| 1 | // Copyright (C) 2019 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QWAYLANDCURSORSURFACE_H |
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| 5 | #define QWAYLANDCURSORSURFACE_H |
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| 6 | |
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| 7 | #include "qwaylandsurface_p.h" |
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| 8 | #include "qwaylandcallback_p.h" |
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| 9 | |
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| 10 | QT_BEGIN_NAMESPACE |
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| 11 | |
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| 12 | namespace QtWaylandClient { |
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| 13 | |
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| 14 | #if QT_CONFIG(cursor) |
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| 15 | template <typename InputDevice> |
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| 16 | class CursorSurface : public QWaylandSurface |
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| 17 | { |
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| 18 | public: |
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| 19 | explicit CursorSurface(InputDevice *pointer, QWaylandDisplay *display) |
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| 20 | : QWaylandSurface(display), m_pointer(pointer) |
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| 21 | { |
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| 22 | connect(this, &QWaylandSurface::screensChanged, m_pointer, &InputDevice::updateCursor); |
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| 23 | } |
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| 24 | |
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| 25 | void reset() |
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| 26 | { |
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| 27 | m_setSerial = 0; |
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| 28 | m_hotspot = QPoint(); |
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| 29 | } |
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| 30 | |
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| 31 | // Size and hotspot are in surface coordinates |
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| 32 | void update(wl_buffer *buffer, const QPoint &hotspot, const QSize &size, int bufferScale, |
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| 33 | bool animated = false) |
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| 34 | { |
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| 35 | // Calling code needs to ensure buffer scale is supported if != 1 |
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| 36 | Q_ASSERT(bufferScale == 1 || version() >= 3); |
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| 37 | |
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| 38 | auto enterSerial = m_pointer->mEnterSerial; |
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| 39 | if (m_setSerial < enterSerial || m_hotspot != hotspot) { |
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| 40 | m_pointer->set_cursor(m_pointer->mEnterSerial, object(), hotspot.x(), hotspot.y()); |
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| 41 | m_setSerial = enterSerial; |
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| 42 | m_hotspot = hotspot; |
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| 43 | } |
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| 44 | |
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| 45 | if (version() >= 3) |
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| 46 | set_buffer_scale(bufferScale); |
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| 47 | |
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| 48 | attach(buffer, 0, 0); |
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| 49 | damage(0, 0, size.width(), size.height()); |
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| 50 | m_frameCallback.reset(); |
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| 51 | if (animated) { |
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| 52 | m_frameCallback.reset(other: new WlCallback(frame(), [this](uint32_t time) { |
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| 53 | Q_UNUSED(time); |
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| 54 | m_pointer->cursorFrameCallback(); |
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| 55 | })); |
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| 56 | } |
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| 57 | commit(); |
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| 58 | } |
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| 59 | |
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| 60 | int outputScale() const |
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| 61 | { |
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| 62 | int scale = 0; |
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| 63 | for (auto *screen : m_screens) |
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| 64 | scale = qMax(scale, screen->scale()); |
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| 65 | return scale; |
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| 66 | } |
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| 67 | |
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| 68 | private: |
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| 69 | QScopedPointer<WlCallback> m_frameCallback; |
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| 70 | InputDevice *m_pointer = nullptr; |
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| 71 | uint m_setSerial = 0; |
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| 72 | QPoint m_hotspot; |
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| 73 | }; |
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| 74 | |
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| 75 | #endif // QT_CONFIG(cursor) |
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| 76 | |
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| 77 | } // namespace QtWaylandClient |
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| 78 | |
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| 79 | QT_END_NAMESPACE |
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| 80 | |
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| 81 | #endif // QWAYLANDCURSORSURFACE_H |
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| 82 | |
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