mirror of
https://github.com/RetroShare/RetroShare.git
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81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
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/****************************************************************
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* RetroShare is distributed under the following license:
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*
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* Copyright (C) 2012 RetroShare Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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****************************************************************/
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#include <QLayout>
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#include <QApplication>
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#include <QScrollArea>
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#include "FeedHolder.h"
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/** Constructor */
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FeedHolder::FeedHolder()
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{
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mLockCount = 0;
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}
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// Workaround for QTBUG-3372
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void FeedHolder::lockLayout(QWidget *feedItem, bool lock)
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{
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if (lock) {
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if (mLockCount == 0) {
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QScrollArea *scrollArea = getScrollArea();
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if (scrollArea) {
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// disable update
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scrollArea->setUpdatesEnabled(false);
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QWidget *widget = scrollArea->widget();
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if (widget && widget->layout()) {
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// disable layout
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widget->layout()->setEnabled(false);
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}
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}
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}
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++mLockCount;
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} else {
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--mLockCount;
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if (mLockCount == 0) {
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QScrollArea *scrollArea = getScrollArea();
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if (scrollArea) {
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if (feedItem && !feedItem->isHidden()) {
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// show window without hide it
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// something in show causes a recalculation of the layout
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feedItem->setAttribute(Qt::WA_WState_Hidden, true);
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feedItem->show();
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}
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// enable update
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scrollArea->setUpdatesEnabled(true);
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// recalculate layout
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QWidget *widget = scrollArea->widget();
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if (widget && widget->layout()) {
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// enable layout
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widget->layout()->setEnabled(true);
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}
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// send layout request (without event queue) but with the newly calculated sizeHint from the call to :show
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QApplication::sendEvent(scrollArea, new QEvent(QEvent::LayoutRequest));
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}
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}
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mLockCount = qMax(mLockCount, 0);
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}
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}
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