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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;
}
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