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FishMarket 1.0
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FishMarket v1.0.iso
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disk_005
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text.demo
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text.demo.c
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C/C++ Source or Header
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1992-05-06
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11KB
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325 lines
/*
*
* DISCLAIMER:
*
* This program is provided as a service to the programmer
* community to demonstrate one or more features of the Amiga
* personal computer. These code samples may be freely used
* for commercial or noncommercial purposes.
*
* Commodore Electronics, Ltd ("Commodore") makes no
* warranties, either expressed or implied, with respect
* to the program described herein, its quality, performance,
* merchantability, or fitness for any particular purpose.
* This program is provided "as is" and the entire risk
* as to its quality and performance is with the user.
* Should the program prove defective following its
* purchase, the user (and not the creator of the program,
* Commodore, their distributors or their retailers)
* assumes the entire cost of all necessary damages. In
* no event will Commodore be liable for direct, indirect,
* incidental or consequential damages resulting from any
* defect in the program even if it has been advised of the
* possibility of such damages. Some laws do not allow
* the exclusion or limitation of implied warranties or
* liabilities for incidental or consequential damages,
* so the above limitation or exclusion may not apply.
*
*/
/* text.demo.c */
/* sample program that asks AvailFonts() to make a list of the fonts
* that are available and makes a list of them, then opens a separate
* window and prints a description of the various attributes that can
* be applied to the fonts, in the font itself. Notice that not all
* fonts accept all attributes (garnet9 for example, won't underline)
*
* Also note, if you run this, that not all fonts are as easily readable
* in the various bold and italicized modes.... this rendering is done
* in a fixed manner by software and the fonts were not necessarily
* designed to accept it. It is always best to have a font that has
* been designed with a bold or italic characteristic built-in rather
* than try to bold-ize or italicize and existing plain font.
*
* Author: Rob Peck, 12/1/85
*
* This code may be freely utilized to create programs for the Amiga
*/
#define AFTABLESIZE 2000
#include "exec/types.h"
#include "exec/io.h"
#include "exec/memory.h"
#include "graphics/gfx.h"
#include "hardware/dmabits.h"
#include "hardware/custom.h"
#include "hardware/blit.h"
#include "graphics/gfxmacros.h"
#include "graphics/copper.h"
#include "graphics/view.h"
#include "graphics/gels.h"
#include "graphics/regions.h"
#include "graphics/clip.h"
#include "exec/exec.h"
#include "graphics/text.h"
#include "graphics/gfxbase.h"
#include "devices/keymap.h"
#include "libraries/dos.h"
#include "graphics/text.h"
#include "libraries/diskfont.h"
#include "intuition/intuition.h"
struct AvailFonts *af;
struct AvailFontsHeader *afh;
extern int AvailFonts();
struct TextFont *tf;
struct TextAttr ta;
ULONG DosBase;
ULONG DiskfontBase;
ULONG IntuitionBase;
ULONG GfxBase;
struct NewWindow nw = {
10, 10, /* starting position (left,top) */
620,40, /* width, height */
-1,-1, /* detailpen, blockpen */
0, /* flags for idcmp */
WINDOWDEPTH|WINDOWSIZING|WINDOWDRAG|SIMPLE_REFRESH|ACTIVATE|GIMMEZEROZERO,
/* window gadget flags */
0, /* pointer to 1st user gadget */
NULL, /* pointer to user check */
"Text Font Test", /* title */
NULL, /* pointer to window screen */
NULL, /* pointer to super bitmap */
100,45, /* min width, height */
640,200, /* max width, height */
WBENCHSCREEN};
struct Window *w;
struct RastPort *rp;
SHORT text_styles[ ] = { FS_NORMAL, FSF_UNDERLINED, FSF_ITALIC, FSF_BOLD,
FSF_ITALIC | FSF_BOLD, FSF_BOLD | FSF_UNDERLINED,
FSF_ITALIC | FSF_BOLD | FSF_UNDERLINED };
char *text[ ] = { " Normal Text", " Underlined", " Italicized", " Bold",
" Bold Italics", " Bold Underlined",
" Bold Italic Underlined" };
char textlength[ ] = { 12, 11, 11, 5, 13, 16, 23 };
char *pointsize[] = { " 0"," 1"," 2"," 3"," 4"," 5"," 6"," 7"," 8"," 9",
"10","11","12","13","14","15","16","17","18","19",
"20","21","22","23","24","25","26","27","28","29",
"30","31"};
char fontname[40];
char dummy[100]; /* provided for string length calculation */
char outst[100]; /* build something to give to Text, see note in
* the program body about algorithmically
* generated styles
*/
main()
{
UBYTE fonttypes;
int j,k,m;
SHORT afsize;
SHORT style;
SHORT sEnd; /* numerical position of end of string terminator,
* and coincidently the length of the string. */
if( (DosBase = OpenLibrary("dos.library", 0)) == NULL) exit(-1);
if((DiskfontBase=OpenLibrary("diskfont.library",0))==NULL) exit(-4);
if((IntuitionBase=OpenLibrary("intuition.library",0))==NULL) exit(-2);
if((GfxBase=OpenLibrary("graphics.library",0))==NULL) exit(-3);
tf=NULL; /* no font currently selected */
afsize = AFTABLESIZE; /* show how large a buffer is available */
fonttypes = 0xff; /* show us all font types */
afh = (struct AvailFontsHeader *) AllocMem(afsize, MEMF_CLEAR);
if(afh == NULL) exit(-5);
printf("\nSearching for Fonts\n");
AvailFonts(afh, afsize, fonttypes);
af = (struct AvailFonts *) &afh[1]; /* bypass header to get to the
* first of the availfonts */
for (j = 0; j < afh->afh_NumEntries; j++)
{
if((af->af_Attr.ta_Flags & FPF_REMOVED) ||
(af->af_Attr.ta_Flags & FPF_REVPATH) ||
((af->af_Type&AFF_MEMORY)&&
(af->af_Attr.ta_Flags&FPF_DISKFONT)))
; /* do nothing if font is removed, or if
* font designed to be rendered rt->left
* (simple example writes left to right)
* or if font both on disk and in ram,
* don't list it twice. */
/* AvailFonts performs an AddFont to the system list;
* if run twice, you get two entries, one of "af_Type 1" saying
* that the font is memory resident, and the other of "af_Type 2"
* saying the font is disk-based. The third part of the
* if-statement lets you tell them apart if you are scanning
* the list for unique elements; it says "if its in memory and
* it is from disk, then don't list it because you'll find another
* entry in the table that says it is not in memory, but is on disk.
* (Another task might have been using the font as well, creating
* the same effect).
*/
else
{
printf("\nFont name found was: %ls",af->af_Attr.ta_Name);
printf(" and its point size is: %ld",af->af_Attr.ta_YSize);
/* Style parameter is in af->af_Attr.ta_Style,
* Flags parameter is in af->af_Attr.ta_Flags.
*/
}
af++;
}
/* now that we've listed the fonts, lets look at them */
w = (struct Window *)OpenWindow(&nw);
rp = w->RPort;
for(m=0; m<2; m++) /* do normal video, then inverse video */
{
af = (struct AvailFonts *)&afh[1]; /* reset value of af to original */
SetAPen(rp,1);
if(m == 0)SetDrMd(rp,JAM1);
else SetDrMd(rp,JAM1+INVERSVID);
/* now print a line that says what font and what style it is */
for (j=0; j < afh->afh_NumEntries; j++)
{
CStringAppend(&fontname[0],af->af_Attr.ta_Name);
/* copy name into build-name area */
/* already has ".font" onto end of it */
ta.ta_Name = &fontname[0];
ta.ta_YSize = af->af_Attr.ta_YSize; /* ask for this size */
ta.ta_Style = af->af_Attr.ta_Style; /* ask for designed style */
ta.ta_Flags = FPF_ROMFONT|FPF_DISKFONT|FPF_PROPORTIONAL|FPF_DESIGNED;
/* accept it from anywhere it exists */
style = ta.ta_Style;
if(!((af->af_Attr.ta_Flags & FPF_REMOVED) ||
(af->af_Attr.ta_Flags & FPF_REVPATH) ||
((af->af_Type&AFF_MEMORY)&&
(af->af_Attr.ta_Flags&FPF_DISKFONT))))
/* this is an IF-NOT, the reverse of the earlier if-test on
* these same parameters
*/
{
tf = (struct TextFont *) OpenDiskFont(&ta);
if (tf != 0)
{
SetFont(w->RPort, tf);
for(k=0; k<7; k++)
{
style = text_styles[k];
SetSoftStyle(w->RPort,style,255);
SetRast(rp,0); /* erase any previous text */
Move(rp,10,20); /* move down a bit from the top */
sEnd = CStringAppend(&outst[0],af->af_Attr.ta_Name);
sEnd = sEnd + CStringAppend(&outst[sEnd]," ");
sEnd = sEnd + CStringAppend(&outst[sEnd],
pointsize[af->af_Attr.ta_YSize]);
sEnd = sEnd + CStringAppend(&outst[sEnd]," Points, ");
CStringAppend(&outst[sEnd],text[k]);
Text(rp,&outst[0],CStringAppend(&dummy[0],&outst[0]));
/* Have to build the string before sending it out to
* text IF ALGORITHMICALLY GENERATING THE STYLE since
* the kerning and spacing tables are based on the
* vanilla text, and not the algorithmically generated
* style. If you send characters out individually,
* it is possible that the enclosing rectangle of
* a later character will chop off the trailing edge
* of a preceding character
*/
/* **************************************************
This alternate method, when in INVERSVID, exhibits the
problem described above.
Text(rp,af->af_Attr.ta_Name,STRLEN(af->af_Attr.ta_Name));
Text(rp," ",2);
Text(rp,pointsize[af->af_Attr.ta_YSize],2);
Text(rp," Points, ",9);
Text(rp,text[k],textlength[k]);
************************************************** */
Delay(40); /* use the DOS time delay function
* specifies 60ths of a second */
}
CloseFont(tf); /* close the old one */
/* NOTE:
* Even though you close a font, it doesn't get unloaded
* Memory unless a font with a different name is specified
* for loading. In this case, any font (except the topaz
* set) which has been closed can have its memory area
* freed and it will no longer be accessible. If you close
* a font to go to a different point-size, it will NOT cause
* a disk-access.
*
* ALSO NOTE:
* Loading a font loads ALL of the point
* sizes contained in that font's directory!!!!
*/
} /* end of if-tf-ne-0 */
} /* end of if-(in memory but from disk) */
af++;
} /* Do next font now */
} /* end of for-loop, controlled by m */
FreeMem(afh,AFTABLESIZE);
CloseWindow(w);
CloseLibrary(IntuitionBase);
CloseLibrary(DosBase);
CloseLibrary(DiskfontBase);
CloseLibrary(GfxBase);
}
/* copy a string and return the number of characters added to
* a string. Effectively returns the length of the string if
* not adding anything */
int CStringAppend(dest, source)
char *dest;
char *source;
{
int i=0;
char *s = source;
char *d = dest;
while (( i <79 )&&( *d = *s )) { d++; s++; i++; }
/* if find a NULL in source, end the copy, but the NULL itself
* gets copied over to the destination. If no NULL, then 79
* characters get copied, then a terminating NULL is added */
if(i < 79) return(i);
else {*d = 0; return(i); }
/* value returned is the position of the terminating NULL
* to allow other strings to be appended simply using the
* next append command in sequence */
}