88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
/*
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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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SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "scene_qpainter_x11_backend.h"
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#include "x11windowed_backend.h"
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#include "screens.h"
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namespace KWin
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{
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X11WindowedQPainterBackend::X11WindowedQPainterBackend(X11WindowedBackend *backend)
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: QPainterBackend()
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, m_backend(backend)
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{
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connect(screens(), &Screens::changed, this, &X11WindowedQPainterBackend::createOutputs);
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createOutputs();
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}
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X11WindowedQPainterBackend::~X11WindowedQPainterBackend()
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{
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qDeleteAll(m_outputs);
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if (m_gc) {
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xcb_free_gc(m_backend->connection(), m_gc);
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}
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}
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void X11WindowedQPainterBackend::createOutputs()
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{
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qDeleteAll(m_outputs);
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m_outputs.clear();
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for (int i = 0; i < screens()->count(); ++i) {
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Output *output = new Output;
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output->window = m_backend->windowForScreen(i);
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output->buffer = QImage(screens()->size(i) * screens()->scale(i), QImage::Format_RGB32);
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output->buffer.fill(Qt::black);
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m_outputs << output;
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}
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m_needsFullRepaint = true;
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}
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QImage *X11WindowedQPainterBackend::buffer()
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{
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return bufferForScreen(0);
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}
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QImage *X11WindowedQPainterBackend::bufferForScreen(int screen)
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{
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return &m_outputs.at(screen)->buffer;
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}
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bool X11WindowedQPainterBackend::needsFullRepaint() const
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{
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return m_needsFullRepaint;
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}
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void X11WindowedQPainterBackend::prepareRenderingFrame()
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{
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}
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void X11WindowedQPainterBackend::present(int mask, const QRegion &damage)
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{
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Q_UNUSED(mask)
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Q_UNUSED(damage)
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xcb_connection_t *c = m_backend->connection();
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const xcb_window_t window = m_backend->window();
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if (m_gc == XCB_NONE) {
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m_gc = xcb_generate_id(c);
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xcb_create_gc(c, m_gc, window, 0, nullptr);
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}
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for (auto it = m_outputs.constBegin(); it != m_outputs.constEnd(); ++it) {
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// TODO: only update changes?
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const QImage &buffer = (*it)->buffer;
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xcb_put_image(c, XCB_IMAGE_FORMAT_Z_PIXMAP, (*it)->window, m_gc,
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buffer.width(), buffer.height(), 0, 0, 0, 24,
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buffer.sizeInBytes(), buffer.constBits());
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}
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}
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bool X11WindowedQPainterBackend::perScreenRendering() const
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{
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return true;
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}
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}
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