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core/popupanchor: rework popup anchoring and add PopupAnchor

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This commit is contained in:
outfoxxed 2024-07-23 22:12:27 -07:00
parent 14910b1b60
commit ebfa8ec448
Signed by: outfoxxed
GPG key ID: 4C88A185FB89301E
14 changed files with 770 additions and 108 deletions
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99
src/wayland/popupanchor.cpp Normal file
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#include "popupanchor.hpp"
#include <private/qwayland-xdg-shell.h>
#include <private/qwaylandwindow_p.h>
#include <private/wayland-xdg-shell-client-protocol.h>
#include <qvariant.h>
#include <qwindow.h>
#include "../core/popupanchor.hpp"
#include "../core/types.hpp"
#include "xdgshell.hpp"
using QtWaylandClient::QWaylandWindow;
using XdgPositioner = QtWayland::xdg_positioner;
using qs::wayland::xdg_shell::XdgWmBase;
void WaylandPopupPositioner::reposition(PopupAnchor* anchor, QWindow* window, bool onlyIfDirty) {
if (onlyIfDirty && !anchor->isDirty()) return;
auto* waylandWindow = dynamic_cast<QWaylandWindow*>(window->handle());
auto* popupRole = waylandWindow ? waylandWindow->surfaceRole<::xdg_popup>() : nullptr;
anchor->markClean();
if (popupRole) {
auto* xdgWmBase = XdgWmBase::instance();
if (xdgWmBase->QtWayland::xdg_wm_base::version() < XDG_POPUP_REPOSITION_SINCE_VERSION) {
window->setVisible(false);
WaylandPopupPositioner::setFlags(anchor, window);
window->setVisible(true);
return;
}
auto positioner = XdgPositioner(xdgWmBase->create_positioner());
positioner.set_constraint_adjustment(anchor->adjustment().toInt());
auto anchorRect = anchor->rect();
positioner.set_anchor_rect(anchorRect.x, anchorRect.y, anchorRect.w, anchorRect.h);
XdgPositioner::anchor anchorFlag = XdgPositioner::anchor_none;
switch (anchor->edges()) {
case Edges::Top: anchorFlag = XdgPositioner::anchor_top; break;
case Edges::Top | Edges::Right: anchorFlag = XdgPositioner::anchor_top_right; break;
case Edges::Right: anchorFlag = XdgPositioner::anchor_right; break;
case Edges::Bottom | Edges::Right: anchorFlag = XdgPositioner::anchor_bottom_right; break;
case Edges::Bottom: anchorFlag = XdgPositioner::anchor_bottom; break;
case Edges::Bottom | Edges::Left: anchorFlag = XdgPositioner::anchor_bottom_left; break;
case Edges::Left: anchorFlag = XdgPositioner::anchor_left; break;
case Edges::Top | Edges::Left: anchorFlag = XdgPositioner::anchor_top_left; break;
default: break;
}
positioner.set_anchor(anchorFlag);
XdgPositioner::gravity gravity = XdgPositioner::gravity_none;
switch (anchor->gravity()) {
case Edges::Top: gravity = XdgPositioner::gravity_top; break;
case Edges::Top | Edges::Right: gravity = XdgPositioner::gravity_top_right; break;
case Edges::Right: gravity = XdgPositioner::gravity_right; break;
case Edges::Bottom | Edges::Right: gravity = XdgPositioner::gravity_bottom_right; break;
case Edges::Bottom: gravity = XdgPositioner::gravity_bottom; break;
case Edges::Bottom | Edges::Left: gravity = XdgPositioner::gravity_bottom_left; break;
case Edges::Left: gravity = XdgPositioner::gravity_left; break;
case Edges::Top | Edges::Left: gravity = XdgPositioner::gravity_top_left; break;
default: break;
}
positioner.set_gravity(gravity);
auto geometry = waylandWindow->geometry();
positioner.set_size(geometry.width(), geometry.height());
// Note: this needs to be set for the initial position as well but no compositor
// supports it enough to test
positioner.set_reactive();
xdg_popup_reposition(popupRole, positioner.object(), 0);
positioner.destroy();
} else {
WaylandPopupPositioner::setFlags(anchor, window);
}
}
// Should be false but nobody supports set_reactive.
// This just tries its best when something like a bar gets resized.
bool WaylandPopupPositioner::shouldRepositionOnMove() const { return true; }
void WaylandPopupPositioner::setFlags(PopupAnchor* anchor, QWindow* window) {
// clang-format off
window->setProperty("_q_waylandPopupConstraintAdjustment", anchor->adjustment().toInt());
window->setProperty("_q_waylandPopupAnchorRect", anchor->rect().qrect());
window->setProperty("_q_waylandPopupAnchor", QVariant::fromValue(Edges::toQt(anchor->edges())));
window->setProperty("_q_waylandPopupGravity", QVariant::fromValue(Edges::toQt(anchor->gravity())));
// clang-format on
}
void installPopupPositioner() { PopupPositioner::setInstance(new WaylandPopupPositioner()); }