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Subject:
banner application
From: sai baba ####@####.#### Date: 20 Jan 2006 05:37:25 +0000 Message-Id: <20060120053718.82883.qmail@web35904.mail.mud.yahoo.com> hi I am writing a program in nanox which moves *.bmp image files as scrolls on screen. if there are more then one image files i am joining them by copying one after the other on an offscreen buffer. This buffer is moved on screen using function GrcopyArea.The problem i am facing is if number of image files increases large amount of offscreen buffer is required.is there any better way to implement this program. By the by i am using Uclinux on ARM board. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Subject:
Re: [nanogui] banner application
From: "Greg Haerr" ####@####.#### Date: 20 Jan 2006 05:55:08 +0000 Message-Id: <0f3701c61d85$f03a0d30$6401a8c0@winXP> : The problem i am facing is : if number of image files increases large amount of : offscreen buffer is : required.is there any better way to implement this : program. Well - you only need two offscreen buffers in order to display any number of images. The two images that are cut-off on the left and right sides of the window need to be buffered, and portions GrCopyArea'd to the window as required. Any images in the middle (in the case of more than two displayed images) can be decoded directly onto the window. Whenever an image completely scrolls off the screen, its buffer can be deallocated. When a new images scrolls on the right side, a new buffer is allocated. Regards, Greg | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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