src/lib/els_box.c

   1 #include <Elementary.h>
   2 #include "elm_priv.h"
   3
   4 static void
   5 _smart_extents_calculate(Evas_Object *box, Evas_Object_Box_Data *priv, int horizontal, int homogeneous, int extended)
   6 {
   7         Evas_Coord minw, minh, maxw, maxh, mnw, mnh, ww;
   8         Evas_Coord w, cw = 0, cmaxh = 0;
   9         const Eina_List *l;
  10         Evas_Object_Box_Option *opt;
  11     double wx;
  12
  13         /* FIXME: need to calc max */
  14         minw = 0;
  15         minh = 0;
  16         maxw = -1;
  17         maxh = -1;
  18
  19         if (homogeneous)
  20         {
  21                 EINA_LIST_FOREACH(priv->children, l, opt)
  22                 {
  23                         evas_object_size_hint_min_get(opt->obj, &mnw, &mnh);
  24                         if (minh < mnh) minh = mnh;
  25                         if (minw < mnw) minw = mnw;
  26                 }
  27                 if (horizontal)
  28                         minw *= eina_list_count(priv->children);
  29                 else
  30                         minh *= eina_list_count(priv->children);
  31         }
  32         else
  33         {
  34                 if (horizontal && extended)
  35                 {
  36                         evas_object_geometry_get(box, NULL, NULL, &w, NULL);
  37                         evas_object_size_hint_min_get(box, &minw, NULL);
  38                 }
  39
  40                 EINA_LIST_FOREACH(priv->children, l, opt)
  41                 {
  42                         evas_object_size_hint_min_get(opt->obj, &mnw, &mnh);
  43
  44                         if (horizontal)
  45                         {
  46                                 if (extended)
  47                                 {
  48                                         evas_object_size_hint_weight_get(opt->obj, &wx, NULL);
  49
  50                                         if(wx)
  51                                         {
  52                                            if (mnw != -1 && (w - cw) >= mnw)
  53                                                    ww = w - cw;
  54                                            else
  55                                                    ww = w;
  56                                         }
  57                                         else
  58                                                 ww = mnw;
  59
  60                                         if ((cw + mnw) > w)
  61                                         {
  62                                                 minh += cmaxh;
  63
  64                                                 cw = 0;
  65                                                 cmaxh = 0;
  66                                         }
  67                                         cw += ww;
  68                                         if (cmaxh < mnh) cmaxh = mnh;
  69                                 }
  70                                 else
  71                                 {
  72                                         if (minh < mnh) minh = mnh;
  73                                         minw += mnw;
  74                                 }
  75                         }
  76                         else
  77                         {
  78                                 if (minw < mnw) minw = mnw;
  79                                 minh += mnh;
  80                         }
  81                 }
  82
  83                 if(horizontal && extended)
  84                 {
  85                         minh += cmaxh;
  86                 }
  87
  88         }
  89         evas_object_size_hint_min_set(box, minw, minh);
  90 }
  91
  92
  93 static Evas_Coord
  94 _smart_extents_calculate_max_height(Evas_Object *box, Evas_Object_Box_Data *priv, int obj_index)
  95 {
  96         Evas_Coord mnw, mnh, cw = 0, cmaxh = 0, w, ww;
  97         const Eina_List *l;
  98         Evas_Object_Box_Option *opt;
  99         int index = 0;
 100     double wx;
 101
 102         evas_object_geometry_get(box, NULL, NULL, &w, NULL);
 103
 104         EINA_LIST_FOREACH(priv->children, l, opt)
 105         {
 106                 evas_object_size_hint_min_get(opt->obj, &mnw, &mnh);
 107                 evas_object_size_hint_weight_get(opt->obj, &wx, NULL);
 108
 109                 if(wx)
 110                 {
 111                         if (mnw != -1 && (w - cw) >= mnw)
 112                                 ww = w - cw;
 113                         else
 114                                 ww = w;
 115                 }
 116                 else
 117                         ww = mnw;
 118
 119                 if ((cw + ww) > w)
 120                 {
 121                         if (index > obj_index )
 122                         {
 123                                 return cmaxh;
 124                         }
 125                         cw = 0;
 126                         cmaxh = 0;
 127                 }
 128
 129                 cw += ww;
 130                 if (cmaxh < mnh) cmaxh = mnh;
 131
 132                 index++;
 133         }
 134
 135         return cmaxh;
 136 }
 137
 138
 139 void
 140 _els_box_layout(Evas_Object *o, Evas_Object_Box_Data *priv, int horizontal, int homogeneous)
 141 {
 142         _els_box_layout_ex(o, priv, horizontal, homogeneous, 0);
 143 }
 144
 145 void
 146 _els_box_layout_ex(Evas_Object *o, Evas_Object_Box_Data *priv, int horizontal, int homogeneous, int extended)
 147 {
 148    Evas_Coord x, y, w, h, xx, yy;
 149    const Eina_List *l;
 150    Evas_Object *obj;
 151    Evas_Coord minw, minh, wdif, hdif;
 152    int count = 0, expand = 0;
 153    double ax, ay;
 154    Evas_Object_Box_Option *opt;
 155
 156    _smart_extents_calculate(o, priv, horizontal, homogeneous, extended);
 157
 158    evas_object_geometry_get(o, &x, &y, &w, &h);
 159
 160    evas_object_size_hint_min_get(o, &minw, &minh);
 161    evas_object_size_hint_align_get(o, &ax, &ay);
 162    count = eina_list_count(priv->children);
 163    if (w < minw)
 164      {
 165         x = x + ((w - minw) * (1.0 - ax));
 166         w = minw;
 167      }
 168    if (h < minh)
 169      {
 170         y = y + ((h - minh) * (1.0 - ay));
 171         h = minh;
 172      }
 173    EINA_LIST_FOREACH(priv->children, l, opt)
 174      {
 175         double wx, wy;
 176
 177         evas_object_size_hint_weight_get(opt->obj, &wx, &wy);
 178         if (horizontal)
 179           {
 180              if (wx > 0.0) expand++;
 181           }
 182         else
 183           {
 184              if (wy > 0.0) expand++;
 185           }
 186      }
 187    if (expand == 0 && (!extended))
 188      {
 189         evas_object_size_hint_align_get(o, &ax, &ay);
 190         if (horizontal)
 191           {
 192              x += (double)(w - minw) * ax;
 193              w = minw;
 194           }
 195         else
 196           {
 197              y += (double)(h - minh) * ay;
 198              h = minh;
 199           }
 200      }
 201    wdif = w - minw;
 202    hdif = h - minh;
 203    xx = x;
 204    yy = y;
 205
 206    Evas_Coord cw = 0, ch = 0, cmaxh = 0, obj_index = 0;
 207
 208    EINA_LIST_FOREACH(priv->children, l, opt)
 209      {
 210         Evas_Coord mnw, mnh, mxw, mxh;
 211         double wx, wy;
 212         int fw, fh, xw, xh;
 213
 214         obj = opt->obj;
 215         evas_object_size_hint_align_get(obj, &ax, &ay);
 216         evas_object_size_hint_weight_get(obj, &wx, &wy);
 217         evas_object_size_hint_min_get(obj, &mnw, &mnh);
 218         evas_object_size_hint_max_get(obj, &mxw, &mxh);
 219         fw = fh = 0;
 220         xw = xh = 0;
 221         if (ax == -1.0) {fw = 1; ax = 0.5;}
 222         if (ay == -1.0) {fh = 1; ay = 0.5;}
 223         if (wx > 0.0) xw = 1;
 224         if (wy > 0.0) xh = 1;
 225         if (horizontal)
 226           {
 227              if (homogeneous)
 228                {
 229                   Evas_Coord ww, hh, ow, oh;
 230
 231                   ww = (w / (Evas_Coord)count);
 232                   hh = h;
 233                   ow = mnw;
 234                   if (fw) ow = ww;
 235                   if ((mxw >= 0) && (mxw < ow))
 236                     ow = mxw;
 237                   oh = mnh;
 238                   if (fh) oh = hh;
 239                   if ((mxh >= 0) && (mxh < oh))
 240                     oh = mxh;
 241                   evas_object_move(obj,
 242                                    xx + (Evas_Coord)(((double)(ww - ow)) * ax),
 243                                    yy + (Evas_Coord)(((double)(hh - oh)) * ay));
 244                   evas_object_resize(obj, ow, oh);
 245                   xx += ww;
 246                }
 247              else
 248                {
 249                            if (extended)
 250                            {
 251                                    Evas_Coord ww, hh, ow, oh;
 252                                    if(wx)
 253                                    {
 254                                            if (mnw != -1 && (w - cw) >= mnw)
 255                                                    ww = w - cw;
 256                                            else
 257                                                    ww = w;
 258                                    }
 259                                    else
 260                                            ww = mnw;
 261                                    hh = _smart_extents_calculate_max_height(o, priv, obj_index);
 262
 263                                    ow = mnw;
 264                                    if (fw) ow = ww;
 265                                    if ((mxw >= 0) && (mxw < ow)) ow = mxw;
 266                                    oh = mnh;
 267                                    if (fh) oh = hh;
 268                                    if ((mxh >= 0) && (mxh < oh)) oh = mxh;
 269
 270                                    if ((cw + ww) > w)
 271                                    {
 272                                            ch += cmaxh;
 273
 274                                            cw = 0;
 275                                            cmaxh = 0;
 276                                    }
 277
 278                                    evas_object_move(obj,
 279                                                    xx + cw + (Evas_Coord)(((double)(ww - ow)) * ax),
 280                                                    yy + ch + (Evas_Coord)(((double)(hh - oh)) * ay));
 281                                    evas_object_resize(obj, ow, oh);
 282
 283                                    cw += ww;
 284                                    if (cmaxh < hh) cmaxh = hh;
 285                            }
 286                            else
 287                            {
 288                                   Evas_Coord ww, hh, ow, oh;
 289
 290                                   ww = mnw;
 291                                   if ((expand > 0) && (xw))
 292                                         {
 293                                            if (expand == 1) ow = wdif;
 294                                            else ow = (w - minw) / expand;
 295                                            wdif -= ow;
 296                                            ww += ow;
 297                                         }
 298                                   hh = h;
 299                                   ow = mnw;
 300                                   if (fw) ow = ww;
 301                                   if ((mxw >= 0) && (mxw < ow)) ow = mxw;
 302                                   oh = mnh;
 303                                   if (fh) oh = hh;
 304                                   if ((mxh >= 0) && (mxh < oh)) oh = mxh;
 305                                   evas_object_move(obj,
 306                                                    xx + (Evas_Coord)(((double)(ww - ow)) * ax),
 307                                                    yy + (Evas_Coord)(((double)(hh - oh)) * ay));
 308                                   evas_object_resize(obj, ow, oh);
 309                                   xx += ww;
 310                            }
 311                }
 312           }
 313         else
 314           {
 315              if (homogeneous)
 316                {
 317                   Evas_Coord ww, hh, ow, oh;
 318
 319                   ww = w;
 320                   hh = (h / (Evas_Coord)count);
 321                   ow = mnw;
 322                   if (fw) ow = ww;
 323                   if ((mxw >= 0) && (mxw < ow)) ow = mxw;
 324                   oh = mnh;
 325                   if (fh) oh = hh;
 326                   if ((mxh >= 0) && (mxh < oh)) oh = mxh;
 327                   evas_object_move(obj,
 328                                    xx + (Evas_Coord)(((double)(ww - ow)) * ax),
 329                                    yy + (Evas_Coord)(((double)(hh - oh)) * ay));
 330                   evas_object_resize(obj, ow, oh);
 331                   yy += hh;
 332                }
 333              else
 334                {
 335                   Evas_Coord ww, hh, ow, oh;
 336
 337                   ww = w;
 338                   hh = mnh;
 339                   if ((expand > 0) && (xh))
 340                     {
 341                        if (expand == 1) oh = hdif;
 342                        else oh = (h - minh) / expand;
 343                        hdif -= oh;
 344                        hh += oh;
 345                     }
 346                   ow = mnw;
 347                   if (fw) ow = ww;
 348                   if ((mxw >= 0) && (mxw < ow)) ow = mxw;
 349                   oh = mnh;
 350                   if (fh) oh = hh;
 351                   if ((mxh >= 0) && (mxh < oh)) oh = mxh;
 352                   evas_object_move(obj,
 353                                    xx + (Evas_Coord)(((double)(ww - ow)) * ax),
 354                                    yy + (Evas_Coord)(((double)(hh - oh)) * ay));
 355                   evas_object_resize(obj, ow, oh);
 356                   yy += hh;
 357                }
 358           }
 359
 360                 obj_index++;
 361      }
 362 }
 363