Add new files forgotton in last commit

src/basewindow.cpp

@@ -0,0 +1,152 @@
+/**
+ *  This file is a part of promoe, an XMMS2 Client
+ *
+ *  Copyright (C) 2008 Thomas Frauendorfer
+ *
+ *  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.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+
+#include "basewindow.h"
+
+#include <QApplication>
+#include <QWidgetList>
+#include <QMouseEvent>
+#include <QPoint>
+
+BaseWindow::BaseWindow (QWidget *parent) : QMainWindow (parent)
+{
+}
+
+void
+BaseWindow::mousePressEvent (QMouseEvent *event)
+{
+	if (event->buttons () & Qt::LeftButton) {
+		m_diff = event->pos ();
+	}
+}
+
+void
+BaseWindow::mouseReleaseEvent (QMouseEvent *event)
+{
+	if (event->buttons () & Qt::LeftButton) {
+		m_diff = QPoint (0, 0);
+	}
+}
+
+void
+BaseWindow::mouseMoveEvent (QMouseEvent *event)
+{
+	// Only move, if the left button is pressed
+	if ((event->buttons () & Qt::LeftButton) && !m_diff.isNull ()) {
+		move (snapWindow (event->globalPos() - m_diff));
+	}
+
+}
+
+QPoint
+BaseWindow::snapWindow(QPoint pos)
+{
+	//TODO: make snapdistance configurable
+	qint32 snapdistance = 10;
+
+	qint32 left = pos.x ();
+	qint32 right = left + width ();
+	qint32 top = pos.y ();
+	qint32 bottom = top + height ();
+
+	qDebug ("top: %i, bottom: %i, left: %i, right: %i", top, bottom, left, right);
+	QWidgetList widgets = qApp->topLevelWidgets ();
+	QWidget *w;
+	// snap to left or right edge
+	bool snappedV = false;
+	bool snappedH = false;
+	foreach (w, widgets) {
+		if (w == this) {
+			continue;
+		}
+		if (!w->isVisible ()) {
+			continue;
+		}
+		qint32 w_left = w->x ();
+		qint32 w_right = w_left + w->width ();
+		qint32 w_top = w->y ();
+		qint32 w_bottom = w_top + w->height ();
+		// test if we are anywhere near this widget
+		if ((w_top > bottom + snapdistance) ||
+		    (w_bottom < top - snapdistance) ||
+			(w_left > right + snapdistance) ||
+			(w_right < left - snapdistance)) {
+			continue;
+		}
+
+		// test if this widget can snap left or right to another widget
+		// and if it can, test if the tops or bottoms can also snap
+		if (!snappedV && (qAbs (w_left - right) < snapdistance)) {
+			pos.setX (w_left - width ());
+			snappedV = true;
+			if (snappedH) {
+				break;
+			}
+			if (qAbs (w_bottom - bottom) < snapdistance) {
+				pos.setY (w_bottom - height ());
+				break;
+			} else if (qAbs (w_top - top) < snapdistance) {
+				pos.setY (w_top);
+				break;
+			}
+		} else if (!snappedV && (qAbs (left - w_right) < snapdistance)) {
+			pos.setX (w_right);
+			snappedV = true;
+			if (snappedH) {
+				break;
+			}
+			if (qAbs (w_bottom - bottom) < snapdistance) {
+				pos.setY (w_bottom - height ());
+				break;
+			} else if (qAbs (w_top - top) < snapdistance) {
+				pos.setY (w_top);
+				break;
+			}
+		}
+		// test if this widget can snap to top or bottom of another widget
+		// and if it can, test if the left or right edges also can
+		if (!snappedH && (qAbs (top - w_bottom) < snapdistance)) {
+			pos.setY (w_bottom);
+			snappedH = true;
+			if (snappedV) {
+				break;
+			}
+			if (qAbs (w_left - left) < snapdistance) {
+				pos.setX (w_left);
+				break;
+			} else if (qAbs (w_right - right) < snapdistance) {
+				pos.setX (w_right - width ());
+				break;
+			}
+		} else if (!snappedH && (qAbs (w_top - bottom) < snapdistance)) {
+			pos.setY (w_top - height ());
+			snappedH = true;
+			if (snappedV) {
+				break;
+			}
+			if (qAbs (w_left - left) < snapdistance) {
+				pos.setX (w_left);
+				break;
+			} else if (qAbs (w_right - right) < snapdistance) {
+				pos.setX (w_right - width ());
+				break;
+			}
+
+		}
+	}
+
+	return pos;
+}

src/basewindow.h

@@ -0,0 +1,41 @@
+/**
+ *  This file is a part of promoe, an XMMS2 Client
+ *
+ *  Copyright (C) 2008 Thomas Frauendorfer
+ *
+ *  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.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ */
+
+#ifndef __BASEWINDOW_H__
+#define __BASEWINDOW_H__
+
+#include <QMainWindow>
+class QMouseEvent;
+class QPoint;
+
+class BaseWindow : public QMainWindow {
+	Q_OBJECT
+
+	public:
+		BaseWindow (QWidget *parent);
+
+	protected:
+		void mousePressEvent (QMouseEvent *event);
+		void mouseReleaseEvent (QMouseEvent *event);
+		void mouseMoveEvent (QMouseEvent *event);
+
+		QPoint snapWindow (QPoint pos);
+
+	private:
+		QPoint m_diff;
+};
+
+#endif