118 lines
3.6 KiB
C++
118 lines
3.6 KiB
C++
/*
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* Copyright (C) 2016 Jolla Ltd.
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* Contact: Slava Monich <slava.monich@jolla.com>
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*
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* You may use this file under the terms of the BSD license as follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Jolla Ltd nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "BooksImageProvider.h"
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#include "HarbourDebug.h"
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const QString BooksImageProvider::PROVIDER_ID("bookImage");
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BooksImageProvider* BooksImageProvider::gInstance = NULL;
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BooksImageProvider*
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BooksImageProvider::instance()
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{
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if (!gInstance) {
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new BooksImageProvider;
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}
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return gInstance;
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}
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BooksImageProvider::BooksImageProvider(
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QObject* aParent) :
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QObject(aParent),
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QQuickImageProvider(QQuickImageProvider::Image)
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{
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gInstance = this;
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}
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BooksImageProvider::~BooksImageProvider()
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{
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if (gInstance == this) {
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gInstance = NULL;
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}
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}
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void
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BooksImageProvider::addImage(
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QObject* aOwner,
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QString aId,
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QImage aImage)
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{
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if (aOwner && !aId.isEmpty() && !aImage.isNull()) {
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QMutexLocker locker(&iMutex);
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QStringList ids = iOwnerMap.value(aOwner);
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if (ids.isEmpty()) {
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connect(aOwner, SIGNAL(destroyed(QObject*)),
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SLOT(releaseImages(QObject*)));
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}
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ids.append(aId);
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iOwnerMap.insert(aOwner, ids);
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iImageMap.insert(aId, aImage);
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}
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}
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void
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BooksImageProvider::releaseImages(
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QObject* aOwner)
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{
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QMutexLocker locker(&iMutex);
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const QStringList ids = iOwnerMap.take(aOwner);
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const int n = ids.count();
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for (int i=0; i<n; i++) {
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HDEBUG(ids.at(i));
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iImageMap.remove(ids.at(i));
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}
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}
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QImage
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BooksImageProvider::requestImage(
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const QString& aId,
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QSize* aSize,
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const QSize& aRequestedSize)
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{
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QMutexLocker locker(&iMutex);
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QImage image = iImageMap.value(aId);
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if (!image.isNull()) {
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HDEBUG(aId << image.size());
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if (aRequestedSize.isEmpty() || image.size() == aRequestedSize) {
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*aSize = image.size();
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return image;
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} else {
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*aSize = aRequestedSize;
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return image.scaled(aRequestedSize, Qt::IgnoreAspectRatio,
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Qt::SmoothTransformation);
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}
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} else {
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HWARN("No such image:" << aId);
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}
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return QImage();
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}
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