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akron1 |
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(* |
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akron1 |
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Copyright 2018-2020, 2023 Anton Krotov |
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akron1 |
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This file is part of fb2read. |
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fb2read is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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fb2read is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with fb2read. If not, see . |
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*) |
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MODULE kfonts; |
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IMPORT File, sys := SYSTEM, LISTS, KOSAPI, S := Strings; |
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CONST |
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MIN_FONT_SIZE = 8; |
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MAX_FONT_SIZE = 46; |
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bold* = 1; |
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//italic* = 2; |
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underline* = 4; |
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strike_through* = 8; |
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//smoothing* = 16; |
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//bpp32* = 32; |
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TYPE |
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FNAME = ARRAY 2048 OF CHAR; |
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FILE = RECORD |
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name: FNAME; |
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data, size, pos: INTEGER |
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END; |
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PIX = POINTER TO RECORD (LISTS.ITEM) |
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x, y: INTEGER |
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END; |
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FONT = POINTER TO RECORD |
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chars, |
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smooth: ARRAY 256 OF LISTS.LIST; |
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width: ARRAY 256 OF INTEGER; |
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height: INTEGER; |
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file: FILE |
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END; |
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TFont* = FONT; |
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PROCEDURE getch (VAR F: FILE): CHAR; |
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VAR |
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ch: CHAR; |
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BEGIN |
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IF (F.pos >= 0) & (F.pos < F.size) THEN |
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sys.GET(F.data + F.pos, ch); |
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INC(F.pos) |
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ELSE |
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ch := 0X |
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END |
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RETURN ch |
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END getch; |
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PROCEDURE getint (VAR F: FILE): INTEGER; |
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VAR |
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i: INTEGER; |
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BEGIN |
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IF (F.pos >= 0) & (F.pos < F.size) THEN |
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sys.GET(F.data + F.pos, i); |
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INC(F.pos, 4) |
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ELSE |
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i := 0 |
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END |
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RETURN i |
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END getint; |
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PROCEDURE getpix (list: LISTS.LIST; x, y: INTEGER): BOOLEAN; |
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VAR |
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pix: PIX; |
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res: BOOLEAN; |
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BEGIN |
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res := FALSE; |
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pix := list.first(PIX); |
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WHILE pix # NIL DO |
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IF (pix.x = x) & (pix.y = y) THEN |
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res := TRUE; |
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pix := NIL |
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ELSE |
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pix := pix.next(PIX) |
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END |
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END |
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RETURN res |
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END getpix; |
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PROCEDURE process (font: FONT; n: INTEGER); |
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VAR |
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xsize, ysize, size, ch_size, xmax: INTEGER; |
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ptr: INTEGER; i, c: INTEGER; |
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s: SET; x, y: INTEGER; |
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eoc: BOOLEAN; |
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pix: PIX; chr, smooth: LISTS.LIST; |
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BEGIN |
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font.file.pos := n * 4; |
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ptr := getint(font.file) + 156; |
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font.file.pos := ptr; |
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size := getint(font.file); |
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INC(font.file.pos, size - 6); |
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xsize := ORD(getch(font.file)); |
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ysize := ORD(getch(font.file)); |
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ch_size := (size - 6) DIV 256; |
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INC(ptr, 4); |
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font.height := ysize; |
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FOR c := 0 TO 255 DO |
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chr := font.chars[c]; |
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smooth := font.smooth[c]; |
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font.file.pos := ptr + c * ch_size; |
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x := 0; y := 0; eoc := FALSE; |
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xmax := 0; |
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eoc := (xsize = 0) OR (ysize = 0); |
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WHILE ~eoc DO |
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s := BITS(getint(font.file)); |
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i := 0; |
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WHILE i <= 31 DO |
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IF i IN s THEN |
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NEW(pix); |
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IF x > xmax THEN |
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xmax := x |
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END; |
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pix.x := x; |
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pix.y := y; |
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LISTS.push(chr, pix) |
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END; |
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INC(x); |
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IF x = xsize THEN |
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x := 0; |
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INC(y); |
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IF y = ysize THEN |
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eoc := TRUE; |
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i := 31 |
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END |
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END; |
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INC(i) |
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END |
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END; |
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FOR x := 0 TO xsize - 2 DO |
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FOR y := 0 TO ysize - 2 DO |
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IF getpix(chr, x, y) & getpix(chr, x + 1, y + 1) & |
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~getpix(chr, x + 1, y) & ~getpix(chr, x, y + 1) THEN |
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IF ~getpix(smooth, x + 1, y) THEN |
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NEW(pix); |
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pix.x := x + 1; |
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pix.y := y; |
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LISTS.push(smooth, pix); |
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END; |
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IF ~getpix(smooth, x, y + 1) THEN |
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NEW(pix); |
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pix.x := x; |
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pix.y := y + 1; |
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LISTS.push(smooth, pix) |
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END |
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END |
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END |
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END; |
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FOR x := 1 TO xsize - 1 DO |
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FOR y := 0 TO ysize - 2 DO |
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IF getpix(chr, x, y) & getpix(chr, x - 1, y + 1) & |
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~getpix(chr, x - 1, y) & ~getpix(chr, x, y + 1) THEN |
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IF ~getpix(smooth, x - 1, y) THEN |
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NEW(pix); |
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pix.x := x - 1; |
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pix.y := y; |
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LISTS.push(smooth, pix); |
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END; |
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IF ~getpix(smooth, x, y + 1) THEN |
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NEW(pix); |
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pix.x := x; |
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pix.y := y + 1; |
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LISTS.push(smooth, pix) |
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END |
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END |
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END |
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END; |
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IF xmax = 0 THEN |
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xmax := xsize DIV 3 |
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END; |
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font.width[c] := xmax |
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END |
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END process; |
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PROCEDURE getrgb(color: INTEGER; VAR r, g, b: INTEGER); |
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BEGIN |
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b := ORD(BITS(color) * {0..7}); |
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g := ORD(BITS(LSR(color, 8)) * {0..7}); |
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r := ORD(BITS(LSR(color, 16)) * {0..7}) |
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END getrgb; |
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PROCEDURE rgb(r, g, b: INTEGER): INTEGER; |
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RETURN b + LSL(g, 8) + LSL(r, 16) |
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END rgb; |
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PROCEDURE OutChar (font: FONT; canvas: INTEGER; x, y: INTEGER; c: CHAR; color: INTEGER); |
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VAR |
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xsize, ysize: INTEGER; |
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pix: PIX; |
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bkcolor: INTEGER; |
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r0, b0, g0, r, g, b: INTEGER; |
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ptr: INTEGER; |
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BEGIN |
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sys.GET(canvas, xsize); |
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sys.GET(canvas, ysize); |
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INC(canvas, 8); |
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getrgb(color, r0, g0, b0); |
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pix := font.chars[ORD(c)].first(PIX); |
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WHILE pix # NIL DO |
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sys.PUT(canvas + ((pix.y + y) * xsize + (pix.x + x)) * 4, color); |
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pix := pix.next(PIX) |
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END; |
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pix := font.smooth[ORD(c)].first(PIX); |
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WHILE pix # NIL DO |
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ptr := canvas + ((pix.y + y) * xsize + (pix.x + x)) * 4; |
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sys.GET(ptr, bkcolor); |
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getrgb(bkcolor, r, g, b); |
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r := (r * 7 + r0 * 2) DIV 9; |
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g := (g * 7 + g0 * 2) DIV 9; |
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b := (b * 7 + b0 * 2) DIV 9; |
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sys.PUT(ptr, rgb(r, g, b)); |
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pix := pix.next(PIX) |
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END |
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END OutChar; |
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PROCEDURE TextHeight* (font: FONT): INTEGER; |
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VAR |
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res: INTEGER; |
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BEGIN |
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IF font # NIL THEN |
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res := font.height |
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ELSE |
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res := 0 |
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END |
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RETURN res |
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END TextHeight; |
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PROCEDURE TextOut* (font: FONT; canvas: INTEGER; x, y: INTEGER; text: INTEGER; length: INTEGER; color: INTEGER; flags: INTEGER); |
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VAR |
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c: CHAR; |
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x1: INTEGER; |
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BEGIN |
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IF font # NIL THEN |
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x1 := x; |
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WHILE length > 0 DO |
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sys.GET(text, c); |
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INC(text); |
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DEC(length); |
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OutChar(font, canvas, x, y, c, color); |
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IF BITS(bold) * BITS(flags) = BITS(bold) THEN |
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INC(x); |
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OutChar(font, canvas, x, y, c, color) |
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END; |
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INC(x, font.width[ORD(c)]) |
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END; |
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IF length = -1 THEN |
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sys.GET(text, c); |
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INC(text); |
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WHILE c # 0X DO |
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OutChar(font, canvas, x, y, c, color); |
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IF BITS(bold) * BITS(flags) = BITS(bold) THEN |
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INC(x); |
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OutChar(font, canvas, x, y, c, color) |
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END; |
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INC(x, font.width[ORD(c)]); |
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sys.GET(text, c); |
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INC(text) |
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END |
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END |
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END |
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END TextOut; |
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PROCEDURE TextWidth* (font: FONT; text: INTEGER; length: INTEGER; flags: INTEGER): INTEGER; |
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VAR |
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c: CHAR; |
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res: INTEGER; |
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BEGIN |
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res := 0; |
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IF font # NIL THEN |
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WHILE length > 0 DO |
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sys.GET(text, c); |
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INC(text); |
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DEC(length); |
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IF BITS(bold) * BITS(flags) = BITS(bold) THEN |
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INC(res) |
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END; |
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INC(res, font.width[ORD(c)]) |
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END; |
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IF length = -1 THEN |
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sys.GET(text, c); |
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INC(text); |
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WHILE c # 0X DO |
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IF BITS(bold) * BITS(flags) = BITS(bold) THEN |
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INC(res) |
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END; |
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INC(res, font.width[ORD(c)]); |
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sys.GET(text, c); |
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INC(text) |
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END |
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END |
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END |
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RETURN res |
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END TextWidth; |
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PROCEDURE Enabled*(font: FONT; size: INTEGER): BOOLEAN; |
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VAR |
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offset, temp: INTEGER; |
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BEGIN |
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offset := -1; |
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IF (MIN_FONT_SIZE <= size) & (size <= MAX_FONT_SIZE) & (font # NIL) THEN |
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temp := font.file.data + (size - 8) * 4; |
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IF (font.file.data <= temp) & (temp <= font.file.size + font.file.data - 4) THEN |
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sys.GET(temp, offset) |
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END |
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END |
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RETURN offset # -1 |
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END Enabled; |
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PROCEDURE LoadFont* (fname: ARRAY OF CHAR): FONT; |
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VAR |
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font: FONT; |
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c: INTEGER; |
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ptr: INTEGER; |
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BEGIN |
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NEW(font); |
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IF font # NIL THEN |
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font.file.data := File.Load(fname, font.file.size); |
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IF font.file.data # 0 THEN |
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ptr := KOSAPI.malloc(font.file.size + 4096); |
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IF ptr # 0 THEN |
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sys.MOVE(font.file.data, ptr, font.file.size); |
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font.file.data := KOSAPI.sysfunc3(68, 13, font.file.data); |
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font.file.data := ptr; |
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font.file.pos := 0; |
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COPY(fname, font.file.name); |
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FOR c := 0 TO 255 DO |
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font.chars[c] := LISTS.create(NIL); |
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font.smooth[c] := LISTS.create(NIL); |
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font.width[c] := 0; |
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font.height := 0 |
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END |
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ELSE |
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font.file.data := KOSAPI.sysfunc3(68, 13, font.file.data); |
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DISPOSE(font) |
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END |
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419 |
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420 |
ELSE |
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DISPOSE(font) |
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END |
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END |
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424 |
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RETURN font |
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426 |
END LoadFont; |
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427 |
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428 |
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429 |
PROCEDURE Destroy* (VAR font: FONT); |
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|
430 |
VAR |
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|
431 |
c: INTEGER; |
|
|
432 |
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|
|
433 |
BEGIN |
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|
434 |
IF font # NIL THEN |
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|
435 |
FOR c := 0 TO 255 DO |
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|
436 |
LISTS.destroy(font.chars[c]); |
|
|
437 |
LISTS.destroy(font.smooth[c]); |
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|
438 |
END; |
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|
439 |
IF font.file.data # 0 THEN |
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|
440 |
font.file.data := KOSAPI.sysfunc3(68, 13, font.file.data) |
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|
441 |
END; |
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|
442 |
DISPOSE(font) |
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|
443 |
END |
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|
444 |
END Destroy; |
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|
445 |
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|
|
446 |
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|
447 |
PROCEDURE SetSize* (VAR font: FONT; size: INTEGER): BOOLEAN; |
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|
448 |
VAR |
|
|
449 |
res: BOOLEAN; |
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|
450 |
fname: FNAME; |
|
|
451 |
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|
|
452 |
BEGIN |
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|
453 |
IF Enabled(font, size) THEN |
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|
454 |
fname := font.file.name; |
|
|
455 |
Destroy(font); |
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|
456 |
font := LoadFont(fname); |
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|
457 |
process(font, size - 8); |
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|
458 |
res := TRUE |
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|
459 |
ELSE |
|
|
460 |
res := FALSE |
|
|
461 |
END |
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|
462 |
RETURN res |
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|
463 |
END SetSize; |
|
|
464 |
|
|
|
465 |
|
|
|
466 |
END kfonts. |