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

     2 **

     3 ** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (developer.feedback@nokia.com)

     6 **

     7 ** This file is part of the HbInput module of the UI Extensions for Mobile.

     8 **

     9 ** GNU Lesser General Public License Usage

    10 ** This file may be used under the terms of the GNU Lesser General Public

    11 ** License version 2.1 as published by the Free Software Foundation and

    12 ** appearing in the file LICENSE.LGPL included in the packaging of this file.

    13 ** Please review the following information to ensure the GNU Lesser General

    14 ** Public License version 2.1 requirements will be met:

    15 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    16 **

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

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

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

    20 **

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

    22 ** Nokia at developer.feedback@nokia.com.

    23 **

    24 ****************************************************************************/

    25 #include <QGraphicsScene>

    26 #include <QGraphicsSceneMouseEvent>

    27 #include <hbcolorscheme.h>

    28 #include "hbinputpreviewlabel.h"

    29 #include "hbfontspec.h"

    30 

    31 /*!

    32     \fn void HbPreviewLabel::selected()

    33 

    34     This signal is emitted when there is a mouse press event.

    35 */

    36 

    37 /*!

    38 Constructor.

    39 @param previewSymbols The string of the label and parent Graphics Item.

    40 */

    41 HbPreviewLabel::HbPreviewLabel(QString previewSymbols, QGraphicsItem *parent)

    42     :HbWidget(parent),

    43     mTextItem(0)

    44 {

    45         mTextItem = static_cast<HbTextItem*>(this->style()->createPrimitive(HbStyle::P_Label_text, this));

    46         mTextItem->setText(previewSymbols);

    47         mTextItem->setAlignment(Qt::AlignCenter);

    48         mTextItem->setFontSpec(HbFontSpec(HbFontSpec::Primary));

    49 }

    50 

    51 /*!

    52 Destroy the object

    53 */

    54 HbPreviewLabel::~HbPreviewLabel()

    55 {

    56 }

    57 

    58 /*!

    59 sets geometry of textItem

    60 @param itemsize the Geometry of Button.

    61 */

    62 void HbPreviewLabel::setTextGeometry(qreal width, qreal height)

    63 {

    64 	QColor color = HbColorScheme::color("qtc_editor_normal");

    65     QRectF rect;

    66     rect.setWidth(width/2);

    67     rect.setHeight(height);

    68     if (color.isValid()) {

    69         mTextItem->setTextColor(color);

    70     }

    71     mTextItem->setGeometry(rect);

    72 }

    73 

    74 /*!

    75 This function handles the mouse press event.

    76 @param event The mouse events in the graphics view framework.

    77 */

    78 void HbPreviewLabel::mousePressEvent(QGraphicsSceneMouseEvent * event)

    79 {

    80     Q_UNUSED(event);

    81     emit showAccentedPreview(mTextItem->text(),sceneBoundingRect());

    82 }

    83 

    84 /*!

    85 This function handles the mouse move event.

    86 @param event The mouse events in the graphics view framework.

    87 

    88 In case of a key/touch movement will activate a mousePressEvent on another Label

    89 and the next Label is set as the grabber item.

    90 */

    91 void HbPreviewLabel::mouseMoveEvent(QGraphicsSceneMouseEvent * event)

    92 {

    93     bool transfered = false;

    94     if (!isUnderMouse()) {

    95         // get the list of item's at current mouse position

    96         QList<QGraphicsItem *> list = scene()->items(event->scenePos());

    97         for (int i =0; i < list.count(); i++) {

    98             // let's check if we have HbPreviewLabel

    99             HbPreviewLabel *label  = hbpreviewlabel_cast(list.at(i));

   100             if (label  && label->isEnabled() && (label->parent() == parent())) {

   101                 // release old label

   102                 ungrabMouse();

   103                 event->setButton(Qt::LeftButton);

   104                 // now call the mousepressEvent function of the Label under mouse

   105                 QGraphicsSceneMouseEvent pressEvent;

   106                 pressEvent.setButton(Qt::LeftButton);

   107                 label->mousePressEvent(&pressEvent);

   108                 // now to make label under cursor to get mouse events we have to manually make that Label

   109                 // a mouse grabber item. after this Label will start recieving the press movements.

   110                 label->grabMouse();

   111                 transfered = true;

   112                 break;

   113             }

   114         }

   115         QRectF rect = boundingRect();

   116         QPointF pos = event->pos();

   117         if (!transfered && (pos.y() < 0  ||pos.y() > rect.height() || pos.x() > rect.width() || pos.x() < 0) ) {

   118             emit hideAccentedPreview();

   119         }

   120     }

   121     if (!transfered) {

   122         if (isUnderMouse()) {

   123             QGraphicsSceneMouseEvent pressEvent;

   124             pressEvent.setButton(Qt::LeftButton);

   125             HbPreviewLabel::mousePressEvent(&pressEvent);

   126         }

   127     }

   128 }

   129 

   130 /*!

   131 This function handles the mouse release event.

   132 @param event The mouse events in the graphics view framework.

   133 

   134 emits the signal selected to input the corrosponding character mapped to the key whenever

   135 a key is released and afterwards hides the PreviewPopup by emiitting hidePreview

   136 */

   137 void HbPreviewLabel::mouseReleaseEvent(QGraphicsSceneMouseEvent * event)

   138 {

   139     Q_UNUSED(event);

   140     if (isUnderMouse()) {

   141         emit selected();

   142     }

   143     emit hidePreview();

   144     ungrabMouse();

   145 }

   146 

   147 // End Of File