Mercurial > hg > svcore
view base/ColourDatabase.cpp @ 298:57d7889f626c
* Unload feature extraction plugin .so when destroyed
author | Chris Cannam |
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date | Fri, 28 Sep 2007 14:32:45 +0000 |
parents | 9a13687c078b |
children |
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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 "XmlExportable.h" #include <QPainter> ColourDatabase ColourDatabase::m_instance; ColourDatabase * ColourDatabase::getInstance() { return &m_instance; } ColourDatabase::ColourDatabase() { } int ColourDatabase::getColourCount() const { return m_colours.size(); } QString ColourDatabase::getColourName(int c) const { if (c < 0 || size_t(c) >= m_colours.size()) return ""; return m_colours[c].name; } QColor ColourDatabase::getColour(int c) const { if (c < 0 || size_t(c) >= m_colours.size()) return Qt::black; return m_colours[c].colour; } QColor ColourDatabase::getColour(QString name) const { for (ColourList::const_iterator i = m_colours.begin(); i != m_colours.end(); ++i) { if (i->name == name) return i->colour; } return Qt::black; } int ColourDatabase::getColourIndex(QString name) const { int index = 0; for (ColourList::const_iterator i = m_colours.begin(); i != m_colours.end(); ++i) { if (i->name == name) return index; ++index; } return -1; } int ColourDatabase::getColourIndex(QColor c) const { int index = 0; for (ColourList::const_iterator i = m_colours.begin(); i != m_colours.end(); ++i) { if (i->colour == c) return index; ++index; } return -1; } bool ColourDatabase::useDarkBackground(int c) const { if (c < 0 || size_t(c) >= m_colours.size()) return false; return m_colours[c].darkbg; } void ColourDatabase::setUseDarkBackground(int c, bool dark) { if (c < 0 || size_t(c) >= m_colours.size()) 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 (index < 0 || size_t(index) >= m_colours.size()) return; colourName = getColourName(index); colourSpec = XmlExportable::encodeColour(getColour(index)); 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; }