1090 lines
40 KiB
C
1090 lines
40 KiB
C
#undef I3__FILE__
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#define I3__FILE__ "x.c"
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/*
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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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* © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* x.c: Interface to X11, transfers our in-memory state to X11 (see also
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* render.c). Basically a big state machine.
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*
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*/
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#include "all.h"
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/* Stores the X11 window ID of the currently focused window */
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xcb_window_t focused_id = XCB_NONE;
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/* The bottom-to-top window stack of all windows which are managed by i3.
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* Used for x_get_window_stack(). */
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static xcb_window_t *btt_stack;
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static int btt_stack_num;
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/* Stores coordinates to warp mouse pointer to if set */
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static Rect *warp_to;
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/*
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* Describes the X11 state we may modify (map state, position, window stack).
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* There is one entry per container. The state represents the current situation
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* as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
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* which represents the order that will be pushed to X11, while old_state_head
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* represents the current order). It will be updated in x_push_changes().
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*
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*/
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typedef struct con_state {
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xcb_window_t id;
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bool mapped;
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bool unmap_now;
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bool child_mapped;
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/** The con for which this state is. */
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Con *con;
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/* For reparenting, we have a flag (need_reparent) and the X ID of the old
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* frame this window was in. The latter is necessary because we need to
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* ignore UnmapNotify events (by changing the window event mask). */
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bool need_reparent;
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xcb_window_t old_frame;
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Rect rect;
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Rect window_rect;
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bool initial;
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char *name;
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CIRCLEQ_ENTRY(con_state) state;
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CIRCLEQ_ENTRY(con_state) old_state;
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} con_state;
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CIRCLEQ_HEAD(state_head, con_state) state_head =
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CIRCLEQ_HEAD_INITIALIZER(state_head);
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CIRCLEQ_HEAD(old_state_head, con_state) old_state_head =
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CIRCLEQ_HEAD_INITIALIZER(old_state_head);
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/*
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* Returns the container state for the given frame. This function always
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* returns a container state (otherwise, there is a bug in the code and the
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* container state of a container for which x_con_init() was not called was
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* requested).
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*
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*/
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static con_state *state_for_frame(xcb_window_t window) {
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con_state *state;
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CIRCLEQ_FOREACH(state, &state_head, state)
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if (state->id == window)
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return state;
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/* TODO: better error handling? */
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ELOG("No state found\n");
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assert(false);
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return NULL;
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}
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/*
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* Initializes the X11 part for the given container. Called exactly once for
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* every container from con_new().
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*
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*/
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void x_con_init(Con *con, uint16_t depth) {
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/* TODO: maybe create the window when rendering first? we could then even
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* get the initial geometry right */
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uint32_t mask = 0;
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uint32_t values[5];
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xcb_visualid_t visual = XCB_COPY_FROM_PARENT;
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xcb_colormap_t win_colormap = XCB_NONE;
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if (depth != root_depth && depth != XCB_COPY_FROM_PARENT) {
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/* For custom visuals, we need to create a colormap before creating
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* this window. It will be freed directly after creating the window. */
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visual = get_visualid_by_depth(depth);
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win_colormap = xcb_generate_id(conn);
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xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
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/* We explicitly set a background color and border color (even though we
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* don’t even have a border) because the X11 server requires us to when
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* using 32 bit color depths, see
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* http://stackoverflow.com/questions/3645632 */
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mask |= XCB_CW_BACK_PIXEL;
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values[0] = root_screen->black_pixel;
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mask |= XCB_CW_BORDER_PIXEL;
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values[1] = root_screen->black_pixel;
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/* our own frames should not be managed */
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mask |= XCB_CW_OVERRIDE_REDIRECT;
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values[2] = 1;
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/* see include/xcb.h for the FRAME_EVENT_MASK */
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mask |= XCB_CW_EVENT_MASK;
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values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
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mask |= XCB_CW_COLORMAP;
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values[4] = win_colormap;
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} else {
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/* our own frames should not be managed */
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mask = XCB_CW_OVERRIDE_REDIRECT;
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values[0] = 1;
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/* see include/xcb.h for the FRAME_EVENT_MASK */
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mask |= XCB_CW_EVENT_MASK;
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values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
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mask |= XCB_CW_COLORMAP;
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values[2] = colormap;
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}
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Rect dims = { -15, -15, 10, 10 };
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con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
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if (win_colormap != XCB_NONE)
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xcb_free_colormap(conn, win_colormap);
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struct con_state *state = scalloc(sizeof(struct con_state));
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state->id = con->frame;
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state->mapped = false;
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state->initial = true;
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CIRCLEQ_INSERT_HEAD(&state_head, state, state);
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CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
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DLOG("adding new state for window id 0x%08x\n", state->id);
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}
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/*
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* Re-initializes the associated X window state for this container. You have
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* to call this when you assign a client to an empty container to ensure that
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* its state gets updated correctly.
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*
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*/
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void x_reinit(Con *con) {
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struct con_state *state;
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if ((state = state_for_frame(con->frame)) == NULL) {
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ELOG("window state not found\n");
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return;
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}
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DLOG("resetting state %p to initial\n", state);
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state->initial = true;
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state->child_mapped = false;
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state->con = con;
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memset(&(state->window_rect), 0, sizeof(Rect));
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}
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/*
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* Reparents the child window of the given container (necessary for sticky
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* containers). The reparenting happens in the next call of x_push_changes().
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*
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*/
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void x_reparent_child(Con *con, Con *old) {
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struct con_state *state;
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if ((state = state_for_frame(con->frame)) == NULL) {
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ELOG("window state for con not found\n");
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return;
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}
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state->need_reparent = true;
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state->old_frame = old->frame;
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}
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/*
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* Moves a child window from Container src to Container dest.
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*
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*/
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void x_move_win(Con *src, Con *dest) {
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struct con_state *state_src, *state_dest;
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if ((state_src = state_for_frame(src->frame)) == NULL) {
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ELOG("window state for src not found\n");
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return;
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}
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if ((state_dest = state_for_frame(dest->frame)) == NULL) {
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ELOG("window state for dest not found\n");
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return;
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}
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state_dest->con = state_src->con;
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state_src->con = NULL;
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Rect zero = { 0, 0, 0, 0 };
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if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
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memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
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DLOG("COPYING RECT\n");
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}
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}
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/*
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* Kills the window decoration associated with the given container.
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*
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*/
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void x_con_kill(Con *con) {
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con_state *state;
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xcb_destroy_window(conn, con->frame);
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xcb_free_pixmap(conn, con->pixmap);
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xcb_free_gc(conn, con->pm_gc);
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state = state_for_frame(con->frame);
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CIRCLEQ_REMOVE(&state_head, state, state);
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CIRCLEQ_REMOVE(&old_state_head, state, old_state);
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FREE(state->name);
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free(state);
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/* Invalidate focused_id to correctly focus new windows with the same ID */
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focused_id = XCB_NONE;
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}
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/*
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* Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
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*
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*/
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bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
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xcb_get_property_cookie_t cookie;
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xcb_icccm_get_wm_protocols_reply_t protocols;
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bool result = false;
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cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
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if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
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return false;
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/* Check if the client’s protocols have the requested atom set */
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for (uint32_t i = 0; i < protocols.atoms_len; i++)
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if (protocols.atoms[i] == atom)
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result = true;
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xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
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return result;
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}
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/*
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* Kills the given X11 window using WM_DELETE_WINDOW (if supported).
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*
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*/
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void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
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/* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
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if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
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if (kill_window == KILL_WINDOW) {
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LOG("Killing specific window 0x%08x\n", window);
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xcb_destroy_window(conn, window);
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} else {
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LOG("Killing the X11 client which owns window 0x%08x\n", window);
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xcb_kill_client(conn, window);
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}
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return;
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}
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/* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
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* In order to properly initialize these bytes, we allocate 32 bytes even
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* though we only need less for an xcb_configure_notify_event_t */
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void *event = scalloc(32);
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xcb_client_message_event_t *ev = event;
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ev->response_type = XCB_CLIENT_MESSAGE;
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ev->window = window;
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ev->type = A_WM_PROTOCOLS;
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ev->format = 32;
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ev->data.data32[0] = A_WM_DELETE_WINDOW;
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ev->data.data32[1] = XCB_CURRENT_TIME;
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LOG("Sending WM_DELETE to the client\n");
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xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
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xcb_flush(conn);
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free(event);
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}
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/*
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* Draws the decoration of the given container onto its parent.
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*
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*/
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void x_draw_decoration(Con *con) {
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Con *parent = con->parent;
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bool leaf = con_is_leaf(con);
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/* This code needs to run for:
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* • leaf containers
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* • non-leaf containers which are in a stacked/tabbed container
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*
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* It does not need to run for:
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* • direct children of outputs or dockareas
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* • floating containers (they don’t have a decoration)
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*/
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if ((!leaf &&
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parent->layout != L_STACKED &&
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parent->layout != L_TABBED) ||
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parent->type == CT_OUTPUT ||
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parent->type == CT_DOCKAREA ||
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con->type == CT_FLOATING_CON)
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return;
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/* Skip containers whose height is 0 (for example empty dockareas) */
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if (con->rect.height == 0)
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return;
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/* Skip containers whose pixmap has not yet been created (can happen when
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* decoration rendering happens recursively for a window for which
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* x_push_node() was not yet called) */
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if (leaf && con->pixmap == XCB_NONE)
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return;
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/* 1: build deco_params and compare with cache */
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struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
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/* find out which colors to use */
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if (con->urgent)
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p->color = &config.client.urgent;
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else if (con == focused || con_inside_focused(con))
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p->color = &config.client.focused;
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else if (con == TAILQ_FIRST(&(parent->focus_head)))
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p->color = &config.client.focused_inactive;
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else
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p->color = &config.client.unfocused;
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p->border_style = con_border_style(con);
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Rect *r = &(con->rect);
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Rect *w = &(con->window_rect);
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p->con_rect = (struct width_height){ r->width, r->height };
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p->con_window_rect = (struct width_height){ w->width, w->height };
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p->con_deco_rect = con->deco_rect;
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p->background = config.client.background;
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p->con_is_leaf = con_is_leaf(con);
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p->parent_orientation = con_orientation(parent);
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if (con->deco_render_params != NULL &&
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(con->window == NULL || !con->window->name_x_changed) &&
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!parent->pixmap_recreated &&
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!con->pixmap_recreated &&
|
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memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
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free(p);
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goto copy_pixmaps;
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}
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Con *next = con;
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while ((next = TAILQ_NEXT(next, nodes))) {
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FREE(next->deco_render_params);
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}
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FREE(con->deco_render_params);
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con->deco_render_params = p;
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|
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if (con->window != NULL && con->window->name_x_changed)
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con->window->name_x_changed = false;
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parent->pixmap_recreated = false;
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con->pixmap_recreated = false;
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/* 2: draw the client.background, but only for the parts around the client_rect */
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if (con->window != NULL) {
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xcb_rectangle_t background[] = {
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/* top area */
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{ 0, 0, r->width, w->y },
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/* bottom area */
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{ 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
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/* left area */
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{ 0, 0, w->x, r->height },
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/* right area */
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{ w->x + w->width, 0, r->width - (w->x + w->width), r->height }
|
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};
|
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#if 0
|
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for (int i = 0; i < 4; i++)
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DLOG("rect is (%d, %d) with %d x %d\n",
|
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background[i].x,
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background[i].y,
|
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background[i].width,
|
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background[i].height
|
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);
|
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#endif
|
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|
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xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
|
||
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
|
||
}
|
||
|
||
/* 3: draw a rectangle in border color around the client */
|
||
if (p->border_style != BS_NONE && p->con_is_leaf) {
|
||
/* We might hide some borders adjacent to the screen-edge */
|
||
adjacent_t borders_to_hide = ADJ_NONE;
|
||
borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
|
||
|
||
Rect br = con_border_style_rect(con);
|
||
#if 0
|
||
DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
|
||
DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
|
||
DLOG("window_rect spans (%d, %d) with %d x %d\n", con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
|
||
#endif
|
||
|
||
/* These rectangles represents the border around the child window
|
||
* (left, bottom and right part). We don’t just fill the whole
|
||
* rectangle because some childs are not freely resizable and we want
|
||
* their background color to "shine through". */
|
||
xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
|
||
if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
|
||
xcb_rectangle_t leftline = { 0, 0, br.x, r->height };
|
||
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
|
||
}
|
||
if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
|
||
xcb_rectangle_t rightline = { r->width + br.width + br.x, 0, r->width, r->height };
|
||
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
|
||
}
|
||
if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
|
||
xcb_rectangle_t bottomline = { 0, r->height + br.height + br.y, r->width, r->height };
|
||
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
|
||
}
|
||
/* 1pixel border needs an additional line at the top */
|
||
if (p->border_style == BS_PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
|
||
xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
|
||
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
|
||
}
|
||
|
||
/* Highlight the side of the border at which the next window will be
|
||
* opened if we are rendering a single window within a split container
|
||
* (which is undistinguishable from a single window outside a split
|
||
* container otherwise. */
|
||
if (TAILQ_NEXT(con, nodes) == NULL &&
|
||
TAILQ_PREV(con, nodes_head, nodes) == NULL &&
|
||
con->parent->type != CT_FLOATING_CON) {
|
||
xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator });
|
||
if (p->parent_orientation == HORIZ)
|
||
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
|
||
{ r->width + br.width + br.x, br.y, r->width, r->height + br.height } });
|
||
else
|
||
xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
|
||
{ br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } });
|
||
}
|
||
|
||
}
|
||
|
||
/* if this is a borderless/1pixel window, we don’t need to render the
|
||
* decoration. */
|
||
if (p->border_style != BS_NORMAL)
|
||
goto copy_pixmaps;
|
||
|
||
/* 4: paint the bar */
|
||
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
|
||
xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
|
||
xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
|
||
|
||
/* 5: draw two unconnected lines in border color */
|
||
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
|
||
Rect *dr = &(con->deco_rect);
|
||
int deco_diff_l = 2;
|
||
int deco_diff_r = 2;
|
||
if (parent->layout == L_TABBED) {
|
||
if (TAILQ_PREV(con, nodes_head, nodes) != NULL)
|
||
deco_diff_l = 0;
|
||
if (TAILQ_NEXT(con, nodes) != NULL)
|
||
deco_diff_r = 0;
|
||
}
|
||
xcb_segment_t segments[] = {
|
||
{ dr->x, dr->y,
|
||
dr->x + dr->width - 1, dr->y },
|
||
|
||
{ dr->x + deco_diff_l, dr->y + dr->height - 1,
|
||
dr->x - deco_diff_r + dr->width - 1, dr->y + dr->height - 1 }
|
||
};
|
||
xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
|
||
|
||
/* 6: draw the title */
|
||
set_font_colors(parent->pm_gc, p->color->text, p->color->background);
|
||
int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
|
||
|
||
struct Window *win = con->window;
|
||
if (win == NULL) {
|
||
/* we have a split container which gets a representation
|
||
* of its children as title
|
||
*/
|
||
char *title;
|
||
char *tree = con_get_tree_representation(con);
|
||
sasprintf(&title, "i3: %s", tree);
|
||
free(tree);
|
||
|
||
draw_text_ascii(title,
|
||
parent->pixmap, parent->pm_gc,
|
||
con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
|
||
con->deco_rect.width - 2);
|
||
free(title);
|
||
|
||
goto after_title;
|
||
}
|
||
|
||
if (win->name == NULL)
|
||
goto copy_pixmaps;
|
||
|
||
int indent_level = 0,
|
||
indent_mult = 0;
|
||
Con *il_parent = parent;
|
||
if (il_parent->layout != L_STACKED) {
|
||
while (1) {
|
||
//DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
|
||
if (il_parent->layout == L_STACKED)
|
||
indent_level++;
|
||
if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
|
||
break;
|
||
il_parent = il_parent->parent;
|
||
indent_mult++;
|
||
}
|
||
}
|
||
//DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
|
||
int indent_px = (indent_level * 5) * indent_mult;
|
||
|
||
draw_text(win->name,
|
||
parent->pixmap, parent->pm_gc,
|
||
con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y,
|
||
con->deco_rect.width - 2 - indent_px);
|
||
|
||
after_title:
|
||
/* Since we don’t clip the text at all, it might in some cases be painted
|
||
* on the border pixels on the right side of a window. Therefore, we draw
|
||
* the right border again after rendering the text (and the unconnected
|
||
* lines in border color). */
|
||
|
||
/* Draw a separator line after every tab (except the last one), so that
|
||
* tabs can be easily distinguished. */
|
||
if (parent->layout == L_TABBED && TAILQ_NEXT(con, nodes) != NULL) {
|
||
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
|
||
} else {
|
||
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
|
||
}
|
||
xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 4,
|
||
(xcb_point_t[]){
|
||
{ dr->x + dr->width - 1, dr->y },
|
||
{ dr->x + dr->width - 1, dr->y + dr->height },
|
||
{ dr->x + dr->width - 2, dr->y },
|
||
{ dr->x + dr->width - 2, dr->y + dr->height }
|
||
});
|
||
|
||
xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
|
||
xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
|
||
|
||
copy_pixmaps:
|
||
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
|
||
}
|
||
|
||
/*
|
||
* Recursively calls x_draw_decoration. This cannot be done in x_push_node
|
||
* because x_push_node uses focus order to recurse (see the comment above)
|
||
* while drawing the decoration needs to happen in the actual order.
|
||
*
|
||
*/
|
||
void x_deco_recurse(Con *con) {
|
||
Con *current;
|
||
bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
|
||
TAILQ_EMPTY(&(con->floating_head));
|
||
con_state *state = state_for_frame(con->frame);
|
||
|
||
if (!leaf) {
|
||
TAILQ_FOREACH(current, &(con->nodes_head), nodes)
|
||
x_deco_recurse(current);
|
||
|
||
TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
|
||
x_deco_recurse(current);
|
||
|
||
if (state->mapped)
|
||
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
|
||
}
|
||
|
||
if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
|
||
(!leaf || con->mapped))
|
||
x_draw_decoration(con);
|
||
}
|
||
|
||
/*
|
||
* This function pushes the properties of each node of the layout tree to
|
||
* X11 if they have changed (like the map state, position of the window, …).
|
||
* It recursively traverses all children of the given node.
|
||
*
|
||
*/
|
||
void x_push_node(Con *con) {
|
||
Con *current;
|
||
con_state *state;
|
||
Rect rect = con->rect;
|
||
|
||
//DLOG("Pushing changes for node %p / %s\n", con, con->name);
|
||
state = state_for_frame(con->frame);
|
||
|
||
if (state->name != NULL) {
|
||
DLOG("pushing name %s for con %p\n", state->name, con);
|
||
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
|
||
XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
|
||
FREE(state->name);
|
||
}
|
||
|
||
if (con->window == NULL) {
|
||
/* Calculate the height of all window decorations which will be drawn on to
|
||
* this frame. */
|
||
uint32_t max_y = 0, max_height = 0;
|
||
TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
|
||
Rect *dr = &(current->deco_rect);
|
||
if (dr->y >= max_y && dr->height >= max_height) {
|
||
max_y = dr->y;
|
||
max_height = dr->height;
|
||
}
|
||
}
|
||
rect.height = max_y + max_height;
|
||
if (rect.height == 0)
|
||
con->mapped = false;
|
||
}
|
||
|
||
/* reparent the child window (when the window was moved due to a sticky
|
||
* container) */
|
||
if (state->need_reparent && con->window != NULL) {
|
||
DLOG("Reparenting child window\n");
|
||
|
||
/* Temporarily set the event masks to XCB_NONE so that we won’t get
|
||
* UnmapNotify events (otherwise the handler would close the container).
|
||
* These events are generated automatically when reparenting. */
|
||
uint32_t values[] = { XCB_NONE };
|
||
xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
|
||
xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
|
||
|
||
xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
|
||
|
||
values[0] = FRAME_EVENT_MASK;
|
||
xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
|
||
values[0] = CHILD_EVENT_MASK;
|
||
xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
|
||
|
||
state->old_frame = XCB_NONE;
|
||
state->need_reparent = false;
|
||
|
||
con->ignore_unmap++;
|
||
DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
|
||
con, con->window->id, con->ignore_unmap);
|
||
}
|
||
|
||
bool fake_notify = false;
|
||
/* Set new position if rect changed (and if height > 0) */
|
||
if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
|
||
rect.height > 0) {
|
||
/* We first create the new pixmap, then render to it, set it as the
|
||
* background and only afterwards change the window size. This reduces
|
||
* flickering. */
|
||
|
||
/* As the pixmap only depends on the size and not on the position, it
|
||
* is enough to check if width/height have changed. Also, we don’t
|
||
* create a pixmap at all when the window is actually not visible
|
||
* (height == 0). */
|
||
if ((state->rect.width != rect.width ||
|
||
state->rect.height != rect.height)) {
|
||
if (con->pixmap == 0) {
|
||
con->pixmap = xcb_generate_id(conn);
|
||
con->pm_gc = xcb_generate_id(conn);
|
||
} else {
|
||
xcb_free_pixmap(conn, con->pixmap);
|
||
xcb_free_gc(conn, con->pm_gc);
|
||
}
|
||
|
||
uint16_t win_depth = root_depth;
|
||
if (con->window)
|
||
win_depth = con->window->depth;
|
||
|
||
xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
|
||
|
||
/* For the graphics context, we disable GraphicsExposure events.
|
||
* Those will be sent when a CopyArea request cannot be fulfilled
|
||
* properly due to parts of the source being unmapped or otherwise
|
||
* unavailable. Since we always copy from pixmaps to windows, this
|
||
* is not a concern for us. */
|
||
uint32_t values[] = { 0 };
|
||
xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
|
||
|
||
con->pixmap_recreated = true;
|
||
|
||
/* Don’t render the decoration for windows inside a stack which are
|
||
* not visible right now */
|
||
if (!con->parent ||
|
||
con->parent->layout != L_STACKED ||
|
||
TAILQ_FIRST(&(con->parent->focus_head)) == con)
|
||
/* Render the decoration now to make the correct decoration visible
|
||
* from the very first moment. Later calls will be cached, so this
|
||
* doesn’t hurt performance. */
|
||
x_deco_recurse(con);
|
||
}
|
||
|
||
DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
|
||
/* flush to ensure that the following commands are sent in a single
|
||
* buffer and will be processed directly afterwards (the contents of a
|
||
* window get lost when resizing it, therefore we want to provide it as
|
||
* fast as possible) */
|
||
xcb_flush(conn);
|
||
xcb_set_window_rect(conn, con->frame, rect);
|
||
if (con->pixmap != XCB_NONE)
|
||
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
|
||
xcb_flush(conn);
|
||
|
||
memcpy(&(state->rect), &rect, sizeof(Rect));
|
||
fake_notify = true;
|
||
}
|
||
|
||
/* dito, but for child windows */
|
||
if (con->window != NULL &&
|
||
memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
|
||
DLOG("setting window rect (%d, %d, %d, %d)\n",
|
||
con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
|
||
xcb_set_window_rect(conn, con->window->id, con->window_rect);
|
||
memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
|
||
fake_notify = true;
|
||
}
|
||
|
||
/* Map if map state changed, also ensure that the child window
|
||
* is changed if we are mapped *and* in initial state (meaning the
|
||
* container was empty before, but now got a child). Unmaps are handled in
|
||
* x_push_node_unmaps(). */
|
||
if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
|
||
con->mapped) {
|
||
xcb_void_cookie_t cookie;
|
||
|
||
if (con->window != NULL) {
|
||
/* Set WM_STATE_NORMAL because GTK applications don’t want to
|
||
* drag & drop if we don’t. Also, xprop(1) needs it. */
|
||
long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
|
||
A_WM_STATE, A_WM_STATE, 32, 2, data);
|
||
}
|
||
|
||
uint32_t values[1];
|
||
if (!state->child_mapped && con->window != NULL) {
|
||
cookie = xcb_map_window(conn, con->window->id);
|
||
|
||
/* We are interested in EnterNotifys as soon as the window is
|
||
* mapped */
|
||
values[0] = CHILD_EVENT_MASK;
|
||
xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
|
||
DLOG("mapping child window (serial %d)\n", cookie.sequence);
|
||
state->child_mapped = true;
|
||
}
|
||
|
||
cookie = xcb_map_window(conn, con->frame);
|
||
|
||
values[0] = FRAME_EVENT_MASK;
|
||
xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
|
||
|
||
/* copy the pixmap contents to the frame window immediately after mapping */
|
||
if (con->pixmap != XCB_NONE)
|
||
xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
|
||
xcb_flush(conn);
|
||
|
||
DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
|
||
state->mapped = con->mapped;
|
||
}
|
||
|
||
state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
|
||
|
||
if (fake_notify) {
|
||
DLOG("Sending fake configure notify\n");
|
||
fake_absolute_configure_notify(con);
|
||
}
|
||
|
||
/* Handle all children and floating windows of this node. We recurse
|
||
* in focus order to display the focused client in a stack first when
|
||
* switching workspaces (reduces flickering). */
|
||
TAILQ_FOREACH(current, &(con->focus_head), focused)
|
||
x_push_node(current);
|
||
}
|
||
|
||
/*
|
||
* Same idea as in x_push_node(), but this function only unmaps windows. It is
|
||
* necessary to split this up to handle new fullscreen clients properly: The
|
||
* new window needs to be mapped and focus needs to be set *before* the
|
||
* underlying windows are unmapped. Otherwise, focus will revert to the
|
||
* PointerRoot and will then be set to the new window, generating unnecessary
|
||
* FocusIn/FocusOut events.
|
||
*
|
||
*/
|
||
static void x_push_node_unmaps(Con *con) {
|
||
Con *current;
|
||
con_state *state;
|
||
|
||
//DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
|
||
state = state_for_frame(con->frame);
|
||
|
||
/* map/unmap if map state changed, also ensure that the child window
|
||
* is changed if we are mapped *and* in initial state (meaning the
|
||
* container was empty before, but now got a child) */
|
||
if (state->unmap_now) {
|
||
xcb_void_cookie_t cookie;
|
||
if (con->window != NULL) {
|
||
/* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
|
||
long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
|
||
A_WM_STATE, A_WM_STATE, 32, 2, data);
|
||
}
|
||
|
||
cookie = xcb_unmap_window(conn, con->frame);
|
||
DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
|
||
/* we need to increase ignore_unmap for this container (if it
|
||
* contains a window) and for every window "under" this one which
|
||
* contains a window */
|
||
if (con->window != NULL) {
|
||
con->ignore_unmap++;
|
||
DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
|
||
}
|
||
state->mapped = con->mapped;
|
||
}
|
||
|
||
/* handle all children and floating windows of this node */
|
||
TAILQ_FOREACH(current, &(con->nodes_head), nodes)
|
||
x_push_node_unmaps(current);
|
||
|
||
TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
|
||
x_push_node_unmaps(current);
|
||
}
|
||
|
||
/*
|
||
* Pushes all changes (state of each node, see x_push_node() and the window
|
||
* stack) to X11.
|
||
*
|
||
* NOTE: We need to push the stack first so that the windows have the correct
|
||
* stacking order. This is relevant for workspace switching where we map the
|
||
* windows because mapping may generate EnterNotify events. When they are
|
||
* generated in the wrong order, this will cause focus problems when switching
|
||
* workspaces.
|
||
*
|
||
*/
|
||
void x_push_changes(Con *con) {
|
||
con_state *state;
|
||
xcb_query_pointer_cookie_t pointercookie;
|
||
|
||
/* If we need to warp later, we request the pointer position as soon as possible */
|
||
if (warp_to) {
|
||
pointercookie = xcb_query_pointer(conn, root);
|
||
}
|
||
|
||
DLOG("-- PUSHING WINDOW STACK --\n");
|
||
//DLOG("Disabling EnterNotify\n");
|
||
uint32_t values[1] = { XCB_NONE };
|
||
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
|
||
if (state->mapped)
|
||
xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
|
||
}
|
||
//DLOG("Done, EnterNotify disabled\n");
|
||
bool order_changed = false;
|
||
bool stacking_changed = false;
|
||
|
||
/* count first, necessary to (re)allocate memory for the bottom-to-top
|
||
* stack afterwards */
|
||
int cnt = 0;
|
||
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
|
||
if (state->con && state->con->window)
|
||
cnt++;
|
||
|
||
if (cnt != btt_stack_num) {
|
||
btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
|
||
btt_stack_num = cnt;
|
||
}
|
||
|
||
xcb_window_t *walk = btt_stack;
|
||
|
||
/* X11 correctly represents the stack if we push it from bottom to top */
|
||
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
|
||
if (state->con && state->con->window)
|
||
memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
|
||
|
||
//DLOG("stack: 0x%08x\n", state->id);
|
||
con_state *prev = CIRCLEQ_PREV(state, state);
|
||
con_state *old_prev = CIRCLEQ_PREV(state, old_state);
|
||
if (prev != old_prev)
|
||
order_changed = true;
|
||
if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
|
||
stacking_changed = true;
|
||
//DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
|
||
uint32_t mask = 0;
|
||
mask |= XCB_CONFIG_WINDOW_SIBLING;
|
||
mask |= XCB_CONFIG_WINDOW_STACK_MODE;
|
||
uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
|
||
|
||
xcb_configure_window(conn, prev->id, mask, values);
|
||
}
|
||
state->initial = false;
|
||
}
|
||
|
||
/* If we re-stacked something (or a new window appeared), we need to update
|
||
* the _NET_CLIENT_LIST_STACKING hint */
|
||
if (stacking_changed)
|
||
ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
|
||
|
||
DLOG("PUSHING CHANGES\n");
|
||
x_push_node(con);
|
||
|
||
if (warp_to) {
|
||
xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
|
||
if (!pointerreply) {
|
||
ELOG("Could not query pointer position, not warping pointer\n");
|
||
} else {
|
||
int mid_x = warp_to->x + (warp_to->width / 2);
|
||
int mid_y = warp_to->y + (warp_to->height / 2);
|
||
|
||
Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
|
||
Output *target = get_output_containing(mid_x, mid_y);
|
||
if (current != target)
|
||
xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
|
||
}
|
||
warp_to = NULL;
|
||
}
|
||
|
||
//DLOG("Re-enabling EnterNotify\n");
|
||
values[0] = FRAME_EVENT_MASK;
|
||
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
|
||
if (state->mapped)
|
||
xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
|
||
}
|
||
//DLOG("Done, EnterNotify re-enabled\n");
|
||
|
||
x_deco_recurse(con);
|
||
|
||
xcb_window_t to_focus = focused->frame;
|
||
if (focused->window != NULL)
|
||
to_focus = focused->window->id;
|
||
|
||
if (focused_id != to_focus) {
|
||
if (!focused->mapped) {
|
||
DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
|
||
/* Invalidate focused_id to correctly focus new windows with the same ID */
|
||
focused_id = XCB_NONE;
|
||
} else {
|
||
bool set_focus = true;
|
||
if (focused->window != NULL &&
|
||
focused->window->needs_take_focus) {
|
||
DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
|
||
to_focus, focused, focused->name);
|
||
send_take_focus(to_focus);
|
||
set_focus = !focused->window->doesnt_accept_focus;
|
||
DLOG("set_focus = %d\n", set_focus);
|
||
}
|
||
|
||
if (set_focus) {
|
||
DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
|
||
/* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
|
||
* no focus change events for our own focus changes. We only want
|
||
* these generated by the clients. */
|
||
if (focused->window != NULL) {
|
||
values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
|
||
xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
|
||
}
|
||
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
|
||
if (focused->window != NULL) {
|
||
values[0] = CHILD_EVENT_MASK;
|
||
xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
|
||
}
|
||
|
||
ewmh_update_active_window(to_focus);
|
||
}
|
||
|
||
focused_id = to_focus;
|
||
}
|
||
}
|
||
|
||
if (focused_id == XCB_NONE) {
|
||
DLOG("Still no window focused, better set focus to the root window\n");
|
||
xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
|
||
focused_id = root;
|
||
}
|
||
|
||
xcb_flush(conn);
|
||
DLOG("ENDING CHANGES\n");
|
||
|
||
/* Disable EnterWindow events for windows which will be unmapped in
|
||
* x_push_node_unmaps() now. Unmapping windows happens when switching
|
||
* workspaces. We want to avoid getting EnterNotifies during that phase
|
||
* because they would screw up our focus. One of these cases is having a
|
||
* stack with two windows. If the first window is focused and gets
|
||
* unmapped, the second one appears under the cursor and therefore gets an
|
||
* EnterNotify event. */
|
||
values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
|
||
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
|
||
if (!state->unmap_now)
|
||
continue;
|
||
xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
|
||
}
|
||
|
||
/* Push all pending unmaps */
|
||
x_push_node_unmaps(con);
|
||
|
||
/* save the current stack as old stack */
|
||
CIRCLEQ_FOREACH(state, &state_head, state) {
|
||
CIRCLEQ_REMOVE(&old_state_head, state, old_state);
|
||
CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
|
||
}
|
||
//CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
|
||
// DLOG("old stack: 0x%08x\n", state->id);
|
||
//}
|
||
|
||
xcb_flush(conn);
|
||
}
|
||
|
||
/*
|
||
* Raises the specified container in the internal stack of X windows. The
|
||
* next call to x_push_changes() will make the change visible in X11.
|
||
*
|
||
*/
|
||
void x_raise_con(Con *con) {
|
||
con_state *state;
|
||
state = state_for_frame(con->frame);
|
||
//DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
|
||
|
||
CIRCLEQ_REMOVE(&state_head, state, state);
|
||
CIRCLEQ_INSERT_HEAD(&state_head, state, state);
|
||
}
|
||
|
||
/*
|
||
* Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
|
||
* of the given name. Used for properly tagging the windows for easily spotting
|
||
* i3 windows in xwininfo -root -all.
|
||
*
|
||
*/
|
||
void x_set_name(Con *con, const char *name) {
|
||
struct con_state *state;
|
||
|
||
if ((state = state_for_frame(con->frame)) == NULL) {
|
||
ELOG("window state not found\n");
|
||
return;
|
||
}
|
||
|
||
FREE(state->name);
|
||
state->name = sstrdup(name);
|
||
}
|
||
|
||
/*
|
||
* Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
|
||
*
|
||
*/
|
||
void x_set_i3_atoms(void) {
|
||
pid_t pid = getpid();
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
|
||
(current_socketpath == NULL ? 0 : strlen(current_socketpath)),
|
||
current_socketpath);
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
|
||
strlen(current_configpath), current_configpath);
|
||
xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
|
||
strlen(shmlogname), shmlogname);
|
||
}
|
||
|
||
/*
|
||
* Set warp_to coordinates. This will trigger on the next call to
|
||
* x_push_changes().
|
||
*
|
||
*/
|
||
void x_set_warp_to(Rect *rect)
|
||
{
|
||
warp_to = rect;
|
||
}
|
||
|
||
/*
|
||
* Applies the given mask to the event mask of every i3 window decoration X11
|
||
* window. This is useful to disable EnterNotify while resizing so that focus
|
||
* is untouched.
|
||
*
|
||
*/
|
||
void x_mask_event_mask(uint32_t mask) {
|
||
uint32_t values[] = { FRAME_EVENT_MASK & mask };
|
||
|
||
con_state *state;
|
||
CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
|
||
if (state->mapped)
|
||
xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
|
||
}
|
||
}
|