display.c

   1 #include "efence.h"
   2
   3 #include "display.h"
   4 #include "screen.h"
   5 #include "list.h"
   6 #include "gettext.h"
   7 #include <stdlib.h>
   8 #include <assert.h>
   9 #include <string.h>
  10 #include <stdio.h>
  11
  12 #include <xcb/damage.h>
  13 #include <xcb/render.h>
  14 #include <xcb/xfixes.h>
  15 #include <xcb/composite.h>
  16
  17 typedef struct {
  18     xcb_atom_t               *atom;
  19     const char               *name;
  20     xcb_intern_atom_cookie_t  ck;
  21 } d_atom_query_t;
  22
  23 #define setup_extension(name) \
  24     xcb_##name##_query_version_cookie_t ck_##name;
  25
  26 #define find_extension_xfixes(dpy) &dpy->xfixes;
  27 #define find_extension_render(dpy) &dpy->render;
  28 #define find_extension_composite(dpy) &dpy->composite;
  29 #define find_extension_damage(dpy) &dpy->damage;
  30 #define find_extension_shape(dpy) &dpy->shape;
  31
  32 #define version_extension_xfixes \
  33   XCB_XFIXES_MAJOR_VERSION, XCB_XFIXES_MAJOR_VERSION
  34 #define version_extension_render \
  35   XCB_RENDER_MAJOR_VERSION, XCB_RENDER_MAJOR_VERSION
  36 #define version_extension_composite \
  37   XCB_COMPOSITE_MAJOR_VERSION, XCB_COMPOSITE_MAJOR_VERSION
  38 #define version_extension_damage \
  39   XCB_DAMAGE_MAJOR_VERSION, XCB_DAMAGE_MAJOR_VERSION
  40
  41 #define query_extension(dpy, name) \
  42 { \
  43     const xcb_query_extension_reply_t *rep;          \
  44     d_display_ext_t *ext; \
  45 \
  46     xcb_prefetch_extension_data(dpy->conn, &xcb_##name##_id);  \
  47     rep = xcb_get_extension_data(dpy->conn, &xcb_##name##_id); \
  48 \
  49     ext = find_extension_##name(dpy) \
  50     ext->present = rep && rep->present;          \
  51     ext->error   = rep ? rep->first_error : 0;   \
  52     ext->event   = rep ? rep->first_event : 0;   \
  53     ext->opcode  = rep ? rep->major_opcode : 0;  \
  54 }
  55
  56 #define query_extension_version(dpy, name) \
  57 { \
  58     d_display_ext_t *ext; \
  59 \
  60     ext = find_extension_##name(dpy) \
  61 \
  62     if (ext->present) \
  63         ck_##name = xcb_##name##_query_version(dpy->conn, \
  64                                                version_extension_##name); \
  65 }
  66
  67 #define query_extension_version_no_client_version(dpy, name) \
  68 { \
  69     d_display_ext_t *ext; \
  70 \
  71     ext = find_extension_##name(dpy) \
  72 \
  73     if (ext->present) \
  74         ck_##name = xcb_##name##_query_version(dpy->conn); \
  75 }
  76
  77 #define reply_extension(dpy, name) \
  78 { \
  79     xcb_##name##_query_version_reply_t *rep; \
  80     d_display_ext_t *ext; \
  81 \
  82     ext = find_extension_##name(dpy) \
  83     if (ext->present) { \
  84         rep = xcb_##name##_query_version_reply(dpy->conn, ck_##name, NULL); \
  85         if (rep) { \
  86             ext->major_version = rep->major_version; \
  87             ext->minor_version = rep->minor_version; \
  88             free(rep); \
  89         } \
  90         else { \
  91             printf("error querying the %s extension's version\n", "##name##");\
  92             ext->present = FALSE; \
  93         } \
  94     } \
  95 }
  96
  97 static void
  98 query_atom(d_display_t *dpy, d_atom_query_t *q)
  99 {
 100     q->ck = xcb_intern_atom(dpy->conn, FALSE, strlen(q->name), q->name);
 101 }
 102
 103 static void
 104 reply_atom(d_display_t *dpy, d_atom_query_t *q)
 105 {
 106     xcb_intern_atom_reply_t *rep;
 107     rep = xcb_intern_atom_reply(dpy->conn, q->ck, NULL);
 108     if (rep) {
 109         *q->atom = rep->atom;
 110         free(rep);
 111     }
 112     else {
 113         printf("unable to query atom %s\n", q->name);
 114         *q->atom = 0;
 115     }
 116 }
 117
 118 static void
 119 query_statics(d_display_t *dpy)
 120 {
 121     d_atom_query_t atoms[] = {
 122         { .atom = &dpy->a.utf8_string,
 123           .name = "UTF8_STRING" },
 124         { .atom = &dpy->a.esetroot_pmap_id,
 125           .name = "ESETROOT_PMAP_ID" },
 126         { .atom = &dpy->a.xrootpmap_id,
 127           .name = "_XROOTPMAP_ID" },
 128         { .atom = &dpy->a.xsetroot_id,
 129           .name = "_XSETROOT_ID" },
 130         { .atom = &dpy->a.net_wm_window_type,
 131           .name = "_NET_WM_WINDOW_TYPE" },
 132         { .atom = &dpy->a.net_wm_window_type_desktop,
 133           .name = "_NET_WM_WINDOW_TYPE_DESKTOP" },
 134         { .atom = &dpy->a.net_wm_window_type_dock,
 135           .name = "_NET_WM_WINDOW_TYPE_DOCK" },
 136         { .atom = &dpy->a.net_wm_window_type_normal,
 137           .name = "_NET_WM_WINDOW_TYPE_NORMAL" },
 138         { .atom = &dpy->a.net_wm_window_type_dialog,
 139           .name = "_NET_WM_WINDOW_TYPE_DIALOG" },
 140         { .atom = &dpy->a.net_wm_window_type_toolbar,
 141           .name = "_NET_WM_WINDOW_TYPE_TOOLBAR" },
 142         { .atom = &dpy->a.net_wm_window_type_menu,
 143           .name = "_NET_WM_WINDOW_TYPE_MENU" },
 144         { .atom = &dpy->a.net_wm_window_type_utility,
 145           .name = "_NET_WM_WINDOW_TYPE_UTILITY" },
 146         { .atom = &dpy->a.net_wm_window_type_splash,
 147           .name = "_NET_WM_WINDOW_TYPE_SPLAH" },
 148         { .atom = &dpy->a.net_wm_window_type_tooltip,
 149           .name = "_NET_WM_WINDOW_TYPE_TOOLTIP" },
 150         { .atom = &dpy->a.net_wm_window_type_combo,
 151           .name = "_NET_WM_WINDOW_TYPE_COMBO" },
 152         { .atom = &dpy->a.net_wm_window_type_dropdown_menu,
 153           .name = "_NET_WM_WINDOW_TYPE_DROPDOWN_MENU" },
 154         { .atom = &dpy->a.net_wm_window_type_popup_menu,
 155           .name = "_NET_WM_WINDOW_TYPE_POPUP_MENU" },
 156         { .atom = &dpy->a.net_wm_window_type_notification,
 157           .name = "_NET_WM_WINDOW_TYPE_NOTIFICATION" },
 158         { .atom = NULL }
 159     };
 160     int i;
 161     setup_extension(xfixes);
 162     setup_extension(render);
 163     setup_extension(composite);
 164     setup_extension(damage);
 165     setup_extension(shape);
 166
 167     query_extension(dpy, xfixes);
 168     query_extension(dpy, render);
 169     query_extension(dpy, composite);
 170     query_extension(dpy, damage);
 171     query_extension(dpy, shape);
 172
 173     query_extension_version(dpy, xfixes);
 174     query_extension_version(dpy, render);
 175     query_extension_version(dpy, composite);
 176     query_extension_version(dpy, damage);
 177     query_extension_version_no_client_version(dpy, shape);
 178
 179     for (i = 0; atoms[i].atom != NULL; ++i)
 180         query_atom(dpy, &atoms[i]);
 181
 182     xcb_flush(dpy->conn);
 183
 184     reply_extension(dpy, xfixes);
 185     reply_extension(dpy, render);
 186     reply_extension(dpy, composite);
 187     reply_extension(dpy, damage);
 188     reply_extension(dpy, shape);
 189
 190     for (i = 0; atoms[i].atom != NULL; ++i)
 191         reply_atom(dpy, &atoms[i]);
 192
 193     /* hard-coded ones, you can't request  these */
 194     dpy->a.atom = 4;
 195     dpy->a.cardinal = 6;
 196     dpy->a.pixmap = 20;
 197     dpy->a.string = 31;
 198 }
 199
 200 d_display_t*
 201 display_open(const char *name)
 202 {
 203     d_display_t *dpy = NULL;
 204     xcb_connection_t *conn;
 205
 206     conn = xcb_connect(name, NULL);
 207     if (conn && !xcb_connection_has_error(conn)) {
 208         dpy = malloc(sizeof(d_display_t));
 209         dpy->conn = conn;
 210         dpy->ref = 1;
 211         dpy->fd = xcb_get_file_descriptor(conn);
 212         dpy->screens = list_new();
 213
 214         query_statics(dpy);
 215     }
 216     return dpy;
 217 }
 218
 219 void
 220 display_ref(d_display_t *dpy)
 221 {
 222     ++dpy->ref;
 223 }
 224
 225 void
 226 display_unref(d_display_t *dpy)
 227 {
 228     if (dpy && --dpy->ref == 0) {
 229         d_list_it_t *it;
 230
 231         for (it = list_top(dpy->screens); it; it = it->next)
 232             screen_unref(it->data);
 233         list_unref(dpy->screens);
 234
 235         xcb_disconnect(dpy->conn);
 236         free(dpy);
 237     }
 238 }
 239
 240 void
 241 display_error(d_display_t *dpy, xcb_generic_error_t *ev)
 242 {
 243     const int major_opcode = ((xcb_request_error_t*)ev)->major_opcode;
 244     const int minor_opcode = ((xcb_request_error_t*)ev)->minor_opcode;
 245     const char *name, *req;
 246
 247     /* XXX check if we should ignore it (ev->full_sequence) */
 248
 249     (void)dpy;
 250
 251     name = NULL;
 252     switch (ev->error_code) {
 253     case XCB_REQUEST:   name = "BadRequest";   break;
 254     case XCB_VALUE:     name = "BadValue";     break;
 255     case XCB_WINDOW:    name = "BadWindow";    break;
 256     case XCB_PIXMAP:    name = "BadPixmap";    break;
 257     case XCB_MATCH:     name = "BadMatch";     break;
 258     case XCB_DRAWABLE:  name = "BadDrawable";  break;
 259     case XCB_G_CONTEXT: name = "BadGC";        break;
 260     default: break;
 261     }
 262     if (!name)
 263         switch (ev->error_code - dpy->xfixes.error) {
 264         case XCB_XFIXES_BAD_REGION: name = "BadRegion"; break;
 265         default: break;
 266         }
 267     if (!name)
 268         switch (ev->error_code - dpy->damage.error) {
 269         case XCB_DAMAGE_BAD_DAMAGE: name = "BadDamage"; break;
 270         default: break;
 271         }
 272     if (!name)
 273         switch (ev->error_code - dpy->render.error) {
 274         case XCB_RENDER_PICT_FORMAT: name = "BadPictFormat"; break;
 275         case XCB_RENDER_PICT_OP:     name = "BadPictOp"; break;
 276         case XCB_RENDER_PICTURE:     name = "BadPicture"; break;
 277         case XCB_RENDER_GLYPH_SET:   name = "BadGlyphSet"; break;
 278         case XCB_RENDER_GLYPH:       name = "BadGlyph"; break;
 279         default: break;
 280         }
 281
 282     req = NULL;
 283     if (major_opcode <= 127)
 284         switch (major_opcode) {
 285         case 1:  req = "CreateWindow";           break;
 286         case 2:  req = "ChangeWindowAttributes"; break;
 287         case 3:  req = "GetWindowAttributes";    break;
 288         case 14: req = "GetGeometry";            break;
 289         case 15: req = "QueryTree";              break;
 290         case 18: req = "ChangeProperty";         break;
 291         case 20: req = "GetProperty";            break;
 292         case 22: req = "SetSelectionOwner";      break;
 293         case 23: req = "GetSelectionOwner";      break;
 294         case 53: req = "CreatePixmap";           break;
 295         case 54: req = "FreePixmap";             break;
 296         case 55: req = "CreateGC";               break;
 297         case 56: req = "ChangeGC";               break;
 298         case 60: req = "FreeGC";                 break;
 299         case 72: req = "PutImage";               break;
 300         default: break;
 301         }
 302     else if (major_opcode == dpy->damage.opcode)
 303         switch (minor_opcode)
 304         {
 305         case 0: req = "DamageQueryVersion"; break;
 306         case 1: req = "DamageCreate";       break;
 307         case 2: req = "DamageDestroy";      break;
 308         case 3: req = "DamageSubtract";     break;
 309         default: break;
 310         }
 311     else if (major_opcode == dpy->render.opcode)
 312         switch (minor_opcode)
 313         {
 314         case 0:  req = "RenderQueryVersion";             break;
 315         case 1:  req = "RenderQueryPictFormats";         break;
 316         case 2:  req = "RenderQueryPictIndexValues";     break;
 317         case 4:  req = "RenderCreatePicture";            break;
 318         case 5:  req = "RenderChangePicture";            break;
 319         case 6:  req = "RenderSetPictureClipRectangles"; break;
 320         case 7:  req = "RenderFreePicture";              break;
 321         case 8:  req = "RenderComposite";                break;
 322         case 10: req = "RenderCompositeTrapezoids";      break;
 323         case 11: req = "RenderCompositeTriangles";       break;
 324         case 12: req = "RenderCompositeTriStrip";        break;
 325         case 13: req = "RenderCompositeTriFan";          break;
 326         case 17: req = "RenderCreateGlyphSet";           break;
 327         case 18: req = "RenderReferenceGlyphSet";        break;
 328         case 19: req = "RenderFreeGlyphSet";             break;
 329         case 20: req = "RenderAddGlyphs";                break;
 330         case 22: req = "RenderFreeGlyphs";               break;
 331         case 23: req = "RenderCompositeGlyphs8";         break;
 332         case 24: req = "RenderCompositeGlyphs16";        break;
 333         case 25: req = "RenderCompositeGlyphs32";        break;
 334         case 26: req = "RenderFillRectangles";           break;
 335         case 27: req = "RenderCreateCursor";             break;
 336         case 28: req = "RenderSetPictureTransform";      break;
 337         case 29: req = "RenderQueryFilters";             break;
 338         case 30: req = "RenderSetPictureFilter";         break;
 339         case 31: req = "RenderCreateAnimCursor";         break;
 340         case 32: req = "RenderAddTraps";                 break;
 341         case 33: req = "RenderCreateSolidFill";          break;
 342         case 34: req = "RenderLinearGradient";           break;
 343         case 35: req = "RenderRadialGradient";           break;
 344         case 36: req = "RenderConicalGradient";          break;
 345         default: break;
 346         }
 347     else if (major_opcode == dpy->composite.opcode)
 348         switch (minor_opcode)
 349         {
 350         case 0: req = "CompositeQueryVersion";               break;
 351         case 1: req = "CompositeRedirectWindow";             break;
 352         case 2: req = "CompositeRedirectSubwindows";         break;
 353         case 3: req = "CompositeUnredirectWindow";           break;
 354         case 4: req = "CompositeUnredirectSubwindows";       break;
 355         case 5: req = "CompositeCreateRegionFromBorderClip"; break;
 356         case 6: req = "CompositeNameWindowPixmap";           break;
 357         case 7: req = "CompositeGetOverlayWindow";           break;
 358         case 8: req = "CompositeReleaseOverlayWindow";       break;
 359         default: break;
 360         }
 361     else if (major_opcode == dpy->shape.opcode)
 362         switch (minor_opcode)
 363         {
 364         case 0: req = "ShapeQueryVersion";  break;
 365         case 1: req = "ShapeRectangles";    break;
 366         case 2: req = "ShapeMask";          break;
 367         case 3: req = "ShapeCombine";       break;
 368         case 4: req = "ShapeOffset";        break;
 369         case 5: req = "ShapeQueryExtents";  break;
 370         case 6: req = "ShapeSelectInput";   break;
 371         case 7: req = "ShapeInputSelected"; break;
 372         case 8: req = "ShapeGetRectangles"; break;
 373         default: break;
 374         }
 375
 376     if (name && req)
 377         printf("XError: %s %s\n",
 378                name, req);
 379     else if (name)
 380         printf("XError: %s major opcode %d minor opcode %d\n",
 381                name, major_opcode, minor_opcode);
 382     else
 383         printf("XError: code %d major opcode %d minor opcode %d\n",
 384                ev->error_code, major_opcode, minor_opcode);
 385
 386     //abort();
 387 }
 388
 389 int
 390 display_claim_screens(d_display_t *dpy)
 391 {
 392     static const xcb_setup_t *setup;
 393     xcb_screen_iterator_t it;
 394     int i;
 395     d_screen_t *sc;
 396
 397     setup = xcb_get_setup(dpy->conn);
 398
 399     i = 0;
 400     for (it = xcb_setup_roots_iterator(setup); it.rem; xcb_screen_next(&it)) {
 401         sc = screen_new(dpy, i++, it.data);
 402         if (screen_register(sc)) {
 403             list_append(dpy->screens, sc);
 404             printf(_("managing screen %d\n"), sc->num);
 405         }
 406         else
 407             screen_unref(sc);
 408     }
 409     return list_length(dpy->screens);
 410 }
 411
 412 d_screen_t*
 413 display_screen_from_root(d_display_t *dpy, xcb_window_t root)
 414 {
 415     d_list_it_t *it;
 416
 417     for (it = list_top(dpy->screens); it; it = it->next) {
 418         d_screen_t *sc = it->data;
 419         if (sc->super.root == root)
 420             return sc;
 421     }
 422     assert(0);
 423     return NULL;
 424 }