165 lines
4.0 KiB
C
165 lines
4.0 KiB
C
#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#define PROMPT_BUFSIZE 32
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#define X_ENTER_KEY 36
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#define X_Q_KEY 24
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#define X_W_KEY 25
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#define X_E_KEY 26
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#define X_A_KEY 38
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#define X_S_KEY 39
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#define X_D_KEY 40
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int main(void) {
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char text_prompt_buffer[PROMPT_BUFSIZE] = "";
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Display *display;
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Window window;
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XEvent event;
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Colormap colormap;
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int screen;
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XColor background_color;
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XColor foreground_color;
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XTextItem text_prompt;
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XGCValues text_prompt_formatting;
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GC text_prompt_gc;
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int text_buffer_space;
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int is_prompt = 0;
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unsigned int winsize_x;
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unsigned int winsize_y;
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XFontStruct* font;
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XWindowAttributes win_info;
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if((display = XOpenDisplay(NULL)) == NULL) {
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printf("Couldn't open display due to fatal error: %s\n", strerror(errno));
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exit(errno);
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}
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screen = DefaultScreen(display);
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//background colormap
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colormap = DefaultColormap(display, screen);
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background_color.red = 1000;
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background_color.green = 0;
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background_color.blue = 60000;
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//text colormap
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foreground_color.red = 0xffff - background_color.red;
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foreground_color.green = 0xffff - background_color.green;
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foreground_color.blue = 0xffff - background_color.blue;
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XAllocColor(display, colormap, &background_color);
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XAllocColor(display, colormap, &foreground_color);
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window = XCreateSimpleWindow(display, RootWindow(display, screen),
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10, 10,
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100, 100,
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0,
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background_color.pixel,
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background_color.pixel); //last arg is color
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XMapWindow(display, window);
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XSelectInput(display, window, KeyPressMask | ExposureMask);
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//text struct
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text_prompt.chars = text_prompt_buffer;
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text_prompt.nchars = strlen(text_prompt_buffer);
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text_prompt.delta = 0; //what?
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text_prompt.font = None;
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//text formatting struct
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text_prompt_formatting.foreground = foreground_color.pixel;
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text_prompt_gc = XCreateGC(display, window, GCForeground | GCLineWidth, &text_prompt_formatting);
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font = XLoadQueryFont(display, "-*-helvetica-medium-r-normal-*-20-*");
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XSetFont(display, text_prompt_gc, font->fid);
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for(;;) {
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XNextEvent(display, &event);
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XGetWindowAttributes(display, window, &win_info);
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winsize_x = win_info.width;
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winsize_y = win_info.height;
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switch (event.type) {
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case KeyPress:
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printf("%i\n", event.xkey.keycode);
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if(is_prompt) {
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XClearWindow(display, window);
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text_buffer_space = PROMPT_BUFSIZE - text_prompt.nchars;
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if(event.xkey.keycode == X_ENTER_KEY) {
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if(text_buffer_space < PROMPT_BUFSIZE) {
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text_prompt.nchars--;
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}
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}
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else if(text_buffer_space > 0) {
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text_prompt.nchars += XLookupString(&event.xkey, text_prompt_buffer + text_prompt.nchars, text_buffer_space, NULL, NULL);
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}
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}
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else {
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switch(event.xkey.keycode) {
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case X_ENTER_KEY:
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break;
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case X_Q_KEY:
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printf("%i\n", background_color.red);
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XFreeColors(display, colormap, &background_color.pixel, 1, NULL);
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background_color.red += 1000;
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printf("%i\n", background_color.red);
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XAllocColor(display, colormap, &background_color);
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break;
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case X_W_KEY:
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break;
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case X_E_KEY:
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break;
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case X_A_KEY:
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break;
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case X_S_KEY:
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break;
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case X_D_KEY:
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break;
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default:
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break;
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}
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}
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XDrawText(display, window, text_prompt_gc, 10, winsize_y - 10, &text_prompt, 1);
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break;
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case Expose:
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XDrawText(display, window, text_prompt_gc, 10, winsize_y - 10, &text_prompt, 1);
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printf("exposed\n");
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break;
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default:
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break;
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}
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}
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return 0;
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}
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