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00001 /* 00002 * vim:ts=4:sw=4:expandtab 00003 */ 00004 00005 #include "all.h" 00006 00007 /* change this to 'true' if you want to have additional borders around every 00008 * container (for debugging purposes) */ 00009 static bool show_debug_borders = false; 00010 00011 /* 00012 * Renders a container with layout L_OUTPUT. In this layout, all CT_DOCKAREAs 00013 * get the height of their content and the remaining CT_CON gets the rest. 00014 * 00015 */ 00016 static void render_l_output(Con *con) { 00017 Con *child, *dockchild; 00018 00019 int x = con->rect.x; 00020 int y = con->rect.y; 00021 int height = con->rect.height; 00022 DLOG("Available height: %d\n", height); 00023 00024 /* Find the content container and ensure that there is exactly one. Also 00025 * check for any non-CT_DOCKAREA clients. */ 00026 Con *content = NULL; 00027 TAILQ_FOREACH(child, &(con->nodes_head), nodes) { 00028 if (child->type == CT_CON) { 00029 if (content != NULL) { 00030 DLOG("More than one CT_CON on output container\n"); 00031 assert(false); 00032 } 00033 content = child; 00034 } else if (child->type != CT_DOCKAREA) { 00035 DLOG("Child %p of type %d is inside the OUTPUT con\n", child, child->type); 00036 assert(false); 00037 } 00038 } 00039 00040 assert(content != NULL); 00041 00042 /* We need to find out if there is a fullscreen con on the current workspace 00043 * and take the short-cut to render it directly (the user does not want to 00044 * see the dockareas in that case) */ 00045 Con *ws = con_get_fullscreen_con(content, CF_OUTPUT); 00046 Con *fullscreen = con_get_fullscreen_con(ws, CF_OUTPUT); 00047 if (fullscreen) { 00048 DLOG("got fs node: %p\n", fullscreen); 00049 fullscreen->rect = con->rect; 00050 x_raise_con(fullscreen); 00051 render_con(fullscreen, true); 00052 return; 00053 } 00054 00055 /* First pass: determine the height of all CT_DOCKAREAs (the sum of their 00056 * children) and figure out how many pixels we have left for the rest */ 00057 TAILQ_FOREACH(child, &(con->nodes_head), nodes) { 00058 if (child->type != CT_DOCKAREA) 00059 continue; 00060 00061 child->rect.height = 0; 00062 TAILQ_FOREACH(dockchild, &(child->nodes_head), nodes) 00063 child->rect.height += dockchild->geometry.height; 00064 DLOG("This dockarea's height: %d\n", child->rect.height); 00065 00066 height -= child->rect.height; 00067 } 00068 00069 DLOG("Remaining: %d\n", height); 00070 00071 /* Second pass: Set the widths/heights */ 00072 TAILQ_FOREACH(child, &(con->nodes_head), nodes) { 00073 if (child->type == CT_CON) { 00074 child->rect.x = x; 00075 child->rect.y = y; 00076 child->rect.width = con->rect.width; 00077 child->rect.height = height; 00078 } 00079 00080 child->rect.x = x; 00081 child->rect.y = y; 00082 child->rect.width = con->rect.width; 00083 00084 child->deco_rect.x = 0; 00085 child->deco_rect.y = 0; 00086 child->deco_rect.width = 0; 00087 child->deco_rect.height = 0; 00088 00089 y += child->rect.height; 00090 00091 DLOG("child at (%d, %d) with (%d x %d)\n", 00092 child->rect.x, child->rect.y, child->rect.width, child->rect.height); 00093 DLOG("x now %d, y now %d\n", x, y); 00094 x_raise_con(child); 00095 render_con(child, false); 00096 } 00097 } 00098 00099 /* 00100 * "Renders" the given container (and its children), meaning that all rects are 00101 * updated correctly. Note that this function does not call any xcb_* 00102 * functions, so the changes are completely done in memory only (and 00103 * side-effect free). As soon as you call x_push_changes(), the changes will be 00104 * updated in X11. 00105 * 00106 */ 00107 void render_con(Con *con, bool render_fullscreen) { 00108 DLOG("currently rendering node %p / %s / layout %d\n", 00109 con, con->name, con->layout); 00110 int children = con_num_children(con); 00111 DLOG("children: %d, orientation = %d\n", children, con->orientation); 00112 00113 /* Copy container rect, subtract container border */ 00114 /* This is the actually usable space inside this container for clients */ 00115 Rect rect = con->rect; 00116 00117 /* Display a border if this is a leaf node. For container nodes, we don’t 00118 * draw borders (except when in debug mode) */ 00119 if (show_debug_borders) { 00120 rect.x += 2; 00121 rect.y += 2; 00122 rect.width -= 2 * 2; 00123 rect.height -= 2 * 2; 00124 } 00125 00126 int x = rect.x; 00127 int y = rect.y; 00128 00129 int i = 0; 00130 00131 con->mapped = true; 00132 00133 /* if this container contains a window, set the coordinates */ 00134 if (con->window) { 00135 /* depending on the border style, the rect of the child window 00136 * needs to be smaller */ 00137 Rect *inset = &(con->window_rect); 00138 *inset = (Rect){0, 0, con->rect.width, con->rect.height}; 00139 if (!render_fullscreen) 00140 *inset = rect_add(*inset, con_border_style_rect(con)); 00141 00142 DLOG("Starting with inset = (%d, %d) %d x %d\n", inset->x, inset->y, inset->width, inset->height); 00143 /* Obey x11 border */ 00144 DLOG("X11 border: %d\n", con->border_width); 00145 inset->width -= (2 * con->border_width); 00146 inset->height -= (2 * con->border_width); 00147 00148 /* Obey the aspect ratio, if any */ 00149 if (con->proportional_height != 0 && 00150 con->proportional_width != 0) { 00151 DLOG("proportional height = %d, width = %d\n", con->proportional_height, con->proportional_width); 00152 double new_height = inset->height + 1; 00153 int new_width = inset->width; 00154 00155 while (new_height > inset->height) { 00156 new_height = ((double)con->proportional_height / con->proportional_width) * new_width; 00157 00158 if (new_height > inset->height) 00159 new_width--; 00160 } 00161 /* Center the window */ 00162 inset->y += ceil(inset->height / 2) - floor(new_height / 2); 00163 inset->x += ceil(inset->width / 2) - floor(new_width / 2); 00164 00165 inset->height = new_height; 00166 inset->width = new_width; 00167 DLOG("new_height = %f, new_width = %d\n", new_height, new_width); 00168 } 00169 00170 if (con->height_increment > 1) { 00171 int old_height = inset->height; 00172 inset->height -= (inset->height - con->base_height) % con->height_increment; 00173 DLOG("Lost %d pixel due to client's height_increment (%d px, base_height = %d)\n", 00174 old_height - inset->height, con->height_increment, con->base_height); 00175 } 00176 00177 if (con->width_increment > 1) { 00178 int old_width = inset->width; 00179 inset->width -= (inset->width - con->base_width) % con->width_increment; 00180 DLOG("Lost %d pixel due to client's width_increment (%d px, base_width = %d)\n", 00181 old_width - inset->width, con->width_increment, con->base_width); 00182 } 00183 00184 DLOG("child will be at %dx%d with size %dx%d\n", inset->x, inset->y, inset->width, inset->height); 00185 } 00186 00187 /* Check for fullscreen nodes */ 00188 Con *fullscreen = NULL; 00189 if (con->type != CT_OUTPUT) { 00190 fullscreen = con_get_fullscreen_con(con, (con->type == CT_ROOT ? CF_GLOBAL : CF_OUTPUT)); 00191 } 00192 if (fullscreen) { 00193 DLOG("got fs node: %p\n", fullscreen); 00194 fullscreen->rect = rect; 00195 x_raise_con(fullscreen); 00196 render_con(fullscreen, true); 00197 return; 00198 } 00199 00200 /* find the height for the decorations */ 00201 int deco_height = config.font.height + 5; 00202 00203 /* precalculate the sizes to be able to correct rounding errors */ 00204 int sizes[children]; 00205 if (con->layout == L_DEFAULT && children > 0) { 00206 assert(!TAILQ_EMPTY(&con->nodes_head)); 00207 Con *child; 00208 int i = 0, assigned = 0; 00209 int total = con->orientation == HORIZ ? rect.width : rect.height; 00210 TAILQ_FOREACH(child, &(con->nodes_head), nodes) { 00211 double percentage = child->percent > 0.0 ? child->percent : 1.0 / children; 00212 assigned += sizes[i++] = percentage * total; 00213 } 00214 assert(assigned == total || 00215 (assigned > total && assigned - total <= children * 2) || 00216 (assigned < total && total - assigned <= children * 2)); 00217 int signal = assigned < total ? 1 : -1; 00218 while (assigned != total) { 00219 for (i = 0; i < children && assigned != total; ++i) { 00220 sizes[i] += signal; 00221 assigned += signal; 00222 } 00223 } 00224 } 00225 00226 if (con->layout == L_OUTPUT) { 00227 render_l_output(con); 00228 } else if (con->type == CT_ROOT) { 00229 DLOG("Root node, rendering outputs\n"); 00230 Con *child; 00231 TAILQ_FOREACH(child, &(con->nodes_head), nodes) { 00232 render_con(child, false); 00233 } 00234 } else { 00235 00236 /* FIXME: refactor this into separate functions: */ 00237 Con *child; 00238 TAILQ_FOREACH(child, &(con->nodes_head), nodes) { 00239 assert(children > 0); 00240 00241 /* default layout */ 00242 if (con->layout == L_DEFAULT) { 00243 if (con->orientation == HORIZ) { 00244 child->rect.x = x; 00245 child->rect.y = y; 00246 child->rect.width = sizes[i]; 00247 child->rect.height = rect.height; 00248 x += child->rect.width; 00249 } else { 00250 child->rect.x = x; 00251 child->rect.y = y; 00252 child->rect.width = rect.width; 00253 child->rect.height = sizes[i]; 00254 y += child->rect.height; 00255 } 00256 00257 /* first we have the decoration, if this is a leaf node */ 00258 if (con_is_leaf(child) && child->border_style == BS_NORMAL) { 00259 DLOG("that child is a leaf node, subtracting deco\n"); 00260 /* TODO: make a function for relative coords? */ 00261 child->deco_rect.x = child->rect.x - con->rect.x; 00262 child->deco_rect.y = child->rect.y - con->rect.y; 00263 00264 child->rect.y += deco_height; 00265 child->rect.height -= deco_height; 00266 00267 child->deco_rect.width = child->rect.width; 00268 child->deco_rect.height = deco_height; 00269 } 00270 } 00271 00272 /* stacked layout */ 00273 else if (con->layout == L_STACKED) { 00274 DLOG("stacked con\n"); 00275 child->rect.x = x; 00276 child->rect.y = y; 00277 child->rect.width = rect.width; 00278 child->rect.height = rect.height; 00279 00280 child->deco_rect.x = x - con->rect.x; 00281 child->deco_rect.y = y - con->rect.y + (i * deco_height); 00282 child->deco_rect.width = child->rect.width; 00283 child->deco_rect.height = deco_height; 00284 00285 if (children > 1 || (child->border_style != BS_1PIXEL && child->border_style != BS_NONE)) { 00286 child->rect.y += (deco_height * children); 00287 child->rect.height -= (deco_height * children); 00288 } 00289 } 00290 00291 /* tabbed layout */ 00292 else if (con->layout == L_TABBED) { 00293 DLOG("tabbed con\n"); 00294 child->rect.x = x; 00295 child->rect.y = y; 00296 child->rect.width = rect.width; 00297 child->rect.height = rect.height; 00298 00299 child->deco_rect.width = child->rect.width / children; 00300 child->deco_rect.height = deco_height; 00301 child->deco_rect.x = x - con->rect.x + i * child->deco_rect.width; 00302 child->deco_rect.y = y - con->rect.y; 00303 00304 if (children > 1 || (child->border_style != BS_1PIXEL && child->border_style != BS_NONE)) { 00305 child->rect.y += deco_height; 00306 child->rect.height -= deco_height; 00307 } 00308 } 00309 00310 /* dockarea layout */ 00311 else if (con->layout == L_DOCKAREA) { 00312 DLOG("dockarea con\n"); 00313 child->rect.x = x; 00314 child->rect.y = y; 00315 child->rect.width = rect.width; 00316 child->rect.height = child->geometry.height; 00317 00318 child->deco_rect.x = 0; 00319 child->deco_rect.y = 0; 00320 child->deco_rect.width = 0; 00321 child->deco_rect.height = 0; 00322 y += child->rect.height; 00323 } 00324 00325 DLOG("child at (%d, %d) with (%d x %d)\n", 00326 child->rect.x, child->rect.y, child->rect.width, child->rect.height); 00327 DLOG("x now %d, y now %d\n", x, y); 00328 x_raise_con(child); 00329 render_con(child, false); 00330 i++; 00331 } 00332 00333 /* in a stacking or tabbed container, we ensure the focused client is raised */ 00334 if (con->layout == L_STACKED || con->layout == L_TABBED) { 00335 DLOG("stacked/tabbed, raising focused reverse\n"); 00336 TAILQ_FOREACH_REVERSE(child, &(con->focus_head), focus_head, focused) 00337 x_raise_con(child); 00338 DLOG("done\n"); 00339 if ((child = TAILQ_FIRST(&(con->focus_head)))) { 00340 DLOG("con %p is stacking, raising %p\n", con, child); 00341 /* By rendering the stacked container again, we handle the case 00342 * that we have a non-leaf-container inside the stack. In that 00343 * case, the children of the non-leaf-container need to be raised 00344 * aswell. */ 00345 render_con(child, false); 00346 } 00347 00348 if (children != 1) 00349 /* Raise the stack con itself. This will put the stack decoration on 00350 * top of every stack window. That way, when a new window is opened in 00351 * the stack, the old window will not obscure part of the decoration 00352 * (it’s unmapped afterwards). */ 00353 x_raise_con(con); 00354 } 00355 } 00356 00357 Con *child; 00358 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) { 00359 DLOG("render floating:\n"); 00360 DLOG("floating child at (%d,%d) with %d x %d\n", child->rect.x, child->rect.y, child->rect.width, child->rect.height); 00361 x_raise_con(child); 00362 render_con(child, false); 00363 } 00364 00365 DLOG("-- level up\n"); 00366 }