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GetPut.b
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1994-11-11
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2KB
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81 lines
{*
** Simple copy and paste of rastport sections.
**
** This is _like_ BASIC's GET and PUT commands
** but less data is kept (ie. positional not bitmap
** data).
**
** Author: David J Benn
** Date: 10th-11th November 1994
*}
CONST default = -1&
LIBRARY "graphics.library"
DECLARE FUNCTION ClipBlit() LIBRARY graphics
STRUCT source_info
ADDRESS SrcRp
SHORTINT SrcX
SHORTINT SrcY
SHORTINT XSize
SHORTINT YSize
END STRUCT
SUB GetIt(x1&, y1&, x2&, y2&, ADDRESS info_addr)
DECLARE STRUCT source_info *info
{*
** Store data needed for PUT operation.
*}
info = info_addr
info->SrcRp = WINDOW(8) '..source rastport
info->SrcX = x1& '..left
info->SrcY = y1& '..top
info->XSize = ABS(x2&-x1&)+1 '..width
info->YSize = ABS(y2&-y1&)+1 '..height
END SUB
SUB PutIt(SHORTINT DestX, SHORTINT DestY, ADDRESS info_addr)
DECLARE STRUCT source_info *info
{*
** PUT image from source rastport to destination rastport.
*}
CONST Minterm = &HC0
ADDRESS DestRp
info = info_addr
DestRp = WINDOW(8)
ClipBlit(info->SrcRp, info->SrcX, info->SrcY, ~
DestRp, DestX, DestY, info->XSize, info->YSize, ~
Minterm)
END SUB
{* Main *}
DECLARE STRUCT source_info src
WINDOW 1,"Source",(0,0)-(320,150),2
LINE (10,10)-(125,125),2,b '..Draw a rectangle.
PAINT (100,100),1,2 '..Fill it.
GetIt(10,10,125,125,src) '..Prepare to copy it.
WINDOW 2,"Destination",(320,25)-(640,200),10
PutIt(20,20,src) '..Copy & paste from source
'..into current output window
'..with an x,y offset.
'..Wait for window 2's close gadget to be clicked.
GADGET WAIT 0
WINDOW CLOSE 2
WINDOW CLOSE 1
END