git.sur5r.net Git - i3/i3/blob - src/render.c

   1 /*
   2  * vim:ts=4:sw=4:expandtab
   3  */
   4
   5 #include "all.h"
   6
   7 /*
   8  * "Renders" the given container (and its children), meaning that all rects are
   9  * updated correctly. Note that this function does not call any xcb_*
  10  * functions, so the changes are completely done in memory only (and
  11  * side-effect free). As soon as you call x_push_changes(), the changes will be
  12  * updated in X11.
  13  *
  14  */
  15 void render_con(Con *con) {
  16     printf("currently rendering node %p / %s / layout %d\n",
  17             con, con->name, con->layout);
  18     int children = 0;
  19     Con *child;
  20     TAILQ_FOREACH(child, &(con->nodes_head), nodes)
  21         children++;
  22     printf("children: %d, orientation = %d\n", children, con->orientation);
  23
  24     /* Copy container rect, subtract container border */
  25     /* This is the actually usable space inside this container for clients */
  26     Rect rect = con->rect;
  27     rect.x += 2;
  28     rect.y += 2;
  29     rect.width -= 2 * 2;
  30     rect.height -= 2 * 2;
  31
  32     int x = rect.x;
  33     int y = rect.y;
  34
  35     int i = 0;
  36
  37     printf("mapped = true\n");
  38     con->mapped = true;
  39
  40     /* if this container contains a window, set the coordinates */
  41     if (con->window) {
  42         /* depending on the border style, the rect of the child window
  43          * needs to be smaller */
  44         Rect *inset = &(con->window_rect);
  45         *inset = (Rect){0, 0, con->rect.width, con->rect.height};
  46         /* TODO: different border styles */
  47         inset->x += 2;
  48         inset->width -= 2 * 2;
  49         inset->height -= 2;
  50
  51         /* Obey the aspect ratio, if any */
  52         if (con->proportional_height != 0 &&
  53             con->proportional_width != 0) {
  54             DLOG("proportional height = %d, width = %d\n", con->proportional_height, con->proportional_width);
  55             double new_height = inset->height + 1;
  56             int new_width = inset->width;
  57
  58             while (new_height > inset->height) {
  59                 new_height = ((double)con->proportional_height / con->proportional_width) * new_width;
  60
  61                 if (new_height > inset->height)
  62                     new_width--;
  63             }
  64             /* Center the window */
  65             inset->y += ceil(inset->height / 2) - floor(new_height / 2);
  66             inset->x += ceil(inset->width / 2) - floor(new_width / 2);
  67
  68             inset->height = new_height;
  69             inset->width = new_width;
  70             DLOG("new_height = %f, new_width = %d\n", new_height, new_width);
  71         }
  72
  73         if (con->height_increment > 1) {
  74             int old_height = inset->height;
  75             inset->height -= (inset->height - con->base_height) % con->height_increment;
  76             DLOG("Lost %d pixel due to client's height_increment (%d px, base_height = %d)\n",
  77                 old_height - inset->height, con->height_increment, con->base_height);
  78         }
  79
  80         if (con->width_increment > 1) {
  81             int old_width = inset->width;
  82             inset->width -= (inset->width - con->base_width) % con->width_increment;
  83             DLOG("Lost %d pixel due to client's width_increment (%d px, base_width = %d)\n",
  84                 old_width - inset->width, con->width_increment, con->base_width);
  85         }
  86
  87         DLOG("child will be at %dx%d with size %dx%d\n", inset->x, inset->y, inset->width, inset->height);
  88     }
  89
  90     /* Check for fullscreen nodes */
  91     Con *fullscreen = con_get_fullscreen_con(con);
  92     if (fullscreen) {
  93         LOG("got fs node: %p\n", fullscreen);
  94         fullscreen->rect = rect;
  95         x_raise_con(fullscreen);
  96         render_con(fullscreen);
  97         return;
  98     }
  99
 100     TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
 101
 102         /* default layout */
 103         if (con->layout == L_DEFAULT) {
 104             double percentage = 1.0 / children;
 105             if (child->percent > 0.0)
 106                 percentage = child->percent;
 107             printf("child %p / %s requests percentage %f\n",
 108                     child, child->name, percentage);
 109
 110             if (con->orientation == HORIZ) {
 111                 child->rect.x = x;
 112                 child->rect.y = y;
 113                 child->rect.width = percentage * rect.width;
 114                 child->rect.height = rect.height;
 115                 x += child->rect.width;
 116             } else {
 117                 child->rect.x = x;
 118                 child->rect.y = y;
 119                 child->rect.width = rect.width;
 120                 child->rect.height = percentage * rect.height;
 121                 y += child->rect.height;
 122             }
 123
 124             /* first we have the decoration, if this is a leaf node */
 125             if (con_is_leaf(child)) {
 126                 printf("that child is a leaf node, subtracting deco\n");
 127                 /* TODO: make a function for relative coords? */
 128                 child->deco_rect.x = child->rect.x - con->rect.x;
 129                 child->deco_rect.y = child->rect.y - con->rect.y;
 130
 131                 child->rect.y += 17;
 132                 child->rect.height -= 17;
 133
 134                 child->deco_rect.width = child->rect.width;
 135                 child->deco_rect.height = 17;
 136             }
 137         }
 138
 139         if (con->layout == L_STACKED) {
 140             printf("stacked con\n");
 141             child->rect.x = x;
 142             child->rect.y = y;
 143             child->rect.width = rect.width;
 144             child->rect.height = rect.height;
 145
 146             child->rect.y += (17 * children);
 147             child->rect.height -= (17 * children);
 148
 149             child->deco_rect.x = x - con->rect.x;
 150             child->deco_rect.y = y - con->rect.y + (i * 17);
 151             child->deco_rect.width = child->rect.width;
 152             child->deco_rect.height = 17;
 153         }
 154
 155         printf("child at (%d, %d) with (%d x %d)\n",
 156                 child->rect.x, child->rect.y, child->rect.width, child->rect.height);
 157         printf("x now %d, y now %d\n", x, y);
 158         x_raise_con(child);
 159         render_con(child);
 160         i++;
 161     }
 162
 163     /* in a stacking container, we ensure the focused client is raised */
 164     if (con->layout == L_STACKED) {
 165         Con *foc = TAILQ_FIRST(&(con->focus_head));
 166         if (foc != TAILQ_END(&(con->focus_head)))
 167             x_raise_con(foc);
 168     }
 169
 170     TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
 171         LOG("render floating:\n");
 172         LOG("floating child at (%d,%d) with %d x %d\n", child->rect.x, child->rect.y, child->rect.width, child->rect.height);
 173         x_raise_con(child);
 174         render_con(child);
 175     }
 176
 177     printf("-- level up\n");
 178 }