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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-A51E334E-F410-55A9-AB07-82F8A1D113B4" xml:lang="en"><title>Graphics

    13 Quick Start</title><shortdesc>The Graphics package provides Symbian devices with a means of visual

    14 communication. It is responsible for providing a system-wide interface with

    15 the physical display(s) and handles input events from physical input devices

    16 such as keypads and touch screens. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

    17 <p>There are two variants of the graphics architecture in Symbian^3. These

    18 are referred to as <xref href="GUID-D93978BE-11A3-5CE3-B110-1DEAA5AD566C.dita">ScreenPlay</xref> (sometimes

    19 also called the New Graphics Architecture or NGA) and the <xref href="GUID-F64E6551-670E-5E12-8103-DE504D3EC94F.dita">non-ScreenPlay

    20 variant</xref> (sometimes called the non-NGA variant). The Graphics guide

    21 documentation covers both variants. When the documentation applies to only

    22 one variant, it is clearly stated at the top of the page. </p>

    23 <p>The documentation is aimed at two separate

    24 audiences, which we define as follows: </p>

    25 <ul>

    26 <li id="GUID-6DEE2E4F-C277-5C1D-B7DB-BE06FC6D73B1"><p> <b>Device creators</b>.

    27 These are software engineers who are developing software that is embedded

    28 on a device in such a way that end users cannot remove it in the normal operation

    29 of the phone. Typically this software is built into ROM. This group may include

    30 UI platform developers, system integrators, and creators of device drivers. </p> </li>

    31 <li id="GUID-CC9AD2AB-2B33-5C9B-B95B-1F145A26A281"><p> <b>Application developers</b>.

    32 These are software engineers who are developing applications for ROM or after-market <xref href="GUID-AFE0238A-D6A4-5D07-BB99-85E8CF97BD26.dita">installation by using a SIS

    33 file</xref>. </p> </li>

    34 </ul>

    35 <p>When the documentation is aimed specifically

    36 at one of these audiences, it is clearly stated at the top of the page. </p>

    37 <section id="GUID-7CED3F9D-72CC-4C2B-896A-68860CA9703E"><title>System Model</title> <p>The

    38 following diagram shows the Graphics package within the Symbian^3 System Model.

    39 The System Model is a high-level overview of the Symbian architecture. The

    40 components are grouped to show their relationships to each other. Within the

    41 Graphics package, components are grouped into collections, which are shown

    42 as white boxes in the diagram. The Graphics documentation is organized according

    43 to the System Model structure. </p><p>Although the System Model provides a

    44 useful way of grouping the large number of components that make up the Graphics

    45 package, it does not completely reflect the architectural relationships between

    46 the components. </p> <fig id="GUID-73E547BA-5AC2-5B10-8422-3B8BA28E2D40">

    47 <title>              The Graphics package in the Symbian Foundation System

    48 Model            </title>

    49 <image href="GUID-AC5ADA77-EBA1-597E-A6B7-80157E9DE2B2_d0e203146_href.png" placement="inline"/>

    50 </fig>  </section>

    51 <section id="GUID-7164B04D-C0C6-47DA-9D70-E0924D68C462"><title>Technologies</title> <ul>

    52 <li id="GUID-BCA14E5B-B637-5A43-8A1E-4A945507CF35"><p>For information on the

    53 two architectures, see <xref href="GUID-D93978BE-11A3-5CE3-B110-1DEAA5AD566C.dita">The

    54 ScreenPlay Architecture</xref> and <xref href="GUID-F64E6551-670E-5E12-8103-DE504D3EC94F.dita">The

    55 Non-ScreenPlay Architecture</xref>. </p> </li>

    56 <li id="GUID-6A683E3D-9FE2-5392-932A-E6DAC34A943C"><p>For

    57 information about how to enable the two variants, see <xref href="GUID-6D8A1FC7-095B-587E-8274-23C132978C53.dita">Enabling

    58 the Graphics Architecture Variants</xref>. </p> </li>

    59 <li id="GUID-28824D17-7E98-57CD-B618-AFA2109E95D8"><p>The graphics architecture

    60 enables device creators to take advantage of graphics processing hardware

    61 when it is available, and to use software implementations when it is not.

    62 For more information, see <xref href="GUID-EF62BF88-3687-505D-8BD7-EEDF36246E56.dita">Graphics

    63 Hardware Acceleration</xref>. </p> </li>

    64 <li id="GUID-BEB89CAC-B735-5D45-925F-1C35C15A4B36"><p>Symbian provides support

    65 for a number of APIs defined and administered by the Khronos group. These

    66 enable the authoring and playback of dynamic media on a wide variety of platforms

    67 and devices. For more information, see <xref href="GUID-50254C2F-57B6-58C4-911F-294EF2B79C04.dita">Khronos

    68 API Support </xref>. </p> </li>

    69 <li id="GUID-27F78BF4-FA0E-5A3D-B64B-A1596E212724"><p>Application developers

    70 use the Window Server client-side library to control windows and respond to

    71 key and pointer events in their applications. For more information, see <xref href="GUID-DC5E8C7D-D697-53E8-87F4-344301430E61.dita">Window Server Client-Side

    72 Library</xref>. </p> </li>

    73 </ul> </section>

    74 </conbody><related-links>

    75 <link href="GUID-47851718-8DCA-57F5-8520-7044048A5852.dita"><linktext>Graphics

    76 Example Code</linktext></link>

    77 <link href="GUID-975CBC70-81E6-5FA2-80CE-88DD2ABE9595.dita"><linktext>Graphics

    78                 Guide</linktext></link>

    79 <link href="GUID-99BC101A-9466-59EE-B5C9-7622BAF6E6FF.dita"><linktext>Graphics

    80 Concepts</linktext></link>

    81 <link href="GUID-6D8F2E48-42E2-5C52-92E6-2C3CD4A16C5E.dita">

    82 <linktext>Graphics Tutorials</linktext></link>

    83 <link href="GUID-9ABF848C-27E1-57E3-9169-239C5CA865A8.dita">

    84 <linktext>Graphics Reference</linktext></link>

    85 </related-links></concept>