Categories: Code Examples | How To | S60 | Symbian C++ | Graphics | Optimization
This page was last modified 22:09, 13 December 2007.
Efficient way of Loading Bitmap and Mask in S60
From Forum Nokia Wiki
_LIT(KYourMifFile, “resource\\apps\\yourmif.mif”);
//yourmif.mif contains svgs
include <yourmif.mbg> in .cpp file
// In header file
CFbsBitmap* iFocusBitmap; CFbsBitmap* iBitmapMask;
// anywhere in .cpp file
if(iFocusBitmap == NULL)
{
// load the image and mask
AknIconUtils::CreateIconL( iFocusBitmap,
iBitmapMask,
KYourMifFile,
EMbmYourMif_focus,
EMbmYourMif_mask );
}
TSize size(Rect().Width()*10/100,Rect().Height()*10/100);
AknIconUtils::SetSize(iFocusBitmap,size,EAspectRatioNotPreserved);
AknIconUtils::SetSize(iBitmapMask,size,EAspectRatioNotPreserved );
// In the destructor
<code>
delete iFocusBitmap;
delete iBitmapMask;
AknIconUtils::SetSize initializes the icon to the given size, if the parameter aBitmap is an instance of CAknBitmap, i.e.created with AknIconUtils methods. If it is not CAknBitmap, this method does nothing. Note that this call sets the sizes of both bitmap and mask (if it exists), regardless of which is given as the parameter. Note Without a call to SetSize Bitmap will not be drawn and seen on the screen
Although CreateIconL have overloaded method for creating only the single bitmap rather than its mask but this has been more efficient interms of size and loading
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