal QtQuick::Dialogs::ColorDialog::rejected

     This signal is emitted when the user has dismissed the dialog,
     either by closing the dialog window or by pressing the Cancel button.

     The corresponding handler is \c onRejected.
 */

 /*!
     \class QQuickPlatformColorDialog1
     \inmodule QtQuick.Dialogs
     \internal

     \brief The QQuickPlatformColorDialog1 class provides a color dialog

     The dialog is implemented via the QPlatformColorDialogHelper when possible;
     otherwise it falls back to a QColorDialog or a QML implementation.

     \since 5.1
 */

 /*!
     Constructs a color dialog with parent window \a parent.
 */
 QQuickPlatformColorDialog1::QQuickPlatformColorDialog1(QObject *parent) :
     QQuickAbstractColorDialog(parent)
 {
 }

 /*!
     Destroys the color dialog.
 */
 QQuickPlatformColorDialog1::~QQuickPlatformColorDialog1()
 {
     if (m_dlgHelper)
         m_dlgHelper->hide();
     delete m_dlgHelper;
 }

 QPlatformColorDialogHelper *QQuickPlatformColorDialog1::helper()
 {
     QQuickItem *parentItem = qobject_cast<QQuickItem *>(parent());
     if (parentItem)
         m_parentWindow = parentItem->window();

     if ( !m_dlgHelper && QGuiApplicationPrivate::platformTheme()->
             usePlatformNativeDialog(QPlatformTheme::ColorDialog) ) {
         m_dlgHelper = static_cast<QPlatformColorDialogHelper *>(QGuiApplicationPrivate::platformTheme()
            ->createPlatformDialogHelper(QPlatformTheme::ColorDialog));
         if (!m_dlgHelper)
             return m_dlgHelper;
         connect(m_dlgHelper, SIGNAL(accept()), this, SLOT(accept()));
         connect(m_dlgHelper, SIGNAL(reject()), this, SLOT(reject()));
         connect(m_dlgHelper, SIGNAL(currentColorChanged(QColor)), this, SLOT(setCurrentColor(QColor)));
         connect(m_dlgHelper, SIGNAL(colorSelected(QColor)), this, SLOT(setColor(QColor)));
     }

     return m_dlgHelper;
 }

 /*!
     \qmlproperty bool ColorDialog::visible

     This property holds whether the dialog is visible. By default this is
     false.

     \sa modality
 */

 /*!
     \qmlproperty Qt::WindowModality ColorDialog::modality

     Whether the dialog should be shown modal with respect to the window
     containing the dialog's parent Item, modal with respect to the whole
     application, or non-modal.

     By default it is \c Qt.NonModal.

     Modality does not mean that there are any blocking calls to wait for the
     dialog to be accepted or rejected; it's only that the user will be
     prevented from interacting with the parent window and/or the application
     windows at the same time.

     You probably need to write an onAccepted handler if you wish to change a
     color after the user has pressed the OK button, or an
     onCurrentColorChanged handler if you wish to react to every change the
     user makes while the dialog is open.

     On MacOS the color dialog is only allowed to be non-modal.
 */

 /*!
     \qmlmethod void ColorDialog::open()

     Shows the dialog to the user. It is equivalent to setting \l visible to
     true.
 */

 /*!
     \qmlmethod void ColorDialog::close()

     Closes the dialog.
 */

 /*!
     \qmlproperty string ColorDialog::title

     The title of the dialog window.
 */

 /*!
     \qmlproperty bool ColorDialog::showAlphaChannel

     Whether the dialog will provide a means of changing the opacity.

     By default, this property is true. This property must be set to the desired
     value before opening the dialog. Usually the alpha channel is represented
     by an additional slider control.
 */

 /*!
     \qmlproperty color ColorDialog::color

     The color which the user selected.

     \note This color is not always the same as the color held by the
     currentColor property since the user can choose different colors before
     finally selecting the one to use.

     \sa currentColor
 */

 /*!
     \qmlproperty color ColorDialog::currentColor

     The color which the user has currently selected.

     For the color that is set when the dialog is accepted, use the \l color
     property.

     \sa color
 */

 QT_END_NAMESPACE
	/****************************************************************************
	**
	** Copyright (C) 2016 The Qt Company Ltd.
	** Contact: https://www.qt.io/licensing/
	**
	** This file is part of the Qt Quick Dialogs module of the Qt Toolkit.
	**
	** $QT_BEGIN_LICENSE:LGPL$
	** Commercial License Usage
	** Licensees holding valid commercial Qt licenses may use this file in
	** accordance with the commercial license agreement provided with the
	** Software or, alternatively, in accordance with the terms contained in
	** a written agreement between you and The Qt Company. For licensing terms
	** and conditions see https://www.qt.io/terms-conditions. For further
	** information use the contact form at https://www.qt.io/contact-us.
	**
	** GNU Lesser General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU Lesser
	** General Public License version 3 as published by the Free Software
	** Foundation and appearing in the file LICENSE.LGPL3 included in the
	** packaging of this file. Please review the following information to
	** ensure the GNU Lesser General Public License version 3 requirements
	** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
	**
	** GNU General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU
	** General Public License version 2.0 or (at your option) the GNU General
	** Public license version 3 or any later version approved by the KDE Free
	** Qt Foundation. The licenses are as published by the Free Software
	** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
	** included in the packaging of this file. Please review the following
	** information to ensure the GNU General Public License requirements will
	** be met: https://www.gnu.org/licenses/gpl-2.0.html and
	** https://www.gnu.org/licenses/gpl-3.0.html.
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#include "qquickplatformcolordialog_p.h"
	#include "qquickitem.h"

	#include <private/qguiapplication_p.h>
	#include <QWindow>
	#include <QQuickView>
	#include <QQuickWindow>

	QT_BEGIN_NAMESPACE

	/*!
	\qmltype ColorDialog
	\instantiates QQuickPlatformColorDialog1
	\inqmlmodule QtQuick.Dialogs
	\ingroup qtquickdialogs
	\brief Dialog component for choosing a color.
	\since 5.1

	ColorDialog allows the user to select a color. The dialog is initially
	invisible. You need to set the properties as desired first, then set
	\l visible to true or call \l open().

	Here is a minimal example to open a color dialog and exit after the user
	chooses a color:

	\qml
	import QtQuick 2.2
	import QtQuick.Dialogs 1.0

	ColorDialog {
	id: colorDialog
	title: "Please choose a color"
	onAccepted: {
	console.log("You chose: " + colorDialog.color)
	Qt.quit()
	}
	onRejected: {
	console.log("Canceled")
	Qt.quit()
	}
	Component.onCompleted: visible = true
	}
	\endqml

	A ColorDialog window is automatically transient for its parent window. So
	whether you declare the dialog inside an \l Item or inside a \l Window, the
	dialog will appear centered over the window containing the item, or over
	the Window that you declared.

	The implementation of ColorDialog will be a platform color dialog if
	possible. If that isn't possible, then it will try to instantiate a
	\l QColorDialog. If that also isn't possible, then it will fall back to a QML
	implementation, DefaultColorDialog.qml. In that case you can customize the
	appearance by editing this file. DefaultColorDialog.qml contains a Rectangle
	to hold the dialog's contents, because certain embedded systems do not
	support multiple top-level windows. When the dialog becomes visible, it
	will automatically be wrapped in a Window if possible, or simply reparented
	on top of the main window if there can only be one window.
	*/

	/*!
	\qmlsignal QtQuick::Dialogs::ColorDialog::accepted

	This signal is emitted when the user has finished using the
	dialog. You can then inspect the \l color property to get the selection.

	Example:

	\qml
	ColorDialog {
	onAccepted: { console.log("Selected color: " + color) }
	}
	\endqml

	The corresponding handler is \c onAccepted.
	*/

	/*!
	\qmlsignal QtQuick::Dialogs::ColorDialog::rejected

	This signal is emitted when the user has dismissed the dialog,
	either by closing the dialog window or by pressing the Cancel button.

	The corresponding handler is \c onRejected.
	*/

	/*!
	\class QQuickPlatformColorDialog1
	\inmodule QtQuick.Dialogs
	\internal

	\brief The QQuickPlatformColorDialog1 class provides a color dialog

	The dialog is implemented via the QPlatformColorDialogHelper when possible;
	otherwise it falls back to a QColorDialog or a QML implementation.

	\since 5.1
	*/

	/*!
	Constructs a color dialog with parent window \a parent.
	*/
	QQuickPlatformColorDialog1::QQuickPlatformColorDialog1(QObject *parent) :
	QQuickAbstractColorDialog(parent)
	{
	}

	/*!
	Destroys the color dialog.
	*/
	QQuickPlatformColorDialog1::~QQuickPlatformColorDialog1()
	{
	if (m_dlgHelper)
	m_dlgHelper->hide();
	delete m_dlgHelper;
	}

	QPlatformColorDialogHelper *QQuickPlatformColorDialog1::helper()
	{
	QQuickItem parentItem = qobject_cast<QQuickItem >(parent());
	if (parentItem)
	m_parentWindow = parentItem->window();

	if ( !m_dlgHelper && QGuiApplicationPrivate::platformTheme()->
	usePlatformNativeDialog(QPlatformTheme::ColorDialog) ) {
	m_dlgHelper = static_cast<QPlatformColorDialogHelper *>(QGuiApplicationPrivate::platformTheme()
	->createPlatformDialogHelper(QPlatformTheme::ColorDialog));
	if (!m_dlgHelper)
	return m_dlgHelper;
	connect(m_dlgHelper, SIGNAL(accept()), this, SLOT(accept()));
	connect(m_dlgHelper, SIGNAL(reject()), this, SLOT(reject()));
	connect(m_dlgHelper, SIGNAL(currentColorChanged(QColor)), this, SLOT(setCurrentColor(QColor)));
	connect(m_dlgHelper, SIGNAL(colorSelected(QColor)), this, SLOT(setColor(QColor)));
	}

	return m_dlgHelper;
	}

	/*!
	\qmlproperty bool ColorDialog::visible

	This property holds whether the dialog is visible. By default this is
	false.

	\sa modality
	*/

	/*!
	\qmlproperty Qt::WindowModality ColorDialog::modality

	Whether the dialog should be shown modal with respect to the window
	containing the dialog's parent Item, modal with respect to the whole
	application, or non-modal.

	By default it is \c Qt.NonModal.

	Modality does not mean that there are any blocking calls to wait for the
	dialog to be accepted or rejected; it's only that the user will be
	prevented from interacting with the parent window and/or the application
	windows at the same time.

	You probably need to write an onAccepted handler if you wish to change a
	color after the user has pressed the OK button, or an
	onCurrentColorChanged handler if you wish to react to every change the
	user makes while the dialog is open.

	On MacOS the color dialog is only allowed to be non-modal.
	*/

	/*!
	\qmlmethod void ColorDialog::open()

	Shows the dialog to the user. It is equivalent to setting \l visible to
	true.
	*/

	/*!
	\qmlmethod void ColorDialog::close()

	Closes the dialog.
	*/

	/*!
	\qmlproperty string ColorDialog::title

	The title of the dialog window.
	*/

	/*!
	\qmlproperty bool ColorDialog::showAlphaChannel

	Whether the dialog will provide a means of changing the opacity.

	By default, this property is true. This property must be set to the desired
	value before opening the dialog. Usually the alpha channel is represented
	by an additional slider control.
	*/

	/*!
	\qmlproperty color ColorDialog::color

	The color which the user selected.

	\note This color is not always the same as the color held by the
	currentColor property since the user can choose different colors before
	finally selecting the one to use.

	\sa currentColor
	*/

	/*!
	\qmlproperty color ColorDialog::currentColor

	The color which the user has currently selected.

	For the color that is set when the dialog is accepted, use the \l color
	property.

	\sa color
	*/

	QT_END_NAMESPACE