614 lines
22 KiB
C
614 lines
22 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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*
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* © 2009-2010 Michael Stapelberg and contributors
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*
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* See file LICENSE for license information.
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*
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* src/floating.c: contains all functions for handling floating clients
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*
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*/
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#include "all.h"
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extern xcb_connection_t *conn;
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void floating_enable(Con *con, bool automatic) {
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bool set_focus = (con == focused);
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if (con->parent && con->parent->type == CT_DOCKAREA) {
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LOG("Container is a dock window, not enabling floating mode.\n");
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return;
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}
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if (con_is_floating(con)) {
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LOG("Container is already in floating mode, not doing anything.\n");
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return;
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}
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/* 1: If the container is a workspace container, we need to create a new
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* split-container with the same orientation and make that one floating. We
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* cannot touch the workspace container itself because floating containers
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* are children of the workspace. */
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if (con->type == CT_WORKSPACE) {
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LOG("This is a workspace, creating new container around content\n");
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if (con_num_children(con) == 0) {
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LOG("Workspace is empty, aborting\n");
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return;
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}
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/* TODO: refactor this with src/con.c:con_set_layout */
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Con *new = con_new(NULL, NULL);
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new->parent = con;
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new->orientation = con->orientation;
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/* since the new container will be set into floating mode directly
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* afterwards, we need to copy the workspace rect. */
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memcpy(&(new->rect), &(con->rect), sizeof(Rect));
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Con *old_focused = TAILQ_FIRST(&(con->focus_head));
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if (old_focused == TAILQ_END(&(con->focus_head)))
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old_focused = NULL;
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/* 4: move the existing cons of this workspace below the new con */
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DLOG("Moving cons\n");
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Con *child;
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while (!TAILQ_EMPTY(&(con->nodes_head))) {
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child = TAILQ_FIRST(&(con->nodes_head));
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con_detach(child);
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con_attach(child, new, true);
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}
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/* 4: attach the new split container to the workspace */
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DLOG("Attaching new split to ws\n");
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con_attach(new, con, false);
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if (old_focused)
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con_focus(old_focused);
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con = new;
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set_focus = false;
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}
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/* 1: detach the container from its parent */
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/* TODO: refactor this with tree_close() */
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TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
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TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
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con_fix_percent(con->parent);
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/* 2: create a new container to render the decoration on, add
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* it as a floating window to the workspace */
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Con *nc = con_new(NULL, NULL);
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/* we need to set the parent afterwards instead of passing it as an
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* argument to con_new() because nc would be inserted into the tiling layer
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* otherwise. */
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Con *ws = con_get_workspace(con);
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nc->parent = ws;
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/* check if the parent container is empty and close it if so */
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if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) && con_num_children(con->parent) == 0) {
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DLOG("Old container empty after setting this child to floating, closing\n");
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tree_close(con->parent, DONT_KILL_WINDOW, false);
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}
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char *name;
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asprintf(&name, "[i3 con] floatingcon around %p", con);
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x_set_name(nc, name);
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free(name);
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/* find the height for the decorations */
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int deco_height = config.font.height + 5;
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DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height);
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Rect zero = { 0, 0, 0, 0 };
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nc->rect = con->geometry;
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/* If the geometry was not set (split containers), we need to determine a
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* sensible one by combining the geometry of all children */
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if (memcmp(&(nc->rect), &zero, sizeof(Rect)) == 0) {
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DLOG("Geometry not set, combining children\n");
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Con *child;
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TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
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DLOG("child geometry: %d x %d\n", child->geometry.width, child->geometry.height);
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nc->rect.width += child->geometry.width;
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nc->rect.height = max(nc->rect.height, child->geometry.height);
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}
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}
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/* Raise the width/height to at least 75x50 (minimum size for windows) */
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nc->rect.width = max(nc->rect.width, 75);
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nc->rect.height = max(nc->rect.height, 50);
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/* add pixels for the decoration */
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/* TODO: don’t add them when the user automatically puts new windows into
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* 1pixel/borderless mode */
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nc->rect.height += deco_height + 4;
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nc->rect.width += 4;
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/* Some clients (like GIMP’s color picker window) get mapped
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* to (0, 0), so we push them to a reasonable position
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* (centered over their leader) */
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if (nc->rect.x == 0 && nc->rect.y == 0) {
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Con *leader;
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if (con->window && con->window->leader != XCB_NONE &&
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(leader = con_by_window_id(con->window->leader)) != NULL) {
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DLOG("Centering above leader\n");
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nc->rect.x = leader->rect.x + (leader->rect.width / 2) - (nc->rect.width / 2);
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nc->rect.y = leader->rect.y + (leader->rect.height / 2) - (nc->rect.height / 2);
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} else {
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/* center the window on workspace as fallback */
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nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
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nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
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}
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}
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/* Sanity check: Are the coordinates on the appropriate output? If not, we
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* need to change them */
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Output *current_output = get_output_containing(nc->rect.x, nc->rect.y);
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Con *correct_output = con_get_output(ws);
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if (!current_output || current_output->con != correct_output) {
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DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n",
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nc->rect.x, nc->rect.y);
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/* Take the relative coordinates of the current output, then add them
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* to the coordinate space of the correct output */
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uint32_t rel_x = (nc->rect.x - (current_output ? current_output->con->rect.x : 0));
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uint32_t rel_y = (nc->rect.y - (current_output ? current_output->con->rect.y : 0));
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nc->rect.x = correct_output->rect.x + rel_x;
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nc->rect.y = correct_output->rect.y + rel_y;
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}
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DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
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nc->orientation = NO_ORIENTATION;
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nc->type = CT_FLOATING_CON;
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TAILQ_INSERT_TAIL(&(ws->floating_head), nc, floating_windows);
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TAILQ_INSERT_TAIL(&(ws->focus_head), nc, focused);
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/* 3: attach the child to the new parent container */
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con->parent = nc;
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con->percent = 1.0;
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con->floating = FLOATING_USER_ON;
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TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
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TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
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/* render the cons to get initial window_rect correct */
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render_con(nc, false);
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render_con(con, false);
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if (set_focus)
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con_focus(con);
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/* Check if we need to re-assign it to a different workspace because of its
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* coordinates and exit if that was done successfully. */
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if (floating_maybe_reassign_ws(nc))
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return;
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/* Sanitize coordinates: Check if they are on any output */
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if (get_output_containing(nc->rect.x, nc->rect.y) != NULL)
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return;
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ELOG("No output found at destination coordinates, centering floating window on current ws\n");
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nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
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nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
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}
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void floating_disable(Con *con, bool automatic) {
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if (!con_is_floating(con)) {
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LOG("Container isn't floating, not doing anything.\n");
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return;
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}
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Con *ws = con_get_workspace(con);
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/* 1: detach from parent container */
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TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
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TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
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/* 2: kill parent container */
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TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
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TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
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tree_close(con->parent, DONT_KILL_WINDOW, false);
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/* 3: re-attach to the parent of the currently focused con on the workspace
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* this floating con was on */
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Con *focused = con_descend_tiling_focused(ws);
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/* if there is no other container on this workspace, focused will be the
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* workspace itself */
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if (focused->type == CT_WORKSPACE)
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con->parent = focused;
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else con->parent = focused->parent;
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/* con_fix_percent will adjust the percent value */
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con->percent = 0.0;
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TAILQ_INSERT_TAIL(&(con->parent->nodes_head), con, nodes);
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TAILQ_INSERT_TAIL(&(con->parent->focus_head), con, focused);
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con->floating = FLOATING_USER_OFF;
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con_fix_percent(con->parent);
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// TODO: don’t influence focus handling when Con was not focused before.
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con_focus(con);
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}
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/*
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* Toggles floating mode for the given container.
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*
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* If the automatic flag is set to true, this was an automatic update by a change of the
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* window class from the application which can be overwritten by the user.
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*
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*/
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void toggle_floating_mode(Con *con, bool automatic) {
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/* see if the client is already floating */
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if (con_is_floating(con)) {
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LOG("already floating, re-setting to tiling\n");
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floating_disable(con, automatic);
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return;
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}
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floating_enable(con, automatic);
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}
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/*
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* Raises the given container in the list of floating containers
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*
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*/
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void floating_raise_con(Con *con) {
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DLOG("Raising floating con %p / %s\n", con, con->name);
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TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
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TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
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}
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/*
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* Checks if con’s coordinates are within its workspace and re-assigns it to
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* the actual workspace if not.
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*
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*/
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bool floating_maybe_reassign_ws(Con *con) {
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Output *output = get_output_containing(
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con->rect.x + (con->rect.width / 2),
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con->rect.y + (con->rect.height / 2));
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if (!output) {
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ELOG("No output found at destination coordinates?\n");
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return false;
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}
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if (con_get_output(con) == output->con) {
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DLOG("still the same ws\n");
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return false;
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}
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DLOG("Need to re-assign!\n");
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Con *content = output_get_content(output->con);
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Con *ws = TAILQ_FIRST(&(content->focus_head));
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DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
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con_move_to_workspace(con, ws, true);
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con_focus(con_descend_focused(con));
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return true;
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}
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DRAGGING_CB(drag_window_callback) {
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struct xcb_button_press_event_t *event = extra;
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/* Reposition the client correctly while moving */
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con->rect.x = old_rect->x + (new_x - event->root_x);
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con->rect.y = old_rect->y + (new_y - event->root_y);
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render_con(con, false);
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x_push_node(con);
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xcb_flush(conn);
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/* Check if we cross workspace boundaries while moving */
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if (!floating_maybe_reassign_ws(con))
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return;
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tree_render();
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}
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/*
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* Called when the user clicked on the titlebar of a floating window.
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* Calls the drag_pointer function with the drag_window callback
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*
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*/
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void floating_drag_window(Con *con, xcb_button_press_event_t *event) {
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DLOG("floating_drag_window\n");
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/* Push changes before dragging, so that the window gets raised now and not
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* after the user releases the mouse button */
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tree_render();
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/* Drag the window */
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drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
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tree_render();
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}
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/*
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* This is an ugly data structure which we need because there is no standard
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* way of having nested functions (only available as a gcc extension at the
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* moment, clang doesn’t support it) or blocks (only available as a clang
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* extension and only on Mac OS X systems at the moment).
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*
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*/
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struct resize_window_callback_params {
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border_t corner;
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bool proportional;
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xcb_button_press_event_t *event;
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};
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DRAGGING_CB(resize_window_callback) {
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struct resize_window_callback_params *params = extra;
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xcb_button_press_event_t *event = params->event;
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border_t corner = params->corner;
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int32_t dest_x = con->rect.x;
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int32_t dest_y = con->rect.y;
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uint32_t dest_width;
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uint32_t dest_height;
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double ratio = (double) old_rect->width / old_rect->height;
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/* First guess: We resize by exactly the amount the mouse moved,
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* taking into account in which corner the client was grabbed */
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if (corner & BORDER_LEFT)
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dest_width = old_rect->width - (new_x - event->root_x);
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else dest_width = old_rect->width + (new_x - event->root_x);
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if (corner & BORDER_TOP)
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dest_height = old_rect->height - (new_y - event->root_y);
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else dest_height = old_rect->height + (new_y - event->root_y);
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/* Obey minimum window size */
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Rect minimum = con_minimum_size(con);
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dest_width = max(dest_width, minimum.width);
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dest_height = max(dest_height, minimum.height);
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/* User wants to keep proportions, so we may have to adjust our values */
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if (params->proportional) {
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dest_width = max(dest_width, (int) (dest_height * ratio));
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dest_height = max(dest_height, (int) (dest_width / ratio));
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}
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/* If not the lower right corner is grabbed, we must also reposition
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* the client by exactly the amount we resized it */
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if (corner & BORDER_LEFT)
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dest_x = old_rect->x + (old_rect->width - dest_width);
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if (corner & BORDER_TOP)
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dest_y = old_rect->y + (old_rect->height - dest_height);
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con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height };
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/* TODO: don’t re-render the whole tree just because we change
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* coordinates of a floating window */
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tree_render();
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x_push_changes(croot);
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}
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/*
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* Called when the user clicked on a floating window while holding the
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* floating_modifier and the right mouse button.
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* Calls the drag_pointer function with the resize_window callback
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*
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*/
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void floating_resize_window(Con *con, bool proportional,
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xcb_button_press_event_t *event) {
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DLOG("floating_resize_window\n");
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/* corner saves the nearest corner to the original click. It contains
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* a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
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border_t corner = 0;
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if (event->event_x <= (con->rect.width / 2))
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corner |= BORDER_LEFT;
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else corner |= BORDER_RIGHT;
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if (event->event_y <= (con->rect.height / 2))
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corner |= BORDER_TOP;
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else corner |= BORDER_BOTTOM;
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struct resize_window_callback_params params = { corner, proportional, event };
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drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, ¶ms);
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}
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/*
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* This function grabs your pointer and lets you drag stuff around (borders).
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* Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
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* and the given callback will be called with the parameters specified (client,
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* border on which the click originally was), the original rect of the client,
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* the event and the new coordinates (x, y).
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*
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*/
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void drag_pointer(Con *con, xcb_button_press_event_t *event, xcb_window_t
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confine_to, border_t border, callback_t callback, void *extra)
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{
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uint32_t new_x, new_y;
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Rect old_rect;
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if (con != NULL)
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memcpy(&old_rect, &(con->rect), sizeof(Rect));
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/* Grab the pointer */
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xcb_grab_pointer_cookie_t cookie;
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xcb_grab_pointer_reply_t *reply;
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cookie = xcb_grab_pointer(conn,
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false, /* get all pointer events specified by the following mask */
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root, /* grab the root window */
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XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
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XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
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XCB_GRAB_MODE_ASYNC, /* keyboard mode */
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confine_to, /* confine_to = in which window should the cursor stay */
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XCB_NONE, /* don’t display a special cursor */
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XCB_CURRENT_TIME);
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if ((reply = xcb_grab_pointer_reply(conn, cookie, NULL)) == NULL) {
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ELOG("Could not grab pointer\n");
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return;
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}
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free(reply);
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/* Go into our own event loop */
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xcb_flush(conn);
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xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
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bool loop_done = false;
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/* I’ve always wanted to have my own eventhandler… */
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while (!loop_done && (inside_event = xcb_wait_for_event(conn))) {
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/* We now handle all events we can get using xcb_poll_for_event */
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do {
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/* skip x11 errors */
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if (inside_event->response_type == 0) {
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free(inside_event);
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continue;
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}
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/* Strip off the highest bit (set if the event is generated) */
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int type = (inside_event->response_type & 0x7F);
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switch (type) {
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case XCB_BUTTON_RELEASE:
|
||
loop_done = true;
|
||
break;
|
||
|
||
case XCB_MOTION_NOTIFY:
|
||
/* motion_notify events are saved for later */
|
||
FREE(last_motion_notify);
|
||
last_motion_notify = inside_event;
|
||
break;
|
||
|
||
case XCB_UNMAP_NOTIFY:
|
||
case XCB_KEY_PRESS:
|
||
case XCB_KEY_RELEASE:
|
||
DLOG("Unmap-notify, aborting\n");
|
||
handle_event(type, inside_event);
|
||
loop_done = true;
|
||
break;
|
||
|
||
default:
|
||
DLOG("Passing to original handler\n");
|
||
/* Use original handler */
|
||
handle_event(type, inside_event);
|
||
break;
|
||
}
|
||
if (last_motion_notify != inside_event)
|
||
free(inside_event);
|
||
} while ((inside_event = xcb_poll_for_event(conn)) != NULL);
|
||
|
||
if (last_motion_notify == NULL)
|
||
continue;
|
||
|
||
new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
|
||
new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
|
||
|
||
callback(con, &old_rect, new_x, new_y, extra);
|
||
FREE(last_motion_notify);
|
||
}
|
||
|
||
xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
|
||
xcb_flush(conn);
|
||
}
|
||
|
||
#if 0
|
||
/*
|
||
* Changes focus in the given direction for floating clients.
|
||
*
|
||
* Changing to the left/right means going to the previous/next floating client,
|
||
* changing to top/bottom means cycling through the Z-index.
|
||
*
|
||
*/
|
||
void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
|
||
DLOG("floating focus\n");
|
||
|
||
if (direction == D_LEFT || direction == D_RIGHT) {
|
||
/* Go to the next/previous floating client */
|
||
Client *client;
|
||
|
||
while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
|
||
TAILQ_NEXT(currently_focused, floating_clients))) !=
|
||
TAILQ_END(&(currently_focused->workspace->floating_clients))) {
|
||
if (!client->floating)
|
||
continue;
|
||
set_focus(conn, client, true);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Moves the client 10px to the specified direction.
|
||
*
|
||
*/
|
||
void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
|
||
DLOG("floating move\n");
|
||
|
||
Rect destination = currently_focused->rect;
|
||
Rect *screen = &(currently_focused->workspace->output->rect);
|
||
|
||
switch (direction) {
|
||
case D_LEFT:
|
||
destination.x -= 10;
|
||
break;
|
||
case D_RIGHT:
|
||
destination.x += 10;
|
||
break;
|
||
case D_UP:
|
||
destination.y -= 10;
|
||
break;
|
||
case D_DOWN:
|
||
destination.y += 10;
|
||
break;
|
||
/* to make static analyzers happy */
|
||
default:
|
||
break;
|
||
}
|
||
|
||
/* Prevent windows from vanishing completely */
|
||
if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
|
||
(int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
|
||
(int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
|
||
(int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
|
||
DLOG("boundary check failed, not moving\n");
|
||
return;
|
||
}
|
||
|
||
currently_focused->rect = destination;
|
||
reposition_client(conn, currently_focused);
|
||
|
||
/* Because reposition_client does not send a faked configure event (only resize does),
|
||
* we need to initiate that on our own */
|
||
fake_absolute_configure_notify(conn, currently_focused);
|
||
/* fake_absolute_configure_notify flushes */
|
||
}
|
||
|
||
/*
|
||
* Hides all floating clients (or show them if they are currently hidden) on
|
||
* the specified workspace.
|
||
*
|
||
*/
|
||
void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
|
||
Client *client;
|
||
|
||
workspace->floating_hidden = !workspace->floating_hidden;
|
||
DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
|
||
TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
|
||
if (workspace->floating_hidden)
|
||
client_unmap(conn, client);
|
||
else client_map(conn, client);
|
||
}
|
||
|
||
/* If we just unmapped all floating windows we should ensure that the focus
|
||
* is set correctly, that ist, to the first non-floating client in stack */
|
||
if (workspace->floating_hidden)
|
||
SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
|
||
if (client_is_floating(client))
|
||
continue;
|
||
set_focus(conn, client, true);
|
||
return;
|
||
}
|
||
|
||
xcb_flush(conn);
|
||
}
|
||
#endif
|