Wladimir J. van der Laan
13 years ago
5 changed files with 0 additions and 310 deletions
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/****************************************************************************
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** |
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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** |
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** Use, modification and distribution is allowed without limitation, |
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** warranty, liability or support of any kind. |
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** |
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****************************************************************************/ |
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#include "qtwin.h" |
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#include <QLibrary> |
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#include <QApplication> |
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#include <QWidget> |
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#include <QList> |
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#include <QPointer> |
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#ifdef Q_WS_WIN |
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#include <qt_windows.h> |
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// Blur behind data structures
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#define DWM_BB_ENABLE 0x00000001 // fEnable has been specified
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#define DWM_BB_BLURREGION 0x00000002 // hRgnBlur has been specified
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#define DWM_BB_TRANSITIONONMAXIMIZED 0x00000004 // fTransitionOnMaximized has been specified
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#define WM_DWMCOMPOSITIONCHANGED 0x031E // Composition changed window message
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typedef struct _DWM_BLURBEHIND |
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{ |
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DWORD dwFlags; |
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BOOL fEnable; |
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HRGN hRgnBlur; |
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BOOL fTransitionOnMaximized; |
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} DWM_BLURBEHIND, *PDWM_BLURBEHIND; |
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typedef struct _MARGINS |
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{ |
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int cxLeftWidth; |
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int cxRightWidth; |
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int cyTopHeight; |
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int cyBottomHeight; |
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} MARGINS, *PMARGINS; |
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typedef HRESULT (WINAPI *PtrDwmIsCompositionEnabled)(BOOL* pfEnabled); |
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typedef HRESULT (WINAPI *PtrDwmExtendFrameIntoClientArea)(HWND hWnd, const MARGINS* pMarInset); |
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typedef HRESULT (WINAPI *PtrDwmEnableBlurBehindWindow)(HWND hWnd, const DWM_BLURBEHIND* pBlurBehind); |
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typedef HRESULT (WINAPI *PtrDwmGetColorizationColor)(DWORD *pcrColorization, BOOL *pfOpaqueBlend); |
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static PtrDwmIsCompositionEnabled pDwmIsCompositionEnabled= 0; |
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static PtrDwmEnableBlurBehindWindow pDwmEnableBlurBehindWindow = 0; |
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static PtrDwmExtendFrameIntoClientArea pDwmExtendFrameIntoClientArea = 0; |
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static PtrDwmGetColorizationColor pDwmGetColorizationColor = 0; |
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/*
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* Internal helper class that notifies windows if the |
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* DWM compositing state changes and updates the widget |
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* flags correspondingly. |
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*/ |
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class WindowNotifier : public QWidget |
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{ |
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public: |
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WindowNotifier() { winId(); } |
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void addWidget(QWidget *widget) { widgets.append(widget); } |
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void removeWidget(QWidget *widget) { widgets.removeAll(widget); } |
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bool winEvent(MSG *message, long *result); |
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private: |
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QWidgetList widgets; |
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}; |
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static bool resolveLibs() |
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{ |
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if (!pDwmIsCompositionEnabled) { |
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QLibrary dwmLib(QString::fromAscii("dwmapi")); |
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pDwmIsCompositionEnabled =(PtrDwmIsCompositionEnabled)dwmLib.resolve("DwmIsCompositionEnabled"); |
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pDwmExtendFrameIntoClientArea = (PtrDwmExtendFrameIntoClientArea)dwmLib.resolve("DwmExtendFrameIntoClientArea"); |
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pDwmEnableBlurBehindWindow = (PtrDwmEnableBlurBehindWindow)dwmLib.resolve("DwmEnableBlurBehindWindow"); |
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pDwmGetColorizationColor = (PtrDwmGetColorizationColor)dwmLib.resolve("DwmGetColorizationColor"); |
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} |
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return pDwmIsCompositionEnabled != 0; |
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} |
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#endif |
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/*!
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* Chekcs and returns true if Windows DWM composition |
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* is currently enabled on the system. |
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* |
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* To get live notification on the availability of |
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* this feature, you will currently have to |
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* reimplement winEvent() on your widget and listen |
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* for the WM_DWMCOMPOSITIONCHANGED event to occur. |
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* |
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*/ |
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bool QtWin::isCompositionEnabled() |
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{ |
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#ifdef Q_WS_WIN |
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if (resolveLibs()) { |
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HRESULT hr = S_OK; |
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BOOL isEnabled = false; |
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hr = pDwmIsCompositionEnabled(&isEnabled); |
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if (SUCCEEDED(hr)) |
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return isEnabled; |
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} |
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#endif |
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return false; |
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} |
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/*!
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* Enables Blur behind on a Widget. |
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* |
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* \a enable tells if the blur should be enabled or not |
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*/ |
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bool QtWin::enableBlurBehindWindow(QWidget *widget, bool enable) |
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{ |
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Q_ASSERT(widget); |
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bool result = false; |
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#ifdef Q_WS_WIN |
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if (resolveLibs()) { |
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DWM_BLURBEHIND bb = {0}; |
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HRESULT hr = S_OK; |
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bb.fEnable = enable; |
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bb.dwFlags = DWM_BB_ENABLE; |
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bb.hRgnBlur = NULL; |
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widget->setAttribute(Qt::WA_TranslucentBackground, enable); |
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widget->setAttribute(Qt::WA_NoSystemBackground, enable); |
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hr = pDwmEnableBlurBehindWindow(widget->winId(), &bb); |
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if (SUCCEEDED(hr)) { |
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result = true; |
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windowNotifier()->addWidget(widget); |
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} |
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} |
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#endif |
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return result; |
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} |
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/*!
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* ExtendFrameIntoClientArea. |
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* |
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* This controls the rendering of the frame inside the window. |
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* Note that passing margins of -1 (the default value) will completely |
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* remove the frame from the window. |
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* |
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* \note you should not call enableBlurBehindWindow before calling |
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* this functions |
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* |
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* \a enable tells if the blur should be enabled or not |
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*/ |
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bool QtWin::extendFrameIntoClientArea(QWidget *widget, int left, int top, int right, int bottom) |
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{ |
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Q_ASSERT(widget); |
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Q_UNUSED(left); |
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Q_UNUSED(top); |
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Q_UNUSED(right); |
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Q_UNUSED(bottom); |
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bool result = false; |
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#ifdef Q_WS_WIN |
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if (resolveLibs()) { |
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QLibrary dwmLib(QString::fromAscii("dwmapi")); |
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HRESULT hr = S_OK; |
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MARGINS m = {left, top, right, bottom}; |
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hr = pDwmExtendFrameIntoClientArea(widget->winId(), &m); |
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if (SUCCEEDED(hr)) { |
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result = true; |
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windowNotifier()->addWidget(widget); |
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} |
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widget->setAttribute(Qt::WA_TranslucentBackground, result); |
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} |
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#endif |
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return result; |
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} |
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/*!
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* Returns the current colorizationColor for the window. |
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* |
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* \a enable tells if the blur should be enabled or not |
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*/ |
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QColor QtWin::colorizatinColor() |
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{ |
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QColor resultColor = QApplication::palette().window().color(); |
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#ifdef Q_WS_WIN |
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if (resolveLibs()) { |
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DWORD color = 0; |
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BOOL opaque = FALSE; |
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QLibrary dwmLib(QString::fromAscii("dwmapi")); |
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HRESULT hr = S_OK; |
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hr = pDwmGetColorizationColor(&color, &opaque); |
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if (SUCCEEDED(hr)) |
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resultColor = QColor(color); |
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} |
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#endif |
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return resultColor; |
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} |
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#ifdef Q_WS_WIN |
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WindowNotifier *QtWin::windowNotifier() |
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{ |
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static WindowNotifier *windowNotifierInstance = 0; |
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if (!windowNotifierInstance) |
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windowNotifierInstance = new WindowNotifier; |
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return windowNotifierInstance; |
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} |
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/* Notify all enabled windows that the DWM state changed */ |
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bool WindowNotifier::winEvent(MSG *message, long *result) |
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{ |
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if (message && message->message == WM_DWMCOMPOSITIONCHANGED) { |
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bool compositionEnabled = QtWin::isCompositionEnabled(); |
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foreach(QWidget * widget, widgets) { |
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if (widget) { |
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widget->setAttribute(Qt::WA_NoSystemBackground, compositionEnabled); |
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} |
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widget->update(); |
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} |
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} |
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return QWidget::winEvent(message, result); |
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} |
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#endif |
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@ -1,37 +0,0 @@
@@ -1,37 +0,0 @@
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/****************************************************************************
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** |
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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** |
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** Use, modification and distribution is allowed without limitation, |
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** warranty, liability or support of any kind. |
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** |
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****************************************************************************/ |
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#ifndef QTWIN_H |
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#define QTWIN_H |
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#include <QColor> |
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#include <QWidget> |
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/**
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* This is a helper class for using the Desktop Window Manager |
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* functionality on Windows 7 and Windows Vista. On other platforms |
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* these functions will simply not do anything. |
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*/ |
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class WindowNotifier; |
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class QtWin |
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{ |
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public: |
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static bool enableBlurBehindWindow(QWidget *widget, bool enable = true); |
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static bool extendFrameIntoClientArea(QWidget *widget, |
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int left = -1, int top = -1, |
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int right = -1, int bottom = -1); |
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static bool isCompositionEnabled(); |
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static QColor colorizatinColor(); |
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private: |
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static WindowNotifier *windowNotifier(); |
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}; |
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#endif // QTWIN_H
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