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#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <math.h>
#include <signal.h>
#include "color.h"
int add_color(update_info *color, int key) {
XFreeColors(color->display, color->colormap, &color->background->pixel, 1, 0);
switch(key){
case X_Q_KEY:
color->background->red += color->channel_step;
break;
case X_W_KEY:
color->background->green += color->channel_step;
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;
}
XAllocColor(color->display, color->colormap, color->background);
printf("Pixel:\t%x\nR:\t%x\nG:\t%x\nB:\t%x\n", color->background->pixel, color->background->red, color->background->green, color->background->blue);
}
void redraw_display(update_info *display_summary, XTextItem *text_prompt, GC *gc, unsigned int textpos_y) {
XFreeColors(display_summary->display, display_summary->colormap, &display_summary->foreground.pixel, 1, 0);
display_summary->foreground.red = 0xffff - display_summary->background->red;
display_summary->foreground.green = 0xffff - display_summary->background->green;
display_summary->foreground.blue = 0xffff - display_summary->background->blue;
XAllocColor(display_summary->display, display_summary->colormap, &display_summary->foreground);
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);
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] = "Q/W/E, A/S/D for RGB channels. [Enter] begins rgb prompt, [Space] for 24 bit integers, [Enter] for hex. Seperate channels with \"/\"";
char rgb_split_seperations[3][3];
Display *display;
Window window;
XEvent event;
Colormap colormap;
int screen;
XColor background_color;
XColor foreground_color;
XTextItem text_prompt;
XGCValues text_prompt_formatting;
GC text_prompt_gc;
int text_buffer_space;
unsigned int color_step;
int is_prompt = 0;
unsigned int textpos_y;
XFontStruct* font;
XWindowAttributes win_info;
if((display = XOpenDisplay(NULL)) == NULL) {
printf("Couldn't open display due to fatal error: %s\n", strerror(errno));
exit(errno);
}
screen = DefaultScreen(display);
//background colormap
colormap = DefaultColormap(display, screen);
background_color.red = 0;
background_color.green = 0;
background_color.blue = 0;
//text colormap
foreground_color.red = 0xffff - background_color.red;
foreground_color.green = 0xffff - background_color.green;
foreground_color.blue = 0xffff - background_color.blue;
XAllocColor(display, colormap, &background_color);
XAllocColor(display, colormap, &foreground_color);
XFreeColors(display, colormap, &background_color.pixel, 1, 0);
XParseColor(display, colormap, "rgb:0/0/ff", &background_color);
XAllocColor(display, colormap, &background_color);
XFreeColors(display, colormap, &background_color.pixel, 1, 0);
XAllocColor(display, colormap, &background_color);
window = XCreateSimpleWindow(display, RootWindow(display, screen),
10, 10,
1920, 1080,
0,
background_color.pixel,
background_color.pixel); //last arg is color
XMapWindow(display, window);
XSelectInput(display, window, KeyPressMask | ExposureMask);
XGetWindowAttributes(display, window, &win_info);
//TODO: this math is techincly one off in very, very specific scenarios
color_step = 0xffff / pow(2, (win_info.depth / 3)) + 0.5;
//text struct
text_prompt.chars = text_prompt_buffer;
text_prompt.nchars = strlen(text_prompt_buffer);
text_prompt.delta = 0; //what?
text_prompt.font = None;
//text formatting struct
text_prompt_formatting.foreground = foreground_color.pixel;
text_prompt_gc = XCreateGC(display, window, GCForeground | GCLineWidth, &text_prompt_formatting);
font = XLoadQueryFont(display, "-*-helvetica-medium-r-normal-*-20-*");
XSetFont(display, text_prompt_gc, font->fid);
XGetWindowAttributes(display, window, &win_info);
textpos_y = win_info.height - TEXT_CORNER_OFFSET;
update_info display_summary = {
.window = window,
.display = display,
.colormap = colormap,
.background = &background_color,
.foreground = foreground_color,
.channel_step = color_step
};
for(;;) {
XNextEvent(display, &event);
switch (event.type) {
case KeyPress:
if(is_prompt) {
XClearWindow(display, window);
text_buffer_space = PROMPT_BUFSIZE - text_prompt.nchars;
printf("%i\n", event.xkey.keycode);
switch(event.xkey.keycode) {
case X_BACKSPACE:
if(text_buffer_space < PROMPT_BUFSIZE) {
text_prompt.nchars--;
}
break;
case X_ESCAPE_KEY:
text_prompt.nchars = 0;
is_prompt = 0;
break;
case X_ENTER_KEY:
text_prompt_buffer[text_prompt.nchars + 1] = '\0';
XFreeColors(display, colormap, &background_color.pixel, 1, 0);
XParseColor(display, colormap, text_prompt_buffer, &background_color);
XAllocColor(display, colormap, &background_color);
is_prompt = 0;
text_prompt.nchars = 0;
redraw_display(&display_summary, &text_prompt, &text_prompt_gc, textpos_y);
break;
case X_SHIFT_KEY:
XFreeColors(display, colormap, &background_color.pixel, 1, 0);
str
background_color.red =
background_color.green =
background_color.blue =
printf("Pixel:\t%x\nR:\t%x\nG:\t%x\nB:\t%x\n", background_color.pixel, background_color.red, background_color.green, background_color.blue);
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);
}
else {
switch(event.xkey.keycode) {
case X_ENTER_KEY:
is_prompt = 1;
text_prompt.nchars = 4;
strcpy(text_prompt_buffer, "rgb:");
break;
case X_ESCAPE_KEY:
text_prompt.nchars = 0;
break;
case X_Q_KEY: // if anyone is reading this, on a scale from 1-10,
case X_W_KEY: // just how ugly is this?
case X_E_KEY: // I don't know why, but it feels gross.
case X_A_KEY: // to be fair, most of this code is just for me.
case X_S_KEY: // otherwise, it'd be way cleaner.
case X_D_KEY:
add_color(&display_summary, event.xkey.keycode);
break;
default:
break;
}
redraw_display(&display_summary, &text_prompt, &text_prompt_gc, textpos_y);
}
XDrawText(display, window, text_prompt_gc, TEXT_CORNER_OFFSET, textpos_y, &text_prompt, 1);
break;
case Expose:
XGetWindowAttributes(display, window, &win_info);
textpos_y = win_info.height - TEXT_CORNER_OFFSET;
redraw_display(&display_summary, &text_prompt, &text_prompt_gc, textpos_y);
break;
default:
break;
}
}
return 0;
}
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