Creating Icon Bitmaps

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Icon Viewer and Bitmap Creator

The following program can be used to view Icon or Cursor images and save them as Bitmaps. When you answer Y the bitmap is saved with a black background so that it can be PUT using XOR on to the AND image. The AND image will be black and white if the image is irregularly shaped(not a full box image). It is placed first using PUT with the AND action or can be placed using _PUTIMAGE with the color white _ALPHA being set to 0. In that case, try just placing the XOR image with the color black 0 alpha with _SETALPHA.

Code by Ted Weissgerber

'********************************* IconType.BI INCLUDE FILE ******************************** TYPE IconType 'Icon or cursor file header Reserved AS INTEGER 'Reserved (always 0) ID AS INTEGER 'Resource ID (Icon = 1, Cursor = 2) Count AS INTEGER 'Number of icon bitmaps in Directory of icon entries array END TYPE '6 bytes TYPE ICONENTRY 'or unanimated Cursor entry (see ANI for animated cursors) PWidth AS _BYTE 'Width of icon in pixels (USE THIS) PDepth AS _BYTE 'Height of icon in pixels (USE THIS) NumColors AS _BYTE 'Maximum number of colors: (2 or 16 colors. 256 or 24/32 bit = 0} RES2 AS _BYTE 'Reserved. Not used (always 0) HotSpotX AS INTEGER 'Icon: NumberPlanes(normally 0), Cursor: hotspot pixels from left HotSpotY AS INTEGER 'Icon: BitsPerPixel(normally 0), Cursor: hotspot pixels from top DataSize AS LONG 'Length of icon bitmap in bytes (USE THIS) DataOffset AS LONG 'Offset byte position of icon bitmap data header in file(add 1) END TYPE '16 bytes TYPE ICONHEADER 'Bitmap type header found using entry DataOffset + 1 IconHSize AS LONG 'size of ICON header (always 40 bytes) ICONWidth AS LONG 'bitmap width in pixels. (width and double height may be missing) ICONDepth AS LONG 'Total map height in pixels (TWO TIMES the image height). NumPlanes AS INTEGER 'number of color planes. Must be set to 1. BPP AS INTEGER 'bits per pixel 1, 4, 8, 16, 24 or 32.(USE THIS for BPP) Compress AS LONG 'compression method should always be 0. RAWSize AS LONG 'size of the raw ICON image data(may only be XOR mask size). Hres AS LONG 'horizontal resolution of the image(not normally used) Vres AS LONG 'vertical resolution of the image(not normally used) NumColors AS LONG 'number of colors in the color palette(not normally used) SigColors AS LONG 'number of important colors used(not normally used) END TYPE '40 byte

REM $INCLUDE: 'IconType.BI' DEFINT A-Z DIM Icon AS IconType DIM SHARED Item, BPP DIM SHARED wide&, deep&, bmp&, bmpStretch& DIM Image(26000) dst& = _NEWIMAGE(800, 600, 32) SCREEN dst& hdr$ = " & File ID = # ## Image(s) in file #######, bytes " ico$ = " Size = ## X ## Colors = ## Planes = # BPP = ## " cur$ = " Size = ## X ## Colors = ## HotSpot X = ## Y = ## " dat$ = " DATA Size = #####, bytes DATA Offset = ######, " bm1$ = " HeaderSize = ## MaskArea = ## X ## Planes = # BPP = ## " bm2$ = " Compression = # RAW Data Size = ######, bytes " LOCATE 20, 20: LINE INPUT "Enter an ICOn or CURsor file name: ", IconName$ L = LEN(IconName$) IF L = 0 THEN SOUND 400, 4: SYSTEM dot = INSTR(IconName$, ".") IF dot = 0 THEN Save$ = IconName$: IconName$ = IconName$ + ".ICO" ELSE Save$ = LEFT$(IconName$, dot - 1) END IF OPEN IconName$ FOR BINARY AS #1 length& = LOF(1) PRINT IF length& THEN GET #1, 1, Icon SELECT CASE Icon.ID CASE 1: IC$ = "Icon": ent$ = ico$ CASE 2: IC$ = "Cursor": ent$ = cur$ CASE ELSE: IC$ = "Bitmap?" END SELECT LOCATE 22, 20: PRINT USING hdr$; IC$; Icon.ID; Icon.Count; length& IF Icon.Count THEN count = Icon.Count DIM SHARED Entry(count) AS ICONENTRY DIM SHARED Header(count) AS ICONHEADER FOR Item = 1 TO count '16 bytes each entry GET #1, , Entry(Item) NEXT VIEW PRINT 24 TO 32 FOR Item = 1 TO count GET #1, Entry(Item).DataOffset + 1, Header(Item) 'ADD 1 to offsets! COLOR _RGB(255, 255, 0): LOCATE 24, 30 IF count > 1 THEN PRINT " IMAGE ENTRY #"; Item ELSE PRINT " IMAGE ENTRY" COLOR _RGB(50, 200, 255) PRINT USING ent$; Entry(Item).PWidth; Entry(Item).PDepth; Entry(Item).NumColors; Entry(Item).HotSpotX; Entry(Item).HotSpotY PRINT USING dat$; Entry(Item).DataSize; Entry(Item).DataOffset PRINT USING bm1$; Header(Item).IconHSize; Header(Item).ICONWidth; Header(Item).ICONDepth, Header(Item).NumPlanes; Header(Item).BPP PRINT USING bm2$; Header(Item).Compress; Header(Item).RAWSize PRINT k$ = INPUT$(1) 'Palette(4 or 8BPP) and/or XOR mask starts immediately after an ICONHEADER wide& = Entry(Item).PWidth: deep& = Entry(Item).PDepth: BPP = Header(Item).BPP IF BPP > 8 THEN BitColor = 32 ELSE BitColor = 256 'assign for proper colors bmpStretch& = _NEWIMAGE(4 * wide&, 4 * deep&, BitColor) 'set either 256 or 32 bmp& = _NEWIMAGE(wide&, deep&, BitColor) 'don't bother with _FREEIMAGE, reuse them! SELECT CASE BPP CASE 1: OneBit CASE 4: FourBIT CASE 8: EightBIT CASE IS > 8: TrueCOLOR END SELECT IF BPP < 24 THEN _COPYPALETTE bmp&, bmpStretch& _PUTIMAGE , bmp&, bmpStretch& _DEST 0: _PUTIMAGE (100, 0), bmpStretch& SOUND 600, 3 COLOR _RGB(255, 0, 255): LOCATE CSRLIN, 30: PRINT "Save as Bitmap? (Y/N)"; k$ = INPUT$(1) k$ = UCASE$(k$) PRINT k$ + SPACE$(1); IF k$ = "Y" THEN SaveFile$ = Save$ + LTRIM$(STR$(Item)) + ".BMP" ThirtyTwoBit 0, 0, wide& - 1, deep& - 1, bmp&, SaveFile$ END IF IF k$ = "Y" THEN PRINT "Saved!" ELSE PRINT "Not saved" ANDMask IF BPP < 24 THEN _COPYPALETTE bmp&, bmpStretch& _PUTIMAGE , bmp&, bmpStretch& _DEST 0: _PUTIMAGE (400, 0), bmpStretch& IF k$ = "Y" THEN ANDFile$ = Save$ + LTRIM$(STR$(Item)) + "BG.BMP" ThirtyTwoBit 0, 0, wide& - 1, deep& - 1, bmp&, ANDFile$ END IF k$ = INPUT$(1) CLS NEXT VIEW PRINT ELSE SOUND 400, 4: CLOSE #1: PRINT "No images entries found!": END END IF ELSE: CLOSE #1: SOUND 400, 4: KILL IconName$: END END IF CLOSE #1 END SUB OneBit 'adapted from TheBob's Winbit 'B & W monochrome images ONLY (NO PALETTE data) BitsOver = wide& MOD 32 IF BitsOver THEN ZeroPAD$ = SPACE$((32 - BitsOver) \ 8) _DEST bmp& y = deep& - 1: p$ = " " DO x = 0 DO GET #1, , p$ ByteVAL = ASC(p$) FOR Bit% = 7 TO 0 STEP -1 'read bits left to right IF ByteVAL AND 2 ^ Bit% THEN PSET (x, y), 15 ELSE PSET (x, y), 0 x = x + 1 NEXT Bit% LOOP WHILE x < wide& GET #1, , ZeroPAD$ ' 'prevents odd width image skewing y = y - 1 ' LOOP UNTIL y = -1 END SUB SUB EightBIT 'adapted from TheBob's Winbit '256 palette data Colors (8 BPP) IF wide& MOD 4 THEN ZeroPAD$ = SPACE$(4 - (wide& MOD 4)) _DEST bmp& a$ = " ": u$ = " " OUT &H3C8, 0 FOR Colr = 0 TO 255 GET #1, , a$: Blu = ASC(a$) \ 4 GET #1, , a$: Grn = ASC(a$) \ 4 GET #1, , a$: Red = ASC(a$) \ 4 OUT &H3C9, Red OUT &H3C9, Grn OUT &H3C9, Blu GET #1, , u$ '--- unused byte NEXT Colr y = deep& - 1: p$ = " " DO: x = 0 DO GET #1, , p$ PSET (x, y), ASC(p$) x = x + 1 LOOP WHILE x < wide& GET #1, , ZeroPAD$ ' 'prevents odd width image skewing y = y - 1 LOOP UNTIL y = -1 END SUB SUB FourBIT 'adapted from TheBob's Winbit '16 palette data colors (4 BPP = 8 or 16 color) _DEST bmp& IF wide& MOD 8 THEN ZeroPAD$ = SPACE$((8 - wide& MOD 8) \ 2) 'prevents odd width image skewing a$ = " ": u$ = " " FOR Colr = 0 TO 15 OUT &H3C8, Colr GET #1, , a$: Blu = ASC(a$) \ 4 GET #1, , a$: Grn = ASC(a$) \ 4 GET #1, , a$: Red = ASC(a$) \ 4 OUT &H3C9, Red OUT &H3C9, Grn OUT &H3C9, Blu GET #1, , u$ '--- unused byte NEXT Colr y = deep& - 1: p$ = " " DO x = 0 DO GET #1, , p$ HiNIBBLE = ASC(p$) \ &H10 LoNIBBLE = ASC(p$) AND &HF PSET (x, y), HiNIBBLE x = x + 1 PSET (x, y), LoNIBBLE x = x + 1 LOOP WHILE x < wide& GET #1, , ZeroPAD$ ' 'prevents odd width image skewing y = y - 1 LOOP UNTIL y = -1 END SUB SUB ANDMask ' 'AND MASK is B & W. Black area holds XOR colors, white displays background BitsOver = wide& MOD 32 IF BitsOver THEN ZeroPAD$ = SPACE$((32 - BitsOver) \ 8) 'look for sizes not multiples of 32 bits _DEST bmp& IF BPP < 24 THEN PALETTE ' 'remove for a PUT using previous XOR mask palette data y = deep& - 1: a$ = " ": p$ = " " DO x = 0 DO GET #1, , a$ ByteVAL = ASC(a$) 'MSBit is left when calculating 16 X 16 cursor map 2 byte integer FOR Bit% = 7 TO 0 STEP -1 'values despite M$ documentation that says otherwise! IF ByteVAL AND 2 ^ Bit% THEN 'LONG values cannot be used in a cursor file! IF BPP > 8 THEN PSET (x, y), _RGB32(255, 255, 255) ELSE PSET (x, y), 15 ELSE: IF BPP > 8 THEN PSET (x, y), _RGB32(0, 0, 0) ELSE PSET (x, y), 0 END IF x = x + 1 '16 X 16 = 32 bytes, 32 X 32 = 128 bytes AND MASK SIZES NEXT Bit% '48 X 48 = 288 bytes, 64 X 64 = 512 bytes, 128 X 128 = 2048 bytes LOOP WHILE x < wide& GET #1, , ZeroPAD$ '16 X 16 and 48 X 48 = 2 byte end padder per row in the AND MASK y = y - 1 'adds 32 and 96 bytes respectively to the raw data size! LOOP UNTIL y = -1 END SUB SUB TrueCOLOR ' ' 16 Million colors. NO PALETTE! Colored by pixels (24 or 32 BPP) _DEST bmp& IF ((BMP.PWidth * 3) MOD 4) <> 0 THEN '3 byte pixels ZeroPAD$ = SPACE$((4 - ((BMP.PWidth * 3) MOD 4))) END IF R$ = " ": G$ = " ": B$ = " " y = deep& - 1 DO x = 0 DO GET #1, , B$ '3 bytes set RGB color intensities GET #1, , G$ GET #1, , R$ red& = ASC(R$) green& = ASC(G$) blue& = ASC(B$) PSET (x, y), _RGB(red&, green&, blue&) 'returns closest attribute in 4 or 8 bit x = x + 1 LOOP WHILE x < wide& GET #1, , ZeroPAD$ ' 'prevents odd width image skewing y = y - 1 LOOP UNTIL y = -1 END SUB REM $INCLUDE: '32BitSUB.BM'

'*********************************** 32BitSUB.BM INCLUDE FILE ******************************* SUB ThirtyTwoBit (x1%, y1%, x2%, y2%, image&, Filename$) DIM Colors8%(255) IF x1% > x2% THEN SWAP x1%, x2% IF y1% > y2% THEN SWAP y1%, y2% _SOURCE image& pixelbytes& = _PIXELSIZE(image&) IF pixelbytes& = 0 THEN BEEP: EXIT SUB 'no text screens FileType$ = "BM" QB64$ = "QB64" 'free advertiising in reserved bytes IF pixelbytes& = 1 THEN OffsetBITS& = 1078 ELSE OffsetBITS& = 54 'no palette in 24/32 bit InfoHEADER& = 40 PictureWidth& = (x2% - x1%) + 1 ' don't exceed maximum screen resolutions! PictureDepth& = (y2% - y1%) + 1 NumPLANES% = 1 IF pixelbytes& = 1 THEN BPP% = 8 ELSE BPP% = 24 Compression& = 0 WidthPELS& = 3780 DepthPELS& = 3780 IF pixelbytes& = 1 THEN NumColors& = 256 '24/32 bit say none IF (PictureWidth& AND 3) THEN ZeroPAD$ = SPACE$(4 - (PictureWidth& AND 3)) ImageSize& = (PictureWidth& + LEN(ZeroPAD$)) * PictureDepth& FileSize& = ImageSIZE& + OffsetBITS& f = FREEFILE OPEN Filename$ FOR BINARY AS #f PUT #f, , FileType$ PUT #f, , FileSize& PUT #f, , QB64$ PUT #f, , OffsetBITS& PUT #f, , InfoHEADER& PUT #f, , PictureWidth& PUT #f, , PictureDepth& PUT #f, , NumPLANES% PUT #f, , BPP% PUT #f, , Compression& PUT #f, , ImageSize& PUT #f, , WidthPELS& PUT #f, , DepthPELS& PUT #f, , NumColors& PUT #f, , SigColors& '51 offset IF pixelbytes& = 1 THEN '4 or 8 BPP Palettes set for 256 colors u$ = CHR$(0) FOR c& = 0 TO 255 'PUT as BGR order colors cv& = _PALLETTECOLOR(c&, image&) Colr$ = CHR$(_BLUE32(cv&)) PUT #f, , Colr$ Colr$ = CHR$(_GREEN32(cv&)) PUT #f, , Colr$ Colr$ = CHR$(_RED32(cv&)) PUT #f, , Colr$ PUT #f, , u$ 'Unused byte NEXT END IF FOR y% = y2% TO y1% STEP -1 'place bottom up FOR x% = x1% TO x2% c& = POINT(x%, y%) IF pixelbytes& = 1 THEN a$ = CHR$(c&) Colors8%(ASC(a$)) = 1 ELSE : a$ = LEFT$(MKL$(c&), 3) END IF PUT #f, , a$ NEXT PUT #f, , ZeroPAD$ NEXT FOR n = 0 TO 255 IF Colors8%(n) = 1 THEN SigColors& = SigColors& + 1 NEXT n PUT #f, 51, SigColors& CLOSE #f END SUB

Adapted from code by Bob Seguin
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NOTE: Black areas of an image may become "see through" unless another color attribute is used and set to black!
This can be done by changing another color attribute's RGB settings to 0 or almost 0 and creating a mask after using it in solid black areas of a 4 or 8 BPP palette image. This can also be done using _PUTIMAGE with 32 bit _CLEARCOLOR settings.
See the following page: Creating Sprite Masks

Icon to Bitmap Conversion Function

The following program uses a conversion function with the TYPE definitions inside of the function to eliminate an $INCLUDE library file.

SCREEN _NEWIMAGE(640, 480, 256) _TITLE "Icon Converter" icon$ = "daphne.ico" '<<<<<<<<< change icon file name bitmap$ = "tempfile.bmp" indx% = 5 '1 minimum <<<<<<< higher values than count get highest entry image in icon file IF Icon2BMP(icon$, bitmap$, indx%) THEN img& = _LOADIMAGE(bitmap$) PRINT img& IF img& < -1 THEN ' check that handle value is good before loading _ICON img& ' place image in header _PUTIMAGE (300, 250), img& 'place image on screen _FREEIMAGE img& ' always free unused handles to save memory 'KILL bitmap$ ' comment out and/or rename to save the bitmaps END IF ELSE PRINT "Could not create bitmap!" END IF END ' ---------------------------------------------------- FUNCTION Icon2BMP% (filein AS STRING, fileout AS STRING, index AS INTEGER) TYPE ICONTYPE ' Icon or cursor file header Reserved AS INTEGER ' Reserved (always 0) ID AS INTEGER ' Resource ID (Icon = 1, Cursor = 2) Count AS INTEGER ' Number of icon bitmaps in Directory of icon entries array END TYPE '6 bytes TYPE ENTRYTYPE ' or unanimated Cursor entry (ANI are animated cursors) Wide AS _UNSIGNED _BYTE ' Width of icon in pixels (USE THIS) Use _UNSIGNED over 127 High AS _UNSIGNED _BYTE ' Height of icon in pixels (USE THIS) Use _UNSIGNED over 127 NumColors AS _BYTE ' Maximum number of colors. (2, 8 or 16 colors. 256 or 24/32 bit = 0) RES2 AS _BYTE ' Reserved. Not used (always 0) HotSpotX AS INTEGER ' Icon: NumberPlanes(normally 0), Cursor: hotspot pixels from left HotSpotY AS INTEGER ' Icon: BitsPerPixel(normally 0), Cursor: hotspot pixels from top DataSize AS LONG ' Length of image data in bytes minus Icon and Entry headers (USE THIS) Offset AS LONG ' Start Offset byte position of icon bitmap header(add 1 if TYPE GET) END TYPE '16 bytes TYPE PREHEADER ' Bitmap information not in icon BM header BM AS INTEGER ' Integer value changed to "BM" by PUT Size AS LONG ' Size of the data file(LOF) Reser AS LONG' 2 reserved integers are zero automatically BOffset AS LONG ' Start offset of pixel data(next byte) END TYPE '14 bytes TYPE BMPHEADER ' Bitmap type header found using entry DataOffset + 1 IconHSize AS LONG ' size of ICON header (always 40 bytes) PWidth AS LONG ' bitmap width in pixels (signed integer). PDepth AS LONG ' Total map height in pixels (signed integer is 2 times image height) NumPlanes AS INTEGER ' number of color planes. Must be set to 1. BPP AS INTEGER ' bits per pixel 1, 4, 8, 16, 24 or 32.(USE THIS) Compress AS LONG ' compression method should always be 0. RAWSize AS LONG ' size of the raw ICON image data(may only be XOR mask size). Hres AS LONG ' horizontal resolution of the image(not normally used) Vres AS LONG ' vertical resolution of the image(not normally used) NumColors AS LONG ' number of colors in the color palette(not normally used) SigColors AS LONG ' number of important colors used(not normally used) END TYPE '40 bytes palette and image data immediately follow this header! DIM ICON AS ICONTYPE, ENT AS ENTRYTYPE, PRE AS PREHEADER, BMP AS BMPHEADER rf = FREEFILE IF LCASE$(RIGHT$(filein, 4)) = ".ico" THEN 'check file extension is ICO only OPEN filein FOR BINARY ACCESS READ AS rf ELSE EXIT FUNCTION END IF GET rf, , ICON 'GET 6 byte icon header IF ICON.ID <> 1 OR ICON.Count = 0 THEN CLOSE rf: EXIT FUNCTION IF index > 0 AND index <= ICON.Count THEN entry = 16 * (index - 1) ELSE entry = 16 * (ICON.Count - 1) PRINT ICON.Count, entry SEEK rf, 1 + 6 + entry 'start of indexed Entry header selected GET rf, , ENT 'GET 16 byte Entry Header set by index request or highest available SEEK rf, 1 + ENT.Offset 'go to BMP header offset given in Entry header GET rf, , BMP 'GET 40 byte icon bitmap header information IF BMP.BPP <= 24 THEN pixelbytes = BMP.BPP / 8 ELSE pixelbytes = 3 IF BMP.BPP > 1 AND BMP.BPP <= 8 THEN palettebytes = 4 * (2 ^ BMP.BPP) ELSE palettebytes = 0 datasize& = (ENT.Wide * ENT.High * pixelbytes) + palettebytes 'no padder should be necessary filesize& = datasize& + 14 + 40 ' data and palette + header bmpoffset& = palettebytes + 54 ' data offset from start of bitmap BMP.PWidth = ENT.Wide BMP.PDepth = ENT.High BMP.RAWSize = datasize& - palettebytes PRE.BM = CVI("BM") 'integer value changes to "BM" in file PRE.Size = filesize& PRE.BOffset = bmpoffset& 'start of data after header and palette if used wf = FREEFILE OPEN fileout FOR BINARY AS wf PUT wf, , PRE 'PUT 14 byte bitmap information PUT wf, , BMP 'PUT 40 byte bitmap header information SEEK rf, 1 + ENT.Offset + 40 dat$ = STRING$(datasize&, 0) 'create string variable the length of remaining image data GET rf, , dat$ 'GET remaining palette and only the XOR image data after the indexed header PUT wf, , dat$ 'PUT remaining data into new bitmap file CLOSE rf, wf Icon2BMP = ICON.Count 'function returns number of images available in icon file END FUNCTION

Code by Ted Weissgerber
Note: The index selected or the highest numbered icon image less than the index value is the image displayed.

References

See also:



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