lib/modules/swfbutton.c

   1 /* swfbutton.c
   2
   3    Button functions
   4
   5    Extension module for the rfxswf library.
   6    Part of the swftools package.
   7
   8    Copyright (c) 2000, 2001 Rainer Böhme <rfxswf@reflex-studio.de>
   9
  10    This file is distributed under the GPL, see file COPYING for details
  11
  12 */
  13
  14 int swf_ButtonSetRecord(TAG * t,U8 state,U16 id,U16 layer,MATRIX * m,CXFORM * cx)
  15
  16 { swf_SetU8(t,state);
  17   swf_SetU16(t,id);
  18   swf_SetU16(t,layer);
  19   swf_SetMatrix(t,m);
  20   if (swf_GetTagID(t)==ST_DEFINEBUTTON2) swf_SetCXForm(t,cx,0);
  21   return 0;
  22 }
  23
  24 int swf_ButtonSetCondition(TAG * t,U16 condition)
  25 { swf_SetU16(t,0); // dummy for Action Offset -> later set by ButtonPostProcess
  26   swf_SetU16(t,condition);
  27   return 0;
  28 }
  29
  30 int swf_ButtonSetFlags(TAG * t,U8 flags)
  31 { if (swf_GetTagID(t)==ST_DEFINEBUTTON2)
  32   { swf_SetU8(t,flags);
  33     swf_SetU16(t,0); // dummy for Action Offset -> later set by ButtonPostProcess
  34   }
  35   return 0;
  36 }
  37
  38 void swf_SetButtonOffset(TAG * t,U32 offsetpos)
  39 { U32 now = swf_GetTagPos(t);
  40   U16 diff = now-offsetpos;
  41   swf_SetTagPos(t,offsetpos);
  42   t->data[t->pos++] = (U8)(diff&0xff);
  43   t->data[t->pos++] = (U8)(diff>>8);
  44   swf_SetTagPos(t,now);
  45 }
  46
  47 int swf_ButtonPostProcess(TAG * t,int anz_action)
  48 { if (swf_GetTagID(t)==ST_DEFINEBUTTON2)
  49   { U32 oldTagPos;
  50     U32 offsetpos;
  51
  52     oldTagPos = swf_GetTagPos(t);
  53
  54     // scan DefineButton2 Record
  55
  56     swf_GetU16(t);          // Character ID
  57     swf_GetU8(t);           // Flags;
  58
  59     offsetpos = swf_GetTagPos(t);  // first offset
  60     swf_GetU16(t);
  61
  62     while (swf_GetU8(t))      // state  -> parse ButtonRecord
  63     { swf_GetU16(t);          // id
  64       swf_GetU16(t);          // layer
  65       swf_GetMatrix(t,NULL);  // matrix
  66       swf_GetCXForm(t,NULL,0);// CXForm
  67     }
  68
  69     swf_SetButtonOffset(t,offsetpos);
  70
  71     while(anz_action)
  72     { U8 a;
  73
  74       offsetpos = swf_GetTagPos(t); // offset
  75       swf_GetU16(t);
  76
  77       swf_GetU16(t);                // condition
  78
  79       while ((a=swf_GetU8(t)))        // skip action records
  80       { if (a&0x80)
  81         { U16 l = swf_GetU16(t);
  82           swf_GetBlock(t,NULL,l);
  83         }
  84       }
  85
  86       if (--anz_action) swf_SetButtonOffset(t,offsetpos);
  87     }
  88
  89     swf_SetTagPos(t,oldTagPos);
  90   }
  91   return 0;
  92 }