1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the documentation of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 //! [0]

    43     opt.initFrom(q);

    44         if (down)

    45         opt.state |= QStyle::State_Sunken;

    46     if (tristate && noChange)

    47         opt.state |= QStyle::State_NoChange;

    48     else

    49         opt.state |= checked ? QStyle::State_On :

    50         QStyle::State_Off;

    51     if (q->testAttribute(Qt::WA_Hover) &&  q->underMouse()) {

    52         if (hovering)

    53         opt.state |= QStyle::State_MouseOver;

    54         else

    55         opt.state &= ~QStyle::State_MouseOver;

    56     }

    57     opt.text = text;

    58     opt.icon = icon;

    59     opt.iconSize = q->iconSize();

    60 //! [0]

    61 

    62 

    63 //! [1]

    64     state = QStyle::State_None;

    65     if (widget->isEnabled())

    66         state |= QStyle::State_Enabled;

    67     if (widget->hasFocus())

    68         state |= QStyle::State_HasFocus;

    69     if (widget->window()->testAttribute(Qt::WA_KeyboardFocusChange))

    70         state |= QStyle::State_KeyboardFocusChange;

    71     if (widget->underMouse())

    72         state |= QStyle::State_MouseOver;

    73     if (widget->window()->isActiveWindow())

    74         state |= QStyle::State_Active;

    75 #ifdef Q_WS_MAC

    76     extern bool qt_mac_can_clickThrough(const QWidget *w); //qwidget_mac.cpp

    77     if (!(state & QStyle::State_Active) && !qt_mac_can_clickThrough(widget))

    78         state &= ~QStyle::State_Enabled;

    79 #endif

    80 #ifdef QT_KEYPAD_NAVIGATION

    81     if (widget->hasEditFocus())

    82         state |= QStyle::State_HasEditFocus;

    83 #endif

    84 

    85     direction = widget->layoutDirection();

    86     rect = widget->rect();

    87     palette = widget->palette();

    88     fontMetrics = widget->fontMetrics();

    89 //! [1]

    90 

    91 

    92 //! [2]

    93     QStylePainter p(this);

    94     QStyleOptionButton opt = d->getStyleOption();

    95     p.drawControl(QStyle::CE_CheckBox, opt);

    96 //! [2]

    97 

    98 

    99 //! [3]

   100     QStyleOptionButton subopt = *btn;

   101     subopt.rect = subElementRect(SE_CheckBoxIndicator, btn, widget);

   102     drawPrimitive(PE_IndicatorCheckBox, &subopt, p, widget);

   103     subopt.rect = subElementRect(SE_CheckBoxContents, btn, widget);

   104     drawControl(CE_CheckBoxLabel, &subopt, p, widget);

   105 

   106     if (btn->state & State_HasFocus) {

   107         QStyleOptionFocusRect fropt;

   108         fropt.QStyleOption::operator=(*btn);

   109         fropt.rect = subElementRect(SE_CheckBoxFocusRect, btn, widget);

   110         drawPrimitive(PE_FrameFocusRect, &fropt, p, widget);

   111     }

   112 //! [3]

   113 

   114 

   115 //! [4]

   116     const QStyleOptionButton *btn = qstyleoption_cast<const QStyleOptionButton *>(opt);

   117     uint alignment = visualAlignment(btn->direction, Qt::AlignLeft | Qt::AlignVCenter);

   118 

   119     if (!styleHint(SH_UnderlineShortcut, btn, widget))

   120         alignment |= Qt::TextHideMnemonic;

   121     QPixmap pix;

   122     QRect textRect = btn->rect;

   123     if (!btn->icon.isNull()) {

   124         pix = btn->icon.pixmap(btn->iconSize, btn->state & State_Enabled ? QIcon::Normal : QIcon::Disabled);

   125         drawItemPixmap(p, btn->rect, alignment, pix);

   126         if (btn->direction == Qt::RightToLeft)

   127             textRect.setRight(textRect.right() - btn->iconSize.width() - 4);

   128         else

   129             textRect.setLeft(textRect.left() + btn->iconSize.width() + 4);

   130     }

   131     if (!btn->text.isEmpty()){

   132         drawItemText(p, textRect, alignment | Qt::TextShowMnemonic,

   133             btn->palette, btn->state & State_Enabled, btn->text, QPalette::WindowText);

   134     }

   135 //! [4]