--- /dev/null
+//
+//cc progress.m -framework AppKit -Wall; ./a.out >/tmp/xx.c; cc /tmp/xx.c -Wall; cat /tmp/xx.c
+
+#import <Foundation/Foundation.h>
+#import <AppKit/AppKit.h>
+#import <stdlib.h>
+#import <stdint.h>
+#include <getopt.h>
+#import <string.h>
+
+
+#define MAX_COLORS 256
+
+typedef struct {
+ uint8_t r;
+ uint8_t g;
+ uint8_t b;
+} pixel_t;
+
+static uint32_t clut_size = 0;
+static pixel_t clut[MAX_COLORS];
+
+static uint8_t
+lookup_color(uint8_t r, uint8_t g, uint8_t b)
+{
+ unsigned int i;
+
+ for (i = 0; i < clut_size; i++) {
+ if (clut[i].r == r &&
+ clut[i].g == g &&
+ clut[i].b == b) {
+ return i;
+ }
+ }
+ if (clut_size >= MAX_COLORS) {
+ printf("Image must have no more than 256 unique pixel colors\n");
+ exit(1);
+ }
+ clut[clut_size].r = r;
+ clut[clut_size].g = g;
+ clut[clut_size].b = b;
+
+ return (uint8_t)clut_size++;;
+}
+
+void print_buffer (uint8_t * buffer, size_t width, size_t height, size_t row)
+{
+ printf("{");
+ for (int y = 0; y < height; y++)
+ {
+ printf("\n ");
+ for (int x = 0; x < width; x++)
+ {
+ printf("0x%02x,", buffer[x + y*row]);
+ }
+ }
+ printf("\n}");
+}
+
+int onefile(const char * filename, int w, int h)
+{
+ int size;
+ uint8_t color;
+
+ FILE *file;
+ if ((file = fopen(filename, "r")) == NULL) {
+ fclose(file);
+ printf ("ERROR!!! can not open resource file [%s]\n", filename);
+ return 1;
+ }
+ fclose(file);
+
+ NSString* filePath = [NSString stringWithUTF8String:filename];
+ NSData* fileData = [NSData dataWithContentsOfFile:filePath];
+ NSBitmapImageRep* bitmapImageRep = [[NSBitmapImageRep alloc] initWithData:fileData];
+ NSSize imageSize = [bitmapImageRep size];
+
+ size_t image_length = (int)imageSize.width * (int)imageSize.height;
+ uint8_t* uncompressed_color_buffer = malloc(image_length);
+ uint8_t* uncompressed_alpha_buffer = malloc(image_length);
+
+ bzero(clut, sizeof(clut));
+
+ clut_size = 0;
+ size = 0;
+
+ for (int y = 0; y < imageSize.height; y++) {
+ for (int x = 0; x < imageSize.width; x++) {
+ NSUInteger pixel[4] = {};
+ [bitmapImageRep getPixel:pixel atX:x y:y];
+
+ color = lookup_color((uint8_t)pixel[0],
+ (uint8_t)pixel[1],
+ (uint8_t)pixel[2]);
+
+ assert(color <= 1);
+ uint8_t alpha = pixel[3];
+ assert((alpha != 0) == color);
+
+ alpha = 255 - alpha;
+
+ uncompressed_color_buffer[size] = color;
+ uncompressed_alpha_buffer[size] = alpha;
+ size++;
+ }
+ }
+
+ assert(clut_size == 2);
+ assert(clut[0].r == 0);
+ assert(clut[0].g == 0);
+ assert(clut[0].b == 0);
+ assert(clut[1].r == 0xff);
+ assert(clut[1].g == 0xff);
+ assert(clut[1].b == 0xff);
+
+ printf("\n");
+
+ assert(w <= imageSize.width);
+ assert(h <= imageSize.height);
+
+ print_buffer (uncompressed_alpha_buffer, w, h, imageSize.width);
+
+ if (uncompressed_color_buffer != NULL) {
+ free (uncompressed_color_buffer);
+ }
+ if (uncompressed_alpha_buffer != NULL) {
+ free (uncompressed_alpha_buffer);
+ }
+
+ return 0;
+}
+
+
+int main (int argc, char * argv[])
+{
+ printf("#include <stdint.h>\n\n");
+
+
+ printf("\nstatic const unsigned char progressmeter_leftcap1x[2][%d * %d] = {", 9, 18);
+ onefile("ProgressBarFullLeftEndCap.png", 9, 18);
+ printf(",");
+ onefile("ProgressBarEmptyLeftEndCap.png", 9, 18);
+ printf("};\n");
+
+ printf("\nstatic const unsigned char progressmeter_leftcap2x[2][4 * %d * %d] = {", 9, 18);
+ onefile("ProgressBarFullLeftEndCap@2x.png", 2*9, 2*18);
+ printf(",");
+ onefile("ProgressBarEmptyLeftEndCap@2x.png", 2*9, 2*18);
+ printf("};\n");
+
+ printf("\nstatic const unsigned char progressmeter_middle1x[2][%d * %d] = {", 1, 18);
+ onefile("ProgressBarFullMiddle.png", 1, 18);
+ printf(",");
+ onefile("ProgressBarEmptyMiddle.png", 1, 18);
+ printf("};\n");
+
+ printf("\nstatic const unsigned char progressmeter_middle2x[2][2 * %d * %d] = {", 1, 18);
+ onefile("ProgressBarFullMiddle@2x.png", 1, 2*18);
+ printf(",");
+ onefile("ProgressBarEmptyMiddle@2x.png", 1, 2*18);
+ printf("};\n");
+
+ printf("\nstatic const unsigned char progressmeter_rightcap1x[2][%d * %d] = {", 9, 18);
+ onefile("ProgressBarFullRightEndCap.png", 9, 18);
+ printf(",");
+ onefile("ProgressBarEmptyRightEndCap.png", 9, 18);
+ printf("};\n");
+
+ printf("\nstatic const unsigned char progressmeter_rightcap2x[2][4 * %d * %d] = {", 9, 18);
+ onefile("ProgressBarFullRightEndCap@2x.png", 2*9, 2*18);
+ printf(",");
+ onefile("ProgressBarEmptyRightEndCap@2x.png", 2*9, 2*18);
+ printf("};\n");
+
+
+}
+