957 lines
35 KiB
C
957 lines
35 KiB
C
/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* floating.c: Floating windows.
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*
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*/
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#include "all.h"
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#ifndef MAX
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#define MAX(x, y) ((x) > (y) ? (x) : (y))
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#endif
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/*
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* Calculates sum of heights and sum of widths of all currently active outputs
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*
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*/
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static Rect total_outputs_dimensions(void) {
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if (TAILQ_EMPTY(&outputs))
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return (Rect){0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
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Output *output;
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/* Use Rect to encapsulate dimensions, ignoring x/y */
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Rect outputs_dimensions = {0, 0, 0, 0};
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TAILQ_FOREACH(output, &outputs, outputs) {
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outputs_dimensions.height += output->rect.height;
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outputs_dimensions.width += output->rect.width;
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}
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return outputs_dimensions;
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}
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/*
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* Updates I3_FLOATING_WINDOW by either setting or removing it on the con and
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* all its children.
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*
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*/
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static void floating_set_hint_atom(Con *con, bool floating) {
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if (!con_is_leaf(con)) {
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Con *child;
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TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
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floating_set_hint_atom(child, floating);
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}
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}
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if (con->window == NULL) {
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return;
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}
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if (floating) {
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uint32_t val = 1;
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xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
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A_I3_FLOATING_WINDOW, XCB_ATOM_CARDINAL, 32, 1, &val);
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} else {
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xcb_delete_property(conn, con->window->id, A_I3_FLOATING_WINDOW);
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}
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xcb_flush(conn);
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}
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/**
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* Called when a floating window is created or resized.
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* This function resizes the window if its size is higher or lower than the
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* configured maximum/minimum size, respectively.
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*
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*/
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void floating_check_size(Con *floating_con) {
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/* Define reasonable minimal and maximal sizes for floating windows */
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const int floating_sane_min_height = 50;
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const int floating_sane_min_width = 75;
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Rect floating_sane_max_dimensions;
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Con *focused_con = con_descend_focused(floating_con);
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Rect border_rect = con_border_style_rect(focused_con);
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/* We have to do the opposite calculations that render_con() do
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* to get the exact size we want. */
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border_rect.width = -border_rect.width;
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border_rect.width += 2 * focused_con->border_width;
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border_rect.height = -border_rect.height;
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border_rect.height += 2 * focused_con->border_width;
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if (con_border_style(focused_con) == BS_NORMAL) {
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border_rect.height += render_deco_height();
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}
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if (focused_con->window != NULL) {
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if (focused_con->window->min_width) {
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floating_con->rect.width -= border_rect.width;
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floating_con->rect.width = max(floating_con->rect.width, focused_con->window->min_width);
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floating_con->rect.width += border_rect.width;
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}
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if (focused_con->window->min_height) {
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floating_con->rect.height -= border_rect.height;
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floating_con->rect.height = max(floating_con->rect.height, focused_con->window->min_height);
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floating_con->rect.height += border_rect.height;
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}
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if (focused_con->window->height_increment &&
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floating_con->rect.height >= focused_con->window->base_height + border_rect.height) {
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floating_con->rect.height -= focused_con->window->base_height + border_rect.height;
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floating_con->rect.height -= floating_con->rect.height % focused_con->window->height_increment;
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floating_con->rect.height += focused_con->window->base_height + border_rect.height;
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}
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if (focused_con->window->width_increment &&
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floating_con->rect.width >= focused_con->window->base_width + border_rect.width) {
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floating_con->rect.width -= focused_con->window->base_width + border_rect.width;
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floating_con->rect.width -= floating_con->rect.width % focused_con->window->width_increment;
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floating_con->rect.width += focused_con->window->base_width + border_rect.width;
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}
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}
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/* Unless user requests otherwise (-1), raise the width/height to
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* reasonable minimum dimensions */
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if (config.floating_minimum_height != -1) {
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floating_con->rect.height -= border_rect.height;
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if (config.floating_minimum_height == 0) {
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floating_con->rect.height = max(floating_con->rect.height, floating_sane_min_height);
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} else {
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floating_con->rect.height = max(floating_con->rect.height, config.floating_minimum_height);
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}
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floating_con->rect.height += border_rect.height;
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}
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if (config.floating_minimum_width != -1) {
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floating_con->rect.width -= border_rect.width;
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if (config.floating_minimum_width == 0) {
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floating_con->rect.width = max(floating_con->rect.width, floating_sane_min_width);
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} else {
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floating_con->rect.width = max(floating_con->rect.width, config.floating_minimum_width);
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}
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floating_con->rect.width += border_rect.width;
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}
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/* Unless user requests otherwise (-1), ensure width/height do not exceed
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* configured maxima or, if unconfigured, limit to combined width of all
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* outputs */
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floating_sane_max_dimensions = total_outputs_dimensions();
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if (config.floating_maximum_height != -1) {
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floating_con->rect.height -= border_rect.height;
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if (config.floating_maximum_height == 0) {
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floating_con->rect.height = min(floating_con->rect.height, floating_sane_max_dimensions.height);
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} else {
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floating_con->rect.height = min(floating_con->rect.height, config.floating_maximum_height);
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}
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floating_con->rect.height += border_rect.height;
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}
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if (config.floating_maximum_width != -1) {
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floating_con->rect.width -= border_rect.width;
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if (config.floating_maximum_width == 0) {
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floating_con->rect.width = min(floating_con->rect.width, floating_sane_max_dimensions.width);
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} else {
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floating_con->rect.width = min(floating_con->rect.width, config.floating_maximum_width);
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}
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floating_con->rect.width += border_rect.width;
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}
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}
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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_is_docked(con)) {
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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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if (con->type == CT_WORKSPACE) {
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LOG("Container is a workspace, not enabling floating mode.\n");
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return;
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}
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Con *focus_head_placeholder = NULL;
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bool focus_before_parent = true;
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if (!set_focus) {
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/* Find recursively the ancestor container which is a child of our workspace.
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* We need to reuse its focus position later. */
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Con *ancestor = con;
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while (ancestor->parent->type != CT_WORKSPACE) {
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focus_before_parent &= TAILQ_FIRST(&(ancestor->parent->focus_head)) == ancestor;
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ancestor = ancestor->parent;
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}
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/* Consider the part of the focus stack of our current workspace:
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* [ ... S_{i-1} S_{i} S_{i+1} ... ]
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* Where S_{x} is a container tree and the container 'con' that is beeing switched to
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* floating belongs in S_{i}. The new floating container, 'nc', will have the
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* workspace as its parent so it needs to be placed in this stack. If C was focused
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* we just need to call con_focus(). Otherwise, nc must be placed before or after S_{i}.
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* We should avoid using the S_{i} container for our operations since it might get
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* killed if it has no other children. So, the two possible positions are after S_{i-1}
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* or before S_{i+1}.
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*/
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if (focus_before_parent) {
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focus_head_placeholder = TAILQ_PREV(ancestor, focus_head, focused);
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} else {
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focus_head_placeholder = TAILQ_NEXT(ancestor, focused);
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}
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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_internal() */
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con_detach(con);
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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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nc->type = CT_FLOATING_CON;
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nc->layout = L_SPLITH;
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/* We insert nc already, even though its rect is not yet calculated. This
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* is necessary because otherwise the workspace might be empty (and get
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* closed in tree_close_internal()) even though it’s not. */
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TAILQ_INSERT_HEAD(&(ws->floating_head), nc, floating_windows);
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struct focus_head *fh = &(ws->focus_head);
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if (focus_before_parent) {
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if (focus_head_placeholder) {
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TAILQ_INSERT_AFTER(fh, focus_head_placeholder, nc, focused);
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} else {
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TAILQ_INSERT_HEAD(fh, nc, focused);
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}
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} else {
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if (focus_head_placeholder) {
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TAILQ_INSERT_BEFORE(focus_head_placeholder, nc, focused);
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} else {
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/* Also used for the set_focus case */
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TAILQ_INSERT_TAIL(fh, nc, focused);
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}
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}
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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) &&
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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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Con *parent = con->parent;
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/* clear the pointer before calling tree_close_internal in which the memory is freed */
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con->parent = NULL;
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tree_close_internal(parent, DONT_KILL_WINDOW, false);
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}
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char *name;
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sasprintf(&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 = render_deco_height();
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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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DLOG("Geometry = (%d, %d) with %d x %d\n", con->geometry.x, con->geometry.y, con->geometry.width, con->geometry.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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TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
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TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
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/* 3: attach the child to the new parent container. We need to do this
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* because con_border_style_rect() needs to access con->parent. */
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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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/* 4: set the border style as specified with new_float */
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if (automatic)
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con->border_style = config.default_floating_border;
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/* Add pixels for the decoration. */
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Rect border_style_rect = con_border_style_rect(con);
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nc->rect.height -= border_style_rect.height;
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nc->rect.width -= border_style_rect.width;
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/* Add some more pixels for the title bar */
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if (con_border_style(con) == BS_NORMAL) {
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nc->rect.height += deco_height;
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}
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/* Honor the X11 border */
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nc->rect.height += con->border_width * 2;
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nc->rect.width += con->border_width * 2;
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floating_check_size(nc);
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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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floating_center(nc, leader->rect);
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} else {
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/* center the window on workspace as fallback */
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floating_center(nc, ws->rect);
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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_from_rect(nc->rect);
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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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/* If moving from one output to another, keep the relative position
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* consistent (e.g. a centered dialog will remain centered). */
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if (current_output) {
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floating_fix_coordinates(nc, ¤t_output->con->rect, &correct_output->rect);
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/* Make sure that the result is in the correct output. */
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current_output = get_output_from_rect(nc->rect);
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}
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if (!current_output || current_output->con != correct_output) {
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floating_center(nc, ws->rect);
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}
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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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/* 5: Subtract the deco_height in order to make the floating window appear
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* at precisely the position it specified in its original geometry (which
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* is what applications might remember). */
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deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
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nc->rect.y -= deco_height;
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DLOG("Corrected y = %d (deco_height = %d)\n", nc->rect.y, deco_height);
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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_activate(con);
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floating_set_hint_atom(nc, true);
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ipc_send_window_event("floating", con);
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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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if (con_is_internal(ws)) {
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LOG("Can't disable floating for container in internal workspace.\n");
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return;
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}
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Con *tiling_focused = con_descend_tiling_focused(ws);
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if (tiling_focused->type == CT_WORKSPACE) {
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Con *parent = con->parent;
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con_detach(con);
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con->parent = NULL;
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tree_close_internal(parent, DONT_KILL_WINDOW, true);
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con_attach(con, tiling_focused, false);
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con->percent = 0.0;
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con_fix_percent(con->parent);
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} else {
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insert_con_into(con, tiling_focused, AFTER);
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}
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con->floating = FLOATING_USER_OFF;
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floating_set_hint_atom(con, false);
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ipc_send_window_event("floating", 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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/* forbid the command to toggle floating on a CT_FLOATING_CON */
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if (con->type == CT_FLOATING_CON) {
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ELOG("Cannot toggle floating mode on con = %p because it is of type CT_FLOATING_CON.\n", con);
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return;
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}
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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_from_rect(con->rect);
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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, false, true, false);
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workspace_show(ws);
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con_activate(con_descend_focused(con));
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return true;
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}
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/*
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* Centers a floating con above the specified rect.
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*
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*/
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void floating_center(Con *con, Rect rect) {
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con->rect.x = rect.x + (rect.width / 2) - (con->rect.width / 2);
|
||
con->rect.y = rect.y + (rect.height / 2) - (con->rect.height / 2);
|
||
}
|
||
|
||
/*
|
||
* Moves the given floating con to the current pointer position.
|
||
*
|
||
*/
|
||
void floating_move_to_pointer(Con *con) {
|
||
assert(con->type == CT_FLOATING_CON);
|
||
|
||
xcb_query_pointer_reply_t *reply = xcb_query_pointer_reply(conn, xcb_query_pointer(conn, root), NULL);
|
||
if (reply == NULL) {
|
||
ELOG("could not query pointer position, not moving this container\n");
|
||
return;
|
||
}
|
||
|
||
Output *output = get_output_containing(reply->root_x, reply->root_y);
|
||
if (output == NULL) {
|
||
ELOG("The pointer is not on any output, cannot move the container here.\n");
|
||
return;
|
||
}
|
||
|
||
/* Determine where to put the window. */
|
||
int32_t x = reply->root_x - con->rect.width / 2;
|
||
int32_t y = reply->root_y - con->rect.height / 2;
|
||
FREE(reply);
|
||
|
||
/* Correct target coordinates to be in-bounds. */
|
||
x = MAX(x, (int32_t)output->rect.x);
|
||
y = MAX(y, (int32_t)output->rect.y);
|
||
if (x + con->rect.width > output->rect.x + output->rect.width)
|
||
x = output->rect.x + output->rect.width - con->rect.width;
|
||
if (y + con->rect.height > output->rect.y + output->rect.height)
|
||
y = output->rect.y + output->rect.height - con->rect.height;
|
||
|
||
/* Update container's coordinates to position it correctly. */
|
||
floating_reposition(con, (Rect){x, y, con->rect.width, con->rect.height});
|
||
}
|
||
|
||
DRAGGING_CB(drag_window_callback) {
|
||
const struct xcb_button_press_event_t *event = extra;
|
||
|
||
/* Reposition the client correctly while moving */
|
||
con->rect.x = old_rect->x + (new_x - event->root_x);
|
||
con->rect.y = old_rect->y + (new_y - event->root_y);
|
||
|
||
render_con(con, false);
|
||
x_push_node(con);
|
||
xcb_flush(conn);
|
||
|
||
/* Check if we cross workspace boundaries while moving */
|
||
if (!floating_maybe_reassign_ws(con))
|
||
return;
|
||
/* Ensure not to warp the pointer while dragging */
|
||
x_set_warp_to(NULL);
|
||
tree_render();
|
||
}
|
||
|
||
/*
|
||
* Called when the user clicked on the titlebar of a floating window.
|
||
* Calls the drag_pointer function with the drag_window callback
|
||
*
|
||
*/
|
||
void floating_drag_window(Con *con, const xcb_button_press_event_t *event) {
|
||
DLOG("floating_drag_window\n");
|
||
|
||
/* Push changes before dragging, so that the window gets raised now and not
|
||
* after the user releases the mouse button */
|
||
tree_render();
|
||
|
||
/* Store the initial rect in case of user revert/cancel */
|
||
Rect initial_rect = con->rect;
|
||
|
||
/* Drag the window */
|
||
drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, XCURSOR_CURSOR_MOVE, drag_window_callback, event);
|
||
|
||
if (!con_exists(con)) {
|
||
DLOG("The container has been closed in the meantime.\n");
|
||
return;
|
||
}
|
||
|
||
/* If the user cancelled, undo the changes. */
|
||
if (drag_result == DRAG_REVERT) {
|
||
floating_reposition(con, initial_rect);
|
||
return;
|
||
}
|
||
|
||
/* If this is a scratchpad window, don't auto center it from now on. */
|
||
if (con->scratchpad_state == SCRATCHPAD_FRESH)
|
||
con->scratchpad_state = SCRATCHPAD_CHANGED;
|
||
|
||
tree_render();
|
||
}
|
||
|
||
/*
|
||
* This is an ugly data structure which we need because there is no standard
|
||
* way of having nested functions (only available as a gcc extension at the
|
||
* moment, clang doesn’t support it) or blocks (only available as a clang
|
||
* extension and only on Mac OS X systems at the moment).
|
||
*
|
||
*/
|
||
struct resize_window_callback_params {
|
||
const border_t corner;
|
||
const bool proportional;
|
||
const xcb_button_press_event_t *event;
|
||
};
|
||
|
||
DRAGGING_CB(resize_window_callback) {
|
||
const struct resize_window_callback_params *params = extra;
|
||
const xcb_button_press_event_t *event = params->event;
|
||
border_t corner = params->corner;
|
||
|
||
int32_t dest_x = con->rect.x;
|
||
int32_t dest_y = con->rect.y;
|
||
uint32_t dest_width;
|
||
uint32_t dest_height;
|
||
|
||
double ratio = (double)old_rect->width / old_rect->height;
|
||
|
||
/* First guess: We resize by exactly the amount the mouse moved,
|
||
* taking into account in which corner the client was grabbed */
|
||
if (corner & BORDER_LEFT)
|
||
dest_width = old_rect->width - (new_x - event->root_x);
|
||
else
|
||
dest_width = old_rect->width + (new_x - event->root_x);
|
||
|
||
if (corner & BORDER_TOP)
|
||
dest_height = old_rect->height - (new_y - event->root_y);
|
||
else
|
||
dest_height = old_rect->height + (new_y - event->root_y);
|
||
|
||
/* User wants to keep proportions, so we may have to adjust our values */
|
||
if (params->proportional) {
|
||
dest_width = max(dest_width, (int)(dest_height * ratio));
|
||
dest_height = max(dest_height, (int)(dest_width / ratio));
|
||
}
|
||
|
||
con->rect = (Rect){dest_x, dest_y, dest_width, dest_height};
|
||
|
||
/* Obey window size */
|
||
floating_check_size(con);
|
||
|
||
/* If not the lower right corner is grabbed, we must also reposition
|
||
* the client by exactly the amount we resized it */
|
||
if (corner & BORDER_LEFT)
|
||
dest_x = old_rect->x + (old_rect->width - con->rect.width);
|
||
|
||
if (corner & BORDER_TOP)
|
||
dest_y = old_rect->y + (old_rect->height - con->rect.height);
|
||
|
||
con->rect.x = dest_x;
|
||
con->rect.y = dest_y;
|
||
|
||
/* TODO: don’t re-render the whole tree just because we change
|
||
* coordinates of a floating window */
|
||
tree_render();
|
||
x_push_changes(croot);
|
||
}
|
||
|
||
/*
|
||
* Called when the user clicked on a floating window while holding the
|
||
* floating_modifier and the right mouse button.
|
||
* Calls the drag_pointer function with the resize_window callback
|
||
*
|
||
*/
|
||
void floating_resize_window(Con *con, const bool proportional,
|
||
const xcb_button_press_event_t *event) {
|
||
DLOG("floating_resize_window\n");
|
||
|
||
/* corner saves the nearest corner to the original click. It contains
|
||
* a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
|
||
border_t corner = 0;
|
||
|
||
if (event->event_x <= (int16_t)(con->rect.width / 2))
|
||
corner |= BORDER_LEFT;
|
||
else
|
||
corner |= BORDER_RIGHT;
|
||
|
||
int cursor = 0;
|
||
if (event->event_y <= (int16_t)(con->rect.height / 2)) {
|
||
corner |= BORDER_TOP;
|
||
cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_TOP_LEFT_CORNER : XCURSOR_CURSOR_TOP_RIGHT_CORNER;
|
||
} else {
|
||
corner |= BORDER_BOTTOM;
|
||
cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_BOTTOM_LEFT_CORNER : XCURSOR_CURSOR_BOTTOM_RIGHT_CORNER;
|
||
}
|
||
|
||
struct resize_window_callback_params params = {corner, proportional, event};
|
||
|
||
/* get the initial rect in case of revert/cancel */
|
||
Rect initial_rect = con->rect;
|
||
|
||
drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, cursor, resize_window_callback, ¶ms);
|
||
|
||
if (!con_exists(con)) {
|
||
DLOG("The container has been closed in the meantime.\n");
|
||
return;
|
||
}
|
||
|
||
/* If the user cancels, undo the resize */
|
||
if (drag_result == DRAG_REVERT)
|
||
floating_reposition(con, initial_rect);
|
||
|
||
/* If this is a scratchpad window, don't auto center it from now on. */
|
||
if (con->scratchpad_state == SCRATCHPAD_FRESH)
|
||
con->scratchpad_state = SCRATCHPAD_CHANGED;
|
||
}
|
||
|
||
/* Custom data structure used to track dragging-related events. */
|
||
struct drag_x11_cb {
|
||
ev_prepare prepare;
|
||
|
||
/* Whether this modal event loop should be exited and with which result. */
|
||
drag_result_t result;
|
||
|
||
/* The container that is being dragged or resized, or NULL if this is a
|
||
* drag of the resize handle. */
|
||
Con *con;
|
||
|
||
/* The dimensions of con when the loop was started. */
|
||
Rect old_rect;
|
||
|
||
/* The callback to invoke after every pointer movement. */
|
||
callback_t callback;
|
||
|
||
/* User data pointer for callback. */
|
||
const void *extra;
|
||
};
|
||
|
||
static bool drain_drag_events(EV_P, struct drag_x11_cb *dragloop) {
|
||
xcb_motion_notify_event_t *last_motion_notify = NULL;
|
||
xcb_generic_event_t *event;
|
||
|
||
while ((event = xcb_poll_for_event(conn)) != NULL) {
|
||
if (event->response_type == 0) {
|
||
xcb_generic_error_t *error = (xcb_generic_error_t *)event;
|
||
DLOG("X11 Error received (probably harmless)! sequence 0x%x, error_code = %d\n",
|
||
error->sequence, error->error_code);
|
||
free(event);
|
||
continue;
|
||
}
|
||
|
||
/* Strip off the highest bit (set if the event is generated) */
|
||
int type = (event->response_type & 0x7F);
|
||
|
||
switch (type) {
|
||
case XCB_BUTTON_RELEASE:
|
||
dragloop->result = DRAG_SUCCESS;
|
||
break;
|
||
|
||
case XCB_KEY_PRESS:
|
||
DLOG("A key was pressed during drag, reverting changes.\n");
|
||
dragloop->result = DRAG_REVERT;
|
||
handle_event(type, event);
|
||
break;
|
||
|
||
case XCB_UNMAP_NOTIFY: {
|
||
xcb_unmap_notify_event_t *unmap_event = (xcb_unmap_notify_event_t *)event;
|
||
Con *con = con_by_window_id(unmap_event->window);
|
||
|
||
if (con != NULL) {
|
||
DLOG("UnmapNotify for window 0x%08x (container %p)\n", unmap_event->window, con);
|
||
|
||
if (con_get_workspace(con) == con_get_workspace(focused)) {
|
||
DLOG("UnmapNotify for a managed window on the current workspace, aborting\n");
|
||
dragloop->result = DRAG_ABORT;
|
||
}
|
||
}
|
||
|
||
handle_event(type, event);
|
||
break;
|
||
}
|
||
|
||
case XCB_MOTION_NOTIFY:
|
||
/* motion_notify events are saved for later */
|
||
FREE(last_motion_notify);
|
||
last_motion_notify = (xcb_motion_notify_event_t *)event;
|
||
break;
|
||
|
||
default:
|
||
DLOG("Passing to original handler\n");
|
||
handle_event(type, event);
|
||
break;
|
||
}
|
||
|
||
if (last_motion_notify != (xcb_motion_notify_event_t *)event)
|
||
free(event);
|
||
|
||
if (dragloop->result != DRAGGING) {
|
||
ev_break(EV_A_ EVBREAK_ONE);
|
||
if (dragloop->result == DRAG_SUCCESS) {
|
||
/* Ensure motion notify events are handled. */
|
||
break;
|
||
} else {
|
||
free(last_motion_notify);
|
||
return true;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (last_motion_notify == NULL) {
|
||
return true;
|
||
}
|
||
|
||
/* Ensure that we are either dragging the resize handle (con is NULL) or that the
|
||
* container still exists. The latter might not be true, e.g., if the window closed
|
||
* for any reason while the user was dragging it. */
|
||
if (!dragloop->con || con_exists(dragloop->con)) {
|
||
dragloop->callback(
|
||
dragloop->con,
|
||
&(dragloop->old_rect),
|
||
last_motion_notify->root_x,
|
||
last_motion_notify->root_y,
|
||
dragloop->extra);
|
||
}
|
||
FREE(last_motion_notify);
|
||
|
||
xcb_flush(conn);
|
||
return dragloop->result != DRAGGING;
|
||
}
|
||
|
||
static void xcb_drag_prepare_cb(EV_P_ ev_prepare *w, int revents) {
|
||
struct drag_x11_cb *dragloop = (struct drag_x11_cb *)w->data;
|
||
while (!drain_drag_events(EV_A, dragloop)) {
|
||
/* repeatedly drain events: draining might produce additional ones */
|
||
}
|
||
}
|
||
|
||
/*
|
||
* This function grabs your pointer and keyboard and lets you drag stuff around
|
||
* (borders). Every time you move your mouse, an XCB_MOTION_NOTIFY event will
|
||
* be received and the given callback will be called with the parameters
|
||
* specified (client, border on which the click originally was), the original
|
||
* rect of the client, the event and the new coordinates (x, y).
|
||
*
|
||
*/
|
||
drag_result_t drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_window_t confine_to,
|
||
border_t border, int cursor, callback_t callback, const void *extra) {
|
||
xcb_cursor_t xcursor = (cursor && xcursor_supported) ? xcursor_get_cursor(cursor) : XCB_NONE;
|
||
|
||
/* Grab the pointer */
|
||
xcb_grab_pointer_cookie_t cookie;
|
||
xcb_grab_pointer_reply_t *reply;
|
||
xcb_generic_error_t *error;
|
||
|
||
cookie = xcb_grab_pointer(conn,
|
||
false, /* get all pointer events specified by the following mask */
|
||
root, /* grab the root window */
|
||
XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
|
||
XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
|
||
XCB_GRAB_MODE_ASYNC, /* keyboard mode */
|
||
confine_to, /* confine_to = in which window should the cursor stay */
|
||
xcursor, /* possibly display a special cursor */
|
||
XCB_CURRENT_TIME);
|
||
|
||
if ((reply = xcb_grab_pointer_reply(conn, cookie, &error)) == NULL) {
|
||
ELOG("Could not grab pointer (error_code = %d)\n", error->error_code);
|
||
free(error);
|
||
return DRAG_ABORT;
|
||
}
|
||
|
||
free(reply);
|
||
|
||
/* Grab the keyboard */
|
||
xcb_grab_keyboard_cookie_t keyb_cookie;
|
||
xcb_grab_keyboard_reply_t *keyb_reply;
|
||
|
||
keyb_cookie = xcb_grab_keyboard(conn,
|
||
false, /* get all keyboard events */
|
||
root, /* grab the root window */
|
||
XCB_CURRENT_TIME,
|
||
XCB_GRAB_MODE_ASYNC, /* continue processing pointer events as normal */
|
||
XCB_GRAB_MODE_ASYNC /* keyboard mode */
|
||
);
|
||
|
||
if ((keyb_reply = xcb_grab_keyboard_reply(conn, keyb_cookie, &error)) == NULL) {
|
||
ELOG("Could not grab keyboard (error_code = %d)\n", error->error_code);
|
||
free(error);
|
||
xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
|
||
return DRAG_ABORT;
|
||
}
|
||
|
||
free(keyb_reply);
|
||
|
||
/* Go into our own event loop */
|
||
struct drag_x11_cb loop = {
|
||
.result = DRAGGING,
|
||
.con = con,
|
||
.callback = callback,
|
||
.extra = extra,
|
||
};
|
||
ev_prepare *prepare = &loop.prepare;
|
||
if (con)
|
||
loop.old_rect = con->rect;
|
||
ev_prepare_init(prepare, xcb_drag_prepare_cb);
|
||
prepare->data = &loop;
|
||
main_set_x11_cb(false);
|
||
ev_prepare_start(main_loop, prepare);
|
||
|
||
ev_loop(main_loop, 0);
|
||
|
||
ev_prepare_stop(main_loop, prepare);
|
||
main_set_x11_cb(true);
|
||
|
||
xcb_ungrab_keyboard(conn, XCB_CURRENT_TIME);
|
||
xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
|
||
xcb_flush(conn);
|
||
|
||
return loop.result;
|
||
}
|
||
|
||
/*
|
||
* Repositions the CT_FLOATING_CON to have the coordinates specified by
|
||
* newrect, but only if the coordinates are not out-of-bounds. Also reassigns
|
||
* the floating con to a different workspace if this move was across different
|
||
* outputs.
|
||
*
|
||
*/
|
||
bool floating_reposition(Con *con, Rect newrect) {
|
||
/* Sanity check: Are the new coordinates on any output? If not, we
|
||
* ignore that request. */
|
||
if (!output_containing_rect(newrect)) {
|
||
ELOG("No output found at destination coordinates. Not repositioning.\n");
|
||
return false;
|
||
}
|
||
|
||
con->rect = newrect;
|
||
|
||
floating_maybe_reassign_ws(con);
|
||
|
||
/* If this is a scratchpad window, don't auto center it from now on. */
|
||
if (con->scratchpad_state == SCRATCHPAD_FRESH)
|
||
con->scratchpad_state = SCRATCHPAD_CHANGED;
|
||
|
||
tree_render();
|
||
return true;
|
||
}
|
||
|
||
/*
|
||
* Sets size of the CT_FLOATING_CON to specified dimensions. Might limit the
|
||
* actual size with regard to size constraints taken from user settings.
|
||
* Additionally, the dimensions may be upscaled until they're divisible by the
|
||
* window's size hints.
|
||
*
|
||
*/
|
||
void floating_resize(Con *floating_con, int x, int y) {
|
||
DLOG("floating resize to %dx%d px\n", x, y);
|
||
Rect *rect = &floating_con->rect;
|
||
Con *focused_con = con_descend_focused(floating_con);
|
||
if (focused_con->window == NULL) {
|
||
DLOG("No window is focused. Not resizing.\n");
|
||
return;
|
||
}
|
||
int wi = focused_con->window->width_increment;
|
||
int hi = focused_con->window->height_increment;
|
||
rect->width = x;
|
||
rect->height = y;
|
||
if (wi)
|
||
rect->width += (wi - 1 - rect->width) % wi;
|
||
if (hi)
|
||
rect->height += (hi - 1 - rect->height) % hi;
|
||
|
||
floating_check_size(floating_con);
|
||
|
||
/* If this is a scratchpad window, don't auto center it from now on. */
|
||
if (floating_con->scratchpad_state == SCRATCHPAD_FRESH)
|
||
floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
|
||
}
|
||
|
||
/*
|
||
* Fixes the coordinates of the floating window whenever the window gets
|
||
* reassigned to a different output (or when the output’s rect changes).
|
||
*
|
||
*/
|
||
void floating_fix_coordinates(Con *con, Rect *old_rect, Rect *new_rect) {
|
||
DLOG("Fixing coordinates of floating window %p (rect (%d, %d), %d x %d)\n",
|
||
con, con->rect.x, con->rect.y, con->rect.width, con->rect.height);
|
||
DLOG("old_rect = (%d, %d), %d x %d\n",
|
||
old_rect->x, old_rect->y, old_rect->width, old_rect->height);
|
||
DLOG("new_rect = (%d, %d), %d x %d\n",
|
||
new_rect->x, new_rect->y, new_rect->width, new_rect->height);
|
||
/* First we get the x/y coordinates relative to the x/y coordinates
|
||
* of the output on which the window is on */
|
||
int32_t rel_x = con->rect.x - old_rect->x + (int32_t)(con->rect.width / 2);
|
||
int32_t rel_y = con->rect.y - old_rect->y + (int32_t)(con->rect.height / 2);
|
||
/* Then we calculate a fraction, for example 0.63 for a window
|
||
* which is at y = 1212 of a 1920 px high output */
|
||
DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n",
|
||
rel_x, rel_y, (double)rel_x / old_rect->width, (double)rel_y / old_rect->height,
|
||
old_rect->width, old_rect->height);
|
||
/* Here we have to multiply at first. Or we will lose precision when not compiled with -msse2 */
|
||
con->rect.x = (int32_t)new_rect->x + (double)(rel_x * (int32_t)new_rect->width) / (int32_t)old_rect->width - (int32_t)(con->rect.width / 2);
|
||
con->rect.y = (int32_t)new_rect->y + (double)(rel_y * (int32_t)new_rect->height) / (int32_t)old_rect->height - (int32_t)(con->rect.height / 2);
|
||
DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y);
|
||
}
|