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_opacity,
 131           .name = "_NET_WM_WINDOW_OPACITY" },
 132         { .atom = &dpy->a.net_wm_window_type,
 133           .name = "_NET_WM_WINDOW_TYPE" },
 134         { .atom = &dpy->a.net_wm_window_type_desktop,
 135           .name = "_NET_WM_WINDOW_TYPE_DESKTOP" },
 136         { .atom = &dpy->a.net_wm_window_type_dock,
 137           .name = "_NET_WM_WINDOW_TYPE_DOCK" },
 138         { .atom = &dpy->a.net_wm_window_type_normal,
 139           .name = "_NET_WM_WINDOW_TYPE_NORMAL" },
 140         { .atom = &dpy->a.net_wm_window_type_dialog,
 141           .name = "_NET_WM_WINDOW_TYPE_DIALOG" },
 142         { .atom = &dpy->a.net_wm_window_type_toolbar,
 143           .name = "_NET_WM_WINDOW_TYPE_TOOLBAR" },
 144         { .atom = &dpy->a.net_wm_window_type_menu,
 145           .name = "_NET_WM_WINDOW_TYPE_MENU" },
 146         { .atom = &dpy->a.net_wm_window_type_utility,
 147           .name = "_NET_WM_WINDOW_TYPE_UTILITY" },
 148         { .atom = &dpy->a.net_wm_window_type_splash,
 149           .name = "_NET_WM_WINDOW_TYPE_SPLAH" },
 150         { .atom = &dpy->a.net_wm_window_type_tooltip,
 151           .name = "_NET_WM_WINDOW_TYPE_TOOLTIP" },
 152         { .atom = &dpy->a.net_wm_window_type_combo,
 153           .name = "_NET_WM_WINDOW_TYPE_COMBO" },
 154         { .atom = &dpy->a.net_wm_window_type_dropdown_menu,
 155           .name = "_NET_WM_WINDOW_TYPE_DROPDOWN_MENU" },
 156         { .atom = &dpy->a.net_wm_window_type_popup_menu,
 157           .name = "_NET_WM_WINDOW_TYPE_POPUP_MENU" },
 158         { .atom = &dpy->a.net_wm_window_type_notification,
 159           .name = "_NET_WM_WINDOW_TYPE_NOTIFICATION" },
 160         { .atom = NULL }
 161     };
 162     int i;
 163     setup_extension(xfixes);
 164     setup_extension(render);
 165     setup_extension(composite);
 166     setup_extension(damage);
 167     setup_extension(shape);
 168
 169     query_extension(dpy, xfixes);
 170     query_extension(dpy, render);
 171     query_extension(dpy, composite);
 172     query_extension(dpy, damage);
 173     query_extension(dpy, shape);
 174
 175     query_extension_version(dpy, xfixes);
 176     query_extension_version(dpy, render);
 177     query_extension_version(dpy, composite);
 178     query_extension_version(dpy, damage);
 179     query_extension_version_no_client_version(dpy, shape);
 180
 181     for (i = 0; atoms[i].atom != NULL; ++i)
 182         query_atom(dpy, &atoms[i]);
 183
 184     xcb_flush(dpy->conn);
 185
 186     reply_extension(dpy, xfixes);
 187     reply_extension(dpy, render);
 188     reply_extension(dpy, composite);
 189     reply_extension(dpy, damage);
 190     reply_extension(dpy, shape);
 191
 192     for (i = 0; atoms[i].atom != NULL; ++i)
 193         reply_atom(dpy, &atoms[i]);
 194
 195     /* hard-coded ones, you can't request  these */
 196     dpy->a.atom = 4;
 197     dpy->a.cardinal = 6;
 198     dpy->a.pixmap = 20;
 199     dpy->a.string = 31;
 200     dpy->a.window = 33;
 201     dpy->a.wm_transient_for = 68;
 202 }
 203
 204 d_display_t*
 205 display_open(const char *name)
 206 {
 207     d_display_t *dpy = NULL;
 208     xcb_connection_t *conn;
 209
 210     conn = xcb_connect(name, NULL);
 211     if (conn && !xcb_connection_has_error(conn)) {
 212         dpy = malloc(sizeof(d_display_t));
 213         dpy->conn = conn;
 214         dpy->ref = 1;
 215         dpy->fd = xcb_get_file_descriptor(conn);
 216         dpy->screens = list_new();
 217
 218         query_statics(dpy);
 219     }
 220     return dpy;
 221 }
 222
 223 void
 224 display_ref(d_display_t *dpy)
 225 {
 226     ++dpy->ref;
 227 }
 228
 229 void
 230 display_unref(d_display_t *dpy)
 231 {
 232     if (dpy && --dpy->ref == 0) {
 233         d_list_it_t *it;
 234
 235         for (it = list_top(dpy->screens); it; it = it->next)
 236             screen_unref(it->data);
 237         list_unref(dpy->screens);
 238
 239         xcb_disconnect(dpy->conn);
 240         free(dpy);
 241     }
 242 }
 243
 244 void
 245 display_error(d_display_t *dpy, xcb_generic_error_t *ev)
 246 {
 247     const int major_opcode = ((xcb_request_error_t*)ev)->major_opcode;
 248     const int minor_opcode = ((xcb_request_error_t*)ev)->minor_opcode;
 249     const char *name, *req;
 250
 251     /* XXX check if we should ignore it (ev->full_sequence) */
 252
 253     (void)dpy;
 254
 255     name = NULL;
 256     switch (ev->error_code) {
 257     case XCB_REQUEST:   name = "BadRequest";   break;
 258     case XCB_VALUE:     name = "BadValue";     break;
 259     case XCB_WINDOW:    name = "BadWindow";    break;
 260     case XCB_PIXMAP:    name = "BadPixmap";    break;
 261     case XCB_MATCH:     name = "BadMatch";     break;
 262     case XCB_DRAWABLE:  name = "BadDrawable";  break;
 263     case XCB_G_CONTEXT: name = "BadGC";        break;
 264     case XCB_ID_CHOICE: name = "BadID";        break;
 265     default: break;
 266     }
 267     if (!name)
 268         switch (ev->error_code - dpy->xfixes.error) {
 269         case XCB_XFIXES_BAD_REGION: name = "BadRegion"; break;
 270         default: break;
 271         }
 272     if (!name)
 273         switch (ev->error_code - dpy->damage.error) {
 274         case XCB_DAMAGE_BAD_DAMAGE: name = "BadDamage"; break;
 275         default: break;
 276         }
 277     if (!name)
 278         switch (ev->error_code - dpy->render.error) {
 279         case XCB_RENDER_PICT_FORMAT: name = "BadPictFormat"; break;
 280         case XCB_RENDER_PICT_OP:     name = "BadPictOp"; break;
 281         case XCB_RENDER_PICTURE:     name = "BadPicture"; break;
 282         case XCB_RENDER_GLYPH_SET:   name = "BadGlyphSet"; break;
 283         case XCB_RENDER_GLYPH:       name = "BadGlyph"; break;
 284         default: break;
 285         }
 286
 287     req = NULL;
 288     if (major_opcode <= 127)
 289         switch (major_opcode) {
 290         case 1:  req = "CreateWindow";           break;
 291         case 2:  req = "ChangeWindowAttributes"; break;
 292         case 3:  req = "GetWindowAttributes";    break;
 293         case 14: req = "GetGeometry";            break;
 294         case 15: req = "QueryTree";              break;
 295         case 18: req = "ChangeProperty";         break;
 296         case 20: req = "GetProperty";            break;
 297         case 22: req = "SetSelectionOwner";      break;
 298         case 23: req = "GetSelectionOwner";      break;
 299         case 53: req = "CreatePixmap";           break;
 300         case 54: req = "FreePixmap";             break;
 301         case 55: req = "CreateGC";               break;
 302         case 56: req = "ChangeGC";               break;
 303         case 60: req = "FreeGC";                 break;
 304         case 72: req = "PutImage";               break;
 305         default: break;
 306         }
 307     else if (major_opcode == dpy->damage.opcode)
 308         switch (minor_opcode)
 309         {
 310         case 0: req = "DamageQueryVersion"; break;
 311         case 1: req = "DamageCreate";       break;
 312         case 2: req = "DamageDestroy";      break;
 313         case 3: req = "DamageSubtract";     break;
 314         default: break;
 315         }
 316     else if (major_opcode == dpy->render.opcode)
 317         switch (minor_opcode)
 318         {
 319         case 0:  req = "RenderQueryVersion";             break;
 320         case 1:  req = "RenderQueryPictFormats";         break;
 321         case 2:  req = "RenderQueryPictIndexValues";     break;
 322         case 4:  req = "RenderCreatePicture";            break;
 323         case 5:  req = "RenderChangePicture";            break;
 324         case 6:  req = "RenderSetPictureClipRectangles"; break;
 325         case 7:  req = "RenderFreePicture";              break;
 326         case 8:  req = "RenderComposite";                break;
 327         case 10: req = "RenderCompositeTrapezoids";      break;
 328         case 11: req = "RenderCompositeTriangles";       break;
 329         case 12: req = "RenderCompositeTriStrip";        break;
 330         case 13: req = "RenderCompositeTriFan";          break;
 331         case 17: req = "RenderCreateGlyphSet";           break;
 332         case 18: req = "RenderReferenceGlyphSet";        break;
 333         case 19: req = "RenderFreeGlyphSet";             break;
 334         case 20: req = "RenderAddGlyphs";                break;
 335         case 22: req = "RenderFreeGlyphs";               break;
 336         case 23: req = "RenderCompositeGlyphs8";         break;
 337         case 24: req = "RenderCompositeGlyphs16";        break;
 338         case 25: req = "RenderCompositeGlyphs32";        break;
 339         case 26: req = "RenderFillRectangles";           break;
 340         case 27: req = "RenderCreateCursor";             break;
 341         case 28: req = "RenderSetPictureTransform";      break;
 342         case 29: req = "RenderQueryFilters";             break;
 343         case 30: req = "RenderSetPictureFilter";         break;
 344         case 31: req = "RenderCreateAnimCursor";         break;
 345         case 32: req = "RenderAddTraps";                 break;
 346         case 33: req = "RenderCreateSolidFill";          break;
 347         case 34: req = "RenderLinearGradient";           break;
 348         case 35: req = "RenderRadialGradient";           break;
 349         case 36: req = "RenderConicalGradient";          break;
 350         default: break;
 351         }
 352     else if (major_opcode == dpy->composite.opcode)
 353         switch (minor_opcode)
 354         {
 355         case 0: req = "CompositeQueryVersion";               break;
 356         case 1: req = "CompositeRedirectWindow";             break;
 357         case 2: req = "CompositeRedirectSubwindows";         break;
 358         case 3: req = "CompositeUnredirectWindow";           break;
 359         case 4: req = "CompositeUnredirectSubwindows";       break;
 360         case 5: req = "CompositeCreateRegionFromBorderClip"; break;
 361         case 6: req = "CompositeNameWindowPixmap";           break;
 362         case 7: req = "CompositeGetOverlayWindow";           break;
 363         case 8: req = "CompositeReleaseOverlayWindow";       break;
 364         default: break;
 365         }
 366     else if (major_opcode == dpy->shape.opcode)
 367         switch (minor_opcode)
 368         {
 369         case 0: req = "ShapeQueryVersion";  break;
 370         case 1: req = "ShapeRectangles";    break;
 371         case 2: req = "ShapeMask";          break;
 372         case 3: req = "ShapeCombine";       break;
 373         case 4: req = "ShapeOffset";        break;
 374         case 5: req = "ShapeQueryExtents";  break;
 375         case 6: req = "ShapeSelectInput";   break;
 376         case 7: req = "ShapeInputSelected"; break;
 377         case 8: req = "ShapeGetRectangles"; break;
 378         default: break;
 379         }
 380     else if (major_opcode == dpy->xfixes.opcode)
 381         switch (minor_opcode)
 382         {
 383         case 0: req = "XFixesQueryVersion";            break;
 384         case 1: req = "XFixesChangeSaveSet";           break;
 385         case 2: req = "XFixesSelectSelectionInput";    break;
 386         case 3: req = "XFixesSelectCursorInput";       break;
 387         case 4: req = "XFixesGetCursorImage";          break;
 388         case 5: req = "XFixesCreateRegion";            break;
 389         case 6: req = "XFixesCreateRegionFromBitmap";  break;
 390         case 7: req = "XFixesCreateRegionFromWindow";  break;
 391         case 8: req = "XFixesCreateRegionFromGC";      break;
 392         case 9: req = "XFixesCreateRegionFromPicture"; break;
 393         case 10: req = "XFixesDestroyRegion";          break;
 394         case 11: req = "XFixesSetRegion";              break;
 395         case 12: req = "XFixesCopyRegion";             break;
 396         case 13: req = "XFixesUnionRegion";            break;
 397         case 14: req = "XFixesIntersectRegion";        break;
 398         case 15: req = "XFixesSubtractRegion";         break;
 399         case 16: req = "XFixesInvertRegion";           break;
 400         case 17: req = "XFixesTranslanteRegion";       break;
 401         case 18: req = "XFixesRegionExtents";          break;
 402         case 19: req = "XFixesFetchRegion";            break;
 403         case 20: req = "XFixesGCClipRegion";           break;
 404         case 21: req = "XFixesSetWindowShapeRegion";   break;
 405         case 22: req = "XFixesSetPictureClipRegion";   break;
 406         default: break;
 407         }
 408
 409     if (name && req)
 410         printf("XError: %s %s\n",
 411                name, req);
 412     else if (name)
 413         printf("XError: %s major opcode %d minor opcode %d\n",
 414                name, major_opcode, minor_opcode);
 415     else
 416         printf("XError: error code %d major opcode %d minor opcode %d\n",
 417                ev->error_code, major_opcode, minor_opcode);
 418
 419     //abort();
 420 }
 421
 422 int
 423 display_claim_screens(d_display_t *dpy)
 424 {
 425     static const xcb_setup_t *setup;
 426     xcb_screen_iterator_t it;
 427     int i;
 428     d_screen_t *sc;
 429
 430     setup = xcb_get_setup(dpy->conn);
 431
 432     i = 0;
 433     for (it = xcb_setup_roots_iterator(setup); it.rem; xcb_screen_next(&it)) {
 434         sc = screen_new(dpy, i++, it.data);
 435         if (screen_register(sc)) {
 436             list_append(dpy->screens, sc);
 437             printf(_("managing screen %d\n"), sc->num);
 438         }
 439         else
 440             screen_unref(sc);
 441     }
 442     return list_length(dpy->screens);
 443 }
 444
 445 d_screen_t*
 446 display_screen_from_root(d_display_t *dpy, xcb_window_t root)
 447 {
 448     d_list_it_t *it;
 449
 450     for (it = list_top(dpy->screens); it; it = it->next) {
 451         d_screen_t *sc = it->data;
 452         if (sc->super.root == root)
 453             return sc;
 454     }
 455     return NULL;
 456 }