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282 lines
10 KiB
282 lines
10 KiB
/*
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* Copyright (C) 2013 - 2015 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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#include "proxyfoldermodel.h"
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#include "foldermodel.h"
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#include <QCollator>
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namespace Fm {
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ProxyFolderModel::ProxyFolderModel(QObject * parent):
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QSortFilterProxyModel(parent),
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thumbnailSize_(0),
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showHidden_(false),
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showThumbnails_(false),
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folderFirst_(true) {
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setDynamicSortFilter(true);
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setSortCaseSensitivity(Qt::CaseInsensitive);
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}
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ProxyFolderModel::~ProxyFolderModel() {
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qDebug("delete ProxyFolderModel");
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if(showThumbnails_ && thumbnailSize_ != 0) {
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FolderModel* srcModel = static_cast<FolderModel*>(sourceModel());
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// tell the source model that we don't need the thumnails anymore
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if(srcModel) {
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srcModel->releaseThumbnails(thumbnailSize_);
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disconnect(srcModel, SIGNAL(thumbnailLoaded(QModelIndex,int)));
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}
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}
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}
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void ProxyFolderModel::setSourceModel(QAbstractItemModel* model) {
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if(model) {
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// we only support Fm::FolderModel
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Q_ASSERT(model->inherits("Fm::FolderModel"));
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if(showThumbnails_ && thumbnailSize_ != 0) { // if we're showing thumbnails
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FolderModel* oldSrcModel = static_cast<FolderModel*>(sourceModel());
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FolderModel* newSrcModel = static_cast<FolderModel*>(model);
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if(oldSrcModel) { // we need to release cached thumbnails for the old source model
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oldSrcModel->releaseThumbnails(thumbnailSize_);
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disconnect(oldSrcModel, SIGNAL(thumbnailLoaded(QModelIndex,int)));
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}
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if(newSrcModel) { // tell the new source model that we want thumbnails of this size
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newSrcModel->cacheThumbnails(thumbnailSize_);
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connect(newSrcModel, &FolderModel::thumbnailLoaded, this, &ProxyFolderModel::onThumbnailLoaded);
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}
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}
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}
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QSortFilterProxyModel::setSourceModel(model);
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}
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void ProxyFolderModel::sort(int column, Qt::SortOrder order) {
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int oldColumn = sortColumn();
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Qt::SortOrder oldOrder = sortOrder();
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QSortFilterProxyModel::sort(column, order);
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if(column != oldColumn || order != oldOrder) {
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Q_EMIT sortFilterChanged();
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}
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}
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void ProxyFolderModel::setShowHidden(bool show) {
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if(show != showHidden_) {
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showHidden_ = show;
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invalidateFilter();
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Q_EMIT sortFilterChanged();
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}
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}
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// need to call invalidateFilter() manually.
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void ProxyFolderModel::setFolderFirst(bool folderFirst) {
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if(folderFirst != folderFirst_) {
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folderFirst_ = folderFirst;
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invalidate();
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Q_EMIT sortFilterChanged();
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}
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}
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bool ProxyFolderModel::filterAcceptsRow(int source_row, const QModelIndex & source_parent) const {
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if(!showHidden_) {
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QAbstractItemModel* srcModel = sourceModel();
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QString name = srcModel->data(srcModel->index(source_row, 0, source_parent)).toString();
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if(name.startsWith(".") || name.endsWith("~"))
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return false;
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}
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// apply additional filters if there're any
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Q_FOREACH(ProxyFolderModelFilter* filter, filters_) {
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FolderModel* srcModel = static_cast<FolderModel*>(sourceModel());
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FmFileInfo* fileInfo = srcModel->fileInfoFromIndex(srcModel->index(source_row, 0, source_parent));
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if(!filter->filterAcceptsRow(this, fileInfo))
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return false;
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}
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return true;
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}
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bool ProxyFolderModel::lessThan(const QModelIndex& left, const QModelIndex& right) const {
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FolderModel* srcModel = static_cast<FolderModel*>(sourceModel());
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// left and right are indexes of source model, not the proxy model.
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if(srcModel) {
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FmFileInfo* leftInfo = srcModel->fileInfoFromIndex(left);
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FmFileInfo* rightInfo = srcModel->fileInfoFromIndex(right);
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if(Q_UNLIKELY(!leftInfo || !rightInfo)) {
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// In theory, this should not happen, but it's safer to add the null check.
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// This is reported in https://github.com/lxde/pcmanfm-qt/issues/205
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return false;
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}
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if(folderFirst_) {
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bool leftIsFolder = (bool)fm_file_info_is_dir(leftInfo);
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bool rightIsFolder = (bool)fm_file_info_is_dir(rightInfo);
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if(leftIsFolder != rightIsFolder)
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return sortOrder() == Qt::AscendingOrder ? leftIsFolder : rightIsFolder;
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}
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switch(sortColumn()) {
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case FolderModel::ColumnFileName:
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if(sortCaseSensitivity() == Qt::CaseSensitive) {
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// fm_file_info_get_collate_key_nocasefold() uses g_utf8_casefold() from glib internally, which
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// is only an approximation not working correctly in some locales.
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// FIXME: we may use QCollator (since Qt 5.2) for this, but the performance impact is unknown
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return strcmp(fm_file_info_get_collate_key_nocasefold(leftInfo), fm_file_info_get_collate_key_nocasefold(rightInfo)) < 0;
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/*
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QCollator coll;
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coll.setCaseSensitivity(Qt::CaseSensitive);
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coll.setIgnorePunctuation(false);
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coll.setNumericMode(true);
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return coll.compare(QString::fromUtf8(fm_file_info_get_disp_name(leftInfo)), QString::fromUtf8(fm_file_info_get_disp_name(rightInfo))) < 0;
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*/
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}
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else {
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// linguistic case insensitive ordering
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return strcmp(fm_file_info_get_collate_key(leftInfo), fm_file_info_get_collate_key(rightInfo)) < 0;
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}
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case FolderModel::ColumnFileMTime:
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return fm_file_info_get_mtime(leftInfo) < fm_file_info_get_mtime(rightInfo);
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case FolderModel::ColumnFileSize:
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return fm_file_info_get_size(leftInfo) < fm_file_info_get_size(rightInfo);
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case FolderModel::ColumnFileOwner:
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// TODO: sort by owner
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break;
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case FolderModel::ColumnFileType:
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break;
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}
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}
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return QSortFilterProxyModel::lessThan(left, right);
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}
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FmFileInfo* ProxyFolderModel::fileInfoFromIndex(const QModelIndex& index) const {
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FolderModel* srcModel = static_cast<FolderModel*>(sourceModel());
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if(srcModel) {
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QModelIndex srcIndex = mapToSource(index);
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return srcModel->fileInfoFromIndex(srcIndex);
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}
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return NULL;
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}
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void ProxyFolderModel::setShowThumbnails(bool show) {
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if(show != showThumbnails_) {
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showThumbnails_ = show;
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FolderModel* srcModel = static_cast<FolderModel*>(sourceModel());
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if(srcModel && thumbnailSize_ != 0) {
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if(show) {
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// ask for cache of thumbnails of the new size in source model
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srcModel->cacheThumbnails(thumbnailSize_);
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// connect to the srcModel so we can be notified when a thumbnail is loaded.
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connect(srcModel, &FolderModel::thumbnailLoaded, this, &ProxyFolderModel::onThumbnailLoaded);
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}
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else { // turn off thumbnails
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// free cached old thumbnails in souce model
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srcModel->releaseThumbnails(thumbnailSize_);
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disconnect(srcModel, SIGNAL(thumbnailLoaded(QModelIndex,int)));
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}
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// reload all items, FIXME: can we only update items previously having thumbnails
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Q_EMIT dataChanged(index(0, 0), index(rowCount() - 1, 0));
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}
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}
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}
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void ProxyFolderModel::setThumbnailSize(int size) {
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if(size != thumbnailSize_) {
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FolderModel* srcModel = static_cast<FolderModel*>(sourceModel());
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if(showThumbnails_ && srcModel) {
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// free cached thumbnails of the old size
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if(thumbnailSize_ != 0)
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srcModel->releaseThumbnails(thumbnailSize_);
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else {
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// if the old thumbnail size is 0, we did not turn on thumbnail initially
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connect(srcModel, &FolderModel::thumbnailLoaded, this, &ProxyFolderModel::onThumbnailLoaded);
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}
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// ask for cache of thumbnails of the new size in source model
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srcModel->cacheThumbnails(size);
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// reload all items, FIXME: can we only update items previously having thumbnails
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Q_EMIT dataChanged(index(0, 0), index(rowCount() - 1, 0));
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}
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thumbnailSize_ = size;
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}
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}
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QVariant ProxyFolderModel::data(const QModelIndex& index, int role) const {
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if(index.column() == 0) { // only show the decoration role for the first column
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if(role == Qt::DecorationRole && showThumbnails_ && thumbnailSize_) {
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// we need to show thumbnails instead of icons
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FolderModel* srcModel = static_cast<FolderModel*>(sourceModel());
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QModelIndex srcIndex = mapToSource(index);
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QImage image = srcModel->thumbnailFromIndex(srcIndex, thumbnailSize_);
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if(!image.isNull()) // if we got a thumbnail of the desired size, use it
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return QVariant(image);
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}
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}
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// fallback to icons if thumbnails are not available
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return QSortFilterProxyModel::data(index, role);
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}
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void ProxyFolderModel::onThumbnailLoaded(const QModelIndex& srcIndex, int size) {
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// FolderModel* srcModel = static_cast<FolderModel*>(sourceModel());
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// FolderModelItem* item = srcModel->itemFromIndex(srcIndex);
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// qDebug("ProxyFolderModel::onThumbnailLoaded: %d, %s", size, item->displayName.toUtf8().data());
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if(size == thumbnailSize_) { // if a thumbnail of the size we want is loaded
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QModelIndex index = mapFromSource(srcIndex);
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Q_EMIT dataChanged(index, index);
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}
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}
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void ProxyFolderModel::addFilter(ProxyFolderModelFilter* filter) {
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filters_.append(filter);
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invalidateFilter();
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Q_EMIT sortFilterChanged();
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}
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void ProxyFolderModel::removeFilter(ProxyFolderModelFilter* filter) {
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filters_.removeOne(filter);
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invalidateFilter();
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Q_EMIT sortFilterChanged();
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}
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void ProxyFolderModel::updateFilters() {
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invalidate();
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Q_EMIT sortFilterChanged();
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}
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#if 0
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void ProxyFolderModel::reloadAllThumbnails() {
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// reload all thumbnails and update UI
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FolderModel* srcModel = static_cast<FolderModel*>(sourceModel());
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if(srcModel) {
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int rows= rowCount();
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for(int row = 0; row < rows; ++row) {
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QModelIndex index = this->index(row, 0);
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QModelIndex srcIndex = mapToSource(index);
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QImage image = srcModel->thumbnailFromIndex(srcIndex, size);
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// tell the world that the item is changed to trigger a UI update
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if(!image.isNull())
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Q_EMIT dataChanged(index, index);
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}
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}
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}
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#endif
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} // namespace Fm
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