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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qwaylandcursor_p.h"
#include "qwaylanddisplay_p.h"
#include "qwaylandinputdevice_p.h"
#include "qwaylandshmbackingstore_p.h"
#include <QtGui/QImageReader>
#include <QDebug>
#include <wayland-cursor.h>
#include <algorithm>
QT_BEGIN_NAMESPACE
namespace QtWaylandClient {
std::unique_ptr<QWaylandCursorTheme> QWaylandCursorTheme::create(QWaylandShm *shm, int size, const QString &themeName)
{
QByteArray nameBytes = themeName.toLocal8Bit();
struct ::wl_cursor_theme *theme = wl_cursor_theme_load(nameBytes.constData(), size, shm->object());
if (!theme) {
qCWarning(lcQpaWayland) << "Could not load cursor theme" << themeName << "size" << size;
return nullptr;
}
return std::unique_ptr<QWaylandCursorTheme>{new QWaylandCursorTheme(theme)};
}
QWaylandCursorTheme::~QWaylandCursorTheme()
{
wl_cursor_theme_destroy(m_theme);
}
wl_cursor *QWaylandCursorTheme::requestCursor(WaylandCursor shape)
{
if (struct wl_cursor *cursor = m_cursors[shape])
return cursor;
static Q_CONSTEXPR struct ShapeAndName {
WaylandCursor shape;
const char name[33];
} cursorNamesMap[] = {
{ArrowCursor, "left_ptr"},
{ArrowCursor, "default"},
{ArrowCursor, "top_left_arrow"},
{ArrowCursor, "left_arrow"},
{UpArrowCursor, "up_arrow"},
{CrossCursor, "cross"},
{WaitCursor, "wait"},
{WaitCursor, "watch"},
{WaitCursor, "0426c94ea35c87780ff01dc239897213"},
{IBeamCursor, "ibeam"},
{IBeamCursor, "text"},
{IBeamCursor, "xterm"},
{SizeVerCursor, "size_ver"},
{SizeVerCursor, "ns-resize"},
{SizeVerCursor, "v_double_arrow"},
{SizeVerCursor, "00008160000006810000408080010102"},
{SizeHorCursor, "size_hor"},
{SizeHorCursor, "ew-resize"},
{SizeHorCursor, "h_double_arrow"},
{SizeHorCursor, "028006030e0e7ebffc7f7070c0600140"},
{SizeBDiagCursor, "size_bdiag"},
{SizeBDiagCursor, "nesw-resize"},
{SizeBDiagCursor, "50585d75b494802d0151028115016902"},
{SizeBDiagCursor, "fcf1c3c7cd4491d801f1e1c78f100000"},
{SizeFDiagCursor, "size_fdiag"},
{SizeFDiagCursor, "nwse-resize"},
{SizeFDiagCursor, "38c5dff7c7b8962045400281044508d2"},
{SizeFDiagCursor, "c7088f0f3e6c8088236ef8e1e3e70000"},
{SizeAllCursor, "size_all"},
{BlankCursor, "blank"},
{SplitVCursor, "split_v"},
{SplitVCursor, "row-resize"},
{SplitVCursor, "sb_v_double_arrow"},
{SplitVCursor, "2870a09082c103050810ffdffffe0204"},
{SplitVCursor, "c07385c7190e701020ff7ffffd08103c"},
{SplitHCursor, "split_h"},
{SplitHCursor, "col-resize"},
{SplitHCursor, "sb_h_double_arrow"},
{SplitHCursor, "043a9f68147c53184671403ffa811cc5"},
{SplitHCursor, "14fef782d02440884392942c11205230"},
{PointingHandCursor, "pointing_hand"},
{PointingHandCursor, "pointer"},
{PointingHandCursor, "hand1"},
{PointingHandCursor, "e29285e634086352946a0e7090d73106"},
{ForbiddenCursor, "forbidden"},
{ForbiddenCursor, "not-allowed"},
{ForbiddenCursor, "crossed_circle"},
{ForbiddenCursor, "circle"},
{ForbiddenCursor, "03b6e0fcb3499374a867c041f52298f0"},
{WhatsThisCursor, "whats_this"},
{WhatsThisCursor, "help"},
{WhatsThisCursor, "question_arrow"},
{WhatsThisCursor, "5c6cd98b3f3ebcb1f9c7f1c204630408"},
{WhatsThisCursor, "d9ce0ab605698f320427677b458ad60b"},
{BusyCursor, "left_ptr_watch"},
{BusyCursor, "half-busy"},
{BusyCursor, "progress"},
{BusyCursor, "00000000000000020006000e7e9ffc3f"},
{BusyCursor, "08e8e1c95fe2fc01f976f1e063a24ccd"},
{OpenHandCursor, "openhand"},
{OpenHandCursor, "fleur"},
{OpenHandCursor, "5aca4d189052212118709018842178c0"},
{OpenHandCursor, "9d800788f1b08800ae810202380a0822"},
{ClosedHandCursor, "closedhand"},
{ClosedHandCursor, "grabbing"},
{ClosedHandCursor, "208530c400c041818281048008011002"},
{DragCopyCursor, "dnd-copy"},
{DragCopyCursor, "copy"},
{DragMoveCursor, "dnd-move"},
{DragMoveCursor, "move"},
{DragLinkCursor, "dnd-link"},
{DragLinkCursor, "link"},
{ResizeNorthCursor, "n-resize"},
{ResizeNorthCursor, "top_side"},
{ResizeSouthCursor, "s-resize"},
{ResizeSouthCursor, "bottom_side"},
{ResizeEastCursor, "e-resize"},
{ResizeEastCursor, "right_side"},
{ResizeWestCursor, "w-resize"},
{ResizeWestCursor, "left_side"},
{ResizeNorthWestCursor, "nw-resize"},
{ResizeNorthWestCursor, "top_left_corner"},
{ResizeSouthEastCursor, "se-resize"},
{ResizeSouthEastCursor, "bottom_right_corner"},
{ResizeNorthEastCursor, "ne-resize"},
{ResizeNorthEastCursor, "top_right_corner"},
{ResizeSouthWestCursor, "sw-resize"},
{ResizeSouthWestCursor, "bottom_left_corner"},
};
const auto byShape = [](ShapeAndName lhs, ShapeAndName rhs) {
return lhs.shape < rhs.shape;
};
Q_ASSERT(std::is_sorted(std::begin(cursorNamesMap), std::end(cursorNamesMap), byShape));
const auto p = std::equal_range(std::begin(cursorNamesMap), std::end(cursorNamesMap),
ShapeAndName{shape, ""}, byShape);
for (auto it = p.first; it != p.second; ++it) {
if (wl_cursor *cursor = wl_cursor_theme_get_cursor(m_theme, it->name)) {
m_cursors[shape] = cursor;
return cursor;
}
}
// Fallback to arrow cursor
if (shape != ArrowCursor)
return requestCursor(ArrowCursor);
// Give up
return nullptr;
}
::wl_cursor *QWaylandCursorTheme::cursor(Qt::CursorShape shape)
{
struct wl_cursor *waylandCursor = nullptr;
if (shape < Qt::BitmapCursor) {
waylandCursor = requestCursor(WaylandCursor(shape));
} else if (shape == Qt::BitmapCursor) {
qCWarning(lcQpaWayland) << "cannot create a wl_cursor_image for a CursorShape";
return nullptr;
} else {
//TODO: Custom cursor logic (for resize arrows)
}
if (!waylandCursor) {
qCWarning(lcQpaWayland) << "Could not find cursor for shape" << shape;
return nullptr;
}
return waylandCursor;
}
QWaylandCursor::QWaylandCursor(QWaylandDisplay *display)
: mDisplay(display)
{
}
QSharedPointer<QWaylandBuffer> QWaylandCursor::cursorBitmapBuffer(QWaylandDisplay *display, const QCursor *cursor)
{
Q_ASSERT(cursor->shape() == Qt::BitmapCursor);
const QImage &img = cursor->pixmap().toImage();
QSharedPointer<QWaylandShmBuffer> buffer(new QWaylandShmBuffer(display, img.size(), img.format()));
memcpy(buffer->image()->bits(), img.bits(), size_t(img.sizeInBytes()));
return buffer;
}
void QWaylandCursor::changeCursor(QCursor *cursor, QWindow *window)
{
Q_UNUSED(window);
// Create the buffer here so we don't have to create one per input device
QSharedPointer<QWaylandBuffer> bitmapBuffer;
if (cursor && cursor->shape() == Qt::BitmapCursor)
bitmapBuffer = cursorBitmapBuffer(mDisplay, cursor);
int fallbackOutputScale = int(window->devicePixelRatio());
const auto seats = mDisplay->inputDevices();
for (auto *seat : seats)
seat->setCursor(cursor, bitmapBuffer, fallbackOutputScale);
}
void QWaylandCursor::pointerEvent(const QMouseEvent &event)
{
mLastPos = event.globalPosition().toPoint();
}
QPoint QWaylandCursor::pos() const
{
return mLastPos;
}
void QWaylandCursor::setPos(const QPoint &pos)
{
Q_UNUSED(pos);
qCWarning(lcQpaWayland) << "Setting cursor position is not possible on wayland";
}
} // namespace QtWaylandClient
QT_END_NAMESPACE
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