2 * vim:ts=4:sw=4:expandtab
7 /* change this to 'true' if you want to have additional borders around every
8 * container (for debugging purposes) */
9 static bool show_debug_borders = false;
12 * Renders a container with layout L_OUTPUT. In this layout, all CT_DOCKAREAs
13 * get the height of their content and the remaining CT_CON gets the rest.
16 static void render_l_output(Con *con) {
17 Con *child, *dockchild;
21 int height = con->rect.height;
22 DLOG("Available height: %d\n", height);
24 /* Find the content container and ensure that there is exactly one. Also
25 * check for any non-CT_DOCKAREA clients. */
27 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
28 if (child->type == CT_CON) {
29 if (content != NULL) {
30 DLOG("More than one CT_CON on output container\n");
34 } else if (child->type != CT_DOCKAREA) {
35 DLOG("Child %p of type %d is inside the OUTPUT con\n", child, child->type);
40 assert(content != NULL);
42 /* We need to find out if there is a fullscreen con on the current workspace
43 * and take the short-cut to render it directly (the user does not want to
44 * see the dockareas in that case) */
45 Con *ws = con_get_fullscreen_con(content);
46 Con *fullscreen = con_get_fullscreen_con(ws);
48 DLOG("got fs node: %p\n", fullscreen);
49 fullscreen->rect = con->rect;
50 x_raise_con(fullscreen);
51 render_con(fullscreen, true);
55 /* First pass: determine the height of all CT_DOCKAREAs (the sum of their
56 * children) and figure out how many pixels we have left for the rest */
57 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
58 if (child->type != CT_DOCKAREA)
61 child->rect.height = 0;
62 TAILQ_FOREACH(dockchild, &(child->nodes_head), nodes)
63 child->rect.height += dockchild->geometry.height;
64 DLOG("This dockarea's height: %d\n", child->rect.height);
66 height -= child->rect.height;
69 DLOG("Remaining: %d\n", height);
71 /* Second pass: Set the widths/heights */
72 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
73 if (child->type == CT_CON) {
76 child->rect.width = con->rect.width;
77 child->rect.height = height;
82 child->rect.width = con->rect.width;
84 child->deco_rect.x = 0;
85 child->deco_rect.y = 0;
86 child->deco_rect.width = 0;
87 child->deco_rect.height = 0;
89 y += child->rect.height;
91 DLOG("child at (%d, %d) with (%d x %d)\n",
92 child->rect.x, child->rect.y, child->rect.width, child->rect.height);
93 DLOG("x now %d, y now %d\n", x, y);
95 render_con(child, false);
100 * "Renders" the given container (and its children), meaning that all rects are
101 * updated correctly. Note that this function does not call any xcb_*
102 * functions, so the changes are completely done in memory only (and
103 * side-effect free). As soon as you call x_push_changes(), the changes will be
107 void render_con(Con *con, bool render_fullscreen) {
108 DLOG("currently rendering node %p / %s / layout %d\n",
109 con, con->name, con->layout);
110 int children = con_num_children(con);
111 DLOG("children: %d, orientation = %d\n", children, con->orientation);
113 /* Copy container rect, subtract container border */
114 /* This is the actually usable space inside this container for clients */
115 Rect rect = con->rect;
117 /* Display a border if this is a leaf node. For container nodes, we don’t
118 * draw borders (except when in debug mode) */
119 if (show_debug_borders) {
123 rect.height -= 2 * 2;
133 /* if this container contains a window, set the coordinates */
135 /* depending on the border style, the rect of the child window
136 * needs to be smaller */
137 Rect *inset = &(con->window_rect);
138 *inset = (Rect){0, 0, con->rect.width, con->rect.height};
139 if (!render_fullscreen)
140 *inset = rect_add(*inset, con_border_style_rect(con));
142 /* Obey x11 border */
143 DLOG("X11 border: %d\n", con->border_width);
144 inset->width -= (2 * con->border_width);
145 inset->height -= (2 * con->border_width);
147 /* Obey the aspect ratio, if any */
148 if (con->proportional_height != 0 &&
149 con->proportional_width != 0) {
150 DLOG("proportional height = %d, width = %d\n", con->proportional_height, con->proportional_width);
151 double new_height = inset->height + 1;
152 int new_width = inset->width;
154 while (new_height > inset->height) {
155 new_height = ((double)con->proportional_height / con->proportional_width) * new_width;
157 if (new_height > inset->height)
160 /* Center the window */
161 inset->y += ceil(inset->height / 2) - floor(new_height / 2);
162 inset->x += ceil(inset->width / 2) - floor(new_width / 2);
164 inset->height = new_height;
165 inset->width = new_width;
166 DLOG("new_height = %f, new_width = %d\n", new_height, new_width);
169 if (con->height_increment > 1) {
170 int old_height = inset->height;
171 inset->height -= (inset->height - con->base_height) % con->height_increment;
172 DLOG("Lost %d pixel due to client's height_increment (%d px, base_height = %d)\n",
173 old_height - inset->height, con->height_increment, con->base_height);
176 if (con->width_increment > 1) {
177 int old_width = inset->width;
178 inset->width -= (inset->width - con->base_width) % con->width_increment;
179 DLOG("Lost %d pixel due to client's width_increment (%d px, base_width = %d)\n",
180 old_width - inset->width, con->width_increment, con->base_width);
183 DLOG("child will be at %dx%d with size %dx%d\n", inset->x, inset->y, inset->width, inset->height);
186 /* Check for fullscreen nodes */
187 Con *fullscreen = (con->type == CT_OUTPUT ? NULL : con_get_fullscreen_con(con));
189 DLOG("got fs node: %p\n", fullscreen);
190 fullscreen->rect = rect;
191 x_raise_con(fullscreen);
192 render_con(fullscreen, true);
196 /* find the height for the decorations */
197 i3Font *font = load_font(conn, config.font);
198 int deco_height = font->height + 5;
200 /* precalculate the sizes to be able to correct rounding errors */
202 if (con->layout == L_DEFAULT && children > 0) {
204 int i = 0, assigned = 0;
205 int total = con->orientation == HORIZ ? rect.width : rect.height;
206 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
207 double percentage = child->percent > 0.0 ? child->percent : 1.0 / children;
208 assigned += sizes[i++] = percentage * total;
210 assert(assigned == total ||
211 (assigned > total && assigned - total <= children * 2) ||
212 (assigned < total && total - assigned <= children * 2));
213 int signal = assigned < total ? 1 : -1;
214 while (assigned != total) {
215 for (i = 0; i < children && assigned != total; ++i) {
222 if (con->layout == L_OUTPUT) {
223 render_l_output(con);
226 /* FIXME: refactor this into separate functions: */
228 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
231 if (con->layout == L_DEFAULT) {
232 if (con->orientation == HORIZ) {
235 child->rect.width = sizes[i];
236 child->rect.height = rect.height;
237 x += child->rect.width;
241 child->rect.width = rect.width;
242 child->rect.height = sizes[i];
243 y += child->rect.height;
246 /* first we have the decoration, if this is a leaf node */
247 if (con_is_leaf(child) && child->border_style == BS_NORMAL) {
248 DLOG("that child is a leaf node, subtracting deco\n");
249 /* TODO: make a function for relative coords? */
250 child->deco_rect.x = child->rect.x - con->rect.x;
251 child->deco_rect.y = child->rect.y - con->rect.y;
253 child->rect.y += deco_height;
254 child->rect.height -= deco_height;
256 child->deco_rect.width = child->rect.width;
257 child->deco_rect.height = deco_height;
262 else if (con->layout == L_STACKED) {
263 DLOG("stacked con\n");
266 child->rect.width = rect.width;
267 child->rect.height = rect.height;
269 child->deco_rect.x = x - con->rect.x;
270 child->deco_rect.y = y - con->rect.y + (i * deco_height);
271 child->deco_rect.width = child->rect.width;
272 child->deco_rect.height = deco_height;
274 if (children > 1 || (child->border_style != BS_1PIXEL && child->border_style != BS_NONE)) {
275 child->rect.y += (deco_height * children);
276 child->rect.height -= (deco_height * children);
281 else if (con->layout == L_TABBED) {
282 DLOG("tabbed con\n");
285 child->rect.width = rect.width;
286 child->rect.height = rect.height;
288 child->deco_rect.width = child->rect.width / children;
289 child->deco_rect.height = deco_height;
290 child->deco_rect.x = x - con->rect.x + i * child->deco_rect.width;
291 child->deco_rect.y = y - con->rect.y;
293 if (children > 1 || (child->border_style != BS_1PIXEL && child->border_style != BS_NONE)) {
294 child->rect.y += deco_height;
295 child->rect.height -= deco_height;
299 /* dockarea layout */
300 else if (con->layout == L_DOCKAREA) {
301 DLOG("dockarea con\n");
304 child->rect.width = rect.width;
305 child->rect.height = child->geometry.height;
307 child->deco_rect.x = 0;
308 child->deco_rect.y = 0;
309 child->deco_rect.width = 0;
310 child->deco_rect.height = 0;
311 y += child->rect.height;
314 DLOG("child at (%d, %d) with (%d x %d)\n",
315 child->rect.x, child->rect.y, child->rect.width, child->rect.height);
316 DLOG("x now %d, y now %d\n", x, y);
318 render_con(child, false);
322 /* in a stacking or tabbed container, we ensure the focused client is raised */
323 if (con->layout == L_STACKED || con->layout == L_TABBED) {
324 Con *foc = TAILQ_FIRST(&(con->focus_head));
325 if (foc != TAILQ_END(&(con->focus_head))) {
326 DLOG("con %p is stacking, raising %p\n", con, foc);
328 /* by rendering the stacked container again, we handle the case
329 * that we have a non-leaf-container inside the stack. */
330 render_con(foc, false);
336 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
337 DLOG("render floating:\n");
338 DLOG("floating child at (%d,%d) with %d x %d\n", child->rect.x, child->rect.y, child->rect.width, child->rect.height);
340 render_con(child, false);
343 DLOG("-- level up\n");