Mercurial > hg > svgui
view widgets/NotifyingComboBox.h @ 1212:a1ee3108d1d3 3.0-integration
Make the colour 3d plot renderer able to support more than one level of peak cache; introduce a second "peak" cache for the spectrogram layer that actually has a 1-1 column relationship with the underlying FFT model, and use it in addition to the existing peak cache if memory is plentiful. Makes spectrograms appear much faster in many common situations.
author | Chris Cannam |
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date | Thu, 05 Jan 2017 14:02:54 +0000 |
parents | b1e3ee5f1be6 |
children | a18e78b9c78b |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2007 QMUL. 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. */ #ifndef SV_NOTIFYING_COMBO_BOX_H #define SV_NOTIFYING_COMBO_BOX_H #include <QComboBox> /** * Very trivial enhancement to QComboBox to make it emit signals when * the mouse enters and leaves (for context help). */ class NotifyingComboBox : public QComboBox { Q_OBJECT public: NotifyingComboBox(QWidget *parent = 0) : QComboBox(parent) { } virtual ~NotifyingComboBox(); signals: void mouseEntered(); void mouseLeft(); protected: virtual void enterEvent(QEvent *); virtual void leaveEvent(QEvent *); }; #endif