X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Ffloating.c;h=bfb130fbdf2b168ee9fb036e90eb75df06834429;hb=d2d6d6e0;hp=14988818418c972e70a9d1181cf10d990c886256;hpb=458e2a2e46027844d733540ddea1701fcfca230a;p=i3%2Fi3

diff --git a/src/floating.c b/src/floating.c
index 14988818..bfb130fb 100644
--- a/src/floating.c
+++ b/src/floating.c
@@ -59,13 +59,18 @@ static void floating_set_hint_atom(Con *con, bool floating) {
     xcb_flush(conn);
 }
 
-/**
- * Called when a floating window is created or resized.
- * This function resizes the window if its size is higher or lower than the
- * configured maximum/minimum size, respectively.
+/*
+ * Called when a floating window is created or resized.  This function resizes
+ * the window if its size is higher or lower than the configured maximum/minimum
+ * size, respectively or when adjustments are needed to conform to the
+ * configured size increments or aspect ratio limits.
+ *
+ * When prefer_height is true and the window needs to be resized because of the
+ * configured aspect ratio, the width is adjusted first, preserving the previous
+ * height.
  *
  */
-void floating_check_size(Con *floating_con) {
+void floating_check_size(Con *floating_con, bool prefer_height) {
     /* Define reasonable minimal and maximal sizes for floating windows */
     const int floating_sane_min_height = 50;
     const int floating_sane_min_width = 75;
@@ -83,31 +88,89 @@ void floating_check_size(Con *floating_con) {
         border_rect.height += render_deco_height();
     }
 
-    if (focused_con->window != NULL) {
-        if (focused_con->window->min_width) {
+    i3Window *window = focused_con->window;
+    if (window != NULL) {
+        /* ICCCM says: If a base size is not provided, the minimum size is to be used in its place
+         * and vice versa. */
+        int min_width = (window->min_width ? window->min_width : window->base_width);
+        int min_height = (window->min_height ? window->min_height : window->base_height);
+        int base_width = (window->base_width ? window->base_width : window->min_width);
+        int base_height = (window->base_height ? window->base_height : window->min_height);
+
+        if (min_width) {
+            floating_con->rect.width -= border_rect.width;
+            floating_con->rect.width = max(floating_con->rect.width, min_width);
+            floating_con->rect.width += border_rect.width;
+        }
+
+        if (min_height) {
+            floating_con->rect.height -= border_rect.height;
+            floating_con->rect.height = max(floating_con->rect.height, min_height);
+            floating_con->rect.height += border_rect.height;
+        }
+
+        if (window->max_width) {
             floating_con->rect.width -= border_rect.width;
-            floating_con->rect.width = max(floating_con->rect.width, focused_con->window->min_width);
+            floating_con->rect.width = min(floating_con->rect.width, window->max_width);
             floating_con->rect.width += border_rect.width;
         }
 
-        if (focused_con->window->min_height) {
+        if (window->max_height) {
             floating_con->rect.height -= border_rect.height;
-            floating_con->rect.height = max(floating_con->rect.height, focused_con->window->min_height);
+            floating_con->rect.height = min(floating_con->rect.height, window->max_height);
             floating_con->rect.height += border_rect.height;
         }
 
-        if (focused_con->window->height_increment &&
-            floating_con->rect.height >= focused_con->window->base_height + border_rect.height) {
-            floating_con->rect.height -= focused_con->window->base_height + border_rect.height;
-            floating_con->rect.height -= floating_con->rect.height % focused_con->window->height_increment;
-            floating_con->rect.height += focused_con->window->base_height + border_rect.height;
+        /* Obey the aspect ratio, if any, unless we are in fullscreen mode.
+         *
+         * The spec isn’t explicit on whether the aspect ratio hints should be
+         * respected during fullscreen mode. Other WMs such as Openbox don’t do
+         * that, and this post suggests that this is the correct way to do it:
+         * https://mail.gnome.org/archives/wm-spec-list/2003-May/msg00007.html
+         *
+         * Ignoring aspect ratio during fullscreen was necessary to fix MPlayer
+         * subtitle rendering, see https://bugs.i3wm.org/594 */
+        const double min_ar = window->min_aspect_ratio;
+        const double max_ar = window->max_aspect_ratio;
+        if (floating_con->fullscreen_mode == CF_NONE && (min_ar > 0 || max_ar > 0)) {
+            /* The ICCCM says to subtract the base size from the window size for
+             * aspect ratio calculations. However, unlike determining the base
+             * size itself we must not fall back to using the minimum size in
+             * this case according to the ICCCM. */
+            double width = floating_con->rect.width - window->base_width - border_rect.width;
+            double height = floating_con->rect.height - window->base_height - border_rect.height;
+            const double ar = (double)width / (double)height;
+            double new_ar = -1;
+            if (min_ar > 0 && ar < min_ar) {
+                new_ar = min_ar;
+            } else if (max_ar > 0 && ar > max_ar) {
+                new_ar = max_ar;
+            }
+            if (new_ar > 0) {
+                if (prefer_height) {
+                    width = round(height * new_ar);
+                    height = round(width / new_ar);
+                } else {
+                    height = round(width / new_ar);
+                    width = round(height * new_ar);
+                }
+                floating_con->rect.width = width + window->base_width + border_rect.width;
+                floating_con->rect.height = height + window->base_height + border_rect.height;
+            }
         }
 
-        if (focused_con->window->width_increment &&
-            floating_con->rect.width >= focused_con->window->base_width + border_rect.width) {
-            floating_con->rect.width -= focused_con->window->base_width + border_rect.width;
-            floating_con->rect.width -= floating_con->rect.width % focused_con->window->width_increment;
-            floating_con->rect.width += focused_con->window->base_width + border_rect.width;
+        if (window->height_increment &&
+            floating_con->rect.height >= base_height + border_rect.height) {
+            floating_con->rect.height -= base_height + border_rect.height;
+            floating_con->rect.height -= floating_con->rect.height % window->height_increment;
+            floating_con->rect.height += base_height + border_rect.height;
+        }
+
+        if (window->width_increment &&
+            floating_con->rect.width >= base_width + border_rect.width) {
+            floating_con->rect.width -= base_width + border_rect.width;
+            floating_con->rect.width -= floating_con->rect.width % window->width_increment;
+            floating_con->rect.width += base_width + border_rect.width;
         }
     }
 
@@ -176,11 +239,36 @@ void floating_enable(Con *con, bool automatic) {
         return;
     }
 
+    Con *focus_head_placeholder = NULL;
+    bool focus_before_parent = true;
+    if (!set_focus) {
+        /* Find recursively the ancestor container which is a child of our workspace.
+         * We need to reuse its focus position later. */
+        Con *ancestor = con;
+        while (ancestor->parent->type != CT_WORKSPACE) {
+            focus_before_parent &= TAILQ_FIRST(&(ancestor->parent->focus_head)) == ancestor;
+            ancestor = ancestor->parent;
+        }
+        /* Consider the part of the focus stack of our current workspace:
+         * [ ... S_{i-1} S_{i} S_{i+1} ... ]
+         * Where S_{x} is a container tree and the container 'con' that is beeing switched to
+         * floating belongs in S_{i}. The new floating container, 'nc', will have the
+         * workspace as its parent so it needs to be placed in this stack. If C was focused
+         * we just need to call con_focus(). Otherwise, nc must be placed before or after S_{i}.
+         * We should avoid using the S_{i} container for our operations since it might get
+         * killed if it has no other children. So, the two possible positions are after S_{i-1}
+         * or before S_{i+1}.
+         */
+        if (focus_before_parent) {
+            focus_head_placeholder = TAILQ_PREV(ancestor, focus_head, focused);
+        } else {
+            focus_head_placeholder = TAILQ_NEXT(ancestor, focused);
+        }
+    }
+
     /* 1: detach the container from its parent */
     /* TODO: refactor this with tree_close_internal() */
-    TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
-    TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
-
+    con_detach(con);
     con_fix_percent(con->parent);
 
     /* 2: create a new container to render the decoration on, add
@@ -196,12 +284,23 @@ void floating_enable(Con *con, bool automatic) {
     /* We insert nc already, even though its rect is not yet calculated. This
      * is necessary because otherwise the workspace might be empty (and get
      * closed in tree_close_internal()) even though it’s not. */
-    if (set_focus) {
-        TAILQ_INSERT_TAIL(&(ws->floating_head), nc, floating_windows);
+    TAILQ_INSERT_HEAD(&(ws->floating_head), nc, floating_windows);
+
+    struct focus_head *fh = &(ws->focus_head);
+    if (focus_before_parent) {
+        if (focus_head_placeholder) {
+            TAILQ_INSERT_AFTER(fh, focus_head_placeholder, nc, focused);
+        } else {
+            TAILQ_INSERT_HEAD(fh, nc, focused);
+        }
     } else {
-        TAILQ_INSERT_HEAD(&(ws->floating_head), nc, floating_windows);
+        if (focus_head_placeholder) {
+            TAILQ_INSERT_BEFORE(focus_head_placeholder, nc, focused);
+        } else {
+            /* Also used for the set_focus case */
+            TAILQ_INSERT_TAIL(fh, nc, focused);
+        }
     }
-    TAILQ_INSERT_TAIL(&(ws->focus_head), nc, focused);
 
     /* check if the parent container is empty and close it if so */
     if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) &&
@@ -210,7 +309,7 @@ void floating_enable(Con *con, bool automatic) {
         Con *parent = con->parent;
         /* clear the pointer before calling tree_close_internal in which the memory is freed */
         con->parent = NULL;
-        tree_close_internal(parent, DONT_KILL_WINDOW, false, false);
+        tree_close_internal(parent, DONT_KILL_WINDOW, false);
     }
 
     char *name;
@@ -265,7 +364,7 @@ void floating_enable(Con *con, bool automatic) {
     nc->rect.height += con->border_width * 2;
     nc->rect.width += con->border_width * 2;
 
-    floating_check_size(nc);
+    floating_check_size(nc, false);
 
     /* Some clients (like GIMP’s color picker window) get mapped
      * to (0, 0), so we push them to a reasonable position
@@ -284,10 +383,7 @@ void floating_enable(Con *con, bool automatic) {
 
     /* Sanity check: Are the coordinates on the appropriate output? If not, we
      * need to change them */
-    Output *current_output = get_output_containing(nc->rect.x +
-                                                       (nc->rect.width / 2),
-                                                   nc->rect.y + (nc->rect.height / 2));
-
+    Output *current_output = get_output_from_rect(nc->rect);
     Con *correct_output = con_get_output(ws);
     if (!current_output || current_output->con != correct_output) {
         DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n",
@@ -295,11 +391,13 @@ void floating_enable(Con *con, bool automatic) {
 
         /* If moving from one output to another, keep the relative position
          * consistent (e.g. a centered dialog will remain centered). */
-        if (current_output)
+        if (current_output) {
             floating_fix_coordinates(nc, &current_output->con->rect, &correct_output->rect);
-        else {
-            nc->rect.x = correct_output->rect.x;
-            nc->rect.y = correct_output->rect.y;
+            /* Make sure that the result is in the correct output. */
+            current_output = get_output_from_rect(nc->rect);
+        }
+        if (!current_output || current_output->con != correct_output) {
+            floating_center(nc, ws->rect);
         }
     }
 
@@ -314,27 +412,11 @@ void floating_enable(Con *con, bool automatic) {
     DLOG("Corrected y = %d (deco_height = %d)\n", nc->rect.y, deco_height);
 
     /* render the cons to get initial window_rect correct */
-    render_con(nc, false);
-    render_con(con, false);
+    render_con(nc);
 
     if (set_focus)
-        con_focus(con);
-
-    /* Check if we need to re-assign it to a different workspace because of its
-     * coordinates and exit if that was done successfully. */
-    if (floating_maybe_reassign_ws(nc)) {
-        goto done;
-    }
-
-    /* Sanitize coordinates: Check if they are on any output */
-    if (get_output_containing(nc->rect.x, nc->rect.y) != NULL) {
-        goto done;
-    }
-
-    ELOG("No output found at destination coordinates, centering floating window on current ws\n");
-    floating_center(nc, ws->rect);
+        con_activate(con);
 
-done:
     floating_set_hint_atom(nc, true);
     ipc_send_window_event("floating", con);
 }
@@ -345,45 +427,26 @@ void floating_disable(Con *con, bool automatic) {
         return;
     }
 
-    const bool set_focus = (con == focused);
-
     Con *ws = con_get_workspace(con);
-    Con *parent = con->parent;
-
-    /* 1: detach from parent container */
-    TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
-    TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
-
-    /* 2: kill parent container */
-    TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
-    TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
-    /* clear the pointer before calling tree_close_internal in which the memory is freed */
-    con->parent = NULL;
-    tree_close_internal(parent, DONT_KILL_WINDOW, true, false);
-
-    /* 3: re-attach to the parent of the currently focused con on the workspace
-     * this floating con was on */
-    Con *focused = con_descend_tiling_focused(ws);
-
-    /* if there is no other container on this workspace, focused will be the
-     * workspace itself */
-    if (focused->type == CT_WORKSPACE)
-        con->parent = focused;
-    else
-        con->parent = focused->parent;
+    if (con_is_internal(ws)) {
+        LOG("Can't disable floating for container in internal workspace.\n");
+        return;
+    }
+    Con *tiling_focused = con_descend_tiling_focused(ws);
 
-    /* con_fix_percent will adjust the percent value */
-    con->percent = 0.0;
+    if (tiling_focused->type == CT_WORKSPACE) {
+        Con *parent = con->parent;
+        con_detach(con);
+        con->parent = NULL;
+        tree_close_internal(parent, DONT_KILL_WINDOW, true);
+        con_attach(con, tiling_focused, false);
+        con->percent = 0.0;
+        con_fix_percent(con->parent);
+    } else {
+        insert_con_into(con, tiling_focused, AFTER);
+    }
 
     con->floating = FLOATING_USER_OFF;
-
-    con_attach(con, con->parent, false);
-
-    con_fix_percent(con->parent);
-
-    if (set_focus)
-        con_focus(con);
-
     floating_set_hint_atom(con, false);
     ipc_send_window_event("floating", con);
 }
@@ -429,9 +492,7 @@ void floating_raise_con(Con *con) {
  *
  */
 bool floating_maybe_reassign_ws(Con *con) {
-    Output *output = get_output_containing(
-        con->rect.x + (con->rect.width / 2),
-        con->rect.y + (con->rect.height / 2));
+    Output *output = get_output_from_rect(con->rect);
 
     if (!output) {
         ELOG("No output found at destination coordinates?\n");
@@ -449,7 +510,8 @@ bool floating_maybe_reassign_ws(Con *con) {
     Con *ws = TAILQ_FIRST(&(content->focus_head));
     DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
     con_move_to_workspace(con, ws, false, true, false);
-    con_focus(con_descend_focused(con));
+    workspace_show(ws);
+    con_activate(con_descend_focused(con));
     return true;
 }
 
@@ -505,7 +567,7 @@ DRAGGING_CB(drag_window_callback) {
     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);
+    render_con(con);
     x_push_node(con);
     xcb_flush(conn);
 
@@ -541,8 +603,10 @@ void floating_drag_window(Con *con, const xcb_button_press_event_t *event) {
     }
 
     /* If the user cancelled, undo the changes. */
-    if (drag_result == DRAG_REVERT)
+    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)
@@ -597,7 +661,7 @@ DRAGGING_CB(resize_window_callback) {
     con->rect = (Rect){dest_x, dest_y, dest_width, dest_height};
 
     /* Obey window size */
-    floating_check_size(con);
+    floating_check_size(con, false);
 
     /* If not the lower right corner is grabbed, we must also reposition
      * the client by exactly the amount we resized it */
@@ -610,9 +674,7 @@ DRAGGING_CB(resize_window_callback) {
     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();
+    render_con(con);
     x_push_changes(croot);
 }
 
@@ -686,8 +748,7 @@ struct drag_x11_cb {
     const void *extra;
 };
 
-static void xcb_drag_prepare_cb(EV_P_ ev_prepare *w, int revents) {
-    struct drag_x11_cb *dragloop = (struct drag_x11_cb *)w->data;
+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;
 
@@ -746,12 +807,21 @@ static void xcb_drag_prepare_cb(EV_P_ ev_prepare *w, int revents) {
         if (last_motion_notify != (xcb_motion_notify_event_t *)event)
             free(event);
 
-        if (dragloop->result != DRAGGING)
-            return;
+        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;
+    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
@@ -764,9 +834,17 @@ static void xcb_drag_prepare_cb(EV_P_ ev_prepare *w, int revents) {
             last_motion_notify->root_y,
             dragloop->extra);
     }
-    free(last_motion_notify);
+    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 */
+    }
 }
 
 /*
@@ -777,8 +855,7 @@ static void xcb_drag_prepare_cb(EV_P_ ev_prepare *w, int revents) {
  * 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,
+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;
 
@@ -841,8 +918,7 @@ drag_result_t drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_
     main_set_x11_cb(false);
     ev_prepare_start(main_loop, prepare);
 
-    while (loop.result == DRAGGING)
-        ev_run(main_loop, EVRUN_ONCE);
+    ev_loop(main_loop, 0);
 
     ev_prepare_stop(main_loop, prepare);
     main_set_x11_cb(true);
@@ -861,23 +937,28 @@ drag_result_t drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_
  * outputs.
  *
  */
-void floating_reposition(Con *con, Rect newrect) {
+bool floating_reposition(Con *con, Rect newrect) {
     /* Sanity check: Are the new coordinates on any output? If not, we
      * ignore that request. */
-    if (!contained_by_output(newrect)) {
+    if (!output_containing_rect(newrect)) {
         ELOG("No output found at destination coordinates. Not repositioning.\n");
-        return;
+        return false;
     }
 
     con->rect = newrect;
 
-    floating_maybe_reassign_ws(con);
+    bool reassigned = 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();
+    /* Workspace change will already result in a tree_render. */
+    if (!reassigned) {
+        render_con(con);
+        x_push_node(con);
+    }
+    return true;
 }
 
 /*
@@ -887,7 +968,7 @@ void floating_reposition(Con *con, Rect newrect) {
  * window's size hints.
  *
  */
-void floating_resize(Con *floating_con, int x, int y) {
+void floating_resize(Con *floating_con, uint32_t x, uint32_t y) {
     DLOG("floating resize to %dx%d px\n", x, y);
     Rect *rect = &floating_con->rect;
     Con *focused_con = con_descend_focused(floating_con);
@@ -897,6 +978,7 @@ void floating_resize(Con *floating_con, int x, int y) {
     }
     int wi = focused_con->window->width_increment;
     int hi = focused_con->window->height_increment;
+    bool prefer_height = (rect->width == x);
     rect->width = x;
     rect->height = y;
     if (wi)
@@ -904,7 +986,7 @@ void floating_resize(Con *floating_con, int x, int y) {
     if (hi)
         rect->height += (hi - 1 - rect->height) % hi;
 
-    floating_check_size(floating_con);
+    floating_check_size(floating_con, prefer_height);
 
     /* If this is a scratchpad window, don't auto center it from now on. */
     if (floating_con->scratchpad_state == SCRATCHPAD_FRESH)