screen: XRandR 1.5 support
XRandR 1.5 adds support for the new monitor objects. 'Monitor' is a rectangular subset of the screen which represents a coherent collection of pixels presented to the user. Each Monitor is be associated with a list of outputs (which may be empty). The patch below matches 1:1 screens in AwesomeWM with XRandR's Monitors. This way I get one screen across my 4K monitor, which is represented by two CRTCs. Background info: http://keithp.com/blogs/MST-monitors/ Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
This commit is contained in:
Kirill A. Shutemov
parent
ae96ed0827
commit
c543f59696
223
objects/screen.c
223
objects/screen.c
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@ -152,6 +152,8 @@
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* @function set_newindex_miss_handler
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*/
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DO_ARRAY(xcb_randr_output_t, randr_output, DO_NOTHING);
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struct screen_output_t
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{
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/** The XRandR names of the output */
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@ -159,7 +161,7 @@ struct screen_output_t
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/** The size in millimeters */
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uint32_t mm_width, mm_height;
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/** The XID */
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xcb_randr_output_t output;
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randr_output_array_t outputs;
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};
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static void
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@ -241,6 +243,147 @@ screens_exist(void)
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return globalconf.screens.len > 0;
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}
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/* Monitors were introduced in RandR 1.5 */
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#ifdef XCB_RANDR_GET_MONITORS
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static bool
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screen_scan_randr_monitors(void)
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{
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xcb_randr_get_monitors_cookie_t monitors_c = xcb_randr_get_monitors(globalconf.connection, globalconf.screen->root, 1);
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xcb_randr_get_monitors_reply_t *monitors_r = xcb_randr_get_monitors_reply(globalconf.connection, monitors_c, NULL);
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xcb_randr_monitor_info_iterator_t monitor_iter;
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bool found = false;
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for(monitor_iter = xcb_randr_get_monitors_monitors_iterator(monitors_r);
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monitor_iter.rem; xcb_randr_monitor_info_next(&monitor_iter))
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{
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lua_State *L = globalconf_get_lua_State();
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screen_t *new_screen;
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screen_output_t output;
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xcb_randr_output_t *randr_outputs;
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xcb_get_atom_name_cookie_t name_c;
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xcb_get_atom_name_reply_t *name_r;
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if(!xcb_randr_monitor_info_outputs_length(monitor_iter.data))
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continue;
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new_screen = screen_new(L);
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new_screen->geometry.x = monitor_iter.data->x;
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new_screen->geometry.y = monitor_iter.data->y;
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new_screen->geometry.width= monitor_iter.data->width;
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new_screen->geometry.height= monitor_iter.data->height;
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output.mm_width = monitor_iter.data->width_in_millimeters;
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output.mm_height = monitor_iter.data->height_in_millimeters;
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name_c = xcb_get_atom_name_unchecked(globalconf.connection, monitor_iter.data->name);
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name_r = xcb_get_atom_name_reply(globalconf.connection, name_c, NULL);
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if (name_r) {
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const char *name = xcb_get_atom_name_name(name_r);
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size_t len = xcb_get_atom_name_name_length(name_r);
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output.name = memcpy(p_new(char *, len + 1), name, len);
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output.name[len] = '\0';
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p_delete(&name_r);
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} else {
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output.name = strdup("unknown");
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}
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randr_output_array_init(&output.outputs);
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randr_outputs = xcb_randr_monitor_info_outputs(monitor_iter.data);
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for(int i = 0; i < xcb_randr_monitor_info_outputs_length(monitor_iter.data); i++) {
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randr_output_array_append(&output.outputs, randr_outputs[i]);
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}
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screen_output_array_append(&new_screen->outputs, output);
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found = true;
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screen_add(L, -1);
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}
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p_delete(&monitors_r);
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return found;
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}
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#else
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screen_scan_randr_monitors(void)
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{
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return false;
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}
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#endif
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static bool
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screen_scan_randr_crtcs(void)
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{
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/* A quick XRandR recall:
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* You have CRTC that manages a part of a SCREEN.
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* Each CRTC can draw stuff on one or more OUTPUT. */
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xcb_randr_get_screen_resources_cookie_t screen_res_c = xcb_randr_get_screen_resources(globalconf.connection, globalconf.screen->root);
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xcb_randr_get_screen_resources_reply_t *screen_res_r = xcb_randr_get_screen_resources_reply(globalconf.connection, screen_res_c, NULL);
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/* Only use the data from XRandR if there is more than one screen
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* defined. This should work around the broken nvidia driver. */
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if (screen_res_r->num_crtcs <= 1)
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{
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p_delete(&screen_res_r);
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return false;
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}
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/* We go through CRTC, and build a screen for each one. */
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xcb_randr_crtc_t *randr_crtcs = xcb_randr_get_screen_resources_crtcs(screen_res_r);
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for(int i = 0; i < screen_res_r->num_crtcs; i++)
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{
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lua_State *L = globalconf_get_lua_State();
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/* Get info on the output crtc */
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xcb_randr_get_crtc_info_cookie_t crtc_info_c = xcb_randr_get_crtc_info(globalconf.connection, randr_crtcs[i], XCB_CURRENT_TIME);
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xcb_randr_get_crtc_info_reply_t *crtc_info_r = xcb_randr_get_crtc_info_reply(globalconf.connection, crtc_info_c, NULL);
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/* If CRTC has no OUTPUT, ignore it */
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if(!xcb_randr_get_crtc_info_outputs_length(crtc_info_r))
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continue;
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/* Prepare the new screen */
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screen_t *new_screen = screen_new(L);
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new_screen->geometry.x = crtc_info_r->x;
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new_screen->geometry.y = crtc_info_r->y;
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new_screen->geometry.width= crtc_info_r->width;
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new_screen->geometry.height= crtc_info_r->height;
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xcb_randr_output_t *randr_outputs = xcb_randr_get_crtc_info_outputs(crtc_info_r);
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for(int j = 0; j < xcb_randr_get_crtc_info_outputs_length(crtc_info_r); j++)
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{
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xcb_randr_get_output_info_cookie_t output_info_c = xcb_randr_get_output_info(globalconf.connection, randr_outputs[j], XCB_CURRENT_TIME);
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xcb_randr_get_output_info_reply_t *output_info_r = xcb_randr_get_output_info_reply(globalconf.connection, output_info_c, NULL);
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screen_output_t output;
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int len = xcb_randr_get_output_info_name_length(output_info_r);
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/* name is not NULL terminated */
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char *name = memcpy(p_new(char *, len + 1), xcb_randr_get_output_info_name(output_info_r), len);
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name[len] = '\0';
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output.name = name;
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output.mm_width = output_info_r->mm_width;
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output.mm_height = output_info_r->mm_height;
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randr_output_array_init(&output.outputs);
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randr_output_array_append(&output.outputs, randr_outputs[j]);
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screen_output_array_append(&new_screen->outputs, output);
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p_delete(&output_info_r);
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}
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screen_add(L, -1);
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p_delete(&crtc_info_r);
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}
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p_delete(&screen_res_r);
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return true;
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}
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static bool
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screen_scan_randr(void)
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{
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@ -249,11 +392,12 @@ screen_scan_randr(void)
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{
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xcb_randr_query_version_reply_t *version_reply =
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xcb_randr_query_version_reply(globalconf.connection,
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xcb_randr_query_version(globalconf.connection, 1, 3), 0);
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xcb_randr_query_version(globalconf.connection, 1, 5), 0);
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if(version_reply)
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{
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uint32_t major_version = version_reply->major_version;
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uint32_t minor_version = version_reply->minor_version;
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bool found;
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p_delete(&version_reply);
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@ -263,71 +407,15 @@ screen_scan_randr(void)
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globalconf.have_randr_13 = minor_version >= 3;
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/* A quick XRandR recall:
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* You have CRTC that manages a part of a SCREEN.
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* Each CRTC can draw stuff on one or more OUTPUT. */
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xcb_randr_get_screen_resources_cookie_t screen_res_c = xcb_randr_get_screen_resources(globalconf.connection, globalconf.screen->root);
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xcb_randr_get_screen_resources_reply_t *screen_res_r = xcb_randr_get_screen_resources_reply(globalconf.connection, screen_res_c, NULL);
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if (minor_version >= 5)
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found = screen_scan_randr_monitors();
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else
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found = screen_scan_randr_crtcs();
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/* Only use the data from XRandR if there is more than one screen
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* defined. This should work around the broken nvidia driver. */
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if (screen_res_r->num_crtcs <= 1)
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{
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p_delete(&screen_res_r);
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if (found)
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screen_update_primary();
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else
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return false;
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}
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/* We go through CRTC, and build a screen for each one. */
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xcb_randr_crtc_t *randr_crtcs = xcb_randr_get_screen_resources_crtcs(screen_res_r);
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for(int i = 0; i < screen_res_r->num_crtcs; i++)
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{
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lua_State *L = globalconf_get_lua_State();
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/* Get info on the output crtc */
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xcb_randr_get_crtc_info_cookie_t crtc_info_c = xcb_randr_get_crtc_info(globalconf.connection, randr_crtcs[i], XCB_CURRENT_TIME);
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xcb_randr_get_crtc_info_reply_t *crtc_info_r = xcb_randr_get_crtc_info_reply(globalconf.connection, crtc_info_c, NULL);
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/* If CRTC has no OUTPUT, ignore it */
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if(!xcb_randr_get_crtc_info_outputs_length(crtc_info_r))
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continue;
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/* Prepare the new screen */
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screen_t *new_screen = screen_new(L);
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new_screen->geometry.x = crtc_info_r->x;
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new_screen->geometry.y = crtc_info_r->y;
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new_screen->geometry.width= crtc_info_r->width;
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new_screen->geometry.height= crtc_info_r->height;
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xcb_randr_output_t *randr_outputs = xcb_randr_get_crtc_info_outputs(crtc_info_r);
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for(int j = 0; j < xcb_randr_get_crtc_info_outputs_length(crtc_info_r); j++)
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{
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xcb_randr_get_output_info_cookie_t output_info_c = xcb_randr_get_output_info(globalconf.connection, randr_outputs[j], XCB_CURRENT_TIME);
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xcb_randr_get_output_info_reply_t *output_info_r = xcb_randr_get_output_info_reply(globalconf.connection, output_info_c, NULL);
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int len = xcb_randr_get_output_info_name_length(output_info_r);
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/* name is not NULL terminated */
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char *name = memcpy(p_new(char *, len + 1), xcb_randr_get_output_info_name(output_info_r), len);
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name[len] = '\0';
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screen_output_array_append(&new_screen->outputs,
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(screen_output_t) { .name = name,
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.mm_width = output_info_r->mm_width,
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.mm_height = output_info_r->mm_height,
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.output = randr_outputs[j] });
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p_delete(&output_info_r);
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}
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screen_add(L, -1);
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p_delete(&crtc_info_r);
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}
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p_delete(&screen_res_r);
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screen_update_primary();
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return screens_exist();
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}
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}
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@ -664,8 +752,9 @@ screen_update_primary(void)
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foreach(screen, globalconf.screens)
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{
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foreach(output, (*screen)->outputs)
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if (output->output == primary->output)
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primary_screen = *screen;
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foreach (randr_output, output->outputs)
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if (*randr_output == primary->output)
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primary_screen = *screen;
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}
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p_delete(&primary);
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