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--
-- $Id: xthick33a.adb 12523 2013-09-24 10:27:16Z jbauck $
--
-- Demonstrate most Create_Legend capability including unicode symbols.
--
-- Copyright (C) 2011-2013 Jerry Bauck
--
-- This file is part of PLplot.
--
-- PLplot is free software; you can redistribute it and/or modify
-- it under the terms of the GNU Library General Public License as published
-- by the Free Software Foundation; either version 2 of the License, or
-- (at your option) any later version.
--
-- PLplot is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU Library General Public License for more details.
--
-- You should have received a copy of the GNU Library General Public License
-- along with PLplot; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
--
-- This example designed just for devices (e.g., the cairo-related and
-- qt-related devices) where the best choice of glyph is automatically
-- selected by the related libraries (pango/cairo or Qt4) for each
-- unicode character depending on what system fonts are installed. Of
-- course, you must have the appropriate TrueType fonts installed to
-- have access to all the required glyphs.
-- Ada note: The function TUB is Ada.Strings.Unbounded.To_Unbounded_String
-- renamed. See PLplot.ads or PLplot.ads.
with
Ada.Strings.Unbounded,
Ada.Strings,
Ada.Strings.Fixed,
PLplot_Auxiliary,
PLplot;
use
Ada.Strings.Unbounded,
Ada.Strings,
Ada.Strings.Fixed,
PLplot_Auxiliary,
PLplot;
----------------------------------------------------------------------------
-- Demonstrate most Create_Legend capability including unicode symbols.
----------------------------------------------------------------------------
procedure xthick33a is
position_options : Integer_Array_1D(0 .. 15) :=
(Pl_Position_Left + Pl_Position_Top + Pl_Position_Outside,
Pl_Position_Top + Pl_Position_Outside,
Pl_Position_Right + Pl_Position_Top + Pl_Position_Outside,
Pl_Position_Right + Pl_Position_Outside,
Pl_Position_Right + Pl_Position_Bottom + Pl_Position_Outside,
Pl_Position_Bottom + Pl_Position_Outside,
Pl_Position_Left + Pl_Position_Bottom + Pl_Position_Outside,
Pl_Position_Left + Pl_Position_Outside,
Pl_Position_Left + Pl_Position_Top + Pl_Position_Inside,
Pl_Position_Top + Pl_Position_Inside,
Pl_Position_Right + Pl_Position_Top + Pl_Position_Inside,
Pl_Position_Right + Pl_Position_Inside,
Pl_Position_Right + Pl_Position_Bottom + Pl_Position_Inside,
Pl_Position_Bottom + Pl_Position_Inside,
Pl_Position_Left + Pl_Position_Bottom + Pl_Position_Inside,
Pl_Position_Left + Pl_Position_Inside);
-- Pick 5 arbitrary UTF-8 symbols useful for plotting points (✠✚✱✪✽✺✰✴✦).
special_symbols : Legend_String_Array_Type(0 .. 4) :=
(TUB("✰"), TUB("✴"), TUB("✱"), TUB("✽"), TUB("✦")); -- TUB is renamed To_Unbounded_String.
-- Create_Colorbar options
-- Colorbar type options
Colorbar_Kinds : constant Integer := 4;
colorbar_option_kinds : Integer_Array_1D(0 .. Colorbar_Kinds - 1) := (
Pl_Colorbar_Shade,
Pl_Colorbar_Shade + Pl_Colorbar_Shade_Label,
Pl_Colorbar_Image,
Pl_Colorbar_Gradient);
colorbar_option_kind_labels : Legend_String_Array_Type(0 .. Colorbar_Kinds - 1) :=
(TUB("Shade colorbars"),
TUB("Shade colorbars with custom labels"),
TUB("Image colorbars"),
TUB("Gradient colorbars"));
-- Which side of the page are we positioned relative to?
Colorbar_Positions :constant Integer := 4;
colorbar_position_options : Integer_Array_1D(0 .. Colorbar_Positions - 1) :=
(Pl_Position_Left,
Pl_Position_Right,
Pl_Position_Top,
Pl_Position_Bottom);
colorbar_position_option_labels : Legend_String_Array_Type(0 .. Colorbar_Positions - 1) :=
(TUB("Left"),
TUB("Right"),
TUB("Top"),
TUB("Bottom"));
-- Colorbar label positioning options
Colorbar_Labels : constant Integer := 4;
colorbar_label_options : Integer_Array_1D(0 .. Colorbar_Labels - 1) :=
(Pl_Colorbar_Label_Left,
Pl_Colorbar_Label_Right,
Pl_Colorbar_Label_Top,
Pl_Colorbar_Label_Bottom);
colorbar_label_option_labels : Legend_String_Array_Type(0 .. Colorbar_Labels - 1) :=
(TUB("Label left"),
TUB("Label right"),
TUB("Label top"),
TUB("Label bottom"));
-- Colorbar cap options
Colorbar_Caps : constant Integer := 4;
colorbar_cap_options : Integer_Array_1D(0 .. Colorbar_Caps - 1) :=
(Pl_Colorbar_Cap_None,
Pl_Colorbar_Cap_Low,
Pl_Colorbar_Cap_High,
Pl_Colorbar_Cap_Low + Pl_Colorbar_Cap_High);
colorbar_cap_option_labels : Legend_String_Array_Type(0 .. Colorbar_Caps - 1) :=
(TUB("No caps"),
TUB("Low cap"),
TUB("High cap"),
TUB("Low and high caps"));
procedure Create_Colorbar_example_page(kind_i : Integer; label_i : Integer; cap_i : Integer;
cont_color : Integer; cont_width : Long_Float; n_values : Integer; values : Real_Vector)
is
-- Parameters for the colorbars on this page
position, opt : Integer;
x, y, x_length, y_length : Long_Float;
ticks : Real_Vector(0 .. 0) := (others => 0.0);
sub_ticks : Integer_Array_1D(0 .. 0) := (others => 0);
low_cap_color, high_cap_color : Long_Float;
vertical, ifn : Boolean;
n_axes : Integer := 1;
axis_opts : Legend_String_Array_Type(0 .. 0);
n_labels : Integer := 1;
label_opts : Integer_Array_1D(0 .. 0) := (others => 0);
label : Legend_String_Array_Type(0 .. 0);
title : Unbounded_String;
colorbar_width, colorbar_height : Long_Float;
n_values_array : Integer_Array_1D(0 .. 0);
values_array : Real_Matrix(0 .. 0, values'first .. values'last);
type Stupid is mod 2**7; -- To cover Legend_Colorbar_Position_Type in plplot_thin.ads.
begin
n_values_array(0) := n_values;
for i in values'range loop
values_array(0, i) := values(i);
end loop;
low_cap_color := 0.0;
high_cap_color := 1.0;
-- Start a new page.
Advance_To_Subpage(Next_Subpage);
-- Draw one colorbar relative to each side of the page.
for position_i in 0 .. Colorbar_Positions - 1 loop
position := colorbar_position_options(position_i);
opt := colorbar_option_kinds(kind_i) +
colorbar_label_options(label_i) + colorbar_cap_options(cap_i);
-- We have to convert these integers to modular type Stupid before and-ing the bits.
-- That's because manipulating bits of non-modular types is nonsense but other
-- languages seem to not care about stuff like this.
vertical := ((Stupid(position) and Stupid(Pl_Position_Left)) > 0) or
((Stupid(position) and Stupid(Pl_Position_Right)) > 0);
ifn := ((Stupid(position) and Stupid(Pl_Position_Left)) > 0) or
((Stupid(position) and Stupid(Pl_Position_Bottom)) > 0);
-- Set the offset position on the page.
if vertical then
x := 0.0;
y := 0.0;
x_length := 0.05;
y_length := 0.5;
else
x := 0.0;
y := 0.0;
x_length := 0.5;
y_length := 0.05;
end if;
-- Set appropriate labelling options.
if ifn then
if cont_color = 0 or cont_width = 0.0 then
axis_opts(0) := TUB("uwtivn"); -- TUB is renamed To_Unbounded_String.
else
axis_opts(0) := TUB("uwxvn");
end if;
else
if cont_color = 0 or cont_width = 0.0 then
axis_opts(0) := TUB("uwtivm");
else
axis_opts(0) := TUB("uwxvm");
end if;
end if;
label(0) := colorbar_position_option_labels(position_i) & ", "
& colorbar_label_option_labels(label_i);
-- Smaller text
Set_Character_Height(0.0, 0.75);
-- Small ticks on the vertical axis
Set_Major_Tick_Length(0.0, 0.5);
Set_Minor_Tick_Length(0.0, 0.5);
Set_Viewport_Normalized(0.20, 0.80, 0.20, 0.80);
Set_Viewport_World(0.0, 1.0, 0.0, 1.0);
-- Set interesting background colour.
Set_One_Color_Map_0_And_Alpha(White, 0, 0, 0, 0.20);
Create_Colorbar(colorbar_width, colorbar_height,
opt + Pl_Colorbar_Bounding_Box + Pl_Colorbar_Background, position,
x, y, x_length, y_length,
White, Red, 1,
low_cap_color, high_cap_color,
cont_color, cont_width,
label_opts, label,
axis_opts,
ticks, sub_ticks,
n_values_array, values_array);
-- Reset text and tick sizes
Set_Character_Height(0.0, 1.0);
Set_Major_Tick_Length(0.0, 1.0);
Set_Minor_Tick_Length(0.0, 1.0);
end loop;
-- Draw a page title
title := colorbar_option_kind_labels(kind_i) & " - "
& colorbar_cap_option_labels(cap_i);
Set_Viewport_Normalized(0.0, 1.0, 0.0, 1.0);
Set_Viewport_World(0.0, 1.0, 0.0, 1.0);
Write_Text_World(0.5, 0.5, 0.0, 0.0, 0.5, To_String(title));
end Create_Colorbar_example_page;
procedure Create_Colorbar_example(palette : String; kind_i : Integer; cont_color : Integer;
cont_width : Long_Float; n_values : Integer; values : Real_Vector) is
begin
-- Load the color palette
Set_Color_Map_1_From_File(palette, True);
for label_i in 0 .. Colorbar_Labels - 1 loop
for cap_i in 0 .. Colorbar_Caps - 1 loop
Create_Colorbar_example_page(kind_i, label_i, cap_i, cont_color, cont_width,
n_values, values );
end loop;
end loop;
end Create_Colorbar_example;
colorbar : Boolean := True; -- By default do not plot Create_Colorbar pages
-- for now while we are working out the API.
opt : Integer;
nlegend : Integer;
nturn : Integer;
legend_width, legend_height, x, y, xstart, ystart : Long_Float;
max_height, text_scale : Long_Float;
position, opt_base, nrow, ncolumn : Integer;
begin -- main
Parse_Command_Line_Arguments(Pl_Parse_Full);
-- Initialize plplot
Initialize_PLplot;
-- First page illustrating the 16 standard positions.
declare
nlegend : constant Integer := 1;
opt_array : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
text_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_patterns : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
box_line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
line_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
line_styles : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
symbol_numbers : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
symbol_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
symbol_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
text : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" "));
symbols : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" "));
begin
Advance_To_Subpage(Next_Subpage);
Set_Viewport_Normalized(0.25, 0.75, 0.25, 0.75);
Set_Viewport_World(0.0, 1.0, 0.0, 1.0);
Box_Around_Viewport("bc", 0.0, 0, "bc", 0.0, 0);
Set_Font(PL_FCI_SANS, -1, -1);
Write_Text_Viewport("t", 8.0, 0.5, 0.5, "The 16 standard legend positions with");
Write_Text_Viewport("t", 6.0, 0.5, 0.5, "the same (0.05) offset in x and y");
-- Only specify legend data that are required according to the
-- value of opt_array for that entry.
opt_base := Pl_Legend_Background + Pl_Legend_Bounding_Box;
opt_array(0) := Pl_Legend_Line + Pl_Legend_Symbol;
line_styles(0) := 1;
line_widths(0) := 1.0;
symbol_scales(0) := 1.0;
symbol_numbers(0) := 4;
symbols(0) := TUB("*");
-- Use monotype fonts so that all legends are the same size.
Set_Font(PL_FCI_MONO, -1, -1);
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
for k in 0 .. 15 loop
position := position_options(k);
opt := opt_base;
-- Make a 2-digit string with leading 0 for 0 .. 9.
if k >= 10 then
text(0) := To_Unbounded_String(Trim(Integer'image(k), Left));
else
text(0) := To_Unbounded_String("0" & Trim(Integer'image(k), Left));
end if;
text_colors(0) := 1 + (k mod 8);
line_colors(0) := 1 + (k mod 8);
symbol_colors(0) := 1 + (k mod 8);
Create_Legend(legend_width, legend_height, opt, position, 0.05, 0.05,
0.1, White, Red, 1, 0, 0,
opt_array, 1.0, 1.0, 2.0,
1.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
end loop;
end; -- declare
-- Second page illustrating effect of nrow, ncolumn for the same legend data.
declare
nlegend : constant Integer := 7;
opt_array : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
text_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_patterns : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
box_line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
line_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
line_styles : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
symbol_numbers : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
symbol_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
symbol_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
text : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" "));
symbols : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" "));
begin
Advance_To_Subpage(Next_Subpage);
Set_Viewport_Normalized(0.25, 0.75, 0.25, 0.75);
Set_Viewport_World(0.0, 1.0, 0.0, 1.0);
Box_Around_Viewport("bc", 0.0, 0, "bc", 0.0, 0);
Set_Font(PL_FCI_SANS, -1, -1);
Write_Text_Viewport("t", 8.0, 0.5, 0.5, "The effect of nrow, ncolumn, PL_LEGEND_ROW_MAJOR,");
Write_Text_Viewport("t", 6.0, 0.5, 0.5, "and position for the same legend data");
-- Only specify legend data that are required according to the
-- value of opt_array for that entry.
opt_base := Pl_Legend_Background + Pl_Legend_Bounding_Box;
for k in 0 .. nlegend - 1 loop
opt_array(k) := Pl_Legend_Line + Pl_Legend_Symbol;
line_styles(k) := 1;
line_widths(k) := 1.0;
symbol_scales(k) := 1.0;
symbol_numbers(k) := 2;
symbols(k) := TUB("*");
-- Make 2-digit strings with leading 0 for 0 .. 9.
if k >= 10 then
text(k) := To_Unbounded_String(Trim(Integer'image(k), Left));
else
text(k) := To_Unbounded_String("0" & Trim(Integer'image(k), Left));
end if;
text_colors(k) := 1 + (k mod 8);
line_colors(k) := 1 + (k mod 8);
symbol_colors(k) := 1 + (k mod 8);
end loop;
-- Use monotype fonts so that all legends are the same size.
Set_Font(PL_FCI_MONO, -1, -1);
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
position := Pl_Position_Top + Pl_Position_Outside;
opt := opt_base;
x := 0.0;
y := 0.1;
nrow := 1;
ncolumn := nlegend;
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.05, White, Red, 1, nrow, ncolumn,
opt_array, 1.0, 1.0, 2.0,
1.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
position := Pl_Position_Bottom + Pl_Position_Outside;
opt := opt_base;
x := 0.0;
y := 0.1;
nrow := 1;
ncolumn := nlegend;
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.05, White, Red, 1, nrow, ncolumn,
opt_array, 1.0, 1.0, 2.0,
1.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
position := Pl_Position_Left + Pl_Position_Outside;
opt := opt_base;
x := 0.1;
y := 0.0;
nrow := nlegend;
ncolumn := 1;
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.05, White, Red, 1, nrow, ncolumn,
opt_array, 1.0, 1.0, 2.0,
1.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
position := Pl_Position_Right + Pl_Position_Outside;
opt := opt_base;
x := 0.1;
y := 0.0;
nrow := nlegend;
ncolumn := 1;
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.05, White, Red, 1, nrow, ncolumn,
opt_array, 1.0, 1.0, 2.0,
1.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
position := Pl_Position_Left + Pl_Position_Top + Pl_Position_Inside;
opt := opt_base;
x := 0.0;
y := 0.0;
nrow := 6;
ncolumn := 2;
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.05, White, Red, 1, nrow, ncolumn,
opt_array, 1.0, 1.0, 2.0,
1.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
position := Pl_Position_Right + Pl_Position_Top + Pl_Position_Inside;
opt := opt_base + Pl_Legend_Row_Major;
x := 0.0;
y := 0.0;
nrow := 6;
ncolumn := 2;
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.05, White, Red, 1, nrow, ncolumn,
opt_array, 1.0, 1.0, 2.0,
1.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
position := Pl_Position_Bottom + Pl_Position_Inside;
opt := opt_base + Pl_Legend_Row_Major;
x := 0.0;
y := 0.0;
nrow := 3;
ncolumn := 3;
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.05, White, Red, 1, nrow, ncolumn,
opt_array, 1.0, 1.0, 2.0,
1.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
end; -- declare
-- Third page demonstrating legend alignment
Advance_To_Subpage(Next_Subpage);
Set_Viewport_Normalized(0.0, 1.0, 0.0, 0.9);
Set_Viewport_World(0.0, 1.0, 0.0, 1.0);
Set_Font(Pl_Fci_Sans, -1, -1);
Write_Text_Viewport("t", 2.0, 0.5, 0.5, "Demonstrate legend alignment");
x := 0.1;
y := 0.1;
nturn := 4;
nlegend := 0;
position := Pl_Position_Top + Pl_Position_Left + Pl_Position_Subpage;
opt_base := Pl_Legend_Background + Pl_Legend_Bounding_Box;
opt := opt_base;
for i in 0 .. 8 loop
-- Set up legend arrays with the correct size, type.
if i <= nturn then
nlegend := nlegend + 1;
else
nlegend := nlegend - 1;
end if;
nlegend := Integer'max(1, nlegend);
declare
opt_array : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
text_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_patterns : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
box_line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
line_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
line_styles : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
symbol_numbers : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
symbol_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
symbol_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
text : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" "));
symbols : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" "));
begin
-- Only specify legend data that are required according to the
-- value of opt_array for that entry.
for k in 0 .. nlegend - 1 loop
opt_array(k) := Pl_Legend_Line + Pl_Legend_Symbol;
line_styles(k) := 1;
line_widths(k) := 1.0;
symbol_scales(k) := 1.0;
symbol_numbers(k) := 2;
symbols(k) := TUB("*");
-- Make 2-digit strings with leading 0 for 0 .. 9.
if k >= 10 then
text(k) := To_Unbounded_String(Trim(Integer'image(k), Left));
else
text(k) := To_Unbounded_String("0" & Trim(Integer'image(k), Left));
end if;
text_colors(k) := 1 + (k mod 8);
line_colors(k) := 1 + (k mod 8);
symbol_colors(k) := 1 + (k mod 8);
end loop; -- k
-- Use monotype fonts so that all legends are the same size.
Set_Font(Pl_Fci_Mono, -1, -1);
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
nrow := Integer'min(3, nlegend);
ncolumn := 0;
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.025, White, Red, 1, nrow, ncolumn,
opt_array, 1.0, 1.0, 1.5,
1.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
if i = nturn then
position := Pl_Position_Top + Pl_Position_Right + Pl_Position_Subpage;
opt := opt_base;
x := 1.0 - x;
y := y + legend_height;
else
x := x + legend_width;
y := y + legend_height;
end if;
end; -- declare
end loop; -- i
-- Fourth page illustrating various kinds of legends
declare
nlegend : constant Integer := 5;
opt_array : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
text_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_patterns : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
box_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
box_line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
line_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
line_styles : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
line_widths : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
symbol_numbers : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
symbol_colors : Integer_Array_1D(0 .. nlegend - 1) := (others => 0);
symbol_scales : Real_Vector (0 .. nlegend - 1) := (others => 0.0);
text : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" "));
symbols : Legend_String_Array_Type(0 .. nlegend - 1) := (others => TUB(" "));
begin
max_height := 0.0;
xstart := 0.0;
ystart := 0.1;
x := xstart;
y := ystart;
text_scale := 0.90;
Advance_To_Subpage(Next_Subpage);
Set_Viewport_Normalized(0.0, 1.0, 0.0, 0.90);
Set_Viewport_World(0.0, 1.0, 0.0, 1.0);
Set_Font(Pl_Fci_Sans, -1, -1);
Write_Text_Viewport("t", 2.0, 0.5, 0.5, "Demonstrate Various Kinds of Legends");
-- Only specify legend data that are required according to the
-- value of opt_array for that entry.
position := Pl_Position_Left + Pl_Position_Top;
opt_base := Pl_Legend_Background + Pl_Legend_Bounding_Box + Pl_Legend_Text_Left;
-- Set up None, Box, Line, Symbol, and Line & Symbol legend entries.
opt_array(0) := Pl_Legend_None;
text(0) := TUB("None");
text_colors(0) := 1;
opt_array(1) := Pl_Legend_Color_Box;
text(1) := TUB("Box");
text_colors(1) := 2;
box_colors(1) := 2;
box_patterns(1) := 0;
box_scales(1) := 0.8;
box_line_widths(1) := 1.0;
opt_array(2) := Pl_Legend_Line;
text(2) := TUB("Line");
text_colors(2) := 3;
line_colors(2) := 3;
line_styles(2) := 1;
line_widths(2) := 1.0;
opt_array(3) := Pl_Legend_Symbol;
text(3) := TUB("Symbol");
text_colors(3) := 4;
symbol_colors(3) := 4;
symbol_scales(3) := text_scale;
symbol_numbers(3) := 4;
symbols(3) := special_symbols(2);
opt_array(4) := Pl_Legend_Symbol + Pl_Legend_Line;
text(4) := TUB("L & S");
text_colors(4) := 5;
line_colors(4) := 5;
line_styles(4) := 1;
line_widths(4) := 1.0;
symbol_colors(4) := 5;
symbol_scales(4) := text_scale;
symbol_numbers(4) := 4;
symbols(4) := special_symbols(2);
opt := opt_base;
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.1, White, Red, 1, 0, 0,
opt_array, 1.0, text_scale, 2.0,
0.0, text_colors, text,
box_colors, box_patterns, box_scales, box_line_widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
max_height := Long_Float'max(max_height, legend_height);
-- Set up symbol legend entries with various symbols.
for i in 0 .. nlegend - 1 loop
opt_array(i) := Pl_Legend_Symbol;
text(i) := TUB("Symbol ") & special_symbols(i);
text_colors(i) := i + 1;
symbol_colors(i) := i + 1;
symbol_scales(i) := text_scale;
symbol_numbers(i) := 4;
symbols(i) := special_symbols(i);
end loop;
opt := opt_base;
x := x + legend_width;
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.1, White, Red, 1, 0, 0,
opt_array, 1.0, text_scale, 2.0,
0.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
max_height := Long_Float'max(max_height, legend_height);
-- Set up symbol legend entries with various numbers of symbols.
for i in 0 .. nlegend - 1 loop
opt_array(i) := Pl_Legend_Symbol;
text(i) := TUB("Symbol Number" & Integer'image(i + 2));
text_colors(i) := i + 1;
symbol_colors(i) := i + 1;
symbol_scales(i) := text_scale;
symbol_numbers(i) := i + 2;
symbols(i) := special_symbols(2);
end loop;
opt := opt_base;
x := x + legend_width;
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.1, White, Red, 1, 0, 0,
opt_array, 1.0, text_scale, 2.0,
0.0, text_colors, text,
Box_Colors, Box_Patterns,
Box_Scales, Box_Line_Widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
max_height := Long_Float'max(max_height, legend_height);
-- Set up box legend entries with various colours.
for i in 0 .. nlegend - 1 loop
opt_array(i) := Pl_Legend_Color_Box;
text(i) := TUB("Box Color" & Integer'image(i + 1));
text_colors(i) := i + 1;
box_colors(i) := i + 1;
box_patterns(i) := 0;
box_scales(i) := 0.8;
box_line_widths(i) := 1.0;
end loop;
opt := opt_base;
-- Use new origin
x := xstart;
y := y + max_height;
max_height := 0.0;
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.1, White, Red, 1, 0, 0,
opt_array, 1.0, text_scale, 2.0,
0.0, text_colors, text,
box_colors, box_patterns, box_scales, box_line_widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
max_height := Long_Float'max(max_height, legend_height);
-- Set up box legend entries with various patterns.
for i in 0 .. nlegend - 1 loop
opt_array(i) := Pl_Legend_Color_Box;
text(i) := TUB("Box Pattern" & Integer'image(i));
text_colors(i) := 2;
box_colors(i) := 2;
box_patterns(i) := i;
box_scales(i) := 0.8;
box_line_widths(i) := 1.0;
end loop;
opt := opt_base;
x := x + legend_width;
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.1, White, Red, 1, 0, 0,
opt_array, 1.0, text_scale, 2.0,
0.0, text_colors, text,
box_colors, box_patterns, box_scales, box_line_widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
max_height := Long_Float'max(max_height, legend_height);
-- Set up box legend entries with various box pattern line widths.
for i in 0 .. nlegend - 1 loop
opt_array(i) := Pl_Legend_Color_Box;
text(i) := TUB("Box Line Width" & Integer'image(i + 1));
text_colors(i) := 2;
box_colors(i) := 2;
box_patterns(i) := 3;
box_scales(i) := 0.8;
box_line_widths(i) := Long_Float(i) + 1.0;
end loop;
opt := opt_base;
x := x + legend_width;
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.1,White, Red, 1, 0, 0,
opt_array, 1.0, text_scale, 2.0,
0.0, text_colors, text,
box_colors, box_patterns, box_scales, box_line_widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
max_height := Long_Float'max(max_height, legend_height);
-- Set up line legend entries with various colours.
for i in 0 .. nlegend - 1 loop
opt_array(i) := Pl_Legend_Line;
text(i) := TUB("Line Color" & Integer'image(i + 1));
text_colors(i) := i + 1;
line_colors(i) := i + 1;
line_styles(i) := 1;
line_widths(i) := 1.0;
end loop;
opt := opt_base;
-- Use new origin
x := xstart;
y := y + max_height;
max_height := 0.0;
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.1, White, Red, 1, 0, 0,
opt_array, 1.0, text_scale, 2.0,
0.0, text_colors, text,
box_colors, box_patterns, box_scales, box_line_widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
max_height := Long_Float'max(max_height, legend_height);
-- Set up line legend entries with various styles.
for i in 0 .. nlegend - 1 loop
opt_array(i) := Pl_Legend_Line;
text(i) := TUB("Line Style" & Integer'image(i + 1));
text_colors(i) := 2;
line_colors(i) := 2;
line_styles(i) := i + 1;
line_widths(i) := 1.0;
end loop;
opt := opt_base;
x := x + legend_width;
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.1, White, Red, 1, 0, 0,
opt_array, 1.0, text_scale, 2.0,
0.0, text_colors, text,
box_colors, box_patterns, box_scales, box_line_widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
max_height := Long_Float'max(max_height, legend_height);
-- Set up line legend entries with various widths.
for i in 0 .. nlegend - 1 loop
opt_array(i) := Pl_Legend_Line;
text(i) := TUB("Line Width" & Integer'image(i + 1));
text_colors(i) := 2;
line_colors(i) := 2;
line_styles(i) := 1;
line_widths(i) := Long_Float(i) + 1.0;
end loop;
opt := opt_base;
x := x + legend_width;
Set_One_Color_Map_0_And_Alpha(White, 32, 32, 32, 0.70);
Create_Legend(legend_width, legend_height, opt, position, x, y,
0.1, White, Red, 1, 0, 0,
opt_array, 1.0, text_scale, 2.0,
0.0, text_colors, text,
box_colors, box_patterns, box_scales, box_line_widths,
line_colors, line_styles, line_widths,
symbol_colors, symbol_scales, symbol_numbers, symbols);
max_height := Long_Float'max(max_height, legend_height);
end; -- declare
if colorbar then
-- Color bar examples
declare
values_small : Real_Vector(0 .. 1) := (-1.0e-200, 1.0e-200);
values_uneven : Real_Vector(0 .. 8) := (-1.0e-200, 2.0e-200, 2.6e-200, 3.4e-200,
6.0e-200, 7.0e-200, 8.0e-200, 9.0e-200, 10.0e-200);
values_even : Real_Vector(0 .. 8) := (-2.0e-200, -1.0e-200, 0.0e-200, 1.0e-200,
2.0e-200, 3.0e-200, 4.0e-200, 5.0e-200, 6.0e-200);
begin
-- Use unsaturated green background colour to contrast with black caps.
Set_Background_Color_RGB(70, 185, 70);
-- Cut out the greatest and smallest bits of the color spectrum to
-- leave colors for the end caps.
Set_Color_Map_1_Range(0.01, 0.99);
-- We can only test image and gradient colorbars with two element arrays
for i in 2 .. COLORBAR_KINDS - 1 loop
Create_Colorbar_example("cmap1_blue_yellow.pal", i, 0, 0.0, 2, values_small);
end loop;
-- Test shade colorbars with larger arrays
for i in 0 .. 1 loop
Create_Colorbar_example("cmap1_blue_yellow.pal", i, 4, 2.0, 9, values_even);
end loop;
for i in 0 .. 1 loop
Create_Colorbar_example("cmap1_blue_yellow.pal", i, 0, 0.0, 9, values_uneven);
end loop;
end;
end if;
End_PLplot;
end xthick33a;
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