libs3dw/scrollbar.c

   1 /*
   2  * scrollbar.c
   3  *
   4  * Copyright (C) 2006-2011  Simon Wunderlich <dotslash@packetmixer.de>
   5  *
   6  * This file is part of the s3d Widgets, a Widget Library for s3d.
   7  * See http://s3d.berlios.de/ for more updates.
   8  *
   9  * s3d Widgets is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * s3d Widgets is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with the s3d Widgets; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  22  */
  23
  24
  25 #include <s3d.h>
  26 #include <s3dw.h>
  27 #include <s3dw_int.h>
  28 #include <stdlib.h> /* malloc() */
  29 #include <string.h> /* strdup() */
  30
  31 static void s3dw_scrollbar_draw(s3dw_widget *widget)
  32 {
  33         s3dw_scrollbar *scrollbar = (s3dw_scrollbar *)widget;
  34         float back_vertices[3*32];
  35         int i, j;
  36         unsigned int back_polygons[44*4] = {
  37                 /* box outside */
  38                 0, 4, 5, 0,       0, 5, 1, 0,
  39                 1, 5, 6, 0,       1, 6, 2, 0,
  40                 3, 2, 7, 0,       7, 2, 6, 0,
  41                 3, 7, 4, 0,       3, 4, 0, 0,
  42
  43                 /* sides of big box */
  44                 12, 13, 9, 0,       12, 9, 8, 0,
  45                 14, 15, 11, 0,       14, 11, 10, 0,
  46
  47                 /* inlay box */
  48                 9, 16, 17, 0,       9, 17, 10, 0,
  49                 17, 18, 14, 0,       17, 14, 10, 0,
  50                 13, 14, 18, 0,       13, 18, 19, 0,
  51                 13, 19, 16, 0,       13, 16, 9, 0,
  52
  53                 /* inlay box back */
  54                 19, 18, 17, 0,       19, 17, 16, 0,
  55
  56                 /* up arrow background surface */
  57                 7, 6, 15, 0,
  58                 7, 15, 14, 0,
  59                 7, 14, 13, 0,
  60                 7, 13, 12, 0,
  61
  62                 /* up arrow face */
  63                 20, 23, 24, 0,       20, 24, 21, 0,
  64                 21, 24, 25, 0,       21, 25, 22, 0,
  65                 20, 22, 25, 0,       20, 25, 23, 0,
  66                 23, 25, 24, 0,
  67
  68                 /* down arrow background surface */
  69                 4, 8, 9, 0,
  70                 4, 9, 10, 0,
  71                 4, 10, 11, 0,
  72                 4, 11, 5, 0,
  73
  74                 /* down arrow face */
  75                 26, 27, 31, 0,       26, 31, 30, 0,
  76                 31, 27, 28, 0,       31, 28, 29, 0,
  77                 26, 30, 29, 0,       26, 29, 28, 0,
  78                 30, 31, 29, 0
  79
  80         };
  81         unsigned int bar_polygons[14*4] = {
  82                 /* front */
  83                 0, 4, 5, 0,       0, 5, 1, 0,
  84                 1, 5, 6, 0,       1, 6, 2, 0,
  85                 3, 2, 6, 0,       3, 6, 7, 0,
  86                 3, 7, 4, 0,       3, 4, 0, 0,
  87
  88                 7, 6, 4, 0,       4, 6, 5, 0,
  89
  90                 /* back, only visible sides */
  91                 2, 3, 11, 0,       2, 11, 10, 0,
  92                 1, 9, 8, 0,       1, 8, 0, 0
  93         };
  94         float bar_vertices[12*3];
  95         float w, h;
  96         float temp;
  97
  98
  99         w = (scrollbar->type == S3DW_SBAR_VERT) ? widget->width : widget->height;
 100         h = (scrollbar->type == S3DW_SBAR_VERT) ? widget->height : widget->width;
 101         /* outside/big  box */
 102         back_vertices[0*3+0] = w * 0.0;
 103         back_vertices[0*3+1] = 0.0 - h;
 104         back_vertices[0*3+2] = 0.0;
 105         back_vertices[1*3+0] = w * 1.0;
 106         back_vertices[1*3+1] = 0.0 - h;
 107         back_vertices[1*3+2] = 0.0;
 108         back_vertices[2*3+0] = w * 1.0;
 109         back_vertices[2*3+1] = 0.0;
 110         back_vertices[2*3+2] = 0.0;
 111         back_vertices[3*3+0] = w * 0.0;
 112         back_vertices[3*3+1] = 0.0;
 113         back_vertices[3*3+2] = 0.0;
 114         back_vertices[4*3+0] = w * 0.125;
 115         back_vertices[4*3+1] = w * 0.125 - h;
 116         back_vertices[4*3+2] = 0.25;
 117         back_vertices[5*3+0] = w * 0.875;
 118         back_vertices[5*3+1] = w * 0.125 - h;
 119         back_vertices[5*3+2] = 0.25;
 120         back_vertices[6*3+0] = w * 0.875;
 121         back_vertices[6*3+1] = w * -0.125;
 122         back_vertices[6*3+2] = 0.25;
 123         back_vertices[7*3+0] = w * 0.125;
 124         back_vertices[7*3+1] = w * -0.125;
 125         back_vertices[7*3+2] = 0.25;
 126
 127         /* downside inlay */
 128         back_vertices[8*3+0] = w * 0.125;
 129         back_vertices[8*3+1] = w - h;
 130         back_vertices[8*3+2] = 0.25;
 131         back_vertices[9*3+0] = w * 0.25;
 132         back_vertices[9*3+1] = w - h;
 133         back_vertices[9*3+2] = 0.25;
 134         back_vertices[10*3+0] = w * 0.75;
 135         back_vertices[10*3+1] = w - h;
 136         back_vertices[10*3+2] = 0.25;
 137         back_vertices[11*3+0] = w * 0.875;
 138         back_vertices[11*3+1] = w - h;
 139         back_vertices[11*3+2] = 0.25;
 140
 141         /* upside inlay */
 142         back_vertices[12*3+0] = w * 0.125;
 143         back_vertices[12*3+1] = -w;
 144         back_vertices[12*3+2] = 0.25;
 145         back_vertices[13*3+0] = w * 0.25;
 146         back_vertices[13*3+1] = -w;
 147         back_vertices[13*3+2] = 0.25;
 148         back_vertices[14*3+0] = w * 0.75;
 149         back_vertices[14*3+1] = -w;
 150         back_vertices[14*3+2] = 0.25;
 151         back_vertices[15*3+0] = w * 0.875;
 152         back_vertices[15*3+1] = -w;
 153         back_vertices[15*3+2] = 0.25;
 154
 155         /* inlay box */
 156         back_vertices[16*3+0] = w * 0.25;
 157         back_vertices[16*3+1] = w * 0.125 - h + w;
 158         back_vertices[16*3+2] = 0.125;
 159         back_vertices[17*3+0] = w * 0.75;
 160         back_vertices[17*3+1] = w * 0.125 - h + w;
 161         back_vertices[17*3+2] = 0.125;
 162         back_vertices[18*3+0] = w * 0.75;
 163         back_vertices[18*3+1] = w * -0.125 - w;
 164         back_vertices[18*3+2] = 0.125;
 165         back_vertices[19*3+0] = w * 0.25;
 166         back_vertices[19*3+1] = w * -0.125 - w;
 167         back_vertices[19*3+2] = 0.125;
 168
 169         /* arrow up */
 170         back_vertices[20*3+0] = w * 0.25;
 171         back_vertices[20*3+1] = w * -0.875;
 172         back_vertices[20*3+2] = 0.25;
 173         back_vertices[21*3+0] = w * 0.75;
 174         back_vertices[21*3+1] = w * -0.875;
 175         back_vertices[21*3+2] = 0.25;
 176         back_vertices[22*3+0] = w * 0.5;
 177         back_vertices[22*3+1] = w * -0.25;
 178         back_vertices[22*3+2] = 0.25;
 179         back_vertices[23*3+0] = w * 0.375;
 180         back_vertices[23*3+1] = w * -0.75;
 181         back_vertices[23*3+2] = 0.375;
 182         back_vertices[24*3+0] = w * 0.625;
 183         back_vertices[24*3+1] = w * -0.75;
 184         back_vertices[24*3+2] = 0.375;
 185         back_vertices[25*3+0] = w * 0.5;
 186         back_vertices[25*3+1] = w * -0.375;
 187         back_vertices[25*3+2] = 0.375;
 188
 189         /* arrow down */
 190         back_vertices[26*3+0] = w * 0.25;
 191         back_vertices[26*3+1] = -h + w * 0.875;
 192         back_vertices[26*3+2] = 0.25;
 193         back_vertices[27*3+0] = w * 0.75;
 194         back_vertices[27*3+1] = -h + w * 0.875;
 195         back_vertices[27*3+2] = 0.25;
 196         back_vertices[28*3+0] = w * 0.5;
 197         back_vertices[28*3+1] = -h + w * 0.25;
 198         back_vertices[28*3+2] = 0.25;
 199         back_vertices[29*3+0] = w * 0.375;
 200         back_vertices[29*3+1] = -h + w * 0.75;
 201         back_vertices[29*3+2] = 0.375;
 202         back_vertices[30*3+0] = w * 0.625;
 203         back_vertices[30*3+1] = -h + w * 0.75;
 204         back_vertices[30*3+2] = 0.375;
 205         back_vertices[31*3+0] = w * 0.5;
 206         back_vertices[31*3+1] = -h + w * 0.375;
 207         back_vertices[31*3+2] = 0.375;
 208
 209         /* scrollbar bar poinst */
 210         bar_vertices[0*3+0] = w * 0.25;
 211         bar_vertices[0*3+1] = -(h - 3) + w * 0.125;
 212         bar_vertices[0*3+2] = 0.25;
 213         bar_vertices[1*3+0] = w * 0.75;
 214         bar_vertices[1*3+1] = -(h - 3) + w * 0.125;
 215         bar_vertices[1*3+2] = 0.25;
 216         bar_vertices[2*3+0] = w * 0.75;
 217         bar_vertices[2*3+1] = -w * 0.125;
 218         bar_vertices[2*3+2] = 0.25;
 219         bar_vertices[3*3+0] = w * 0.25;
 220         bar_vertices[3*3+1] = -w * 0.125;
 221         bar_vertices[3*3+2] = 0.25;
 222
 223         bar_vertices[4*3+0] = w * 0.125;
 224         bar_vertices[4*3+1] = -(h - 3) + w * 0.25;
 225         bar_vertices[4*3+2] = 0.375;
 226         bar_vertices[5*3+0] = w * 0.875;
 227         bar_vertices[5*3+1] = -(h - 3) + w * 0.25;
 228         bar_vertices[5*3+2] = 0.375;
 229         bar_vertices[6*3+0] = w * 0.875;
 230         bar_vertices[6*3+1] = -w * 0.25;
 231         bar_vertices[6*3+2] = 0.375;
 232         bar_vertices[7*3+0] = w * 0.125;
 233         bar_vertices[7*3+1] = -w * 0.25;
 234         bar_vertices[7*3+2] = 0.375;
 235
 236         bar_vertices[8*3+0] = w * 0.125;
 237         bar_vertices[8*3+1] = -(h - 3) + w * 0.25;
 238         bar_vertices[8*3+2] = 0.175;
 239         bar_vertices[9*3+0] = w * 0.875;
 240         bar_vertices[9*3+1] = -(h - 3) + w * 0.25;
 241         bar_vertices[9*3+2] = 0.175;
 242         bar_vertices[10*3+0] = w * 0.875;
 243         bar_vertices[10*3+1] = -w * 0.25;
 244         bar_vertices[10*3+2] = 0.175;
 245         bar_vertices[11*3+0] = w * 0.125;
 246         bar_vertices[11*3+1] = -w * 0.25;
 247         bar_vertices[11*3+2] = 0.175;
 248
 249
 250
 251
 252         if (scrollbar->type == S3DW_SBAR_HORI) { /* rotate x and y for horizontal scrollbar */
 253                 for (i = 0; i < 32; i++) {
 254                         temp = back_vertices[i*3];
 255                         back_vertices[i*3] = -back_vertices[i*3+1];
 256                         back_vertices[i*3+1] = -temp;
 257                 }
 258                 for (i = 0; i < 44; i++) { /* change clockwiseness */
 259                         j = back_polygons[i*4];
 260                         back_polygons[i*4] = back_polygons[i*4+1];
 261                         back_polygons[i*4+1] = j;
 262                 }
 263                 for (i = 0; i < 12; i++) {
 264                         temp = bar_vertices[i*3];
 265                         bar_vertices[i*3] = -bar_vertices[i*3+1];
 266                         bar_vertices[i*3+1] = -temp;
 267                 }
 268                 for (i = 0; i < 14; i++) { /* change clockwiseness */
 269                         j = bar_polygons[i*4];
 270                         bar_polygons[i*4] = bar_polygons[i*4+1];
 271                         bar_polygons[i*4+1] = j;
 272                 }
 273         }
 274
 275         widget->oid = s3d_new_object();
 276         scrollbar->loid = s3d_new_object();
 277         scrollbar->roid = s3d_new_object();
 278         scrollbar->baroid = s3d_new_object();
 279         s3d_push_materials_a(widget->oid, widget->style->input_mat, 1);
 280         s3d_push_materials_a(scrollbar->loid, widget->style->input_mat, 1);
 281         s3d_push_materials_a(scrollbar->roid, widget->style->input_mat, 1);
 282         s3d_push_materials_a(scrollbar->baroid, widget->style->input_mat, 1);
 283         s3d_push_vertices(widget->oid, back_vertices, 20);
 284         s3d_push_vertices(scrollbar->loid, back_vertices, 32);
 285         s3d_push_vertices(scrollbar->roid, back_vertices, 32);
 286         s3d_push_vertices(scrollbar->baroid, bar_vertices, 12);
 287
 288         s3d_push_polygons(widget->oid, back_polygons , 22);
 289         s3d_push_polygons(scrollbar->loid, back_polygons + 4*22, 11);
 290         s3d_push_polygons(scrollbar->roid, back_polygons + 4*33, 11);
 291         s3d_push_polygons(scrollbar->baroid, bar_polygons , 14);
 292         s3d_link(widget->oid, widget->parent->oid);
 293         s3d_link(scrollbar->loid, widget->oid);
 294         s3d_link(scrollbar->roid, widget->oid);
 295         s3d_link(scrollbar->baroid, widget->oid);
 296         s3d_translate(widget->oid, widget->x, -widget->y, 0);
 297         if (scrollbar->type == S3DW_SBAR_VERT)
 298                 s3d_translate(scrollbar->baroid, 0, -1.5, 0);
 299         else
 300                 s3d_translate(scrollbar->baroid, 1.5, 0, 0);
 301
 302 }
 303 /* show the scrollbar */
 304 void s3dw_scrollbar_show(s3dw_widget *widget)
 305 {
 306         s3dw_scrollbar *scrollbar = (s3dw_scrollbar *)widget;
 307         s3d_flags_on(widget->oid, S3D_OF_VISIBLE | S3D_OF_SELECTABLE);
 308         s3d_flags_on(scrollbar->loid, S3D_OF_VISIBLE | S3D_OF_SELECTABLE);
 309         s3d_flags_on(scrollbar->roid, S3D_OF_VISIBLE | S3D_OF_SELECTABLE);
 310         s3d_flags_on(scrollbar->baroid, S3D_OF_VISIBLE | S3D_OF_SELECTABLE);
 311
 312 }
 313 /* hides the scrollbar */
 314 void s3dw_scrollbar_hide(s3dw_widget *widget)
 315 {
 316         s3dw_scrollbar *scrollbar = (s3dw_scrollbar *)widget;
 317         s3d_flags_off(widget->oid, S3D_OF_VISIBLE | S3D_OF_SELECTABLE);
 318         s3d_flags_off(scrollbar->loid, S3D_OF_VISIBLE | S3D_OF_SELECTABLE);
 319         s3d_flags_off(scrollbar->roid, S3D_OF_VISIBLE | S3D_OF_SELECTABLE);
 320         s3d_flags_off(scrollbar->baroid, S3D_OF_VISIBLE | S3D_OF_SELECTABLE);
 321 }
 322
 323 /* create a new scrollbar in the surface */
 324 s3dw_scrollbar *s3dw_scrollbar_new(s3dw_widget *parent, int type, float posx, float posy, float length)
 325 {
 326         s3dw_scrollbar *scrollbar;
 327         s3dw_widget *widget;
 328         scrollbar = (s3dw_scrollbar *)malloc(sizeof(s3dw_scrollbar));
 329         widget = s3dw_widget_new((s3dw_widget *)scrollbar);
 330         widget->type = S3DW_TSCROLLBAR;
 331         if ((scrollbar->type = type) == S3DW_SBAR_HORI) {
 332                 widget->height = 1;
 333                 widget->width = length;
 334         } else {
 335                 widget->width = 1;
 336                 widget->height = length;
 337         }
 338         widget->x = posx;
 339         widget->y = posy;
 340         widget->oid = -1;
 341         scrollbar->loid = -1;
 342         scrollbar->roid = -1;
 343         scrollbar->baroid = -1;
 344         scrollbar->lonclick = s3dw_nothing;
 345         scrollbar->ronclick = s3dw_nothing;
 346         s3dw_widget_append(parent, widget);
 347         s3dw_scrollbar_draw(widget);
 348         return scrollbar;
 349 }
 350
 351 void s3dw_scrollbar_erase(s3dw_widget *widget)
 352 {
 353         s3dw_scrollbar *scrollbar = (s3dw_scrollbar *)widget;
 354         s3d_del_object(widget->oid);
 355         s3d_del_object(scrollbar->loid);
 356         s3d_del_object(scrollbar->roid);
 357         s3d_del_object(scrollbar->baroid);
 358 }
 359 /* destroy the scrollbar */
 360 void s3dw_scrollbar_destroy(s3dw_widget *widget)
 361 {
 362         s3dw_scrollbar *scrollbar = (s3dw_scrollbar *)widget;
 363         s3dw_scrollbar_erase(widget);
 364         free(scrollbar);
 365 }
 366 /* handle key events */
 367 int s3dw_scrollbar_event_key(s3dw_widget *S3DUNUSED(widget), struct s3d_key_event *S3DUNUSED(keys))
 368 {
 369         return 0;
 370 }
 371 /* handle click events */
 372 int s3dw_scrollbar_event_click(s3dw_widget *widget, uint32_t oid)
 373 {
 374         s3dw_scrollbar *scrollbar = (s3dw_scrollbar *)widget;
 375         if (scrollbar->loid == (int)oid) {
 376                 scrollbar->lonclick(widget);
 377                 return 1;
 378         }
 379         if (scrollbar->roid == (int)oid) {
 380                 scrollbar->ronclick(widget);
 381                 return 1;
 382         }
 383
 384         return 0;
 385 }