new file: bin/color

modified:   src/color.c
	new file:   src/color.h

src/color.c

@@ -5,19 +5,59 @@
 #include <string.h>
 #include <errno.h>
 #include <math.h>
+#include <signal.h>
 
 #include "color.h"
 
 
 
-int add_color(color_info color) {
+int add_color(update_info *color, int key) {
-
+  XFreeColors(color->display, color->colormap, &color->background.pixel, 1, 0);
+  XFreeColors(color->display, color->colormap, &color->foreground.pixel, 1, 0);
+  printf("%i\n", color->channel_step);
+  switch(key){ 
+    case X_Q_KEY:
+      color->background.red += color->channel_step;
+      break;
+    case X_W_KEY:
+      color->background.green += color->channel_step;
+      printf("%i\n", color->background.green);
+      break;
+    case X_E_KEY:
+      color->background.blue += color->channel_step;
+      break;
+    case X_A_KEY:
+      color->background.red -= color->channel_step;
+      break;
+    case X_S_KEY:
+      color->background.green -= color->channel_step;
+      break;
+    case X_D_KEY:
+      color->background.blue -= color->channel_step;
+      break;
+    default:
+      printf("what the actual fuck is wrong with your program you cunt\n");
+      break;
+  }
+  color->foreground.red = 0xffff - color->background.red;
+  color->foreground.green = 0xffff - color->background.green;
+  color->foreground.blue = 0xffff - color->background.blue;
+  XAllocColor(color->display, color->colormap, &color->foreground);
+  XAllocColor(color->display, color->colormap, &color->background);
 }
 
+int redraw_display(update_info *display_summary, XTextItem *text_prompt, GC *gc, unsigned int textpos_y) {
+  XClearWindow(display_summary->display, display_summary->window);
+  XSetWindowBackground(display_summary->display, display_summary->window, display_summary->background.pixel);
+  XSetForeground(display_summary->display, *gc, display_summary->foreground.pixel);
+  printf("%i\n", display_summary->foreground.red);
+  XDrawText(display_summary->display, display_summary->window, *gc, TEXT_CORNER_OFFSET, textpos_y, text_prompt, 1);
+  
+}
 
 int main(void) {
 
-  char text_prompt_buffer[PROMPT_BUFSIZE] = ""; 
+  char text_prompt_buffer[PROMPT_BUFSIZE] = "Q/W/E increases R/G/B. A/S/D decreases R/G/B. Enter allows exact value. Press Escape to dismiss."; 
 
    Display *display;
    Window window;
@@ -53,9 +93,9 @@ int main(void) {
    
    //background colormap
    colormap = DefaultColormap(display, screen);
-   background_color.red = 1000;
+   background_color.red = 0;
    background_color.green = 0;
-   background_color.blue = 60000;
+   background_color.blue = 0;
 
    //text colormap
    foreground_color.red = 0xffff - background_color.red;
@@ -71,7 +111,7 @@ int main(void) {
 
    window = XCreateSimpleWindow(display, RootWindow(display, screen), 
        10, 10, 
-       100, 100, 
+       1920, 1080, 
        0,
        background_color.pixel,
        background_color.pixel); //last arg is color
@@ -79,7 +119,8 @@ int main(void) {
    XMapWindow(display, window);
    XSelectInput(display, window, KeyPressMask | ExposureMask);
    XGetWindowAttributes(display, window, &win_info); 
-   color_step = 0xffff / pow(2, (win_info.depth / 3)) ;
+   //TODO: this math is techincly one off in very, very specific scenarios
+   color_step = 0xffff / pow(2, (win_info.depth / 3)) + 0.5; 
 
 
 
@@ -112,18 +153,26 @@ int main(void) {
      XNextEvent(display, &event);
      switch (event.type) {
        case KeyPress:
+         printf("%i\n", event.xkey.keycode);
          if(is_prompt) {
            XClearWindow(display, window);
 
            text_buffer_space = PROMPT_BUFSIZE - text_prompt.nchars;
-
+           switch(event.xkey.keycode) {
-           if(event.xkey.keycode == X_BACKSPACE) {
+             case X_BACKSPACE: 
-             if(text_buffer_space < PROMPT_BUFSIZE) {
+               if(text_buffer_space < PROMPT_BUFSIZE) {
-                text_prompt.nchars--;
+                  text_prompt.nchars--;
-             }
+               }
-           }
+               break;
-           else if(text_buffer_space > 0) { 
+             case X_ESCAPE_KEY:
-             text_prompt.nchars += XLookupString(&event.xkey, text_prompt_buffer + text_prompt.nchars, text_buffer_space, NULL, NULL);
+               text_prompt.nchars = 0;
+               is_prompt = 0;
+               break;
+             default:
+               if(text_buffer_space > 0) { 
+                 text_prompt.nchars += XLookupString(&event.xkey, text_prompt_buffer + text_prompt.nchars, text_buffer_space, NULL, NULL);
+               }
+               break;
            }
            XDrawText(display, window, text_prompt_gc, TEXT_CORNER_OFFSET, textpos_y, &text_prompt, 1);
          }
@@ -131,31 +180,20 @@ int main(void) {
            switch(event.xkey.keycode) {
              case X_ENTER_KEY:
                break;
-             case X_Q_KEY:
+             case X_Q_KEY:        //if anyone is reading this, on a scale from 1-10,
-               printf("%i\n", channel_step);
+             case X_W_KEY:        //just how ugly is this?
-               XFreeColors(display, colormap, &background_color.pixel, 1, 0); 
+             case X_E_KEY:        //I don't know why, but it feels gross.
-               XFreeColors(display, colormap, &foreground_color.pixel, 1, 0); 
+             case X_A_KEY:        //to be fair, most of this code is just for me.
-               background_color.red += channel_step;
+             case X_S_KEY:        //otherwise, it'd be way cleaner.
-               foreground_color.red = 0xffff - background_color.red; //we could just sub channel_step, but eh. i donno.
-               printf("----%i\n", background_color.red);
-               XAllocColor(display, colormap, &foreground_color);
-               XAllocColor(display, colormap, &background_color);
-               XClearWindow(display, window);
-               XSetWindowBackground(display, window, background_color.pixel);
-               break;
-             case X_W_KEY:
-               break;
-             case X_E_KEY:
-               break;
-             case X_A_KEY:
-               break;
-             case X_S_KEY:
-               break;
              case X_D_KEY:
+               add_color(&display_summary, event.xkey.keycode);
                break;
+             case X_ESCAPE_KEY:
+               text_prompt.nchars = 0;
              default:
                break; 
            }
+           redraw_display(&display_summary, &text_prompt, &text_prompt_gc, textpos_y);
          }
 
 
@@ -165,7 +203,7 @@ int main(void) {
        case Expose:
          XGetWindowAttributes(display, window, &win_info); 
          textpos_y = win_info.height - TEXT_CORNER_OFFSET;
-         XDrawText(display, window, text_prompt_gc, TEXT_CORNER_OFFSET, textpos_y, &text_prompt, 1);
+         redraw_display(&display_summary, &text_prompt, &text_prompt_gc, textpos_y);
          break;
        default:
          break;

src/color.h

@@ -0,0 +1,24 @@
+#define PROMPT_BUFSIZE 256
+
+#define X_ENTER_KEY   36
+#define X_BACKSPACE   22
+#define X_ESCAPE_KEY  9
+
+#define X_Q_KEY     24
+#define X_W_KEY     25
+#define X_E_KEY     26
+
+#define X_A_KEY     38
+#define X_S_KEY     39
+#define X_D_KEY     40
+
+#define TEXT_CORNER_OFFSET 25
+
+typedef struct {
+  Window window; 
+  Display *display;
+  Colormap colormap;
+  XColor background;
+  XColor foreground;
+  unsigned int channel_step;
+} update_info;