Added an experimental VideoSlideshow screensaver plus fixes

1 files changed, 140 insertions, 0 deletions

diff --git a/src-qt5/core/lumina-desktop-unified/src-screensaver/animations/ImageSlideshow.h b/src-qt5/core/lumina-desktop-unified/src-screensaver/animations/ImageSlideshow.h
new file mode 100644
index 00000000..4abc3ae7
--- /dev/null
+++ b/src-qt5/core/lumina-desktop-unified/src-screensaver/animations/ImageSlideshow.h
@@ -0,0 +1,140 @@
+//===========================================
+//  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