Mercurial > hg > svgui
view layer/ColourDatabase.cpp @ 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 | e0f08e108064 |
children | a34a2a25907c |
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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. */ #include "ColourDatabase.h" #include "base/XmlExportable.h" #include <QPainter> ColourDatabase ColourDatabase::m_instance; ColourDatabase * ColourDatabase::getInstance() { return &m_instance; } ColourDatabase::ColourDatabase() { } int ColourDatabase::getColourCount() const { return int(m_colours.size()); } QString ColourDatabase::getColourName(int c) const { if (!in_range_for(m_colours, c)) return ""; return m_colours[c].name; } QColor ColourDatabase::getColour(int c) const { if (!in_range_for(m_colours, c)) return Qt::black; return m_colours[c].colour; } QColor ColourDatabase::getColour(QString name) const { for (auto &c: m_colours) { if (c.name == name) return c.colour; } return Qt::black; } int ColourDatabase::getColourIndex(QString name) const { int index = 0; for (auto &c: m_colours) { if (c.name == name) return index; ++index; } return -1; } int ColourDatabase::getColourIndex(QColor col) const { int index = 0; for (auto &c: m_colours) { if (c.colour == col) return index; ++index; } return -1; } bool ColourDatabase::useDarkBackground(int c) const { if (!in_range_for(m_colours, c)) return false; return m_colours[c].darkbg; } void ColourDatabase::setUseDarkBackground(int c, bool dark) { if (!in_range_for(m_colours, c)) return; if (m_colours[c].darkbg != dark) { m_colours[c].darkbg = dark; emit colourDatabaseChanged(); } } int ColourDatabase::addColour(QColor c, QString name) { int index = 0; for (ColourList::iterator i = m_colours.begin(); i != m_colours.end(); ++i) { if (i->name == name) { i->colour = c; return index; } ++index; } ColourRec rec; rec.colour = c; rec.name = name; rec.darkbg = false; m_colours.push_back(rec); emit colourDatabaseChanged(); return index; } void ColourDatabase::removeColour(QString name) { for (ColourList::iterator i = m_colours.begin(); i != m_colours.end(); ++i) { if (i->name == name) { m_colours.erase(i); return; } } } void ColourDatabase::getStringValues(int index, QString &colourName, QString &colourSpec, QString &darkbg) const { colourName = ""; colourSpec = ""; if (!in_range_for(m_colours, index)) return; colourName = getColourName(index); QColor c = getColour(index); colourSpec = XmlExportable::encodeColour(c.red(), c.green(), c.blue()); darkbg = useDarkBackground(index) ? "true" : "false"; } int ColourDatabase::putStringValues(QString colourName, QString colourSpec, QString darkbg) { int index = -1; if (colourSpec != "") { QColor colour(colourSpec); index = getColourIndex(colour); if (index < 0) { index = addColour(colour, colourName == "" ? colourSpec : colourName); } } else if (colourName != "") { index = getColourIndex(colourName); } if (index >= 0) { setUseDarkBackground(index, darkbg == "true"); } return index; } void ColourDatabase::getColourPropertyRange(int *min, int *max) const { ColourDatabase *db = getInstance(); if (min) *min = 0; if (max) { *max = 0; if (db->getColourCount() > 0) *max = db->getColourCount()-1; } } QPixmap ColourDatabase::getExamplePixmap(int index, QSize size) const { QPixmap pmap(size); pmap.fill(useDarkBackground(index) ? Qt::black : Qt::white); QPainter paint(&pmap); QColor colour(getColour(index)); paint.setPen(colour); paint.setBrush(colour); int margin = 2; if (size.width() < 4 || size.height() < 4) margin = 0; else if (size.width() < 8 || size.height() < 8) margin = 1; paint.drawRect(margin, margin, size.width() - margin*2 - 1, size.height() - margin*2 - 1); return pmap; }