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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "compositor.h"
#include "window.h"
#include <QtWaylandCompositor/QWaylandOutput>
#include <QtWaylandCompositor/QWaylandXdgShell>
#include <QtWaylandCompositor/QWaylandSeat>
#include <QOpenGLFunctions>
QOpenGLTexture *View::getTexture() {
if (advance())
m_texture = currentBuffer().toOpenGLTexture();
return m_texture;
}
void View::setGlobalPosition(const QPoint &position)
{
if (m_globalPosition == position)
return;
m_globalPosition = position;
emit globalPositionChanged();
}
QPoint View::mapToLocal(const QPoint &globalPosition) const
{
return globalPosition - this->globalPosition();
}
void View::updateAnchoredPosition()
{
QPoint offset;
QSize size = surface()->bufferSize();
QSize delta = size - m_lastSize;
if (m_anchorEdges & Qt::RightEdge)
offset.setX(-delta.width());
if (m_anchorEdges & Qt::BottomEdge)
offset.setY(-delta.height());
setGlobalPosition(globalPosition() + offset);
m_lastSize = size;
}
void View::handleResizeMove(const QPoint &delta)
{
Q_UNUSED(delta);
qWarning() << "Resize not implemented for this view";
}
ToplevelView::ToplevelView(QWaylandXdgToplevel *toplevel)
: m_toplevel(toplevel)
{
QWaylandXdgSurface *xdgSurface = toplevel->xdgSurface();
setSurface(xdgSurface->surface());
connect(toplevel, &QWaylandXdgToplevel::startMove, this, &View::startMove);
connect(toplevel, &QWaylandXdgToplevel::startResize, this, [this](QWaylandSeat *, Qt::Edges edges) {
m_resize.edges = edges;
m_resize.initialSize = m_toplevel->xdgSurface()->windowGeometry().size();
Qt::Edges opposite = edges ^ Qt::Edges(0b1111);
setAnchorEdges(opposite);
emit startResize();
});
QList<QWaylandXdgToplevel::State> states{QWaylandXdgToplevel::ActivatedState};
toplevel->sendConfigure(QSize(0, 0), states);
}
void ToplevelView::handleResizeMove(const QPoint &delta)
{
QSize newSize = m_toplevel->sizeForResize(m_resize.initialSize, delta, m_resize.edges);
m_toplevel->sendResizing(newSize);
}
void ToplevelView::handleResizeRelease()
{
setAnchorEdges({});
m_resize.edges = {};
m_resize.initialSize = {};
}
Compositor::~Compositor()
{
delete m_xdgShell;
}
void Compositor::create()
{
QWaylandCompositor::create();
m_xdgShell = new QWaylandXdgShell(this);
connect(m_xdgShell, &QWaylandXdgShell::toplevelCreated, this, &Compositor::handleXdgToplevelCreated);
}
View *Compositor::viewAt(const QPoint &position)
{
// Since views are stored in painting order (back to front), we have to iterate backwards
// to find the topmost view at the given point
for (auto it = m_views.crbegin(); it != m_views.crend(); ++it) {
View *view = *it;
if (view->globalGeometry().contains(position))
return view;
}
return nullptr;
}
void Compositor::raise(View *view)
{
m_views.removeAll(view);
m_views << view;
defaultSeat()->setKeyboardFocus(view->surface());
triggerRender();
}
void Compositor::handleMousePress(const QPoint &position, Qt::MouseButton button)
{
if (m_grab.state == Grab::None) {
m_grab.view = viewAt(position);
if (m_grab.view) {
m_grab.state = Grab::Input;
m_grab.startGlobalPosition = position;
m_grab.startLocalPosition = m_grab.view->mapToLocal(position);
raise(m_grab.view);
}
}
switch (m_grab.state) {
case Grab::Input: {
auto *seat = defaultSeat();
seat->sendMouseMoveEvent(m_grab.view, m_grab.view->mapToLocal(position));
seat->sendMousePressEvent(button);
break;
}
case Grab::Move:
case Grab::Resize:
case Grab::None:
break;
}
}
void Compositor::handleMouseRelease(const QPoint &position, Qt::MouseButton button, Qt::MouseButtons buttons)
{
auto *seat = defaultSeat();
switch (m_grab.state) {
case Grab::Input:
seat->sendMouseMoveEvent(m_grab.view, m_grab.view->mapToLocal(position));
seat->sendMouseReleaseEvent(button);
if (buttons == Qt::NoButton) {
View *newView = viewAt(position);
if (newView != m_grab.view) {
seat->setMouseFocus(newView);
if (newView)
seat->sendMouseMoveEvent(newView, newView->mapToLocal(position));
}
m_grab.view = nullptr;
m_grab.state = Grab::None;
}
break;
case Grab::Move:
case Grab::Resize:
m_grab.state = Grab::None;
m_grab.view = nullptr;
if (View *view = viewAt(position))
seat->sendMouseMoveEvent(view, view->mapToLocal(position));
break;
case Grab::None:
if (View *view = viewAt(position))
seat->sendMouseMoveEvent(view, view->mapToLocal(position));
break;
}
}
void Compositor::handleMouseMove(const QPoint &position)
{
switch (m_grab.state) {
case Grab::Input:
defaultSeat()->sendMouseMoveEvent(m_grab.view, m_grab.view->mapToLocal(position));
break;
case Grab::None:
if (View *view = viewAt(position))
defaultSeat()->sendMouseMoveEvent(view, view->mapToLocal(position));
break;
case Grab::Resize:
m_grab.view->handleResizeMove(position - m_grab.startGlobalPosition);
break;
case Grab::Move:
m_grab.view->setGlobalPosition(position - m_grab.startLocalPosition);
break;
}
}
void Compositor::handleMouseWheel(Qt::Orientation orientation, int delta)
{
defaultSeat()->sendMouseWheelEvent(orientation, delta);
}
void Compositor::handleKeyPress(quint32 nativeScanCode)
{
defaultSeat()->sendKeyPressEvent(nativeScanCode);
}
void Compositor::handleKeyRelease(quint32 nativeScanCode)
{
defaultSeat()->sendKeyReleaseEvent(nativeScanCode);
}
void Compositor::handleXdgToplevelCreated(QWaylandXdgToplevel *toplevel, QWaylandXdgSurface *xdgSurface)
{
Q_UNUSED(xdgSurface);
auto *view = new ToplevelView(toplevel);
addView(view);
}
void Compositor::addView(View *view)
{
view->setOutput(outputFor(m_window));
m_views << view;
connect(view, &QWaylandView::surfaceDestroyed, this, &Compositor::handleViewSurfaceDestroyed);
connect(view, &View::globalPositionChanged, this, &Compositor::triggerRender);
connect(view->surface(), &QWaylandSurface::redraw, this, &Compositor::triggerRender);
connect(view, &View::startMove, this, [this, view](){
m_grab.view = view;
m_grab.state = Grab::Move;
});
connect(view, &View::startResize, this, [this, view]() {
m_grab.view = view;
m_grab.state = Grab::Resize;
});
}
void Compositor::handleViewSurfaceDestroyed()
{
auto *view = qobject_cast<ToplevelView*>(sender());
m_views.removeAll(view);
delete view;
triggerRender();
}
void Compositor::triggerRender()
{
m_window->requestUpdate();
}
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