+#undef I3__FILE__
+#define I3__FILE__ "render.c"
/*
* vim:ts=4:sw=4:expandtab
+ *
+ * i3 - an improved dynamic tiling window manager
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
+ *
+ * render.c: Renders (determines position/sizes) the layout tree, updating the
+ * various rects. Needs to be pushed to X11 (see x.c) to be visible.
+ *
*/
-
#include "all.h"
/* change this to 'true' if you want to have additional borders around every
* container (for debugging purposes) */
static bool show_debug_borders = false;
+/*
+ * Returns the height for the decorations
+ */
+int render_deco_height(void) {
+ int deco_height = config.font.height + 4;
+ if (config.font.height & 0x01)
+ ++deco_height;
+ return deco_height;
+}
+
+/*
+ * Renders a container with layout L_OUTPUT. In this layout, all CT_DOCKAREAs
+ * get the height of their content and the remaining CT_CON gets the rest.
+ *
+ */
+static void render_l_output(Con *con) {
+ Con *child, *dockchild;
+
+ int x = con->rect.x;
+ int y = con->rect.y;
+ int height = con->rect.height;
+
+ /* Find the content container and ensure that there is exactly one. Also
+ * check for any non-CT_DOCKAREA clients. */
+ Con *content = NULL;
+ TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
+ if (child->type == CT_CON) {
+ if (content != NULL) {
+ DLOG("More than one CT_CON on output container\n");
+ assert(false);
+ }
+ content = child;
+ } else if (child->type != CT_DOCKAREA) {
+ DLOG("Child %p of type %d is inside the OUTPUT con\n", child, child->type);
+ assert(false);
+ }
+ }
+
+ if (content == NULL) {
+ DLOG("Skipping this output because it is currently being destroyed.\n");
+ return;
+ }
+
+ /* We need to find out if there is a fullscreen con on the current workspace
+ * and take the short-cut to render it directly (the user does not want to
+ * see the dockareas in that case) */
+ Con *ws = con_get_fullscreen_con(content, CF_OUTPUT);
+ if (!ws) {
+ DLOG("Skipping this output because it is currently being destroyed.\n");
+ return;
+ }
+ Con *fullscreen = con_get_fullscreen_con(ws, CF_OUTPUT);
+ if (fullscreen) {
+ fullscreen->rect = con->rect;
+ x_raise_con(fullscreen);
+ render_con(fullscreen, true);
+ return;
+ }
+
+ /* First pass: determine the height of all CT_DOCKAREAs (the sum of their
+ * children) and figure out how many pixels we have left for the rest */
+ TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
+ if (child->type != CT_DOCKAREA)
+ continue;
+
+ child->rect.height = 0;
+ TAILQ_FOREACH(dockchild, &(child->nodes_head), nodes)
+ child->rect.height += dockchild->geometry.height;
+
+ height -= child->rect.height;
+ }
+
+ /* Second pass: Set the widths/heights */
+ TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
+ if (child->type == CT_CON) {
+ child->rect.x = x;
+ child->rect.y = y;
+ child->rect.width = con->rect.width;
+ child->rect.height = height;
+ }
+
+ child->rect.x = x;
+ child->rect.y = y;
+ child->rect.width = con->rect.width;
+
+ child->deco_rect.x = 0;
+ child->deco_rect.y = 0;
+ child->deco_rect.width = 0;
+ child->deco_rect.height = 0;
+
+ y += child->rect.height;
+
+ DLOG("child at (%d, %d) with (%d x %d)\n",
+ child->rect.x, child->rect.y, child->rect.width, child->rect.height);
+ x_raise_con(child);
+ render_con(child, false);
+ }
+}
+
/*
* "Renders" the given container (and its children), meaning that all rects are
* updated correctly. Note that this function does not call any xcb_*
*
*/
void render_con(Con *con, bool render_fullscreen) {
- DLOG("currently rendering node %p / %s / layout %d\n",
- con, con->name, con->layout);
int children = con_num_children(con);
- DLOG("children: %d, orientation = %d\n", children, con->orientation);
+ DLOG("Rendering %snode %p / %s / layout %d / children %d\n",
+ (render_fullscreen ? "fullscreen " : ""), con, con->name, con->layout,
+ children);
/* Copy container rect, subtract container border */
/* This is the actually usable space inside this container for clients */
inset->width -= (2 * con->border_width);
inset->height -= (2 * con->border_width);
- /* Obey the aspect ratio, if any */
- if (con->proportional_height != 0 &&
- con->proportional_width != 0) {
- DLOG("proportional height = %d, width = %d\n", con->proportional_height, con->proportional_width);
+ /* 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:
+ * http://mail.gnome.org/archives/wm-spec-list/2003-May/msg00007.html
+ *
+ * Ignoring aspect ratio during fullscreen was necessary to fix MPlayer
+ * subtitle rendering, see http://bugs.i3wm.org/594 */
+ if (!render_fullscreen &&
+ con->aspect_ratio > 0.0) {
+ DLOG("aspect_ratio = %f, current width/height are %d/%d\n",
+ con->aspect_ratio, inset->width, inset->height);
double new_height = inset->height + 1;
int new_width = inset->width;
while (new_height > inset->height) {
- new_height = ((double)con->proportional_height / con->proportional_width) * new_width;
+ new_height = (1.0 / con->aspect_ratio) * new_width;
if (new_height > inset->height)
new_width--;
}
/* Center the window */
- inset->y += ceil(inset->height / 2) - floor(new_height / 2);
+ inset->y += ceil(inset->height / 2) - floor((new_height + .5) / 2);
inset->x += ceil(inset->width / 2) - floor(new_width / 2);
- inset->height = new_height;
+ inset->height = new_height + .5;
inset->width = new_width;
- DLOG("new_height = %f, new_width = %d\n", new_height, new_width);
}
- if (con->height_increment > 1) {
- int old_height = inset->height;
- inset->height -= (inset->height - con->base_height) % con->height_increment;
- DLOG("Lost %d pixel due to client's height_increment (%d px, base_height = %d)\n",
- old_height - inset->height, con->height_increment, con->base_height);
- }
-
- if (con->width_increment > 1) {
- int old_width = inset->width;
- inset->width -= (inset->width - con->base_width) % con->width_increment;
- DLOG("Lost %d pixel due to client's width_increment (%d px, base_width = %d)\n",
- old_width - inset->width, con->width_increment, con->base_width);
- }
+ /* NB: We used to respect resize increment size hints for tiling
+ * windows up until commit 0db93d9 here. However, since all terminal
+ * emulators cope with ignoring the size hints in a better way than we
+ * can (by providing their fake-transparency or background color), this
+ * code was removed. See also http://bugs.i3wm.org/540 */
DLOG("child will be at %dx%d with size %dx%d\n", inset->x, inset->y, inset->width, inset->height);
}
/* Check for fullscreen nodes */
- Con *fullscreen = con_get_fullscreen_con(con);
+ Con *fullscreen = NULL;
+ if (con->type != CT_OUTPUT) {
+ fullscreen = con_get_fullscreen_con(con, (con->type == CT_ROOT ? CF_GLOBAL : CF_OUTPUT));
+ }
if (fullscreen) {
- DLOG("got fs node: %p\n", fullscreen);
fullscreen->rect = rect;
x_raise_con(fullscreen);
render_con(fullscreen, true);
- return;
+ /* Fullscreen containers are either global (underneath the CT_ROOT
+ * container) or per-output (underneath the CT_CONTENT container). For
+ * global fullscreen containers, we cannot abort rendering here yet,
+ * because the floating windows (with popup_during_fullscreen smart)
+ * have not yet been rendered (see the CT_ROOT code path below). See
+ * also http://bugs.i3wm.org/1393 */
+ if (con->type != CT_ROOT) {
+ return;
+ }
}
/* find the height for the decorations */
- i3Font *font = load_font(conn, config.font);
- int deco_height = font->height + 5;
+ int deco_height = render_deco_height();
/* precalculate the sizes to be able to correct rounding errors */
int sizes[children];
- if (con->layout == L_DEFAULT && children > 0) {
+ memset(sizes, 0, children * sizeof(int));
+ if ((con->layout == L_SPLITH || con->layout == L_SPLITV) && children > 0) {
+ assert(!TAILQ_EMPTY(&con->nodes_head));
Con *child;
int i = 0, assigned = 0;
- int total = con->orientation == HORIZ ? rect.width : rect.height;
+ int total = con_orientation(con) == HORIZ ? rect.width : rect.height;
TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
double percentage = child->percent > 0.0 ? child->percent : 1.0 / children;
assigned += sizes[i++] = percentage * total;
}
+ assert(assigned == total ||
+ (assigned > total && assigned - total <= children * 2) ||
+ (assigned < total && total - assigned <= children * 2));
int signal = assigned < total ? 1 : -1;
while (assigned != total) {
- for (i = 0; i < children && assigned < total; ++i) {
+ for (i = 0; i < children && assigned != total; ++i) {
sizes[i] += signal;
assigned += signal;
}
}
}
- Con *child;
- TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
+ if (con->layout == L_OUTPUT) {
+ /* Skip i3-internal outputs */
+ if (con_is_internal(con))
+ return;
+ render_l_output(con);
+ } else if (con->type == CT_ROOT) {
+ Con *output;
+ if (!fullscreen) {
+ TAILQ_FOREACH(output, &(con->nodes_head), nodes) {
+ render_con(output, false);
+ }
+ }
- /* default layout */
- if (con->layout == L_DEFAULT) {
- if (con->orientation == HORIZ) {
- child->rect.x = x;
- child->rect.y = y;
- child->rect.width = sizes[i];
- child->rect.height = rect.height;
- x += child->rect.width;
- } else {
- child->rect.x = x;
- child->rect.y = y;
- child->rect.width = rect.width;
- child->rect.height = sizes[i];
- y += child->rect.height;
+ /* We need to render floating windows after rendering all outputs’
+ * tiling windows because they need to be on top of *every* output at
+ * all times. This is important when the user places floating
+ * windows/containers so that they overlap on another output. */
+ DLOG("Rendering floating windows:\n");
+ TAILQ_FOREACH(output, &(con->nodes_head), nodes) {
+ if (con_is_internal(output))
+ continue;
+ /* Get the active workspace of that output */
+ Con *content = output_get_content(output);
+ if (!content || TAILQ_EMPTY(&(content->focus_head))) {
+ DLOG("Skipping this output because it is currently being destroyed.\n");
+ continue;
}
+ Con *workspace = TAILQ_FIRST(&(content->focus_head));
+ Con *fullscreen = con_get_fullscreen_con(workspace, CF_OUTPUT);
+ Con *child;
+ TAILQ_FOREACH(child, &(workspace->floating_head), floating_windows) {
+ /* Don’t render floating windows when there is a fullscreen window
+ * on that workspace. Necessary to make floating fullscreen work
+ * correctly (ticket #564). */
+ /* If there is no fullscreen->window, this cannot be a
+ * transient window, so we _know_ we need to skip it. This
+ * happens during restarts where the container already exists,
+ * but the window was not yet associated. */
+ if (fullscreen != NULL && fullscreen->window == NULL)
+ continue;
+ if (fullscreen != NULL && fullscreen->window != NULL) {
+ Con *floating_child = con_descend_focused(child);
+ Con *transient_con = floating_child;
+ bool is_transient_for = false;
+ /* Exception to the above rule: smart
+ * popup_during_fullscreen handling (popups belonging to
+ * the fullscreen app will be rendered). */
+ while (transient_con != NULL &&
+ transient_con->window != NULL &&
+ transient_con->window->transient_for != XCB_NONE) {
+ DLOG("transient_con = 0x%08x, transient_con->window->transient_for = 0x%08x, fullscreen_id = 0x%08x\n",
+ transient_con->window->id, transient_con->window->transient_for, fullscreen->window->id);
+ if (transient_con->window->transient_for == fullscreen->window->id) {
+ is_transient_for = true;
+ break;
+ }
+ Con *next_transient = con_by_window_id(transient_con->window->transient_for);
+ if (next_transient == NULL)
+ break;
+ /* Some clients (e.g. x11-ssh-askpass) actually set
+ * WM_TRANSIENT_FOR to their own window id, so break instead of
+ * looping endlessly. */
+ if (transient_con == next_transient)
+ break;
+ transient_con = next_transient;
+ }
+
+ if (!is_transient_for)
+ continue;
+ else {
+ DLOG("Rendering floating child even though in fullscreen mode: "
+ "floating->transient_for (0x%08x) --> fullscreen->id (0x%08x)\n",
+ floating_child->window->transient_for, fullscreen->window->id);
+ }
+ }
+ DLOG("floating child at (%d,%d) with %d x %d\n",
+ child->rect.x, child->rect.y, child->rect.width, child->rect.height);
+ x_raise_con(child);
+ render_con(child, false);
+ }
+ }
- /* first we have the decoration, if this is a leaf node */
- if (con_is_leaf(child) && child->border_style == BS_NORMAL) {
- DLOG("that child is a leaf node, subtracting deco\n");
- /* TODO: make a function for relative coords? */
- child->deco_rect.x = child->rect.x - con->rect.x;
- child->deco_rect.y = child->rect.y - con->rect.y;
+ } else {
+ /* FIXME: refactor this into separate functions: */
+ Con *child;
+ TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
+ assert(children > 0);
+
+ /* default layout */
+ if (con->layout == L_SPLITH || con->layout == L_SPLITV) {
+ if (con->layout == L_SPLITH) {
+ child->rect.x = x;
+ child->rect.y = y;
+ child->rect.width = sizes[i];
+ child->rect.height = rect.height;
+ x += child->rect.width;
+ } else {
+ child->rect.x = x;
+ child->rect.y = y;
+ child->rect.width = rect.width;
+ child->rect.height = sizes[i];
+ y += child->rect.height;
+ }
+
+ /* first we have the decoration, if this is a leaf node */
+ if (con_is_leaf(child)) {
+ if (child->border_style == BS_NORMAL) {
+ /* TODO: make a function for relative coords? */
+ child->deco_rect.x = child->rect.x - con->rect.x;
+ child->deco_rect.y = child->rect.y - con->rect.y;
+
+ child->rect.y += deco_height;
+ child->rect.height -= deco_height;
+
+ child->deco_rect.width = child->rect.width;
+ child->deco_rect.height = deco_height;
+ } else {
+ child->deco_rect.x = 0;
+ child->deco_rect.y = 0;
+ child->deco_rect.width = 0;
+ child->deco_rect.height = 0;
+ }
+ }
+ }
- child->rect.y += deco_height;
- child->rect.height -= deco_height;
+ /* stacked layout */
+ else if (con->layout == L_STACKED) {
+ child->rect.x = x;
+ child->rect.y = y;
+ child->rect.width = rect.width;
+ child->rect.height = rect.height;
+ child->deco_rect.x = x - con->rect.x;
+ child->deco_rect.y = y - con->rect.y + (i * deco_height);
child->deco_rect.width = child->rect.width;
child->deco_rect.height = deco_height;
- }
- }
- /* stacked layout */
- else if (con->layout == L_STACKED) {
- DLOG("stacked con\n");
- child->rect.x = x;
- child->rect.y = y;
- child->rect.width = rect.width;
- child->rect.height = rect.height;
+ if (children > 1 || (child->border_style != BS_PIXEL && child->border_style != BS_NONE)) {
+ child->rect.y += (deco_height * children);
+ child->rect.height -= (deco_height * children);
+ }
+ }
- child->deco_rect.x = x - con->rect.x;
- child->deco_rect.y = y - con->rect.y + (i * deco_height);
- child->deco_rect.width = child->rect.width;
- child->deco_rect.height = deco_height;
+ /* tabbed layout */
+ else if (con->layout == L_TABBED) {
+ child->rect.x = x;
+ child->rect.y = y;
+ child->rect.width = rect.width;
+ child->rect.height = rect.height;
- if (children > 1 || (child->border_style != BS_1PIXEL && child->border_style != BS_NONE)) {
- child->rect.y += (deco_height * children);
- child->rect.height -= (deco_height * children);
+ child->deco_rect.width = floor((float)child->rect.width / children);
+ child->deco_rect.x = x - con->rect.x + i * child->deco_rect.width;
+ child->deco_rect.y = y - con->rect.y;
+
+ /* Since the tab width may be something like 31,6 px per tab, we
+ * let the last tab have all the extra space (0,6 * children). */
+ if (i == (children - 1)) {
+ child->deco_rect.width += (child->rect.width - (child->deco_rect.x + child->deco_rect.width));
+ }
+
+ if (children > 1 || (child->border_style != BS_PIXEL && child->border_style != BS_NONE)) {
+ child->rect.y += deco_height;
+ child->rect.height -= deco_height;
+ child->deco_rect.height = deco_height;
+ } else {
+ child->deco_rect.height = (child->border_style == BS_PIXEL ? 1 : 0);
+ }
}
- }
- /* tabbed layout */
- else if (con->layout == L_TABBED) {
- DLOG("tabbed con\n");
- child->rect.x = x;
- child->rect.y = y;
- child->rect.width = rect.width;
- child->rect.height = rect.height;
-
- child->deco_rect.width = child->rect.width / children;
- child->deco_rect.height = deco_height;
- child->deco_rect.x = x - con->rect.x + i * child->deco_rect.width;
- child->deco_rect.y = y - con->rect.y;
+ /* dockarea layout */
+ else if (con->layout == L_DOCKAREA) {
+ child->rect.x = x;
+ child->rect.y = y;
+ child->rect.width = rect.width;
+ child->rect.height = child->geometry.height;
- if (children > 1 || (child->border_style != BS_1PIXEL && child->border_style != BS_NONE)) {
- child->rect.y += deco_height;
- child->rect.height -= deco_height;
+ child->deco_rect.x = 0;
+ child->deco_rect.y = 0;
+ child->deco_rect.width = 0;
+ child->deco_rect.height = 0;
+ y += child->rect.height;
}
+
+ DLOG("child at (%d, %d) with (%d x %d)\n",
+ child->rect.x, child->rect.y, child->rect.width, child->rect.height);
+ x_raise_con(child);
+ render_con(child, false);
+ i++;
}
- DLOG("child at (%d, %d) with (%d x %d)\n",
- child->rect.x, child->rect.y, child->rect.width, child->rect.height);
- DLOG("x now %d, y now %d\n", x, y);
- x_raise_con(child);
- render_con(child, false);
- i++;
- }
+ /* in a stacking or tabbed container, we ensure the focused client is raised */
+ if (con->layout == L_STACKED || con->layout == L_TABBED) {
+ TAILQ_FOREACH_REVERSE(child, &(con->focus_head), focus_head, focused)
+ x_raise_con(child);
+ if ((child = TAILQ_FIRST(&(con->focus_head)))) {
+ /* By rendering the stacked container again, we handle the case
+ * that we have a non-leaf-container inside the stack. In that
+ * case, the children of the non-leaf-container need to be raised
+ * aswell. */
+ render_con(child, false);
+ }
- /* in a stacking or tabbed container, we ensure the focused client is raised */
- if (con->layout == L_STACKED || con->layout == L_TABBED) {
- Con *foc = TAILQ_FIRST(&(con->focus_head));
- if (foc != TAILQ_END(&(con->focus_head))) {
- DLOG("con %p is stacking, raising %p\n", con, foc);
- x_raise_con(foc);
- /* by rendering the stacked container again, we handle the case
- * that we have a non-leaf-container inside the stack. */
- render_con(foc, false);
+ if (children != 1)
+ /* Raise the stack con itself. This will put the stack decoration on
+ * top of every stack window. That way, when a new window is opened in
+ * the stack, the old window will not obscure part of the decoration
+ * (it’s unmapped afterwards). */
+ x_raise_con(con);
}
}
-
- TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
- DLOG("render floating:\n");
- DLOG("floating child at (%d,%d) with %d x %d\n", child->rect.x, child->rect.y, child->rect.width, child->rect.height);
- x_raise_con(child);
- render_con(child, false);
- }
-
- DLOG("-- level up\n");
}
projects / i3 / i3 / blobdiff