diff options
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbbackingstore.cpp')
-rw-r--r-- | src/plugins/platforms/xcb/qxcbbackingstore.cpp | 119 |
1 files changed, 101 insertions, 18 deletions
diff --git a/src/plugins/platforms/xcb/qxcbbackingstore.cpp b/src/plugins/platforms/xcb/qxcbbackingstore.cpp index 42a868d997..c0f5477f82 100644 --- a/src/plugins/platforms/xcb/qxcbbackingstore.cpp +++ b/src/plugins/platforms/xcb/qxcbbackingstore.cpp @@ -1,7 +1,7 @@ /**************************************************************************** ** -** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ ** ** This file is part of the plugins of the Qt Toolkit. ** @@ -10,9 +10,9 @@ ** 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 Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser @@ -23,8 +23,8 @@ ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** $QT_END_LICENSE$ @@ -49,6 +49,7 @@ #include <qdebug.h> #include <qpainter.h> #include <qscreen.h> +#include <qpa/qplatformgraphicsbuffer.h> #include <algorithm> QT_BEGIN_NAMESPACE @@ -60,6 +61,8 @@ public: ~QXcbShmImage() { destroy(); } QImage *image() { return &m_qimage; } + QPlatformGraphicsBuffer *graphicsBuffer() { return m_graphics_buffer; } + QSize size() const { return m_qimage.size(); } void put(xcb_window_t window, const QPoint &dst, const QRect &source); @@ -73,6 +76,7 @@ private: xcb_image_t *m_xcb_image; QImage m_qimage; + QPlatformGraphicsBuffer *m_graphics_buffer; xcb_gcontext_t m_gc; xcb_window_t m_gc_window; @@ -80,8 +84,39 @@ private: QRegion m_dirty; }; +class QXcbShmGraphicsBuffer : public QPlatformGraphicsBuffer +{ +public: + QXcbShmGraphicsBuffer(QImage *image) + : QPlatformGraphicsBuffer(image->size(), QImage::toPixelFormat(image->format())) + , m_access_lock(QPlatformGraphicsBuffer::None) + , m_image(image) + { } + + bool doLock(AccessTypes access, const QRect &rect) Q_DECL_OVERRIDE + { + Q_UNUSED(rect); + if (access & ~(QPlatformGraphicsBuffer::SWReadAccess | QPlatformGraphicsBuffer::SWWriteAccess)) + return false; + + m_access_lock |= access; + return true; + } + void doUnlock() Q_DECL_OVERRIDE { m_access_lock = None; } + + const uchar *data() const Q_DECL_OVERRIDE { return m_image->bits(); } + uchar *data() Q_DECL_OVERRIDE { return m_image->bits(); } + int bytesPerLine() const Q_DECL_OVERRIDE { return m_image->bytesPerLine(); } + + Origin origin() const Q_DECL_OVERRIDE { return QPlatformGraphicsBuffer::OriginTopLeft; } +private: + AccessTypes m_access_lock; + QImage *m_image; +}; + QXcbShmImage::QXcbShmImage(QXcbScreen *screen, const QSize &size, uint depth, QImage::Format format) : QXcbObject(screen->connection()) + , m_graphics_buffer(Q_NULLPTR) , m_gc(0) , m_gc_window(0) { @@ -137,6 +172,7 @@ QXcbShmImage::QXcbShmImage(QXcbScreen *screen, const QSize &size, uint depth, QI } m_qimage = QImage( (uchar*) m_xcb_image->data, m_xcb_image->width, m_xcb_image->height, m_xcb_image->stride, format); + m_graphics_buffer = new QXcbShmGraphicsBuffer(&m_qimage); } void QXcbShmImage::destroy() @@ -158,6 +194,8 @@ void QXcbShmImage::destroy() if (m_gc) Q_XCB_CALL(xcb_free_gc(xcb_connection(), m_gc)); + delete m_graphics_buffer; + m_graphics_buffer = Q_NULLPTR; } void QXcbShmImage::put(xcb_window_t window, const QPoint &target, const QRect &source) @@ -265,21 +303,30 @@ QXcbBackingStore::~QXcbBackingStore() QPaintDevice *QXcbBackingStore::paintDevice() { - return m_image ? m_image->image() : 0; + if (!m_image) + return 0; + return m_rgbImage.isNull() ? m_image->image() : &m_rgbImage; } void QXcbBackingStore::beginPaint(const QRegion ®ion) { if (!m_image) return; - const int dpr = int(m_image->image()->devicePixelRatio()); - QRegion xRegion = dpr == 1 ? region : QTransform::fromScale(dpr,dpr).map(region); - m_image->preparePaint(xRegion); + + int dpr = int(m_image->image()->devicePixelRatio()); + const int windowDpr = int(window()->devicePixelRatio()); + if (windowDpr != dpr) { + resize(window()->size(), QRegion()); + dpr = int(m_image->image()->devicePixelRatio()); + } + + m_paintRegion = dpr == 1 ? region : QTransform::fromScale(dpr,dpr).map(region); + m_image->preparePaint(m_paintRegion); if (m_image->image()->hasAlphaChannel()) { - QPainter p(m_image->image()); + QPainter p(paintDevice()); p.setCompositionMode(QPainter::CompositionMode_Source); - const QVector<QRect> rects = xRegion.rects(); + const QVector<QRect> rects = m_paintRegion.rects(); const QColor blank = Qt::transparent; for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) { p.fillRect(*it, blank); @@ -287,17 +334,50 @@ void QXcbBackingStore::beginPaint(const QRegion ®ion) } } +void QXcbBackingStore::endPaint() +{ + QXcbWindow *platformWindow = static_cast<QXcbWindow *>(window()->handle()); + if (!platformWindow || !platformWindow->imageNeedsRgbSwap()) + return; + + // Slow path: the paint device was m_rgbImage. Now copy with swapping red + // and blue into m_image. + const QVector<QRect> rects = m_paintRegion.rects(); + if (rects.isEmpty()) + return; + QPainter p(m_image->image()); + for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) { + const QRect rect = *it; + p.drawImage(rect.topLeft(), m_rgbImage.copy(rect).rgbSwapped()); + } +} + +#ifndef QT_NO_OPENGL QImage QXcbBackingStore::toImage() const { return m_image && m_image->image() ? *m_image->image() : QImage(); } +#endif + +QPlatformGraphicsBuffer *QXcbBackingStore::graphicsBuffer() const +{ + return m_image ? m_image->graphicsBuffer() : Q_NULLPTR; +} void QXcbBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset) { if (!m_image || m_image->size().isEmpty()) return; - QSize imageSize = m_image->size(); + const int dpr = int(window->devicePixelRatio()); + +#ifndef QT_NO_DEBUG + const int imageDpr = int(m_image->image()->devicePixelRatio()); + if (dpr != imageDpr) + qWarning() << "QXcbBackingStore::flush() wrong devicePixelRatio for backingstore image" << dpr << imageDpr; +#endif + + QSize imageSize = m_image->size() / dpr; //because we multiply with the DPR later QRegion clipped = region; clipped &= QRect(0, 0, window->width(), window->height()); @@ -316,8 +396,6 @@ void QXcbBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoin return; } - const int dpr = int(window->devicePixelRatio()); - QVector<QRect> rects = clipped.rects(); for (int i = 0; i < rects.size(); ++i) { QRect rect = QRect(rects.at(i).topLeft() * dpr, rects.at(i).size() * dpr); @@ -354,8 +432,7 @@ void QXcbBackingStore::resize(const QSize &size, const QRegion &) { const int dpr = int(window()->devicePixelRatio()); const QSize xSize = size * dpr; - - if (m_image && xSize == m_image->size()) + if (m_image && xSize == m_image->size() && dpr == m_image->image()->devicePixelRatio()) return; Q_XCB_NOOP(connection()); @@ -370,6 +447,12 @@ void QXcbBackingStore::resize(const QSize &size, const QRegion &) delete m_image; m_image = new QXcbShmImage(screen, xSize, win->depth(), win->imageFormat()); m_image->image()->setDevicePixelRatio(dpr); + // Slow path for bgr888 VNC: Create an additional image, paint into that and + // swap R and B while copying to m_image after each paint. + if (win->imageNeedsRgbSwap()) { + m_rgbImage = QImage(xSize, win->imageFormat()); + m_rgbImage.setDevicePixelRatio(dpr); + } Q_XCB_NOOP(connection()); } |