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ICONS.TXT
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1991-08-16
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ICONS
-------------------------------------------------------------------
Icons are a special kind of image that are drawn as they are used, they
are not stored as bit images.
Icons are created with the ICON Editor. The ICON editor is included
with the TEGL Windows Toolkit but is not included with the Intro Paks.
PutPict(x,y: Word; Icon: Pointer; Color: Word);
PutPict is the routine that draws an icon. The x,y parameters are the
screen location to draw at. Icon points to a valid icon image, there
is no checking done to see if the icon is a correct image. Color is
the color that BLACK in the icon will be replaced with.
PutPict is NOT viewport relative and is never clipped.
These are all the icons in teglicon.tpu and moreicon.tpu. Note that
the actual name to refer to an icon is image<iconname>.
ARROWDN ARROWLF ARROWRT ARROWUP
BAR BELL BELL2 BLANKBUT
BULB C CANCEL CHK7X6
CHK8X10 CHK8X12 CHK8X8 CLOCK
COMPUTER CORNER CORNER2 CORNER3
CREDITS DISK DISK35 DISKDRV
DOCUMENT DOWN DRAWER FILE
FIND KEYBOARD KEYBRD2 LAST
LBUT LEFT MBUT MC
MONITOR MOUSE MOUSE2 MUSIC
MUSIC2 NEXT NOTE NOTE2
OK PREV PRINTER QUESTN2
R RBUT READ RESIZE
RIGHT SLIDER SLIDER2 STOPSIGN
SUBMENU SYSTEM TIGER TINYTEGL
TRASH UP VS WFDN
WFUP WFICON WFLF WFRT
WFUD WFBAR WRITE WFMDN
This example simply create a frame a sticks an icon on it.
Note that we use the x and y coordiates from the ImageStkPtr
to place the iconimage.
BEGINFILE> icon1.pas
{-- icon1.pas}
USES
teglicon, moreicon,
tgraph, fastgrph,
teglunit, teglmain;
VAR ifs: ImageStkPtr;
BEGIN
easytegl;
easyout;
quickframe(ifs,100,100,110,100);
{-- use the frames x and y fields to draw the icon }
{-- in a relative position }
putpict(ifs^.x+10,ifs^.y+10,@imageSystem,BLACK);
teglsupervisor;
END.
ENDFILE>
PictSize(VAR width,height: Word; Icon: Pointer);
This function returns the size of an icon in pixels. Icon is the
icon that we are interrogating. Width and Height return the
respective x and y dimentions of the icon.
This next example shows a routine that draws an icon relative to
a frame and won't write outside the frame boundaries.
BEGINFILE> icon2.pas
{-- icon2.pas}
USES
teglicon, moreicon,
tgraph, fastgrph,
teglunit, teglmain;
{-- draw an icon image relative to a frame, do not draw it if }
{-- it writes outside the frame }
Procedure PutPictRel(ifs: ImageStkPtr;
x,y: Word; Icon: Pointer; Color: Word);
VAR dx,dy : Word;
fmaxx,fmaxy : Word;
BEGIN
PictSize(dx,dy,icon);
fmaxx := ifs^.x1 - ifs^.x + 1;
fmaxy := ifs^.y1 - ifs^.y + 1;
{-- check to see the icon will fit }
if ((x + dx) > fmaxx) OR ((y + dy) > fmaxy) THEN exit;
putpict(ifs^.x+x,ifs^.y+y,icon,color);
END;
VAR ifs: ImageStkPtr;
BEGIN
easytegl;
easyout;
quickframe(ifs,100,100,110,100);
{-- use the frames x and y fields to draw the icon }
{-- in a relative position }
putpictRel(ifs,10,10,@imageSystem,BLACK);
teglsupervisor;
END.
ENDFILE>
----------------------------------------------------------------------
END ICONS