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116 lines
3.4 KiB
116 lines
3.4 KiB
/******************************************************************** |
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KWin - the KDE window manager |
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This file is part of the KDE project. |
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Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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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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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************/ |
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#include "window.h" |
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#include "backingstore.h" |
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#include "../../wayland_server.h" |
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#include <KWayland/Client/connection_thread.h> |
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#include <KWayland/Client/buffer.h> |
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#include <KWayland/Client/shm_pool.h> |
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#include <KWayland/Client/surface.h> |
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namespace KWin |
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{ |
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namespace QPA |
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{ |
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BackingStore::BackingStore(QWindow *w, KWayland::Client::ShmPool *shm) |
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: QPlatformBackingStore(w) |
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, m_shm(shm) |
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, m_backBuffer(QSize(), QImage::Format_ARGB32_Premultiplied) |
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{ |
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QObject::connect(m_shm, &KWayland::Client::ShmPool::poolResized, |
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[this] { |
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if (!m_buffer) { |
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return; |
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} |
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auto b = m_buffer.toStrongRef(); |
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if (!b->isUsed()){ |
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return; |
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} |
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const QSize size = m_backBuffer.size(); |
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m_backBuffer = QImage(b->address(), size.width(), size.height(), QImage::Format_ARGB32_Premultiplied); |
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} |
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); |
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} |
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BackingStore::~BackingStore() = default; |
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QPaintDevice *BackingStore::paintDevice() |
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{ |
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return &m_backBuffer; |
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} |
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void BackingStore::resize(const QSize &size, const QRegion &staticContents) |
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{ |
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Q_UNUSED(staticContents) |
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m_size = size; |
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if (!m_buffer) { |
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return; |
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} |
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m_buffer.toStrongRef()->setUsed(false); |
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m_buffer.clear(); |
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} |
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void BackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset) |
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{ |
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Q_UNUSED(region) |
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Q_UNUSED(offset) |
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auto s = static_cast<Window *>(window->handle())->surface(); |
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s->attachBuffer(m_buffer); |
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// TODO: proper damage region |
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s->damage(QRect(QPoint(0, 0), m_backBuffer.size())); |
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s->commit(KWayland::Client::Surface::CommitFlag::None); |
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waylandServer()->internalClientConection()->flush(); |
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waylandServer()->dispatch(); |
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} |
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void BackingStore::beginPaint(const QRegion&) |
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{ |
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if (m_buffer) { |
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auto b = m_buffer.toStrongRef(); |
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if (b->isReleased()) { |
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// we can re-use this buffer |
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b->setReleased(false); |
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return; |
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} else { |
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// buffer is still in use, get a new one |
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b->setUsed(false); |
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} |
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} |
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auto oldBuffer = m_buffer.toStrongRef(); |
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m_buffer.clear(); |
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m_buffer = m_shm->getBuffer(m_size, m_size.width() * 4); |
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if (!m_buffer) { |
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m_backBuffer = QImage(); |
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return; |
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} |
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auto b = m_buffer.toStrongRef(); |
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b->setUsed(true); |
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m_backBuffer = QImage(b->address(), m_size.width(), m_size.height(), QImage::Format_ARGB32_Premultiplied); |
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if (oldBuffer) { |
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b->copy(oldBuffer->address()); |
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} else { |
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m_backBuffer.fill(Qt::transparent); |
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} |
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} |
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} |
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}
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