From: hama <hama@siduction.net>
Date: Tue, 3 Nov 2015 23:50:41 +0000 (+0100)
Subject: drag-drop basics
X-Git-Url: https://gitweb.hamatoma.de/?a=commitdiff_plain;h=d0fabad7990b9231d535e9504c17d57b58e06111;p=reqt

drag-drop basics
---

diff --git a/guiwidget/ReFileTable.cpp b/guiwidget/ReFileTable.cpp
index c1fe2e1..2fcd940 100644
--- a/guiwidget/ReFileTable.cpp
+++ b/guiwidget/ReFileTable.cpp
@@ -49,6 +49,10 @@ ReFileTable::ReFileTable(QWidget *parent) :
 	tableWidget->setColumnWidth(TYPE, 60);
 	tableWidget->setColumnWidth(SIZE, 125);
 	tableWidget->setColumnWidth(MODIFIED, 175);
+	tableWidget->setDragDropMode(QAbstractItemView::DragDrop);
+	tableWidget->setDragEnabled(true);
+	tableWidget->setDragDropOverwriteMode(true);
+	tableWidget->setAcceptDrops(true);
 	connect(pushButtonUp, SIGNAL(clicked()), SLOT(pushButtonUpClicked()));
 	connect(pushButtonRoot, SIGNAL(clicked()), SLOT(pushButtonRootClicked()));
 	connect(tableWidget, SIGNAL(cellDoubleClicked(int, int)), this,
@@ -106,6 +110,53 @@ QString ReFileTable::cellAsText(int row, int col){
    return rc;
 }
 
+/**
+ * Processes the dragging operation of the selected files in the table widget.
+ */
+void ReFileTable::fileDragging(){
+   QDrag *drag = new QDrag(this);
+   QMimeData *mimeData = new QMimeData;
+   QList < QUrl > urls;
+   QList < QTableWidgetSelectionRange > ranges =
+	  tableWidget->selectedRanges();
+   QList <QTableWidgetSelectionRange>::iterator it;
+   int files = 0;
+   int dirs = 0;
+   bool isDir = false;
+   for (it = ranges.begin(); it != ranges.end(); ++it){
+	  for (int row = (*it).topRow(); row <= (*it).bottomRow(); row++){
+		 isDir = cellAsText(row, SIZE).isEmpty();
+		 QUrl url(buildAbsPath(row, true, true));
+		 urls.append(url);
+		 if (isDir)
+			dirs++;
+		 else
+			files++;
+	  }
+   }
+   if (urls.size() > 0){
+	  mimeData->setUrls(urls);
+	  drag->setMimeData(mimeData);
+	  QPixmap image(200, 30);
+	  QPainter painter(&image);
+	  QString msg;
+	  if (urls.size() == 1)
+		 msg = tr("copy ") + ReFileUtils::nodeOf(urls.at(0).toString());
+	  else if (files > 0 && dirs > 0)
+		 msg = tr("copy %1 file(s) and %2 dir(s)").arg(files).arg(dirs);
+	  else if (files > 0)
+		 msg = tr("copy %1 file(s)").arg(files);
+	  else
+		 msg = tr("copy %1 dirs(s)").arg(dirs);
+
+	  painter.fillRect(image.rect(), Qt::white);
+	  painter.drawText(10, 20, msg);
+	  drag->setPixmap(image);
+
+	  Qt::DropAction dropAction = drag->exec(Qt::CopyAction);
+   }
+}
+
 /**
  * Copies the selected files into the clipboard.
  *
@@ -143,6 +194,25 @@ void ReFileTable::copyToClipboard(int currentRow, const QString& full){
 	say(LOG_INFO,
 	   tr("%1 entry/entries copied to clipboard").arg(urls.length()));
 }
+/**
+ * Handles the event "drag enter".
+ *
+ * @param event	the event data
+ */
+void ReFileTable::dragEnterEvent(QDragEnterEvent *event)
+{
+	if (event->mimeData()->hasFormat("text/uri-list"))
+		event->acceptProposedAction();
+}
+
+void ReFileTable::dropEvent(QDropEvent *event)
+{
+	QList<QUrl> urls = event->mimeData()->urls();
+	if (! urls.isEmpty()){
+		QString fileName = urls.first().toLocalFile();
+		say(LOG_INFO, "copy " + fileName);
+	}
+}
 
 /**
  * Fills the table with the file data of the filesystem.
diff --git a/guiwidget/ReFileTable.hpp b/guiwidget/ReFileTable.hpp
index 379b163..b634643 100644
--- a/guiwidget/ReFileTable.hpp
+++ b/guiwidget/ReFileTable.hpp
@@ -29,6 +29,9 @@ public:
 	void changePatterns(const QString& patterns);
 	bool changeDirectory(QString directory);
 public:
+	virtual void dragEnterEvent(QDragEnterEvent* event);
+	virtual void dropEvent(QDropEvent* event);
+	virtual void fileDragging();
 	virtual void keyPressEvent(QKeyEvent* event);
 public slots:
 	void tableDoubleClicked(int row, int column);
diff --git a/guiwidget/reguiwidget.hpp b/guiwidget/reguiwidget.hpp
index 0325f8f..c43e5fd 100644
--- a/guiwidget/reguiwidget.hpp
+++ b/guiwidget/reguiwidget.hpp
@@ -30,6 +30,7 @@
 #include "QClipboard"
 #include "QMimeData"
 #include "QUrl"
+#include "QDrag"
 #include "guiwidget/ReFileTable.hpp"
 #endif // REGUIWIDGET_HPP