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  1. #1
    Registered User
    Join Date
    Jan 2005
    Posts
    8

    display masked AND scaled bitmaps

    hi all

    i'm doing my first steps in symbian-programming for SX1.

    is it possible to display bitmaps which are masked AND scaled?


    i only found:
    BitBlt - to draw unscaled and unmasked bitmaps
    BitBltMasked - to draw masked bitmaps
    DrawBitmap - to draw scaled bitmaps


    is there any function or workaround to draw a masked bitmap every frame in a new size?

    thx in advance!
    mugi

  2. #2
    Nokia Developer Moderator
    Join Date
    Mar 2003
    Location
    Lempäälä/Finland
    Posts
    29,168
    Nope, only way to do it is to scale the image & mask before drawing them.

    Anyway, was just looking into SDK docs for CPAlbBitmap and its GetAnimFrameWithMaskL()- function. it seems that it might be able to scale the images & masks during loading them. I never tried scaling on this class, but I think it could be worth of trying anyway.

    yucca

  3. #3
    Registered User
    Join Date
    Jan 2005
    Posts
    8
    thx yucca!

    i have to scale the masked images in every frame of an animation ... so i think i'll have to do it as you sai in two steps ...

    right now i made two offscreen bitmaps. on the first one i draw the correctly scaled bitmaps with DrawBitmap.
    on the second one i draw all the masks withe the according position and scale.
    after that i draw the two offscreen bitmaps to the display with BitBltMasked.

    that works ... but its slow

    any better approaches?

    but thx for your help so far!!

    greetz
    mugi
    Last edited by michael.schrenk; 2005-01-13 at 15:15.

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