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) {
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 if (!render_fullscreen)
53 *inset = rect_add(*inset, con_border_style_rect(con));
56 inset->width -= (2 * con->border_width);
57 inset->height -= (2 * con->border_width);
59 /* Obey the aspect ratio, if any */
60 if (con->proportional_height != 0 &&
61 con->proportional_width != 0) {
62 DLOG("proportional height = %d, width = %d\n", con->proportional_height, con->proportional_width);
63 double new_height = inset->height + 1;
64 int new_width = inset->width;
66 while (new_height > inset->height) {
67 new_height = ((double)con->proportional_height / con->proportional_width) * new_width;
69 if (new_height > inset->height)
72 /* Center the window */
73 inset->y += ceil(inset->height / 2) - floor(new_height / 2);
74 inset->x += ceil(inset->width / 2) - floor(new_width / 2);
76 inset->height = new_height;
77 inset->width = new_width;
78 DLOG("new_height = %f, new_width = %d\n", new_height, new_width);
81 if (con->height_increment > 1) {
82 int old_height = inset->height;
83 inset->height -= (inset->height - con->base_height) % con->height_increment;
84 DLOG("Lost %d pixel due to client's height_increment (%d px, base_height = %d)\n",
85 old_height - inset->height, con->height_increment, con->base_height);
88 if (con->width_increment > 1) {
89 int old_width = inset->width;
90 inset->width -= (inset->width - con->base_width) % con->width_increment;
91 DLOG("Lost %d pixel due to client's width_increment (%d px, base_width = %d)\n",
92 old_width - inset->width, con->width_increment, con->base_width);
95 DLOG("child will be at %dx%d with size %dx%d\n", inset->x, inset->y, inset->width, inset->height);
98 /* Check for fullscreen nodes */
99 Con *fullscreen = con_get_fullscreen_con(con);
101 LOG("got fs node: %p\n", fullscreen);
102 fullscreen->rect = rect;
103 x_raise_con(fullscreen);
104 render_con(fullscreen, true);
108 /* find the height for the decorations */
109 i3Font *font = load_font(conn, config.font);
110 int deco_height = font->height + 5;
113 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
116 if (con->layout == L_DEFAULT) {
117 double percentage = 1.0 / children;
118 if (child->percent > 0.0)
119 percentage = child->percent;
120 printf("child %p / %s requests percentage %f\n",
121 child, child->name, percentage);
123 if (con->orientation == HORIZ) {
126 child->rect.width = percentage * rect.width;
127 child->rect.height = rect.height;
128 x += child->rect.width;
132 child->rect.width = rect.width;
133 child->rect.height = percentage * rect.height;
134 y += child->rect.height;
137 /* first we have the decoration, if this is a leaf node */
138 if (con_is_leaf(child) && child->border_style == BS_NORMAL) {
139 printf("that child is a leaf node, subtracting deco\n");
140 /* TODO: make a function for relative coords? */
141 child->deco_rect.x = child->rect.x - con->rect.x;
142 child->deco_rect.y = child->rect.y - con->rect.y;
144 child->rect.y += deco_height;
145 child->rect.height -= deco_height;
147 child->deco_rect.width = child->rect.width;
148 child->deco_rect.height = deco_height;
153 else if (con->layout == L_STACKED) {
154 printf("stacked con\n");
157 child->rect.width = rect.width;
158 child->rect.height = rect.height;
160 child->rect.y += (deco_height * children);
161 child->rect.height -= (deco_height * children);
163 child->deco_rect.x = x - con->rect.x;
164 child->deco_rect.y = y - con->rect.y + (i * deco_height);
165 child->deco_rect.width = child->rect.width;
166 child->deco_rect.height = deco_height;
170 else if (con->layout == L_TABBED) {
171 printf("tabbed con\n");
174 child->rect.width = rect.width;
175 child->rect.height = rect.height;
177 child->deco_rect.width = child->rect.width / children;
178 child->deco_rect.height = deco_height;
179 child->deco_rect.x = x - con->rect.x + i * child->deco_rect.width;
180 child->deco_rect.y = y - con->rect.y;
182 child->rect.y += deco_height;
183 child->rect.height -= deco_height;
186 printf("child at (%d, %d) with (%d x %d)\n",
187 child->rect.x, child->rect.y, child->rect.width, child->rect.height);
188 printf("x now %d, y now %d\n", x, y);
190 render_con(child, false);
194 /* in a stacking or tabbed container, we ensure the focused client is raised */
195 if (con->layout == L_STACKED || con->layout == L_TABBED) {
196 Con *foc = TAILQ_FIRST(&(con->focus_head));
197 if (foc != TAILQ_END(&(con->focus_head))) {
198 LOG("con %p is stacking, raising %p\n", con, foc);
200 /* by rendering the stacked container again, we handle the case
201 * that we have a non-leaf-container inside the stack. */
202 render_con(foc, false);
206 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
207 LOG("render floating:\n");
208 LOG("floating child at (%d,%d) with %d x %d\n", child->rect.x, child->rect.y, child->rect.width, child->rect.height);
210 render_con(child, false);
213 printf("-- level up\n");