// Get backdrop pattern
short display_get_pattern(BOOL use_custom)
{
APTR iff;
BPTR file;
struct WBPatternPrefs pattern[NUM_PATTERNS];
short a;
char *data[NUM_PATTERNS],*filename;
short change=0;
ULONG flags=0;
// Copy from system fields to custom fields (if custom field is empty, or custom flag is not set)
for (a=0;a<4;a++)
{
if (!GUI->env_BackgroundPic[a][0] || !use_custom)
{
strcpy(GUI->env_BackgroundPic[a],environment->env->env_BackgroundPic[a]);
GUI->env_BackgroundFlags[a]=environment->env->env_BackgroundFlags[a];
GUI->env_BackgroundBorderColour[a]=environment->env->env_BackgroundBorderColour[a];
}
}
// Pattern disabled?
if (environment->env->display_options&DISPOPTF_NO_BACKDROP)
{
// Check both patterns are invalid
for (a=0;a<NUM_PATTERNS;a++)
{
// Is pattern valid?
if (GUI->pattern[a].valid)
{
// Clear existing pattern
display_update_pattern(a,0);
// Free pattern data
FreeVec(GUI->pattern[a].data);
GUI->pattern[a].data=0;
// Free pattern
FreePattern(&GUI->pattern[a]);
}
}
return 0;
}
// Use pattern prefs?
if (environment->env->display_options&DISPOPTF_USE_WBPATTERN)
{
// End pattern notification
stop_file_notify(GUI->pattern_notify);
// Get filename
filename=(IntuitionBase->LibNode.lib_Version<39)?"env:sys/wb.pat":"env:sys/wbpattern.prefs";
// User-specified file?
if (environment->env->backdrop_prefs[0])
{
BPTR lock;
// Does file exist?
if (lock=Lock(environment->env->backdrop_prefs,ACCESS_READ))
{
// Yep
UnLock(lock);
filename=environment->env->backdrop_prefs;
}
}
// Initialise pattern and data pointers
for (a=0;a<NUM_PATTERNS;a++)
{
pattern[a]=GUI->pattern[a].prefs;
data[a]=0;
}
// Try to open wbpattern prefs file
if (IntuitionBase->LibNode.lib_Version>=39 &&
(iff=IFFOpen(filename,IFF_READ,ID_PREF)))
{
ULONG id;
// Scan for chunks we know and love
while (id=IFFNextChunk(iff,0))
{
// FastIPrefs FIP0 chunk?
if (id==ID_FIP0)
{
// Get flags
IFFReadChunkBytes(iff,&flags,sizeof(flags));
}
// PTRN chunk?
else
if (id==ID_PTRN)
{
struct WBPatternPrefs *prefs;
// Allocate space for chunk
if (prefs=AllocVec(IFFChunkSize(iff),MEMF_CLEAR))
{
// Read chunk
IFFReadChunkBytes(iff,prefs,-1);
// Pattern we can handle?
if (prefs->wbp_Which==WBP_ROOT ||
prefs->wbp_Which==WBP_DRAWER)
{
// Copy data
CopyMem(
(char *)prefs,
(char *)&pattern[prefs->wbp_Which],
sizeof(struct WBPatternPrefs));
// Allocate pattern data
if (prefs->wbp_DataLength>0 &&
(data[prefs->wbp_Which]=AllocVec(prefs->wbp_DataLength+1,MEMF_CLEAR)))
{
// Copy pattern data
CopyMem((char *)(prefs+1),data[prefs->wbp_Which],prefs->wbp_DataLength);
}
}
// Free chunk
FreeVec(prefs);
}
}
}
// Close iff file
IFFClose(iff);
}
// Couldn't find it, try for wb.pat
else
if (IntuitionBase->LibNode.lib_Version<39 &&
(file=Open(filename,MODE_OLDFILE)))
{
// Allocate pattern data
if (data[PATTERN_MAIN]=AllocVec(96,MEMF_CLEAR))
{
// Skip forwards
Seek(file,20,OFFSET_CURRENT);
// Read pattern
if ((Read(file,data[PATTERN_MAIN],96))<96)
{
FreeVec(data[PATTERN_MAIN]);
data[PATTERN_MAIN]=0;
}
// Fill out WBPatternPrefs
else
{
pattern[PATTERN_MAIN].wbp_Flags=WBPF_PATTERN;
pattern[PATTERN_MAIN].wbp_Depth=GUI->screen_pointer->BitMap.Depth;
if (pattern[PATTERN_MAIN].wbp_Depth>MAXDEPTH)
pattern[PATTERN_MAIN].wbp_Depth=MAXDEPTH;
}
}
// Close file
Close(file);
}
// Start notification of wbpattern prefs
GUI->pattern_notify=start_file_notify(filename,NOTIFY_PATTERN_CHANGED,GUI->appmsg_port);
}
// Otherwise, under 39 user-defined pictures
else
if (GfxBase->LibNode.lib_Version>=39)
{
short pat;
// Do both patterns
for (pat=0;pat<NUM_PATTERNS;pat++)
{
// Got valid picture?
if (GUI->env_BackgroundPic[pat][0])
{
// Fill out WBPatternPrefs
pattern[pat].wbp_Flags=0;
pattern[pat].wbp_Which=pat;
pattern[pat].wbp_DataLength=strlen(GUI->env_BackgroundPic[pat]);
if (data[pat]=AllocVec(pattern[pat].wbp_DataLength+1,0))
strcpy(data[pat],GUI->env_BackgroundPic[pat]);
}
// Set to no pattern
else
{
// Fill out WBPatternPrefs
pattern[pat].wbp_Flags=WBPF_PATTERN;
pattern[pat].wbp_DataLength=0;
data[pat]=0;
}
}
}
// Otherwise, default to no pattern
else
{
short pat;
// Do both patterns
for (pat=0;pat<NUM_PATTERNS;pat++)
{
// Fill out WBPatternPrefs
pattern[pat].wbp_Flags=WBPF_PATTERN;
pattern[pat].wbp_DataLength=0;
data[pat]=0;
}
}
// Go through both patterns
for (a=0;a<NUM_PATTERNS;a++)
{
BOOL diff=0;
short precision=0;
// Using Opus settings?
if (!(environment->env->display_options&DISPOPTF_USE_WBPATTERN))
{
// Get precision
if (GUI->env_BackgroundFlags[a]&ENVBF_PRECISION_NONE)
precision=-1;
else
if (GUI->env_BackgroundFlags[a]&ENVBF_PRECISION_GUI)
precision=2;
else
if (GUI->env_BackgroundFlags[a]&ENVBF_PRECISION_ICON)
precision=1;
else
if (GUI->env_BackgroundFlags[a]&ENVBF_PRECISION_EXACT)
precision=3;
}
// Maybe set in prefs
else
{
// Get precision
precision=(a==0)?PATF_WB_MODE(flags):PATF_LISTER_MODE(flags);
}
// Valid data?
if (data[a])
{
// No last pattern?
if (!GUI->pattern[a].data)
{
diff=1;
}
// Changed from pattern to picture or vice versa?
else
if ((pattern[a].wbp_Flags&WBPF_PATTERN && !(GUI->pattern[a].prefs.wbp_Flags&WBPF_PATTERN)) ||
(!(pattern[a].wbp_Flags&WBPF_PATTERN) && GUI->pattern[a].prefs.wbp_Flags&WBPF_PATTERN))
{
diff=1;
}
// Pattern pattern?
else
if (pattern[a].wbp_Flags&WBPF_PATTERN)
{
// Different depth?
if (pattern[a].wbp_Depth!=GUI->pattern[a].prefs.wbp_Depth) diff=1;
// Has data changed from the last one?
else
{
short num,d;
// Get amount of data
num=PAT_HEIGHT*pattern[a].wbp_Depth;
// Compare data
for (d=0;d<num;d++)
{
if (((USHORT *)data[a])[d]!=((USHORT *)GUI->pattern[a].data)[d])
{
diff=1;
break;
}
}
}
}
// Picture?
else
{
// Different name for picture, or it's random?
if (strcmp(data[a],GUI->pattern[a].data)!=0 || GUI->pattern[a].random)
{
diff=1;
}
// Precision changed?
else
if (precision!=GUI->pattern[a].precision)
{
diff=1;
}
// Stretching changed?
else
if (a==0 &&
((GUI->env_BackgroundFlags[a]&ENVBF_STRETCH_PIC && !(GUI->pattern[a].flags&PATF_STRETCH)) ||
!(GUI->env_BackgroundFlags[a]&ENVBF_STRETCH_PIC) && (GUI->pattern[a].flags&PATF_STRETCH)))
{
diff=1;
}
// Centering changed?
else
if ((GUI->env_BackgroundFlags[a]&ENVBF_CENTER_PIC && !(GUI->pattern[a].flags&PATF_CENTER)) ||
!(GUI->env_BackgroundFlags[a]&ENVBF_CENTER_PIC) && (GUI->pattern[a].flags&PATF_CENTER))
{
diff=2;
}
}
}
// Had last data?
else
if (GUI->pattern[a].data) diff=1;
if (diff!=1)
{
// Border pen changed?
if ((GUI->env_BackgroundFlags[a]&ENVBF_USE_COLOUR && GUI->pattern[a].border_pen==0) ||
(!(GUI->env_BackgroundFlags[a]&ENVBF_USE_COLOUR) && GUI->pattern[a].border_pen!=0))
{
diff=3;
}
else
if (GUI->pattern[a].border_pen!=0 && GUI->env_BackgroundFlags[a]&ENVBF_USE_COLOUR)
{
ULONG col[3];
GetPalette32(
&GUI->screen_pointer->ViewPort,
col,
1,
(GUI->pattern[a].border_pen==-1)?0:GUI->pattern[a].border_pen);
if (ENVBF_COL_R_GET(col[0])!=ENVBF_COL_R_GET(GUI->env_BackgroundBorderColour[a]) ||
ENVBF_COL_R_GET(col[1])!=ENVBF_COL_G_GET(GUI->env_BackgroundBorderColour[a]) ||
ENVBF_COL_R_GET(col[2])!=ENVBF_COL_B_GET(GUI->env_BackgroundBorderColour[a]))
{
diff=3;
}
}
}
// Has it changed?
if (diff)
{
// Existing pattern valid?
if (GUI->pattern[a].valid)
{
// Clear existing patterns
display_update_pattern(a,0);
}
// Change more than centering?
if (diff==1)
{
// Free existing pattern
FreePattern(&GUI->pattern[a]);
FreeVec(GUI->pattern[a].data);
// Copy pattern and data pointer
GUI->pattern[a].prefs=pattern[a];
GUI->pattern[a].data=data[a];
// Stretch?
if (a==0 && GUI->env_BackgroundFlags[a]&ENVBF_STRETCH_PIC)
{
flags|=PATF_STRETCH;
flags&=~PATF_CENTER;
}
else
{
flags&=~PATF_STRETCH;
if (!(environment->env->display_options&DISPOPTF_USE_WBPATTERN) &&
GUI->env_BackgroundFlags[a]&ENVBF_CENTER_PIC)
flags|=PATF_CENTER;
else
flags&=~PATF_CENTER;
}
// Set flags and precision
GUI->pattern[a].flags=flags;
GUI->pattern[a].precision=precision;
// Initialise pattern
GetPattern(
&GUI->pattern[a],
GUI->screen_pointer,
GUI->env_BackgroundBorderColour[a]|(GUI->env_BackgroundFlags[a]&ENVBF_USE_COLOUR));
}
// Change colour
else
if (diff==3)
{
// Initialise pattern colour
GetPatternBorder(
&GUI->pattern[a],
GUI->screen_pointer,
GUI->env_BackgroundBorderColour[a]|(GUI->env_BackgroundFlags[a]&ENVBF_USE_COLOUR));
}
// Centering changed
else
{
// Environment flags set for centering?
if (!(environment->env->display_options&DISPOPTF_USE_WBPATTERN) &&
GUI->env_BackgroundFlags[a]&ENVBF_CENTER_PIC)
GUI->pattern[a].flags|=PATF_CENTER;
else
GUI->pattern[a].flags&=~PATF_CENTER;
}
// Install new pattern
display_update_pattern(a,1);
}
// If not, free data
else FreeVec(data[a]);
}
return change;
}
// Load a backfill pattern; pattern must be locked exclusively
void GetPattern(PatternData *pattern,struct Screen *screen,ULONG border_col)
{
// Initially make invalid
pattern->valid=FALSE;
pattern->border_pen=0;
// Set screen pointer
pattern->screen=screen;
// Check for invalid data
if (!pattern->data)
{
// Update border pen
GetPatternBorder(pattern,screen,border_col);
return;
}
// Bitmap pattern?
if (pattern->prefs.wbp_Flags&WBPF_PATTERN)
{
UWORD *ptr,*planes[MAXDEPTH];
short num,row,col,pen;
// Get plane pointers
for (num=0;num<pattern->prefs.wbp_Depth;num++)
{
planes[num]=((UWORD *)pattern->data)+(PAT_HEIGHT*num);
}
pattern->fill_plane_key=0;
// Clear fill initially
for (num=0,ptr=pattern->fill[0];num<128;num++,ptr++)
*ptr=0;
// Under 37 use fill pattern as supplied
if (((struct Library *)GfxBase)->lib_Version<39)
{
for (num=0;num<pattern->prefs.wbp_Depth;num++)
{
CopyMem(
(char *)planes[num],
(char *)pattern->fill[num],
PAT_HEIGHT*sizeof(UWORD));
}
pattern->fill_plane_key=pattern->prefs.wbp_Depth;
}
// Otherwise, we need to remap
else
{
// Go through pattern rows
for (row=0;row<PAT_HEIGHT;row++)
{
// Go through bits
for (col=0;col<PAT_WIDTH;col++)
{
// Clear pen
pen=0;
// Calculate pixel colour
for (num=0;num<pattern->prefs.wbp_Depth;num++)
{
// Is bit set in this bitplane?
if (planes[num][row]&(1<<col)) pen|=(1<<num);
}
// Pixel set?
if (pen)
{
// Map pens 4-7 to top four colours
if (pen>=4 && screen->RastPort.BitMap->Depth<=8)
{
pen=(1<<screen->RastPort.BitMap->Depth)-(8-pen);
}
// Remap
for (num=0;num<8;num++)
{
// Want this bit?
if (pen&(1<<num))
{
// Set bit
pattern->fill[num][row]|=1<<col;
if (num>=pattern->fill_plane_key)
pattern->fill_plane_key=num+1;
}
}
}
}
}
}
// Any data?
if (pattern->fill_plane_key>0)
{
short depth;
// Get depth for bitmap
if (((struct Library *)GfxBase)->lib_Version>=39)
depth=GetBitMapAttr(screen->RastPort.BitMap,BMA_DEPTH);
else
depth=screen->RastPort.BitMap->Depth;
// Check its not too deep
if (depth>8) depth=8;
// Allocate bitmap for pattern
if ((pattern->pattern_bitmap=
NewBitMap(
PATTILE_SIZE,
PATTILE_SIZE,
depth,
BMF_CLEAR,
0)))
{
struct RastPort rp;
struct BitMap *bitmap;
// Initialise dummy rastport
InitRastPort(&rp);
rp.BitMap=pattern->pattern_bitmap;
// Set fill pattern
SetAfPt(&rp,pattern->fill[0],-4);
// Fill bitmap
SetRast(&rp,0);
RectFill(&rp,0,0,PATTILE_SIZE-1,PATTILE_SIZE-1);
// Is the screen a non-standard bitmap?
if (((struct Library *)GfxBase)->lib_Version>=39 &&
!(GetBitMapAttr(screen->RastPort.BitMap,BMA_FLAGS)&BMF_STANDARD))
{
// Try and allocate friend bitmap
if ((bitmap=
NewBitMap(
PATTILE_SIZE,
PATTILE_SIZE,
depth,
BMF_CLEAR,
screen->RastPort.BitMap)))
{
// Copy to friend bitmap
BltBitMap(
pattern->pattern_bitmap,0,0,
bitmap,0,0,
PATTILE_SIZE,PATTILE_SIZE,
0xc0,0xff,0);
// Free original bitmap
DisposeBitMap(pattern->pattern_bitmap);
// Use new bitmap pointer
pattern->pattern_bitmap=bitmap;
}
}
// Get bitmap pointer
pattern->bitmap=pattern->pattern_bitmap;
// Get pattern size
pattern->width=PATTILE_SIZE;
pattern->height=PATTILE_SIZE;
}
}
}
// Picture; must have datatypes
else
if (DataTypesBase)
{
short len;
BOOL remap=1;
long precision=PRECISION_IMAGE;
char name[256];
long ver=0;
struct Library *pdt;
#ifdef PATCH_OK
APTR patchhandle=0;
#endif
// Check picture datatype version
if ((pdt=OpenLibrary("sys:classes/datatypes/picture.datatype",0)) ||
(pdt=OpenLibrary("picture.datatype",0)))
{
// Get version
ver=pdt->lib_Version;
CloseLibrary(pdt);
}
// No remap?
if ((len=strlen(pattern->data))>8 &&
stricmp(pattern->data+len-8,".noremap")==0) remap=0;
// Precision?
if (len>6 && stricmp(pattern->data+len-6,".exact")==0)
precision=PRECISION_EXACT;
// Specified in prefs?
else
if (pattern->precision)
{
if (pattern->precision==-1) remap=0;
else
if (pattern->precision==1) precision=PRECISION_ICON;
else
if (pattern->precision==2) precision=PRECISION_GUI;
else
if (pattern->precision==3) precision=PRECISION_EXACT;
}
#ifdef PATCH_OK
// If we've got v43 of the datatype, we don't need the fastram patch
if (ver<43)
{
// Add this task to the patchlist for allocbitmap
patchhandle=AddAllocBitmapPatch(FindTask(0),screen);
}
#endif
// Turn back on requesters
((struct Process *)FindTask(0))->pr_WindowPtr=GUI->window;
// Check for random pictures, and then load picture
if (pattern_check_random(pattern,name) &&
(pattern->object=
NewDTObject(name,
DTA_GroupID,GID_PICTURE,
PDTA_Screen,screen,
PDTA_FreeSourceBitMap,TRUE,
(ver>42)?PDTA_DestMode:TAG_IGNORE,MODE_V43,
(ver>42)?PDTA_UseFriendBitMap:TAG_IGNORE,TRUE,
TAG_END)))
{
struct BitMapHeader *header;
struct BitMap *bitmap;
D_S(struct FileInfoBlock, fib)
// Get file information
if (GetFileInfo(name,fib) && strnicmp(fib->fib_Comment,"dopus ",6)==0)
{
char *args=fib->fib_Comment+6;
short val;
rexx_skip_space(&args);
while ((val=rexx_match_keyword(&args,background_key,0))!=-1)
{
// Tile/center/stretch
if (val==3)
pattern->flags&=~(PATF_CENTER|PATF_STRETCH);
else
if (val==4)
{
pattern->flags|=PATF_CENTER;
pattern->flags&=~PATF_STRETCH;
}
else
if (val==5 && pattern->prefs.wbp_Which==0)
{
pattern->flags|=PATF_STRETCH;
pattern->flags&=~PATF_CENTER;
}
// Precision
else
if (val==6)
{
// Get precision
rexx_skip_space(&args);
if ((val=rexx_match_keyword(&args,precision_key,0))>-1)
{
if (val==0)
remap=0;
else
if (val==1)
precision=PRECISION_GUI;
else
if (val==2)
precision=PRECISION_ICON;
else
if (val==3)
precision=PRECISION_IMAGE;
else
if (val==4)
precision=PRECISION_EXACT;
}
}
// Border
else
if (val==8)
{
// Off?
rexx_skip_space(&args);
if (rexx_match_keyword(&args,on_off_strings2,0)==0)
border_col&=~ENVBF_USE_COLOUR;
else
{
border_col=ENVBF_USE_COLOUR;
border_col|=Atoh(args,-1)<<8;
}
}
}
}
// Layout picture (should check for success)
SetDTAttrs(pattern->object,0,0,
OBP_Precision,precision,
PDTA_Remap,remap,
TAG_END);
DoMethod(pattern->object,DTM_PROCLAYOUT,0,1);
// Get bitmap pointer and header
GetDTAttrs(pattern->object,
PDTA_BitMap,&bitmap,
PDTA_DestBitMap,&pattern->bitmap,
PDTA_BitMapHeader,&header,
TAG_END);
// No dest bitmap?
if (!pattern->bitmap) pattern->bitmap=bitmap;
// Valid bitmap?
if (pattern->bitmap)
{
// Get width and height
pattern->width=header->bmh_Width;
pattern->height=header->bmh_Height;
}
}
// Turn off requesters
((struct Process *)FindTask(0))->pr_WindowPtr=(APTR)-1;
#ifdef PATCH_OK
// Remove this task from the patchlist for allocbitmap
if (patchhandle)
RemAllocBitmapPatch(patchhandle);
#endif
// Got bitmap?
if (pattern->bitmap)
{
// Stretch?
if (pattern->flags&PATF_STRETCH)
{
// Not the size of the screen?
if (pattern->width!=screen->Width ||
pattern->height!=screen->Height)
{
// Allocate a bitmap for the stretched picture
if ((pattern->pattern_bitmap=
NewBitMap(
screen->Width,
screen->Height,
GetBitMapAttr(pattern->bitmap,BMA_DEPTH),
BMF_CLEAR,
screen->RastPort.BitMap)))
{
struct BitScaleArgs scale;
// Scale bitmap
scale.bsa_SrcX=0;
scale.bsa_SrcY=0;
scale.bsa_SrcWidth=pattern->width;
scale.bsa_SrcHeight=pattern->height;
scale.bsa_DestX=0;
scale.bsa_DestY=0;
scale.bsa_DestWidth=screen->Width;
scale.bsa_DestHeight=screen->Height;
scale.bsa_XSrcFactor=scale.bsa_SrcWidth;
scale.bsa_XDestFactor=scale.bsa_DestWidth;
scale.bsa_YSrcFactor=scale.bsa_SrcHeight;
scale.bsa_YDestFactor=scale.bsa_DestHeight;
scale.bsa_SrcBitMap=pattern->bitmap;
scale.bsa_DestBitMap=pattern->pattern_bitmap;
scale.bsa_Flags=0;
BitMapScale(&scale);
// Get pointer to scaled bitmap
pattern->bitmap=pattern->pattern_bitmap;
pattern->width=screen->Width;
pattern->height=screen->Height;
}
}
}
}
// Update border pen
GetPatternBorder(pattern,screen,border_col);
}
// Pattern ok now
pattern->valid=TRUE;
}
