On Friday 21 February 2014 22:56:03 misu kun wrote:
> Hi Martin
> dose msegui support images format like png , jpg , if so , whats the
> fast way to load images on timage component ?
>
At designtime click on the ... button in objectinspector in 'bitmap' row.
At runtime use <timage>.bitmap.readfromfile(), add the necessary
lib/common/image/mseformat*read units to uses. They use the Free Pascal
fpimage functions which are known to be slow. It is planned to replace them
by a faster image library.
> another thing , are there some thing like ScanLine property so i can
> access image data in a faster way .
>
In tbitmap:
"
procedure savetoimage(out aimage: imagety);
procedure loadfromimage(const aimage: imagety);
property pixel[const index: pointty]: colorty read getpixel
write setpixel;
property pixels[const x,y: integer]: colorty read getpixels
write setpixels;
property scanline[index: integer]: pointer read getscanline;
function scanhigh: integer; //max index in scanline[0]
"
imagety is
"
imagety = record
monochrome: boolean;
bgr: boolean;
size: sizety;
length: integer; //number of longword
pixels: plongwordaty;
end;
"
In tmaskedbitmap:
"
class procedure freeimageinfo(var ainfo: imagebufferinfoty);
procedure loadfromimagebuffer(const abuffer: imagebufferinfoty);
procedure savetoimagebuffer(out abuffer: imagebufferinfoty);
"
imagebufferinfoty is
"
imagebufferinfoty = record
image: imagety;
mask: imagety;
end;
"
If you need to create image pixelbuffer yourself use gui_allocimagemem() and
gui_freeimagemem().
Martin
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