5edc23dbc5
Make sure that created empty QImages are filled with transparent pixels. Copying data from previous QImage on widget resize removes blanking on window resize when qt5 vcl plugin is used. Change-Id: If072a4b8b334bc87dbe4aaea9aa8774bb5e202ee Reviewed-on: https://gerrit.libreoffice.org/63029 Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de> Tested-by: Katarina Behrens <Katarina.Behrens@cib.de>
93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <Qt5VirtualDevice.hxx>
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#include <Qt5Graphics.hxx>
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#include <Qt5Tools.hxx>
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#include <QtGui/QImage>
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Qt5VirtualDevice::Qt5VirtualDevice(DeviceFormat eFormat, double fScale)
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: m_eFormat(eFormat)
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, m_fScale(fScale)
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{
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}
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SalGraphics* Qt5VirtualDevice::AcquireGraphics()
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{
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assert(m_pImage);
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Qt5Graphics* pGraphics = new Qt5Graphics(m_pImage.get());
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m_aGraphics.push_back(pGraphics);
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return pGraphics;
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}
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void Qt5VirtualDevice::ReleaseGraphics(SalGraphics* pGraphics)
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{
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m_aGraphics.remove(dynamic_cast<Qt5Graphics*>(pGraphics));
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delete pGraphics;
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}
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bool Qt5VirtualDevice::SetSize(long nNewDX, long nNewDY)
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{
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return SetSizeUsingBuffer(nNewDX, nNewDY, nullptr);
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}
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bool Qt5VirtualDevice::SetSizeUsingBuffer(long nNewDX, long nNewDY, sal_uInt8* pBuffer)
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{
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if (nNewDX == 0)
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nNewDX = 1;
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if (nNewDY == 0)
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nNewDY = 1;
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if (m_pImage && m_aFrameSize.width() == nNewDX && m_aFrameSize.height() == nNewDY)
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return true;
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m_aFrameSize = QSize(nNewDX, nNewDY);
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nNewDX *= m_fScale;
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nNewDY *= m_fScale;
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if (m_eFormat == DeviceFormat::BITMASK)
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{
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m_pImage.reset(new QImage(nNewDX, nNewDY, QImage::Format_Mono));
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}
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else
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{
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if (pBuffer)
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m_pImage.reset(new QImage(pBuffer, nNewDX, nNewDY, Qt5_DefaultFormat32));
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else
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m_pImage.reset(new QImage(nNewDX, nNewDY, Qt5_DefaultFormat32));
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}
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m_pImage->fill(Qt::transparent);
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m_pImage->setDevicePixelRatio(m_fScale);
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// update device in existing graphics
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for (auto pQt5Graph : m_aGraphics)
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pQt5Graph->ChangeQImage(m_pImage.get());
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return true;
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}
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long Qt5VirtualDevice::GetWidth() const { return m_pImage ? m_aFrameSize.width() : 0; }
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long Qt5VirtualDevice::GetHeight() const { return m_pImage ? m_aFrameSize.height() : 0; }
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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