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Diffstat (limited to 'src/cmap.cxx')
| -rw-r--r-- | src/cmap.cxx | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/cmap.cxx b/src/cmap.cxx new file mode 100644 index 000000000..e98b765b5 --- /dev/null +++ b/src/cmap.cxx @@ -0,0 +1,120 @@ +// This program produces the contents of "fl_cmap.h" as stdout + +// #include <gl/gl.h> +#include <stdio.h> + +// This table is initialized with color values I got by reading the +// colormap on an IRIX 4.3 machine: + +// "full intensity colors" have been turned down some to make white +// background less intense by default. The hope is that this will make +// fltk programs more friendly on color-adjusted screens. If you want +// pure colors you should get them out of the colormap. + +#define III 244 // maximum intensity of the basic colors + +static short cmap[256][3] = { +// 3-bit colormap: + { 0, 0, 0}, // black + {III, 0, 0}, // red + { 0,III, 0}, // green + {III,III, 0}, // yellow + { 0, 0,III}, // blue + {III, 0,III}, // magenta + { 0,III,III}, // cyan + {III,III,III}, // white +// pastel versions of those colors: + { 85, 85, 85}, // 1/3 gray + {198,113,113}, // salmon? pale red? + {113,198,113}, // pale green + {142,142, 56}, // khaki + {113,113,198}, // pale blue + {142, 56,142}, // purple, orchid, pale magenta + { 56,142,142}, // cadet blue, aquamarine, pale cyan + {170,170,170}, // 2/3 gray +// These next 16 are the FL_FREE_COLOR area. For compatability with +// some existing DD programs, I prefill them with the random colors +// you get on a 5.3 machine: + { 16, 16, 16}, + {128, 40,128}, + {198, 30, 30}, + { 66, 30, 30}, + {176,140,140}, + { 0, 20, 20}, + { 20, 10, 10}, + { 40, 20, 20}, + { 60, 30, 30}, + { 0, 80, 80}, + { 0, 40, 40}, + { 20, 20, 0}, + { 40, 40, 0}, + { 80, 80, 10}, + {150,150, 20}, + {160, 10, 10}, +// The rest of the colormap is a gray ramp and table, filled in below: +}; + +// This is Fl::background from Fl_get_system_colors.C, with modifications: + +#define FL_GRAY_RAMP 32 +#define FL_NUM_GRAY 24 +#define FL_GRAY 49 // old value is 47 +typedef unsigned char uchar; +#include <math.h> + +void background(uchar r, uchar g, uchar b) { + // replace the gray ramp so that color 47 (by default 2/3) is this color + if (!r) r = 1; else if (r==255) r = 254; + double powr = log(r/255.0)/log((FL_GRAY-FL_GRAY_RAMP)/(FL_NUM_GRAY-1.0)); + if (!g) g = 1; else if (g==255) g = 254; + double powg = log(g/255.0)/log((FL_GRAY-FL_GRAY_RAMP)/(FL_NUM_GRAY-1.0)); + if (!b) b = 1; else if (b==255) b = 254; + double powb = log(b/255.0)/log((FL_GRAY-FL_GRAY_RAMP)/(FL_NUM_GRAY-1.0)); + for (int i = 0; i < FL_NUM_GRAY; i++) { + double gray = i/(FL_NUM_GRAY-1.0); + cmap[i+FL_GRAY_RAMP][0] = uchar(pow(gray,powr)*255+.5); + cmap[i+FL_GRAY_RAMP][1] = uchar(pow(gray,powg)*255+.5); + cmap[i+FL_GRAY_RAMP][2] = uchar(pow(gray,powb)*255+.5); + } +} + +int main() { + int i,r,g,b; +#if 0 + /* Read colormap colors into internal table */ + long cmwin; + noport(); + cmwin = winopen("CM"); + for (i=0; i<256; i++) + getmcolor(i,&cmap[i][0],&cmap[i][1],&cmap[i][2]); + winclose(cmwin); +#endif +// overwrite the X allocation area with one color so people are +// discouraged from using it: + for (i=16; i<32; i++) {cmap[i][0]=cmap[i][1]=cmap[i][2] = 85;} + + // fill in the gray ramp: + background(0xc0, 0xc0, 0xc0); // microsoft colors + // background(cmap[15][0],cmap[15][1],cmap[15][2]); // old fltk colors + // copy the 1/3 and 2/3 gray to the closest locations in gray ramp: + cmap[39][0] = cmap[39][1] = cmap[39][2] = cmap[8][0]; + cmap[47][0] = cmap[47][1] = cmap[47][2] = cmap[15][0]; + + // fill in the color cube + i = 56; + for (b=0; b<5; b++) + for (r=0; r<5; r++) + for (g=0; g<8; g++) { + cmap[i][0] = r*255/4; + cmap[i][1] = g*255/7; + cmap[i][2] = b*255/4; + i++; + } + + for (i=0; i<256; i++) { + printf("\t0x%02x%02x%02x00",cmap[i][0],cmap[i][1],cmap[i][2]); + if (i < 255) printf(",\n"); + } + printf("\n"); + return 0; +} |