From 76ce3e6419f9b816359c0995ac7f1828e9291d7e Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@digia.com>
Date: Wed, 12 Dec 2012 17:16:54 +0100
Subject: Fix QWidget::setWindowOpacity() when called before show().
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Pass opacity from the QWidget to QWindow and to the platform
windows.

Task-number: QTBUG-28477
Change-Id: If5a85d9183bd1ca33dac2052936ecd1e6c0b5f6c
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
---
 src/plugins/platforms/cocoa/qcocoawindow.mm      | 5 +++++
 src/plugins/platforms/windows/qwindowswindow.cpp | 3 +++
 src/plugins/platforms/xcb/qxcbwindow.cpp         | 4 ++++
 3 files changed, 12 insertions(+)

(limited to 'src/plugins')

diff --git a/src/plugins/platforms/cocoa/qcocoawindow.mm b/src/plugins/platforms/cocoa/qcocoawindow.mm
index ffee8528f0..b545844a24 100644
--- a/src/plugins/platforms/cocoa/qcocoawindow.mm
+++ b/src/plugins/platforms/cocoa/qcocoawindow.mm
@@ -49,6 +49,7 @@
 #include <QtCore/qfileinfo.h>
 #include <QtCore/private/qcore_mac_p.h>
 #include <qwindow.h>
+#include <private/qwindow_p.h>
 #include <qpa/qwindowsysteminterface.h>
 #include <qpa/qplatformscreen.h>
 
@@ -649,6 +650,10 @@ void QCocoaWindow::recreateWindow(const QPlatformWindow *parentWindow)
         NSRect frame = NSMakeRect(rect.x(), rect.y(), rect.width(), rect.height());
         [m_contentView setFrame:frame];
     }
+
+    const qreal opacity = qt_window_private(window())->opacity;
+    if (!qFuzzyCompare(opacity, qreal(1.0)))
+        setOpacity(opacity);
 }
 
 NSWindow * QCocoaWindow::createNSWindow()
diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp
index 1f6253438f..2f2588bc4a 100644
--- a/src/plugins/platforms/windows/qwindowswindow.cpp
+++ b/src/plugins/platforms/windows/qwindowswindow.cpp
@@ -731,6 +731,9 @@ QWindowsWindow::QWindowsWindow(QWindow *aWindow, const WindowData &data) :
     if (QWindowsContext::instance()->systemInfo() & QWindowsContext::SI_SupportsTouch)
         QWindowsContext::user32dll.registerTouchWindow(m_data.hwnd, 0);
     setWindowState(aWindow->windowState());
+    const qreal opacity = qt_window_private(aWindow)->opacity;
+    if (!qFuzzyCompare(opacity, qreal(1.0)))
+        setOpacity(opacity);
 }
 
 QWindowsWindow::~QWindowsWindow()
diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp
index 0db4176607..23e59f0735 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindow.cpp
@@ -385,6 +385,10 @@ void QXcbWindow::create()
 #ifndef QT_NO_DRAGANDDROP
     connection()->drag()->dndEnable(this, true);
 #endif
+
+    const qreal opacity = qt_window_private(window())->opacity;
+    if (!qFuzzyCompare(opacity, qreal(1.0)))
+        setOpacity(opacity);
 }
 
 QXcbWindow::~QXcbWindow()
-- 
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