From f2a61f2ce2fa81acb526965d55e5f22d47673b2a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?B=C5=82a=C5=BCej=20Szczygie=C5=82?= Date: Mon, 2 Dec 2019 18:17:35 +0100 Subject: xcb: Propagate size hints when window changes its scaling factor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Properly scale size hints to the new scaling factor. Fixes: QTBUG-80476 Change-Id: I1081c9b01560f7e434f0f1de0199ef3d3cae787c Reviewed-by: Tor Arne Vestbø Reviewed-by: Friedemann Kleint Reviewed-by: Morten Johan Sørvig --- src/plugins/platforms/xcb/qxcbwindow.cpp | 5 +++++ src/plugins/platforms/xcb/qxcbwindow.h | 2 ++ 2 files changed, 7 insertions(+) (limited to 'src/plugins/platforms') diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp index 97da420798..cfe048d5c4 100644 --- a/src/plugins/platforms/xcb/qxcbwindow.cpp +++ b/src/plugins/platforms/xcb/qxcbwindow.cpp @@ -1398,6 +1398,8 @@ void QXcbWindow::propagateSizeHints() } xcb_icccm_set_wm_normal_hints(xcb_connection(), m_window, &hints); + + m_sizeHintsScaleFactor = QHighDpiScaling::scaleAndOrigin(screen()).factor; } void QXcbWindow::requestActivateWindow() @@ -1789,6 +1791,9 @@ void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t * // will make the comparison later. QWindowSystemInterface::handleWindowScreenChanged(window(), newScreen->screen()); + if (!qFuzzyCompare(QHighDpiScaling::scaleAndOrigin(newScreen).factor, m_sizeHintsScaleFactor)) + propagateSizeHints(); + // Send the synthetic expose event on resize only when the window is shrinked, // because the "XCB_GRAVITY_NORTH_WEST" flag doesn't send it automatically. if (!m_oldWindowSize.isEmpty() diff --git a/src/plugins/platforms/xcb/qxcbwindow.h b/src/plugins/platforms/xcb/qxcbwindow.h index 5de5974ca7..a808437c5a 100644 --- a/src/plugins/platforms/xcb/qxcbwindow.h +++ b/src/plugins/platforms/xcb/qxcbwindow.h @@ -280,6 +280,8 @@ protected: QXcbSyncWindowRequest *m_pendingSyncRequest = nullptr; int m_swapInterval = -1; + + qreal m_sizeHintsScaleFactor = 1.0; }; class QXcbForeignWindow : public QXcbWindow -- cgit v1.2.3