workbench/demos/dto.c

   1 /******************************************************************************
   2  *
   3  * COPYRIGHT: Unless otherwise noted, all files are Copyright (c) 1992-1999
   4  * Amiga, Inc.  All rights reserved.
   5  *
   6  * DISCLAIMER: This software is provided "as is".  No representations or
   7  * warranties are made with respect to the accuracy, reliability, performance,
   8  * currentness, or operation of this software, and all use is at your own risk.
   9  * Neither Amiga nor the authors assume any responsibility or liability
  10  * whatsoever with respect to your use of this software.
  11  *
  12  ******************************************************************************
  13  * dto.c
  14  * How to embed a DataType object within an Intuition window
  15  * Written by David N. Junod
  16  *
  17  */
  18
  19 #include <exec/types.h>
  20 #include <exec/memory.h>
  21 #include <exec/libraries.h>
  22 #include <dos/dos.h>
  23 #include <dos/rdargs.h>
  24 #include <datatypes/datatypes.h>
  25 #include <datatypes/datatypesclass.h>
  26 #include <datatypes/pictureclass.h>
  27 #include <intuition/intuition.h>
  28 #include <intuition/icclass.h>
  29 #include <graphics/gfx.h>
  30 #include <graphics/displayinfo.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdio.h>
  34
  35 #include <proto/alib.h>
  36 #include <proto/datatypes.h>
  37 #include <proto/dos.h>
  38 #include <proto/exec.h>
  39 #include <proto/graphics.h>
  40 #include <proto/intuition.h>
  41 #include <proto/utility.h>
  42
  43 /*****************************************************************************/
  44
  45
  46 struct IntuitionBase *IntuitionBase;
  47 struct GfxBase *GfxBase;
  48 struct UtilityBase *UtilityBase;
  49 struct Library *DataTypesBase;
  50
  51 /*****************************************************************************/
  52
  53 #define TEMPLATE        "NAME/A"
  54 #define OPT_NAME        0
  55 #define NUM_OPTS        1
  56
  57 /*****************************************************************************/
  58
  59 #define IDCMP_FLAGS     IDCMP_CLOSEWINDOW | IDCMP_VANILLAKEY | IDCMP_IDCMPUPDATE
  60
  61 /*****************************************************************************/
  62
  63 void PrintErrorMsg (ULONG errnum, STRPTR name)
  64 {
  65     UBYTE errbuff[80];
  66
  67     if (errnum >= DTERROR_UNKNOWN_DATATYPE)
  68         sprintf (errbuff, GetDTString (errnum), name);
  69     else
  70         Fault (errnum, NULL, errbuff, sizeof (errbuff));
  71
  72     printf ("%s\nerror #%ld\n", errbuff, (long)errnum);
  73 }
  74
  75 /*****************************************************************************/
  76
  77 int main (int argc, char **argv)
  78 {
  79     Object *dto;
  80     STRPTR name;
  81
  82     ULONG modeid = INVALID_ID;
  83     ULONG nomwidth, nomheight;
  84     BOOL useScreen = FALSE;
  85     struct dtFrameBox dtf;
  86     struct FrameInfo fri;
  87     struct Screen *scr;
  88     struct Window *win;
  89     BOOL going = TRUE;
  90
  91     struct IntuiMessage *imsg;
  92     ULONG sigr;
  93
  94     const struct TagItem *tstate;
  95     struct TagItem *tag;
  96     struct TagItem *tags;
  97     ULONG tidata;
  98     ULONG errnum;
  99
 100     IPTR options[NUM_OPTS];
 101     struct RDArgs *rdargs;
 102
 103     /* Parse the arguments.  Note that this simple example assumes
 104      * that it was started from the shell. */
 105     memset (options, 0, sizeof (options));
 106     if ((rdargs = ReadArgs (TEMPLATE, options, NULL)))
 107     {
 108         /* Open DataTypes */
 109         if ((DataTypesBase = OpenLibrary ("datatypes.library", 39)))
 110         {
 111             /* Open the other libraries */
 112             IntuitionBase = (struct IntuitionBase *)OpenLibrary ("intuition.library", 39);
 113             GfxBase = (struct GfxBase *)OpenLibrary ("graphics.library", 39);
 114             UtilityBase = (struct UtilityBase *)OpenLibrary ("utility.library", 39);
 115
 116             /* Get a DataType object */
 117             if ((dto = NewDTObject ((APTR) options[OPT_NAME], TAG_DONE, TAG_DONE)))
 118             {
 119                 /* Get information about the object */
 120                 if (GetDTAttrs (dto,
 121                                 /* Get the name of the object */
 122                                 DTA_ObjName,            (IPTR) &name,
 123
 124                                 /* Get the desired size */
 125                                 DTA_NominalHoriz,       (IPTR) &nomwidth,
 126                                 DTA_NominalVert,        (IPTR) &nomheight,
 127
 128                                 /* Get the mode ID for graphical objects */
 129                                 PDTA_ModeID,            (IPTR) &modeid,
 130                                 TAG_DONE))
 131                 {
 132
 133                     /* Display any information we obtained */
 134                     if (name)
 135                         printf ("opened \"%s\"\n", name);
 136
 137                     /* Show the mode ID */
 138                     printf ("mode ID %08lx\n", (unsigned long)modeid);
 139
 140                     /* Display the nominal size */
 141                     printf ("nominal width %ld, height %ld\n", (long)nomwidth, (long)nomheight);
 142                 }
 143
 144                 /* Ask the object what kind of environment it needs */
 145                 memset (&dtf, 0, sizeof (struct dtFrameBox));
 146                 memset (&fri, 0, sizeof (struct FrameInfo));
 147                 dtf.MethodID = DTM_FRAMEBOX;
 148                 dtf.dtf_FrameInfo = &fri;
 149                 dtf.dtf_ContentsInfo = &fri;
 150                 dtf.dtf_SizeFrameInfo = sizeof (struct FrameInfo);
 151
 152                 if (DoDTMethodA (dto, NULL, NULL, (Msg) &dtf) && fri.fri_Dimensions.Depth)
 153                 {
 154                     printf ("PropertyFlags : 0x%lx\n", (unsigned long)fri.fri_PropertyFlags);
 155                     printf ("RedBits       : 0x%x\n", fri.fri_RedBits);
 156                     printf ("GreenBits     : 0x%x\n", fri.fri_GreenBits);
 157                     printf ("BlueBits      : 0x%x\n", fri.fri_BlueBits);
 158                     printf ("Width         : %ld\n", (long) fri.fri_Dimensions.Width);
 159                     printf ("Height        : %ld\n", (long) fri.fri_Dimensions.Height);
 160                     printf ("Depth         : %ld\n", (long) fri.fri_Dimensions.Depth);
 161                     printf ("Screen        : 0x%p\n", fri.fri_Screen);
 162                     printf ("ColorMap      : 0x%p\n", fri.fri_ColorMap);
 163
 164                     if ((fri.fri_PropertyFlags & DIPF_IS_HAM) ||
 165                         (fri.fri_PropertyFlags & DIPF_IS_EXTRAHALFBRITE))
 166                     {
 167                         printf ("HAM or ExtraHalfBrite\n");
 168                         useScreen = TRUE;
 169                     }
 170
 171                     if ((fri.fri_PropertyFlags == 0) && (modeid & 0x800) && (modeid != INVALID_ID))
 172                     {
 173                         printf ("ModeID=0x%08lx\n", (unsigned long)modeid);
 174                         useScreen = TRUE;
 175                     }
 176                 }
 177                 else
 178                     printf ("couldn't obtain environment information\n");
 179
 180                 if (useScreen)
 181                 {
 182                     printf ("this object requires a private screen\n");
 183                 }
 184                 /* Get a lock on the default public screen */
 185                 else if ((scr = LockPubScreen (NULL)))
 186                 {
 187                     /* Make sure we have the dimensions */
 188                     nomwidth  = ((nomwidth) ? nomwidth : 600);
 189                     nomheight = ((nomheight) ? nomheight : 175);
 190
 191                     /* Open the window */
 192
 193                     if ((win = OpenWindowTags (NULL,
 194                                               WA_InnerWidth,    nomwidth,
 195                                               WA_InnerHeight,   nomheight,
 196                                               WA_Title,         (IPTR) name,
 197                                               WA_IDCMP,         IDCMP_FLAGS,
 198                                               WA_DragBar,       TRUE,
 199                                               WA_DepthGadget,   TRUE,
 200                                               WA_CloseGadget,   TRUE,
 201                                               WA_AutoAdjust,    TRUE,
 202                                               WA_SimpleRefresh, TRUE,
 203                                               WA_BusyPointer,   TRUE,
 204                                               WA_Activate,      TRUE,
 205                                               WA_SizeGadget,    TRUE,
 206                                               WA_SizeBBottom,   TRUE,
 207                                               WA_MinWidth,      50,
 208                                               WA_MinHeight,     50,
 209                                               WA_MaxWidth,      10000,
 210                                               WA_MaxHeight,     10000,
 211                                               TAG_DONE)))
 212
 213                     {
 214
 215                         /* Set the dimensions of the DataType object. */
 216                         SetDTAttrs (dto, NULL, NULL,
 217                                     GA_Left,    win->BorderLeft,
 218                                     GA_Top,     win->BorderTop,
 219                                     GA_RelWidth,        - win->BorderLeft - win->BorderRight,
 220                                     GA_RelHeight,       - win->BorderTop - win->BorderBottom,
 221                                     ICA_TARGET, ICTARGET_IDCMP,
 222                                     TAG_DONE);
 223
 224                         /* Add the object to the window */
 225                         AddDTObject (win, NULL, dto, -1);
 226
 227                         /* Refresh the DataType object */
 228                         RefreshDTObjectA (dto, win, NULL, NULL);
 229
 230                         /* Keep going until we're told to stop */
 231                         while (going)
 232                         {
 233                             /* Wait for an event */
 234                             sigr = Wait ((1L << win->UserPort->mp_SigBit) | SIGBREAKF_CTRL_C);
 235
 236                             /* Did we get a break signal */
 237                             if (sigr & SIGBREAKF_CTRL_C)
 238                                 going = FALSE;
 239
 240                             /* Pull Intuition messages */
 241                             while ((imsg = (struct IntuiMessage *) GetMsg (win->UserPort)))
 242                             {
 243                                 /* Handle each message */
 244                                 switch (imsg->Class)
 245                                 {
 246                                     case IDCMP_CLOSEWINDOW:
 247                                         going = FALSE;
 248                                         break;
 249
 250                                     case IDCMP_VANILLAKEY:
 251                                         switch (imsg->Code)
 252                                         {
 253                                             case 'Q':
 254                                             case 'q':
 255                                             case  27:
 256                                                 going = FALSE;
 257                                                 break;
 258                                         }
 259                                         break;
 260
 261                                     case IDCMP_IDCMPUPDATE:
 262                                         tstate = tags = (struct TagItem *) imsg->IAddress;
 263                                         while ((tag = NextTagItem(&tstate)))
 264                                         {
 265                                             tidata = tag->ti_Data;
 266                                             switch (tag->ti_Tag)
 267                                             {
 268                                                 /* Change in busy state */
 269                                                 case DTA_Busy:
 270                                                     if (tidata)
 271                                                         SetWindowPointer (win, WA_BusyPointer, TRUE, TAG_DONE);
 272                                                     else
 273                                                         SetWindowPointer (win, WA_Pointer, NULL, TAG_DONE);
 274                                                     break;
 275
 276                                                 /* Error message */
 277                                                 case DTA_ErrorLevel:
 278                                                     if (tidata)
 279                                                     {
 280                                                         errnum = GetTagData (DTA_ErrorNumber, 0, tags);
 281                                                         PrintErrorMsg (errnum, (STRPTR) options[OPT_NAME]);
 282                                                     }
 283                                                     break;
 284
 285                                                 /* Time to refresh */
 286                                                 case DTA_Sync:
 287                                                     /* Refresh the DataType object */
 288                                                     RefreshDTObjectA (dto, win, NULL, NULL);
 289                                                     break;
 290                                             }
 291                                         }
 292                                         break;
 293                                 }
 294
 295                                 /* Done with the message, so reply to it */
 296                                 ReplyMsg ((struct Message *) imsg);
 297                             }
 298                         }
 299
 300                         /* Remove the object from the window */
 301                         RemoveDTObject (win, dto);
 302
 303                         /* Close the window now */
 304                         CloseWindow (win);
 305                     }
 306                     else
 307                         printf ("couldn't open window\n");
 308
 309                     /* Unlock the screen */
 310                     UnlockPubScreen (NULL, scr);
 311                 }
 312                 else
 313                     printf ("couldn't lock default public screen\n");
 314
 315                 /* Dispose of the DataType object */
 316                 DisposeDTObject (dto);
 317             }
 318             else
 319                 PrintErrorMsg (IoErr (), (STRPTR) options[OPT_NAME]);
 320
 321             /* Close the libraries */
 322             CloseLibrary ((struct Library *)UtilityBase);
 323             CloseLibrary ((struct Library *)GfxBase);
 324             CloseLibrary ((struct Library *)IntuitionBase);
 325             CloseLibrary (DataTypesBase);
 326         }
 327         else
 328             printf ("couldn't open datatypes.library\n");
 329
 330         FreeArgs (rdargs);
 331     }
 332     else
 333         PrintErrorMsg (IoErr (), NULL);
 334
 335     return 0;
 336 }