git.sur5r.net Git - i3/i3/blob - i3bar/src/xcb.c

   1 #include <xcb/xcb.h>
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5
   6 #include "xcb.h"
   7 #include "outputs.h"
   8 #include "workspaces.h"
   9
  10 xcb_intern_atom_cookie_t atom_cookies[NUM_ATOMS];
  11
  12 uint32_t get_colorpixel(const char *s) {
  13         char strings[3][3] = { { s[0], s[1], '\0'} ,
  14                                { s[2], s[3], '\0'} ,
  15                                { s[4], s[5], '\0'} };
  16         uint8_t r = strtol(strings[0], NULL, 16);
  17         uint8_t g = strtol(strings[1], NULL, 16);
  18         uint8_t b = strtol(strings[2], NULL, 16);
  19         return (r << 16 | g << 8 | b);
  20 }
  21
  22 void handle_xcb_event(xcb_generic_event_t *event) {
  23         switch (event->response_type & ~0x80) {
  24                 case XCB_EXPOSE:
  25                         draw_buttons();
  26                         break;
  27         }
  28 }
  29
  30 int get_string_width(char *string) {
  31         xcb_query_text_extents_cookie_t cookie;
  32         xcb_query_text_extents_reply_t *reply;
  33         xcb_generic_error_t *error;
  34         int width;
  35
  36         cookie = xcb_query_text_extents(xcb_connection, xcb_font, strlen(string), (xcb_char2b_t *)string);
  37         if ((reply= xcb_query_text_extents_reply(xcb_connection, cookie, &error)) == NULL) {
  38                 printf("ERROR: Could not get text extents!");
  39                 return 7;
  40         }
  41
  42         width = reply->overall_width;
  43         free(reply);
  44         return width;
  45 }
  46
  47 void init_xcb() {
  48         /* FIXME: xcb_connect leaks Memory */
  49         xcb_connection = xcb_connect(NULL, NULL);
  50         if (xcb_connection_has_error(xcb_connection)) {
  51                 printf("Cannot open display\n");
  52                 exit(EXIT_FAILURE);
  53         }
  54         printf("Connected to xcb\n");
  55
  56         /* We have to request the atoms we need */
  57         #define ATOM_DO(name) atom_cookies[name] = xcb_intern_atom(xcb_connection, 0, strlen(#name), #name);
  58         #include "xcb_atoms.def"
  59
  60         xcb_screens = xcb_setup_roots_iterator(xcb_get_setup(xcb_connection)).data;
  61         xcb_root = xcb_screens->root;
  62
  63         xcb_font = xcb_generate_id(xcb_connection);
  64         char *fontname = "-misc-fixed-medium-r-semicondensed--12-110-75-75-c-60-iso10646-1";
  65         xcb_open_font(xcb_connection,
  66                       xcb_font,
  67                       strlen(fontname),
  68                       fontname);
  69
  70         xcb_list_fonts_with_info_cookie_t cookie;
  71         cookie = xcb_list_fonts_with_info(xcb_connection,
  72                                           1,
  73                                           strlen(fontname),
  74                                           fontname);
  75         xcb_list_fonts_with_info_reply_t *reply;
  76         reply = xcb_list_fonts_with_info_reply(xcb_connection,
  77                                                cookie,
  78                                                NULL);
  79         font_height = reply->font_ascent + reply->font_descent;
  80         printf("Calculated Font-height: %d\n", font_height);
  81
  82
  83         /* FIXME: Maybe we can push that further backwards */
  84         get_atoms();
  85 }
  86
  87 void clean_xcb() {
  88         xcb_disconnect(xcb_connection);
  89 }
  90
  91 void get_atoms() {
  92         xcb_intern_atom_reply_t* reply;
  93         #define ATOM_DO(name)   reply = xcb_intern_atom_reply(xcb_connection, atom_cookies[name], NULL); \
  94                                 atoms[name] = reply->atom; \
  95                                 free(reply);
  96
  97         #include "xcb_atoms.def"
  98         printf("Got Atoms\n");
  99 }
 100
 101 void destroy_windows() {
 102         i3_output *walk;
 103         if (outputs == NULL) {
 104                 return;
 105         }
 106         SLIST_FOREACH(walk, outputs, slist) {
 107                 if (walk->bar == XCB_NONE) {
 108                         continue;
 109                 }
 110                 xcb_destroy_window(xcb_connection, walk->bar);
 111                 walk->bar = XCB_NONE;
 112         }
 113 }
 114
 115 void create_windows() {
 116         uint32_t mask;
 117         uint32_t values[2];
 118
 119         i3_output *walk;
 120         SLIST_FOREACH(walk, outputs, slist) {
 121                 if (!walk->active) {
 122                         continue;
 123                 }
 124                 printf("Creating Window for output %s\n", walk->name);
 125
 126                 walk->bar = xcb_generate_id(xcb_connection);
 127                 mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
 128                 values[0] = xcb_screens->black_pixel;
 129                 values[1] = XCB_EVENT_MASK_EXPOSURE;
 130                 xcb_create_window(xcb_connection,
 131                                   xcb_screens->root_depth,
 132                                   walk->bar,
 133                                   xcb_root,
 134                                   walk->rect.x, walk->rect.y,
 135                                   walk->rect.w, font_height + 6,
 136                                   1,
 137                                   XCB_WINDOW_CLASS_INPUT_OUTPUT,
 138                                   xcb_screens->root_visual,
 139                                   mask,
 140                                   values);
 141
 142                 xcb_change_property(xcb_connection,
 143                                     XCB_PROP_MODE_REPLACE,
 144                                     walk->bar,
 145                                     atoms[_NET_WM_WINDOW_TYPE],
 146                                     atoms[ATOM],
 147                                     32,
 148                                     1,
 149                                     (unsigned char*) &atoms[_NET_WM_WINDOW_TYPE_DOCK]);
 150
 151                 walk->bargc = xcb_generate_id(xcb_connection);
 152                 mask = XCB_GC_FONT;
 153                 values[0] = xcb_font;
 154                 xcb_create_gc(xcb_connection,
 155                               walk->bargc,
 156                               walk->bar,
 157                               mask,
 158                               values);
 159
 160                 xcb_map_window(xcb_connection, walk->bar);
 161         }
 162         xcb_flush(xcb_connection);
 163 }
 164
 165 void draw_buttons() {
 166         printf("Drawing Buttons...\n");
 167         int i = 0;
 168         i3_output *outputs_walk;
 169         SLIST_FOREACH(outputs_walk, outputs, slist) {
 170                 if (!outputs_walk->active) {
 171                         printf("Output %s inactive, skipping...\n", outputs_walk->name);
 172                         continue;
 173                 }
 174                 if (outputs_walk->bar == XCB_NONE) {
 175                         create_windows();
 176                 }
 177                 uint32_t color = get_colorpixel("000000");
 178                 xcb_change_gc(xcb_connection,
 179                               outputs_walk->bargc,
 180                               XCB_GC_FOREGROUND,
 181                               &color);
 182                 xcb_rectangle_t rect = { 0, 0, outputs_walk->rect.w, font_height + 6 };
 183                 xcb_poly_fill_rectangle(xcb_connection,
 184                                         outputs_walk->bar,
 185                                         outputs_walk->bargc,
 186                                         1,
 187                                         &rect);
 188                 i3_ws *ws_walk;
 189                 TAILQ_FOREACH(ws_walk, outputs_walk->workspaces, tailq) {
 190                         printf("Drawing Button for WS %s...\n", ws_walk->name);
 191                         uint32_t color = get_colorpixel("240000");
 192                         if (ws_walk->visible) {
 193                                 color = get_colorpixel("480000");
 194                         }
 195                         if (ws_walk->urgent) {
 196                                 printf("WS %s is urgent!\n", ws_walk->name);
 197                                 color = get_colorpixel("002400");
 198                         }
 199                         xcb_change_gc(xcb_connection,
 200                                       outputs_walk->bargc,
 201                                       XCB_GC_FOREGROUND,
 202                                       &color);
 203                         xcb_change_gc(xcb_connection,
 204                                       outputs_walk->bargc,
 205                                       XCB_GC_BACKGROUND,
 206                                       &color);
 207                         xcb_rectangle_t rect = { i + 1, 1, ws_walk->name_width + 8, font_height + 4 };
 208                         xcb_poly_fill_rectangle(xcb_connection,
 209                                                 outputs_walk->bar,
 210                                                 outputs_walk->bargc,
 211                                                 1,
 212                                                 &rect);
 213                         color = get_colorpixel("FFFFFF");
 214                         xcb_change_gc(xcb_connection,
 215                                       outputs_walk->bargc,
 216                                       XCB_GC_FOREGROUND,
 217                                       &color);
 218                         xcb_image_text_8(xcb_connection,
 219                                          strlen(ws_walk->name),
 220                                          outputs_walk->bar,
 221                                          outputs_walk->bargc,
 222                                          i + 5, font_height + 1,
 223                                          ws_walk->name);
 224                         i += 10 + ws_walk->name_width;
 225                 }
 226                 i = 0;
 227         }
 228         xcb_flush(xcb_connection);
 229 }