1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #include "webzoomslider_p.h"

    20 #include "webzoomslider.h"

    21 #include "wrtbrowsercontainer.h"

    22 #include "WrtPageManager.h"

    23 

    24 #define SINGLE_STEP 5

    25 

    26 namespace WRT {

    27 

    28 WebZoomSliderPrivate::WebZoomSliderPrivate(WrtPageManager* pageMgr, QWidget* parent) :

    29     m_pageMgr(pageMgr),

    30     m_slider(0),

    31     m_timer(0),

    32     m_widgetParent(parent),

    33     m_idleTimeout(0),

    34     m_dragging(false)

    35 {

    36     Q_ASSERT(m_pageMgr);

    37 

    38     m_slider = new QSlider(m_widgetParent);

    39     m_slider->setTickPosition(QSlider::NoTicks);

    40     m_slider->setTracking(true);

    41     m_slider->setRange(WEBPAGE_ZOOM_RANGE_MIN, WEBPAGE_ZOOM_RANGE_MAX);

    42     m_slider->setSingleStep(SINGLE_STEP);

    43     m_slider->setPageStep(WEBPAGE_ZOOM_PAGE_STEP);    

    44 }

    45 

    46 WebZoomSliderPrivate::~WebZoomSliderPrivate()

    47 {

    48 }   

    49 

    50 /*!

    51  * \class WebZoomSlider

    52  *

    53  * \brief A control for zooming in and out the page

    54  */

    55 

    56 /*!

    57  * Constructor depends on page manager to select current page

    58  * @param pageMgr : handle to the pageMgr for this class

    59  * @param parent  : widget parent handle for this class

    60  */

    61 WebZoomSlider::WebZoomSlider(WrtPageManager* pageMgr, QWidget* parent) : 

    62     QObject(parent),

    63     d(new WebZoomSliderPrivate(pageMgr, parent))

    64 {

    65     WrtBrowserContainer *page = d->m_pageMgr->currentPage();

    66     int val = (page) ? page->pageZoomFactor() * 100 : 100;

    67     if (val < WEBPAGE_ZOOM_RANGE_MIN && val > WEBPAGE_ZOOM_RANGE_MAX)

    68         val = 100;

    69     d->m_slider->setValue(val);

    70 

    71     connect(d->m_slider, SIGNAL(valueChanged(int)), this, SLOT(zoom(int)));

    72     connect(d->m_slider, SIGNAL(sliderPressed()), this, SLOT(sliderPressed()));

    73     connect(d->m_slider, SIGNAL(sliderReleased()), this, SLOT(sliderReleased()));

    74     setGeometry(d->m_widgetParent->geometry());

    75 }

    76 

    77 /*!

    78  * Basic destructor

    79  */

    80 WebZoomSlider::~WebZoomSlider()

    81 {

    82     delete d;

    83 }

    84 

    85 /*!

    86   Sets the slider 3/4 of the way to the right and centers vertically

    87   so slider is 5% below the top of the view and 5% above the bottom of the view,

    88   leaving 90% for the height of the slider.

    89   Width and other style/sizing is done in ui's qss

    90   @param rect :

    91 */

    92 void WebZoomSlider::setGeometry(const QRect& rect)

    93 {

    94     // calc geometry but don't yet show

    95     d->m_slider->setOrientation(Qt::Vertical);

    96     d->m_slider->setFixedHeight(rect.height() * .90);

    97     d->m_slider->move(QPoint(rect.width() * .75 , rect.height() * .05));

    98 }

    99 

   100 /*!

   101   Show the slider and set idle timeout to time since slider last touched

   102 */

   103 void WebZoomSlider::show(int idleTimeout)

   104 {

   105     d->m_idleTimeout = idleTimeout;

   106 

   107     d->m_slider->show();

   108 

   109     // create timer to keep track of elapsed time since user touched slider

   110     d->m_timer = new QTimer(this);

   111     connect(d->m_timer, SIGNAL(timeout()), this, SIGNAL(idleTimeout()));

   112     d->m_timer->start(d->m_idleTimeout);

   113 }

   114 

   115 /*!

   116   set the zoom level on the current page according to value

   117   @param value : new zoom level to be set 

   118 */

   119 void WebZoomSlider::zoom ( int value )

   120 {

   121     WrtBrowserContainer *page =d->m_pageMgr->currentPage();

   122     if (page) {

   123         if (d->m_dragging)

   124             page->setPageDirtyZoomFactor(value / 100.00);

   125         else

   126             page->setPageZoomFactor(value / 100.00);

   127     }

   128     // stop timer while the slider is pressed or restart timer if slider is controlled by the keyboard

   129     if (d->m_dragging) {

   130         if (d->m_timer && d->m_timer->isActive())

   131             d->m_timer->stop();

   132     }

   133     else

   134         d->m_timer->start(d->m_idleTimeout);

   135 }

   136 

   137 void WebZoomSlider::sliderPressed()

   138 {

   139     d->m_dragging = true;

   140 }

   141 

   142 void WebZoomSlider::sliderReleased()

   143 {

   144     WrtBrowserContainer *page =d->m_pageMgr->currentPage();

   145     if (page) {

   146         page->setPageZoomFactor(d->m_slider->value() / 100.00);

   147     }

   148     // reset timer

   149     d->m_timer->start(d->m_idleTimeout);

   150     d->m_dragging = false;

   151 }

   152 /*!

   153   \fn void ImageView::idleTimeout();

   154   emitted when the slider has been idle for some time

   155 */

   156 

   157 

   158 } // namespace WRT