Michael Stapelberg
7 years ago
committed by
GitHub
GitHub
7 changed files with 317 additions and 101 deletions
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/*
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* vim:ts=4:sw=4:expandtab |
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* |
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* © 2010 Michael Stapelberg |
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* |
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* See LICENSE for licensing information |
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* |
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*/ |
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#include <stdbool.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <math.h> |
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#include <xcb/xcb.h> |
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#include <xcb/xinerama.h> |
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#include <xcb/randr.h> |
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#include "i3lock.h" |
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#include "xcb.h" |
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#include "randr.h" |
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/* Number of Xinerama screens which are currently present. */ |
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int xr_screens = 0; |
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/* The resolutions of the currently present Xinerama screens. */ |
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Rect *xr_resolutions = NULL; |
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static bool xinerama_active; |
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static bool has_randr = false; |
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static bool has_randr_1_5 = false; |
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extern bool debug_mode; |
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void _xinerama_init(void); |
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void randr_init(int *event_base, xcb_window_t root) { |
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const xcb_query_extension_reply_t *extreply; |
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extreply = xcb_get_extension_data(conn, &xcb_randr_id); |
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if (!extreply->present) { |
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DEBUG("RandR is not present, falling back to Xinerama.\n"); |
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_xinerama_init(); |
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return; |
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} |
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xcb_generic_error_t *err; |
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xcb_randr_query_version_reply_t *randr_version = |
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xcb_randr_query_version_reply( |
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conn, xcb_randr_query_version(conn, XCB_RANDR_MAJOR_VERSION, XCB_RANDR_MINOR_VERSION), &err); |
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if (err != NULL) { |
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DEBUG("Could not query RandR version: X11 error code %d\n", err->error_code); |
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_xinerama_init(); |
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return; |
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} |
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has_randr = true; |
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has_randr_1_5 = (randr_version->major_version >= 1) && |
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(randr_version->minor_version >= 5); |
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free(randr_version); |
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if (event_base != NULL) |
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*event_base = extreply->first_event; |
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xcb_randr_select_input(conn, root, |
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XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE | |
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XCB_RANDR_NOTIFY_MASK_OUTPUT_CHANGE | |
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XCB_RANDR_NOTIFY_MASK_CRTC_CHANGE | |
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XCB_RANDR_NOTIFY_MASK_OUTPUT_PROPERTY); |
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xcb_flush(conn); |
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} |
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void _xinerama_init(void) { |
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if (!xcb_get_extension_data(conn, &xcb_xinerama_id)->present) { |
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DEBUG("Xinerama extension not found, disabling.\n"); |
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return; |
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} |
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xcb_xinerama_is_active_cookie_t cookie; |
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xcb_xinerama_is_active_reply_t *reply; |
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cookie = xcb_xinerama_is_active(conn); |
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reply = xcb_xinerama_is_active_reply(conn, cookie, NULL); |
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if (!reply) |
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return; |
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if (!reply->state) { |
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free(reply); |
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return; |
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} |
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xinerama_active = true; |
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free(reply); |
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} |
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/*
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* randr_query_outputs_15 uses RandR ≥ 1.5 to update outputs. |
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* |
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*/ |
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static bool _randr_query_monitors_15(xcb_window_t root) { |
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#if XCB_RANDR_MINOR_VERSION < 5 |
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return false; |
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#else |
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/* RandR 1.5 available at compile-time, i.e. libxcb is new enough */ |
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if (!has_randr_1_5) { |
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return false; |
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} |
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/* RandR 1.5 available at run-time (supported by the server) */ |
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DEBUG("Querying monitors using RandR 1.5\n"); |
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xcb_generic_error_t *err; |
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xcb_randr_get_monitors_reply_t *monitors = |
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xcb_randr_get_monitors_reply( |
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conn, xcb_randr_get_monitors(conn, root, true), &err); |
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if (err != NULL) { |
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DEBUG("Could not get RandR monitors: X11 error code %d\n", err->error_code); |
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free(err); |
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/* Fall back to RandR ≤ 1.4 */ |
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return false; |
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} |
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int screens = xcb_randr_get_monitors_monitors_length(monitors); |
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DEBUG("%d RandR monitors found (timestamp %d)\n", |
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screens, monitors->timestamp); |
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Rect *resolutions = malloc(screens * sizeof(Rect)); |
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/* No memory? Just keep on using the old information. */ |
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if (!resolutions) { |
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free(monitors); |
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return true; |
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} |
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xcb_randr_monitor_info_iterator_t iter; |
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int screen; |
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for (iter = xcb_randr_get_monitors_monitors_iterator(monitors), screen = 0; |
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iter.rem; |
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xcb_randr_monitor_info_next(&iter), screen++) { |
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const xcb_randr_monitor_info_t *monitor_info = iter.data; |
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resolutions[screen].x = monitor_info->x; |
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resolutions[screen].y = monitor_info->y; |
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resolutions[screen].width = monitor_info->width; |
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resolutions[screen].height = monitor_info->height; |
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DEBUG("found RandR monitor: %d x %d at %d x %d\n", |
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monitor_info->width, monitor_info->height, |
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monitor_info->x, monitor_info->y); |
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} |
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free(xr_resolutions); |
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xr_resolutions = resolutions; |
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xr_screens = screens; |
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free(monitors); |
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return true; |
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#endif |
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} |
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/*
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* randr_query_outputs_14 uses RandR ≤ 1.4 to update outputs. |
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* |
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*/ |
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static bool _randr_query_outputs_14(xcb_window_t root) { |
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if (!has_randr) { |
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return false; |
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} |
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DEBUG("Querying outputs using RandR ≤ 1.4\n"); |
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/* Get screen resources (primary output, crtcs, outputs, modes) */ |
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xcb_randr_get_screen_resources_current_cookie_t rcookie; |
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rcookie = xcb_randr_get_screen_resources_current(conn, root); |
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xcb_randr_get_screen_resources_current_reply_t *res = |
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xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL); |
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if (res == NULL) { |
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DEBUG("Could not query screen resources.\n"); |
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return false; |
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} |
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/* timestamp of the configuration so that we get consistent replies to all
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* requests (if the configuration changes between our different calls) */ |
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const xcb_timestamp_t cts = res->config_timestamp; |
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const int len = xcb_randr_get_screen_resources_current_outputs_length(res); |
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/* an output is VGA-1, LVDS-1, etc. (usually physical video outputs) */ |
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xcb_randr_output_t *randr_outputs = xcb_randr_get_screen_resources_current_outputs(res); |
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/* Request information for each output */ |
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xcb_randr_get_output_info_cookie_t ocookie[len]; |
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for (int i = 0; i < len; i++) { |
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ocookie[i] = xcb_randr_get_output_info(conn, randr_outputs[i], cts); |
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} |
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Rect *resolutions = malloc(len * sizeof(Rect)); |
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/* No memory? Just keep on using the old information. */ |
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if (!resolutions) { |
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free(res); |
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return true; |
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} |
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/* Loop through all outputs available for this X11 screen */ |
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int screen = 0; |
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for (int i = 0; i < len; i++) { |
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xcb_randr_get_output_info_reply_t *output; |
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if ((output = xcb_randr_get_output_info_reply(conn, ocookie[i], NULL)) == NULL) { |
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continue; |
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} |
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if (output->crtc == XCB_NONE) { |
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free(output); |
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continue; |
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} |
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xcb_randr_get_crtc_info_cookie_t icookie; |
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xcb_randr_get_crtc_info_reply_t *crtc; |
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icookie = xcb_randr_get_crtc_info(conn, output->crtc, cts); |
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if ((crtc = xcb_randr_get_crtc_info_reply(conn, icookie, NULL)) == NULL) { |
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DEBUG("Skipping output: could not get CRTC (0x%08x)\n", output->crtc); |
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free(output); |
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continue; |
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} |
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resolutions[screen].x = crtc->x; |
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resolutions[screen].y = crtc->y; |
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resolutions[screen].width = crtc->width; |
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resolutions[screen].height = crtc->height; |
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DEBUG("found RandR output: %d x %d at %d x %d\n", |
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crtc->width, crtc->height, |
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crtc->x, crtc->y); |
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screen++; |
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free(crtc); |
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free(output); |
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} |
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free(xr_resolutions); |
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xr_resolutions = resolutions; |
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xr_screens = screen; |
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free(res); |
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return true; |
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} |
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void _xinerama_query_screens(void) { |
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if (!xinerama_active) { |
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return; |
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} |
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xcb_xinerama_query_screens_cookie_t cookie; |
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xcb_xinerama_query_screens_reply_t *reply; |
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xcb_xinerama_screen_info_t *screen_info; |
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xcb_generic_error_t *err; |
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cookie = xcb_xinerama_query_screens_unchecked(conn); |
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reply = xcb_xinerama_query_screens_reply(conn, cookie, &err); |
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if (!reply) { |
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DEBUG("Couldn't get Xinerama screens: X11 error code %d\n", err->error_code); |
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free(err); |
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return; |
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} |
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screen_info = xcb_xinerama_query_screens_screen_info(reply); |
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int screens = xcb_xinerama_query_screens_screen_info_length(reply); |
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Rect *resolutions = malloc(screens * sizeof(Rect)); |
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/* No memory? Just keep on using the old information. */ |
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if (!resolutions) { |
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free(reply); |
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return; |
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} |
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for (int screen = 0; screen < xr_screens; screen++) { |
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resolutions[screen].x = screen_info[screen].x_org; |
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resolutions[screen].y = screen_info[screen].y_org; |
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resolutions[screen].width = screen_info[screen].width; |
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resolutions[screen].height = screen_info[screen].height; |
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DEBUG("found Xinerama screen: %d x %d at %d x %d\n", |
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screen_info[screen].width, screen_info[screen].height, |
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screen_info[screen].x_org, screen_info[screen].y_org); |
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} |
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free(xr_resolutions); |
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xr_resolutions = resolutions; |
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xr_screens = screens; |
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free(reply); |
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} |
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void randr_query(xcb_window_t root) { |
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if (_randr_query_monitors_15(root)) { |
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return; |
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} |
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if (_randr_query_outputs_14(root)) { |
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return; |
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} |
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_xinerama_query_screens(); |
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} |
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@ -1,90 +0,0 @@ |
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/*
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* vim:ts=4:sw=4:expandtab |
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* |
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* © 2010 Michael Stapelberg |
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* |
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* See LICENSE for licensing information |
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* |
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*/ |
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#include <stdbool.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <math.h> |
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#include <xcb/xcb.h> |
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#include <xcb/xinerama.h> |
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#include "i3lock.h" |
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#include "xcb.h" |
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#include "xinerama.h" |
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/* Number of Xinerama screens which are currently present. */ |
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int xr_screens = 0; |
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/* The resolutions of the currently present Xinerama screens. */ |
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Rect *xr_resolutions; |
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static bool xinerama_active; |
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extern bool debug_mode; |
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void xinerama_init(void) { |
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if (!xcb_get_extension_data(conn, &xcb_xinerama_id)->present) { |
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DEBUG("Xinerama extension not found, disabling.\n"); |
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return; |
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} |
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xcb_xinerama_is_active_cookie_t cookie; |
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xcb_xinerama_is_active_reply_t *reply; |
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cookie = xcb_xinerama_is_active(conn); |
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reply = xcb_xinerama_is_active_reply(conn, cookie, NULL); |
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if (!reply) |
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return; |
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if (!reply->state) { |
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free(reply); |
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return; |
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} |
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xinerama_active = true; |
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free(reply); |
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} |
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void xinerama_query_screens(void) { |
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if (!xinerama_active) |
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return; |
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xcb_xinerama_query_screens_cookie_t cookie; |
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xcb_xinerama_query_screens_reply_t *reply; |
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xcb_xinerama_screen_info_t *screen_info; |
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cookie = xcb_xinerama_query_screens_unchecked(conn); |
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reply = xcb_xinerama_query_screens_reply(conn, cookie, NULL); |
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if (!reply) { |
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if (debug_mode) |
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fprintf(stderr, "Couldn't get Xinerama screens\n"); |
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return; |
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} |
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screen_info = xcb_xinerama_query_screens_screen_info(reply); |
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int screens = xcb_xinerama_query_screens_screen_info_length(reply); |
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Rect *resolutions = malloc(screens * sizeof(Rect)); |
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/* No memory? Just keep on using the old information. */ |
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if (!resolutions) { |
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free(reply); |
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return; |
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} |
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xr_resolutions = resolutions; |
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xr_screens = screens; |
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for (int screen = 0; screen < xr_screens; screen++) { |
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xr_resolutions[screen].x = screen_info[screen].x_org; |
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xr_resolutions[screen].y = screen_info[screen].y_org; |
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xr_resolutions[screen].width = screen_info[screen].width; |
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xr_resolutions[screen].height = screen_info[screen].height; |
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DEBUG("found Xinerama screen: %d x %d at %d x %d\n", |
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screen_info[screen].width, screen_info[screen].height, |
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screen_info[screen].x_org, screen_info[screen].y_org); |
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} |
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free(reply); |
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} |
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