implement basic drag-and-drop support in qt

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7508 a592a061-630c-0410-9148-cb99ea01b6c8

src/BufferView_pimpl.C

@@ -955,37 +955,49 @@ void BufferView::Pimpl::trackChanges()
 }
 
 
-// Doesn't go through lyxfunc, so we need to update the
-// layout choice etc. ourselves
-bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
+bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev)
 {
-	// e.g. Qt mouse press when no buffer
-	if (!available())
-		return false;
+	switch (ev.action) {
+	case LFUN_MOUSE_PRESS:
+	case LFUN_MOUSE_MOTION:
+	case LFUN_MOUSE_RELEASE:
+	case LFUN_MOUSE_DOUBLE:
+	case LFUN_MOUSE_TRIPLE:
+	{
+		// We pass those directly to the Bufferview, since
+		// otherwise selection handling breaks down
 
-	screen().hideCursor();
+		// Doesn't go through lyxfunc, so we need to update
+		// the layout choice etc. ourselves
 
-	// Make sure that the cached BufferView is correct.
-	FuncRequest ev = ev_in;
-	ev.setView(bv_);
+		// e.g. Qt mouse press when no buffer
+		if (!available())
+			return false;
 
-	bool const res = dispatch(ev);
+		screen().hideCursor();
 
-	// see workAreaKeyPress
-	cursor_timeout.restart();
-	screen().showCursor(*bv_);
+		bool const res = dispatch(ev);
+		
+		// see workAreaKeyPress
+		cursor_timeout.restart();
+		screen().showCursor(*bv_);
 
-	// FIXME: we should skip these when selecting
-	bv_->owner()->updateLayoutChoice();
-	bv_->owner()->updateToolbar();
-	bv_->fitCursor();
+		// FIXME: we should skip these when selecting
+		owner_->updateLayoutChoice();
+		owner_->updateToolbar();
+		fitCursor();
 
-	// slight hack: this is only called currently when
-	// we clicked somewhere, so we force through the display
-	// of the new status here.
-	bv_->owner()->clearMessage();
+		// slight hack: this is only called currently when we
+		// clicked somewhere, so we force through the display
+		// of the new status here.
+		owner_->clearMessage();
 
-	return res;
+		return res;
+	}
+	default:
+		owner_->dispatch(ev);
+		return true;
+	}
 }
 
 

src/ChangeLog

@@ -1,3 +1,8 @@
+2003-08-05  Jean-Marc Lasgouttes  <lasgouttes@lyx.org>
+
+	* BufferView_pimpl.C (workAreaDispatch): change to use
+	LyXView::dispatch instead of BufferView::Pimpl::dispatch for lfuns
+	that are no mouse related.
 
 2003-08-05  André Pönitz  <poenitz@gmx.net>
 

src/frontends/qt2/ChangeLog

@@ -1,3 +1,9 @@
+2003-08-05  Jean-Marc Lasgouttes  <lasgouttes@lyx.org>
+
+	* QWorkArea.C (QWorkArea): 
+	(dragEnterEvent): 
+	(dropEvent): add support for drag and drop of URIs
+
 2003-08-03  Jean-Marc Lasgouttes  <lasgouttes@lyx.org>
 
 	* ui/moc/Makefile.am (INCLUDES): forgot to use QT_INCLUDES

src/frontends/qt2/QWorkArea.C

@@ -11,20 +11,15 @@
 #include <config.h>
 
 
-#include "debug.h"
-#include "LyXView.h"
-#include "version.h" // lyx_version
-
-#include "support/filetools.h" // LibFileSearch
-#include "support/lstrings.h"
-#include "support/LAssert.h"
-
 #include "QWorkArea.h"
+#include "debug.h"
+#include "lfuns.h"
 #include "qt_helpers.h"
 #include "lcolorcache.h"
 
 #include <qapplication.h>
 #include <qevent.h>
+#include <qdragobject.h>
 #include <qpainter.h>
 #include <qmainwindow.h>
 #include <qlayout.h>
@@ -34,13 +29,9 @@
 #include <X11/Xlib.h>
 #endif
 
-#include <cmath>
 #include <cctype>
 
 using std::endl;
-using std::abs;
-using std::hex;
-
 
 QWorkArea::QWorkArea(int, int, int, int)
 	: WorkArea(), QWidget(qApp->mainWidget()), painter_(*this)
@@ -51,6 +42,7 @@ QWorkArea::QWorkArea(int, int, int, int)
 	(static_cast<QMainWindow*>(qApp->mainWidget()))->setCentralWidget(this);
 
 	setFocusProxy(content_);
+	setAcceptDrops(true);
 
 	content_->show();
 
@@ -142,3 +134,23 @@ void QWorkArea::putClipboard(string const & str) const
 #endif
 	QApplication::clipboard()->setText(toqstr(str));
 }
+
+
+void QWorkArea::dragEnterEvent(QDragEnterEvent * event)
+{
+	event->accept(QUriDrag::canDecode(event));
+}
+
+
+void QWorkArea::dropEvent(QDropEvent* event)
+{
+	QStringList files;
+	
+	if (QUriDrag::decodeLocalFiles(event, files)) {
+		lyxerr[Debug::GUI] << "QWorkArea::dropEvent: got URIs!"
+				   << endl;
+		for (QStringList::Iterator i = files.begin();
+		     i!=files.end(); ++i)
+			dispatch(FuncRequest(LFUN_FILE_OPEN, fromqstr(*i)));
+	}
+}

src/frontends/qt2/QWorkArea.h

@@ -52,6 +52,10 @@ public:
 	virtual string const getClipboard() const;
 	///
 	virtual void putClipboard(string const &) const;
+	///
+	virtual void dragEnterEvent(QDragEnterEvent * event);
+	///
+	virtual void dropEvent(QDropEvent* event);
 
 	/// get the pixmap we paint on to
 	QPixmap * getPixmap() const { return content_->pixmap(); }