QVistaHelper Class Reference

#include <qwizard_win_p.h>

Inheritance diagram for QVistaHelper:

Public Types
enum	TitleBarChangeType { NormalTitleBar, ExtendedTitleBar }
enum	VistaState { VistaAero, VistaBasic, Classic, Dirty }

Public Functions
QVistaBackButton *	backButton () const
QColor	basicWindowFrameColor ()
void	disconnectBackButton ()
bool	handleWinEvent (MSG *message, long *result)
void	hideBackButton ()
void	mouseEvent (QEvent *event)
void	paintEvent (QPaintEvent *event)
	QVistaHelper (QWizard *wizard)
void	resizeEvent (QResizeEvent *event)
bool	setDWMTitleBar (TitleBarChangeType type)
void	setTitleBarIconAndCaptionVisible (bool visible)
void	setWindowPosHack ()
	~QVistaHelper ()
Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...
const QObjectList &	children () const
	Returns a list of child objects. More...
bool	connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
bool	disconnect (const char *signal=0, const QObject *receiver=0, const char *member=0)
bool	disconnect (const QObject *receiver, const char *member=0)
void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...
void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...
QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...
virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...
template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...
template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...
template<typename T >
QList< T >	findChildren (const QRegExp &re) const
bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...
void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...
bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...
void	killTimer (int id)
	Kills the timer with timer identifier, id. More...
virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...
void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...
QString	objectName () const
QObject *	parent () const
	Returns a pointer to the parent object. More...
QVariant	property (const char *name) const
	Returns the value of the object's name property. More...
Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...
void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...
void	setObjectName (const QString &name)
void	setParent (QObject *)
	Makes the object a child of parent. More...
bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...
void	setUserData (uint id, QObjectUserData *data)
bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...
int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...
QThread *	thread () const
	Returns the thread in which the object lives. More...
QObjectUserData *	userData (uint id) const
virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Static Public Functions
static int	titleBarSize ()
static int	topOffset ()
static int	topPadding ()
static VistaState	vistaState ()
Static Public Functions inherited from QObject
static bool	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...
static bool	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
static bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
	Disconnects signal in object sender from method in object receiver. More...
static bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
static uint	registerUserData ()
static QString	tr (const char *sourceText, const char *comment=0, int n=-1)
static QString	trUtf8 (const char *sourceText, const char *comment=0, int n=-1)

Private Types
enum	Changes { resizeTop, movePosition, noChange }

Private Functions
void	collapseTopFrameStrut ()
void	drawTitleBar (QPainter *painter)
bool	drawTitleText (QPainter *painter, const QString &text, const QRect &rect, HDC hdc)
bool	eventFilter (QObject *obj, QEvent *event)
	Filters events if this object has been installed as an event filter for the watched object. More...
int	leftMargin ()
void	mouseMoveEvent (QMouseEvent *event)
void	mousePressEvent (QMouseEvent *event)
void	mouseReleaseEvent (QMouseEvent *event)
bool	resolveSymbols ()
void	setMouseCursor (QPoint pos)
int	titleOffset ()
bool	winEvent (MSG *message, long *result)

Static Private Functions
static int	backButtonSize ()
static int	captionSize ()
static bool	drawBlackRect (const QRect &rect, HDC hdc)
static int	frameSize ()
static HFONT	getCaptionFont (HANDLE hTheme)
static int	glowSize ()
static int	iconSize ()
static bool	isCompositionEnabled ()
static bool	isThemeActive ()

Properties
QVistaBackButton *	backButton_
enum QVistaHelper::Changes	change
int	iconSpacing
bool	pressed
QPoint	pressedPos
QRect	rtTitle
QRect	rtTop
int	textSpacing
int	titleBarOffset
QWizard *	wizard

Static Private Attributes
static VistaState	cachedVistaState = QVistaHelper::Dirty
static int	instanceCount = 0
static bool	is_vista = false

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...
Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...
Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...
Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...
virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...
virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...
virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...
	QObject (QObjectPrivate &dd, QObject *parent=0)
int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...
int	senderSignalIndex () const
virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...
Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr
Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject
Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()
T *	qobject_cast (QObject *object)
	QObjectList
void *	qt_find_obj_child (QObject *parent, const char *type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 84 of file qwizard_win_p.h.

Enumerations

Changes

enum QVistaHelper::Changes

private

Enumerator
resizeTop
movePosition
noChange

Definition at line 139 of file qwizard_win_p.h.

{ resizeTop, movePosition, noChange } change;

TitleBarChangeType

enum QVistaHelper::TitleBarChangeType

Enumerator
NormalTitleBar
ExtendedTitleBar

Definition at line 89 of file qwizard_win_p.h.

{ NormalTitleBar, ExtendedTitleBar };

VistaState

enum QVistaHelper::VistaState

Enumerator
VistaAero
VistaBasic
Classic
Dirty

Definition at line 101 of file qwizard_win_p.h.

{ VistaAero, VistaBasic, Classic, Dirty };

Constructors and Destructors

QVistaHelper()

QVistaHelper::QVistaHelper

(

QWizard *

wizard

)

Definition at line 245 of file qwizard_win.cpp.

    : QObject(wizard)
    , pressed(false)
    , wizard(wizard)
    , backButton_(0)
{
    is_vista = QSysInfo::WindowsVersion >= QSysInfo::WV_VISTA && resolveSymbols();
    if (instanceCount++ == 0)
        cachedVistaState = Dirty;
    if (is_vista)
        backButton_ = new QVistaBackButton(wizard);

    // Handle diff between Windows 7 and Vista
    iconSpacing = QStyleHelper::dpiScaled(7);
    textSpacing = QSysInfo::WindowsVersion >= QSysInfo::WV_WINDOWS7 ?
                  iconSpacing : QStyleHelper::dpiScaled(20);
}

~QVistaHelper()

QVistaHelper::~QVistaHelper

(

)

Definition at line 263 of file qwizard_win.cpp.

{
    --instanceCount;
}

Functions

backButton()

QVistaBackButton* QVistaHelper::backButton ( ) const

inline

Definition at line 96 of file qwizard_win_p.h.

{ return backButton_; }

backButtonSize()

static int QVistaHelper::backButtonSize ( )

inlinestaticprivate

Definition at line 118 of file qwizard_win_p.h.

{ return int(QStyleHelper::dpiScaled(30)); }

basicWindowFrameColor()

QColor QVistaHelper::basicWindowFrameColor

(

)

Definition at line 300 of file qwizard_win.cpp.

{
    DWORD rgb;
    HANDLE hTheme = pOpenThemeData(QApplication::desktop()->winId(), L"WINDOW");
    pGetThemeColor(
        hTheme, WIZ_WP_CAPTION, WIZ_CS_ACTIVE,
        wizard->isActiveWindow() ? WIZ_TMT_FILLCOLORHINT : WIZ_TMT_BORDERCOLORHINT,
        &rgb);
    BYTE r = GetRValue(rgb);
    BYTE g = GetGValue(rgb);
    BYTE b = GetBValue(rgb);
    return QColor(r, g, b);
}

captionSize()

int QVistaHelper::captionSize ( )

staticprivate

Definition at line 762 of file qwizard_win.cpp.

Referenced by resizeEvent().

{
    return GetSystemMetrics(SM_CYCAPTION);
}

collapseTopFrameStrut()

void QVistaHelper::collapseTopFrameStrut ( )

private

Definition at line 483 of file qwizard_win.cpp.

Referenced by handleWinEvent().

{
    QTLWExtra *top = ((QHackWidget *)wizard)->d_func()->topData();
    int x1, y1, x2, y2;
    top->frameStrut.getCoords(&x1, &y1, &x2, &y2);
    top->frameStrut.setCoords(x1, 0, x2, y2);
}

disconnectBackButton()

void QVistaHelper::disconnectBackButton

(

)

Definition at line 294 of file qwizard_win.cpp.

{
    if (backButton_) // Leave QStyleSheetStyle's connections on destroyed() intact.
        backButton_->disconnect(SIGNAL(clicked()));
}

drawBlackRect()

bool QVistaHelper::drawBlackRect ( const QRect &  rect, HDC  hdc  )

staticprivate

Definition at line 711 of file qwizard_win.cpp.

Referenced by drawTitleBar().

{
    bool value = false;
    if (vistaState() == VistaAero) {
        // Set up a memory DC and bitmap that we'll draw into
        HDC dcMem;
        HBITMAP bmp;
        BITMAPINFO dib = {{0}};
        dcMem = CreateCompatibleDC(hdc);

        dib.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
        dib.bmiHeader.biWidth = rect.width();
        dib.bmiHeader.biHeight = -rect.height();
        dib.bmiHeader.biPlanes = 1;
        dib.bmiHeader.biBitCount = 32;
        dib.bmiHeader.biCompression = BI_RGB;
 
        bmp = CreateDIBSection(hdc, &dib, DIB_RGB_COLORS, NULL, NULL, 0);
        HBITMAP hOldBmp = (HBITMAP)SelectObject(dcMem, (HGDIOBJ) bmp);

        BitBlt(hdc, rect.left(), rect.top(), rect.width(), rect.height(), dcMem, 0, 0, SRCCOPY);
        SelectObject(dcMem, (HGDIOBJ) hOldBmp);

        DeleteObject(bmp);
        DeleteDC(dcMem);
    }
    return value;
}

drawTitleBar()

void QVistaHelper::drawTitleBar ( QPainter *  painter )

private

Definition at line 329 of file qwizard_win.cpp.

Referenced by paintEvent().

{
    HDC hdc = painter->paintEngine()->getDC();

    if (vistaState() == VistaAero)
        drawBlackRect(QRect(0, 0, wizard->width(),
                            titleBarSize() + topOffset()), hdc);
    Q_ASSERT(backButton_);
    const int btnTop = backButton_->mapToParent(QPoint()).y();
    const int btnHeight = backButton_->size().height();
    const int verticalCenter = (btnTop + btnHeight / 2) - 1;

    const QString text = wizard->window()->windowTitle();
    const QFont font = QApplication::font("QWorkspaceTitleBar");
    const QFontMetrics fontMetrics(font);
    const QRect brect = fontMetrics.boundingRect(text);
    int textHeight = brect.height();
    int textWidth = brect.width();
    int glowOffset = 0;

    if (vistaState() == VistaAero) {
        textHeight += 2 * glowSize();
        textWidth += 2 * glowSize();
        glowOffset = glowSize();
    }

    const int titleLeft = (wizard->layoutDirection() == Qt::LeftToRight
                           ? titleOffset() - glowOffset
                           : wizard->width() - titleOffset() - textWidth + glowOffset);

    drawTitleText(
        painter, text,
        QRect(titleLeft, verticalCenter - textHeight / 2, textWidth, textHeight),
        hdc);

    if (!wizard->windowIcon().isNull()) {
        const int iconLeft = (wizard->layoutDirection() == Qt::LeftToRight
                              ? leftMargin()
                              : wizard->width() - leftMargin() - iconSize());

        QRect rect(iconLeft, verticalCenter - iconSize() / 2, iconSize(), iconSize());
        HICON hIcon = wizard->windowIcon().pixmap(iconSize()).toWinHICON();
        DrawIconEx(hdc, rect.left(), rect.top(), hIcon, 0, 0, 0, NULL, DI_NORMAL | DI_COMPAT);
        DestroyIcon(hIcon);
    }
}

drawTitleText()

bool QVistaHelper::drawTitleText ( QPainter *  painter, const QString &  text, const QRect &  rect, HDC  hdc  )

private

Definition at line 663 of file qwizard_win.cpp.

Referenced by drawTitleBar().

{
    bool value = false;
    if (vistaState() == VistaAero) {
        HANDLE hTheme = pOpenThemeData(QApplication::desktop()->winId(), L"WINDOW");
        if (!hTheme) return false;
        // Set up a memory DC and bitmap that we'll draw into
        HDC dcMem;
        HBITMAP bmp;
        BITMAPINFO dib = {{0}};
        dcMem = CreateCompatibleDC(hdc);

        dib.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
        dib.bmiHeader.biWidth = rect.width();
        dib.bmiHeader.biHeight = -rect.height();
        dib.bmiHeader.biPlanes = 1;
        dib.bmiHeader.biBitCount = 32;
        dib.bmiHeader.biCompression = BI_RGB;
 
        bmp = CreateDIBSection(hdc, &dib, DIB_RGB_COLORS, NULL, NULL, 0);

        // Set up the DC
        HFONT hCaptionFont = getCaptionFont(hTheme);
        HBITMAP hOldBmp = (HBITMAP)SelectObject(dcMem, (HGDIOBJ) bmp);
        HFONT hOldFont = (HFONT)SelectObject(dcMem, (HGDIOBJ) hCaptionFont);
 
        // Draw the text!
        WIZ_DTTOPTS dto = { sizeof(WIZ_DTTOPTS) };
        const UINT uFormat = WIZ_DT_SINGLELINE|WIZ_DT_CENTER|WIZ_DT_VCENTER|WIZ_DT_NOPREFIX;
        RECT rctext ={0,0, rect.width(), rect.height()};

        dto.dwFlags = WIZ_DTT_COMPOSITED|WIZ_DTT_GLOWSIZE;
        dto.iGlowSize = glowSize();
 
        pDrawThemeTextEx(hTheme, dcMem, 0, 0, (LPCWSTR)text.utf16(), -1, uFormat, &rctext, &dto );
        BitBlt(hdc, rect.left(), rect.top(), rect.width(), rect.height(), dcMem, 0, 0, SRCCOPY);
        SelectObject(dcMem, (HGDIOBJ) hOldBmp);
        SelectObject(dcMem, (HGDIOBJ) hOldFont);
        DeleteObject(bmp);
        DeleteObject(hCaptionFont);
        DeleteDC(dcMem);
        //ReleaseDC(hwnd, hdc);
    } else if (vistaState() == VistaBasic) {
        painter->drawText(rect, text);
    }
    return value;
}

eventFilter()

bool QVistaHelper::eventFilter ( QObject *  , QEvent *    )

privatevirtual

Filters events if this object has been installed as an event filter for the watched object.

In your reimplementation of this function, if you want to filter the event out, i.e. stop it being handled further, return true; otherwise return false.

Example:

class MainWindow : public QMainWindow
{
public:
    MainWindow();

protected:
    bool eventFilter(QObject *obj, QEvent *ev);

private:
    QTextEdit *textEdit;
};

MainWindow::MainWindow()
{
    textEdit = new QTextEdit;
    setCentralWidget(textEdit);

    textEdit->installEventFilter(this);
}

bool MainWindow::eventFilter(QObject *obj, QEvent *event)
{
    if (obj == textEdit) {
        if (event->type() == QEvent::KeyPress) {
            QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
            qDebug() << "Ate key press" << keyEvent->key();
            return true;
        } else {
            return false;
        }
    } else {
        // pass the event on to the parent class
        return QMainWindow::eventFilter(obj, event);
    }
}

Notice in the example above that unhandled events are passed to the base class's eventFilter() function, since the base class might have reimplemented eventFilter() for its own internal purposes.

Warning

If you delete the receiver object in this function, be sure to return true. Otherwise, Qt will forward the event to the deleted object and the program might crash.

See also

installEventFilter()

Reimplemented from QObject.

Definition at line 596 of file qwizard_win.cpp.

{
    if (obj != wizard)
        return QObject::eventFilter(obj, event);

    if (event->type() == QEvent::MouseMove) {
        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
        long result;
        MSG msg;
        msg.message = WM_NCHITTEST;
        msg.wParam  = 0;
        msg.lParam = MAKELPARAM(mouseEvent->globalX(), mouseEvent->globalY());
        msg.hwnd = wizard->winId();
        winEvent(&msg, &result);
        msg.wParam = result;
        msg.message = WM_NCMOUSEMOVE;
        winEvent(&msg, &result);
     } else if (event->type() == QEvent::MouseButtonPress) {
        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);

        if (mouseEvent->button() == Qt::LeftButton) {
            long result;
            MSG msg;
            msg.message = WM_NCHITTEST;
            msg.wParam  = 0;
            msg.lParam = MAKELPARAM(mouseEvent->globalX(), mouseEvent->globalY());
            msg.hwnd = wizard->winId();
            winEvent(&msg, &result);
            msg.wParam = result;
            msg.message = WM_NCLBUTTONDOWN;
            winEvent(&msg, &result);
        }
     } else if (event->type() == QEvent::MouseButtonRelease) {
        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);

        if (mouseEvent->button() == Qt::LeftButton) {
            long result;
            MSG msg;
            msg.message = WM_NCHITTEST;
            msg.wParam  = 0;
            msg.lParam = MAKELPARAM(mouseEvent->globalX(), mouseEvent->globalY());
            msg.hwnd = wizard->winId();
            winEvent(&msg, &result);
            msg.wParam = result;
            msg.message = WM_NCLBUTTONUP;
            winEvent(&msg, &result);
        }
     }

     return false;
}

frameSize()

int QVistaHelper::frameSize ( )

staticprivate

Definition at line 757 of file qwizard_win.cpp.

Referenced by resizeEvent().

{
    return getWindowBottomMargin();
}

getCaptionFont()

HFONT QVistaHelper::getCaptionFont ( HANDLE  hTheme )

staticprivate

Definition at line 648 of file qwizard_win.cpp.

Referenced by drawTitleText().

{
    LOGFONT lf = {0};

    if (!hTheme)
        pGetThemeSysFont(hTheme, WIZ_TMT_CAPTIONFONT, &lf);
    else
    {
        NONCLIENTMETRICS ncm = {sizeof(NONCLIENTMETRICS)};
        SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(NONCLIENTMETRICS), &ncm, false);
        lf = ncm.lfMessageFont;
    }
    return CreateFontIndirect(&lf);
}

glowSize()

static int QVistaHelper::glowSize ( )

inlinestaticprivate

Definition at line 120 of file qwizard_win_p.h.

Referenced by drawTitleBar(), and drawTitleText().

{ return 10; }

handleWinEvent()

bool QVistaHelper::handleWinEvent	(	MSG *	message,
		long *	result
	)

Definition at line 491 of file qwizard_win.cpp.

{
    if (message->message == WIZ_WM_THEMECHANGED || message->message == WIZ_WM_DWMCOMPOSITIONCHANGED)
        cachedVistaState = Dirty;

    bool status = false;
    if (wizard->wizardStyle() == QWizard::AeroStyle && vistaState() == VistaAero) {
        status = winEvent(message, result);
        if (message->message == WM_NCCALCSIZE) {
            if (status)
                collapseTopFrameStrut();
        } else if (message->message == WM_NCPAINT) {
            wizard->update();
        }
    }
    return status;
}

hideBackButton()

void QVistaHelper::hideBackButton ( )

inline

Definition at line 98 of file qwizard_win_p.h.

{ if (backButton_) backButton_->hide(); }

iconSize()

static int QVistaHelper::iconSize ( )

inlinestaticprivate

Definition at line 119 of file qwizard_win_p.h.

Referenced by drawTitleBar(), and titleOffset().

{ return 16; } // Standard Aero

isCompositionEnabled()

bool QVistaHelper::isCompositionEnabled ( )

staticprivate

Definition at line 268 of file qwizard_win.cpp.

Referenced by vistaState().

{
    bool value = is_vista;
    if (is_vista) {
        HRESULT hr;
        BOOL bEnabled;

        hr = pDwmIsCompositionEnabled(&bEnabled);
        value = (SUCCEEDED(hr) && bEnabled);
    }
    return value;
}

isThemeActive()

bool QVistaHelper::isThemeActive ( )

staticprivate

Definition at line 281 of file qwizard_win.cpp.

Referenced by vistaState().

{
    return is_vista && pIsThemeActive();
}

leftMargin()

int QVistaHelper::leftMargin ( )

inlineprivate

Definition at line 121 of file qwizard_win_p.h.

Referenced by drawTitleBar(), and titleOffset().

{ return backButton_->isVisible() ? backButtonSize() + iconSpacing : 0; }

mouseEvent()

void QVistaHelper::mouseEvent

(

QEvent *

event

)

Definition at line 443 of file qwizard_win.cpp.

Referenced by eventFilter().

{
    switch (event->type()) {
    case QEvent::MouseMove:
        mouseMoveEvent(static_cast<QMouseEvent *>(event));
        break;
    case QEvent::MouseButtonPress:
        mousePressEvent(static_cast<QMouseEvent *>(event));
        break;
    case QEvent::MouseButtonRelease:
        mouseReleaseEvent(static_cast<QMouseEvent *>(event));
        break;
    default:
        break;
    }
}

mouseMoveEvent()

void QVistaHelper::mouseMoveEvent ( QMouseEvent *  event )

private

Definition at line 526 of file qwizard_win.cpp.

Referenced by mouseEvent().

{
    if (wizard->windowState() & Qt::WindowMaximized) {
        event->ignore();
        return;
    }

    QRect rect = wizard->geometry();
    if (pressed) {
        switch (change) {
        case resizeTop:
            {
                const int dy = event->pos().y() - pressedPos.y();
                if ((dy > 0 && rect.height() > wizard->minimumHeight())
                    || (dy < 0 && rect.height() < wizard->maximumHeight()))
                    rect.setTop(rect.top() + dy);
            }
            break;
        case movePosition: {
            QPoint newPos = event->pos() - pressedPos;
            rect.moveLeft(rect.left() + newPos.x());
            rect.moveTop(rect.top() + newPos.y());
            break; }
        default:
            break;
        }
        wizard->setGeometry(rect);

    } else if (vistaState() == VistaAero) {
        setMouseCursor(event->pos());
    }
    event->ignore();
}

mousePressEvent()

void QVistaHelper::mousePressEvent ( QMouseEvent *  event )

private

Definition at line 560 of file qwizard_win.cpp.

Referenced by mouseEvent().

{
    change = noChange;

    if (event->button() != Qt::LeftButton || wizard->windowState() & Qt::WindowMaximized) {
        event->ignore();
        return;
    }

    if (rtTitle.contains(event->pos())) {
        change = movePosition;
    } else if (rtTop.contains(event->pos()))
        change = (vistaState() == VistaAero) ? resizeTop : movePosition;

    if (change != noChange) {
        if (vistaState() == VistaAero)
            setMouseCursor(event->pos());
        pressed = true;
        pressedPos = event->pos();
    } else {
        event->ignore();
    }
}

mouseReleaseEvent()

void QVistaHelper::mouseReleaseEvent ( QMouseEvent *  event )

private

Definition at line 584 of file qwizard_win.cpp.

Referenced by mouseEvent().

{
    change = noChange;
    if (pressed) {
        pressed = false;
        wizard->releaseMouse();
        if (vistaState() == VistaAero)
            setMouseCursor(event->pos());
    }
    event->ignore();
}

paintEvent()

void QVistaHelper::paintEvent

(

QPaintEvent *

event

)

Definition at line 519 of file qwizard_win.cpp.

{
    Q_UNUSED(event);
    QPainter painter(wizard);
    drawTitleBar(&painter);
}

resizeEvent()

void QVistaHelper::resizeEvent

(

QResizeEvent *

event

)

Definition at line 509 of file qwizard_win.cpp.

{
    Q_UNUSED(event);
    rtTop = QRect (0, 0, wizard->width(), frameSize());
    int height = captionSize() + topOffset();
    if (vistaState() == VistaBasic)
        height -= titleBarSize();
    rtTitle = QRect (0, frameSize(), wizard->width(), height);
}

resolveSymbols()

bool QVistaHelper::resolveSymbols ( )

private

Definition at line 767 of file qwizard_win.cpp.

Referenced by QVistaHelper().

{
    static bool tried = false;
    if (!tried) {
        QSystemLibrary dwmLib(L"dwmapi");
        pDwmIsCompositionEnabled =
            (PtrDwmIsCompositionEnabled)dwmLib.resolve("DwmIsCompositionEnabled");
        if (pDwmIsCompositionEnabled) {
            pDwmDefWindowProc = (PtrDwmDefWindowProc)dwmLib.resolve("DwmDefWindowProc");
            pDwmExtendFrameIntoClientArea =
                (PtrDwmExtendFrameIntoClientArea)dwmLib.resolve("DwmExtendFrameIntoClientArea");
        }
        QSystemLibrary themeLib(L"uxtheme");
        pIsAppThemed = (PtrIsAppThemed)themeLib.resolve("IsAppThemed");
        if (pIsAppThemed) {
            pDrawThemeBackground = (PtrDrawThemeBackground)themeLib.resolve("DrawThemeBackground");
            pGetThemePartSize = (PtrGetThemePartSize)themeLib.resolve("GetThemePartSize");
            pGetThemeColor = (PtrGetThemeColor)themeLib.resolve("GetThemeColor");
            pIsThemeActive = (PtrIsThemeActive)themeLib.resolve("IsThemeActive");
            pOpenThemeData = (PtrOpenThemeData)themeLib.resolve("OpenThemeData");
            pCloseThemeData = (PtrCloseThemeData)themeLib.resolve("CloseThemeData");
            pGetThemeSysFont = (PtrGetThemeSysFont)themeLib.resolve("GetThemeSysFont");
            pDrawThemeTextEx = (PtrDrawThemeTextEx)themeLib.resolve("DrawThemeTextEx");
            pSetWindowThemeAttribute = (PtrSetWindowThemeAttribute)themeLib.resolve("SetWindowThemeAttribute");
        }
        tried = true;
    }

    return (
        pDwmIsCompositionEnabled != 0
        && pDwmDefWindowProc != 0
        && pDwmExtendFrameIntoClientArea != 0
        && pIsAppThemed != 0
        && pDrawThemeBackground != 0
        && pGetThemePartSize != 0
        && pGetThemeColor != 0
        && pIsThemeActive != 0
        && pOpenThemeData != 0
        && pCloseThemeData != 0
        && pGetThemeSysFont != 0
        && pDrawThemeTextEx != 0
        && pSetWindowThemeAttribute != 0
        );
}

setDWMTitleBar()

bool QVistaHelper::setDWMTitleBar

(

TitleBarChangeType

type

)

Definition at line 314 of file qwizard_win.cpp.

{
    bool value = false;
    if (vistaState() == VistaAero) {
        WIZ_MARGINS mar = {0};
        if (type == NormalTitleBar)
            mar.cyTopHeight = 0;
        else
            mar.cyTopHeight = titleBarSize() + topOffset();
        HRESULT hr = pDwmExtendFrameIntoClientArea(wizard->winId(), &mar);
        value = SUCCEEDED(hr);
    }
    return value;
}

setMouseCursor()

void QVistaHelper::setMouseCursor ( QPoint  pos )

private

Definition at line 433 of file qwizard_win.cpp.

Referenced by mouseMoveEvent(), mousePressEvent(), and mouseReleaseEvent().

{
#ifndef QT_NO_CURSOR
    if (rtTop.contains(pos))
        wizard->setCursor(Qt::SizeVerCursor);
    else
        wizard->setCursor(Qt::ArrowCursor);
#endif
}

setTitleBarIconAndCaptionVisible()

void QVistaHelper::setTitleBarIconAndCaptionVisible

(

bool

visible

)

Definition at line 376 of file qwizard_win.cpp.

{
    if (is_vista) {
        WIZ_WTA_OPTIONS opt;
        opt.dwFlags = WIZ_WTNCA_NODRAWICON | WIZ_WTNCA_NODRAWCAPTION;
        if (visible)
            opt.dwMask = 0;
        else
            opt.dwMask = WIZ_WTNCA_NODRAWICON | WIZ_WTNCA_NODRAWCAPTION;
        pSetWindowThemeAttribute(wizard->winId(), WIZ_WTA_NONCLIENT, &opt, sizeof(WIZ_WTA_OPTIONS));
    }
}

setWindowPosHack()

void QVistaHelper::setWindowPosHack

(

)

Definition at line 464 of file qwizard_win.cpp.

{
    const int x = wizard->geometry().x(); // ignored by SWP_NOMOVE
    const int y = wizard->geometry().y(); // ignored by SWP_NOMOVE
    const int w = wizard->width();
    const int h = wizard->height();
    SetWindowPos(wizard->winId(), 0, x, y, w, h, SWP_NOMOVE | SWP_NOZORDER | SWP_FRAMECHANGED);
}

titleBarSize()

static int QVistaHelper::titleBarSize ( )

inlinestatic

Definition at line 103 of file qwizard_win_p.h.

Referenced by drawTitleBar(), resizeEvent(), setDWMTitleBar(), topOffset(), and winEvent().

{ return frameSize() + captionSize(); }

titleOffset()

int QVistaHelper::titleOffset ( )

private

Definition at line 812 of file qwizard_win.cpp.

Referenced by drawTitleBar().

{
    int iconOffset = wizard ->windowIcon().isNull() ? 0 : iconSize() + textSpacing;
    return leftMargin() + iconOffset;
}

topOffset()

int QVistaHelper::topOffset ( )

static

Definition at line 818 of file qwizard_win.cpp.

Referenced by drawTitleBar(), QWizard::paintEvent(), resizeEvent(), and setDWMTitleBar().

{
    if (vistaState() != VistaAero)
        return titleBarSize() + 3;
    static const int aeroOffset =
        QSysInfo::WindowsVersion == QSysInfo::WV_WINDOWS7 ?
        QStyleHelper::dpiScaled(4) : QStyleHelper::dpiScaled(13);
    return aeroOffset + titleBarSize();
}

topPadding()

static int QVistaHelper::topPadding ( )

inlinestatic

Definition at line 104 of file qwizard_win_p.h.

                            { // padding under text
        return int(QStyleHelper::dpiScaled(
                QSysInfo::WindowsVersion >= QSysInfo::WV_WINDOWS7 ? 4 : 6));
    }

vistaState()

QVistaHelper::VistaState QVistaHelper::vistaState ( )

static

Definition at line 286 of file qwizard_win.cpp.

Referenced by drawBlackRect(), drawTitleBar(), drawTitleText(), handleWinEvent(), QWizardPrivate::isVistaThemeEnabled(), QWizardPrivate::layoutInfoForCurrentPage(), mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), resizeEvent(), setDWMTitleBar(), QWizardHeader::setup(), topOffset(), winEvent(), and QWizard::winEvent().

{
    if (instanceCount == 0 || cachedVistaState == Dirty)
        cachedVistaState =
            isCompositionEnabled() ? VistaAero : isThemeActive() ? VistaBasic : Classic;
    return cachedVistaState;
}

winEvent()

bool QVistaHelper::winEvent ( MSG *  message, long *  result  )

private

Definition at line 389 of file qwizard_win.cpp.

Referenced by eventFilter(), and handleWinEvent().

{
    switch (msg->message) {
    case WM_NCHITTEST: {
        LRESULT lResult;
        // Perform hit testing using DWM
        if (pDwmDefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam, &lResult)) {
            // DWM returned a hit, no further processing necessary
            *result = lResult;
        } else {
            // DWM didn't return a hit, process using DefWindowProc
            lResult = DefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam);
            // If DefWindowProc returns a window caption button, just return HTCLIENT (client area).
            // This avoid unnecessary hits to Windows NT style caption buttons which aren't visible but are
            // located just under the Aero style window close button.
            if (lResult == HTCLOSE || lResult == HTMAXBUTTON || lResult == HTMINBUTTON || lResult == HTHELP)
                *result = HTCLIENT;
            else
                *result = lResult;
        }
        break;
    }
    case WM_NCCALCSIZE:
        if (vistaState() == VistaAero) {
            NCCALCSIZE_PARAMS* lpncsp = (NCCALCSIZE_PARAMS*)msg->lParam;
            *result = DefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam);
            lpncsp->rgrc[0].top -= titleBarSize();
        } else {
            return false;
        }
        break;
    default:
        LRESULT lResult;
        // Pass to DWM to handle
        if (pDwmDefWindowProc(msg->hwnd, msg->message, msg->wParam, msg->lParam, &lResult))
            *result = lResult;
        // If the message wasn't handled by DWM, continue processing it as normal
        else
            return false;
    }

    return true;
}

Properties

backButton_

QVistaBackButton* QVistaHelper::backButton_

private

Definition at line 145 of file qwizard_win_p.h.

Referenced by disconnectBackButton(), drawTitleBar(), and QVistaHelper().

cachedVistaState

QVistaHelper::VistaState QVistaHelper::cachedVistaState = QVistaHelper::Dirty

staticprivate

Definition at line 136 of file qwizard_win_p.h.

Referenced by handleWinEvent(), QVistaHelper(), and vistaState().

change

enum QVistaHelper::Changes QVistaHelper::change

private

Referenced by mouseMoveEvent(), mousePressEvent(), and mouseReleaseEvent().

iconSpacing

int QVistaHelper::iconSpacing

private

Definition at line 148 of file qwizard_win_p.h.

Referenced by QVistaHelper().

instanceCount

int QVistaHelper::instanceCount = 0

staticprivate

Definition at line 134 of file qwizard_win_p.h.

Referenced by QVistaHelper(), vistaState(), and ~QVistaHelper().

is_vista

bool QVistaHelper::is_vista = false

staticprivate

Definition at line 135 of file qwizard_win_p.h.

Referenced by isCompositionEnabled(), isThemeActive(), QVistaHelper(), and setTitleBarIconAndCaptionVisible().

pressed

bool QVistaHelper::pressed

private

Definition at line 141 of file qwizard_win_p.h.

Referenced by mouseMoveEvent(), mousePressEvent(), and mouseReleaseEvent().

pressedPos

QPoint QVistaHelper::pressedPos

private

Definition at line 140 of file qwizard_win_p.h.

Referenced by mouseMoveEvent(), and mousePressEvent().

rtTitle

QRect QVistaHelper::rtTitle

private

Definition at line 143 of file qwizard_win_p.h.

Referenced by mousePressEvent(), and resizeEvent().

rtTop

QRect QVistaHelper::rtTop

private

Definition at line 142 of file qwizard_win_p.h.

Referenced by mousePressEvent(), resizeEvent(), and setMouseCursor().

textSpacing

int QVistaHelper::textSpacing

private

Definition at line 149 of file qwizard_win_p.h.

Referenced by QVistaHelper(), and titleOffset().

titleBarOffset

int QVistaHelper::titleBarOffset

private

Definition at line 147 of file qwizard_win_p.h.

wizard

QWizard* QVistaHelper::wizard

private

Definition at line 144 of file qwizard_win_p.h.

Referenced by basicWindowFrameColor(), collapseTopFrameStrut(), drawTitleBar(), eventFilter(), handleWinEvent(), mouseMoveEvent(), mousePressEvent(), mouseReleaseEvent(), paintEvent(), resizeEvent(), setDWMTitleBar(), setMouseCursor(), setTitleBarIconAndCaptionVisible(), setWindowPosHack(), and titleOffset().

---

The documentation for this class was generated from the following files:

• /src/gui/dialogs/qwizard_win_p.h
• /src/gui/dialogs/qwizard_win.cpp