workbench/prefs/Editor/Utils.c

   1 /********************************************************************
   2 **** Utils.c: Some useful functions that doesn't change too much ****
   3 **** Free software under GNU license, started on 11/11/2000      ****
   4 **** © T.Pierron, C.Guillaume.                                   ****
   5 ********************************************************************/
   6
   7
   8 #include <intuition/intuition.h>
   9 #include <libraries/gadtools.h>
  10 #include <libraries/asl.h>
  11 #include <dos/dos.h>
  12
  13 #include <proto/exec.h>
  14 #include <proto/dos.h>
  15 #include <proto/graphics.h>
  16 #include <proto/diskfont.h>
  17 #include <proto/intuition.h>
  18 #include <proto/asl.h>
  19 #include <proto/gadtools.h>
  20
  21 #include <string.h>
  22 #include <stdlib.h>
  23
  24 #include "Jed.h"
  25 #include "JanoPrefs.h"
  26 #include "Sample.h"
  27
  28 #define CATCOMP_NUMBERS
  29 #include "../../tools/Edit/strings.h"
  30
  31 extern struct Window *Wnd;
  32 struct FileRequester *fr=NULL;
  33 static PREFS oldprefs;
  34
  35 void ThrowError(struct Window *W, UBYTE *Msg);
  36 void ThrowDOSError(struct Window *W, STRPTR Prefix, UBYTE err);
  37
  38 #define GetSI(gad)                      ((struct StringInfo *)gad->SpecialInfo)
  39
  40 /*** Convert number to dec ***/
  41 WORD AddNum(ULONG nb, STRPTR buf)
  42 {
  43         static UBYTE temp[10];
  44         UBYTE *dst;
  45         for(dst=temp+9; nb>=10; nb/=10)         /* Mouais :-\ */
  46                 *dst--= nb%10+'0';
  47         *dst=nb+'0';
  48         CopyMem(dst,buf,temp+10-dst);
  49         return (WORD)(temp+10-dst);
  50 }
  51
  52
  53 /*** Measure the maximal length of a NULL-terminated array of string: ***/
  54 WORD meas_table(UBYTE **strings)
  55 {
  56         extern struct RastPort RPT;
  57         register UBYTE **p;
  58         register WORD  maxlen,len;
  59
  60         for(p=strings, maxlen=0; *p; p++)
  61                 if(maxlen < (len=TextLength(&RPT,*p,strlen(*p)))) maxlen = len;
  62
  63         return maxlen;
  64 }
  65
  66 /*** Extract some information of a TextFont struct ***/
  67 void font_info(UBYTE *buf, struct TextFont *fnt)
  68 {
  69         UBYTE *name = fnt->tf_Message.mn_Node.ln_Name;
  70         UWORD size;
  71
  72         /* Fontname / Height */
  73         size = strlen(name)-5;          /* -".font" */
  74         CopyMem(name,buf,size); buf+=size;
  75         *buf++='/'; buf += AddNum(fnt->tf_YSize, buf);
  76         *buf = 0;
  77 }
  78
  79 /*** Same job with a (struct Screen *) ***/
  80 void scr_info(UBYTE *buf, WORD Width, WORD Height, WORD Depth)
  81 {
  82         /* Width x Height x Depth */
  83         buf += AddNum(Width,  buf); *buf++='x';
  84         buf += AddNum(Height, buf); *buf++='x';
  85         buf += AddNum(Depth,  buf); *buf=0;
  86 }
  87
  88 /*** Try to load an already loaded font ***/
  89 struct TextFont *get_old_font( STRPTR fmt )
  90 {
  91         static UBYTE FontName[50];
  92         STRPTR p;
  93         for(p=fmt; *p && *p!='/'; p++);
  94         if(*p == '/')
  95         {
  96                 struct TextAttr font;
  97                 CopyMem(fmt,FontName,p-fmt); strcpy(FontName+(p-fmt),".font");
  98                 font.ta_Name  = FontName;
  99                 font.ta_YSize = atoi(p+1);
 100                 font.ta_Style = FS_NORMAL;
 101                 font.ta_Flags = FPF_DISKFONT;
 102                 return (struct TextFont *)OpenDiskFont(&font);
 103         }
 104         return NULL;
 105 }
 106
 107 /*** Be sure a window fits in a screen ***/
 108 void fit_in_screen(struct NewWindow *wnd, struct Screen *scr)
 109 {
 110         /* Adjust left edge and width of window */
 111         if(wnd->LeftEdge + wnd->Width > scr->Width)
 112                 wnd->LeftEdge = scr->Width - wnd->Width;
 113
 114         if(wnd->LeftEdge < 0) wnd->LeftEdge=0, wnd->Width=scr->Width;
 115
 116         /* Adjust top edge and height */
 117         if(wnd->TopEdge + wnd->Height > scr->Height)
 118                 wnd->TopEdge = scr->Height - wnd->Height;
 119
 120         if(wnd->TopEdge < 0) wnd->TopEdge=0, wnd->Height=scr->Height;
 121 }
 122
 123
 124 /*** Performs some checks on what user has enterred ***/
 125 void check_tab(struct Gadget *str)
 126 {
 127         UBYTE *buf = GetSI(str)->Buffer, *start;
 128
 129         for(start=buf; *buf; buf++)
 130                 if(*buf < '0' || *buf > '9')
 131                 {
 132                         /* Wrong char, avert user */
 133                         GetSI(str)->BufferPos = buf-start;
 134                         DisplayBeep(NULL);
 135                         ActivateGadget(str, Wnd, NULL);
 136                         break;
 137                 }
 138 }
 139
 140 /*** Update gui components ***/
 141 void show_changes(PREFS *old, PREFS *new)
 142 {
 143         extern struct Gadget *gads[];
 144         extern struct Screen *Scr;
 145         extern UBYTE StrInfo[60],Modif[];
 146
 147         /* Tabulation */
 148         if(old->tabsize != new->tabsize)
 149         {
 150                 StrInfo[ AddNum(new->tabsize, StrInfo) ] = 0;
 151                 GT_SetGadgetAttrs(gads[0], Wnd, NULL, GTST_String, StrInfo, TAG_DONE);
 152         }
 153         GT_SetGadgetAttrs(gads[1], Wnd, NULL, GTST_String, new->wordssep, TAG_DONE);
 154         {
 155                 extern struct TagItem TextFontTags[], ScrFontTags[], ScrMdTags[];
 156                 extern ULONG extended;
 157
 158                 ScrFontTags[1].ti_Data = 0;
 159                 ScrMdTags[1].ti_Data = 0;
 160                 TextFontTags[1].ti_Data = 0; extended=0;
 161                 if( new->use_txtfont )
 162                         font_info(StrInfo, new->txtfont),
 163                         TextFontTags[0].ti_Data = (IPTR) FTCycTxt, extended |= 1;
 164                 else
 165                         TextFontTags[0].ti_Data = (IPTR) (FTCycTxt+1);
 166
 167                 if( new->use_scrfont )
 168                         font_info(StrInfo+20, new->scrfont),
 169                         ScrFontTags[0].ti_Data = (IPTR) FSCycTxt, extended |= 2;
 170                 else
 171                         ScrFontTags[0].ti_Data = (IPTR) (FSCycTxt+1);
 172
 173                 if( new->use_pub==1 )
 174                         scr_info(StrInfo+40,Scr->Width, Scr->Height, Scr->RastPort.BitMap->Depth),
 175                         ScrMdTags[0].ti_Data = (IPTR) ScrCycTxt, extended |= 4;
 176                 else {
 177                         ScrMdTags[0].ti_Data = (IPTR) (ScrCycTxt+1);
 178                         if(new->use_pub!=2) ScrMdTags[1].ti_Data = 1; /* Clone */
 179                 }
 180
 181                 /* Show changes */
 182                 GT_SetGadgetAttrsA(gads[2],Wnd,NULL,TextFontTags);
 183                 GT_SetGadgetAttrsA(gads[3],Wnd,NULL,ScrFontTags);
 184                 GT_SetGadgetAttrsA(gads[4],Wnd,NULL,ScrMdTags);
 185         }
 186         {
 187                 register int i, col;
 188                 for(i=0; i<CBS; i++)
 189                         GT_SetGadgetAttrs(gads[CGS+i], Wnd, NULL, GTCB_Checked, (&new->backdrop)[i], TAG_DONE);
 190
 191                 for(col=i=0; i<sizeof(new->pen); i++)
 192                         if( (&new->pen.bg)[i] != (&old->pen.bg)[i] ) col |= Modif[i];
 193
 194                 if(old->scrfont != new->scrfont) col |= EDIT_GUI;
 195                 if(old->txtfont != new->txtfont) col |= EDIT_AREA;
 196                 render_sample(Wnd, col);
 197         }
 198 }
 199
 200 /* ASL load or save requester tags: */
 201 static IPTR tags[] = {
 202         ASLFR_InitialLeftEdge,50,
 203         ASLFR_InitialTopEdge,50,
 204         ASLFR_InitialWidth,320,
 205         ASLFR_InitialHeight,256,
 206         ASLFR_Window,0,
 207         ASLFR_Flags1,0,
 208         ASLFR_SleepWindow,TRUE,
 209         ASLFR_InitialDrawer,(IPTR)"ENVARC:",
 210         ASLFR_InitialFile,0,
 211         ASLFR_InitialPattern,(IPTR)"#?",
 212         TAG_DONE
 213 };
 214
 215 static UBYTE TempPath[100];
 216 extern UBYTE Path[100];
 217
 218 /*** Save width and height of an ASL requester ***/
 219 void save_asl_dim(struct FileRequester *fr)
 220 {
 221         tags[1] = fr->fr_LeftEdge;
 222         tags[3] = fr->fr_TopEdge;
 223         tags[5] = fr->fr_Width;
 224         tags[7] = fr->fr_Height;
 225 }
 226
 227 /*** Ask user for a new preference file to load ***/
 228 void load_pref(PREFS *prefs)
 229 {
 230         if(fr==NULL && !(fr = (void *)AllocAslRequest(ASL_FileRequest,NULL)))
 231                 ThrowError(Wnd, ErrMsg(ERR_NOASLREQ));
 232         else
 233         {
 234                 tags[11] = FILF_PATGAD;
 235                 /* Save old preferences */
 236                 CopyMem(prefs, &oldprefs, sizeof(oldprefs));
 237                 if(AslRequest(fr, (struct TagItem *)tags))
 238                 {
 239                         UBYTE errcode;
 240                         save_asl_dim(fr);
 241                         CopyMem(Path,      TempPath, sizeof(Path));
 242                         CopyMem(fr->fr_Drawer, Path, sizeof(Path));
 243                         AddPart(Path,   fr->fr_File, sizeof(Path));
 244                         switch( errcode = load_prefs(prefs, Path) )
 245                         {
 246                                 case RETURN_OK:
 247                                         show_changes(&oldprefs, prefs),
 248                                         SetWindowTitles(Wnd, Path, (STRPTR)-1);
 249                                         return;
 250                                 case ERROR_OBJECT_WRONG_TYPE:
 251                                         ThrowError(Wnd, ErrMsg(ERR_BADPREFSFILE)); break;
 252                                 default: ThrowDOSError(Wnd, Path, errcode);
 253                         }
 254                         /* Restore previous path */
 255                         CopyMem(TempPath, Path, sizeof(Path));
 256                 }
 257         }
 258 }
 259
 260 /*** Ask user for a place to save the preference file ***/
 261 void save_pref_as(PREFS *prefs)
 262 {
 263         if(fr==NULL && !(fr = (void *)AllocAslRequest(ASL_FileRequest,NULL)))
 264                 ThrowError(Wnd, ErrMsg(ERR_NOASLREQ));
 265         else
 266         {
 267                 tags[11] = FILF_SAVE | FILF_PATGAD;
 268                 if(AslRequest(fr, (struct TagItem *)tags))
 269                 {
 270                         save_asl_dim(fr);
 271                         CopyMem(fr->fr_Drawer, Path, sizeof(Path));
 272                         AddPart(Path,   fr->fr_File, sizeof(Path));
 273                         save_prefs( prefs );
 274                         SetWindowTitles(Wnd, Path, (STRPTR)-1);
 275                 }
 276         }
 277 }
 278
 279 /*** Set default preference ***/
 280 void default_prefs(PREFS *prefs)
 281 {
 282         PREFS oldprefs;
 283
 284         CopyMem(prefs, &oldprefs, sizeof(oldprefs));
 285         set_default_prefs(prefs, prefs->parent);
 286         show_changes(&oldprefs, prefs);
 287 }
 288
 289 static char edit_file;
 290 static char buffer[ MAX(sizeof(Path),sizeof(prefs)) ];
 291
 292 /*** Save current configuration to restore it later if desired ***/
 293 void save_config( char ConfigFile )
 294 {
 295 /* CHECKME: = or ==? */
 296
 297         if ((edit_file = ConfigFile))
 298                 CopyMem(Path, buffer, sizeof(Path));
 299         else
 300                 CopyMem(&prefs, buffer, sizeof(prefs));
 301 }
 302
 303 /*** Restore config ***/
 304 void restore_config(PREFS *prefs)
 305 {
 306         PREFS oldprefs;
 307         CopyMem(prefs, &oldprefs, sizeof(oldprefs));
 308         if( edit_file == 0 )
 309         {
 310                 /* The preferences come from Jano */
 311                 CopyMem(buffer, prefs, sizeof(*prefs));
 312         }
 313         else
 314         {
 315                 /* We have edited a static file */
 316                 if( load_prefs(prefs, buffer) == RETURN_OK )
 317                         SetWindowTitles(Wnd, Path, (STRPTR)-1);
 318                 else
 319                         set_default_prefs(prefs, prefs->parent);
 320         }
 321         show_changes(&oldprefs, prefs);
 322 }
 323
 324 void free_asl( void ) { FreeAslRequest( fr ); }