Mercurial > hg > svgui
view layer/SingleColourLayer.cpp @ 941:d6acb8e36605 tonioni
Simpler colours in level pan widget
author | Chris Cannam |
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date | Tue, 31 Mar 2015 14:08:06 +0100 |
parents | 1d526ba11a24 |
children | a5488775f880 |
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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 "SingleColourLayer.h" #include "ColourDatabase.h" #include "view/View.h" #include <iostream> #include <QTextStream> #include <QApplication> //#define DEBUG_COLOUR_SELECTION 1 SingleColourLayer::ColourRefCount SingleColourLayer::m_colourRefCount; SingleColourLayer::SingleColourLayer() : m_colour(0), m_colourExplicitlySet(false), m_defaultColourSet(false) { // Reference current colour because setDefaulColourFor // will unreference it before (possibly) changing it. refColor(); setDefaultColourFor(0); } SingleColourLayer::~SingleColourLayer() { unrefColor(); } QPixmap SingleColourLayer::getLayerPresentationPixmap(QSize size) const { return ColourDatabase::getInstance()->getExamplePixmap(m_colour, size); } bool SingleColourLayer::hasLightBackground() const { bool dark = ColourDatabase::getInstance()->useDarkBackground(m_colour); return !dark; } Layer::PropertyList SingleColourLayer::getProperties() const { PropertyList list = Layer::getProperties(); list.push_back("Colour"); return list; } QString SingleColourLayer::getPropertyLabel(const PropertyName &name) const { if (name == "Colour") return tr("Colour"); return ""; } Layer::PropertyType SingleColourLayer::getPropertyType(const PropertyName &name) const { if (name == "Colour") return ColourProperty; return InvalidProperty; } QString SingleColourLayer::getPropertyGroupName(const PropertyName &) const { return QString(); } int SingleColourLayer::getPropertyRangeAndValue(const PropertyName &name, int *min, int *max, int *deflt) const { int val = 0; int garbage0, garbage1, garbage2; if (!min) min = &garbage0; if (!max) max = &garbage1; if (!deflt) deflt = &garbage2; if (name == "Colour") { ColourDatabase::getInstance()->getColourPropertyRange(min, max); *deflt = 0; //!!! val = m_colour; } else { val = Layer::getPropertyRangeAndValue(name, min, max, deflt); } return val; } QString SingleColourLayer::getPropertyValueLabel(const PropertyName &name, int value) const { if (name == "Colour") { ColourDatabase *db = ColourDatabase::getInstance(); if (value >= 0 && value < db->getColourCount()) { return db->getColourName(value); } } return tr("<unknown>"); } RangeMapper * SingleColourLayer::getNewPropertyRangeMapper(const PropertyName &) const { return 0; } void SingleColourLayer::setProperty(const PropertyName &name, int value) { if (name == "Colour") { setBaseColour(value); } } void SingleColourLayer::setDefaultColourFor(View *v) { #ifdef DEBUG_COLOUR_SELECTION SVDEBUG << "SingleColourLayer::setDefaultColourFor: m_colourExplicitlySet = " << m_colourExplicitlySet << ", m_defaultColourSet " << m_defaultColourSet << endl; #endif if (m_colourExplicitlySet || m_defaultColourSet) return; if (v) m_defaultColourSet = true; // v==0 case doesn't really count bool dark = false; if (v) { dark = !v->hasLightBackground(); } else { QColor bg = QApplication::palette().color(QPalette::Window); if (bg.red() + bg.green() + bg.blue() < 384) dark = true; } ColourDatabase *cdb = ColourDatabase::getInstance(); int hint = -1; bool impose = false; if (v) { // We don't want to call this if !v because that probably // means we're being called from the constructor, and this is // a virtual function hint = getDefaultColourHint(dark, impose); #ifdef DEBUG_COLOUR_SELECTION cerr << "hint = " << hint << ", impose = " << impose << endl; #endif } else { #ifdef DEBUG_COLOUR_SELECTION cerr << "(from ctor)" << endl; #endif } if (hint >= 0 && impose) { setBaseColour(hint); return; } unrefColor(); int bestCount = 0, bestColour = -1; for (int i = 0; i < cdb->getColourCount(); ++i) { int index = i; if (hint > 0) index = (index + hint) % cdb->getColourCount(); if (cdb->useDarkBackground(index) != dark) continue; int count = 0; if (m_colourRefCount.find(index) != m_colourRefCount.end()) { count = m_colourRefCount[index]; } #ifdef DEBUG_COLOUR_SELECTION cerr << "index = " << index << ", count = " << count; #endif if (bestColour < 0 || count < bestCount) { bestColour = index; bestCount = count; #ifdef DEBUG_COLOUR_SELECTION cerr << " *"; #endif } #ifdef DEBUG_COLOUR_SELECTION cerr << endl; #endif } if (bestColour < 0) m_colour = 0; else m_colour = bestColour; refColor(); } void SingleColourLayer::setBaseColour(int colour) { m_colourExplicitlySet = true; if (m_colour == colour) return; refColor(); m_colour = colour; unrefColor(); flagBaseColourChanged(); emit layerParametersChanged(); } int SingleColourLayer::getBaseColour() const { return m_colour; } QColor SingleColourLayer::getBaseQColor() const { return ColourDatabase::getInstance()->getColour(m_colour); } QColor SingleColourLayer::getBackgroundQColor(View *v) const { return v->getBackground(); } QColor SingleColourLayer::getForegroundQColor(View *v) const { return v->getForeground(); } std::vector<QColor> SingleColourLayer::getPartialShades(View *v) const { std::vector<QColor> s; QColor base = getBaseQColor(); QColor bg = getBackgroundQColor(v); for (int i = 0; i < 3; ++i) { int red = base.red() + ((bg.red() - base.red()) * (i + 1)) / 4; int green = base.green() + ((bg.green() - base.green()) * (i + 1)) / 4; int blue = base.blue() + ((bg.blue() - base.blue()) * (i + 1)) / 4; s.push_back(QColor(red, green, blue)); } return s; } void SingleColourLayer::toXml(QTextStream &stream, QString indent, QString extraAttributes) const { QString s; QString colourName, colourSpec, darkbg; ColourDatabase::getInstance()->getStringValues (m_colour, colourName, colourSpec, darkbg); s += QString("colourName=\"%1\" " "colour=\"%2\" " "darkBackground=\"%3\" ") .arg(colourName) .arg(colourSpec) .arg(darkbg); Layer::toXml(stream, indent, extraAttributes + " " + s); } void SingleColourLayer::setProperties(const QXmlAttributes &attributes) { QString colourName = attributes.value("colourName"); QString colourSpec = attributes.value("colour"); QString darkbg = attributes.value("darkBackground"); int colour = ColourDatabase::getInstance()->putStringValues (colourName, colourSpec, darkbg); if (colour == -1) return; m_colourExplicitlySet = true; if (m_colour != colour) { #ifdef DEBUG_COLOUR_SELECTION SVDEBUG << "SingleColourLayer::setProperties: changing colour from " << m_colour << " to " << colour << endl; #endif unrefColor(); m_colour = colour; refColor(); flagBaseColourChanged(); } } void SingleColourLayer::refColor() { if (m_colourRefCount.find(m_colour) == m_colourRefCount.end()) { m_colourRefCount[m_colour] = 1; } else { m_colourRefCount[m_colour]++; } } void SingleColourLayer::unrefColor() { if (m_colourRefCount.find(m_colour) != m_colourRefCount.end() && m_colourRefCount[m_colour] > 0) { m_colourRefCount[m_colour]--; } }