From 9325eb5a7b2fad95968776a4868e4aaf65768e65 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luis=20=C3=81ngel=20San=20Mart=C3=ADn?=
 <luisangelsm@gmail.com>
Date: Sun, 2 Nov 2014 23:00:11 +0100
Subject: [PATCH] added drag support to classic and grid view. by now grid
 doesn't support multiple drags and pressents some secondary effects (cells
 are moved inside the grid, and target is not working properly)

---
 YACReaderLibrary/db/comic_model.cpp     |  2 +-
 YACReaderLibrary/qml/GridComicsView.qml | 11 ++++-
 custom_widgets/yacreader_table_view.cpp | 59 ++++++++++++++++---------
 3 files changed, 49 insertions(+), 23 deletions(-)

diff --git a/YACReaderLibrary/db/comic_model.cpp b/YACReaderLibrary/db/comic_model.cpp
index 2e47a166..4137970f 100644
--- a/YACReaderLibrary/db/comic_model.cpp
+++ b/YACReaderLibrary/db/comic_model.cpp
@@ -148,7 +148,7 @@ Qt::ItemFlags ComicModel::flags(const QModelIndex &index) const
 		return 0;
     if(index.column() == ComicModel::Rating)
 		return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsEditable;
-	return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
+    return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsDragEnabled;
 }
 //! [4]
 
diff --git a/YACReaderLibrary/qml/GridComicsView.qml b/YACReaderLibrary/qml/GridComicsView.qml
index 6acabb26..262cfcbc 100644
--- a/YACReaderLibrary/qml/GridComicsView.qml
+++ b/YACReaderLibrary/qml/GridComicsView.qml
@@ -28,6 +28,8 @@ Rectangle {
                 height: grid.cellHeight
                 color: backgroundColor
                 MouseArea {
+                    id: mouseArea
+                    drag.target: realCell
                      anchors.fill: parent
                      onClicked: {
                          comicsSelectionHelper.clear();
@@ -38,7 +40,14 @@ Rectangle {
                 Rectangle {
                     id: realCell
 
-                    width: 156; height: 287
+                    Drag.active: mouseArea.drag.active
+                    Drag.hotSpot.x: 32
+                    Drag.hotSpot.y: 32
+                    Drag.dragType: Drag.Automatic
+                    Drag.mimeData: { "text/plain": "comic" }
+                    Drag.proposedAction: Qt.CopyAction
+
+                                        width: 156; height: 287
                     color: ((dummyValue || !dummyValue) && comicsSelectionHelper.isSelectedIndex(index)) || grid.currentIndex === index?selectedColor:cellColor;
 
                     anchors.horizontalCenter: parent.horizontalCenter
diff --git a/custom_widgets/yacreader_table_view.cpp b/custom_widgets/yacreader_table_view.cpp
index 3b57356a..6ee76259 100644
--- a/custom_widgets/yacreader_table_view.cpp
+++ b/custom_widgets/yacreader_table_view.cpp
@@ -4,6 +4,8 @@
 #include <QResizeEvent>
 #include <QPropertyAnimation>
 #include <QPainter>
+#include <QDrag>
+#include <QMimeData>
 
 #include "comic_item.h"
 
@@ -47,9 +49,9 @@ YACReaderTableView::YACReaderTableView(QWidget *parent) :
 	//comicView->verticalHeader()->setResizeMode(QHeaderView::ResizeToContents);
 	verticalHeader()->setDefaultSectionSize(24);
 #if QT_VERSION >= 0x050000
-	verticalHeader()->setSectionsClickable(false); //TODO comportamiento anómalo
+	verticalHeader()->setSectionsClickable(false); //TODO comportamiento anómalo
 #else
-	verticalHeader()->setClickable(false); //TODO comportamiento anómalo
+	verticalHeader()->setClickable(false); //TODO comportamiento anómalo
 #endif
 
 	setCornerButtonEnabled(false);
@@ -65,6 +67,9 @@ YACReaderTableView::YACReaderTableView(QWidget *parent) :
 
 	showDeletingProgressAnimation = new QPropertyAnimation(deletingProgress,"pos");
 	showDeletingProgressAnimation->setDuration(150);*/
+
+    //drag
+    setDragEnabled(true);
 }
 
 void YACReaderTableView::mouseMoveEvent(QMouseEvent *event)
@@ -100,25 +105,37 @@ void YACReaderTableView::mouseMoveEvent(QMouseEvent *event)
 }
 void YACReaderTableView::mousePressEvent(QMouseEvent * event)
 {
-	QTableView::mousePressEvent(event);
-	QModelIndex mi = indexAt(event->pos());
-	if(mi.isValid())
-	{
-		QList<QModelIndex> selectedIndexes = this->selectedIndexes();
-		if(selectedIndexes.contains(mi))
-		{
-			if(mi.column() == 11)
-			{
-				if(!editing)
-				{
-					editing = true;
-					currentIndexEditing = mi;
-					edit(mi);
-					myeditor = indexWidget(mi);
-				}
-			}
-		}
-	}
+    QTableView::mousePressEvent(event);
+    QModelIndex mi = indexAt(event->pos());
+    if(mi.isValid())
+    {
+        QList<QModelIndex> selectedIndexes = this->selectedIndexes();
+        if(selectedIndexes.contains(mi))
+        {
+            if(mi.column() == 11)
+            {
+                if(!editing)
+                {
+                    editing = true;
+                    currentIndexEditing = mi;
+                    edit(mi);
+                    myeditor = indexWidget(mi);
+                }
+                return;
+            }
+        }
+    }
+
+    QMimeData *mimeData = new QMimeData;
+
+    mimeData->setText("comic"); //TODO set the right mime data
+
+    QDrag *drag = new QDrag(this);
+    drag->setMimeData(mimeData);
+    drag->setPixmap(QPixmap(":/images/openInYACReader.png")); //TODO add better image
+
+    Qt::DropAction dropAction = drag->exec(Qt::CopyAction | Qt::MoveAction, Qt::CopyAction);
+
 }
 void YACReaderTableView::leaveEvent(QEvent * event)
 {