1-- Demonstrate most pllegend capability including unicode symbols. 2-- 3-- Copyright (C) 2011-2013 Jerry Bauck 4-- 5-- This file is part of PLplot. 6-- 7-- PLplot is free software; you can redistribute it and/or modify 8-- it under the terms of the GNU Library General Public License as published 9-- by the Free Software Foundation; either version 2 of the License, or 10-- (at your option) any later version. 11-- 12-- PLplot is distributed in the hope that it will be useful, 13-- but WITHOUT ANY WARRANTY; without even the implied warranty of 14-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15-- GNU Library General Public License for more details. 16-- 17-- You should have received a copy of the GNU Library General Public License 18-- along with PLplot; if not, write to the Free Software 19-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20-- 21 22-- This example designed just for devices (e.g., the cairo-related and 23-- qt-related devices) where the best choice of glyph is automatically 24-- selected by the related libraries (pango/cairo or Qt4) for each 25-- unicode character depending on what system fonts are installed. Of 26-- course, you must have the appropriate TrueType fonts installed to 27-- have access to all the required glyphs. 28 29-- Ada note: The function TUB is Ada.Strings.Unbounded.To_Unbounded_String 30-- renamed. See PLplot_Traditional.ads or PLplot.ads. 31 32with 33 Ada.Strings.Unbounded, 34 Ada.Strings, 35 Ada.Strings.Fixed, 36 PLplot_Auxiliary, 37 PLplot_Traditional; 38use 39 Ada.Strings.Unbounded, 40 Ada.Strings, 41 Ada.Strings.Fixed, 42 PLplot_Auxiliary, 43 PLplot_Traditional; 44 45---------------------------------------------------------------------------- 46-- Demonstrate most pllegend capability including unicode symbols. 47---------------------------------------------------------------------------- 48 49procedure xtraditional33a is 50 position_options : Integer_Array_1D(0 .. 15) := 51 (Pl_Position_Left + Pl_Position_Top + Pl_Position_Outside, 52 Pl_Position_Top + Pl_Position_Outside, 53 Pl_Position_Right + Pl_Position_Top + Pl_Position_Outside, 54 Pl_Position_Right + Pl_Position_Outside, 55 Pl_Position_Right + Pl_Position_Bottom + Pl_Position_Outside, 56 Pl_Position_Bottom + Pl_Position_Outside, 57 Pl_Position_Left + Pl_Position_Bottom + Pl_Position_Outside, 58 Pl_Position_Left + Pl_Position_Outside, 59 Pl_Position_Left + Pl_Position_Top + Pl_Position_Inside, 60 Pl_Position_Top + Pl_Position_Inside, 61 Pl_Position_Right + Pl_Position_Top + Pl_Position_Inside, 62 Pl_Position_Right + Pl_Position_Inside, 63 Pl_Position_Right + Pl_Position_Bottom + Pl_Position_Inside, 64 Pl_Position_Bottom + Pl_Position_Inside, 65 Pl_Position_Left + Pl_Position_Bottom + Pl_Position_Inside, 66 Pl_Position_Left + Pl_Position_Inside); 67 68 -- Pick 5 arbitrary UTF-8 symbols useful for plotting points (✠✚✱✪✽✺✰✴✦). 69 special_symbols : Legend_String_Array_Type(0 .. 4) := 70 (TUB("✰"), TUB("✴"), TUB("✱"), TUB("✽"), TUB("✦")); -- TUB is renamed To_Unbounded_String. 71 72 -- plcolorbar options 73 74 -- Colorbar type options 75 Colorbar_Kinds : constant Integer := 4; 76 colorbar_option_kinds : Integer_Array_1D(0 .. Colorbar_Kinds - 1) := ( 77 Pl_Colorbar_Shade, 78 Pl_Colorbar_Shade + Pl_Colorbar_Shade_Label, 79 Pl_Colorbar_Image, 80 Pl_Colorbar_Gradient); 81 colorbar_option_kind_labels : Legend_String_Array_Type(0 .. Colorbar_Kinds - 1) := 82 (TUB("Shade colorbars"), 83 TUB("Shade colorbars with custom labels"), 84 TUB("Image colorbars"), 85 TUB("Gradient colorbars")); 86 87 -- Which side of the page are we positioned relative to? 88 Colorbar_Positions :constant Integer := 4; 89 colorbar_position_options : Integer_Array_1D(0 .. Colorbar_Positions - 1) := 90 (Pl_Position_Left, 91 Pl_Position_Right, 92 Pl_Position_Top, 93 Pl_Position_Bottom); 94 95 colorbar_position_option_labels : Legend_String_Array_Type(0 .. Colorbar_Positions - 1) := 96 (TUB("Left"), 97 TUB("Right"), 98 TUB("Top"), 99 TUB("Bottom")); 100 101 -- Colorbar label positioning options 102 Colorbar_Labels : constant Integer := 4; 103 colorbar_label_options : Integer_Array_1D(0 .. Colorbar_Labels - 1) := 104 (Pl_Colorbar_Label_Left, 105 Pl_Colorbar_Label_Right, 106 Pl_Colorbar_Label_Top, 107 Pl_Colorbar_Label_Bottom); 108 109 colorbar_label_option_labels : Legend_String_Array_Type(0 .. Colorbar_Labels - 1) := 110 (TUB("Label left"), 111 TUB("Label right"), 112 TUB("Label top"), 113 TUB("Label bottom")); 114 115 -- Colorbar cap options 116 Colorbar_Caps : constant Integer := 4; 117 colorbar_cap_options : Integer_Array_1D(0 .. Colorbar_Caps - 1) := 118 (Pl_Colorbar_Cap_None, 119 Pl_Colorbar_Cap_Low, 120 Pl_Colorbar_Cap_High, 121 Pl_Colorbar_Cap_Low + Pl_Colorbar_Cap_High); 122 colorbar_cap_option_labels : Legend_String_Array_Type(0 .. Colorbar_Caps - 1) := 123 (TUB("No caps"), 124 TUB("Low cap"), 125 TUB("High cap"), 126 TUB("Low and high caps")); 127 128 129 procedure plcolorbar_example_page(kind_i : Integer; label_i : Integer; cap_i : Integer; 130 cont_color : Integer; cont_width : Long_Float; n_values : Integer; values : Real_Vector) 131 is 132 -- Parameters for the colorbars on this page 133 position, opt : Integer; 134 x, y, x_length, y_length : Long_Float; 135 ticks : Real_Vector(0 .. 0) := (others => 0.0); 136 sub_ticks : Integer_Array_1D(0 .. 0) := (others => 0); 137 low_cap_color, high_cap_color : Long_Float; 138 vertical, ifn : Boolean; 139 n_axes : Integer := 1; 140 axis_opts : Legend_String_Array_Type(0 .. 0); 141 n_labels : Integer := 1; 142 label_opts : Integer_Array_1D(0 .. 0) := (others => 0); 143 label : Legend_String_Array_Type(0 .. 0); 144 title : Unbounded_String; 145 colorbar_width, colorbar_height : Long_Float; 146 n_values_array : Integer_Array_1D(0 .. 0); 147 values_array : Real_Matrix(0 .. 0, values'first .. values'last); 148 type Stupid is mod 2**7; -- To cover Legend_Colorbar_Position_Type in plplot_thin.ads. 149 begin 150 n_values_array(0) := n_values; 151 for i in values'range loop 152 values_array(0, i) := values(i); 153 end loop; 154 155 low_cap_color := 0.0; 156 high_cap_color := 1.0; 157 158 -- Start a new page. 159 pladv(0); 160 161 -- Draw one colorbar relative to each side of the page. 162 for position_i in 0 .. Colorbar_Positions - 1 loop 163 position := colorbar_position_options(position_i); 164 opt := colorbar_option_kinds(kind_i) + 165 colorbar_label_options(label_i) + colorbar_cap_options(cap_i); 166 167 -- We have to convert these integers to modular type Stupid before and-ing the bits. 168 -- That's because manipulating bits of non-modular types is nonsense but other 169 -- languages seem to not care about stuff like this. 170 vertical := ((Stupid(position) and Stupid(Pl_Position_Left)) > 0) or 171 ((Stupid(position) and Stupid(Pl_Position_Right)) > 0); 172 173 ifn := ((Stupid(position) and Stupid(Pl_Position_Left)) > 0) or 174 ((Stupid(position) and Stupid(Pl_Position_Bottom)) > 0); 175 176 -- Set the offset position on the page. 177 if vertical then 178 x := 0.0; 179 y := 0.0; 180 x_length := 0.05; 181 y_length := 0.5; 182 else 183 x := 0.0; 184 y := 0.0; 185 x_length := 0.5; 186 y_length := 0.05; 187 end if; 188 189 -- Set appropriate labelling options. 190 if ifn then 191 if cont_color = 0 or cont_width = 0.0 then 192 axis_opts(0) := TUB("uwtivn"); -- TUB is renamed To_Unbounded_String. 193 else 194 axis_opts(0) := TUB("uwxvn"); 195 end if; 196 else 197 if cont_color = 0 or cont_width = 0.0 then 198 axis_opts(0) := TUB("uwtivm"); 199 else 200 axis_opts(0) := TUB("uwxvm"); 201 end if; 202 end if; 203 204 label(0) := colorbar_position_option_labels(position_i) & ", " 205 & colorbar_label_option_labels(label_i); 206 207 -- Smaller text 208 plschr(0.0, 0.75); 209 -- Small ticks on the vertical axis 210 plsmaj(0.0, 0.5); 211 plsmin(0.0, 0.5); 212 213 plvpor(0.20, 0.80, 0.20, 0.80); 214 plwind(0.0, 1.0, 0.0, 1.0); 215 -- Set interesting background colour. 216 plscol0a(15, 0, 0, 0, 0.20); 217 plcolorbar(colorbar_width, colorbar_height, 218 opt + Pl_Colorbar_Bounding_Box + Pl_Colorbar_Background, position, 219 x, y, x_length, y_length, 220 15, 1, 1, 221 low_cap_color, high_cap_color, 222 cont_color, cont_width, 223 label_opts, label, 224 axis_opts, 225 ticks, sub_ticks, 226 n_values_array, values_array); 227 228 -- Reset text and tick sizes 229 plschr(0.0, 1.0); 230 plsmaj(0.0, 1.0); 231 plsmin(0.0, 1.0); 232 end loop; 233 234 -- Draw a page title 235 title := colorbar_option_kind_labels(kind_i) & " - " 236 & colorbar_cap_option_labels(cap_i); 237 plvpor(0.0, 1.0, 0.0, 1.0); 238 plwind(0.0, 1.0, 0.0, 1.0); 239 plptex(0.5, 0.5, 0.0, 0.0, 0.5, To_String(title)); 240 end plcolorbar_example_page; 241 242 243 procedure plcolorbar_example(palette : String; kind_i : Integer; cont_color : Integer; 244 cont_width : Long_Float; n_values : Integer; values : Real_Vector) is 245 begin 246 -- Load the color palette 247 plspal1(palette, True); 248 249 for label_i in 0 .. Colorbar_Labels - 1 loop 250 for cap_i in 0 .. Colorbar_Caps - 1 loop 251 plcolorbar_example_page(kind_i, label_i, cap_i, cont_color, cont_width, 252 n_values, values ); 253 end loop; 254 end loop; 255 end plcolorbar_example; 256 257 258 colorbar : Boolean := True; -- By default do not plot plcolorbar pages 259 -- for now while we are working out the API. 260 opt : Integer; 261 nlegend : Integer; 262 nturn : Integer; 263 legend_width, legend_height, x, y, xstart, ystart : Long_Float; 264 max_height, text_scale : Long_Float; 265 position, opt_base, nrow, ncolumn : Integer; 266 267begin -- main 268 plparseopts(Pl_Parse_Full); 269 270 -- Initialize plplot 271 plinit; 272 273 -- First page illustrating the 16 standard positions. 274 declare 275 nlegend : constant Integer := 1; 276 opt_array : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 277 text_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 278 box_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 279 box_patterns : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 280 box_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 281 box_line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 282 line_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 283 line_styles : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 284 line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 285 symbol_numbers : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 286 symbol_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 287 symbol_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 288 text : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" ")); 289 symbols : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" ")); 290 begin 291 pladv(0); 292 plvpor(0.25, 0.75, 0.25, 0.75); 293 plwind(0.0, 1.0, 0.0, 1.0); 294 plbox("bc", 0.0, 0, "bc", 0.0, 0); 295 plsfont(PL_FCI_SANS, -1, -1); 296 plmtex("t", 8.0, 0.5, 0.5, "The 16 standard legend positions with"); 297 plmtex("t", 6.0, 0.5, 0.5, "the same (0.05) offset in x and y"); 298 299 -- Only specify legend data that are required according to the 300 -- value of opt_array for that entry. 301 opt_base := Pl_Legend_Background + Pl_Legend_Bounding_Box; 302 opt_array(0) := Pl_Legend_Line + Pl_Legend_Symbol; 303 line_styles(0) := 1; 304 line_widths(0) := 1.0; 305 symbol_scales(0) := 1.0; 306 symbol_numbers(0) := 4; 307 symbols(0) := TUB("#(728)"); 308 309 -- Use monotype fonts so that all legends are the same size. 310 plsfont(PL_FCI_MONO, -1, -1); 311 plscol0a(15, 32, 32, 32, 0.70); 312 313 for k in 0 .. 15 loop 314 position := position_options(k); 315 opt := opt_base; 316 -- Make a 2-digit string with leading 0 for 0 .. 9. 317 if k >= 10 then 318 text(0) := To_Unbounded_String(Trim(Integer'image(k), Left)); 319 else 320 text(0) := To_Unbounded_String("0" & Trim(Integer'image(k), Left)); 321 end if; 322 text_colors(0) := 1 + (k mod 8); 323 line_colors(0) := 1 + (k mod 8); 324 symbol_colors(0) := 1 + (k mod 8); 325 326 pllegend(legend_width, legend_height, opt, position, 0.05, 0.05, 327 0.1, 15, 1, 1, 0, 0, 328 opt_array, 1.0, 1.0, 2.0, 329 1.0, text_colors, text, 330 Box_Colors, Box_Patterns, 331 Box_Scales, Box_Line_Widths, 332 line_colors, line_styles, line_widths, 333 symbol_colors, symbol_scales, symbol_numbers, symbols); 334 end loop; 335 end; -- declare 336 337 -- Second page illustrating effect of nrow, ncolumn for the same legend data. 338 declare 339 nlegend : constant Integer := 7; 340 opt_array : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 341 text_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 342 box_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 343 box_patterns : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 344 box_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 345 box_line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 346 line_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 347 line_styles : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 348 line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 349 symbol_numbers : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 350 symbol_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 351 symbol_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 352 text : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" ")); 353 symbols : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" ")); 354 begin 355 pladv(0); 356 plvpor(0.25, 0.75, 0.25, 0.75); 357 plwind(0.0, 1.0, 0.0, 1.0); 358 plbox("bc", 0.0, 0, "bc", 0.0, 0); 359 plsfont(PL_FCI_SANS, -1, -1); 360 plmtex("t", 8.0, 0.5, 0.5, "The effect of nrow, ncolumn, PL_LEGEND_ROW_MAJOR,"); 361 plmtex("t", 6.0, 0.5, 0.5, "and position for the same legend data"); 362 363 -- Only specify legend data that are required according to the 364 -- value of opt_array for that entry. 365 opt_base := Pl_Legend_Background + Pl_Legend_Bounding_Box; 366 for k in 0 .. nlegend - 1 loop 367 opt_array(k) := Pl_Legend_Line + Pl_Legend_Symbol; 368 line_styles(k) := 1; 369 line_widths(k) := 1.0; 370 symbol_scales(k) := 1.0; 371 symbol_numbers(k) := 2; 372 symbols(k) := TUB("#(728)"); 373 -- Make 2-digit strings with leading 0 for 0 .. 9. 374 if k >= 10 then 375 text(k) := To_Unbounded_String(Trim(Integer'image(k), Left)); 376 else 377 text(k) := To_Unbounded_String("0" & Trim(Integer'image(k), Left)); 378 end if; 379 text_colors(k) := 1 + (k mod 8); 380 line_colors(k) := 1 + (k mod 8); 381 symbol_colors(k) := 1 + (k mod 8); 382 end loop; 383 384 -- Use monotype fonts so that all legends are the same size. 385 plsfont(PL_FCI_MONO, -1, -1); 386 plscol0a(15, 32, 32, 32, 0.70); 387 388 position := Pl_Position_Top + Pl_Position_Outside; 389 opt := opt_base; 390 x := 0.0; 391 y := 0.1; 392 nrow := 1; 393 ncolumn := nlegend; 394 pllegend(legend_width, legend_height, opt, position, x, y, 395 0.05, 15, 1, 1, nrow, ncolumn, 396 opt_array, 1.0, 1.0, 2.0, 397 1.0, text_colors, text, 398 Box_Colors, Box_Patterns, 399 Box_Scales, Box_Line_Widths, 400 line_colors, line_styles, line_widths, 401 symbol_colors, symbol_scales, symbol_numbers, symbols); 402 403 position := Pl_Position_Bottom + Pl_Position_Outside; 404 opt := opt_base; 405 x := 0.0; 406 y := 0.1; 407 nrow := 1; 408 ncolumn := nlegend; 409 pllegend(legend_width, legend_height, opt, position, x, y, 410 0.05, 15, 1, 1, nrow, ncolumn, 411 opt_array, 1.0, 1.0, 2.0, 412 1.0, text_colors, text, 413 Box_Colors, Box_Patterns, 414 Box_Scales, Box_Line_Widths, 415 line_colors, line_styles, line_widths, 416 symbol_colors, symbol_scales, symbol_numbers, symbols); 417 418 position := Pl_Position_Left + Pl_Position_Outside; 419 opt := opt_base; 420 x := 0.1; 421 y := 0.0; 422 nrow := nlegend; 423 ncolumn := 1; 424 pllegend(legend_width, legend_height, opt, position, x, y, 425 0.05, 15, 1, 1, nrow, ncolumn, 426 opt_array, 1.0, 1.0, 2.0, 427 1.0, text_colors, text, 428 Box_Colors, Box_Patterns, 429 Box_Scales, Box_Line_Widths, 430 line_colors, line_styles, line_widths, 431 symbol_colors, symbol_scales, symbol_numbers, symbols); 432 433 position := Pl_Position_Right + Pl_Position_Outside; 434 opt := opt_base; 435 x := 0.1; 436 y := 0.0; 437 nrow := nlegend; 438 ncolumn := 1; 439 pllegend(legend_width, legend_height, opt, position, x, y, 440 0.05, 15, 1, 1, nrow, ncolumn, 441 opt_array, 1.0, 1.0, 2.0, 442 1.0, text_colors, text, 443 Box_Colors, Box_Patterns, 444 Box_Scales, Box_Line_Widths, 445 line_colors, line_styles, line_widths, 446 symbol_colors, symbol_scales, symbol_numbers, symbols); 447 448 position := Pl_Position_Left + Pl_Position_Top + Pl_Position_Inside; 449 opt := opt_base; 450 x := 0.0; 451 y := 0.0; 452 nrow := 6; 453 ncolumn := 2; 454 pllegend(legend_width, legend_height, opt, position, x, y, 455 0.05, 15, 1, 1, nrow, ncolumn, 456 opt_array, 1.0, 1.0, 2.0, 457 1.0, text_colors, text, 458 Box_Colors, Box_Patterns, 459 Box_Scales, Box_Line_Widths, 460 line_colors, line_styles, line_widths, 461 symbol_colors, symbol_scales, symbol_numbers, symbols); 462 463 position := Pl_Position_Right + Pl_Position_Top + Pl_Position_Inside; 464 opt := opt_base + Pl_Legend_Row_Major; 465 x := 0.0; 466 y := 0.0; 467 nrow := 6; 468 ncolumn := 2; 469 pllegend(legend_width, legend_height, opt, position, x, y, 470 0.05, 15, 1, 1, nrow, ncolumn, 471 opt_array, 1.0, 1.0, 2.0, 472 1.0, text_colors, text, 473 Box_Colors, Box_Patterns, 474 Box_Scales, Box_Line_Widths, 475 line_colors, line_styles, line_widths, 476 symbol_colors, symbol_scales, symbol_numbers, symbols); 477 478 position := Pl_Position_Bottom + Pl_Position_Inside; 479 opt := opt_base + Pl_Legend_Row_Major; 480 x := 0.0; 481 y := 0.0; 482 nrow := 3; 483 ncolumn := 3; 484 pllegend(legend_width, legend_height, opt, position, x, y, 485 0.05, 15, 1, 1, nrow, ncolumn, 486 opt_array, 1.0, 1.0, 2.0, 487 1.0, text_colors, text, 488 Box_Colors, Box_Patterns, 489 Box_Scales, Box_Line_Widths, 490 line_colors, line_styles, line_widths, 491 symbol_colors, symbol_scales, symbol_numbers, symbols); 492 end; -- declare 493 494 -- Third page demonstrating legend alignment 495 pladv(0); 496 plvpor(0.0, 1.0, 0.0, 0.9); 497 plwind(0.0, 1.0, 0.0, 1.0); 498 plsfont(Pl_Fci_Sans, -1, -1); 499 plmtex("t", 2.0, 0.5, 0.5, "Demonstrate legend alignment"); 500 501 x := 0.1; 502 y := 0.1; 503 nturn := 4; 504 nlegend := 0; 505 position := Pl_Position_Top + Pl_Position_Left + Pl_Position_Subpage; 506 opt_base := Pl_Legend_Background + Pl_Legend_Bounding_Box; 507 opt := opt_base; 508 for i in 0 .. 8 loop 509 510 -- Set up legend arrays with the correct size, type. 511 if i <= nturn then 512 nlegend := nlegend + 1; 513 else 514 nlegend := nlegend - 1; 515 end if; 516 nlegend := Integer'max(1, nlegend); 517 declare 518 opt_array : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 519 text_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 520 box_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 521 box_patterns : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 522 box_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 523 box_line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 524 line_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 525 line_styles : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 526 line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 527 symbol_numbers : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 528 symbol_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 529 symbol_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 530 text : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" ")); 531 symbols : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" ")); 532 begin 533 -- Only specify legend data that are required according to the 534 -- value of opt_array for that entry. 535 for k in 0 .. nlegend - 1 loop 536 opt_array(k) := Pl_Legend_Line + Pl_Legend_Symbol; 537 line_styles(k) := 1; 538 line_widths(k) := 1.0; 539 symbol_scales(k) := 1.0; 540 symbol_numbers(k) := 2; 541 symbols(k) := TUB("#(728)"); 542 -- Make 2-digit strings with leading 0 for 0 .. 9. 543 if k >= 10 then 544 text(k) := To_Unbounded_String(Trim(Integer'image(k), Left)); 545 else 546 text(k) := To_Unbounded_String("0" & Trim(Integer'image(k), Left)); 547 end if; 548 text_colors(k) := 1 + (k mod 8); 549 line_colors(k) := 1 + (k mod 8); 550 symbol_colors(k) := 1 + (k mod 8); 551 end loop; -- k 552 553 -- Use monotype fonts so that all legends are the same size. 554 plsfont(Pl_Fci_Mono, -1, -1); 555 plscol0a(15, 32, 32, 32, 0.70); 556 557 nrow := Integer'min(3, nlegend); 558 ncolumn := 0; 559 560 pllegend(legend_width, legend_height, opt, position, x, y, 561 0.025, 15, 1, 1, nrow, ncolumn, 562 opt_array, 1.0, 1.0, 1.5, 563 1.0, text_colors, text, 564 Box_Colors, Box_Patterns, 565 Box_Scales, Box_Line_Widths, 566 line_colors, line_styles, line_widths, 567 symbol_colors, symbol_scales, symbol_numbers, symbols); 568 569 if i = nturn then 570 position := Pl_Position_Top + Pl_Position_Right + Pl_Position_Subpage; 571 opt := opt_base; 572 x := 1.0 - x; 573 y := y + legend_height; 574 else 575 x := x + legend_width; 576 y := y + legend_height; 577 end if; 578 end; -- declare 579 end loop; -- i 580 581 -- Fourth page illustrating various kinds of legends 582 declare 583 nlegend : constant Integer := 5; 584 opt_array : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 585 text_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 586 box_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 587 box_patterns : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 588 box_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 589 box_line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 590 line_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 591 line_styles : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 592 line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 593 symbol_numbers : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 594 symbol_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0); 595 symbol_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0); 596 text : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" ")); 597 symbols : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" ")); 598 begin 599 max_height := 0.0; 600 xstart := 0.0; 601 ystart := 0.1; 602 x := xstart; 603 y := ystart; 604 text_scale := 0.90; 605 pladv(0); 606 plvpor(0.0, 1.0, 0.0, 0.90); 607 plwind(0.0, 1.0, 0.0, 1.0); 608 plsfont(Pl_Fci_Sans, -1, -1); 609 plmtex("t", 2.0, 0.5, 0.5, "Demonstrate Various Kinds of Legends"); 610 611 -- Only specify legend data that are required according to the 612 -- value of opt_array for that entry. 613 position := Pl_Position_Left + Pl_Position_Top; 614 opt_base := Pl_Legend_Background + Pl_Legend_Bounding_Box + Pl_Legend_Text_Left; 615 616 -- Set up None, Box, Line, Symbol, and Line & Symbol legend entries. 617 opt_array(0) := Pl_Legend_None; 618 text(0) := TUB("None"); 619 text_colors(0) := 1; 620 621 opt_array(1) := Pl_Legend_Color_Box; 622 text(1) := TUB("Box"); 623 text_colors(1) := 2; 624 box_colors(1) := 2; 625 box_patterns(1) := 0; 626 box_scales(1) := 0.8; 627 box_line_widths(1) := 1.0; 628 629 opt_array(2) := Pl_Legend_Line; 630 text(2) := TUB("Line"); 631 text_colors(2) := 3; 632 line_colors(2) := 3; 633 line_styles(2) := 1; 634 line_widths(2) := 1.0; 635 636 opt_array(3) := Pl_Legend_Symbol; 637 text(3) := TUB("Symbol"); 638 text_colors(3) := 4; 639 symbol_colors(3) := 4; 640 symbol_scales(3) := text_scale; 641 symbol_numbers(3) := 4; 642 symbols(3) := special_symbols(2); 643 644 opt_array(4) := Pl_Legend_Symbol + Pl_Legend_Line; 645 text(4) := TUB("L & S"); 646 text_colors(4) := 5; 647 line_colors(4) := 5; 648 line_styles(4) := 1; 649 line_widths(4) := 1.0; 650 symbol_colors(4) := 5; 651 symbol_scales(4) := text_scale; 652 symbol_numbers(4) := 4; 653 symbols(4) := special_symbols(2); 654 655 opt := opt_base; 656 plscol0a(15, 32, 32, 32, 0.70); 657 658 pllegend(legend_width, legend_height, opt, position, x, y, 659 0.1, 15, 1, 1, 0, 0, 660 opt_array, 1.0, text_scale, 2.0, 661 0.0, text_colors, text, 662 box_colors, box_patterns, box_scales, box_line_widths, 663 line_colors, line_styles, line_widths, 664 symbol_colors, symbol_scales, symbol_numbers, symbols); 665 max_height := Long_Float'max(max_height, legend_height); 666 667 -- Set up symbol legend entries with various symbols. 668 for i in 0 .. nlegend - 1 loop 669 opt_array(i) := Pl_Legend_Symbol; 670 text(i) := TUB("Symbol ") & special_symbols(i); 671 text_colors(i) := i + 1; 672 symbol_colors(i) := i + 1; 673 symbol_scales(i) := text_scale; 674 symbol_numbers(i) := 4; 675 symbols(i) := special_symbols(i); 676 end loop; 677 678 opt := opt_base; 679 x := x + legend_width; 680 plscol0a(15, 32, 32, 32, 0.70); 681 682 pllegend(legend_width, legend_height, opt, position, x, y, 683 0.1, 15, 1, 1, 0, 0, 684 opt_array, 1.0, text_scale, 2.0, 685 0.0, text_colors, text, 686 Box_Colors, Box_Patterns, 687 Box_Scales, Box_Line_Widths, 688 line_colors, line_styles, line_widths, 689 symbol_colors, symbol_scales, symbol_numbers, symbols); 690 max_height := Long_Float'max(max_height, legend_height); 691 692 -- Set up symbol legend entries with various numbers of symbols. 693 for i in 0 .. nlegend - 1 loop 694 opt_array(i) := Pl_Legend_Symbol; 695 text(i) := TUB("Symbol Number" & Integer'image(i + 2)); 696 text_colors(i) := i + 1; 697 symbol_colors(i) := i + 1; 698 symbol_scales(i) := text_scale; 699 symbol_numbers(i) := i + 2; 700 symbols(i) := special_symbols(2); 701 end loop; 702 703 opt := opt_base; 704 x := x + legend_width; 705 plscol0a(15, 32, 32, 32, 0.70); 706 707 pllegend(legend_width, legend_height, opt, position, x, y, 708 0.1, 15, 1, 1, 0, 0, 709 opt_array, 1.0, text_scale, 2.0, 710 0.0, text_colors, text, 711 Box_Colors, Box_Patterns, 712 Box_Scales, Box_Line_Widths, 713 line_colors, line_styles, line_widths, 714 symbol_colors, symbol_scales, symbol_numbers, symbols); 715 max_height := Long_Float'max(max_height, legend_height); 716 717 -- Set up box legend entries with various colours. 718 for i in 0 .. nlegend - 1 loop 719 opt_array(i) := Pl_Legend_Color_Box; 720 text(i) := TUB("Box Color" & Integer'image(i + 1)); 721 text_colors(i) := i + 1; 722 box_colors(i) := i + 1; 723 box_patterns(i) := 0; 724 box_scales(i) := 0.8; 725 box_line_widths(i) := 1.0; 726 end loop; 727 728 opt := opt_base; 729 -- Use new origin 730 x := xstart; 731 y := y + max_height; 732 max_height := 0.0; 733 plscol0a(15, 32, 32, 32, 0.70); 734 735 pllegend(legend_width, legend_height, opt, position, x, y, 736 0.1, 15, 1, 1, 0, 0, 737 opt_array, 1.0, text_scale, 2.0, 738 0.0, text_colors, text, 739 box_colors, box_patterns, box_scales, box_line_widths, 740 line_colors, line_styles, line_widths, 741 symbol_colors, symbol_scales, symbol_numbers, symbols); 742 max_height := Long_Float'max(max_height, legend_height); 743 744 -- Set up box legend entries with various patterns. 745 for i in 0 .. nlegend - 1 loop 746 opt_array(i) := Pl_Legend_Color_Box; 747 text(i) := TUB("Box Pattern" & Integer'image(i)); 748 text_colors(i) := 2; 749 box_colors(i) := 2; 750 box_patterns(i) := i; 751 box_scales(i) := 0.8; 752 box_line_widths(i) := 1.0; 753 end loop; 754 755 opt := opt_base; 756 x := x + legend_width; 757 plscol0a(15, 32, 32, 32, 0.70); 758 759 pllegend(legend_width, legend_height, opt, position, x, y, 760 0.1, 15, 1, 1, 0, 0, 761 opt_array, 1.0, text_scale, 2.0, 762 0.0, text_colors, text, 763 box_colors, box_patterns, box_scales, box_line_widths, 764 line_colors, line_styles, line_widths, 765 symbol_colors, symbol_scales, symbol_numbers, symbols); 766 max_height := Long_Float'max(max_height, legend_height); 767 768 -- Set up box legend entries with various box pattern line widths. 769 for i in 0 .. nlegend - 1 loop 770 opt_array(i) := Pl_Legend_Color_Box; 771 text(i) := TUB("Box Line Width" & Integer'image(i + 1)); 772 text_colors(i) := 2; 773 box_colors(i) := 2; 774 box_patterns(i) := 3; 775 box_scales(i) := 0.8; 776 box_line_widths(i) := Long_Float(i) + 1.0; 777 end loop; 778 779 opt := opt_base; 780 x := x + legend_width; 781 plscol0a(15, 32, 32, 32, 0.70); 782 783 pllegend(legend_width, legend_height, opt, position, x, y, 784 0.1, 15, 1, 1, 0, 0, 785 opt_array, 1.0, text_scale, 2.0, 786 0.0, text_colors, text, 787 box_colors, box_patterns, box_scales, box_line_widths, 788 line_colors, line_styles, line_widths, 789 symbol_colors, symbol_scales, symbol_numbers, symbols); 790 max_height := Long_Float'max(max_height, legend_height); 791 792 -- Set up line legend entries with various colours. 793 for i in 0 .. nlegend - 1 loop 794 opt_array(i) := Pl_Legend_Line; 795 text(i) := TUB("Line Color" & Integer'image(i + 1)); 796 text_colors(i) := i + 1; 797 line_colors(i) := i + 1; 798 line_styles(i) := 1; 799 line_widths(i) := 1.0; 800 end loop; 801 802 opt := opt_base; 803 -- Use new origin 804 x := xstart; 805 y := y + max_height; 806 max_height := 0.0; 807 plscol0a(15, 32, 32, 32, 0.70); 808 809 pllegend(legend_width, legend_height, opt, position, x, y, 810 0.1, 15, 1, 1, 0, 0, 811 opt_array, 1.0, text_scale, 2.0, 812 0.0, text_colors, text, 813 box_colors, box_patterns, box_scales, box_line_widths, 814 line_colors, line_styles, line_widths, 815 symbol_colors, symbol_scales, symbol_numbers, symbols); 816 max_height := Long_Float'max(max_height, legend_height); 817 818 -- Set up line legend entries with various styles. 819 for i in 0 .. nlegend - 1 loop 820 opt_array(i) := Pl_Legend_Line; 821 text(i) := TUB("Line Style" & Integer'image(i + 1)); 822 text_colors(i) := 2; 823 line_colors(i) := 2; 824 line_styles(i) := i + 1; 825 line_widths(i) := 1.0; 826 end loop; 827 828 opt := opt_base; 829 x := x + legend_width; 830 plscol0a(15, 32, 32, 32, 0.70); 831 832 pllegend(legend_width, legend_height, opt, position, x, y, 833 0.1, 15, 1, 1, 0, 0, 834 opt_array, 1.0, text_scale, 2.0, 835 0.0, text_colors, text, 836 box_colors, box_patterns, box_scales, box_line_widths, 837 line_colors, line_styles, line_widths, 838 symbol_colors, symbol_scales, symbol_numbers, symbols); 839 max_height := Long_Float'max(max_height, legend_height); 840 841 -- Set up line legend entries with various widths. 842 for i in 0 .. nlegend - 1 loop 843 opt_array(i) := Pl_Legend_Line; 844 text(i) := TUB("Line Width" & Integer'image(i + 1)); 845 text_colors(i) := 2; 846 line_colors(i) := 2; 847 line_styles(i) := 1; 848 line_widths(i) := Long_Float(i) + 1.0; 849 end loop; 850 851 opt := opt_base; 852 x := x + legend_width; 853 plscol0a(15, 32, 32, 32, 0.70); 854 855 pllegend(legend_width, legend_height, opt, position, x, y, 856 0.1, 15, 1, 1, 0, 0, 857 opt_array, 1.0, text_scale, 2.0, 858 0.0, text_colors, text, 859 box_colors, box_patterns, box_scales, box_line_widths, 860 line_colors, line_styles, line_widths, 861 symbol_colors, symbol_scales, symbol_numbers, symbols); 862 max_height := Long_Float'max(max_height, legend_height); 863 end; -- declare 864 865 if colorbar then 866 -- Color bar examples 867 declare 868 values_small : Real_Vector(0 .. 1) := (-1.0e-20, 1.0e-20); 869 values_uneven : Real_Vector(0 .. 8) := (-1.0e-20, 2.0e-20, 2.6e-20, 3.4e-20, 870 6.0e-20, 7.0e-20, 8.0e-20, 9.0e-20, 10.0e-20); 871 values_even : Real_Vector(0 .. 8) := (-2.0e-20, -1.0e-20, 0.0e-20, 1.0e-20, 872 2.0e-20, 3.0e-20, 4.0e-20, 5.0e-20, 6.0e-20); 873 begin 874 -- Use unsaturated green background colour to contrast with black caps. 875 plscolbg(70, 185, 70); 876 -- Cut out the greatest and smallest bits of the color spectrum to 877 -- leave colors for the end caps. 878 plscmap1_range(0.01, 0.99); 879 880 -- We can only test image and gradient colorbars with two element arrays 881 for i in 2 .. COLORBAR_KINDS - 1 loop 882 plcolorbar_example("cmap1_blue_yellow.pal", i, 0, 0.0, 2, values_small); 883 end loop; 884 -- Test shade colorbars with larger arrays 885 for i in 0 .. 1 loop 886 plcolorbar_example("cmap1_blue_yellow.pal", i, 4, 2.0, 9, values_even); 887 end loop; 888 for i in 0 .. 1 loop 889 plcolorbar_example("cmap1_blue_yellow.pal", i, 0, 0.0, 9, values_uneven); 890 end loop; 891 end; 892 end if; 893 plend; 894end xtraditional33a; 895 896