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https://github.com/parchlinux/calamares.git
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736f99768a
When WITH_QML is off (by explicit choice) - don't build the QmlViewStep - don't build the QML slideshow
148 lines
4.1 KiB
C++
148 lines
4.1 KiB
C++
/* === This file is part of Calamares - <https://github.com/calamares> ===
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*
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* Copyright 2014, Aurélien Gâteau <agateau@kde.org>
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* Copyright 2014-2015, Teo Mrnjavac <teo@kde.org>
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* Copyright 2018, Adriaan de Groot <groot@kde.org>
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*
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* Calamares is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Calamares is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Calamares. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBCALAMARESUI_SLIDESHOW_H
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#define LIBCALAMARESUI_SLIDESHOW_H
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#include "CalamaresConfig.h"
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#include <QMutex>
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#include <QStringList>
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#include <QWidget>
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class QLabel;
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class QTimer;
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#ifdef WITH_QML
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class QQmlComponent;
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class QQuickItem;
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class QQuickWidget;
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#endif
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namespace Calamares
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{
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/** @brief API for Slideshow objects
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*
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* A Slideshow (subclass) object is created by the ExecutionViewStep
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* and needs to manage its own configuration (e.g. from Branding).
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* The slideshow is started and stopped when it becomes visible
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* and when installation is over, by calling changeSlideShowState()
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* as appropriate.
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*/
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class Slideshow : public QObject
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{
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Q_OBJECT
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public:
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/// @brief State-change of the slideshow, for changeSlideShowState()
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enum Action
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{
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Start,
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Stop
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};
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Slideshow( QWidget* parent = nullptr )
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: QObject( parent )
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{
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}
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virtual ~Slideshow();
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/// @brief Is the slideshow being shown **right now**?
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bool isActive() const { return m_state == Start; }
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/** @brief The actual widget to show the user.
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*
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* Depending on the style of slideshow, this might be a QQuickWidget,
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* or a QLabel, or something else entirely.
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*/
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virtual QWidget* widget() = 0;
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/** @brief Tells the slideshow we activated or left the show.
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*
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* If @p state is @c Slideshow::Start, calls suitable activation procedures.
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* If @p state is @c Slideshow::Stop, calls deactivation procedures.
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*/
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virtual void changeSlideShowState( Action a ) = 0;
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protected:
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QMutex m_mutex;
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Action m_state = Stop;
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};
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#ifdef WITH_QML
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/** @brief Slideshow using a QML file
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*
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* This is the "classic" slideshow in Calamares, which runs some QML
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* while the installation is in progress. It is configured through
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* Branding settings *slideshow* and *slideshowAPI*, showing the QML
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* file from *slideshow*. The API version influences when and how the
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* QML is loaded; version 1 does so only when the slideshow is activated,
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* while version 2 does so asynchronously.
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*/
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class SlideshowQML : public Slideshow
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{
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Q_OBJECT
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public:
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SlideshowQML( QWidget* parent );
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virtual ~SlideshowQML() override;
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QWidget* widget() override;
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void changeSlideShowState( Action a ) override;
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public slots:
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void loadQmlV2Complete();
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void loadQmlV2(); ///< Loads the slideshow QML (from branding) for API version 2
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private:
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QQuickWidget* m_qmlShow;
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QQmlComponent* m_qmlComponent;
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QQuickItem* m_qmlObject; ///< The actual show
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};
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#endif
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/** @brief Slideshow using images
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*
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* This is an "oldschool" slideshow, but new in Calamares, which
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* displays static image files one-by-one. It is for systems that
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* do not use QML at all. It is configured through the Branding
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* setting *slideshow*. When using this widget, the setting must
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* be a list of filenames; the API is set to -1.
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*/
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class SlideshowPictures : public Slideshow
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{
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Q_OBJECT
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public:
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SlideshowPictures( QWidget* parent );
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virtual ~SlideshowPictures() override;
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QWidget* widget() override;
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virtual void changeSlideShowState( Action a ) override;
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public slots:
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void next();
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private:
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QLabel* m_label;
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QTimer* m_timer;
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int m_imageIndex;
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QStringList m_images;
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};
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} // namespace Calamares
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#endif
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