| /***************************************************************************** |
| |
| gif_font.c - utility font handling and simple drawing for the GIF library |
| |
| ****************************************************************************/ |
| |
| #include <string.h> |
| #include <stdlib.h> |
| |
| #include "gif_lib.h" |
| |
| /***************************************************************************** |
| Ascii 8 by 8 regular font - only first 128 characters are supported. |
| *****************************************************************************/ |
| |
| /* |
| * Each array entry holds the bits for 8 horizontal scan lines, topmost |
| * first. The most significant bit of each constant is the leftmost bit of |
| * the scan line. |
| */ |
| /*@+charint@*/ |
| const unsigned char GifAsciiTable8x8[][GIF_FONT_WIDTH] = { |
| {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* Ascii 0 */ |
| {0x3c, 0x42, 0xa5, 0x81, 0xbd, 0x42, 0x3c, 0x00}, /* Ascii 1 */ |
| {0x3c, 0x7e, 0xdb, 0xff, 0xc3, 0x7e, 0x3c, 0x00}, /* Ascii 2 */ |
| {0x00, 0xee, 0xfe, 0xfe, 0x7c, 0x38, 0x10, 0x00}, /* Ascii 3 */ |
| {0x10, 0x38, 0x7c, 0xfe, 0x7c, 0x38, 0x10, 0x00}, /* Ascii 4 */ |
| {0x00, 0x3c, 0x18, 0xff, 0xff, 0x08, 0x18, 0x00}, /* Ascii 5 */ |
| {0x10, 0x38, 0x7c, 0xfe, 0xfe, 0x10, 0x38, 0x00}, /* Ascii 6 */ |
| {0x00, 0x00, 0x18, 0x3c, 0x18, 0x00, 0x00, 0x00}, /* Ascii 7 */ |
| {0xff, 0xff, 0xe7, 0xc3, 0xe7, 0xff, 0xff, 0xff}, /* Ascii 8 */ |
| {0x00, 0x3c, 0x42, 0x81, 0x81, 0x42, 0x3c, 0x00}, /* Ascii 9 */ |
| {0xff, 0xc3, 0xbd, 0x7e, 0x7e, 0xbd, 0xc3, 0xff}, /* Ascii 10 */ |
| {0x1f, 0x07, 0x0d, 0x7c, 0xc6, 0xc6, 0x7c, 0x00}, /* Ascii 11 */ |
| {0x00, 0x7e, 0xc3, 0xc3, 0x7e, 0x18, 0x7e, 0x18}, /* Ascii 12 */ |
| {0x04, 0x06, 0x07, 0x04, 0x04, 0xfc, 0xf8, 0x00}, /* Ascii 13 */ |
| {0x0c, 0x0a, 0x0d, 0x0b, 0xf9, 0xf9, 0x1f, 0x1f}, /* Ascii 14 */ |
| {0x00, 0x92, 0x7c, 0x44, 0xc6, 0x7c, 0x92, 0x00}, /* Ascii 15 */ |
| {0x00, 0x00, 0x60, 0x78, 0x7e, 0x78, 0x60, 0x00}, /* Ascii 16 */ |
| {0x00, 0x00, 0x06, 0x1e, 0x7e, 0x1e, 0x06, 0x00}, /* Ascii 17 */ |
| {0x18, 0x7e, 0x18, 0x18, 0x18, 0x18, 0x7e, 0x18}, /* Ascii 18 */ |
| {0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x66, 0x00}, /* Ascii 19 */ |
| {0xff, 0xb6, 0x76, 0x36, 0x36, 0x36, 0x36, 0x00}, /* Ascii 20 */ |
| {0x7e, 0xc1, 0xdc, 0x22, 0x22, 0x1f, 0x83, 0x7e}, /* Ascii 21 */ |
| {0x00, 0x00, 0x00, 0x7e, 0x7e, 0x00, 0x00, 0x00}, /* Ascii 22 */ |
| {0x18, 0x7e, 0x18, 0x18, 0x7e, 0x18, 0x00, 0xff}, /* Ascii 23 */ |
| {0x18, 0x7e, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00}, /* Ascii 24 */ |
| {0x18, 0x18, 0x18, 0x18, 0x18, 0x7e, 0x18, 0x00}, /* Ascii 25 */ |
| {0x00, 0x04, 0x06, 0xff, 0x06, 0x04, 0x00, 0x00}, /* Ascii 26 */ |
| {0x00, 0x20, 0x60, 0xff, 0x60, 0x20, 0x00, 0x00}, /* Ascii 27 */ |
| {0x00, 0x00, 0x00, 0xc0, 0xc0, 0xc0, 0xff, 0x00}, /* Ascii 28 */ |
| {0x00, 0x24, 0x66, 0xff, 0x66, 0x24, 0x00, 0x00}, /* Ascii 29 */ |
| {0x00, 0x00, 0x10, 0x38, 0x7c, 0xfe, 0x00, 0x00}, /* Ascii 30 */ |
| {0x00, 0x00, 0x00, 0xfe, 0x7c, 0x38, 0x10, 0x00}, /* Ascii 31 */ |
| {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* */ |
| {0x30, 0x30, 0x30, 0x30, 0x30, 0x00, 0x30, 0x00}, /* ! */ |
| {0x66, 0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /* " */ |
| {0x6c, 0x6c, 0xfe, 0x6c, 0xfe, 0x6c, 0x6c, 0x00}, /* # */ |
| {0x10, 0x7c, 0xd2, 0x7c, 0x86, 0x7c, 0x10, 0x00}, /* $ */ |
| {0xf0, 0x96, 0xfc, 0x18, 0x3e, 0x72, 0xde, 0x00}, /* % */ |
| {0x30, 0x48, 0x30, 0x78, 0xce, 0xcc, 0x78, 0x00}, /* & */ |
| {0x0c, 0x0c, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00}, /* ' */ |
| {0x10, 0x60, 0xc0, 0xc0, 0xc0, 0x60, 0x10, 0x00}, /* ( */ |
| {0x10, 0x0c, 0x06, 0x06, 0x06, 0x0c, 0x10, 0x00}, /* ) */ |
| {0x00, 0x54, 0x38, 0xfe, 0x38, 0x54, 0x00, 0x00}, /* * */ |
| {0x00, 0x18, 0x18, 0x7e, 0x18, 0x18, 0x00, 0x00}, /* + */ |
| {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x70}, /* , */ |
| {0x00, 0x00, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x00}, /* - */ |
| {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00}, /* . */ |
| {0x02, 0x06, 0x0c, 0x18, 0x30, 0x60, 0xc0, 0x00}, /* / */ |
| {0x7c, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x7c, 0x00}, /* 0 */ |
| {0x18, 0x38, 0x78, 0x18, 0x18, 0x18, 0x3c, 0x00}, /* 1 */ |
| {0x7c, 0xc6, 0x06, 0x0c, 0x30, 0x60, 0xfe, 0x00}, /* 2 */ |
| {0x7c, 0xc6, 0x06, 0x3c, 0x06, 0xc6, 0x7c, 0x00}, /* 3 */ |
| {0x0e, 0x1e, 0x36, 0x66, 0xfe, 0x06, 0x06, 0x00}, /* 4 */ |
| {0xfe, 0xc0, 0xc0, 0xfc, 0x06, 0x06, 0xfc, 0x00}, /* 5 */ |
| {0x7c, 0xc6, 0xc0, 0xfc, 0xc6, 0xc6, 0x7c, 0x00}, /* 6 */ |
| {0xfe, 0x06, 0x0c, 0x18, 0x30, 0x60, 0x60, 0x00}, /* 7 */ |
| {0x7c, 0xc6, 0xc6, 0x7c, 0xc6, 0xc6, 0x7c, 0x00}, /* 8 */ |
| {0x7c, 0xc6, 0xc6, 0x7e, 0x06, 0xc6, 0x7c, 0x00}, /* 9 */ |
| {0x00, 0x30, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00}, /* : */ |
| {0x00, 0x30, 0x00, 0x00, 0x00, 0x30, 0x20, 0x00}, /* }, */ |
| {0x00, 0x1c, 0x30, 0x60, 0x30, 0x1c, 0x00, 0x00}, /* < */ |
| {0x00, 0x00, 0x7e, 0x00, 0x7e, 0x00, 0x00, 0x00}, /* = */ |
| {0x00, 0x70, 0x18, 0x0c, 0x18, 0x70, 0x00, 0x00}, /* > */ |
| {0x7c, 0xc6, 0x0c, 0x18, 0x30, 0x00, 0x30, 0x00}, /* ? */ |
| {0x7c, 0x82, 0x9a, 0xaa, 0xaa, 0x9e, 0x7c, 0x00}, /* @ */ |
| {0x38, 0x6c, 0xc6, 0xc6, 0xfe, 0xc6, 0xc6, 0x00}, /* A */ |
| {0xfc, 0xc6, 0xc6, 0xfc, 0xc6, 0xc6, 0xfc, 0x00}, /* B */ |
| {0x7c, 0xc6, 0xc6, 0xc0, 0xc0, 0xc6, 0x7c, 0x00}, /* C */ |
| {0xf8, 0xcc, 0xc6, 0xc6, 0xc6, 0xcc, 0xf8, 0x00}, /* D */ |
| {0xfe, 0xc0, 0xc0, 0xfc, 0xc0, 0xc0, 0xfe, 0x00}, /* E */ |
| {0xfe, 0xc0, 0xc0, 0xfc, 0xc0, 0xc0, 0xc0, 0x00}, /* F */ |
| {0x7c, 0xc6, 0xc0, 0xce, 0xc6, 0xc6, 0x7e, 0x00}, /* G */ |
| {0xc6, 0xc6, 0xc6, 0xfe, 0xc6, 0xc6, 0xc6, 0x00}, /* H */ |
| {0x78, 0x30, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00}, /* I */ |
| {0x1e, 0x06, 0x06, 0x06, 0xc6, 0xc6, 0x7c, 0x00}, /* J */ |
| {0xc6, 0xcc, 0xd8, 0xf0, 0xd8, 0xcc, 0xc6, 0x00}, /* K */ |
| {0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xfe, 0x00}, /* L */ |
| {0xc6, 0xee, 0xfe, 0xd6, 0xc6, 0xc6, 0xc6, 0x00}, /* M */ |
| {0xc6, 0xe6, 0xf6, 0xde, 0xce, 0xc6, 0xc6, 0x00}, /* N */ |
| {0x7c, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x7c, 0x00}, /* O */ |
| {0xfc, 0xc6, 0xc6, 0xfc, 0xc0, 0xc0, 0xc0, 0x00}, /* P */ |
| {0x7c, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x7c, 0x06}, /* Q */ |
| {0xfc, 0xc6, 0xc6, 0xfc, 0xc6, 0xc6, 0xc6, 0x00}, /* R */ |
| {0x78, 0xcc, 0x60, 0x30, 0x18, 0xcc, 0x78, 0x00}, /* S */ |
| {0xfc, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x00}, /* T */ |
| {0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x7c, 0x00}, /* U */ |
| {0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x6c, 0x38, 0x00}, /* V */ |
| {0xc6, 0xc6, 0xc6, 0xd6, 0xfe, 0xee, 0xc6, 0x00}, /* W */ |
| {0xc6, 0xc6, 0x6c, 0x38, 0x6c, 0xc6, 0xc6, 0x00}, /* X */ |
| {0xc3, 0xc3, 0x66, 0x3c, 0x18, 0x18, 0x18, 0x00}, /* Y */ |
| {0xfe, 0x0c, 0x18, 0x30, 0x60, 0xc0, 0xfe, 0x00}, /* Z */ |
| {0x3c, 0x30, 0x30, 0x30, 0x30, 0x30, 0x3c, 0x00}, /* [ */ |
| {0xc0, 0x60, 0x30, 0x18, 0x0c, 0x06, 0x03, 0x00}, /* \ */ |
| {0x3c, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0x3c, 0x00}, /* ] */ |
| {0x00, 0x38, 0x6c, 0xc6, 0x00, 0x00, 0x00, 0x00}, /* ^ */ |
| {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff}, /* _ */ |
| {0x30, 0x30, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00}, /* ` */ |
| {0x00, 0x00, 0x7c, 0x06, 0x7e, 0xc6, 0x7e, 0x00}, /* a */ |
| {0xc0, 0xc0, 0xfc, 0xc6, 0xc6, 0xe6, 0xdc, 0x00}, /* b */ |
| {0x00, 0x00, 0x7c, 0xc6, 0xc0, 0xc0, 0x7e, 0x00}, /* c */ |
| {0x06, 0x06, 0x7e, 0xc6, 0xc6, 0xce, 0x76, 0x00}, /* d */ |
| {0x00, 0x00, 0x7c, 0xc6, 0xfe, 0xc0, 0x7e, 0x00}, /* e */ |
| {0x1e, 0x30, 0x7c, 0x30, 0x30, 0x30, 0x30, 0x00}, /* f */ |
| {0x00, 0x00, 0x7e, 0xc6, 0xce, 0x76, 0x06, 0x7c}, /* g */ |
| {0xc0, 0xc0, 0xfc, 0xc6, 0xc6, 0xc6, 0xc6, 0x00}, /* */ |
| {0x18, 0x00, 0x38, 0x18, 0x18, 0x18, 0x3c, 0x00}, /* i */ |
| {0x18, 0x00, 0x38, 0x18, 0x18, 0x18, 0x18, 0xf0}, /* j */ |
| {0xc0, 0xc0, 0xcc, 0xd8, 0xf0, 0xd8, 0xcc, 0x00}, /* k */ |
| {0x38, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3c, 0x00}, /* l */ |
| {0x00, 0x00, 0xcc, 0xfe, 0xd6, 0xc6, 0xc6, 0x00}, /* m */ |
| {0x00, 0x00, 0xfc, 0xc6, 0xc6, 0xc6, 0xc6, 0x00}, /* n */ |
| {0x00, 0x00, 0x7c, 0xc6, 0xc6, 0xc6, 0x7c, 0x00}, /* o */ |
| {0x00, 0x00, 0xfc, 0xc6, 0xc6, 0xe6, 0xdc, 0xc0}, /* p */ |
| {0x00, 0x00, 0x7e, 0xc6, 0xc6, 0xce, 0x76, 0x06}, /* q */ |
| {0x00, 0x00, 0x6e, 0x70, 0x60, 0x60, 0x60, 0x00}, /* r */ |
| {0x00, 0x00, 0x7c, 0xc0, 0x7c, 0x06, 0xfc, 0x00}, /* s */ |
| {0x30, 0x30, 0x7c, 0x30, 0x30, 0x30, 0x1c, 0x00}, /* t */ |
| {0x00, 0x00, 0xc6, 0xc6, 0xc6, 0xc6, 0x7e, 0x00}, /* u */ |
| {0x00, 0x00, 0xc6, 0xc6, 0xc6, 0x6c, 0x38, 0x00}, /* v */ |
| {0x00, 0x00, 0xc6, 0xc6, 0xd6, 0xfe, 0x6c, 0x00}, /* w */ |
| {0x00, 0x00, 0xc6, 0x6c, 0x38, 0x6c, 0xc6, 0x00}, /* x */ |
| {0x00, 0x00, 0xc6, 0xc6, 0xce, 0x76, 0x06, 0x7c}, /* y */ |
| {0x00, 0x00, 0xfc, 0x18, 0x30, 0x60, 0xfc, 0x00}, /* z */ |
| {0x0e, 0x18, 0x18, 0x70, 0x18, 0x18, 0x0e, 0x00}, /* { */ |
| {0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00}, /* | */ |
| {0xe0, 0x30, 0x30, 0x1c, 0x30, 0x30, 0xe0, 0x00}, /* } */ |
| {0x00, 0x00, 0x70, 0x9a, 0x0e, 0x00, 0x00, 0x00}, /* ~ */ |
| {0x00, 0x00, 0x18, 0x3c, 0x66, 0xff, 0x00, 0x00} /* Ascii 127 */ |
| }; |
| /*@=charint@*/ |
| |
| void |
| GifDrawText8x8(SavedImage *Image, |
| const int x, const int y, |
| const char *legend, |
| const int color) |
| { |
| int i, j; |
| int base; |
| const char *cp; |
| |
| for (i = 0; i < GIF_FONT_HEIGHT; i++) { |
| base = Image->ImageDesc.Width * (y + i) + x; |
| |
| for (cp = legend; *cp; cp++) |
| for (j = 0; j < GIF_FONT_WIDTH; j++) { |
| if (GifAsciiTable8x8[(short)(*cp)][i] & (1 << (GIF_FONT_WIDTH - j))) |
| Image->RasterBits[base] = color; |
| base++; |
| } |
| } |
| } |
| |
| void |
| GifDrawBox(SavedImage *Image, |
| const int x, const int y, |
| const int w, const int d, |
| const int color) |
| { |
| int j, base = Image->ImageDesc.Width * y + x; |
| |
| for (j = 0; j < w; j++) |
| Image->RasterBits[base + j] = |
| Image->RasterBits[base + (d * Image->ImageDesc.Width) + j] = color; |
| |
| for (j = 0; j < d; j++) |
| Image->RasterBits[base + j * Image->ImageDesc.Width] = |
| Image->RasterBits[base + j * Image->ImageDesc.Width + w] = color; |
| } |
| |
| void |
| GifDrawRectangle(SavedImage *Image, |
| const int x, const int y, |
| const int w, const int d, |
| const int color) |
| { |
| unsigned char *bp = Image->RasterBits + Image->ImageDesc.Width * y + x; |
| int i; |
| |
| for (i = 0; i < d; i++) |
| memset(bp + (i * Image->ImageDesc.Width), color, (size_t)w); |
| } |
| |
| void |
| GifDrawBoxedText8x8(SavedImage *Image, |
| const int x, const int y, |
| const char *legend, |
| const int border, |
| const int bg, const int fg) |
| { |
| int j = 0, LineCount = 0, TextWidth = 0; |
| const char *cp; |
| char *dup; |
| |
| /* compute size of text to box */ |
| for (cp = legend; *cp; cp++) |
| if (*cp == '\r') { |
| if (j > TextWidth) |
| TextWidth = j; |
| j = 0; |
| LineCount++; |
| } else if (*cp != '\t') |
| ++j; |
| LineCount++; /* count last line */ |
| if (j > TextWidth) /* last line might be longer than any previous */ |
| TextWidth = j; |
| |
| /* draw the text */ |
| dup = malloc(strlen(legend)+1); |
| /* FIXME: should return bad status, but that would require API change */ |
| if (dup != NULL) { |
| int i = 0; |
| /* fill the box */ |
| GifDrawRectangle(Image, x + 1, y + 1, |
| border + TextWidth * GIF_FONT_WIDTH + border - 1, |
| border + LineCount * GIF_FONT_HEIGHT + border - 1, bg); |
| (void)strcpy(dup, (char *)legend); |
| cp = strtok((char *)dup, "\r\n"); |
| do { |
| int leadspace = 0; |
| |
| if (cp[0] == '\t') |
| leadspace = (TextWidth - strlen(++cp)) / 2; |
| |
| GifDrawText8x8(Image, x + border + (leadspace * GIF_FONT_WIDTH), |
| y + border + (GIF_FONT_HEIGHT * i++), cp, fg); |
| cp = strtok((char *)NULL, "\r\n"); |
| } while (cp); |
| (void)free((void *)dup); |
| |
| /* outline the box */ |
| GifDrawBox(Image, x, y, border + TextWidth * GIF_FONT_WIDTH + border, |
| border + LineCount * GIF_FONT_HEIGHT + border, fg); |
| } |
| } |
| |
| /* end */ |
