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" the given container (and its children), meaning that all rects are
13 * updated correctly. Note that this function does not call any xcb_*
14 * functions, so the changes are completely done in memory only (and
15 * side-effect free). As soon as you call x_push_changes(), the changes will be
19 void render_con(Con *con) {
20 printf("currently rendering node %p / %s / layout %d\n",
21 con, con->name, con->layout);
22 int children = con_num_children(con);
23 printf("children: %d, orientation = %d\n", children, con->orientation);
25 /* Copy container rect, subtract container border */
26 /* This is the actually usable space inside this container for clients */
27 Rect rect = con->rect;
29 /* Display a border if this is a leaf node. For container nodes, we don’t
30 * draw borders (except when in debug mode) */
31 if (show_debug_borders) {
43 printf("mapped = true\n");
46 /* if this container contains a window, set the coordinates */
48 /* depending on the border style, the rect of the child window
49 * needs to be smaller */
50 Rect *inset = &(con->window_rect);
51 *inset = (Rect){0, 0, con->rect.width, con->rect.height};
52 *inset = rect_add(*inset, con_border_style_rect(con));
54 /* Obey the aspect ratio, if any */
55 if (con->proportional_height != 0 &&
56 con->proportional_width != 0) {
57 DLOG("proportional height = %d, width = %d\n", con->proportional_height, con->proportional_width);
58 double new_height = inset->height + 1;
59 int new_width = inset->width;
61 while (new_height > inset->height) {
62 new_height = ((double)con->proportional_height / con->proportional_width) * new_width;
64 if (new_height > inset->height)
67 /* Center the window */
68 inset->y += ceil(inset->height / 2) - floor(new_height / 2);
69 inset->x += ceil(inset->width / 2) - floor(new_width / 2);
71 inset->height = new_height;
72 inset->width = new_width;
73 DLOG("new_height = %f, new_width = %d\n", new_height, new_width);
76 if (con->height_increment > 1) {
77 int old_height = inset->height;
78 inset->height -= (inset->height - con->base_height) % con->height_increment;
79 DLOG("Lost %d pixel due to client's height_increment (%d px, base_height = %d)\n",
80 old_height - inset->height, con->height_increment, con->base_height);
83 if (con->width_increment > 1) {
84 int old_width = inset->width;
85 inset->width -= (inset->width - con->base_width) % con->width_increment;
86 DLOG("Lost %d pixel due to client's width_increment (%d px, base_width = %d)\n",
87 old_width - inset->width, con->width_increment, con->base_width);
90 DLOG("child will be at %dx%d with size %dx%d\n", inset->x, inset->y, inset->width, inset->height);
93 /* Check for fullscreen nodes */
94 Con *fullscreen = con_get_fullscreen_con(con);
96 LOG("got fs node: %p\n", fullscreen);
97 fullscreen->rect = rect;
98 x_raise_con(fullscreen);
99 render_con(fullscreen);
104 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
107 if (con->layout == L_DEFAULT) {
108 double percentage = 1.0 / children;
109 if (child->percent > 0.0)
110 percentage = child->percent;
111 printf("child %p / %s requests percentage %f\n",
112 child, child->name, percentage);
114 if (con->orientation == HORIZ) {
117 child->rect.width = percentage * rect.width;
118 child->rect.height = rect.height;
119 x += child->rect.width;
123 child->rect.width = rect.width;
124 child->rect.height = percentage * rect.height;
125 y += child->rect.height;
128 /* first we have the decoration, if this is a leaf node */
129 if (con_is_leaf(child) && child->border_style == BS_NORMAL) {
130 printf("that child is a leaf node, subtracting deco\n");
131 /* TODO: make a function for relative coords? */
132 child->deco_rect.x = child->rect.x - con->rect.x;
133 child->deco_rect.y = child->rect.y - con->rect.y;
136 child->rect.height -= 17;
138 child->deco_rect.width = child->rect.width;
139 child->deco_rect.height = 17;
143 if (con->layout == L_STACKED) {
144 printf("stacked con\n");
147 child->rect.width = rect.width;
148 child->rect.height = rect.height;
150 child->rect.y += (17 * children);
151 child->rect.height -= (17 * children);
153 child->deco_rect.x = x - con->rect.x;
154 child->deco_rect.y = y - con->rect.y + (i * 17);
155 child->deco_rect.width = child->rect.width;
156 child->deco_rect.height = 17;
159 printf("child at (%d, %d) with (%d x %d)\n",
160 child->rect.x, child->rect.y, child->rect.width, child->rect.height);
161 printf("x now %d, y now %d\n", x, y);
167 /* in a stacking container, we ensure the focused client is raised */
168 if (con->layout == L_STACKED) {
169 Con *foc = TAILQ_FIRST(&(con->focus_head));
170 if (foc != TAILQ_END(&(con->focus_head))) {
171 LOG("con %p is stacking, raising %p\n", con, foc);
173 /* by rendering the stacked container again, we handle the case
174 * that we have a non-leaf-container inside the stack. */
179 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
180 LOG("render floating:\n");
181 LOG("floating child at (%d,%d) with %d x %d\n", child->rect.x, child->rect.y, child->rect.width, child->rect.height);
186 printf("-- level up\n");