1107 lines
38 KiB
C
1107 lines
38 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* For more information on RandR, please see the X.org RandR specification at
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* https://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt
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* (take your time to read it completely, it answers all questions).
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*
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*/
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#include "all.h"
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#include <time.h>
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#include <xcb/randr.h>
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/* Pointer to the result of the query for primary output */
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xcb_randr_get_output_primary_reply_t *primary;
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/* Stores all outputs available in your current session. */
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struct outputs_head outputs = TAILQ_HEAD_INITIALIZER(outputs);
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/* This is the output covering the root window */
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static Output *root_output;
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static bool has_randr_1_5 = false;
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/*
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* Get a specific output by its internal X11 id. Used by randr_query_outputs
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* to check if the output is new (only in the first scan) or if we are
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* re-scanning.
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*
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*/
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static Output *get_output_by_id(xcb_randr_output_t id) {
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Output *output;
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TAILQ_FOREACH (output, &outputs, outputs) {
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if (output->id == id) {
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return output;
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}
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}
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return NULL;
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}
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/*
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* Returns the output with the given name or NULL.
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* If require_active is true, only active outputs are considered.
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*
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*/
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Output *get_output_by_name(const char *name, const bool require_active) {
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Output *output;
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bool get_primary = (strcasecmp("primary", name) == 0);
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TAILQ_FOREACH (output, &outputs, outputs) {
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if (output->primary && get_primary) {
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return output;
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}
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if (require_active && !output->active) {
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continue;
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}
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struct output_name *output_name;
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SLIST_FOREACH (output_name, &output->names_head, names) {
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if (strcasecmp(output_name->name, name) == 0) {
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return output;
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}
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}
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}
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return NULL;
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}
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/*
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* Returns the first output which is active.
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*
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*/
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Output *get_first_output(void) {
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Output *output, *result = NULL;
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TAILQ_FOREACH (output, &outputs, outputs) {
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if (output->active) {
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if (output->primary) {
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return output;
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}
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if (!result) {
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result = output;
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}
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}
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}
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if (result) {
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return result;
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}
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die("No usable outputs available.\n");
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}
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/*
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* Check whether there are any active outputs (excluding the root output).
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*
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*/
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static bool any_randr_output_active(void) {
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Output *output;
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TAILQ_FOREACH (output, &outputs, outputs) {
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if (output != root_output && !output->to_be_disabled && output->active)
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return true;
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}
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return false;
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}
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/*
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* Returns the active (!) output which contains the coordinates x, y or NULL
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* if there is no output which contains these coordinates.
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*
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*/
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Output *get_output_containing(unsigned int x, unsigned int y) {
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Output *output;
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TAILQ_FOREACH (output, &outputs, outputs) {
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if (!output->active)
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continue;
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DLOG("comparing x=%d y=%d with x=%d and y=%d width %d height %d\n",
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x, y, output->rect.x, output->rect.y, output->rect.width, output->rect.height);
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if (x >= output->rect.x && x < (output->rect.x + output->rect.width) &&
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y >= output->rect.y && y < (output->rect.y + output->rect.height))
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return output;
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}
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return NULL;
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}
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/*
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* Returns the active output which contains the midpoint of the given rect. If
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* such an output doesn't exist, returns the output which contains most of the
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* rectangle or NULL if there is no output which intersects with it.
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*
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*/
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Output *get_output_from_rect(Rect rect) {
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unsigned int mid_x = rect.x + rect.width / 2;
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unsigned int mid_y = rect.y + rect.height / 2;
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Output *output = get_output_containing(mid_x, mid_y);
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return output ? output : output_containing_rect(rect);
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}
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/*
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* Returns the active output which spans exactly the area specified by
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* rect or NULL if there is no output like this.
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*
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*/
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Output *get_output_with_dimensions(Rect rect) {
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Output *output;
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TAILQ_FOREACH (output, &outputs, outputs) {
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if (!output->active)
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continue;
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DLOG("comparing x=%d y=%d %dx%d with x=%d and y=%d %dx%d\n",
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rect.x, rect.y, rect.width, rect.height,
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output->rect.x, output->rect.y, output->rect.width, output->rect.height);
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if (rect.x == output->rect.x && rect.width == output->rect.width &&
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rect.y == output->rect.y && rect.height == output->rect.height)
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return output;
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}
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return NULL;
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}
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/*
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* In output_containing_rect, we check if any active output contains part of the container.
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* We do this by checking if the output rect is intersected by the Rect.
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* This is the 2-dimensional counterpart of get_output_containing.
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* Returns the output with the maximum intersecting area.
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*
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*/
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Output *output_containing_rect(Rect rect) {
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Output *output;
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int lx = rect.x, uy = rect.y;
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int rx = rect.x + rect.width, by = rect.y + rect.height;
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long max_area = 0;
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Output *result = NULL;
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TAILQ_FOREACH (output, &outputs, outputs) {
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if (!output->active)
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continue;
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int lx_o = (int)output->rect.x, uy_o = (int)output->rect.y;
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int rx_o = (int)(output->rect.x + output->rect.width), by_o = (int)(output->rect.y + output->rect.height);
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DLOG("comparing x=%d y=%d with x=%d and y=%d width %d height %d\n",
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rect.x, rect.y, output->rect.x, output->rect.y, output->rect.width, output->rect.height);
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int left = max(lx, lx_o);
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int right = min(rx, rx_o);
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int bottom = min(by, by_o);
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int top = max(uy, uy_o);
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if (left < right && bottom > top) {
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long area = (right - left) * (bottom - top);
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if (area > max_area) {
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result = output;
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}
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}
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}
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return result;
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}
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/*
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* Like get_output_next with close_far == CLOSEST_OUTPUT, but wraps.
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*
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* For example if get_output_next(D_DOWN, x, FARTHEST_OUTPUT) = NULL, then
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* get_output_next_wrap(D_DOWN, x) will return the topmost output.
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*
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* This function always returns a output: if no active outputs can be found,
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* current itself is returned.
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*
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*/
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Output *get_output_next_wrap(direction_t direction, Output *current) {
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Output *best = get_output_next(direction, current, CLOSEST_OUTPUT);
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/* If no output can be found, wrap */
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if (!best) {
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direction_t opposite;
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if (direction == D_RIGHT)
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opposite = D_LEFT;
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else if (direction == D_LEFT)
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opposite = D_RIGHT;
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else if (direction == D_DOWN)
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opposite = D_UP;
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else
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opposite = D_DOWN;
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best = get_output_next(opposite, current, FARTHEST_OUTPUT);
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}
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if (!best)
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best = current;
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DLOG("current = %s, best = %s\n", output_primary_name(current), output_primary_name(best));
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return best;
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}
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/*
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* Gets the output which is the next one in the given direction.
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*
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* If close_far == CLOSEST_OUTPUT, then the output next to the current one will
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* selected. If close_far == FARTHEST_OUTPUT, the output which is the last one
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* in the given direction will be selected.
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*
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* NULL will be returned when no active outputs are present in the direction
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* specified (note that “current” counts as such an output).
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*
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*/
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Output *get_output_next(direction_t direction, Output *current, output_close_far_t close_far) {
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Rect *cur = &(current->rect),
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*other;
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Output *output,
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*best = NULL;
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TAILQ_FOREACH (output, &outputs, outputs) {
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if (!output->active)
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continue;
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other = &(output->rect);
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if ((direction == D_RIGHT && other->x > cur->x) ||
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(direction == D_LEFT && other->x < cur->x)) {
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/* Skip the output when it doesn’t overlap the other one’s y
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* coordinate at all. */
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if ((other->y + other->height) <= cur->y ||
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(cur->y + cur->height) <= other->y)
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continue;
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} else if ((direction == D_DOWN && other->y > cur->y) ||
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(direction == D_UP && other->y < cur->y)) {
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/* Skip the output when it doesn’t overlap the other one’s x
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* coordinate at all. */
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if ((other->x + other->width) <= cur->x ||
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(cur->x + cur->width) <= other->x)
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continue;
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} else
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continue;
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/* No candidate yet? Start with this one. */
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if (!best) {
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best = output;
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continue;
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}
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if (close_far == CLOSEST_OUTPUT) {
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/* Is this output better (closer to the current output) than our
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* current best bet? */
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if ((direction == D_RIGHT && other->x < best->rect.x) ||
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(direction == D_LEFT && other->x > best->rect.x) ||
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(direction == D_DOWN && other->y < best->rect.y) ||
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(direction == D_UP && other->y > best->rect.y)) {
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best = output;
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continue;
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}
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} else {
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/* Is this output better (farther to the current output) than our
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* current best bet? */
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if ((direction == D_RIGHT && other->x > best->rect.x) ||
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(direction == D_LEFT && other->x < best->rect.x) ||
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(direction == D_DOWN && other->y > best->rect.y) ||
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(direction == D_UP && other->y < best->rect.y)) {
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best = output;
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continue;
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}
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}
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}
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DLOG("current = %s, best = %s\n", output_primary_name(current), (best ? output_primary_name(best) : "NULL"));
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return best;
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}
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/*
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* Creates an output covering the root window.
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*
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*/
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Output *create_root_output(xcb_connection_t *conn) {
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Output *s = scalloc(1, sizeof(Output));
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s->active = false;
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s->rect.x = 0;
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s->rect.y = 0;
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s->rect.width = root_screen->width_in_pixels;
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s->rect.height = root_screen->height_in_pixels;
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struct output_name *output_name = scalloc(1, sizeof(struct output_name));
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output_name->name = "xroot-0";
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SLIST_INIT(&s->names_head);
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SLIST_INSERT_HEAD(&s->names_head, output_name, names);
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return s;
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}
|
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|
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/*
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* Initializes a CT_OUTPUT Con (searches existing ones from inplace restart
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* before) to use for the given Output.
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*
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*/
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void output_init_con(Output *output) {
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Con *con = NULL, *current;
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bool reused = false;
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DLOG("init_con for output %s\n", output_primary_name(output));
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/* Search for a Con with that name directly below the root node. There
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* might be one from a restored layout. */
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TAILQ_FOREACH (current, &(croot->nodes_head), nodes) {
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if (strcmp(current->name, output_primary_name(output)) != 0)
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continue;
|
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con = current;
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reused = true;
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DLOG("Using existing con %p / %s\n", con, con->name);
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break;
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}
|
||
|
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if (con == NULL) {
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con = con_new(croot, NULL);
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FREE(con->name);
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con->name = sstrdup(output_primary_name(output));
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con->type = CT_OUTPUT;
|
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con->layout = L_OUTPUT;
|
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con_fix_percent(croot);
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}
|
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con->rect = output->rect;
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output->con = con;
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|
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char *name;
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sasprintf(&name, "[i3 con] output %s", con->name);
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x_set_name(con, name);
|
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FREE(name);
|
||
|
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if (reused) {
|
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DLOG("Not adding workspace, this was a reused con\n");
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||
return;
|
||
}
|
||
|
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DLOG("Changing layout, adding top/bottom dockarea\n");
|
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Con *topdock = con_new(NULL, NULL);
|
||
topdock->type = CT_DOCKAREA;
|
||
topdock->layout = L_DOCKAREA;
|
||
/* this container swallows dock clients */
|
||
Match *match = scalloc(1, sizeof(Match));
|
||
match_init(match);
|
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match->dock = M_DOCK_TOP;
|
||
match->insert_where = M_BELOW;
|
||
TAILQ_INSERT_TAIL(&(topdock->swallow_head), match, matches);
|
||
|
||
FREE(topdock->name);
|
||
topdock->name = sstrdup("topdock");
|
||
|
||
sasprintf(&name, "[i3 con] top dockarea %s", con->name);
|
||
x_set_name(topdock, name);
|
||
FREE(name);
|
||
DLOG("attaching\n");
|
||
con_attach(topdock, con, false);
|
||
|
||
/* content container */
|
||
|
||
DLOG("adding main content container\n");
|
||
Con *content = con_new(NULL, NULL);
|
||
content->type = CT_CON;
|
||
content->layout = L_SPLITH;
|
||
FREE(content->name);
|
||
content->name = sstrdup("content");
|
||
|
||
sasprintf(&name, "[i3 con] content %s", con->name);
|
||
x_set_name(content, name);
|
||
FREE(name);
|
||
con_attach(content, con, false);
|
||
|
||
/* bottom dock container */
|
||
Con *bottomdock = con_new(NULL, NULL);
|
||
bottomdock->type = CT_DOCKAREA;
|
||
bottomdock->layout = L_DOCKAREA;
|
||
/* this container swallows dock clients */
|
||
match = scalloc(1, sizeof(Match));
|
||
match_init(match);
|
||
match->dock = M_DOCK_BOTTOM;
|
||
match->insert_where = M_BELOW;
|
||
TAILQ_INSERT_TAIL(&(bottomdock->swallow_head), match, matches);
|
||
|
||
FREE(bottomdock->name);
|
||
bottomdock->name = sstrdup("bottomdock");
|
||
|
||
sasprintf(&name, "[i3 con] bottom dockarea %s", con->name);
|
||
x_set_name(bottomdock, name);
|
||
FREE(name);
|
||
DLOG("attaching\n");
|
||
con_attach(bottomdock, con, false);
|
||
|
||
/* Change focus to the content container */
|
||
TAILQ_REMOVE(&(con->focus_head), content, focused);
|
||
TAILQ_INSERT_HEAD(&(con->focus_head), content, focused);
|
||
}
|
||
|
||
/*
|
||
* Initializes at least one workspace for this output, trying the following
|
||
* steps until there is at least one workspace:
|
||
*
|
||
* • Move existing workspaces, which are assigned to be on the given output, to
|
||
* the output.
|
||
* • Create the first assigned workspace for this output.
|
||
* • Create the first unused workspace.
|
||
*
|
||
*/
|
||
void init_ws_for_output(Output *output) {
|
||
Con *content = output_get_content(output->con);
|
||
Con *previous_focus = con_get_workspace(focused);
|
||
|
||
/* go through all assignments and move the existing workspaces to this output */
|
||
struct Workspace_Assignment *assignment;
|
||
TAILQ_FOREACH (assignment, &ws_assignments, ws_assignments) {
|
||
if (!output_triggers_assignment(output, assignment)) {
|
||
continue;
|
||
}
|
||
Con *workspace = get_existing_workspace_by_name(assignment->name);
|
||
if (workspace == NULL)
|
||
continue;
|
||
|
||
/* check that this workspace is not already attached (that means the
|
||
* user configured this assignment twice) */
|
||
Con *workspace_out = con_get_output(workspace);
|
||
if (workspace_out == output->con) {
|
||
LOG("Workspace \"%s\" assigned to output \"%s\", but it is already "
|
||
"there. Do you have two assignment directives for the same "
|
||
"workspace in your configuration file?\n",
|
||
workspace->name, output_primary_name(output));
|
||
continue;
|
||
}
|
||
|
||
DLOG("Moving workspace \"%s\" from output \"%s\" to \"%s\" due to assignment\n",
|
||
workspace->name, workspace_out->name, output_primary_name(output));
|
||
/* Need to copy output's rect since content is not yet rendered. We
|
||
* can't call render_con here because render_output only proceeds if a
|
||
* workspace exists. */
|
||
content->rect = output->con->rect;
|
||
workspace_move_to_output(workspace, output);
|
||
}
|
||
|
||
/* Temporarily set the focused container, might not be initialized yet. */
|
||
focused = content;
|
||
|
||
/* if a workspace exists, we are done now */
|
||
if (!TAILQ_EMPTY(&(content->nodes_head))) {
|
||
/* ensure that one of the workspaces is actually visible (in fullscreen
|
||
* mode), if they were invisible before, this might not be the case. */
|
||
Con *visible = NULL;
|
||
GREP_FIRST(visible, content, child->fullscreen_mode == CF_OUTPUT);
|
||
if (!visible) {
|
||
visible = TAILQ_FIRST(&(content->nodes_head));
|
||
workspace_show(visible);
|
||
}
|
||
goto restore_focus;
|
||
}
|
||
|
||
/* otherwise, we create the first assigned ws for this output */
|
||
TAILQ_FOREACH (assignment, &ws_assignments, ws_assignments) {
|
||
if (!output_triggers_assignment(output, assignment)) {
|
||
continue;
|
||
}
|
||
|
||
LOG("Initializing first assigned workspace \"%s\" for output \"%s\"\n",
|
||
assignment->name, assignment->output);
|
||
workspace_show_by_name(assignment->name);
|
||
goto restore_focus;
|
||
}
|
||
|
||
/* if there is still no workspace, we create the first free workspace */
|
||
DLOG("Now adding a workspace\n");
|
||
workspace_show(create_workspace_on_output(output, content));
|
||
|
||
restore_focus:
|
||
if (previous_focus) {
|
||
workspace_show(previous_focus);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* This function needs to be called when changing the mode of an output when
|
||
* it already has some workspaces (or a bar window) assigned.
|
||
*
|
||
* It reconfigures the bar window for the new mode, copies the new rect into
|
||
* each workspace on this output and forces all windows on the affected
|
||
* workspaces to be reconfigured.
|
||
*
|
||
* It is necessary to call render_layout() afterwards.
|
||
*
|
||
*/
|
||
static void output_change_mode(xcb_connection_t *conn, Output *output) {
|
||
DLOG("Output mode changed, updating rect\n");
|
||
assert(output->con != NULL);
|
||
output->con->rect = output->rect;
|
||
|
||
Con *content, *workspace, *child;
|
||
|
||
/* Point content to the container of the workspaces */
|
||
content = output_get_content(output->con);
|
||
|
||
/* Fix the position of all floating windows on this output.
|
||
* The 'rect' of each workspace will be updated in src/render.c. */
|
||
TAILQ_FOREACH (workspace, &(content->nodes_head), nodes) {
|
||
TAILQ_FOREACH (child, &(workspace->floating_head), floating_windows) {
|
||
floating_fix_coordinates(child, &(workspace->rect), &(output->con->rect));
|
||
}
|
||
}
|
||
|
||
/* If default_orientation is NO_ORIENTATION, we change the orientation of
|
||
* the workspaces and their children depending on output resolution. This is
|
||
* only done for workspaces with maximum one child. */
|
||
if (config.default_orientation == NO_ORIENTATION) {
|
||
TAILQ_FOREACH (workspace, &(content->nodes_head), nodes) {
|
||
/* Workspaces with more than one child are left untouched because
|
||
* we do not want to change an existing layout. */
|
||
if (con_num_children(workspace) > 1)
|
||
continue;
|
||
|
||
workspace->layout = (output->rect.height > output->rect.width) ? L_SPLITV : L_SPLITH;
|
||
DLOG("Setting workspace [%d,%s]'s layout to %d.\n", workspace->num, workspace->name, workspace->layout);
|
||
if ((child = TAILQ_FIRST(&(workspace->nodes_head)))) {
|
||
if (child->layout == L_SPLITV || child->layout == L_SPLITH)
|
||
child->layout = workspace->layout;
|
||
DLOG("Setting child [%d,%s]'s layout to %d.\n", child->num, child->name, child->layout);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* randr_query_outputs_15 uses RandR ≥ 1.5 to update outputs.
|
||
*
|
||
*/
|
||
static bool randr_query_outputs_15(void) {
|
||
#if XCB_RANDR_MINOR_VERSION < 5
|
||
return false;
|
||
#else
|
||
/* RandR 1.5 available at compile-time, i.e. libxcb is new enough */
|
||
if (!has_randr_1_5) {
|
||
return false;
|
||
}
|
||
/* RandR 1.5 available at run-time (supported by the server and not
|
||
* disabled by the user) */
|
||
DLOG("Querying outputs using RandR 1.5\n");
|
||
xcb_generic_error_t *err;
|
||
xcb_randr_get_monitors_reply_t *monitors =
|
||
xcb_randr_get_monitors_reply(
|
||
conn, xcb_randr_get_monitors(conn, root, true), &err);
|
||
if (err != NULL) {
|
||
ELOG("Could not get RandR monitors: X11 error code %d\n", err->error_code);
|
||
free(err);
|
||
/* Fall back to RandR ≤ 1.4 */
|
||
return false;
|
||
}
|
||
|
||
/* Mark all outputs as to_be_disabled, since xcb_randr_get_monitors() will
|
||
* only return active outputs. */
|
||
Output *output;
|
||
TAILQ_FOREACH (output, &outputs, outputs) {
|
||
if (output != root_output) {
|
||
output->to_be_disabled = true;
|
||
}
|
||
}
|
||
|
||
DLOG("%d RandR monitors found (timestamp %d)\n",
|
||
xcb_randr_get_monitors_monitors_length(monitors),
|
||
monitors->timestamp);
|
||
|
||
xcb_randr_monitor_info_iterator_t iter;
|
||
for (iter = xcb_randr_get_monitors_monitors_iterator(monitors);
|
||
iter.rem;
|
||
xcb_randr_monitor_info_next(&iter)) {
|
||
const xcb_randr_monitor_info_t *monitor_info = iter.data;
|
||
xcb_get_atom_name_reply_t *atom_reply =
|
||
xcb_get_atom_name_reply(
|
||
conn, xcb_get_atom_name(conn, monitor_info->name), &err);
|
||
if (err != NULL) {
|
||
ELOG("Could not get RandR monitor name: X11 error code %d\n", err->error_code);
|
||
free(err);
|
||
continue;
|
||
}
|
||
char *name;
|
||
sasprintf(&name, "%.*s",
|
||
xcb_get_atom_name_name_length(atom_reply),
|
||
xcb_get_atom_name_name(atom_reply));
|
||
free(atom_reply);
|
||
|
||
Output *new = get_output_by_name(name, false);
|
||
if (new == NULL) {
|
||
new = scalloc(1, sizeof(Output));
|
||
|
||
SLIST_INIT(&new->names_head);
|
||
|
||
/* Register associated output names in addition to the monitor name */
|
||
xcb_randr_output_t *randr_outputs = xcb_randr_monitor_info_outputs(monitor_info);
|
||
int randr_output_len = xcb_randr_monitor_info_outputs_length(monitor_info);
|
||
for (int i = 0; i < randr_output_len; i++) {
|
||
xcb_randr_output_t randr_output = randr_outputs[i];
|
||
|
||
xcb_randr_get_output_info_reply_t *info =
|
||
xcb_randr_get_output_info_reply(conn,
|
||
xcb_randr_get_output_info(conn, randr_output, monitors->timestamp),
|
||
NULL);
|
||
|
||
if (info != NULL && info->crtc != XCB_NONE) {
|
||
char *oname;
|
||
sasprintf(&oname, "%.*s",
|
||
xcb_randr_get_output_info_name_length(info),
|
||
xcb_randr_get_output_info_name(info));
|
||
|
||
if (strcmp(name, oname) != 0) {
|
||
struct output_name *output_name = scalloc(1, sizeof(struct output_name));
|
||
output_name->name = sstrdup(oname);
|
||
SLIST_INSERT_HEAD(&new->names_head, output_name, names);
|
||
} else {
|
||
free(oname);
|
||
}
|
||
}
|
||
FREE(info);
|
||
}
|
||
|
||
/* Insert the monitor name last, so that it's used as the primary name */
|
||
struct output_name *output_name = scalloc(1, sizeof(struct output_name));
|
||
output_name->name = sstrdup(name);
|
||
SLIST_INSERT_HEAD(&new->names_head, output_name, names);
|
||
|
||
if (monitor_info->primary) {
|
||
TAILQ_INSERT_HEAD(&outputs, new, outputs);
|
||
} else {
|
||
TAILQ_INSERT_TAIL(&outputs, new, outputs);
|
||
}
|
||
}
|
||
/* We specified get_active == true in xcb_randr_get_monitors(), so we
|
||
* will only receive active outputs. */
|
||
new->active = true;
|
||
new->to_be_disabled = false;
|
||
|
||
new->primary = monitor_info->primary;
|
||
|
||
new->changed =
|
||
update_if_necessary(&(new->rect.x), monitor_info->x) |
|
||
update_if_necessary(&(new->rect.y), monitor_info->y) |
|
||
update_if_necessary(&(new->rect.width), monitor_info->width) |
|
||
update_if_necessary(&(new->rect.height), monitor_info->height);
|
||
|
||
DLOG("name %s, x %d, y %d, width %d px, height %d px, width %d mm, height %d mm, primary %d, automatic %d\n",
|
||
name,
|
||
monitor_info->x, monitor_info->y, monitor_info->width, monitor_info->height,
|
||
monitor_info->width_in_millimeters, monitor_info->height_in_millimeters,
|
||
monitor_info->primary, monitor_info->automatic);
|
||
free(name);
|
||
}
|
||
free(monitors);
|
||
return true;
|
||
#endif
|
||
}
|
||
|
||
/*
|
||
* Gets called by randr_query_outputs_14() for each output. The function adds
|
||
* new outputs to the list of outputs, checks if the mode of existing outputs
|
||
* has been changed or if an existing output has been disabled. It will then
|
||
* change either the "changed" or the "to_be_deleted" flag of the output, if
|
||
* appropriate.
|
||
*
|
||
*/
|
||
static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
|
||
xcb_randr_get_output_info_reply_t *output,
|
||
xcb_timestamp_t cts,
|
||
xcb_randr_get_screen_resources_current_reply_t *res) {
|
||
/* each CRT controller has a position in which we are interested in */
|
||
xcb_randr_get_crtc_info_reply_t *crtc;
|
||
|
||
Output *new = get_output_by_id(id);
|
||
bool existing = (new != NULL);
|
||
if (!existing) {
|
||
new = scalloc(1, sizeof(Output));
|
||
SLIST_INIT(&new->names_head);
|
||
}
|
||
new->id = id;
|
||
new->primary = (primary && primary->output == id);
|
||
while (!SLIST_EMPTY(&new->names_head)) {
|
||
FREE(SLIST_FIRST(&new->names_head)->name);
|
||
struct output_name *old_head = SLIST_FIRST(&new->names_head);
|
||
SLIST_REMOVE_HEAD(&new->names_head, names);
|
||
FREE(old_head);
|
||
}
|
||
struct output_name *output_name = scalloc(1, sizeof(struct output_name));
|
||
sasprintf(&output_name->name, "%.*s",
|
||
xcb_randr_get_output_info_name_length(output),
|
||
xcb_randr_get_output_info_name(output));
|
||
SLIST_INSERT_HEAD(&new->names_head, output_name, names);
|
||
|
||
DLOG("found output with name %s\n", output_primary_name(new));
|
||
|
||
/* Even if no CRTC is used at the moment, we store the output so that
|
||
* we do not need to change the list ever again (we only update the
|
||
* position/size) */
|
||
if (output->crtc == XCB_NONE) {
|
||
if (!existing) {
|
||
if (new->primary)
|
||
TAILQ_INSERT_HEAD(&outputs, new, outputs);
|
||
else
|
||
TAILQ_INSERT_TAIL(&outputs, new, outputs);
|
||
} else if (new->active)
|
||
new->to_be_disabled = true;
|
||
return;
|
||
}
|
||
|
||
xcb_randr_get_crtc_info_cookie_t icookie;
|
||
icookie = xcb_randr_get_crtc_info(conn, output->crtc, cts);
|
||
if ((crtc = xcb_randr_get_crtc_info_reply(conn, icookie, NULL)) == NULL) {
|
||
DLOG("Skipping output %s: could not get CRTC (%p)\n",
|
||
output_primary_name(new), crtc);
|
||
free(new);
|
||
return;
|
||
}
|
||
|
||
bool updated = update_if_necessary(&(new->rect.x), crtc->x) |
|
||
update_if_necessary(&(new->rect.y), crtc->y) |
|
||
update_if_necessary(&(new->rect.width), crtc->width) |
|
||
update_if_necessary(&(new->rect.height), crtc->height);
|
||
free(crtc);
|
||
new->active = (new->rect.width != 0 && new->rect.height != 0);
|
||
if (!new->active) {
|
||
DLOG("width/height 0/0, disabling output\n");
|
||
return;
|
||
}
|
||
|
||
DLOG("mode: %dx%d+%d+%d\n", new->rect.width, new->rect.height,
|
||
new->rect.x, new->rect.y);
|
||
|
||
/* If we don’t need to change an existing output or if the output
|
||
* does not exist in the first place, the case is simple: we either
|
||
* need to insert the new output or we are done. */
|
||
if (!updated || !existing) {
|
||
if (!existing) {
|
||
if (new->primary)
|
||
TAILQ_INSERT_HEAD(&outputs, new, outputs);
|
||
else
|
||
TAILQ_INSERT_TAIL(&outputs, new, outputs);
|
||
}
|
||
return;
|
||
}
|
||
|
||
new->changed = true;
|
||
}
|
||
|
||
/*
|
||
* randr_query_outputs_14 uses RandR ≤ 1.4 to update outputs.
|
||
*
|
||
*/
|
||
static void randr_query_outputs_14(void) {
|
||
DLOG("Querying outputs using RandR ≤ 1.4\n");
|
||
|
||
/* Get screen resources (primary output, crtcs, outputs, modes) */
|
||
xcb_randr_get_screen_resources_current_cookie_t rcookie;
|
||
rcookie = xcb_randr_get_screen_resources_current(conn, root);
|
||
xcb_randr_get_output_primary_cookie_t pcookie;
|
||
pcookie = xcb_randr_get_output_primary(conn, root);
|
||
|
||
if ((primary = xcb_randr_get_output_primary_reply(conn, pcookie, NULL)) == NULL)
|
||
ELOG("Could not get RandR primary output\n");
|
||
else
|
||
DLOG("primary output is %08x\n", primary->output);
|
||
|
||
xcb_randr_get_screen_resources_current_reply_t *res =
|
||
xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL);
|
||
if (res == NULL) {
|
||
ELOG("Could not query screen resources.\n");
|
||
return;
|
||
}
|
||
|
||
/* timestamp of the configuration so that we get consistent replies to all
|
||
* requests (if the configuration changes between our different calls) */
|
||
const xcb_timestamp_t cts = res->config_timestamp;
|
||
|
||
const int len = xcb_randr_get_screen_resources_current_outputs_length(res);
|
||
|
||
/* an output is VGA-1, LVDS-1, etc. (usually physical video outputs) */
|
||
xcb_randr_output_t *randr_outputs = xcb_randr_get_screen_resources_current_outputs(res);
|
||
|
||
/* Request information for each output */
|
||
xcb_randr_get_output_info_cookie_t ocookie[len];
|
||
for (int i = 0; i < len; i++)
|
||
ocookie[i] = xcb_randr_get_output_info(conn, randr_outputs[i], cts);
|
||
|
||
/* Loop through all outputs available for this X11 screen */
|
||
for (int i = 0; i < len; i++) {
|
||
xcb_randr_get_output_info_reply_t *output;
|
||
|
||
if ((output = xcb_randr_get_output_info_reply(conn, ocookie[i], NULL)) == NULL)
|
||
continue;
|
||
|
||
handle_output(conn, randr_outputs[i], output, cts, res);
|
||
free(output);
|
||
}
|
||
|
||
FREE(res);
|
||
}
|
||
|
||
/*
|
||
* Move the content of an outputs container to the first output.
|
||
*
|
||
* TODO: Maybe use an on_destroy callback which is implement differently for
|
||
* different container types (CT_CONTENT vs. CT_DOCKAREA)?
|
||
*
|
||
*/
|
||
static void move_content(Con *con) {
|
||
Con *first = get_first_output()->con;
|
||
Con *first_content = output_get_content(first);
|
||
|
||
/* We need to move the workspaces from the disappearing output to the first output */
|
||
/* 1: Get the con to focus next */
|
||
Con *next = focused;
|
||
|
||
/* 2: iterate through workspaces and re-assign them, fixing the coordinates
|
||
* of floating containers as we go */
|
||
Con *current;
|
||
Con *old_content = output_get_content(con);
|
||
while (!TAILQ_EMPTY(&(old_content->nodes_head))) {
|
||
current = TAILQ_FIRST(&(old_content->nodes_head));
|
||
if (current != next && TAILQ_EMPTY(&(current->focus_head))) {
|
||
/* the workspace is empty and not focused, get rid of it */
|
||
DLOG("Getting rid of current = %p / %s (empty, unfocused)\n", current, current->name);
|
||
tree_close_internal(current, DONT_KILL_WINDOW, false);
|
||
continue;
|
||
}
|
||
DLOG("Detaching current = %p / %s\n", current, current->name);
|
||
con_detach(current);
|
||
DLOG("Re-attaching current = %p / %s\n", current, current->name);
|
||
con_attach(current, first_content, false);
|
||
DLOG("Fixing the coordinates of floating containers\n");
|
||
Con *floating_con;
|
||
TAILQ_FOREACH (floating_con, &(current->floating_head), floating_windows) {
|
||
floating_fix_coordinates(floating_con, &(con->rect), &(first->rect));
|
||
}
|
||
}
|
||
|
||
/* Restore focus after con_detach / con_attach. next can be NULL, see #3523. */
|
||
if (next) {
|
||
DLOG("now focusing next = %p\n", next);
|
||
con_focus(next);
|
||
workspace_show(con_get_workspace(next));
|
||
}
|
||
|
||
/* 3: move the dock clients to the first output */
|
||
Con *child;
|
||
TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
|
||
if (child->type != CT_DOCKAREA) {
|
||
continue;
|
||
}
|
||
DLOG("Handling dock con %p\n", child);
|
||
Con *dock;
|
||
while (!TAILQ_EMPTY(&(child->nodes_head))) {
|
||
dock = TAILQ_FIRST(&(child->nodes_head));
|
||
Con *nc;
|
||
Match *match;
|
||
nc = con_for_window(first, dock->window, &match);
|
||
DLOG("Moving dock client %p to nc %p\n", dock, nc);
|
||
con_detach(dock);
|
||
DLOG("Re-attaching\n");
|
||
con_attach(dock, nc, false);
|
||
DLOG("Done\n");
|
||
}
|
||
}
|
||
|
||
DLOG("Destroying disappearing con %p\n", con);
|
||
tree_close_internal(con, DONT_KILL_WINDOW, true);
|
||
}
|
||
|
||
/*
|
||
* (Re-)queries the outputs via RandR and stores them in the list of outputs.
|
||
*
|
||
* If no outputs are found use the root window.
|
||
*
|
||
*/
|
||
void randr_query_outputs(void) {
|
||
Output *output, *other;
|
||
|
||
if (!randr_query_outputs_15()) {
|
||
randr_query_outputs_14();
|
||
}
|
||
|
||
/* If there's no randr output, enable the output covering the root window. */
|
||
if (any_randr_output_active()) {
|
||
DLOG("Active RandR output found. Disabling root output.\n");
|
||
if (root_output && root_output->active) {
|
||
root_output->to_be_disabled = true;
|
||
}
|
||
} else {
|
||
DLOG("No active RandR output found. Enabling root output.\n");
|
||
root_output->active = true;
|
||
}
|
||
|
||
/* Check for clones, disable the clones and reduce the mode to the
|
||
* lowest common mode */
|
||
TAILQ_FOREACH (output, &outputs, outputs) {
|
||
if (!output->active || output->to_be_disabled)
|
||
continue;
|
||
DLOG("output %p / %s, position (%d, %d), checking for clones\n",
|
||
output, output_primary_name(output), output->rect.x, output->rect.y);
|
||
|
||
for (other = output;
|
||
other != TAILQ_END(&outputs);
|
||
other = TAILQ_NEXT(other, outputs)) {
|
||
if (other == output || !other->active || other->to_be_disabled)
|
||
continue;
|
||
|
||
if (other->rect.x != output->rect.x ||
|
||
other->rect.y != output->rect.y)
|
||
continue;
|
||
|
||
DLOG("output %p has the same position, its mode = %d x %d\n",
|
||
other, other->rect.width, other->rect.height);
|
||
uint32_t width = min(other->rect.width, output->rect.width);
|
||
uint32_t height = min(other->rect.height, output->rect.height);
|
||
|
||
if (update_if_necessary(&(output->rect.width), width) |
|
||
update_if_necessary(&(output->rect.height), height))
|
||
output->changed = true;
|
||
|
||
update_if_necessary(&(other->rect.width), width);
|
||
update_if_necessary(&(other->rect.height), height);
|
||
|
||
DLOG("disabling output %p (%s)\n", other, output_primary_name(other));
|
||
other->to_be_disabled = true;
|
||
|
||
DLOG("new output mode %d x %d, other mode %d x %d\n",
|
||
output->rect.width, output->rect.height,
|
||
other->rect.width, other->rect.height);
|
||
}
|
||
}
|
||
|
||
/* Ensure that all outputs which are active also have a con. This is
|
||
* necessary because in the next step, a clone might get disabled. Example:
|
||
* LVDS1 active, VGA1 gets activated as a clone of LVDS1 (has no con).
|
||
* LVDS1 gets disabled. */
|
||
TAILQ_FOREACH (output, &outputs, outputs) {
|
||
if (output->active && output->con == NULL) {
|
||
DLOG("Need to initialize a Con for output %s\n", output_primary_name(output));
|
||
output_init_con(output);
|
||
output->changed = false;
|
||
}
|
||
}
|
||
|
||
/* Ensure that all containers with type CT_OUTPUT have a valid
|
||
* corresponding entry in outputs. This can happen in situations related to
|
||
* those mentioned #3767 e.g. when a CT_OUTPUT is created from an in-place
|
||
* restart's layout but the output is disabled by a randr query happening
|
||
* at the same time. */
|
||
Con *con;
|
||
for (con = TAILQ_FIRST(&(croot->nodes_head)); con;) {
|
||
Con *next = TAILQ_NEXT(con, nodes);
|
||
if (!con_is_internal(con) && get_output_by_name(con->name, true) == NULL) {
|
||
DLOG("No output %s found, moving its old content to first output\n", con->name);
|
||
move_content(con);
|
||
}
|
||
con = next;
|
||
}
|
||
|
||
/* Handle outputs which have a new mode or are disabled now (either
|
||
* because the user disabled them or because they are clones) */
|
||
TAILQ_FOREACH (output, &outputs, outputs) {
|
||
if (output->to_be_disabled) {
|
||
randr_disable_output(output);
|
||
}
|
||
|
||
if (output->changed) {
|
||
output_change_mode(conn, output);
|
||
output->changed = false;
|
||
}
|
||
}
|
||
|
||
/* Just go through each active output and assign one workspace */
|
||
TAILQ_FOREACH (output, &outputs, outputs) {
|
||
if (!output->active)
|
||
continue;
|
||
Con *content = output_get_content(output->con);
|
||
if (!TAILQ_EMPTY(&(content->nodes_head)))
|
||
continue;
|
||
DLOG("Should add ws for output %s\n", output_primary_name(output));
|
||
init_ws_for_output(output);
|
||
}
|
||
|
||
/* Focus the primary screen, if possible */
|
||
TAILQ_FOREACH (output, &outputs, outputs) {
|
||
if (!output->primary || !output->con)
|
||
continue;
|
||
|
||
DLOG("Focusing primary output %s\n", output_primary_name(output));
|
||
Con *content = output_get_content(output->con);
|
||
Con *ws = TAILQ_FIRST(&(content)->focus_head);
|
||
workspace_show(ws);
|
||
}
|
||
|
||
/* render_layout flushes */
|
||
ewmh_update_desktop_properties();
|
||
tree_render();
|
||
|
||
FREE(primary);
|
||
}
|
||
|
||
/*
|
||
* Disables the output and moves its content.
|
||
*
|
||
*/
|
||
void randr_disable_output(Output *output) {
|
||
assert(output->to_be_disabled);
|
||
|
||
output->active = false;
|
||
DLOG("Output %s disabled, re-assigning workspaces/docks\n", output_primary_name(output));
|
||
|
||
if (output->con != NULL) {
|
||
/* clear the pointer before move_content calls tree_close_internal in which the memory is freed */
|
||
Con *con = output->con;
|
||
output->con = NULL;
|
||
move_content(con);
|
||
}
|
||
|
||
output->to_be_disabled = false;
|
||
output->changed = false;
|
||
}
|
||
|
||
static void fallback_to_root_output(void) {
|
||
root_output->active = true;
|
||
output_init_con(root_output);
|
||
init_ws_for_output(root_output);
|
||
}
|
||
|
||
/*
|
||
* We have just established a connection to the X server and need the initial
|
||
* XRandR information to setup workspaces for each screen.
|
||
*
|
||
*/
|
||
void randr_init(int *event_base, const bool disable_randr15) {
|
||
const xcb_query_extension_reply_t *extreply;
|
||
|
||
root_output = create_root_output(conn);
|
||
TAILQ_INSERT_TAIL(&outputs, root_output, outputs);
|
||
|
||
extreply = xcb_get_extension_data(conn, &xcb_randr_id);
|
||
if (!extreply->present) {
|
||
DLOG("RandR is not present, activating root output.\n");
|
||
fallback_to_root_output();
|
||
return;
|
||
}
|
||
|
||
xcb_generic_error_t *err;
|
||
xcb_randr_query_version_reply_t *randr_version =
|
||
xcb_randr_query_version_reply(
|
||
conn, xcb_randr_query_version(conn, XCB_RANDR_MAJOR_VERSION, XCB_RANDR_MINOR_VERSION), &err);
|
||
if (err != NULL) {
|
||
ELOG("Could not query RandR version: X11 error code %d\n", err->error_code);
|
||
free(err);
|
||
fallback_to_root_output();
|
||
return;
|
||
}
|
||
|
||
has_randr_1_5 = (randr_version->major_version >= 1) &&
|
||
(randr_version->minor_version >= 5) &&
|
||
!disable_randr15;
|
||
|
||
free(randr_version);
|
||
|
||
randr_query_outputs();
|
||
|
||
if (event_base != NULL)
|
||
*event_base = extreply->first_event;
|
||
|
||
xcb_randr_select_input(conn, root,
|
||
XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE |
|
||
XCB_RANDR_NOTIFY_MASK_OUTPUT_CHANGE |
|
||
XCB_RANDR_NOTIFY_MASK_CRTC_CHANGE |
|
||
XCB_RANDR_NOTIFY_MASK_OUTPUT_PROPERTY);
|
||
|
||
xcb_flush(conn);
|
||
}
|