Move rendering the root node into a separate function.
This commit is contained in:
Ingo Bürk
parent
a194cab523
commit
bb5be480e7
536
src/render.c
536
src/render.c
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@ -14,6 +14,8 @@
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/* Forward declarations */
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static int *precalculate_sizes(Con *con, render_params *p);
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static void render_root(Con *con, Con *fullscreen);
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static void render_output(Con *con);
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static void render_con_split(Con *con, Con *child, render_params *p, int i);
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static void render_con_stacked(Con *con, Con *child, render_params *p, int i);
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static void render_con_tabbed(Con *con, Con *child, render_params *p, int i);
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@ -33,12 +35,279 @@ int render_deco_height(void) {
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return deco_height;
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}
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/*
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* "Renders" the given container (and its children), meaning that all rects are
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* updated correctly. Note that this function does not call any xcb_*
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* functions, so the changes are completely done in memory only (and
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* side-effect free). As soon as you call x_push_changes(), the changes will be
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* updated in X11.
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*
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*/
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void render_con(Con *con, bool render_fullscreen) {
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render_params params = {
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.rect = con->rect,
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.x = con->rect.x,
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.y = con->rect.y,
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.children = con_num_children(con)};
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DLOG("Rendering %snode %p / %s / layout %d / children %d\n",
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(render_fullscreen ? "fullscreen " : ""), con, con->name, con->layout,
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params.children);
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/* Display a border if this is a leaf node. For container nodes, we don’t
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* draw borders (except when in debug mode) */
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if (show_debug_borders) {
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params.rect.x += 2;
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params.rect.y += 2;
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params.rect.width -= 2 * 2;
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params.rect.height -= 2 * 2;
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}
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int i = 0;
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con->mapped = true;
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/* if this container contains a window, set the coordinates */
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if (con->window) {
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/* depending on the border style, the rect of the child window
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* needs to be smaller */
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Rect *inset = &(con->window_rect);
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*inset = (Rect){0, 0, con->rect.width, con->rect.height};
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if (!render_fullscreen)
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*inset = rect_add(*inset, con_border_style_rect(con));
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/* Obey x11 border */
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inset->width -= (2 * con->border_width);
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inset->height -= (2 * con->border_width);
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/* Obey the aspect ratio, if any, unless we are in fullscreen mode.
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*
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* The spec isn’t explicit on whether the aspect ratio hints should be
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* respected during fullscreen mode. Other WMs such as Openbox don’t do
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* that, and this post suggests that this is the correct way to do it:
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* http://mail.gnome.org/archives/wm-spec-list/2003-May/msg00007.html
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*
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* Ignoring aspect ratio during fullscreen was necessary to fix MPlayer
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* subtitle rendering, see http://bugs.i3wm.org/594 */
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if (!render_fullscreen && con->window->aspect_ratio > 0.0) {
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DLOG("aspect_ratio = %f, current width/height are %d/%d\n",
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con->window->aspect_ratio, inset->width, inset->height);
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double new_height = inset->height + 1;
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int new_width = inset->width;
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while (new_height > inset->height) {
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new_height = (1.0 / con->window->aspect_ratio) * new_width;
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if (new_height > inset->height)
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new_width--;
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}
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/* Center the window */
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inset->y += ceil(inset->height / 2) - floor((new_height + .5) / 2);
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inset->x += ceil(inset->width / 2) - floor(new_width / 2);
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inset->height = new_height + .5;
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inset->width = new_width;
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}
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/* NB: We used to respect resize increment size hints for tiling
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* windows up until commit 0db93d9 here. However, since all terminal
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* emulators cope with ignoring the size hints in a better way than we
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* can (by providing their fake-transparency or background color), this
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* code was removed. See also http://bugs.i3wm.org/540 */
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DLOG("child will be at %dx%d with size %dx%d\n", inset->x, inset->y, inset->width, inset->height);
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}
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/* Check for fullscreen nodes */
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Con *fullscreen = NULL;
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if (con->type != CT_OUTPUT) {
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fullscreen = con_get_fullscreen_con(con, (con->type == CT_ROOT ? CF_GLOBAL : CF_OUTPUT));
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}
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if (fullscreen) {
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fullscreen->rect = params.rect;
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x_raise_con(fullscreen);
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render_con(fullscreen, true);
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/* Fullscreen containers are either global (underneath the CT_ROOT
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* container) or per-output (underneath the CT_CONTENT container). For
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* global fullscreen containers, we cannot abort rendering here yet,
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* because the floating windows (with popup_during_fullscreen smart)
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* have not yet been rendered (see the CT_ROOT code path below). See
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* also http://bugs.i3wm.org/1393 */
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if (con->type != CT_ROOT) {
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return;
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}
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}
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/* find the height for the decorations */
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params.deco_height = render_deco_height();
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/* precalculate the sizes to be able to correct rounding errors */
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params.sizes = precalculate_sizes(con, ¶ms);
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if (con->layout == L_OUTPUT) {
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/* Skip i3-internal outputs */
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if (con_is_internal(con))
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goto free_params;
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render_output(con);
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} else if (con->type == CT_ROOT) {
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render_root(con, fullscreen);
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} else {
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Con *child;
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TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
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assert(params.children > 0);
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if (con->layout == L_SPLITH || con->layout == L_SPLITV) {
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render_con_split(con, child, ¶ms, i);
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} else if (con->layout == L_STACKED) {
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render_con_stacked(con, child, ¶ms, i);
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} else if (con->layout == L_TABBED) {
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render_con_tabbed(con, child, ¶ms, i);
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} else if (con->layout == L_DOCKAREA) {
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render_con_dockarea(con, child, ¶ms);
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}
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DLOG("child at (%d, %d) with (%d x %d)\n",
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child->rect.x, child->rect.y, child->rect.width, child->rect.height);
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x_raise_con(child);
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render_con(child, false);
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i++;
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}
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/* in a stacking or tabbed container, we ensure the focused client is raised */
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if (con->layout == L_STACKED || con->layout == L_TABBED) {
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TAILQ_FOREACH_REVERSE(child, &(con->focus_head), focus_head, focused)
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x_raise_con(child);
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if ((child = TAILQ_FIRST(&(con->focus_head)))) {
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/* By rendering the stacked container again, we handle the case
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* that we have a non-leaf-container inside the stack. In that
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* case, the children of the non-leaf-container need to be raised
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* aswell. */
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render_con(child, false);
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}
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if (params.children != 1)
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/* Raise the stack con itself. This will put the stack decoration on
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* top of every stack window. That way, when a new window is opened in
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* the stack, the old window will not obscure part of the decoration
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* (it’s unmapped afterwards). */
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x_raise_con(con);
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}
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}
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free_params:
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FREE(params.sizes);
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}
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static int *precalculate_sizes(Con *con, render_params *p) {
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int *sizes = smalloc(p->children * sizeof(int));
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if ((con->layout == L_SPLITH || con->layout == L_SPLITV) && p->children > 0) {
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assert(!TAILQ_EMPTY(&con->nodes_head));
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Con *child;
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int i = 0, assigned = 0;
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int total = con_orientation(con) == HORIZ ? p->rect.width : p->rect.height;
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TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
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double percentage = child->percent > 0.0 ? child->percent : 1.0 / p->children;
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assigned += sizes[i++] = percentage * total;
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}
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assert(assigned == total ||
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(assigned > total && assigned - total <= p->children * 2) ||
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(assigned < total && total - assigned <= p->children * 2));
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int signal = assigned < total ? 1 : -1;
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while (assigned != total) {
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for (i = 0; i < p->children && assigned != total; ++i) {
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sizes[i] += signal;
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assigned += signal;
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}
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}
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}
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return sizes;
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}
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static void render_root(Con *con, Con *fullscreen) {
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Con *output;
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if (!fullscreen) {
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TAILQ_FOREACH(output, &(con->nodes_head), nodes) {
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render_con(output, false);
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}
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}
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/* We need to render floating windows after rendering all outputs’
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* tiling windows because they need to be on top of *every* output at
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* all times. This is important when the user places floating
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* windows/containers so that they overlap on another output. */
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DLOG("Rendering floating windows:\n");
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TAILQ_FOREACH(output, &(con->nodes_head), nodes) {
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if (con_is_internal(output))
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continue;
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/* Get the active workspace of that output */
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Con *content = output_get_content(output);
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if (!content || TAILQ_EMPTY(&(content->focus_head))) {
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DLOG("Skipping this output because it is currently being destroyed.\n");
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continue;
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}
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Con *workspace = TAILQ_FIRST(&(content->focus_head));
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Con *fullscreen = con_get_fullscreen_con(workspace, CF_OUTPUT);
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Con *child;
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TAILQ_FOREACH(child, &(workspace->floating_head), floating_windows) {
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/* Don’t render floating windows when there is a fullscreen window
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* on that workspace. Necessary to make floating fullscreen work
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* correctly (ticket #564). */
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/* If there is no fullscreen->window, this cannot be a
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* transient window, so we _know_ we need to skip it. This
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* happens during restarts where the container already exists,
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* but the window was not yet associated. */
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if (fullscreen != NULL && fullscreen->window == NULL)
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continue;
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if (fullscreen != NULL && fullscreen->window != NULL) {
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Con *floating_child = con_descend_focused(child);
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Con *transient_con = floating_child;
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bool is_transient_for = false;
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/* Exception to the above rule: smart
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* popup_during_fullscreen handling (popups belonging to
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* the fullscreen app will be rendered). */
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while (transient_con != NULL &&
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transient_con->window != NULL &&
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transient_con->window->transient_for != XCB_NONE) {
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DLOG("transient_con = 0x%08x, transient_con->window->transient_for = 0x%08x, fullscreen_id = 0x%08x\n",
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transient_con->window->id, transient_con->window->transient_for, fullscreen->window->id);
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if (transient_con->window->transient_for == fullscreen->window->id) {
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is_transient_for = true;
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break;
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}
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Con *next_transient = con_by_window_id(transient_con->window->transient_for);
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if (next_transient == NULL)
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break;
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/* Some clients (e.g. x11-ssh-askpass) actually set
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* WM_TRANSIENT_FOR to their own window id, so break instead of
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* looping endlessly. */
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if (transient_con == next_transient)
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break;
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transient_con = next_transient;
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}
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if (!is_transient_for)
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continue;
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else {
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DLOG("Rendering floating child even though in fullscreen mode: "
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"floating->transient_for (0x%08x) --> fullscreen->id (0x%08x)\n",
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floating_child->window->transient_for, fullscreen->window->id);
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}
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}
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DLOG("floating child at (%d,%d) with %d x %d\n",
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child->rect.x, child->rect.y, child->rect.width, child->rect.height);
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x_raise_con(child);
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render_con(child, false);
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}
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}
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}
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/*
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* Renders a container with layout L_OUTPUT. In this layout, all CT_DOCKAREAs
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* get the height of their content and the remaining CT_CON gets the rest.
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*
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*/
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static void render_l_output(Con *con) {
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static void render_output(Con *con) {
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Con *child, *dockchild;
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int x = con->rect.x;
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@ -122,271 +391,6 @@ static void render_l_output(Con *con) {
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}
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}
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/*
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* "Renders" the given container (and its children), meaning that all rects are
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* updated correctly. Note that this function does not call any xcb_*
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* functions, so the changes are completely done in memory only (and
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* side-effect free). As soon as you call x_push_changes(), the changes will be
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* updated in X11.
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*
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*/
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void render_con(Con *con, bool render_fullscreen) {
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render_params params = {
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.rect = con->rect,
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.x = con->rect.x,
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.y = con->rect.y,
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.children = con_num_children(con)};
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DLOG("Rendering %snode %p / %s / layout %d / children %d\n",
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(render_fullscreen ? "fullscreen " : ""), con, con->name, con->layout,
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params.children);
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/* Display a border if this is a leaf node. For container nodes, we don’t
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* draw borders (except when in debug mode) */
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if (show_debug_borders) {
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params.rect.x += 2;
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params.rect.y += 2;
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params.rect.width -= 2 * 2;
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params.rect.height -= 2 * 2;
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}
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int i = 0;
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con->mapped = true;
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/* if this container contains a window, set the coordinates */
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if (con->window) {
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/* depending on the border style, the rect of the child window
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* needs to be smaller */
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Rect *inset = &(con->window_rect);
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*inset = (Rect){0, 0, con->rect.width, con->rect.height};
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if (!render_fullscreen)
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*inset = rect_add(*inset, con_border_style_rect(con));
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/* Obey x11 border */
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inset->width -= (2 * con->border_width);
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inset->height -= (2 * con->border_width);
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/* Obey the aspect ratio, if any, unless we are in fullscreen mode.
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*
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* The spec isn’t explicit on whether the aspect ratio hints should be
|
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* respected during fullscreen mode. Other WMs such as Openbox don’t do
|
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* that, and this post suggests that this is the correct way to do it:
|
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* http://mail.gnome.org/archives/wm-spec-list/2003-May/msg00007.html
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*
|
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* Ignoring aspect ratio during fullscreen was necessary to fix MPlayer
|
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* subtitle rendering, see http://bugs.i3wm.org/594 */
|
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if (!render_fullscreen &&
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con->window->aspect_ratio > 0.0) {
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DLOG("aspect_ratio = %f, current width/height are %d/%d\n",
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con->window->aspect_ratio, inset->width, inset->height);
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double new_height = inset->height + 1;
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int new_width = inset->width;
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while (new_height > inset->height) {
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new_height = (1.0 / con->window->aspect_ratio) * new_width;
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if (new_height > inset->height)
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new_width--;
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}
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/* Center the window */
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inset->y += ceil(inset->height / 2) - floor((new_height + .5) / 2);
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inset->x += ceil(inset->width / 2) - floor(new_width / 2);
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inset->height = new_height + .5;
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inset->width = new_width;
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}
|
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|
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/* NB: We used to respect resize increment size hints for tiling
|
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* windows up until commit 0db93d9 here. However, since all terminal
|
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* 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 */
|
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|
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DLOG("child will be at %dx%d with size %dx%d\n", inset->x, inset->y, inset->width, inset->height);
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}
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/* Check for fullscreen nodes */
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Con *fullscreen = NULL;
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if (con->type != CT_OUTPUT) {
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fullscreen = con_get_fullscreen_con(con, (con->type == CT_ROOT ? CF_GLOBAL : CF_OUTPUT));
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}
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if (fullscreen) {
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fullscreen->rect = params.rect;
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x_raise_con(fullscreen);
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render_con(fullscreen, true);
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/* Fullscreen containers are either global (underneath the CT_ROOT
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* container) or per-output (underneath the CT_CONTENT container). For
|
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* global fullscreen containers, we cannot abort rendering here yet,
|
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* because the floating windows (with popup_during_fullscreen smart)
|
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* have not yet been rendered (see the CT_ROOT code path below). See
|
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* also http://bugs.i3wm.org/1393 */
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if (con->type != CT_ROOT) {
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return;
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}
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}
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/* find the height for the decorations */
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params.deco_height = render_deco_height();
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/* precalculate the sizes to be able to correct rounding errors */
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params.sizes = precalculate_sizes(con, ¶ms);
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if (con->layout == L_OUTPUT) {
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/* Skip i3-internal outputs */
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if (con_is_internal(con))
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goto free_params;
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render_l_output(con);
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} else if (con->type == CT_ROOT) {
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Con *output;
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if (!fullscreen) {
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TAILQ_FOREACH(output, &(con->nodes_head), nodes) {
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render_con(output, false);
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}
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}
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|
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/* We need to render floating windows after rendering all outputs’
|
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* tiling windows because they need to be on top of *every* output at
|
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* all times. This is important when the user places floating
|
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* windows/containers so that they overlap on another output. */
|
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DLOG("Rendering floating windows:\n");
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TAILQ_FOREACH(output, &(con->nodes_head), nodes) {
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if (con_is_internal(output))
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continue;
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/* Get the active workspace of that output */
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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);
|
||||
}
|
||||
}
|
||||
|
||||
} else {
|
||||
Con *child;
|
||||
TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
|
||||
assert(params.children > 0);
|
||||
|
||||
if (con->layout == L_SPLITH || con->layout == L_SPLITV) {
|
||||
render_con_split(con, child, ¶ms, i);
|
||||
} else if (con->layout == L_STACKED) {
|
||||
render_con_stacked(con, child, ¶ms, i);
|
||||
} else if (con->layout == L_TABBED) {
|
||||
render_con_tabbed(con, child, ¶ms, i);
|
||||
} else if (con->layout == L_DOCKAREA) {
|
||||
render_con_dockarea(con, child, ¶ms);
|
||||
}
|
||||
|
||||
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++;
|
||||
}
|
||||
|
||||
/* 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);
|
||||
}
|
||||
|
||||
if (params.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);
|
||||
}
|
||||
}
|
||||
|
||||
free_params:
|
||||
FREE(params.sizes);
|
||||
}
|
||||
|
||||
static int *precalculate_sizes(Con *con, render_params *p) {
|
||||
int *sizes = smalloc(p->children * sizeof(int));
|
||||
if ((con->layout == L_SPLITH || con->layout == L_SPLITV) && p->children > 0) {
|
||||
assert(!TAILQ_EMPTY(&con->nodes_head));
|
||||
|
||||
Con *child;
|
||||
int i = 0, assigned = 0;
|
||||
int total = con_orientation(con) == HORIZ ? p->rect.width : p->rect.height;
|
||||
TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
|
||||
double percentage = child->percent > 0.0 ? child->percent : 1.0 / p->children;
|
||||
assigned += sizes[i++] = percentage * total;
|
||||
}
|
||||
assert(assigned == total ||
|
||||
(assigned > total && assigned - total <= p->children * 2) ||
|
||||
(assigned < total && total - assigned <= p->children * 2));
|
||||
int signal = assigned < total ? 1 : -1;
|
||||
while (assigned != total) {
|
||||
for (i = 0; i < p->children && assigned != total; ++i) {
|
||||
sizes[i] += signal;
|
||||
assigned += signal;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return sizes;
|
||||
}
|
||||
|
||||
static void render_con_split(Con *con, Con *child, render_params *p, int i) {
|
||||
assert(con->layout == L_SPLITH || con->layout == L_SPLITV);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue