Symbian3/SDK/Source/GUID-60B979FB-43BD-480E-8E17-1D3DA2002CB1.dita
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     1 <?xml version="1.0" encoding="utf-8"?>
       
     2 <!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
       
     3 <!-- This component and the accompanying materials are made available under the terms of the License 
       
     4 "Eclipse Public License v1.0" which accompanies this distribution, 
       
     5 and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
       
     6 <!-- Initial Contributors:
       
     7     Nokia Corporation - initial contribution.
       
     8 Contributors: 
       
     9 -->
       
    10 <!DOCTYPE concept
       
    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
       
    12 <concept id="GUID-60B979FB-43BD-480E-8E17-1D3DA2002CB1" xml:lang="en"><title>Slider
       
    13 pop-up</title><prolog><metadata><keywords/></metadata></prolog><conbody>
       
    14 <p>The Slider pop-up component can be used for situations where a value is
       
    15 changed with a slider, for example when changing zoom or volume level. The
       
    16 common Slider pop-up component has a set of elements from which to select
       
    17 and modify the slider in question, for example, value ranges, whether to have
       
    18 current value as text included, or additional icons related to the slider.</p>
       
    19 <p>For application specific slider pop-up the application may define ways
       
    20 to open the pop-up. For common pop-up such as Volume Control, ways to open
       
    21 the pop-up are defined. The Slider pop-up has default time-out after which
       
    22 it disappears, but for good reason this time-out can be overridden by the
       
    23 application. </p>
       
    24 <p>Instead of using the pop-up, the application may define the slider to be
       
    25 always visible (fixed in the layout). If slider is fixed in the layout, the
       
    26 pop-up is not shown.</p>
       
    27 <p>The orientation of the slider pop-up can be either horizontal or vertical.
       
    28 The orientation and location are always the same across applications, unless
       
    29 application uses the slider as fixed in the layout. Value growth direction
       
    30 in Slider is always either up or right depending on the Slider orientation
       
    31 in the UI. </p>
       
    32 <table id="GUID-7A441CF1-6B7B-43EF-9E31-AF45034B49FB"><title>Default touch
       
    33 events for the Slider pop-up</title>
       
    34 <tgroup cols="3"><colspec colname="col1" colwidth="0.80*"/><colspec colname="col2" colwidth="1.01*"/><colspec colname="col3" colwidth="1.19*"/>
       
    35 <thead>
       
    36 <row>
       
    37 <entry valign="top"><p>User action</p></entry>
       
    38 <entry valign="top"><p>State change</p></entry>
       
    39 <entry valign="top"><p>Feedback</p></entry>
       
    40 </row>
       
    41 </thead>
       
    42 <tbody>
       
    43 <row>
       
    44 <entry><p>Touch down (on slider)</p></entry>
       
    45 <entry><p>Slider thumb is moved to the nearest slider step position on the
       
    46 slider. Value is changed accordingly.</p><p>If touch down event is performed
       
    47 in the middle of two slider step positions, the slider thumb is moved towards
       
    48 the greater (larger) value.</p></entry>
       
    49 <entry><p>Tactile: No touch down effect. Sensitive slider effect and audio
       
    50 feedback is provided when the thumb moves.</p></entry>
       
    51 </row>
       
    52 <row>
       
    53 <entry><p>Touch down (on slider thumb)</p></entry>
       
    54 <entry><p>Slider thumb is activated and can be moved.</p></entry>
       
    55 <entry><p>Tactile: Sensitive slider effect is provided with touch down.</p></entry>
       
    56 </row>
       
    57 <row>
       
    58 <entry><p>Touch release</p></entry>
       
    59 <entry><p>No effect</p></entry>
       
    60 <entry><p>Tactile: Sensitive slider effect is provided with the touch release
       
    61 (on slider thumb).</p></entry>
       
    62 </row>
       
    63 <row>
       
    64 <entry><p>Touch down and hold (on slider)</p></entry>
       
    65 <entry><p>Moves the thumb step by step to the place where touched down.</p></entry>
       
    66 <entry><p>Tactile: Hold slider effect is given with long touch on the slider.
       
    67 Effect is bound to the steps. If there are more than 15 steps, then smooth
       
    68 slider effect is given instead.</p></entry>
       
    69 </row>
       
    70 <row>
       
    71 <entry><p>Touch down and hold (on slider thumb)</p></entry>
       
    72 <entry><p>Inactive</p></entry>
       
    73 <entry><p>Tactile: No effect</p></entry>
       
    74 </row>
       
    75 <row>
       
    76 <entry><p>Touch down and move</p></entry>
       
    77 <entry><p>Slider thumb is moved along with the touch event. It moves step
       
    78 by step via its possible positions. Value is changing accordingly. </p><p>If
       
    79 touch release in the middle of two slider step positions, the slider thumb
       
    80 is moved towards the greater (larger) value. </p><p><note>The slider control
       
    81 area is the entire main pane area.</note></p></entry>
       
    82 <entry><p>Tactile: Smooth slider effect is provide when dragging from the
       
    83 thumb. </p><p>Smooth feedback can be increasing and decreasing when there
       
    84 is a meaning to use this kind of feature, for example, in volume and zoom
       
    85 slider.</p></entry>
       
    86 </row>
       
    87 <row>
       
    88 <entry><p>Touch down and cancel (slider thumb)</p></entry>
       
    89 <entry><p>Slider thumb is moved to the nearest slider step position where
       
    90 it was when the touch left the slider control area.</p></entry>
       
    91 <entry><p>Tactile: No feedback is provide with touch release after drag outside.</p></entry>
       
    92 </row>
       
    93 </tbody>
       
    94 </tgroup>
       
    95 </table>
       
    96 <p/>
       
    97 <table id="GUID-905C951F-5C5D-431E-84E9-384EFDBE3192"><title>Default touch
       
    98 events for the Minus / Plus indicators.</title>
       
    99 <tgroup cols="3"><colspec colname="col1" colwidth="0.80*"/><colspec colname="col2" colwidth="1.01*"/><colspec colname="col3" colwidth="1.19*"/>
       
   100 <thead>
       
   101 <row>
       
   102 <entry valign="top"><p>User action</p></entry>
       
   103 <entry valign="top"><p>State change</p></entry>
       
   104 <entry valign="top"><p>Feedback</p></entry>
       
   105 </row>
       
   106 </thead>
       
   107 <tbody>
       
   108 <row>
       
   109 <entry><p>Touch down</p></entry>
       
   110 <entry><p>Slider thumb moves either up or down. Direction depends on which
       
   111 indicator has been touched.</p></entry>
       
   112 <entry><p>Tactile: Sensitive button effect and audio feedback is provided
       
   113 with the touch down event.</p></entry>
       
   114 </row>
       
   115 <row>
       
   116 <entry><p>Touch down and hold (keep touch down)</p></entry>
       
   117 <entry><p>This action performs a “key repeat”, similar to many single touch
       
   118 down and release on the indicator.</p></entry>
       
   119 <entry><p>Tactile: Sensitive button effect provided with steps.</p></entry>
       
   120 </row>
       
   121 <row>
       
   122 <entry><p>Touch release</p></entry>
       
   123 <entry><p>Slider thumb stops in its position</p></entry>
       
   124 <entry><p>Tactile: Sensitive button effect given with touch release event.</p></entry>
       
   125 </row>
       
   126 <row>
       
   127 <entry><p>Touch down and move outside and release the control area</p></entry>
       
   128 <entry><p>Slider’s thumb remains in the position, where it was, before moving
       
   129 out of both pop-up and indicator area.</p></entry>
       
   130 <entry><p>Tactile: No effect</p></entry>
       
   131 </row>
       
   132 </tbody>
       
   133 </tgroup>
       
   134 </table>
       
   135 <section id="GUID-1B1C405D-61EF-4E54-8704-23EA67FEC11A"><title>Using
       
   136 slider pop-ups in C++ applications</title><p>The API to use for the slider
       
   137 pop-up is the Slider API.</p><p>To use a slider pop-up in your application,
       
   138 create an instance of the class <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknSlider.html" format="application/java-archive"><codeph>CAknSlider</codeph></xref>.</p><p>Use the method <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknSlider.html#522ccd7bdb0fac6707734578e2d4ed7b" format="application/java-archive"><codeph>CAknSlider::SetValueL()</codeph></xref> to set the slider handle's position.
       
   139 To set the range of acceptable values, use the method <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknSlider.html#e6e3b16a15f653eb9fc5b207f7852857" format="application/java-archive"><codeph>CAknSlider::SetRange()</codeph></xref>. To set the step size, use
       
   140 the method <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknSlider.html#f72ea3d251c686948dfea1dbcf9be170" format="application/java-archive"><codeph>CAknSlider::SetStepSize()</codeph></xref>.</p><p>To set the texts for the minimum and maximum values, use the
       
   141 methods <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknSlider.html#0359150c9fd3d2390de7c0dd6f7d6063" format="application/java-archive"><codeph>CAknSlider::SetMinimumTextL()</codeph></xref> and <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknSlider.html#882ca8ea40249fd2636748a116370fed" format="application/java-archive"><codeph>CAknSlider::SetMaximumTextL()</codeph></xref>. </p><p>To enable drag events in the slider, use the method <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknSlider.html#a3db99850ff68e4a80071de18befdcd1" format="application/java-archive"><codeph>CAknSlider::EnableDrag()</codeph></xref></p><p>To use a custom graphic in your slider component, use the method <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknSlider.html#6161f69289ee1c7e0f47de8fee21ecee" format="application/java-archive"><codeph>CAknSlider::SetGraphics()</codeph></xref>.</p></section>
       
   142 </conbody></concept>