From 778e2b3bf5c29f2bab13e79400280fe86c6d2226 Mon Sep 17 00:00:00 2001 From: jian liang Date: Sat, 2 Jun 2012 00:35:47 +0800 Subject: Implement WindowTransparentForInput flag in Windows platform. set WS_EX_LAYERED | WS_EX_TRANSPARENT style if the window has WindowTransparentForInput flag. Change-Id: I6b0dcf35abb5fc63c800439e9b81ace1070dcad4 Reviewed-by: Friedemann Kleint --- src/plugins/platforms/windows/qwindowswindow.cpp | 70 ++++++++++++++---------- src/plugins/platforms/windows/qwindowswindow.h | 1 - 2 files changed, 41 insertions(+), 30 deletions(-) (limited to 'src/plugins/platforms') diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp index c8e8e8b124..b96d61561c 100644 --- a/src/plugins/platforms/windows/qwindowswindow.cpp +++ b/src/plugins/platforms/windows/qwindowswindow.cpp @@ -205,6 +205,32 @@ static bool shouldShowMaximizeButton(Qt::WindowFlags flags) return flags & Qt::WindowMaximizeButtonHint; } +static void setWindowOpacity(HWND hwnd, Qt::WindowFlags flags, qreal level) +{ +#ifdef Q_OS_WINCE // maybe needs revisit WS_EX_LAYERED + Q_UNUSED(hwnd); + Q_UNUSED(flags); + Q_UNUSED(level); +#else + const long wl = GetWindowLong(hwnd, GWL_EXSTYLE); + const bool isOpaque = level == 1.0 && !(flags & Qt::WindowTransparentForInput); + + if (isOpaque) { + if (wl & WS_EX_LAYERED) + SetWindowLong(hwnd, GWL_EXSTYLE, wl & ~WS_EX_LAYERED); + } else { + if ((wl & WS_EX_LAYERED) == 0) + SetWindowLong(hwnd, GWL_EXSTYLE, wl | WS_EX_LAYERED); + if (flags & Qt::FramelessWindowHint) { + BLENDFUNCTION blend = {AC_SRC_OVER, 0, (int)(255.0 * level), AC_SRC_ALPHA}; + QWindowsContext::user32dll.updateLayeredWindow(hwnd, NULL, NULL, NULL, NULL, NULL, 0, &blend, ULW_ALPHA); + } else { + QWindowsContext::user32dll.setLayeredWindowAttributes(hwnd, 0, (int)(level * 255), LWA_ALPHA); + } + } +#endif // !Q_OS_WINCE +} + /*! \class WindowCreationData \brief Window creation code. @@ -246,7 +272,7 @@ struct WindowCreationData void fromWindow(const QWindow *w, const Qt::WindowFlags flags, unsigned creationFlags = 0); inline WindowData create(const QWindow *w, const QRect &geometry, QString title) const; inline void applyWindowFlags(HWND hwnd) const; - void initialize(HWND h, bool frameChange) const; + void initialize(HWND h, bool frameChange, qreal opacityLevel) const; Qt::WindowFlags flags; HWND parentHandle; @@ -375,6 +401,13 @@ void WindowCreationData::fromWindow(const QWindow *w, const Qt::WindowFlags flag } else { exStyle |= WS_EX_TOOLWINDOW; } + +#ifndef Q_OS_WINCE + // make mouse events fall through this window + // NOTE: WS_EX_TRANSPARENT flag can make mouse inputs fall through a layered window + if (flagsIn & Qt::WindowTransparentForInput) + exStyle |= WS_EX_LAYERED | WS_EX_TRANSPARENT; +#endif } } } @@ -459,7 +492,7 @@ void WindowCreationData::applyWindowFlags(HWND hwnd) const << debugWinExStyle(newExStyle); } -void WindowCreationData::initialize(HWND hwnd, bool frameChange) const +void WindowCreationData::initialize(HWND hwnd, bool frameChange, qreal opacityLevel) const { if (desktop || !hwnd) return; @@ -482,6 +515,8 @@ void WindowCreationData::initialize(HWND hwnd, bool frameChange) const else EnableMenuItem(systemMenu, SC_CLOSE, MF_BYCOMMAND|MF_GRAYED); } + + setWindowOpacity(hwnd, flags, opacityLevel); } else { // child. SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0, swpFlags); } @@ -746,7 +781,7 @@ QWindowsWindow::WindowData WindowCreationData creationData; creationData.fromWindow(w, parameters.flags); WindowData result = creationData.create(w, parameters.geometry, title); - creationData.initialize(result.hwnd, false); + creationData.initialize(result.hwnd, false, 1); return result; } @@ -1090,7 +1125,8 @@ QWindowsWindow::WindowData QWindowsWindow::setWindowFlags_sys(Qt::WindowFlags wt WindowCreationData creationData; creationData.fromWindow(window(), wt, flags); creationData.applyWindowFlags(m_data.hwnd); - creationData.initialize(m_data.hwnd, true); + creationData.initialize(m_data.hwnd, true, m_opacity); + WindowData result = m_data; result.flags = creationData.flags; setFlag(FrameDirty); @@ -1304,32 +1340,8 @@ void QWindowsWindow::setOpacity(qreal level) if (m_opacity != level) { m_opacity = level; if (m_data.hwnd) - setOpacity_sys(level); - } -} - -void QWindowsWindow::setOpacity_sys(qreal level) const -{ -#ifdef Q_OS_WINCE // maybe needs revisit WS_EX_LAYERED - Q_UNUSED(level); -#else - const long wl = GetWindowLong(m_data.hwnd, GWL_EXSTYLE); - const bool isOpaque = level == 1.0; - - if (isOpaque) { - if (wl & WS_EX_LAYERED) - SetWindowLong(m_data.hwnd, GWL_EXSTYLE, wl & ~WS_EX_LAYERED); - } else { - if ((wl & WS_EX_LAYERED) == 0) - SetWindowLong(m_data.hwnd, GWL_EXSTYLE, wl | WS_EX_LAYERED); - if (m_data.flags & Qt::FramelessWindowHint) { - BLENDFUNCTION blend = {AC_SRC_OVER, 0, (int)(255.0 * level), AC_SRC_ALPHA}; - QWindowsContext::user32dll.updateLayeredWindow(m_data.hwnd, NULL, NULL, NULL, NULL, NULL, 0, &blend, ULW_ALPHA); - } else { - QWindowsContext::user32dll.setLayeredWindowAttributes(m_data.hwnd, 0, (int)(level * 255), LWA_ALPHA); - } + setWindowOpacity(m_data.hwnd, m_data.flags, level); } -#endif // !Q_OS_WINCE } void QWindowsWindow::requestActivateWindow() diff --git a/src/plugins/platforms/windows/qwindowswindow.h b/src/plugins/platforms/windows/qwindowswindow.h index f227c85002..ee45be18cd 100644 --- a/src/plugins/platforms/windows/qwindowswindow.h +++ b/src/plugins/platforms/windows/qwindowswindow.h @@ -239,7 +239,6 @@ private: inline WindowData setWindowFlags_sys(Qt::WindowFlags wt, unsigned flags = 0) const; inline void setWindowState_sys(Qt::WindowState newState); inline void setParent_sys(const QPlatformWindow *parent) const; - inline void setOpacity_sys(qreal level) const; inline void setMouseGrabEnabled_sys(bool grab); void destroyWindow(); void registerDropSite(); -- cgit v1.2.3