git.maemo.org Git - monky/blob - lua_scripts/text.lua

   1 --[[TEXT WIDGET v1.. by Wlourf 25/06/2010
   2 This widget can drawn texts set in the "text_settings" table with some parameters
   3 http://u-scripts.blogspot.com/2010/06/text-widget.html
   4
   5 The parameters (all optionals) are :
   6 text        - text to display, default = "Conky is good for you"
   7                           use conky_parse to display conky value ie text=conly_parse("${cpu cpu1}")
   8             - coordinates below are relative to top left corner of the conky window
   9 x           - x coordinate of first letter (bottom-left), default = center of conky window
  10 y           - y coordinate of first letter (bottom-left), default = center of conky window
  11 h_align         - horizontal alignement of text relative to point (x,y), default="l"
  12                           available values are "l": left, "c" : center, "r" : right
  13 v_align         - vertical alignment of text relative to point (x,y), default="b"
  14                           available values "t" : top, "m" : middle, "b" : bottom
  15 font_name   - name of font to use, default = Free Sans
  16 font_size   - size of font to use, default = 14
  17 italic      - display text in italic (true/false), default=false
  18 oblique     - display text in oblique (true/false), default=false (I don' see the difference with italic!)
  19 bold        - display text in bold (true/false), default=false
  20 angle       - rotation of text in degrees, default = 0 (horizontal)
  21 colour      - table of colours for text, default = plain white {{1,0xFFFFFF,1}}
  22                           this table contains one or more tables with format {P,C,A}
  23               P=position of gradient (0 = beginning of text, 1= end of text)
  24               C=hexadecimal colour
  25               A=alpha (opacity) of color (0=invisible,1=opacity 100%)
  26               Examples :
  27               for a plain color {{1,0x00FF00,0.5}}
  28               for a gradient with two colours {{0,0x00FF00,0.5},{1,0x000033,1}}
  29               or {{0.5,0x00FF00,1},{1,0x000033,1}} -with this one, gradient will start in the middle of the text
  30               for a gradient with three colours {{0,0x00FF00,0.5},{0.5,0x000033,1},{1,0x440033,1}}
  31                           and so on ...
  32 orientation     - in case of gradient, "orientation" defines the starting point of the gradient, default="ww"
  33                           there are 8 available starting points : "nw","nn","ne","ee","se","ss","sw","ww"
  34                           (n for north, w for west ...)
  35                           theses 8 points are the 4 corners + the 4 middles of text's outline
  36                           so a gradient "nn" will go from "nn" to "ss" (top to bottom, parallele to text)
  37                           a gradient "nw" will go from "nw" to "se" (left-top corner to right-bottom corner)
  38 radial          - define a radial gradient (if present at the same time as "orientation", "orientation" will have no effect)
  39                           this parameter is a table with 6 numbers : {xa,ya,ra,xb,yb,rb}
  40                           they define two circle for the gradient :
  41                           xa, ya, xb and yb are relative to x and y values above
  42 reflection_alpha    - add a reflection effect (values from 0 to 1) default = 0 = no reflection
  43                       other values = starting opacity
  44 reflection_scale    - scale of the reflection (default = 1 = height of text)
  45 reflection_length   - length of reflection, define where the opacity will be set to zero
  46                                           calues from 0 to 1, default =1
  47 skew_x,skew_y    - skew text around x or y axis
  48
  49
  50 Needs conky 1.8.0
  51
  52 To call this script in the conkyrc, in before-TEXT section:
  53     lua_load /path/to/the/lua/script/text.lua
  54     lua_draw_hook_pre draw_text
  55
  56 v1.0    07/06/2010, Original release
  57 v1.1    10/06/2010      Add "orientation" parameter
  58 v1.2    15/06/2010  Add "h_align", "v_align" and "radial" parameters
  59 v1.3    25/06/2010  Add "reflection_alpha", "reflection_length", "reflection_scale",
  60                     "skew_x" et "skew_y"
  61
  62
  63 ]]
  64
  65 require 'cairo'
  66
  67 function conky_draw_text()
  68         local col0,col1,col2=0xFFFFCC,0xCCFF99,0x99FF00
  69         local colbg=0x99CCFF
  70     local text_settings={
  71                 {
  72                                 text=conky_parse("${time %I:%M%p %D}"),
  73                                 font_size=24,
  74                                 bold=true,
  75                                 font_name="Nokia Pure",
  76                                 h_align="l",
  77                                 v_align="t",
  78                                 x=5,
  79                                 y=5,
  80                                 reflection_alpha=0,
  81                                 reflection_length=0,
  82  colour={
  83          {0.98,    0xFF0000,1},
  84          {0.99,    0xFFCC00,1},
  85          {1.00,    0xFF0000,1},
  86          },
  87  radial={400,-700,0,100,-1000,1024}
  88                 },
  89                 {
  90                                 text=conky_parse("$sysname $kernel on $machine - $uptime"),
  91                                 font_size=16,
  92                                 bold=true,
  93                                 font_name="Nokia Pure",
  94                                 h_align="r",
  95                                 x=850,
  96                                 y=15,
  97                                 reflection_alpha=0,
  98                                 reflection_length=0,
  99                                 colour={{0,col0,0.75},{1,colbg,0.75}},
 100                 },
 101                 {
 102                                 text="Conky v"..conky_parse("$conky_version").." - Lance Colton",
 103                                 font_size=16,
 104                                 bold=true,
 105                                 font_name="Nokia Pure",
 106                                 h_align="r",
 107                                 x=850,
 108                                 y=28,
 109                                 reflection_alpha=0,
 110                                 reflection_length=0,
 111                                 colour={{0,col0,0.75},{1,colbg,0.75}},
 112                 },
 113                 {
 114                                 text=conky_parse("$freq MHz"),
 115                                 font_name="Nokia Pure",
 116                                 font_size=16,
 117                                 h_align="l",
 118                                 v_align="t",
 119                                 bold=true,
 120                                 x=20,
 121                                 y=60,
 122                                 reflection_alpha=0,
 123                                 reflection_length=0,
 124                                 colour={{0,col0,1},{0.5,colbg,1}},
 125                                 orientation="nn",
 126                 },
 127                 {
 128                     text=conky_parse("${battery_temp}").."\194\176",--yes i had to do the degree symbol like that...
 129                     x=845,
 130                     y=69,
 131                     v_align="m",
 132                     h_align="r",
 133                     font_name="Nokia Pure",
 134                     font_size=14,
 135                         colour={{0,col0,1},{0.5,colbg,1}},
 136                                 orientation="nn",
 137                 reflection_alpha=0,
 138                 reflection_length=0,
 139         },
 140                 {
 141                     text=conky_parse("${battery_rate}mA"),
 142                     x=750,
 143                     y=69,
 144                     v_align="m",
 145                     h_align="l",
 146                     font_name="Nokia Pure",
 147                     font_size=14,
 148                         colour={{0,col0,1},{0.5,colbg,1}},
 149                                 orientation="nn",
 150                 reflection_alpha=0,
 151                 reflection_length=0,
 152         },
 153         {
 154                     text=conky_parse("${battery_short}   ${battery_volts}mV"),
 155                     x=845,
 156                     y=45,
 157                     v_align="m",
 158                     h_align="r",
 159                     font_name="Nokia Pure",
 160                     font_size=14,
 161                         colour={{0,col0,1},{0.5,colbg,1}},
 162                                 orientation="nn",
 163                 reflection_alpha=0,
 164                 reflection_length=0,
 165         },
 166         {
 167                     text=conky_parse("${cell_radio_dbm}".."dBm"),
 168                         x=510,
 169                     y=50,
 170                     font_name="Nokia Pure",
 171                     font_size=14,
 172                         colour={{0,col0,1},{0.5,colbg,1}},
 173                                 orientation="nn",
 174                 reflection_alpha=0.0,
 175                 reflection_length=0.0,
 176         },
 177         {
 178                     text=conky_parse('${cpu}').."%",
 179                         x=223,
 180                     y=67,
 181                     v_align="t",
 182                     h_align="l",
 183                     font_name="Nokia Pure",
 184                     font_size=18,
 185                         colour={{0,col0,1},{0.5,colbg,1}},
 186                                 orientation="ww",
 187                 reflection_alpha=0,
 188                 reflection_length=0,
 189         },
 190         {
 191                     text=conky_parse('${memperc}').."% RAM",
 192                     x=223,
 193                     y=101,
 194                     v_align="t",
 195                     font_name="Nokia Pure",
 196                     font_size=18,
 197                         colour={{0,col0,1},{0.5,colbg,1}},
 198                                 orientation="nn",
 199                                 reflection_alpha=0,
 200                                 reflection_length=0,
 201         },
 202         {
 203                     text=conky_parse('${fs_used /} / ${fs_size /} (${fs_free /})'),
 204                     x=5,
 205                     y=125,
 206                     v_align="t",
 207                     font_name="Nokia Pure",
 208                     font_size=16,
 209                         colour={{conky_parse('${fs_used_perc /}')/100,0x000000,1},{1,0xFFFFFF,1}},
 210                                 orientation="ww",
 211                                 reflection_alpha=0,
 212                                 reflection_length=0,
 213         },
 214         {
 215                     text="/",
 216                     x=220,
 217                     y=124,
 218                     v_align="t",
 219                     font_name="Nokia Pure",
 220                     font_size=18,
 221                         colour={{0,0x336633,1},{1,col0,1}},
 222                         bold=true,
 223                                 orientation="ww",
 224                                 reflection_alpha=0,
 225                                 reflection_length=0,
 226         },
 227         {
 228                     text=conky_parse('${fs_used /home} / ${fs_size /home} (${fs_free /home})'),
 229                     x=5,
 230                     y=145,
 231                     v_align="t",
 232                     font_name="Nokia Pure",
 233                     font_size=16,
 234                         colour={{conky_parse('${fs_used_perc /home}')/100,0x000000,1},{1,0xFFFFFF,1}},
 235                                 orientation="ww",
 236                                 reflection_alpha=0,
 237                                 reflection_length=0,
 238         },
 239         {
 240                     text="/home",
 241                     x=220,
 242                     y=144,
 243                     v_align="t",
 244                     font_name="Nokia Pure",
 245                     font_size=18,
 246                         colour={{0,0x336633,1},{1,col0,1}},
 247                         bold=true,
 248                                 orientation="ww",
 249                                 reflection_alpha=0,
 250                                 reflection_length=0,
 251         },
 252         {
 253                     text=conky_parse('${fs_used /home/user/MyDocs} / ${fs_size /home/user/MyDocs} (${fs_free /home/user/MyDocs})'),
 254                     x=5,
 255                     y=165,
 256                     v_align="t",
 257                     font_name="Nokia Pure",
 258                     font_size=16,
 259                         colour={{conky_parse('${fs_used_perc /home/user/MyDocs}')/100-.1,0x000000,1},{1,0xFFFFFF,1}},
 260                                 orientation="ww",
 261                                 reflection_alpha=0,
 262                                 reflection_length=0,
 263                                 DrawMe=conky_parse("${if_mounted /home/user/MyDocs}1$endif")
 264         },
 265         {
 266                     text="MyDocs",
 267                     x=220,
 268                     y=164,
 269                     v_align="t",
 270                     font_name="Nokia Pure",
 271                     font_size=18,
 272                         colour={{0,0x336633,1},{1,col0,1}},
 273                         bold=true,
 274                                 orientation="ww",
 275                                 reflection_alpha=0,
 276                                 reflection_length=0,
 277                                 DrawMe=conky_parse("${if_mounted /home/user/MyDocs}1$endif")
 278         },
 279         {
 280                     text="DiskIO",
 281                     x=520,
 282                     y=101,
 283                     v_align="t",
 284                     font_name="Nokia Pure",
 285                     font_size=18,
 286                         colour={{0,0xcc6600,1},{1,col0,1}},
 287                         bold=true,
 288                                 orientation="ww",
 289                                 reflection_alpha=0,
 290                                 reflection_length=0,
 291         },
 292         {
 293                     text="Charge Rate",
 294                     x=720,
 295                     y=101,
 296                     v_align="t",
 297                     font_name="Nokia Pure",
 298                     font_size=18,
 299                         colour={{0,0xFF0000,1},{1,col0,1}},
 300                         bold=true,
 301                                 orientation="ww",
 302                                 reflection_alpha=0,
 303                                 reflection_length=0,
 304         },
 305
 306  --[[   {
 307                     text=conky_parse('${fs_used /media/mmc1} / ${fs_size /media/mmc1} (${fs_free /media/mmc1})'),
 308                     x=5,
 309                     y=175,
 310                     v_align="t",
 311                     font_name="Nokia Pure",
 312                     font_size=16,
 313                         colour={{conky_parse('${fs_used_perc /media/mmc1}')/100-.1,0x000000,1},{1,0xFFFFFF,1}},
 314                                 orientation="ww",
 315                                 reflection_alpha=0,
 316                                 reflection_length=0,
 317                                 DrawMe=conky_parse("${if_mounted /media/mmc1}1$endif")
 318         },
 319         {
 320                     text="SDCard",
 321                     x=220,
 322                     y=174,
 323                     v_align="t",
 324                     font_name="Nokia Pure",
 325                     font_size=18,
 326                         colour={{0,0x336633,1},{1,col0,1}},
 327                         bold=true,
 328                                 orientation="ww",
 329                                 reflection_alpha=0,
 330                                 reflection_length=0,
 331                                 DrawMe=conky_parse("${if_mounted /media/mmc1}1$endif"),
 332         },
 333                 ]]
 334         {
 335                     text=conky_parse('${wireless_essid wlan0}'),
 336                         x=427,
 337                     y=202,
 338                     h_align="c",
 339                     v_align="m",
 340                     font_name="Nokia Pure",
 341                     font_size=18,
 342                         colour={{0,col0,1},{0.5,colbg,1}},
 343                                 orientation="nn",
 344                 reflection_alpha=0,
 345                 reflection_length=0,
 346                 DrawMe=conky_parse("${if_up wlan0}1${else}0$endif"),
 347         },
 348         {
 349                     text="GPRS",
 350                         x=427,
 351                     y=201,
 352                     h_align="c",
 353                     v_align="m",
 354                     font_name="Nokia Pure",
 355                     font_size=18,
 356                         colour={{0,col0,1},{0.5,colbg,1}},
 357                                 orientation="nn",
 358                 reflection_alpha=0,
 359                 reflection_length=0,
 360                 DrawMe=conky_parse("${if_up gprs0}1${else}0$endif"),
 361         },
 362         {
 363                     text=conky_parse('${wireless_link_qual_perc wlan0}')..'%',
 364                         x=427,
 365                     y=226,
 366                     h_align="c",
 367                     v_align="m",
 368                     font_name="Nokia Pure",
 369                     font_size=14,
 370                         colour={{0,col0,1},{0.5,colbg,1}},
 371                                 orientation="nn",
 372                 reflection_alpha=0,
 373                 reflection_length=0,
 374                 DrawMe=conky_parse("${if_up wlan0}1${else}0$endif"),
 375         },
 376         {
 377                     text='Up '..conky_parse('${upspeedf wlan0}') + conky_parse('${upspeedf gprs0}'),
 378                         x=225,
 379                     y=223,
 380                     h_align="l",
 381                     v_align="m",
 382                     font_name="LEDFont",
 383                     font_size=22,
 384                     bold=true,
 385                         colour={{0,0xcc0066,1}},
 386                                 orientation="ww",
 387                 reflection_alpha=0,
 388                 reflection_length=0,
 389                 DrawMe=conky_parse("${if_up wlan0}1${else}0$endif"),
 390         },
 391         {
 392                     text=conky_parse('${downspeedf wlan0}') + conky_parse('${downspeedf gprs0}')..' Down',
 393                         x=650,
 394                     y=223,
 395                     h_align="r",
 396                     v_align="m",
 397                     font_name="LEDFont",
 398                     font_size=22,
 399                     bold=true,
 400                         colour={{0,0xcc0066,1}},
 401                                 orientation="ww",
 402                 reflection_alpha=0,
 403                 reflection_length=0,
 404                 DrawMe=conky_parse("${if_up wlan0}1${else}0$endif"),
 405         },
 406    --[[     {
 407                     text='Up '..conky_parse('${upspeed gprs0}'),
 408                         x=225,
 409                     y=223,
 410                     h_align="l",
 411                     v_align="m",
 412                     font_name="LEDFont",
 413                     font_size=22,
 414                     bold=true,
 415                         colour={{0,0xcc0066,1}},
 416                                 orientation="ww",
 417                 reflection_alpha=0,
 418                 reflection_length=0,
 419                 DrawMe=conky_parse("${if_up gprs0}1${else}0$endif"),
 420         },
 421         {
 422                     text=conky_parse('${downspeed gprs0}')..' Down',
 423                         x=650,
 424                     y=223,
 425                     h_align="r",
 426                     v_align="m",
 427                     font_name="LEDFont",
 428                     font_size=22,
 429                     bold=true,
 430                         colour={{0,0xcc0066,1}},
 431                                 orientation="ww",
 432                 reflection_alpha=0,
 433                 reflection_length=0,
 434                 DrawMe=conky_parse("${if_up gprs0}1${else}0$endif"),
 435         },]]
 436     }
 437     if conky_window == nil then return end
 438     if tonumber(conky_parse("$updates"))<3 then return end
 439         local cs = cairo_xlib_surface_create(conky_window.display, conky_window.drawable, conky_window.visual, conky_window.width, conky_window.height)
 440     for i,v in pairs(text_settings) do
 441         cr = cairo_create (cs)
 442                         display_text(v)
 443             cairo_destroy(cr)
 444             cr = nil
 445     end
 446         cairo_surface_destroy(cs)
 447 end
 448
 449 function rgb_to_r_g_b2(tcolour)
 450     local colour,alpha=tcolour[2],tcolour[3]
 451     return ((colour / 0x10000) % 0x100) / 255., ((colour / 0x100) % 0x100) / 255., (colour % 0x100) / 255., alpha
 452 end
 453
 454 function display_text(t)
 455         if t.DrawMe~=nil and t.DrawMe ~= "1" then return end
 456         local function set_pattern(te)
 457                 --this function set the pattern
 458                 if #t.colour==1 then
 459                     cairo_set_source_rgba(cr,rgb_to_r_g_b2(t.colour[1]))
 460                 else
 461                         local pat
 462                         if t.radial==nil then
 463                                 local pts=linear_orientation(t,te)
 464                                 pat = cairo_pattern_create_linear (pts[1],pts[2],pts[3],pts[4])
 465                         else
 466                                 pat = cairo_pattern_create_radial (t.radial[1],t.radial[2],t.radial[3],t.radial[4],t.radial[5],t.radial[6])
 467                         end
 468                     for i=1, #t.colour do
 469                         cairo_pattern_add_color_stop_rgba (pat, t.colour[i][1], rgb_to_r_g_b2(t.colour[i]))
 470                     end
 471                     cairo_set_source (cr, pat)
 472                         cairo_pattern_destroy(pat)
 473                 end
 474     end
 475
 476     --set default values if needed
 477     if t.text==nil then t.text="Conky is good for you !" end
 478     if t.x==nil then t.x = conky_window.width/2 end
 479     if t.y==nil then t.y = conky_window.height/2 end
 480     if t.colour==nil then t.colour={{1,0xFFFFFF,1}} end
 481     if t.font_name==nil then t.font_name="Free Sans" end
 482     if t.font_size==nil then t.font_size=14 end
 483     if t.angle==nil then t.angle=0 end
 484     if t.italic==nil then t.italic=false end
 485     if t.oblique==nil then t.oblique=false end
 486     if t.bold==nil then t.bold=false end
 487     if t.radial ~= nil then
 488         if #t.radial~=6 then
 489                 print ("error in radial table")
 490                 t.radial=nil
 491         end
 492     end
 493     if t.orientation==nil then t.orientation="ww" end
 494     if t.h_align==nil then t.h_align="l" end
 495     if t.v_align==nil then t.v_align="b" end
 496     if t.reflection_alpha == nil then t.reflection_alpha=0 end
 497     if t.reflection_length == nil then t.reflection_length=1 end
 498     if t.reflection_scale == nil then t.reflection_scale=1 end
 499     if t.rotx==nil then t.rotx=0 end
 500     if t.roty==nil then t.roty=0 end
 501     cairo_translate(cr,t.x,t.y)
 502     cairo_rotate(cr,t.angle*math.pi/180)
 503     cairo_save(cr)
 504     local slant = CAIRO_FONT_SLANT_NORMAL
 505     local weight = CAIRO_FONT_WEIGHT_NORMAL
 506     if t.italic then slant = CAIRO_FONT_SLANT_ITALIC end
 507     if t.oblique then slant = CAIRO_FONT_SLANT_OBLIQUE end
 508     if t.bold then weight = CAIRO_FONT_WEIGHT_BOLD end
 509     cairo_select_font_face(cr, t.font_name, slant,weight)
 510     for i=1, #t.colour do
 511         if #t.colour[i]~=3 then
 512                 print ("error in color table")
 513                 t.colour[i]={1,0xFFFFFF,1}
 514         end
 515     end
 516         local matrix0 = cairo_matrix_t:create()
 517         tolua.takeownership(matrix0)
 518         local rotx,roty=t.rotx/t.font_size,t.roty/t.font_size
 519         cairo_matrix_init (matrix0, 1,roty,rotx,1,0,0)
 520         cairo_transform(cr,matrix0)
 521         cairo_set_font_size(cr,t.font_size)
 522         local te=cairo_text_extents_t:create()
 523         tolua.takeownership(te)
 524     cairo_text_extents (cr,t.text,te)
 525         set_pattern(te)
 526     local mx,my=0,0
 527     if t.h_align=="c" then
 528             mx=-te.width/2
 529     elseif t.h_align=="r" then
 530             mx=-te.width
 531         end
 532     if t.v_align=="m" then
 533             my=-te.height/2-te.y_bearing
 534     elseif t.v_align=="t" then
 535             my=-te.y_bearing
 536         end
 537         cairo_move_to(cr,mx,my)
 538     cairo_show_text(cr,t.text)
 539
 540    if t.reflection_alpha ~= 0 then
 541                 local matrix1 = cairo_matrix_t:create()
 542                 tolua.takeownership(matrix1)
 543                 cairo_set_font_size(cr,t.font_size)
 544                 cairo_matrix_init (matrix1,1,0,0,-1*t.reflection_scale,0,(te.height+te.y_bearing+my)*(1+t.reflection_scale))
 545                 cairo_set_font_size(cr,t.font_size)
 546                 te=nil
 547                 local te=cairo_text_extents_t:create()
 548                 tolua.takeownership(te)
 549                 cairo_text_extents (cr,t.text,te)
 550                 cairo_transform(cr,matrix1)
 551                 set_pattern(te)
 552                 cairo_move_to(cr,mx,my)
 553                 cairo_show_text(cr,t.text)
 554                 local pat2 = cairo_pattern_create_linear (0,
 555                                                                                 (te.y_bearing+te.height+my),
 556                                                                                 0,
 557                                                                                 te.y_bearing+my)
 558                 cairo_pattern_add_color_stop_rgba (pat2, 0,1,0,0,1-t.reflection_alpha)
 559                 cairo_pattern_add_color_stop_rgba (pat2, t.reflection_length,0,0,0,1)
 560                 cairo_set_line_width(cr,0)
 561                 local dy=te.x_bearing
 562                 if dy<0 then dy=dy*(-1) end
 563                 cairo_rectangle(cr,mx+te.x_bearing,te.y_bearing+te.height+my,te.width+dy,-te.height*1.05)
 564                 cairo_clip_preserve(cr)
 565                 cairo_set_operator(cr,CAIRO_OPERATOR_CLEAR)
 566                 --cairo_stroke(cr)
 567                 cairo_mask(cr,pat2)
 568                 cairo_pattern_destroy(pat2)
 569                 cairo_set_operator(cr,CAIRO_OPERATOR_OVER)
 570                 te=nil
 571     end
 572 end
 573
 574
 575  function linear_orientation(t,te)
 576         local w,h=te.width,te.height
 577         local xb,yb=te.x_bearing,te.y_bearing
 578
 579     if t.h_align=="c" then
 580             xb=xb-w/2
 581     elseif t.h_align=="r" then
 582             xb=xb-w
 583         end
 584     if t.v_align=="m" then
 585             yb=-h/2
 586     elseif t.v_align=="t" then
 587             yb=0
 588         end
 589         local p=0
 590         if t.orientation=="nn" then
 591                 p={xb+w/2,yb,xb+w/2,yb+h}
 592         elseif t.orientation=="ne" then
 593                 p={xb+w,yb,xb,yb+h}
 594         elseif t.orientation=="ww" then
 595                 p={xb,h/2,xb+w,h/2}
 596         elseif vorientation=="se" then
 597                 p={xb+w,yb+h,xb,yb}
 598         elseif t.orientation=="ss" then
 599                 p={xb+w/2,yb+h,xb+w/2,yb}
 600         elseif vorientation=="ee" then
 601                 p={xb+w,h/2,xb,h/2}
 602         elseif t.orientation=="sw" then
 603                 p={xb,yb+h,xb+w,yb}
 604         elseif t.orientation=="nw" then
 605                 p={xb,yb,xb+w,yb+h}
 606         end
 607         return p
 608 end
 609