1 files changed, 169 insertions, 0 deletions
diff --git a/src-qt5/desktop-utils/lumina-fm-dev/widgets/SlideshowWidget.cpp b/src-qt5/desktop-utils/lumina-fm-dev/widgets/SlideshowWidget.cpp
new file mode 100644
index 00000000..a9028d2b
--- /dev/null
+++ b/src-qt5/desktop-utils/lumina-fm-dev/widgets/SlideshowWidget.cpp
@@ -0,0 +1,169 @@
+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2015, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#include "SlideshowWidget.h"
+#include "ui_SlideshowWidget.h"
+
+#include <QImageWriter>
+#include <QMessageBox>
+
+SlideshowWidget::SlideshowWidget(QWidget *parent) : QWidget(parent), ui(new Ui::SlideshowWidget){
+  ui->setupUi(this); //load the designer file
+  zoom = 1;
+  UpdateIcons();
+  UpdateText();	
+}
+
+SlideshowWidget::~SlideshowWidget(){
+	
+}
+
+// ================
+//    PUBLIC SLOTS
+// ================
+void SlideshowWidget::ClearImages(){
+  ui->combo_image_name->clear();	
+}
+
+void SlideshowWidget::LoadImages(QList<LFileInfo> list){
+  int cmax = ui->combo_image_name->count(); //current number of items
+  for(int i=0; i<list.length(); i++){
+    if(list[i].isImage()){ ui->combo_image_name->addItem(list[i].fileName(), list[i].absoluteFilePath() ); }
+  }
+  //Now automatically show the first item from the batch of new ones
+  if(cmax < ui->combo_image_name->count()){ ui->combo_image_name->setCurrentIndex(cmax); }
+}
+
+void SlideshowWidget::refresh(){
+  UpdateImage();
+}
+
+//Theme change functions
+void SlideshowWidget::UpdateIcons(){
+  ui->tool_image_goBegin->setIcon( LXDG::findIcon("go-first-view","") );
+  ui->tool_image_goEnd->setIcon( LXDG::findIcon("go-last-view","") );
+  ui->tool_image_goPrev->setIcon( LXDG::findIcon("go-previous-view","") );
+  ui->tool_image_goNext->setIcon( LXDG::findIcon("go-next-view","") );
+  ui->tool_image_remove->setIcon( LXDG::findIcon("edit-delete","") );
+  ui->tool_image_rotateleft->setIcon( LXDG::findIcon("object-rotate-left","") );
+  ui->tool_image_rotateright->setIcon( LXDG::findIcon("object-rotate-right","") );
+  ui->tool_image_zoomin->setIcon( LXDG::findIcon("zoom-in","") );
+  ui->tool_image_zoomout->setIcon( LXDG::findIcon("zoom-out","") );
+}
+
+void SlideshowWidget::UpdateText(){
+  ui->retranslateUi(this);
+}
+
+
+// =================
+//       PRIVATE
+// =================
+void SlideshowWidget::UpdateImage(){
+  QString file = ui->combo_image_name->currentData().toString();
+  qDebug() << "Show Image:" << file << "Zoom:" << zoom;
+  QPixmap pix(file);
+    QSize sz = ui->scrollArea->contentsRect().size();
+    if( sz.width()>pix.size().width() || sz.height()>pix.size().height()){ sz = pix.size(); } //100% size already - apply zoom after this
+    pix = pix.scaled(sz*zoom, Qt::KeepAspectRatio, Qt::SmoothTransformation); 
+  ui->label_image->setPixmap(pix);
+  //Now set/load the buttons
+  ui->tool_image_goBegin->setEnabled(ui->combo_image_name->currentIndex()>0);
+  ui->tool_image_goPrev->setEnabled(ui->combo_image_name->currentIndex()>0);
+  ui->tool_image_goEnd->setEnabled(ui->combo_image_name->currentIndex()<(ui->combo_image_name->count()-1));
+  ui->tool_image_goNext->setEnabled(ui->combo_image_name->currentIndex()<(ui->combo_image_name->count()-1));
+  ui->label_image_index->setText( QString::number(ui->combo_image_name->currentIndex()+1)+"/"+QString::number(ui->combo_image_name->count()) );
+  static QList<QByteArray> writeableformats;
+  if(writeableformats.isEmpty()){
+    writeableformats  = QImageWriter::supportedImageFormats();
+    qDebug() << "Writeable image formats:" << writeableformats;
+  }
+  bool canwrite = writeableformats.contains(file.section(".",-1).toLower().toLocal8Bit()); //compare the suffix with the list
+  bool isUserWritable = QFileInfo(file).isWritable();
+  ui->tool_image_remove->setEnabled(isUserWritable);
+  ui->tool_image_rotateleft->setEnabled(isUserWritable && canwrite);
+  ui->tool_image_rotateright->setEnabled(isUserWritable && canwrite);
+  ui->tool_image_zoomin->setEnabled(zoom<2);
+  ui->tool_image_zoomout->setEnabled(zoom>0.25);
+}
+
+
+// =================
+//    PRIVATE SLOTS
+// =================
+// Picture rotation options
+void SlideshowWidget::on_combo_image_name_currentIndexChanged(int index){
+  if(index>=0 && !ui->combo_image_name->currentData().toString().isEmpty()){
+    zoom = 1; //always reset the zoom level when changing images
+    UpdateImage();
+  }
+}
+
+void SlideshowWidget::on_tool_image_goEnd_clicked(){
+  ui->combo_image_name->setCurrentIndex( ui->combo_image_name->count()-1 );
+}
+
+void SlideshowWidget::on_tool_image_goNext_clicked(){
+  ui->combo_image_name->setCurrentIndex( ui->combo_image_name->currentIndex()+1 );
+}
+
+void SlideshowWidget::on_tool_image_goPrev_clicked(){
+  ui->combo_image_name->setCurrentIndex( ui->combo_image_name->currentIndex()-1 );
+}
+
+void SlideshowWidget::on_tool_image_goBegin_clicked(){
+  ui->combo_image_name->setCurrentIndex(0);
+}
+
+// Picture modification options
+void SlideshowWidget::on_tool_image_remove_clicked(){
+  QString file = ui->combo_image_name->currentData().toString();
+  //Verify permanent removal of file/dir
+  if(QMessageBox::Yes != QMessageBox::question(this, tr("Verify Removal"), tr("WARNING: This will permanently delete the file from the system!")+"\n"+tr("Are you sure you want to continue?")+"\n\n"+file, QMessageBox::Yes | QMessageBox::No, QMessageBox::No) ){
+    return; //cancelled
+  }
+  if( QFile::remove(file) ){
+    int index = ui->combo_image_name->currentIndex();
+    ui->combo_image_name->removeItem( index );
+  }
+}
+
+void SlideshowWidget::on_tool_image_rotateleft_clicked(){
+  //First load the file fresh (not the scaled version in the UI)
+  QString file = ui->combo_image_name->currentData().toString();
+  QPixmap pix(file);	
+  //Now rotate the image 90 degrees counter-clockwise
+  QTransform trans;
+  pix = pix.transformed( trans.rotate(-90) , Qt::SmoothTransformation);
+  //Now save the image back to the same file
+  pix.save(file);
+  //Now re-load the image in the UI
+  UpdateImage();	
+}
+
+void SlideshowWidget::on_tool_image_rotateright_clicked(){
+  //First load the file fresh (not the scaled version in the UI)
+  QString file = ui->combo_image_name->currentData().toString();
+  QPixmap pix(file);	
+  //Now rotate the image 90 degrees counter-clockwise
+  QTransform trans;
+  pix = pix.transformed( trans.rotate(90) , Qt::SmoothTransformation);
+  //Now save the image back to the same file
+  pix.save(file);
+  //Now re-load the image in the UI
+  UpdateImage();	
+}
+
+void SlideshowWidget::on_tool_image_zoomin_clicked(){
+  zoom+=0.25; //change 25% every time
+  UpdateImage();
+}
+
+void SlideshowWidget::on_tool_image_zoomout_clicked(){
+  zoom-=0.25; //change 25% every time
+  UpdateImage();
+}
+