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199 | -- --
-- procedure Copyright (c) Dmitry A. Kazakov --
-- Test_Oscilloscope_Stacked Luebeck --
-- Test oscilloscopes stacked up Summer, 2011 --
-- into a rack --
-- Last revision : 13:15 14 Sep 2019 --
-- --
-- This library is free software; you can redistribute it and/or --
-- modify it under the terms of the GNU General Public License as --
-- published by the Free Software Foundation; either version 2 of --
-- the License, or (at your option) any later version. This library --
-- 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 --
-- General Public License for more details. You should have --
-- received a copy of the GNU General Public License along with --
-- this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from --
-- this unit, or you link this unit with other files to produce an --
-- executable, this unit does not by itself cause the resulting --
-- executable to be covered by the GNU General Public License. This --
-- exception does not however invalidate any other reasons why the --
-- executable file might be covered by the GNU Public License. --
--____________________________________________________________________--
with Ada.Exceptions; use Ada.Exceptions;
with Ada.Numerics.Float_Random; use Ada.Numerics.Float_Random;
with Ada.Text_IO; use Ada.Text_IO;
with Gdk.Color; use Gdk.Color;
with Gdk.Color.IHLS; use Gdk.Color.IHLS;
with GLib; use GLib;
with Gtk.Box; use Gtk.Box;
with Gtk.Drawing_Area; use Gtk.Drawing_Area;
with Gtk.Enums; use Gtk.Enums;
with Gtk.Label; use Gtk.Label;
with Gtk.Layered.Refresh_Engine; use Gtk.Layered.Refresh_Engine;
with Gtk.Missed; use Gtk.Missed;
with Gtk.Notebook; use Gtk.Notebook;
with Gtk.Oscilloscope; use Gtk.Oscilloscope;
with Gtk.Table; use Gtk.Table;
with Gtk.Widget; use Gtk.Widget;
with Gtk.Window; use Gtk.Window;
with Test_Generator; use Test_Generator;
with Gtk.Main.Router.GNAT_Stack;
procedure Test_Oscilloscope_Stack is
Stack_Height : constant := 5; -- Number of oscilloscopes
Axis_Height : constant := 20; -- Lower horizontal axis height
Axis_Width : constant := 35; -- Left vertical axis width
Period : constant Duration := 0.02; -- Refresh period
Rate : constant Duration := 0.01; -- Generator rate
First : constant Gdk_Color := RGB (1.00, 0.00, 0.00);
Background : constant Gdk_Color := RGB (0.00, 0.00, 0.00);
Major_Line : constant Gdk_Color := RGB (0.22, 0.22, 0.22);
Minor_Line : constant Gdk_Color := RGB (0.12, 0.12, 0.12);
Window : Gtk_Window;
Engine : aliased Layered_Refresh_Engine;
begin
Gtk.Main.Init;
Gtk.Main.Router.GNAT_Stack.Set_Log_Trace ("Gtk");
Gtk.Main.Router.GNAT_Stack.Set_Log_Trace ("GLib-GObject");
Gtk.Main.Router.GNAT_Stack.Set_Log_Trace ("GtkAda+");
Gtk.Window.Gtk_New (Window);
Gtk.Main.Router.Init (Window);
Window.Set_Title ("Test Ada industrial control widget library");
Window.On_Delete_Event (Gtk.Missed.Delete_Event_Handler'Access);
Window.On_Destroy (Gtk.Missed.Destroy_Handler'Access);
Engine.Set_Period (Period);
declare
Dice : Ada.Numerics.Float_Random.Generator;
Pages : Gtk_Notebook;
Grid : Gtk_Table;
Scaler : Gtk_Oscilloscope;
begin
Gtk_New (Grid, Stack_Height + 1, 2, False);
Grid.Set_Col_Spacings (3);
Grid.Set_Row_Spacings (3);
if True then
Gtk_New (Pages);
Window.Add (Pages);
declare
Label : Gtk_Label;
Box : Gtk_HBox;
begin
Gtk_New (Box, Orientation_Horizontal, 3);
Label := Gtk_Label_New ("Test");
Box.Pack_Start (Label);
Box.Show_All;
Pages.Append_Page (Grid, Box);
end;
else
Window.Add (Grid);
end if;
--
-- Create the lowest oscilloscope used to sync all others, but
-- showing no signal by itself. Left on the oscilloscope a box is
-- placed to reserve Scale_Width space.
--
declare
Box : Gtk_HBox;
Filler : Gtk_Drawing_Area;
begin
Gtk_New_HBox (Box);
Box.Set_App_Paintable (True);
Gtk_New (Filler);
Filler.Set_Size_Request (Axis_Width, Axis_Height);
Box.Pack_Start (Filler, False, False);
Gtk_New
( Widget => Scaler,
Refresh_Engine => Engine'Access
);
Scaler.Set_Time_Axis_Height (Lower, Axis_Height);
Scaler.Set_Time_Axis (Lower, True);
Box.Pack_Start (Scaler);
Grid.Attach
( Child => Box,
Left_Attach => 0,
Right_Attach => 1,
Top_Attach => Stack_Height,
Bottom_Attach => Stack_Height + 1,
Yoptions => Shrink
);
end;
for Slot in GUInt range 1..Stack_Height loop
declare
Oscilloscope : Gtk_Oscilloscope;
Generator : Wave_Generator;
Channel : Channel_Number;
begin
-- Create a generator for this slot
Gtk_New
( Wave => Generator,
Cycle => 3.0 + 4.0 * Duration (Random (Dice)),
Period => Rate,
Shape => Wave_Shape'Val
( Slot
mod
(Wave_Shape'Pos (Wave_Shape'Last) + 1)
) );
Grid.Attach
( Child => Generator,
Left_Attach => 1,
Right_Attach => 2,
Top_Attach => Slot - 1,
Bottom_Attach => Slot,
Xoptions => Shrink
);
-- Create an oscilloscope for this slot
Gtk.Oscilloscope.Gtk_New
( Widget => Oscilloscope,
Background => Background,
Lower_Sweeper => Scaler.Get_Sweeper (Lower),
Refresh_Engine => Engine'Access
);
Grid.Attach
( Child => Oscilloscope,
Left_Attach => 0,
Right_Attach => 1,
Top_Attach => Slot - 1,
Bottom_Attach => Slot
);
Oscilloscope.Set_Size_Request (300, 50);
Channel :=
Oscilloscope.Add_Channel
( Buffer => Generator.Get_Buffer,
Sweeper => Lower,
Color =>
To_RGB
( Val
( First => To_IHLS (First),
Pos => Natural (Slot - 1),
Cycle => 6
) ) );
Oscilloscope.Set_Group
( Left,
Oscilloscope.Get_Group (Channel)
);
Oscilloscope.Set_Values_Axis (Left, True);
Oscilloscope.Set_Values_Axis_Width (Left, Axis_Width);
-- Disable any scales
Oscilloscope.Set_Time_Scale (Lower, False);
Oscilloscope.Set_Time_Scale (Upper, False);
Oscilloscope.Set_Values_Scale (Left, False);
Oscilloscope.Set_Values_Scale (Right, False);
Oscilloscope.Set_Grid_Colors (Major_Line, Minor_Line);
end;
end loop;
end;
Window.Show_All;
Gtk.Main.Main;
exception
when Error : others =>
Put_Line ("Error: " & Exception_Information (Error));
end Test_Oscilloscope_Stack;
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