diff options
Diffstat (limited to 'src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmcursor.cpp')
-rw-r--r-- | src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmcursor.cpp | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmcursor.cpp b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmcursor.cpp new file mode 100644 index 0000000000..d96c3964df --- /dev/null +++ b/src/plugins/platforms/eglfs/deviceintegration/eglfs_kms/qeglfskmsgbmcursor.cpp @@ -0,0 +1,245 @@ +/**************************************************************************** +** +** Copyright (C) 2015 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com> +** Copyright (C) 2016 The Qt Company Ltd. +** Copyright (C) 2016 Pelagicore AG +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qeglfskmsgbmcursor.h" +#include "qeglfskmsgbmscreen.h" +#include "qeglfskmsgbmdevice.h" + +#include <QtCore/QJsonDocument> +#include <QtCore/QJsonObject> +#include <QtCore/QJsonArray> +#include <QtCore/QLoggingCategory> +#include <QtGui/QPainter> + +#include <xf86drm.h> +#include <xf86drmMode.h> + +#ifndef DRM_CAP_CURSOR_WIDTH +#define DRM_CAP_CURSOR_WIDTH 0x8 +#endif + +#ifndef DRM_CAP_CURSOR_HEIGHT +#define DRM_CAP_CURSOR_HEIGHT 0x9 +#endif + +QT_BEGIN_NAMESPACE + +Q_DECLARE_LOGGING_CATEGORY(qLcEglfsKmsDebug) + +QEglFSKmsGbmCursor::QEglFSKmsGbmCursor(QEglFSKmsGbmScreen *screen) + : m_screen(screen) + , m_cursorSize(64, 64) // 64x64 is the old standard size, we now try to query the real size below + , m_bo(Q_NULLPTR) + , m_cursorImage(0, 0, 0, 0, 0, 0) + , m_visible(true) +{ + QByteArray hideCursorVal = qgetenv("QT_QPA_EGLFS_HIDECURSOR"); + if (!hideCursorVal.isEmpty()) + m_visible = hideCursorVal.toInt() == 0; + if (!m_visible) + return; + + uint64_t width, height; + if ((drmGetCap(m_screen->device()->fd(), DRM_CAP_CURSOR_WIDTH, &width) == 0) + && (drmGetCap(m_screen->device()->fd(), DRM_CAP_CURSOR_HEIGHT, &height) == 0)) { + m_cursorSize.setWidth(width); + m_cursorSize.setHeight(height); + } + + m_bo = gbm_bo_create(static_cast<QEglFSKmsGbmDevice *>(m_screen->device())->gbmDevice(), m_cursorSize.width(), m_cursorSize.height(), + GBM_FORMAT_ARGB8888, GBM_BO_USE_CURSOR_64X64 | GBM_BO_USE_WRITE); + if (!m_bo) { + qWarning("Could not create buffer for cursor!"); + } else { + initCursorAtlas(); + } + +#ifndef QT_NO_CURSOR + QCursor cursor(Qt::ArrowCursor); + changeCursor(&cursor, 0); +#endif + setPos(QPoint(0, 0)); +} + +QEglFSKmsGbmCursor::~QEglFSKmsGbmCursor() +{ + Q_FOREACH (QPlatformScreen *screen, m_screen->virtualSiblings()) { + QEglFSKmsScreen *kmsScreen = static_cast<QEglFSKmsScreen *>(screen); + drmModeSetCursor(kmsScreen->device()->fd(), kmsScreen->output().crtc_id, 0, 0, 0); + drmModeMoveCursor(kmsScreen->device()->fd(), kmsScreen->output().crtc_id, 0, 0); + } + + if (m_bo) { + gbm_bo_destroy(m_bo); + m_bo = Q_NULLPTR; + } +} + +void QEglFSKmsGbmCursor::pointerEvent(const QMouseEvent &event) +{ + setPos(event.screenPos().toPoint()); +} + +#ifndef QT_NO_CURSOR +void QEglFSKmsGbmCursor::changeCursor(QCursor *windowCursor, QWindow *window) +{ + Q_UNUSED(window); + + if (!m_bo) + return; + + if (!m_visible) + return; + + const Qt::CursorShape newShape = windowCursor ? windowCursor->shape() : Qt::ArrowCursor; + if (newShape == Qt::BitmapCursor) { + m_cursorImage.set(windowCursor->pixmap().toImage(), + windowCursor->hotSpot().x(), + windowCursor->hotSpot().y()); + } else { + // Standard cursor, look up in atlas + const int width = m_cursorAtlas.cursorWidth; + const int height = m_cursorAtlas.cursorHeight; + const qreal ws = (qreal)m_cursorAtlas.cursorWidth / m_cursorAtlas.width; + const qreal hs = (qreal)m_cursorAtlas.cursorHeight / m_cursorAtlas.height; + + QRect textureRect(ws * (newShape % m_cursorAtlas.cursorsPerRow) * m_cursorAtlas.width, + hs * (newShape / m_cursorAtlas.cursorsPerRow) * m_cursorAtlas.height, + width, + height); + QPoint hotSpot = m_cursorAtlas.hotSpots[newShape]; + m_cursorImage.set(m_cursorAtlas.image.copy(textureRect), + hotSpot.x(), + hotSpot.y()); + } + + if (m_cursorImage.image()->width() > m_cursorSize.width() || m_cursorImage.image()->height() > m_cursorSize.height()) + qWarning("Cursor larger than %dx%d, cursor will be clipped.", m_cursorSize.width(), m_cursorSize.height()); + + QImage cursorImage(m_cursorSize, QImage::Format_ARGB32); + cursorImage.fill(Qt::transparent); + + QPainter painter; + painter.begin(&cursorImage); + painter.drawImage(0, 0, *m_cursorImage.image()); + painter.end(); + + gbm_bo_write(m_bo, cursorImage.constBits(), cursorImage.byteCount()); + + uint32_t handle = gbm_bo_get_handle(m_bo).u32; + + Q_FOREACH (QPlatformScreen *screen, m_screen->virtualSiblings()) { + QEglFSKmsScreen *kmsScreen = static_cast<QEglFSKmsScreen *>(screen); + + int status = drmModeSetCursor(kmsScreen->device()->fd(), kmsScreen->output().crtc_id, handle, + m_cursorSize.width(), m_cursorSize.height()); + if (status != 0) + qWarning("Could not set cursor on screen %s: %d", kmsScreen->name().toLatin1().constData(), status); + } +} +#endif // QT_NO_CURSOR + +QPoint QEglFSKmsGbmCursor::pos() const +{ + return m_pos; +} + +void QEglFSKmsGbmCursor::setPos(const QPoint &pos) +{ + Q_FOREACH (QPlatformScreen *screen, m_screen->virtualSiblings()) { + QEglFSKmsScreen *kmsScreen = static_cast<QEglFSKmsScreen *>(screen); + QPoint origin = kmsScreen->geometry().topLeft(); + QPoint localPos = pos - origin; + QPoint adjustedPos = localPos - m_cursorImage.hotspot(); + + int ret = drmModeMoveCursor(kmsScreen->device()->fd(), kmsScreen->output().crtc_id, adjustedPos.x(), adjustedPos.y()); + if (ret == 0) + m_pos = pos; + else + qWarning("Failed to move cursor on screen %s: %d", kmsScreen->name().toLatin1().constData(), ret); + } +} + +void QEglFSKmsGbmCursor::initCursorAtlas() +{ + static QByteArray json = qgetenv("QT_QPA_EGLFS_CURSOR"); + if (json.isEmpty()) + json = ":/cursor.json"; + + qCDebug(qLcEglfsKmsDebug) << "Initializing cursor atlas from" << json; + + QFile file(QString::fromUtf8(json)); + if (!file.open(QFile::ReadOnly)) { + Q_FOREACH (QPlatformScreen *screen, m_screen->virtualSiblings()) { + QEglFSKmsScreen *kmsScreen = static_cast<QEglFSKmsScreen *>(screen); + drmModeSetCursor(kmsScreen->device()->fd(), kmsScreen->output().crtc_id, 0, 0, 0); + drmModeMoveCursor(kmsScreen->device()->fd(), kmsScreen->output().crtc_id, 0, 0); + } + m_visible = false; + return; + } + + QJsonDocument doc = QJsonDocument::fromJson(file.readAll()); + QJsonObject object = doc.object(); + + QString atlas = object.value(QLatin1String("image")).toString(); + Q_ASSERT(!atlas.isEmpty()); + + const int cursorsPerRow = object.value(QLatin1String("cursorsPerRow")).toDouble(); + Q_ASSERT(cursorsPerRow); + m_cursorAtlas.cursorsPerRow = cursorsPerRow; + + const QJsonArray hotSpots = object.value(QLatin1String("hotSpots")).toArray(); + Q_ASSERT(hotSpots.count() == Qt::LastCursor + 1); + for (int i = 0; i < hotSpots.count(); i++) { + QPoint hotSpot(hotSpots[i].toArray()[0].toDouble(), hotSpots[i].toArray()[1].toDouble()); + m_cursorAtlas.hotSpots << hotSpot; + } + + QImage image = QImage(atlas).convertToFormat(QImage::Format_ARGB32); + m_cursorAtlas.cursorWidth = image.width() / m_cursorAtlas.cursorsPerRow; + m_cursorAtlas.cursorHeight = image.height() / ((Qt::LastCursor + cursorsPerRow) / cursorsPerRow); + m_cursorAtlas.width = image.width(); + m_cursorAtlas.height = image.height(); + m_cursorAtlas.image = image; +} + +QT_END_NAMESPACE |