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, bool render_fullscreen) {
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) {
45 /* if this container contains a window, set the coordinates */
47 /* depending on the border style, the rect of the child window
48 * needs to be smaller */
49 Rect *inset = &(con->window_rect);
50 *inset = (Rect){0, 0, con->rect.width, con->rect.height};
51 if (!render_fullscreen)
52 *inset = rect_add(*inset, con_border_style_rect(con));
55 inset->width -= (2 * con->border_width);
56 inset->height -= (2 * con->border_width);
58 /* Obey the aspect ratio, if any */
59 if (con->proportional_height != 0 &&
60 con->proportional_width != 0) {
61 DLOG("proportional height = %d, width = %d\n", con->proportional_height, con->proportional_width);
62 double new_height = inset->height + 1;
63 int new_width = inset->width;
65 while (new_height > inset->height) {
66 new_height = ((double)con->proportional_height / con->proportional_width) * new_width;
68 if (new_height > inset->height)
71 /* Center the window */
72 inset->y += ceil(inset->height / 2) - floor(new_height / 2);
73 inset->x += ceil(inset->width / 2) - floor(new_width / 2);
75 inset->height = new_height;
76 inset->width = new_width;
77 DLOG("new_height = %f, new_width = %d\n", new_height, new_width);
80 if (con->height_increment > 1) {
81 int old_height = inset->height;
82 inset->height -= (inset->height - con->base_height) % con->height_increment;
83 DLOG("Lost %d pixel due to client's height_increment (%d px, base_height = %d)\n",
84 old_height - inset->height, con->height_increment, con->base_height);
87 if (con->width_increment > 1) {
88 int old_width = inset->width;
89 inset->width -= (inset->width - con->base_width) % con->width_increment;
90 DLOG("Lost %d pixel due to client's width_increment (%d px, base_width = %d)\n",
91 old_width - inset->width, con->width_increment, con->base_width);
94 DLOG("child will be at %dx%d with size %dx%d\n", inset->x, inset->y, inset->width, inset->height);
97 /* Check for fullscreen nodes */
98 Con *fullscreen = con_get_fullscreen_con(con);
100 LOG("got fs node: %p\n", fullscreen);
101 fullscreen->rect = rect;
102 x_raise_con(fullscreen);
103 render_con(fullscreen, true);
107 /* find the height for the decorations */
108 i3Font *font = load_font(conn, config.font);
109 int deco_height = font->height + 5;
112 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
115 if (con->layout == L_DEFAULT) {
116 double percentage = 1.0 / children;
117 if (child->percent > 0.0)
118 percentage = child->percent;
119 printf("child %p / %s requests percentage %f\n",
120 child, child->name, percentage);
122 if (con->orientation == HORIZ) {
125 child->rect.width = percentage * rect.width;
126 child->rect.height = rect.height;
127 x += child->rect.width;
131 child->rect.width = rect.width;
132 child->rect.height = percentage * rect.height;
133 y += child->rect.height;
136 /* first we have the decoration, if this is a leaf node */
137 if (con_is_leaf(child) && child->border_style == BS_NORMAL) {
138 printf("that child is a leaf node, subtracting deco\n");
139 /* TODO: make a function for relative coords? */
140 child->deco_rect.x = child->rect.x - con->rect.x;
141 child->deco_rect.y = child->rect.y - con->rect.y;
143 child->rect.y += deco_height;
144 child->rect.height -= deco_height;
146 child->deco_rect.width = child->rect.width;
147 child->deco_rect.height = deco_height;
152 else if (con->layout == L_STACKED) {
153 printf("stacked con\n");
156 child->rect.width = rect.width;
157 child->rect.height = rect.height;
159 child->rect.y += (deco_height * children);
160 child->rect.height -= (deco_height * children);
162 child->deco_rect.x = x - con->rect.x;
163 child->deco_rect.y = y - con->rect.y + (i * deco_height);
164 child->deco_rect.width = child->rect.width;
165 child->deco_rect.height = deco_height;
169 else if (con->layout == L_TABBED) {
170 printf("tabbed con\n");
173 child->rect.width = rect.width;
174 child->rect.height = rect.height;
176 child->deco_rect.width = child->rect.width / children;
177 child->deco_rect.height = deco_height;
178 child->deco_rect.x = x - con->rect.x + i * child->deco_rect.width;
179 child->deco_rect.y = y - con->rect.y;
181 child->rect.y += deco_height;
182 child->rect.height -= deco_height;
185 printf("child at (%d, %d) with (%d x %d)\n",
186 child->rect.x, child->rect.y, child->rect.width, child->rect.height);
187 printf("x now %d, y now %d\n", x, y);
189 render_con(child, false);
193 /* in a stacking or tabbed container, we ensure the focused client is raised */
194 if (con->layout == L_STACKED || con->layout == L_TABBED) {
195 Con *foc = TAILQ_FIRST(&(con->focus_head));
196 if (foc != TAILQ_END(&(con->focus_head))) {
197 LOG("con %p is stacking, raising %p\n", con, foc);
199 /* by rendering the stacked container again, we handle the case
200 * that we have a non-leaf-container inside the stack. */
201 render_con(foc, false);
205 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
206 LOG("render floating:\n");
207 LOG("floating child at (%d,%d) with %d x %d\n", child->rect.x, child->rect.y, child->rect.width, child->rect.height);
209 render_con(child, false);
212 printf("-- level up\n");