examples/Graphics/Fonts/Fonts.cpp

00001 // Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).
00002 // All rights reserved.
00003 // This component and the accompanying materials are made available
00004 // under the terms of "Eclipse Public License v1.0"
00005 // which accompanies this distribution, and is available
00006 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
00007 //
00008 // Initial Contributors:
00009 // Nokia Corporation - initial contribution.
00010 //
00011 // Contributors:
00012 //
00013 // Description:
00014 //
00015 
00016 #include "FontsGraphicsControl.h"
00017 #include <coemain.h>
00018 
00019 CFontControl::CFontControl() {
00020         // find the number of typefaces
00021         iNumTypefaces = iCoeEnv->ScreenDevice()->NumTypefaces();
00022         // set the number of phases to the number of typefaces
00023         SetMaxPhases(iNumTypefaces);
00024 }
00025 
00026 void CFontControl::UpdateModelL()
00027         {
00028         // set up zoom factor & graphics device map for getting fonts and drawing text
00029         iZoomFactor.SetGraphicsDeviceMap(iCoeEnv->ScreenDevice());
00030         iZoomFactor.SetZoomFactor(TZoomFactor::EZoomOneToOne);
00031         iDeviceMap = &iZoomFactor;
00032 
00033         // find the font to display this phase
00034         TTypefaceSupport* myTypefaceSupport = new TTypefaceSupport;
00035         iCoeEnv->ScreenDevice()->TypefaceSupport(*myTypefaceSupport,Phase());
00036         iCurrentFont = myTypefaceSupport->iTypeface.iName.Des();
00037 
00038         // set up descriptor for commentary area
00039         _LIT(KFormat,"Typeface index=%d. Name=%S. Num heights=%d. (Num typefaces=%d)");
00040         TBuf<128> commentaryText;
00041         commentaryText.Format(KFormat,Phase(),&iCurrentFont,myTypefaceSupport->iNumHeights,iNumTypefaces);
00042         iGraphObserver->NotifyStatus(commentaryText);
00043         delete myTypefaceSupport;
00044         };
00045 
00046 void CFontControl::Draw(const TRect& /* aRect */) const
00047         {
00048         // setup screen for example
00049         CWindowGc& gc=SystemGc();
00050         gc.Clear();     
00051         
00052         // create a centered rectangle of the default size
00053         TRect screenRect=Rect();
00054 
00055         // set up absolute font-spec and text box for 300 twip font
00056         TFontSpec fontSpec(iCurrentFont,300);
00057         // find the nearest font to the specified one
00058         CFont* screenFont;                                                                              
00059         iDeviceMap->GetNearestFontInTwips(screenFont,fontSpec);
00060         // use it for this graphics context
00061         gc.UseFont(screenFont);
00062 
00063         // get height of screen box
00064     TInt screenHeight=screenRect.Height();
00065         // get font height
00066     TInt textHeight = screenFont->HeightInPixels();
00067 
00068         // set up the positioning of the character set rows
00069         TInt exampleMargin = 0;
00070         TInt currentOffset = ((screenHeight+textHeight)/2) - (TInt)(textHeight*2.4);
00071 
00072         // set up descriptors to hold Unicode characters 32 to 255
00073         TBuf<50> buffer;
00074         TInt endPoint[6] = {64,96,138,182,216,255};
00075         TInt count = 32;
00076         for(TInt pass=0;pass<=5;pass++) {
00077                 while (count<=endPoint[pass]) {
00078                         buffer.Append((TUint)count);
00079                         count++;
00080                 }
00081                 // draw the row in the current font
00082                 gc.DrawText(buffer,screenRect,currentOffset,CGraphicsContext::ECenter,exampleMargin);   
00083                 currentOffset = currentOffset + (TInt)(textHeight*1.2);
00084                 buffer.Zero();
00085         }
00086 
00087         // discard and release font
00088         gc.DiscardFont();
00089         iDeviceMap->ReleaseFont(screenFont);    
00090         }
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Copyright ©2010 Nokia Corporation and/or its subsidiary(-ies).
All rights reserved. Unless otherwise stated, these materials are provided under the terms of the Eclipse Public License v1.0.