Add keyboard actions to PictureViewer2

Never, ever forget: QVariant() casts to a valid int! Again, this was a
tough one, but maybe I shouldn't drink and program.
PictureViewer2 reacts to Escape and Space. Escape hides it and stops the
slide timer, Space activates the slide timer.

1 files changed, 34 insertions, 2 deletions

diff --git a/pictureviewer2.cpp b/pictureviewer2.cpp
index d5a6300..a5f250b 100644
--- a/pictureviewer2.cpp
+++ b/pictureviewer2.cpp
@@ -99,8 +99,8 @@ void PictureViewer2::previous(){
     showFile(mFiles.at(mCurPos));
 }
 
-void PictureViewer2::slide(){
-    if(mSlideTimer->isActive()){
+void PictureViewer2::slide(bool){
+     if(mSlideTimer->isActive()){
         mSlideTimer->stop();
     }else{
         mSlideTimer->start(5000);
@@ -126,6 +126,22 @@ void PictureViewer2::shuffle(){
     std::random_shuffle(mFiles.begin(), mFiles.end());
 }
 
+void PictureViewer2::initActions(){
+    foreach(QAction *a, actions()){
+        //never, ever forget this when casting to int
+        //an invalid QVariant casts to a valid int!
+        if(!a->data().isValid()){
+            continue;
+        }
+        if(a->data().toInt() == HideAction){
+            mHideA = a;
+        }
+        if(a->data().toInt() == SlideAction){
+            mSlideA = a;
+        }
+    }
+}
+
 void PictureViewer2::wheelEvent(QWheelEvent *event){
     int steps = event->delta() / 8 / 15;
     if(steps < 0){
@@ -143,6 +159,22 @@ void PictureViewer2::contextMenuEvent(QContextMenuEvent *e){
     ctxMenu.exec(e->globalPos());
 }
 
+void PictureViewer2::keyPressEvent(QKeyEvent *e){
+    if(e->key() == Qt::Key_Escape){
+        mHideA->toggle();
+    }
+    if(e->key() == Qt::Key_Space){
+        mSlideA->toggle();
+    }
+    e->accept();
+}
+
+void PictureViewer2::hideEvent(QHideEvent *){
+    if(mSlideTimer->isActive()){
+        mSlideA->toggle();
+    }
+}
+
 void PictureViewer2::showFile(const PicData &file){
     QPixmap pixmap(file.at(PicFilesModel::FullPath).toString());
     if(pixmap.isNull()){