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127 lines
3.9 KiB
127 lines
3.9 KiB
/*
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* Copyright (C) 2016 Hong Jen Yee (PCMan) <pcman.tw@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef FM_ICONENGINE_H
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#define FM_ICONENGINE_H
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#include <QIconEngine>
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#include <QPainter>
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#include "../libfmqtglobals.h"
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#include "iconinfo.h"
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#include <gio/gio.h>
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namespace Fm {
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class IconEngine: public QIconEngine {
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public:
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IconEngine(std::shared_ptr<const Fm::IconInfo> info, const bool& transparent = false);
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~IconEngine();
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virtual QSize actualSize(const QSize& size, QIcon::Mode mode, QIcon::State state) override;
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// not supported
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virtual void addFile(const QString& /*fileName*/, const QSize& /*size*/, QIcon::Mode /*mode*/, QIcon::State /*state*/) override {}
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// not supported
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virtual void addPixmap(const QPixmap& /*pixmap*/, QIcon::Mode /*mode*/, QIcon::State /*state*/) override {}
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virtual QIconEngine* clone() const override;
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virtual QString key() const override;
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virtual void paint(QPainter* painter, const QRect& rect, QIcon::Mode mode, QIcon::State state) override;
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virtual QPixmap pixmap(const QSize& size, QIcon::Mode mode, QIcon::State state) override;
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virtual void virtual_hook(int id, void* data) override;
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private:
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std::weak_ptr<const Fm::IconInfo> info_;
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bool transparent_;
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};
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IconEngine::IconEngine(std::shared_ptr<const IconInfo> info, const bool& transparent):
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info_{info}, transparent_{transparent} {
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}
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IconEngine::~IconEngine() {
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}
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QSize IconEngine::actualSize(const QSize& size, QIcon::Mode mode, QIcon::State state) {
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auto info = info_.lock();
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return info ? info->internalQicon().actualSize(size, mode, state) : QSize{};
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}
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QIconEngine* IconEngine::clone() const {
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IconEngine* engine = new IconEngine(info_.lock());
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return engine;
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}
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QString IconEngine::key() const {
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return QStringLiteral("Fm::IconEngine");
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}
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void IconEngine::paint(QPainter* painter, const QRect& rect, QIcon::Mode mode, QIcon::State state) {
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auto info = info_.lock();
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if(info) {
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if(transparent_) {
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painter->save();
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painter->setOpacity(0.45);
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}
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info->internalQicon().paint(painter, rect, Qt::AlignCenter, mode, state);
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if(transparent_) {
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painter->restore();
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}
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}
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}
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QPixmap IconEngine::pixmap(const QSize& size, QIcon::Mode mode, QIcon::State state) {
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auto info = info_.lock();
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return info ? info->internalQicon().pixmap(size, mode, state) : QPixmap{};
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}
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void IconEngine::virtual_hook(int id, void* data) {
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auto info = info_.lock();
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switch(id) {
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case QIconEngine::AvailableSizesHook: {
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auto* args = reinterpret_cast<QIconEngine::AvailableSizesArgument*>(data);
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args->sizes = info ? info->internalQicon().availableSizes(args->mode, args->state) : QList<QSize>{};
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break;
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}
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case QIconEngine::IconNameHook: {
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QString* result = reinterpret_cast<QString*>(data);
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*result = info ? info->internalQicon().name() : QString{};
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break;
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}
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#if QT_VERSION >= QT_VERSION_CHECK(5, 7, 0)
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case QIconEngine::IsNullHook: {
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bool* result = reinterpret_cast<bool*>(data);
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*result = info ? info->internalQicon().isNull() : true;
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break;
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}
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#endif
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}
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}
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} // namespace Fm
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#endif // FM_ICONENGINE_H
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