Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/_fonts_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/Graphics/Fonts/Fonts.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">//</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="preprocessor">#include "FontsGraphicsControl.h"</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <coemain.h></span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 CFontControl::CFontControl() {
<a name="l00020"></a>00020 <span class="comment">// find the number of typefaces</span>
<a name="l00021"></a>00021 iNumTypefaces = iCoeEnv->ScreenDevice()->NumTypefaces();
<a name="l00022"></a>00022 <span class="comment">// set the number of phases to the number of typefaces</span>
<a name="l00023"></a>00023 SetMaxPhases(iNumTypefaces);
<a name="l00024"></a>00024 }
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="keywordtype">void</span> CFontControl::UpdateModelL()
<a name="l00027"></a>00027 {
<a name="l00028"></a>00028 <span class="comment">// set up zoom factor & graphics device map for getting fonts and drawing text</span>
<a name="l00029"></a>00029 iZoomFactor.SetGraphicsDeviceMap(iCoeEnv->ScreenDevice());
<a name="l00030"></a>00030 iZoomFactor.SetZoomFactor(TZoomFactor::EZoomOneToOne);
<a name="l00031"></a>00031 iDeviceMap = &iZoomFactor;
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="comment">// find the font to display this phase</span>
<a name="l00034"></a>00034 TTypefaceSupport* myTypefaceSupport = <span class="keyword">new</span> TTypefaceSupport;
<a name="l00035"></a>00035 iCoeEnv->ScreenDevice()->TypefaceSupport(*myTypefaceSupport,Phase());
<a name="l00036"></a>00036 iCurrentFont = myTypefaceSupport->iTypeface.iName.Des();
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="comment">// set up descriptor for commentary area</span>
<a name="l00039"></a>00039 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KFormat,<span class="stringliteral">"Typeface index=%d. Name=%S. Num heights=%d. (Num typefaces=%d)"</span>);
<a name="l00040"></a>00040 TBuf<128> commentaryText;
<a name="l00041"></a>00041 commentaryText.Format(KFormat,Phase(),&iCurrentFont,myTypefaceSupport->iNumHeights,iNumTypefaces);
<a name="l00042"></a>00042 iGraphObserver->NotifyStatus(commentaryText);
<a name="l00043"></a>00043 <span class="keyword">delete</span> myTypefaceSupport;
<a name="l00044"></a>00044 };
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="keywordtype">void</span> CFontControl::Draw(<span class="keyword">const</span> TRect& <span class="comment">/* aRect */</span>)<span class="keyword"> const</span>
<a name="l00047"></a>00047 <span class="keyword"> </span>{
<a name="l00048"></a>00048 <span class="comment">// setup screen for example</span>
<a name="l00049"></a>00049 CWindowGc& gc=SystemGc();
<a name="l00050"></a>00050 gc.Clear();
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="comment">// create a centered rectangle of the default size</span>
<a name="l00053"></a>00053 TRect screenRect=Rect();
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="comment">// set up absolute font-spec and text box for 300 twip font</span>
<a name="l00056"></a>00056 TFontSpec fontSpec(iCurrentFont,300);
<a name="l00057"></a>00057 <span class="comment">// find the nearest font to the specified one</span>
<a name="l00058"></a>00058 CFont* screenFont;
<a name="l00059"></a>00059 iDeviceMap->GetNearestFontInTwips(screenFont,fontSpec);
<a name="l00060"></a>00060 <span class="comment">// use it for this graphics context</span>
<a name="l00061"></a>00061 gc.UseFont(screenFont);
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="comment">// get height of screen box</span>
<a name="l00064"></a>00064 TInt screenHeight=screenRect.Height();
<a name="l00065"></a>00065 <span class="comment">// get font height</span>
<a name="l00066"></a>00066 TInt textHeight = screenFont->HeightInPixels();
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="comment">// set up the positioning of the character set rows</span>
<a name="l00069"></a>00069 TInt exampleMargin = 0;
<a name="l00070"></a>00070 TInt currentOffset = ((screenHeight+textHeight)/2) - (TInt)(textHeight*2.4);
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">// set up descriptors to hold Unicode characters 32 to 255</span>
<a name="l00073"></a>00073 TBuf<50> buffer;
<a name="l00074"></a>00074 TInt endPoint[6] = {64,96,138,182,216,255};
<a name="l00075"></a>00075 TInt count = 32;
<a name="l00076"></a>00076 <span class="keywordflow">for</span>(TInt pass=0;pass<=5;pass++) {
<a name="l00077"></a>00077 <span class="keywordflow">while</span> (count<=endPoint[pass]) {
<a name="l00078"></a>00078 buffer.Append((TUint)count);
<a name="l00079"></a>00079 count++;
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081 <span class="comment">// draw the row in the current font</span>
<a name="l00082"></a>00082 gc.DrawText(buffer,screenRect,currentOffset,CGraphicsContext::ECenter,exampleMargin);
<a name="l00083"></a>00083 currentOffset = currentOffset + (TInt)(textHeight*1.2);
<a name="l00084"></a>00084 buffer.Zero();
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="comment">// discard and release font</span>
<a name="l00088"></a>00088 gc.DiscardFont();
<a name="l00089"></a>00089 iDeviceMap->ReleaseFont(screenFont);
<a name="l00090"></a>00090 }
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