pull/2/merge
Wladimir J. van der Laan
13 years ago
parent
1837644c4a
commit
83312d7c6c
@ -1,222 +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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#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 @@
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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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