William Poetra Yoga H wrote:
Use GdiGradientFill (not GradientFill) to implement gradient caption bar (for now).
GradientFill is pretty slow, as it files the rectangle line by line. I'm not sure how much this is going to slow down a normal application. It used to draw pixel by pixel, and that was a very noticable slowdown... line by line is much faster than that, but it still may cause a slowdown in some circumstances.
Anybody have any ideas about how to speed up GradientFill?
Mike
Mike McCormack wrote:
William Poetra Yoga H wrote:
Use GdiGradientFill (not GradientFill) to implement gradient caption bar (for now).
GradientFill is pretty slow, as it files the rectangle line by line. I'm not sure how much this is going to slow down a normal application. It used to draw pixel by pixel, and that was a very noticable slowdown... line by line is much faster than that, but it still may cause a slowdown in some circumstances.
Anybody have any ideas about how to speed up GradientFill?
How many colors are typically drawn across a single bar? If this number is significantly less than the number of vertical lines, you can precalculate the width of each color bar, and draw a series of boxes.
Mike
Shachar
--- Shachar Shemesh wine-devel@shemesh.biz wrote:
Mike McCormack wrote:
GradientFill is pretty slow, as it files the rectangle line by line. I'm not sure how much this is going to slow down a normal application. It used to draw pixel by pixel, and that was a very noticable slowdown... line by line is much faster than that, but it still may cause a slowdown in some circumstances.
Anybody have any ideas about how to speed up GradientFill?
I think it's fast enough; I don't see a slowdown at all on my machine (Pentium III Celeron 1.0GHz, SiS 630, 128MB RAM).
How many colors are typically drawn across a single bar? If this number is significantly less than the number of vertical lines, you can precalculate the width of each color bar, and draw a series of boxes.
From a screenshot I take in Windows XP, either there's actually no rule
regarding the number of colors, or the number of colors is random. I found no easily-figured out pattern, each color is drawn 1 line to four lines, and it looks random to me. Maybe a mathematician can find out the pattern, but I think using GdiGradientFill is good enough. Maybe even Microsoft implemented it the same way too.
I'll resend the patch.
Mike
Shachar
William
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Mike McCormack -
Shachar Shemesh -
William Poetra Yoga H