1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <math.h>
#define PROMPT_BUFSIZE 32
#define X_ENTER_KEY 36
#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
int main(void) {
char text_prompt_buffer[PROMPT_BUFSIZE] = "";
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 channel_step;
int is_prompt = 0;
unsigned int winsize_x;
unsigned int winsize_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 = 1000;
background_color.green = 0;
background_color.blue = 60000;
//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);
window = XCreateSimpleWindow(display, RootWindow(display, screen),
10, 10,
100, 100,
0,
background_color.pixel,
background_color.pixel); //last arg is color
XMapWindow(display, window);
XSelectInput(display, window, KeyPressMask | ExposureMask);
XGetWindowAttributes(display, window, &win_info);
channel_step = 0xffff / pow((win_info.depth / 3), 2) ;
//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);
for(;;) {
XNextEvent(display, &event);
XGetWindowAttributes(display, window, &win_info);
winsize_x = win_info.width;
winsize_y = win_info.height;
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;
if(event.xkey.keycode == X_ENTER_KEY) {
if(text_buffer_space < PROMPT_BUFSIZE) {
text_prompt.nchars--;
}
}
else if(text_buffer_space > 0) {
text_prompt.nchars += XLookupString(&event.xkey, text_prompt_buffer + text_prompt.nchars, text_buffer_space, NULL, NULL);
}
}
else {
printf("%i\n", win_info.depth);
switch(event.xkey.keycode) {
case X_ENTER_KEY:
break;
case X_Q_KEY:
printf("Before: %i\n", background_color.red);
XFreeColors(display, colormap, &background_color.pixel, 1, NULL);
printf("Step: %i\n", channel_step);
background_color.red += channel_step; //TODO: change me to depth
printf("After: %i\n", background_color.red);
XAllocColor(display, colormap, &background_color);
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:
break;
default:
break;
}
}
XDrawText(display, window, text_prompt_gc, 10, winsize_y - 10, &text_prompt, 1);
break;
case Expose:
XDrawText(display, window, text_prompt_gc, 10, winsize_y - 10, &text_prompt, 1);
printf("exposed\n");
break;
default:
break;
}
}
return 0;
}
|
