vcs.maemo.org Git - monky/blob - data/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 - $uptime"),
  91                                 font_size=16,
  92                                 bold=true,
  93                                 font_name="Nokia Pure",
  94                                 h_align="r",
  95                                 x=850,
  96                                 y=15,
  97                                 reflection_alpha=0,
  98                                 reflection_length=0,
  99                                 colour={{0,col0,0.75},{1,colbg,0.75}},
 100
 101                 },
 102                 {
 103                                 text=conky_parse("$freq MHz"),
 104                                 font_name="Nokia Pure",
 105                                 font_size=16,
 106                                 h_align="l",
 107                                 v_align="t",
 108                                 bold=true,
 109                                 x=20,
 110                                 y=60,
 111                                 reflection_alpha=0,
 112                                 reflection_length=0,
 113                                 colour={{0,col0,1},{0.5,colbg,1}},
 114                                 orientation="nn",
 115                 },
 116                 {
 117                     text=conky_parse("${battery_temp}").."\194\176",--yes i had to do the degree symbol like that...
 118                     x=845,
 119                     y=69,
 120                     v_align="m",
 121                     h_align="r",
 122                     font_name="Nokia Pure",
 123                     font_size=14,
 124                         colour={{0,col0,1},{0.5,colbg,1}},
 125                                 orientation="nn",
 126                 reflection_alpha=0,
 127                 reflection_length=0,
 128         },
 129                 {
 130                     text=conky_parse("${battery_rate}mA"),
 131                     x=750,
 132                     y=69,
 133                     v_align="m",
 134                     h_align="l",
 135                     font_name="Nokia Pure",
 136                     font_size=14,
 137                         colour={{0,col0,1},{0.5,colbg,1}},
 138                                 orientation="nn",
 139                 reflection_alpha=0,
 140                 reflection_length=0,
 141         },
 142         {
 143                     text=conky_parse("${battery_short}   ${battery_volts}mV"),
 144                     x=845,
 145                     y=45,
 146                     v_align="m",
 147                     h_align="r",
 148                     font_name="Nokia Pure",
 149                     font_size=14,
 150                         colour={{0,col0,1},{0.5,colbg,1}},
 151                                 orientation="nn",
 152                 reflection_alpha=0,
 153                 reflection_length=0,
 154         },
 155         {
 156                     text=conky_parse("${cell_radio_dbm}".."dBm"),
 157                         x=510,
 158                     y=50,
 159                     font_name="Nokia Pure",
 160                     font_size=14,
 161                         colour={{0,col0,1},{0.5,colbg,1}},
 162                                 orientation="nn",
 163                 reflection_alpha=0.0,
 164                 reflection_length=0.0,
 165         },
 166         {
 167                     text=conky_parse('${cpu}').."%",
 168                         x=223,
 169                     y=67,
 170                     v_align="t",
 171                     h_align="l",
 172                     font_name="Nokia Pure",
 173                     font_size=18,
 174                         colour={{0,col0,1},{0.5,colbg,1}},
 175                                 orientation="ww",
 176                 reflection_alpha=0,
 177                 reflection_length=0,
 178         },
 179         {
 180                     text=conky_parse('${memperc}').."%",
 181                     x=223,
 182                     y=101,
 183                     v_align="t",
 184                     font_name="Nokia Pure",
 185                     font_size=18,
 186                         colour={{0,col0,1},{0.5,colbg,1}},
 187                                 orientation="nn",
 188                                 reflection_alpha=0,
 189                                 reflection_length=0,
 190         },
 191         {
 192                     text=conky_parse('${fs_used /} / ${fs_size /} (${fs_free /})'),
 193                     x=5,
 194                     y=125,
 195                     v_align="t",
 196                     font_name="Nokia Pure",
 197                     font_size=16,
 198                         colour={{conky_parse('${fs_used_perc /}')/100,0x000000,1},{1,0xFFFFFF,1}},
 199                                 orientation="ww",
 200                                 reflection_alpha=0,
 201                                 reflection_length=0,
 202         },
 203         {
 204                     text="/",
 205                     x=220,
 206                     y=124,
 207                     v_align="t",
 208                     font_name="Nokia Pure",
 209                     font_size=18,
 210                         colour={{0,0x336633,1},{1,col0,1}},
 211                         bold=true,
 212                                 orientation="ww",
 213                                 reflection_alpha=0,
 214                                 reflection_length=0,
 215         },
 216         {
 217                     text=conky_parse('${fs_used /home} / ${fs_size /home} (${fs_free /home})'),
 218                     x=5,
 219                     y=145,
 220                     v_align="t",
 221                     font_name="Nokia Pure",
 222                     font_size=16,
 223                         colour={{conky_parse('${fs_used_perc /home}')/100,0x000000,1},{1,0xFFFFFF,1}},
 224                                 orientation="ww",
 225                                 reflection_alpha=0,
 226                                 reflection_length=0,
 227         },
 228         {
 229                     text="/home",
 230                     x=220,
 231                     y=144,
 232                     v_align="t",
 233                     font_name="Nokia Pure",
 234                     font_size=18,
 235                         colour={{0,0x336633,1},{1,col0,1}},
 236                         bold=true,
 237                                 orientation="ww",
 238                                 reflection_alpha=0,
 239                                 reflection_length=0,
 240         },
 241         {
 242                     text=conky_parse('${fs_used /home/user/MyDocs} / ${fs_size /home/user/MyDocs} (${fs_free /home/user/MyDocs})'),
 243                     x=5,
 244                     y=165,
 245                     v_align="t",
 246                     font_name="Nokia Pure",
 247                     font_size=16,
 248                         colour={{conky_parse('${fs_used_perc /home/user/MyDocs}')/100-.1,0x000000,1},{1,0xFFFFFF,1}},
 249                                 orientation="ww",
 250                                 reflection_alpha=0,
 251                                 reflection_length=0,
 252                                 DrawMe=conky_parse("${if_mounted /home/user/MyDocs}1$endif")
 253         },
 254         {
 255                     text="MyDocs",
 256                     x=220,
 257                     y=164,
 258                     v_align="t",
 259                     font_name="Nokia Pure",
 260                     font_size=18,
 261                         colour={{0,0x336633,1},{1,col0,1}},
 262                         bold=true,
 263                                 orientation="ww",
 264                                 reflection_alpha=0,
 265                                 reflection_length=0,
 266                                 DrawMe=conky_parse("${if_mounted /home/user/MyDocs}1$endif")
 267         },
 268  --[[       {
 269                     text=conky_parse('${fs_used /media/mmc1} / ${fs_size /media/mmc1} (${fs_free /media/mmc1})'),
 270                     x=5,
 271                     y=175,
 272                     v_align="t",
 273                     font_name="Nokia Pure",
 274                     font_size=16,
 275                         colour={{conky_parse('${fs_used_perc /media/mmc1}')/100-.1,0x000000,1},{1,0xFFFFFF,1}},
 276                                 orientation="ww",
 277                                 reflection_alpha=0,
 278                                 reflection_length=0,
 279                                 DrawMe=conky_parse("${if_mounted /media/mmc1}1$endif")
 280         },
 281         {
 282                     text="SDCard",
 283                     x=220,
 284                     y=174,
 285                     v_align="t",
 286                     font_name="Nokia Pure",
 287                     font_size=18,
 288                         colour={{0,0x336633,1},{1,col0,1}},
 289                         bold=true,
 290                                 orientation="ww",
 291                                 reflection_alpha=0,
 292                                 reflection_length=0,
 293                                 DrawMe=conky_parse("${if_mounted /media/mmc1}1$endif"),
 294         },
 295                 ]]
 296         {
 297                     text=conky_parse('${wireless_essid wlan0}'),
 298                         x=427,
 299                     y=202,
 300                     h_align="c",
 301                     v_align="m",
 302                     font_name="Nokia Pure",
 303                     font_size=18,
 304                         colour={{0,col0,1},{0.5,colbg,1}},
 305                                 orientation="nn",
 306                 reflection_alpha=0,
 307                 reflection_length=0,
 308                 DrawMe=conky_parse("${if_up wlan0}1${else}0$endif"),
 309         },
 310         {
 311                     text="GPRS",
 312                         x=427,
 313                     y=201,
 314                     h_align="c",
 315                     v_align="m",
 316                     font_name="Nokia Pure",
 317                     font_size=18,
 318                         colour={{0,col0,1},{0.5,colbg,1}},
 319                                 orientation="nn",
 320                 reflection_alpha=0,
 321                 reflection_length=0,
 322                 DrawMe=conky_parse("${if_up gprs0}1${else}0$endif"),
 323         },
 324         {
 325                     text=conky_parse('${wireless_link_qual_perc wlan0}')..'%',
 326                         x=427,
 327                     y=226,
 328                     h_align="c",
 329                     v_align="m",
 330                     font_name="Nokia Pure",
 331                     font_size=14,
 332                         colour={{0,col0,1},{0.5,colbg,1}},
 333                                 orientation="nn",
 334                 reflection_alpha=0,
 335                 reflection_length=0,
 336                 DrawMe=conky_parse("${if_up wlan0}1${else}0$endif"),
 337         },
 338         {
 339                     text='Up '..conky_parse('${upspeedf wlan0}') + conky_parse('${upspeedf gprs0}'),
 340                         x=225,
 341                     y=223,
 342                     h_align="l",
 343                     v_align="m",
 344                     font_name="LEDFont",
 345                     font_size=22,
 346                     bold=true,
 347                         colour={{0,0xcc0066,1}},
 348                                 orientation="ww",
 349                 reflection_alpha=0,
 350                 reflection_length=0,
 351                 DrawMe=conky_parse("${if_up wlan0}1${else}0$endif"),
 352         },
 353         {
 354                     text=conky_parse('${downspeedf wlan0}') + conky_parse('${downspeedf gprs0}')..' Down',
 355                         x=650,
 356                     y=223,
 357                     h_align="r",
 358                     v_align="m",
 359                     font_name="LEDFont",
 360                     font_size=22,
 361                     bold=true,
 362                         colour={{0,0xcc0066,1}},
 363                                 orientation="ww",
 364                 reflection_alpha=0,
 365                 reflection_length=0,
 366                 DrawMe=conky_parse("${if_up wlan0}1${else}0$endif"),
 367         },
 368    --[[     {
 369                     text='Up '..conky_parse('${upspeed gprs0}'),
 370                         x=225,
 371                     y=223,
 372                     h_align="l",
 373                     v_align="m",
 374                     font_name="LEDFont",
 375                     font_size=22,
 376                     bold=true,
 377                         colour={{0,0xcc0066,1}},
 378                                 orientation="ww",
 379                 reflection_alpha=0,
 380                 reflection_length=0,
 381                 DrawMe=conky_parse("${if_up gprs0}1${else}0$endif"),
 382         },
 383         {
 384                     text=conky_parse('${downspeed gprs0}')..' Down',
 385                         x=650,
 386                     y=223,
 387                     h_align="r",
 388                     v_align="m",
 389                     font_name="LEDFont",
 390                     font_size=22,
 391                     bold=true,
 392                         colour={{0,0xcc0066,1}},
 393                                 orientation="ww",
 394                 reflection_alpha=0,
 395                 reflection_length=0,
 396                 DrawMe=conky_parse("${if_up gprs0}1${else}0$endif"),
 397         },]]
 398     }
 399     if conky_window == nil then return end
 400     if tonumber(conky_parse("$updates"))<3 then return end
 401         local cs = cairo_xlib_surface_create(conky_window.display, conky_window.drawable, conky_window.visual, conky_window.width, conky_window.height)
 402     for i,v in pairs(text_settings) do
 403         cr = cairo_create (cs)
 404                         display_text(v)
 405             cairo_destroy(cr)
 406             cr = nil
 407     end
 408         cairo_surface_destroy(cs)
 409 end
 410
 411 function rgb_to_r_g_b2(tcolour)
 412     local colour,alpha=tcolour[2],tcolour[3]
 413     return ((colour / 0x10000) % 0x100) / 255., ((colour / 0x100) % 0x100) / 255., (colour % 0x100) / 255., alpha
 414 end
 415
 416 function display_text(t)
 417         if t.DrawMe~=nil and t.DrawMe ~= "1" then return end
 418         local function set_pattern(te)
 419                 --this function set the pattern
 420                 if #t.colour==1 then
 421                     cairo_set_source_rgba(cr,rgb_to_r_g_b2(t.colour[1]))
 422                 else
 423                         local pat
 424                         if t.radial==nil then
 425                                 local pts=linear_orientation(t,te)
 426                                 pat = cairo_pattern_create_linear (pts[1],pts[2],pts[3],pts[4])
 427                         else
 428                                 pat = cairo_pattern_create_radial (t.radial[1],t.radial[2],t.radial[3],t.radial[4],t.radial[5],t.radial[6])
 429                         end
 430                     for i=1, #t.colour do
 431                         cairo_pattern_add_color_stop_rgba (pat, t.colour[i][1], rgb_to_r_g_b2(t.colour[i]))
 432                     end
 433                     cairo_set_source (cr, pat)
 434                         cairo_pattern_destroy(pat)
 435                 end
 436     end
 437
 438     --set default values if needed
 439     if t.text==nil then t.text="Conky is good for you !" end
 440     if t.x==nil then t.x = conky_window.width/2 end
 441     if t.y==nil then t.y = conky_window.height/2 end
 442     if t.colour==nil then t.colour={{1,0xFFFFFF,1}} end
 443     if t.font_name==nil then t.font_name="Free Sans" end
 444     if t.font_size==nil then t.font_size=14 end
 445     if t.angle==nil then t.angle=0 end
 446     if t.italic==nil then t.italic=false end
 447     if t.oblique==nil then t.oblique=false end
 448     if t.bold==nil then t.bold=false end
 449     if t.radial ~= nil then
 450         if #t.radial~=6 then
 451                 print ("error in radial table")
 452                 t.radial=nil
 453         end
 454     end
 455     if t.orientation==nil then t.orientation="ww" end
 456     if t.h_align==nil then t.h_align="l" end
 457     if t.v_align==nil then t.v_align="b" end
 458     if t.reflection_alpha == nil then t.reflection_alpha=0 end
 459     if t.reflection_length == nil then t.reflection_length=1 end
 460     if t.reflection_scale == nil then t.reflection_scale=1 end
 461     if t.rotx==nil then t.rotx=0 end
 462     if t.roty==nil then t.roty=0 end
 463     cairo_translate(cr,t.x,t.y)
 464     cairo_rotate(cr,t.angle*math.pi/180)
 465     cairo_save(cr)
 466     local slant = CAIRO_FONT_SLANT_NORMAL
 467     local weight = CAIRO_FONT_WEIGHT_NORMAL
 468     if t.italic then slant = CAIRO_FONT_SLANT_ITALIC end
 469     if t.oblique then slant = CAIRO_FONT_SLANT_OBLIQUE end
 470     if t.bold then weight = CAIRO_FONT_WEIGHT_BOLD end
 471     cairo_select_font_face(cr, t.font_name, slant,weight)
 472     for i=1, #t.colour do
 473         if #t.colour[i]~=3 then
 474                 print ("error in color table")
 475                 t.colour[i]={1,0xFFFFFF,1}
 476         end
 477     end
 478         local matrix0 = cairo_matrix_t:create()
 479         tolua.takeownership(matrix0)
 480         local rotx,roty=t.rotx/t.font_size,t.roty/t.font_size
 481         cairo_matrix_init (matrix0, 1,roty,rotx,1,0,0)
 482         cairo_transform(cr,matrix0)
 483         cairo_set_font_size(cr,t.font_size)
 484         local te=cairo_text_extents_t:create()
 485         tolua.takeownership(te)
 486     cairo_text_extents (cr,t.text,te)
 487         set_pattern(te)
 488     local mx,my=0,0
 489     if t.h_align=="c" then
 490             mx=-te.width/2
 491     elseif t.h_align=="r" then
 492             mx=-te.width
 493         end
 494     if t.v_align=="m" then
 495             my=-te.height/2-te.y_bearing
 496     elseif t.v_align=="t" then
 497             my=-te.y_bearing
 498         end
 499         cairo_move_to(cr,mx,my)
 500     cairo_show_text(cr,t.text)
 501
 502    if t.reflection_alpha ~= 0 then
 503                 local matrix1 = cairo_matrix_t:create()
 504                 tolua.takeownership(matrix1)
 505                 cairo_set_font_size(cr,t.font_size)
 506                 cairo_matrix_init (matrix1,1,0,0,-1*t.reflection_scale,0,(te.height+te.y_bearing+my)*(1+t.reflection_scale))
 507                 cairo_set_font_size(cr,t.font_size)
 508                 te=nil
 509                 local te=cairo_text_extents_t:create()
 510                 tolua.takeownership(te)
 511                 cairo_text_extents (cr,t.text,te)
 512                 cairo_transform(cr,matrix1)
 513                 set_pattern(te)
 514                 cairo_move_to(cr,mx,my)
 515                 cairo_show_text(cr,t.text)
 516                 local pat2 = cairo_pattern_create_linear (0,
 517                                                                                 (te.y_bearing+te.height+my),
 518                                                                                 0,
 519                                                                                 te.y_bearing+my)
 520                 cairo_pattern_add_color_stop_rgba (pat2, 0,1,0,0,1-t.reflection_alpha)
 521                 cairo_pattern_add_color_stop_rgba (pat2, t.reflection_length,0,0,0,1)
 522                 cairo_set_line_width(cr,0)
 523                 local dy=te.x_bearing
 524                 if dy<0 then dy=dy*(-1) end
 525                 cairo_rectangle(cr,mx+te.x_bearing,te.y_bearing+te.height+my,te.width+dy,-te.height*1.05)
 526                 cairo_clip_preserve(cr)
 527                 cairo_set_operator(cr,CAIRO_OPERATOR_CLEAR)
 528                 --cairo_stroke(cr)
 529                 cairo_mask(cr,pat2)
 530                 cairo_pattern_destroy(pat2)
 531                 cairo_set_operator(cr,CAIRO_OPERATOR_OVER)
 532                 te=nil
 533     end
 534 end
 535
 536
 537  function linear_orientation(t,te)
 538         local w,h=te.width,te.height
 539         local xb,yb=te.x_bearing,te.y_bearing
 540
 541     if t.h_align=="c" then
 542             xb=xb-w/2
 543     elseif t.h_align=="r" then
 544             xb=xb-w
 545         end
 546     if t.v_align=="m" then
 547             yb=-h/2
 548     elseif t.v_align=="t" then
 549             yb=0
 550         end
 551         local p=0
 552         if t.orientation=="nn" then
 553                 p={xb+w/2,yb,xb+w/2,yb+h}
 554         elseif t.orientation=="ne" then
 555                 p={xb+w,yb,xb,yb+h}
 556         elseif t.orientation=="ww" then
 557                 p={xb,h/2,xb+w,h/2}
 558         elseif vorientation=="se" then
 559                 p={xb+w,yb+h,xb,yb}
 560         elseif t.orientation=="ss" then
 561                 p={xb+w/2,yb+h,xb+w/2,yb}
 562         elseif vorientation=="ee" then
 563                 p={xb+w,h/2,xb,h/2}
 564         elseif t.orientation=="sw" then
 565                 p={xb,yb+h,xb+w,yb}
 566         elseif t.orientation=="nw" then
 567                 p={xb,yb,xb+w,yb+h}
 568         end
 569         return p
 570 end
 571