examples/Graphics/Fonts/Fonts.cpp

/*
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Description:  
*/


#include "FontsGraphicsControl.h"
#include <coemain.h>

CFontControl::CFontControl() {
        // find the number of typefaces
        iNumTypefaces = iCoeEnv->ScreenDevice()->NumTypefaces();
        // set the number of phases to the number of typefaces
        SetMaxPhases(iNumTypefaces);
}

void CFontControl::UpdateModelL()
        {
        // set up zoom factor & graphics device map for getting fonts and drawing text
        iZoomFactor.SetGraphicsDeviceMap(iCoeEnv->ScreenDevice());
        iZoomFactor.SetZoomFactor(TZoomFactor::EZoomOneToOne);
        iDeviceMap = &iZoomFactor;

        // find the font to display this phase
        TTypefaceSupport* myTypefaceSupport = new TTypefaceSupport;
        iCoeEnv->ScreenDevice()->TypefaceSupport(*myTypefaceSupport,Phase());
        iCurrentFont = myTypefaceSupport->iTypeface.iName.Des();

        // set up descriptor for commentary area
        _LIT(KFormat,"Typeface index=%d. Name=%S. Num heights=%d. (Num typefaces=%d)");
        TBuf<128> commentaryText;
        commentaryText.Format(KFormat,Phase(),&iCurrentFont,myTypefaceSupport->iNumHeights,iNumTypefaces);
        iGraphObserver->NotifyStatus(commentaryText);
        delete myTypefaceSupport;
        };

void CFontControl::Draw(const TRect& /* aRect */) const
        {
        // setup screen for example
        CWindowGc& gc=SystemGc();
        gc.Clear();     
        
        // create a centered rectangle of the default size
        TRect screenRect=Rect();

        // set up absolute font-spec and text box for 300 twip font
        TFontSpec fontSpec(iCurrentFont,300);
        // find the nearest font to the specified one
        CFont* screenFont;                                                                              
        iDeviceMap->GetNearestFontInTwips(screenFont,fontSpec);
        // use it for this graphics context
        gc.UseFont(screenFont);

        // get height of screen box
    TInt screenHeight=screenRect.Height();
        // get font height
    TInt textHeight = screenFont->HeightInPixels();

        // set up the positioning of the character set rows
        TInt exampleMargin = 0;
        TInt currentOffset = ((screenHeight+textHeight)/2) - (TInt)(textHeight*2.4);

        // set up descriptors to hold Unicode characters 32 to 255
        TBuf<50> buffer;
        TInt endPoint[6] = {64,96,138,182,216,255};
        TInt count = 32;
        for(TInt pass=0;pass<=5;pass++) {
                while (count<=endPoint[pass]) {
                        buffer.Append((TUint)count);
                        count++;
                }
                // draw the row in the current font
                gc.DrawText(buffer,screenRect,currentOffset,CGraphicsContext::ECenter,exampleMargin);   
                currentOffset = currentOffset + (TInt)(textHeight*1.2);
                buffer.Zero();
        }

        // discard and release font
        gc.DiscardFont();
        iDeviceMap->ReleaseFont(screenFont);    
        }

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