fontsandtexteffectscontainer.cpp

来自「series60 应用程序开发的源代码 series60 应用程序开发的源代码」· C++ 代码 · 共 154 行

/**
 * 
 * @brief Definition of CFontsAndTextEffectsContainer
 *
 * Copyright (c) EMCC Software Ltd 2003
 * @version 1.0
 */

// INCLUDE FILES

// Class includes
#include "FontsAndTextEffectsContainer.h"

// System includes
#include <eikenv.h>            // CEikonEnv iEikonEnv and AKN_LAF_COLOR
#include <fontsandtext.rsg>    // R_FONTSANDTEXT_LOCALIZATION_TEXT
#include <StringLoader.h>    // StringLoader

// CONSTANTS
const TInt KTextMaxLength = 50;
const TInt KLeftTextHorizAlign = 10;
const TInt KLeftTextVertAlign = 7;
const TReal KRightTextHorizAlign = 0.95;
const TReal KRightTextVertAlign =  0.9;
const TInt KMiddleTextOneHorizAlign = 4;
const TInt KMiddleTextOneVertAlign = 3;
const TInt KMiddleTextTwoVertAlign = 2;
const TReal KMiddleTextThreeVertAlign = 1.5;

const TInt KColorBlue = 210;
const TInt KColorRed = 35;
const TInt KColorGreen = 185;


// ================= MEMBER FUNCTIONS =======================

/**
 * Symbian OS 2 phase constructor.
 * Constructs the CFontsAndTextEffectsContainer using the NewLC method, popping
 * the constructed object from the CleanupStack before returning it.
 * 
 * @param aRect The rectangle for this window
 * @return The newly constructed CFontsAndTextEffectsContainer
 */
CFontsAndTextEffectsContainer* CFontsAndTextEffectsContainer::NewL(const TRect& aRect)
{
    CFontsAndTextEffectsContainer* self = CFontsAndTextEffectsContainer::NewLC(aRect);
    CleanupStack::Pop(self);
    return self;
}

/**
 * Symbian OS 2 phase constructor.
 * Constructs the CFontsAndTextEffectsContainer using the constructor and ConstructL 
 * method, leaving the constructed object on the CleanupStack before returning it.
 * 
 * @param aRect The rectangle for this window
 * @return The newly constructed CFontsAndTextEffectsContainer
 */
CFontsAndTextEffectsContainer* CFontsAndTextEffectsContainer::NewLC(const TRect& aRect)
{
    CFontsAndTextEffectsContainer* self = new (ELeave) CFontsAndTextEffectsContainer();
    CleanupStack::PushL(self);
    self->ConstructL(aRect);
    return self;
}

/**
 * Symbian OS 2nd phase constructor.  Creates a Window for the control to draw to.
 * Activates the control
 * @param aRect The rectangle for this window
 */ 
void CFontsAndTextEffectsContainer::ConstructL(const TRect& aRect)
{
    CreateWindowL();
    SetRect(aRect);
    ActivateL();
}

/**
 * Destructor.
 */
CFontsAndTextEffectsContainer::~CFontsAndTextEffectsContainer()
{    
}

/**
 * This draw function illustrates many of the effects that can be applied
 * to text when drawing it. Examples include underlining, strikethrough and vertically
 * oriented text.
 *
 * @param aRect The rectangular area to be drawn to
 */
void CFontsAndTextEffectsContainer::Draw(const TRect& aRect) const
{
    // Clear the graphics context.
    CWindowGc& gc = SystemGc();
    gc.Clear();    

    // Setup some colours.
    TRgb colorBlue = AKN_LAF_COLOR(KColorBlue);
    TRgb colorRed = AKN_LAF_COLOR(KColorRed);
    TRgb colorGreen = AKN_LAF_COLOR(KColorGreen);

    // Use resource architecture to obtain localizable string
    TBuf<KTextMaxLength> text;
    StringLoader::Load(text, R_FONTSANDTEXT_LOCALIZATION_TEXT);
    
    // Draw black vertical text in title font.
    const CFont* font = iEikonEnv->TitleFont();
    TPoint textPoint(aRect.Width() / KLeftTextHorizAlign, aRect.Height() / KLeftTextVertAlign);
    gc.UseFont(font);
    gc.SetPenColor(KRgbBlack);
    gc.DrawTextVertical(text, textPoint, EFalse);
    gc.DiscardFont();
    
    // Draw black vertical text in annotation font.
    font = iEikonEnv->AnnotationFont();
    textPoint.SetXY((TInt)(aRect.Width() * KRightTextHorizAlign), (TInt)(aRect.Height() * KRightTextVertAlign));
    gc.UseFont(font);
    gc.DrawTextVertical(text, textPoint, ETrue);
    gc.DiscardFont();
    
    // Draw green strikethrough text in symbol font
    font = iEikonEnv->SymbolFont();
    textPoint.SetXY(aRect.Width() / KMiddleTextOneHorizAlign, aRect.Height() / KMiddleTextOneVertAlign);
    gc.UseFont(font);
    gc.SetPenColor(colorGreen);
    gc.SetStrikethroughStyle(EStrikethroughOn);
    gc.DrawText(text, textPoint);
    gc.SetStrikethroughStyle(EStrikethroughOff);
    gc.DiscardFont();

    // Draw blue underlined text in legend font
    font = iEikonEnv->LegendFont();
    textPoint.iY = (aRect.Height() / KMiddleTextTwoVertAlign);
    gc.UseFont(font);
    gc.SetPenColor(colorBlue);
    gc.SetUnderlineStyle(EUnderlineOn);
    gc.DrawText(text, textPoint);
    gc.SetUnderlineStyle(EUnderlineOff);
    gc.DiscardFont();

    // Draw red text in dense font.
    font = iEikonEnv->DenseFont();
    textPoint.iY = (TInt)(aRect.Height() / KMiddleTextThreeVertAlign);
    gc.UseFont(font);
    gc.SetPenColor(colorRed);
    gc.DrawText(text, textPoint);    
    gc.DiscardFont();
}

// End of File