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378 | -- --
-- package Test_Generator Copyright (c) Dmitry A. Kazakov --
-- Test waveform generator Luebeck --
-- Spring, 2011 --
-- --
-- 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.Real_Time; use Ada.Real_Time;
with GLib; use GLib;
with GLib.Properties; use GLib.Properties;
with Gtk.Enums; use Gtk.Enums;
with Gtk.Label; use Gtk.Label;
with Gtk.Layered.Waveform; use Gtk.Layered.Waveform;
with Gtk.Missed; use Gtk.Missed;
with Strings_Edit.Floats; use Strings_Edit.Floats;
with Ada.Numerics.Long_Elementary_Functions;
with Ada.Unchecked_Deallocation;
package body Test_Generator is
use Ada.Numerics.Long_Elementary_Functions;
procedure Changed
( Widget : access Gtk_Widget_Record'Class;
Wave : Wave_Generator
) is
begin
Wave.Worker.Set
( Duration (Value (Get_Text (Wave.Period_Edit))),
Duration (Value (Get_Text (Wave.Refresh_Edit)))
);
exception
when others =>
null;
end Changed;
procedure Changed_Shape
( Widget : access Gtk_Widget_Record'Class;
Wave : Wave_Generator
) is
begin
Wave.Shape :=
Wave_Shape'Val (Wave.Shape_Combo.Get_Active);
exception
when others =>
null;
end Changed_Shape;
procedure Destroy
( Widget : access Gtk_Widget_Record'Class;
Wave : Wave_Generator
) is
procedure Free is
new Ada.Unchecked_Deallocation
( Generator,
Generator_Ptr
);
begin
if Wave.Worker /= null then
Wave.Worker.Stop;
while not Wave.Worker'Terminated loop
delay 0.001;
end loop;
Free (Wave.Worker);
end if;
Wave.Buffer.Unref;
end Destroy;
function Get_Source
( Wave : not null access Wave_Generator_Record
) return not null access Waveform_Data_Source'Class is
begin
return Wave.Buffer.all'Unchecked_Access;
end Get_Source;
function Get_Buffer
( Wave : not null access Wave_Generator_Record
) return not null access
Gtk_Wavefrom_Ring_Data_Buffer_Record'Class is
begin
return Wave.Buffer;
end Get_Buffer;
procedure Gtk_New
( Wave : out Wave_Generator;
Shape : Wave_Shape;
Cycle : Duration;
Size : Positive := 10_100;
Period : Duration := 0.01
) is
begin
Wave := new Wave_Generator_Record;
Initialize (Wave, Shape, Cycle, Size, Period);
end Gtk_New;
procedure Gtk_New
( Wave : out Wave_Generator;
Shape : Wave_Shape;
Cycle : Duration;
Buffer : not null access
Gtk_Wavefrom_Ring_Data_Buffer_Record'Class;
Period : Duration := 0.01
) is
begin
Wave := new Wave_Generator_Record;
Initialize (Wave, Shape, Cycle, Buffer, Period);
end Gtk_New;
procedure Init
( Wave : not null access Wave_Generator_Record'Class;
Shape : Wave_Shape;
Cycle : Duration;
Period : Duration
) is
Label : Gtk_Label;
begin
Initialize (Wave, 3, 3, False);
Wave.Set_Row_Spacings (3);
Wave.Set_Col_Spacings (3);
-- Row 1
Gtk_New (Label, "Shape");
Label.Set_Halign (Align_End);
Label.Set_Valign (Align_Center);
Attach
( Wave,
Label,
0, 1, 0, 1,
XOptions => Fill,
YOptions => Shrink
);
Gtk_New (Wave.Shape_Combo);
Wave.Shape_Combo.Append_Text ("Constant");
Wave.Shape_Combo.Append_Text ("Modulated");
Wave.Shape_Combo.Append_Text ("Sine");
Wave.Shape_Combo.Append_Text ("Saw");
Wave.Shape_Combo.Append_Text ("Square");
Wave.Shape_Combo.Append_Text ("Triangle");
Wave.Shape_Combo.Set_Active (Wave_Shape'Pos (Shape));
Attach
( Wave,
Wave.Shape_Combo,
1, 3, 0, 1,
XOptions => Fill,
YOptions => Shrink
);
-- Row 2
Gtk_New (Label, "Cycle");
Label.Set_Halign (Align_End);
Label.Set_Valign (Align_Center);
Attach
( Wave,
Label,
0, 1, 1, 2,
XOptions => Fill,
YOptions => Shrink
);
Gtk_New (Wave.Period_Edit);
Wave.Period_Edit.Set_Width_Chars (6);
if Find_Property (Wave.Period_Edit, "max-width-chars") /= null
then
Set_Property
( Wave.Period_Edit,
Build ("max-width-chars"),
GInt'(6)
);
end if;
Set_Text (Wave.Period_Edit, Image (Float (Cycle)));
Attach
( Wave,
Wave.Period_Edit,
1, 2, 1, 2,
YOptions => Shrink
);
Gtk_New (Label, "s");
Attach
( Wave,
Label,
2, 3, 1, 2,
XOptions => Shrink,
YOptions => Shrink
);
-- Row 3
Gtk_New (Label, "Rate");
Label.Set_Halign (Align_End);
Label.Set_Valign (Align_Center);
Attach
( Wave,
Label,
0, 1, 2, 3,
XOptions => Fill,
YOptions => Shrink
);
Gtk_New (Wave.Refresh_Edit);
Wave.Refresh_Edit.Set_Width_Chars (6);
if Find_Property (Wave.Refresh_Edit, "max-width-chars") /= null
then
Set_Property
( Wave.Refresh_Edit,
Build ("max-width-chars"),
GInt'(6)
);
end if;
Set_Text (Wave.Refresh_Edit, Image (Float (Period)));
Attach
( Wave,
Wave.Refresh_Edit,
1, 2, 2, 3,
YOptions => Shrink
);
Gtk_New (Label, "s");
Attach
( Wave,
Label,
2, 3, 2, 3,
XOptions => Shrink,
YOptions => Shrink
);
Handlers.Connect
( Wave,
"destroy",
Destroy'Access,
Wave.all'Unchecked_Access
);
Handlers.Connect
( Wave.Period_Edit,
"changed",
Changed'Access,
Wave.all'Unchecked_Access
);
Handlers.Connect
( Wave.Refresh_Edit,
"changed",
Changed'Access,
Wave.all'Unchecked_Access
);
Handlers.Connect
( Wave.Shape_Combo,
"changed",
Changed_Shape'Access,
Wave.all'Unchecked_Access
);
Wave.Shape := Shape;
end Init;
procedure Initialize
( Wave : not null access Wave_Generator_Record'Class;
Shape : Wave_Shape;
Cycle : Duration;
Size : Positive;
Period : Duration
) is
begin
Init (Wave, Shape, Cycle, Period);
Gtk_New (Wave.Buffer, Size);
Wave.Worker := new Generator (Wave.all'Unchecked_Access);
Wave.Worker.Set (Cycle, Period);
end Initialize;
procedure Initialize
( Wave : not null access Wave_Generator_Record'Class;
Shape : Wave_Shape;
Cycle : Duration;
Buffer : not null access
Gtk_Wavefrom_Ring_Data_Buffer_Record'Class;
Period : Duration
) is
begin
Init (Wave, Shape, Cycle, Period);
Wave.Buffer := Buffer.all'Unchecked_Access;
Wave.Buffer.Ref;
Wave.Worker := new Generator (Wave.all'Unchecked_Access);
Wave.Worker.Set (Cycle, Period);
end Initialize;
task body Generator is
Cycle : Long_Float := 1.0;
Period : Duration := 100.0;
X : GDouble;
begin
loop
select
accept Stop;
exit;
or accept Set (Cycle, Period : Duration) do
Generator.Cycle := Long_Float (Cycle);
Generator.Period := Period;
end Set;
if Period < 0.001 then
Period := 0.001;
end if;
if Cycle < 0.001 then
Cycle := 0.001;
end if;
or delay Period;
X := To_Double (Clock);
case Wave.Shape is
when Modulated =>
Wave.Buffer.Put
( T => X_Axis (X),
V => Y_Axis
( sin (Long_Float (X), Cycle / 5.7)
* sin (Long_Float (X), Cycle * 4.3)
) );
when Sine =>
Wave.Buffer.Put
( T => X_Axis (X),
V => Y_Axis (sin (Long_Float (X), Cycle))
);
when Saw =>
Wave.Buffer.Put
( T => X_Axis (X),
V => ( 2.0
* Y_Axis'Remainder
( Y_Axis (X),
Y_Axis (Cycle)
)
/ Y_Axis (Cycle)
) );
when Triangle =>
Wave.Buffer.Put
( T => X_Axis (X),
V => ( 4.0
* abs Y_Axis'Remainder
( Y_Axis (X),
Y_Axis (Cycle)
)
/ Y_Axis (Cycle)
- 1.0
) );
when Square =>
if ( Y_Axis'Remainder (Y_Axis (X), Y_Axis (Cycle))
>= 0.0
)
then
Wave.Buffer.Put (T => X_Axis (X), V => 1.0);
else
Wave.Buffer.Put (T => X_Axis (X), V => 0.0);
end if;
when Const =>
Wave.Buffer.Put
( T => X_Axis (X),
V => Y_Axis (0.0)
);
end case;
end select;
end loop;
end Generator;
procedure Set_Shape
( Wave : not null access Wave_Generator_Record;
Shape : Wave_Shape
) is
begin
Wave.Shape_Combo.Set_Active (Wave_Shape'Pos (Shape));
end Set_Shape;
end Test_Generator;
|