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//===========================================
// Lumina-DE source code
// Copyright (c) 2015, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
#ifndef _LUMINA_DESKTOP_SCREEN_SAVER_IMAGESLIDESHOW_ANIMATION_H
#define _LUMINA_DESKTOP_SCREEN_SAVER_IMAGESLIDESHOW_ANIMATION_H
#include "global-includes.h"
#include "BaseAnimGroup.h"
class ImageSlideshow: public QParallelAnimationGroup{
Q_OBJECT
private:
QLabel *image;
QPropertyAnimation *bounce, *fading;
QPixmap pixmap;
QStringList imageFiles;
QString imagePath;
QSize screenSize;
bool animate;
private:
void setupAnimation() {
//Choose between starting from top or bottom at random
if(qrand() % 2) {
bounce->setKeyValueAt(0, QPoint(0,screenSize.height()-image->height()));
bounce->setKeyValueAt(0.25, QPoint((screenSize.width()-image->width())/2,0));
bounce->setKeyValueAt(0.5, QPoint(screenSize.width()-image->width(),screenSize.height()-image->height()));
bounce->setKeyValueAt(0.75, QPoint((screenSize.width()-image->width())/2,0));
bounce->setKeyValueAt(1, QPoint(0,screenSize.height()-image->height()));
}else{
bounce->setKeyValueAt(0, QPoint(0,0));
bounce->setKeyValueAt(0.25, QPoint((screenSize.width()-image->width())/2,screenSize.height()-image->height()));
bounce->setKeyValueAt(0.5, QPoint(screenSize.width()-image->width(),0));
bounce->setKeyValueAt(0.75, QPoint((screenSize.width()-image->width())/2,screenSize.height()-image->height()));
bounce->setKeyValueAt(1, QPoint(0,0));
}
}
void chooseImage() {
QString randomFile = imagePath+imageFiles[qrand() % imageFiles.size()];
//Choose a new file if the chosen one is not an image
while(QImageReader::imageFormat(randomFile).isEmpty())
randomFile = imagePath+imageFiles[qrand() % imageFiles.size()];
pixmap.load(imagePath+imageFiles[qrand() % imageFiles.size()]);
//If the image is larger than the screen, then shrink the image down to 3/4 it's size (so there's still some bounce)
//Scale the pixmap to keep the aspect ratio instead of resizing the label itself
if(pixmap.width() > screenSize.width() or pixmap.height() > screenSize.height())
pixmap = pixmap.scaled(screenSize*(3.0/4.0), Qt::KeepAspectRatio);
//Set pixmap to the image label
image->setPixmap(pixmap);
image->resize(pixmap.size());
}
private slots:
void LoopChanged(){
//Load a new random image. Resize the label based on the image's size
chooseImage();
setupAnimation();
}
void stopped(){ qDebug() << "Image Stopped"; image->hide();}
public:
ImageSlideshow(QWidget *parent, QString path, bool animate) : QParallelAnimationGroup(parent){
imagePath = path;
image = new QLabel(parent);
screenSize = parent->size();
this->animate = animate;
//Generate the list of files in the directory
imageFiles = QDir(imagePath).entryList(QDir::Files);
if(imageFiles.empty())
qDebug() << "Current image file path has no files.";
//Change some default settings for the image. If scaledContents is false, the image will be cut off if resized
image->setScaledContents(true);
image->setAlignment(Qt::AlignHCenter);
//Load a random initial image
chooseImage();
//Create the animation that moves the image across the screen
bounce = new QPropertyAnimation(image, "pos", parent);
//Add the animation that fades the image in and out
QGraphicsOpacityEffect *eff = new QGraphicsOpacityEffect(parent);
image->setGraphicsEffect(eff);
fading = new QPropertyAnimation(eff,"opacity");
fading->setKeyValueAt(0, 0);
fading->setKeyValueAt(0.20, 1);
fading->setKeyValueAt(0.80, 1);
fading->setKeyValueAt(1, 0);
this->addAnimation(fading);
setupAnimation();
image->show();
//Only add the animation if set in the configuration file
if(animate)
this->addAnimation(bounce);
else
//If no animation, center the image in the middle of the screen
image->move(QPoint((parent->width()-image->width())/2,(parent->height()-image->height())/2));
//Loop through 30 times for a total for 4 minutes
this->setLoopCount(30);
bounce->setDuration(8000);
fading->setDuration(8000);
connect(this, SIGNAL(currentLoopChanged(int)), this, SLOT(LoopChanged()) );
connect(this, SIGNAL(finished()), this, SLOT(stopped()) );
}
~ImageSlideshow(){}
};
class ImageAnimation: public BaseAnimGroup{
Q_OBJECT
public:
ImageAnimation(QWidget *parent, QSettings *set) : BaseAnimGroup(parent, set){}
~ImageAnimation(){
this->stop();
}
void LoadAnimations(){
canvas->setStyleSheet("background: black;");
//Load the path of the images from the configuration file (default /usr/local/backgrounds/)
QString imagePath = settings->value("imageSlideshow/path","/usr/local/backgrounds/").toString();
//Load whether to animate the image (default true)
bool animate = settings->value("imageSlideshow/animate", true).toBool();
ImageSlideshow *tmp = new ImageSlideshow(canvas, imagePath, animate);
this->addAnimation(tmp);
}
};
#endif
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