strawberry-audio-player-win.../src/core/iconloader.cpp

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/*
* Strawberry Music Player
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* Copyright 2013, 2017-2021, Jonas Kvinge <jonas@jkvinge.net>
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*
* Strawberry 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 3 of the License, or
* (at your option) any later version.
*
* Strawberry is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
#include "config.h"
#include <QDir>
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#include <QFile>
#include <QList>
#include <QString>
#include <QIcon>
#include <QSize>
#include <QStandardPaths>
#include <QSettings>
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#include "core/logging.h"
#include "iconmapper.h"
#include "settings/appearancesettingspage.h"
#include "iconloader.h"
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bool IconLoader::system_icons_ = false;
bool IconLoader::custom_icons_ = false;
void IconLoader::Init() {
#if !defined(Q_OS_MACOS) && !defined(Q_OS_WIN)
QSettings s;
s.beginGroup(AppearanceSettingsPage::kSettingsGroup);
system_icons_ = s.value("system_icons", false).toBool();
s.endGroup();
#endif
QDir dir;
if (dir.exists(QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation) + "/icons")) {
custom_icons_ = true;
}
}
QIcon IconLoader::Load(const QString &name, const int fixed_size, const int min_size, const int max_size) {
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QIcon ret;
if (name.isEmpty()) {
qLog(Error) << "Icon name is empty!";
return ret;
}
QList<int> sizes;
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if (fixed_size == 0) {
sizes << 22 << 32 << 48 << 64 << 128;
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}
else {
sizes << fixed_size;
}
if (system_icons_) {
IconMapper::IconProperties icon_prop;
if (IconMapper::iconmapper_.contains(name)) {
icon_prop = IconMapper::iconmapper_[name];
}
if (min_size != 0) icon_prop.min_size = min_size;
if (max_size != 0) icon_prop.max_size = max_size;
if (icon_prop.allow_system_icon) {
ret = QIcon::fromTheme(name);
if (ret.isNull()) {
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for (const QString &alt_name : icon_prop.names) {
ret = QIcon::fromTheme(alt_name);
if (!ret.isNull()) break;
}
if (ret.isNull()) {
qLog(Warning) << "Couldn't load icon" << name << "from system theme icons.";
}
}
if (!ret.isNull()) {
if (fixed_size != 0 && !ret.availableSizes().contains(QSize(fixed_size, fixed_size))) {
qLog(Warning) << "Can't use system icon for" << name << "icon does not have fixed size." << fixed_size;
ret = QIcon();
}
else {
int size_smallest = 0;
int size_largest = 0;
for (const QSize &s : ret.availableSizes()) {
if (s.width() != s.height()) {
qLog(Warning) << "Can't use system icon for" << name << "icon is not proportional.";
ret = QIcon();
}
if (size_smallest == 0 || s.width() < size_smallest) size_smallest = s.width();
if (s.width() > size_largest) size_largest = s.width();
}
if (size_smallest != 0 && icon_prop.min_size != 0 && size_smallest < icon_prop.min_size) {
qLog(Warning) << "Can't use system icon for" << name << "icon too small." << size_smallest;
ret = QIcon();
}
else if (size_largest != 0 && icon_prop.max_size != 0 && size_largest > icon_prop.max_size) {
qLog(Warning) << "Can't use system icon for" << name << "icon too large." << size_largest;
ret = QIcon();
}
}
}
}
if (!ret.isNull()) return ret;
}
if (custom_icons_) {
QString custom_icon_path = QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation) + "/icons/%1x%2/%3.png";
for (int s : sizes) {
QString filename(custom_icon_path.arg(s).arg(s).arg(name));
if (QFile::exists(filename)) ret.addFile(filename, QSize(s, s));
}
if (!ret.isNull()) return ret;
qLog(Warning) << "Couldn't load icon" << name << "from custom icons.";
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}
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const QString path(":/icons/%1x%2/%3.png");
for (int s : sizes) {
QString filename(path.arg(s).arg(s).arg(name));
if (QFile::exists(filename)) ret.addFile(filename, QSize(s, s));
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}
if (ret.isNull() && !system_icons_ && !custom_icons_) {
qLog(Error) << "Couldn't load icon" << name;
}
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return ret;
}