120 lines
3.4 KiB
C++
120 lines
3.4 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
#include "window.h"
|
|
#include "backingstore.h"
|
|
#include "../../wayland_server.h"
|
|
|
|
#include <KWayland/Client/connection_thread.h>
|
|
#include <KWayland/Client/buffer.h>
|
|
#include <KWayland/Client/shm_pool.h>
|
|
#include <KWayland/Client/surface.h>
|
|
|
|
namespace KWin
|
|
{
|
|
namespace QPA
|
|
{
|
|
|
|
BackingStore::BackingStore(QWindow *w, KWayland::Client::ShmPool *shm)
|
|
: QPlatformBackingStore(w)
|
|
, m_shm(shm)
|
|
, m_backBuffer(QSize(), QImage::Format_ARGB32_Premultiplied)
|
|
{
|
|
QObject::connect(m_shm, &KWayland::Client::ShmPool::poolResized,
|
|
[this] {
|
|
if (!m_buffer) {
|
|
return;
|
|
}
|
|
auto b = m_buffer.toStrongRef();
|
|
if (!b->isUsed()){
|
|
return;
|
|
}
|
|
const QSize size = m_backBuffer.size();
|
|
m_backBuffer = QImage(b->address(), size.width(), size.height(), QImage::Format_ARGB32_Premultiplied);
|
|
}
|
|
);
|
|
}
|
|
|
|
BackingStore::~BackingStore() = default;
|
|
|
|
QPaintDevice *BackingStore::paintDevice()
|
|
{
|
|
return &m_backBuffer;
|
|
}
|
|
|
|
void BackingStore::resize(const QSize &size, const QRegion &staticContents)
|
|
{
|
|
Q_UNUSED(staticContents)
|
|
m_size = size;
|
|
if (!m_buffer) {
|
|
return;
|
|
}
|
|
m_buffer.toStrongRef()->setUsed(false);
|
|
m_buffer.clear();
|
|
}
|
|
|
|
void BackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset)
|
|
{
|
|
Q_UNUSED(region)
|
|
Q_UNUSED(offset)
|
|
auto s = static_cast<Window *>(window->handle())->surface();
|
|
if (!s) {
|
|
return;
|
|
}
|
|
s->attachBuffer(m_buffer);
|
|
// TODO: proper damage region
|
|
s->damage(QRect(QPoint(0, 0), m_backBuffer.size()));
|
|
s->commit(KWayland::Client::Surface::CommitFlag::None);
|
|
waylandServer()->internalClientConection()->flush();
|
|
waylandServer()->dispatch();
|
|
}
|
|
|
|
void BackingStore::beginPaint(const QRegion&)
|
|
{
|
|
if (m_buffer) {
|
|
auto b = m_buffer.toStrongRef();
|
|
if (b->isReleased()) {
|
|
// we can re-use this buffer
|
|
b->setReleased(false);
|
|
return;
|
|
} else {
|
|
// buffer is still in use, get a new one
|
|
b->setUsed(false);
|
|
}
|
|
}
|
|
auto oldBuffer = m_buffer.toStrongRef();
|
|
m_buffer.clear();
|
|
m_buffer = m_shm->getBuffer(m_size, m_size.width() * 4);
|
|
if (!m_buffer) {
|
|
m_backBuffer = QImage();
|
|
return;
|
|
}
|
|
auto b = m_buffer.toStrongRef();
|
|
b->setUsed(true);
|
|
m_backBuffer = QImage(b->address(), m_size.width(), m_size.height(), QImage::Format_ARGB32_Premultiplied);
|
|
if (oldBuffer) {
|
|
b->copy(oldBuffer->address());
|
|
} else {
|
|
m_backBuffer.fill(Qt::transparent);
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|