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 program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  23
  24 int swf_ButtonSetRecord(TAG * t,U8 state,U16 id,U16 layer,MATRIX * m,CXFORM * cx)
  25
  26 { swf_SetU8(t,state);
  27   swf_SetU16(t,id);
  28   swf_SetU16(t,layer);
  29   swf_SetMatrix(t,m);
  30   if (swf_GetTagID(t)==ST_DEFINEBUTTON2) swf_SetCXForm(t,cx,1);
  31   return 0;
  32 }
  33
  34 int swf_ButtonSetCondition(TAG * t,U16 condition)
  35 { swf_SetU16(t,0); // dummy for Action Offset -> later set by ButtonPostProcess
  36   swf_SetU16(t,condition);
  37   return 0;
  38 }
  39
  40 int swf_ButtonSetFlags(TAG * t,U8 flags)
  41 { if (swf_GetTagID(t)==ST_DEFINEBUTTON2)
  42   { swf_SetU8(t,flags);
  43     swf_SetU16(t,0); // dummy for Action Offset -> later set by ButtonPostProcess
  44   }
  45   return 0;
  46 }
  47
  48 void swf_SetButtonOffset(TAG * t,U32 offsetpos)
  49 { U32 now = swf_GetTagPos(t);
  50   U16 diff = now-offsetpos;
  51   swf_SetTagPos(t,offsetpos);
  52   t->data[t->pos++] = (U8)(diff&0xff);
  53   t->data[t->pos++] = (U8)(diff>>8);
  54   swf_SetTagPos(t,now);
  55 }
  56
  57 int swf_ButtonPostProcess(TAG * t,int anz_action)
  58 { if (swf_GetTagID(t)==ST_DEFINEBUTTON2)
  59   { U32 oldTagPos;
  60     U32 offsetpos;
  61
  62     oldTagPos = swf_GetTagPos(t);
  63
  64     // scan DefineButton2 Record
  65
  66     swf_GetU16(t);          // Character ID
  67     swf_GetU8(t);           // Flags;
  68
  69     offsetpos = swf_GetTagPos(t);  // first offset
  70     swf_GetU16(t);
  71
  72     while (swf_GetU8(t))      // state  -> parse ButtonRecord
  73     { swf_GetU16(t);          // id
  74       swf_GetU16(t);          // layer
  75       swf_GetMatrix(t,NULL);  // matrix
  76       swf_GetCXForm(t,NULL,1);// CXForm
  77     }
  78
  79     swf_SetButtonOffset(t,offsetpos);
  80
  81     while(anz_action)
  82     { U8 a;
  83
  84       offsetpos = swf_GetTagPos(t); // offset
  85       swf_GetU16(t);
  86
  87       swf_GetU16(t);                // condition
  88
  89       while ((a=swf_GetU8(t)))        // skip action records
  90       { if (a&0x80)
  91         { U16 l = swf_GetU16(t);
  92           swf_GetBlock(t,NULL,l);
  93         }
  94       }
  95
  96       if (--anz_action) swf_SetButtonOffset(t,offsetpos);
  97     }
  98
  99     swf_SetTagPos(t,oldTagPos);
 100   }
 101   return 0;
 102 }