diff panned.cpp @ 45:4286836bb3c9

* Some more work on graph layout; ensure LANG is set for parseable UTF8 output when running Hg

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/panned.cpp	Wed Nov 10 12:44:11 2010 +0000
@@ -0,0 +1,90 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+    Copyright 2000-2010 the Rosegarden development team.
+
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "panned.h"
+
+#include <QScrollBar>
+
+#include <iostream>
+
+Panned::Panned()
+{
+}
+
+void
+Panned::resizeEvent(QResizeEvent *ev)
+{
+    QPointF near = mapToScene(0, 0);
+    QPointF far = mapToScene(width(), height());
+    QSizeF sz(far.x()-near.x(), far.y()-near.y());
+    QRectF pr(near, sz);
+
+    if (pr != m_pannedRect) {
+        m_pannedRect = pr;
+        emit pannedRectChanged(pr);
+    }
+
+    QGraphicsView::resizeEvent(ev);
+}
+
+void
+Panned::paintEvent(QPaintEvent *e)
+{
+    QGraphicsView::paintEvent(e);
+}
+
+void
+Panned::drawForeground(QPainter *paint, const QRectF &)
+{
+    QPointF near = mapToScene(0, 0);
+    QPointF far = mapToScene(width(), height());
+    QSizeF sz(far.x()-near.x(), far.y()-near.y());
+    QRectF pr(near, sz);
+
+    if (pr != m_pannedRect) {
+        if (pr.x() != m_pannedRect.x()) emit pannedContentsScrolled();
+        m_pannedRect = pr;
+        emit pannedRectChanged(pr);
+    }
+}
+
+void
+Panned::slotSetPannedRect(QRectF pr)
+{
+    centerOn(pr.center());
+//	setSceneRect(pr);
+//	m_pannedRect = pr;
+}
+
+void
+Panned::wheelEvent(QWheelEvent *ev)
+{
+    emit wheelEventReceived(ev);
+    QGraphicsView::wheelEvent(ev);
+}
+
+void
+Panned::slotEmulateWheelEvent(QWheelEvent *ev)
+{
+    QGraphicsView::wheelEvent(ev);
+}
+
+void
+Panned::leaveEvent(QEvent *)
+{
+    emit mouseLeaves();
+}