diff options
author | Liang Qi <liang.qi@qt.io> | 2019-05-15 07:11:41 +0200 |
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committer | Liang Qi <liang.qi@qt.io> | 2019-05-15 07:11:41 +0200 |
commit | c0359bd3c3a098ace9d2fa7ee91c33b24a8d9477 (patch) | |
tree | 9bcae3bff2ccef2b020c7a9ef25b3643e9ae556f /src/plugins/platforms/windows/qwindowscontext.cpp | |
parent | 68eea0196ebf30617e7d837ac5f61aaeeb814692 (diff) | |
parent | 1e5deb06416b6efc33a2009d9678fd8f743c5ce7 (diff) |
Merge remote-tracking branch 'origin/5.13' into dev
Conflicts:
src/corelib/global/qfloat16.cpp
src/corelib/global/qfloat16.h
src/plugins/platforms/windows/qwindowswindow.cpp
Change-Id: I0938aaa6a9771f55e48c95ed29f6f5291431b947
Diffstat (limited to 'src/plugins/platforms/windows/qwindowscontext.cpp')
-rw-r--r-- | src/plugins/platforms/windows/qwindowscontext.cpp | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/src/plugins/platforms/windows/qwindowscontext.cpp b/src/plugins/platforms/windows/qwindowscontext.cpp index 9ab9c2708b..320b5b1a41 100644 --- a/src/plugins/platforms/windows/qwindowscontext.cpp +++ b/src/plugins/platforms/windows/qwindowscontext.cpp @@ -210,6 +210,7 @@ void QWindowsUser32DLL::init() if (QOperatingSystemVersion::current() >= QOperatingSystemVersion(QOperatingSystemVersion::Windows, 10, 0, 14393)) { + adjustWindowRectExForDpi = (AdjustWindowRectExForDpi)library.resolve("AdjustWindowRectExForDpi"); enableNonClientDpiScaling = (EnableNonClientDpiScaling)library.resolve("EnableNonClientDpiScaling"); getWindowDpiAwarenessContext = (GetWindowDpiAwarenessContext)library.resolve("GetWindowDpiAwarenessContext"); getAwarenessFromDpiAwarenessContext = (GetAwarenessFromDpiAwarenessContext)library.resolve("GetAwarenessFromDpiAwarenessContext"); @@ -977,7 +978,7 @@ static inline bool resizeOnDpiChanged(const QWindow *w) return result; } -static bool shouldHaveNonClientDpiScaling(const QWindow *window) +bool QWindowsContext::shouldHaveNonClientDpiScaling(const QWindow *window) { return QOperatingSystemVersion::current() >= QOperatingSystemVersion::Windows10 && window->isTopLevel() @@ -1321,15 +1322,24 @@ bool QWindowsContext::windowsProc(HWND hwnd, UINT message, #endif } break; case QtWindows::DpiChangedEvent: { - if (!resizeOnDpiChanged(platformWindow->window())) - return false; - platformWindow->setFlag(QWindowsWindow::WithinDpiChanged); - const RECT *prcNewWindow = reinterpret_cast<RECT *>(lParam); - SetWindowPos(hwnd, nullptr, prcNewWindow->left, prcNewWindow->top, - prcNewWindow->right - prcNewWindow->left, - prcNewWindow->bottom - prcNewWindow->top, SWP_NOZORDER | SWP_NOACTIVATE); - platformWindow->clearFlag(QWindowsWindow::WithinDpiChanged); - return true; + // Try to apply the suggested size first and then notify ScreenChanged + // so that the resize event sent from QGuiApplication incorporates it + // WM_DPICHANGED is sent with a size that avoids resize loops (by + // snapping back to the previous screen, see QTBUG-65580). + const bool doResize = resizeOnDpiChanged(platformWindow->window()); + if (doResize) { + platformWindow->setFlag(QWindowsWindow::WithinDpiChanged); + platformWindow->updateFullFrameMargins(); + const auto prcNewWindow = reinterpret_cast<RECT *>(lParam); + qCDebug(lcQpaWindows) << __FUNCTION__ << "WM_DPICHANGED" + << platformWindow->window() << *prcNewWindow; + SetWindowPos(hwnd, nullptr, prcNewWindow->left, prcNewWindow->top, + prcNewWindow->right - prcNewWindow->left, + prcNewWindow->bottom - prcNewWindow->top, SWP_NOZORDER | SWP_NOACTIVATE); + platformWindow->clearFlag(QWindowsWindow::WithinDpiChanged); + } + platformWindow->checkForScreenChanged(QWindowsWindow::FromDpiChange); + return doResize; } #if QT_CONFIG(sessionmanager) case QtWindows::QueryEndSessionApplicationEvent: { @@ -1587,6 +1597,7 @@ extern "C" LRESULT QT_WIN_CALLBACK qWindowsWndProc(HWND hwnd, UINT message, WPAR marginsFromRects(ncCalcSizeFrame, rectFromNcCalcSize(message, wParam, lParam, 0)); if (margins.left() >= 0) { if (platformWindow) { + qCDebug(lcQpaWindows) << __FUNCTION__ << "WM_NCCALCSIZE for" << hwnd << margins; platformWindow->setFullFrameMargins(margins); } else { const QSharedPointer<QWindowCreationContext> ctx = QWindowsContext::instance()->windowCreationContext(); |