home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
MACD 5
/
MACD 5.bin
/
workbench
/
blankery
/
blanker
/
source
/
blankers
/
utility.c
< prev
next >
Wrap
C/C++ Source or Header
|
1993-08-15
|
6KB
|
222 lines
/*
* Copyright (c) 1993 Michael D. Bayne.
* All rights reserved.
*
* Please see the documentation accompanying the distribution for distribution and disclaimer information.
*/
#include <exec/types.h>
#include <exec/memory.h>
#include <dos/dos.h>
#include <intuition/intuition.h>
#include <intuition/screens.h>
#include <intuition/intuitionbase.h>
#include <graphics/gfxbase.h>
#include <graphics/gfxmacros.h>
#include <graphics/copper.h>
#include <graphics/videocontrol.h>
#include <hardware/custom.h>
#include <clib/exec_protos.h>
#include <clib/intuition_protos.h>
#include <clib/graphics_protos.h>
#include <clib/dos_protos.h>
extern struct IntuitionBase *IntuitionBase;
__far extern struct Custom custom;
extern struct GfxBase *GfxBase;
struct BitMap *newMap;
ULONG FRandSeed;
VOID setCopperList( ULONG height, ULONG color, struct ViewPort *vp )
{
#define NUMCOLORS 45
struct UCopList *uCopList;
struct TagItem uCopTags[] = { { VTAG_USERCLIP_SET, 0L }, { VTAG_END_CM, 0L } };
register USHORT i, index = VBeamPos()%NUMCOLORS, spc;
UWORD spectrum[] = { 0x0F00, 0x0E10, 0x0D20, 0x0C30, 0x0B40, 0x0A50, 0x0960, 0x0870, 0x0780, 0x0690,
0x05A0, 0x04B0, 0x03C0, 0x02D0, 0x01E0, 0x00F0, 0x00E1, 0x00D2, 0x00C3, 0x00B4,
0x00A5, 0x0096, 0x0087, 0x0078, 0x0069, 0x005A, 0x004B, 0x003C, 0x002D, 0x001E,
0x000F, 0x010E, 0x020D, 0x030C, 0x040B, 0x050A, 0x0609, 0x0708, 0x0807, 0x0906,
0x0A05, 0x0B04, 0x0C03, 0x0D02, 0x0E01 };
if( uCopList = ( struct UCopList * )AllocMem( sizeof( struct UCopList ), MEMF_PUBLIC|MEMF_CLEAR )) {
spc = height/NUMCOLORS;
CINIT( uCopList, NUMCOLORS );
for( i = 0; i<NUMCOLORS; ++i ) {
CWAIT( uCopList, i*spc, 0 );
CMOVE( uCopList, custom.color[color], spectrum[(i+index)%NUMCOLORS] );
}
CEND( uCopList );
Forbid();
vp->UCopIns = uCopList;
Permit();
VideoControl( vp->ColorMap, uCopTags );
RethinkDisplay();
}
}
ULONG getTopScreenMode( void )
{
BPTR lock;
struct Screen *pubScr;
ULONG scrMode;
lock = LockIBase( 0 );
pubScr = IntuitionBase->FirstScreen;
scrMode = GetVPModeID( &(pubScr->ViewPort));
UnlockIBase( lock );
return( scrMode );
}
ULONG getTopScreenDepth( void )
{
BPTR lock;
struct Screen *pubScr;
struct DrawInfo *dri;
ULONG sDep = 0;
lock = LockIBase( 0 );
pubScr = IntuitionBase->FirstScreen;
if( dri = GetScreenDrawInfo( pubScr )) {
sDep = dri->dri_Depth;
FreeScreenDrawInfo( pubScr, dri );
}
UnlockIBase( lock );
return( sDep );
}
VOID FreeBitMap37( struct BitMap *bm, LONG Width, LONG Height )
{
LONG i;
if( GfxBase->LibNode.lib_Version < 39 ) {
for( i = 0; i < bm->Depth; i++ ) if( bm->Planes[i] ) FreeRaster( bm->Planes[i], Width, Height );
FreeVec( bm );
} else FreeBitMap( bm );
}
struct BitMap *AllocBitMap37( ULONG Width, ULONG Height, ULONG Depth, struct Screen *Scr )
{
struct BitMap *bm;
LONG i;
if( GfxBase->LibNode.lib_Version < 39 ) {
if( bm = AllocVec( sizeof( struct BitMap ), MEMF_CLEAR|MEMF_PUBLIC )) {
InitBitMap( bm, Depth, Width, Height );
for( i = 0; i < Depth; i++ ) if(!( bm->Planes[i] = AllocRaster( Width, Height ))) break;
if( i == Depth ) return( bm );
FreeBitMap37( bm, Width, Height );
return( NULL );
}
} else return( AllocBitMap( Width, Height, Depth, BMF_DISPLAYABLE, Scr->RastPort.BitMap ));
}
struct Screen *cloneTopScreen( void )
{
struct Screen *Scr, *nScr = 0L;
struct DrawInfo *dri;
BPTR lock;
ULONG sMod, sDep, i, Wid, Hei, offx, offy;
UWORD *cols;
/* Lock IntuitionBase so nothing goes away while we're playing with it */
lock = LockIBase( 0 );
/* Grab the first screen and get its attributes */
Scr = IntuitionBase->FirstScreen;
sMod = GetVPModeID( &(Scr->ViewPort)); /* Screen Mode ID */
offx = Scr->LeftEdge;
offy = Scr->TopEdge;
Wid = Scr->Width;
Hei = Scr->Height;
if( dri = GetScreenDrawInfo( Scr )) sDep = dri->dri_Depth;
if( cols = AllocMem( sizeof( WORD ) * ( 1L<<sDep ), MEMF_CLEAR ))
for( i = 0; i < (1L<<sDep); ++i )
cols[i] = GetRGB4( Scr->ViewPort.ColorMap, i );
if( newMap = AllocBitMap37( Wid, Hei, sDep, Scr ))
BltBitMap( Scr->RastPort.BitMap, 0, 0, newMap, 0, 0, Wid, Hei, 0x00C0, 0x00FF, NULL );
UnlockIBase( lock );
if(( newMap )&&( sMod != INVALID_ID )) {
if( nScr = OpenScreenTags( NULL, SA_Width, Wid, SA_Height, Hei, SA_Depth, sDep, SA_Overscan,
OSCAN_MAX, SA_DisplayID, sMod, SA_Pens, (ULONG)dri->dri_Pens, SA_Behind, TRUE, SA_BitMap,
(ULONG)newMap, SA_Quiet, TRUE )) {
LoadRGB4( &(nScr->ViewPort), cols, 1L << sDep );
MoveScreen( nScr, offx, offy<0?offy:0 );
ScreenToFront( nScr );
}
}
if( cols ) FreeMem( cols, ( 1L << sDep ) * sizeof( UWORD ));
if( dri ) FreeScreenDrawInfo( Scr, dri );
return( nScr );
}
void closeTopScreen( struct Screen *Scr )
{
ULONG Wid, Hei;
Wid = Scr->Width;
Hei = Scr->Height;
CloseScreen( Scr );
FreeBitMap37( newMap, Wid, Hei );
}
ULONG fadeScreen( struct Screen *Screen, ULONG delay )
{
UWORD col, i, go = 1;
while( go ) {
go = 0;
for( i = 0; i < (1L << Screen->RastPort.BitMap->Depth); ++i ) {
if( SetSignal( 0L, SIGBREAKF_CTRL_C ) & SIGBREAKF_CTRL_C ) break;
if( col = GetRGB4( Screen->ViewPort.ColorMap, i )) go = 1;
SetRGB4( &(Screen->ViewPort), i,
((col & 0x0F00)>>8)?((col & 0x0F00)>>8)-1:0,
((col & 0x00F0)>>4)?((col & 0x00F0)>>4)-1:0,
(col & 0x000F)?(col & 0x000F)-1:0 );
}
if( i == ( 1L<<Screen->RastPort.BitMap->Depth )) Delay( delay );
else return( FALSE );
}
return( TRUE );
}
ULONG FRand( VOID )
{
return( FRandSeed = ( FRandSeed << 1 )^( 0x1D872B41 ));
}
UWORD *BlankPtr;
struct Window *BlankWnd;
VOID BlankMousePointer( VOID )
{
if( BlankPtr = AllocVec( sizeof( WORD ) * 4, MEMF_CHIP )) {
if( BlankWnd = OpenWindowTags( 0L, WA_Activate, TRUE, WA_Width, 10, WA_Height, 10, WA_Borderless,
TRUE, TAG_END )) {
SetPointer( BlankWnd, BlankPtr, 0, 0, 0, 0 );
}
}
}
VOID UnblankMousePointer( VOID )
{
if( BlankWnd ) CloseWindow( BlankWnd );
if( BlankPtr ) FreeVec( BlankPtr );
}