dao/DelphiScanner/Utils.pas

unit Utils;

interface
uses
  Controls,
  Graphics //TColor
  ;

type
  TStrArray = array of string;

  TUtils = class
    class function split(input: string; schar: Char; s: Integer): string;
    class function Explode(var a: TStrArray; Border, S: string): Integer;

    class procedure RoundCornerOf(Control: TWinControl);
    class function BarCodeValid (ACode: string): boolean;
    class function CheckSumModulo10(const data:string):string;

    class function TColorToHex(Color : TColor) : string;
    class function HexToTColor(sColor : string) : TColor;

    class function AdobeReaderExists(): Boolean;


  end;

implementation

uses StrUtils,
  Types, //TRect ,
  Windows,
  Messages,
  SysUtils, //IntToStr etc
  Registry

  ;

{
 VERY fast split function
 this function returns part of a string based on
 constant defineable delimiters, such as ";". So
 SPLIT('this is a test ',' ',3) = 'is' or
 SPLIT('data;another;yet;again;more;',';',4) = 'yet'

 Split function shifts index integer by two to
 be compatible with commonly used PD split function
 gpl 2004 / Juhani Suhonen
}
class function TUtils.split(input: string; schar: Char; s: Integer): string;
var
  c: array of Integer;
  b, t: Integer;
begin
  Dec(s, 2);  // for compatibility with very old & slow split function
  t := 0;     // variable T needs to be initialized...
  setlength(c, Length(input));
  for b := 0 to pred(High(c)) do
  begin
    c[b + 1] := posex(schar, input, succ(c[b]));
    // BREAK LOOP if posex looped (position before previous)
    // or wanted position reached..
    if (c[b + 1] < c[b]) or (s < t) then break
    else
      Inc(t);
  end;
  Result := Copy(input, succ(c[s]), pred(c[s + 1] - c[s]));
end;

class function TUtils.Explode(var a: TStrArray; Border, S: string): Integer;
var
  S2: string;
begin
  Result  := 0;
  S2 := S + Border;
  repeat
    SetLength(A, Length(A) + 1);
    a[Result] := Copy(S2, 0,Pos(Border, S2) - 1);
    Delete(S2, 1,Length(a[Result] + Border));
    Inc(Result);
  until S2 = '';
end;


class procedure TUtils.RoundCornerOf(Control: TWinControl);
var
   R: TRect;
   Rgn: HRGN;
begin
   with Control do
   begin
     R := ClientRect;
//     rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 20, 20) ;
     rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 25, 25) ;
//     rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 30, 30) ;
     Perform(EM_GETRECT, 0, lParam(@r)) ;
     InflateRect(r, - 4, - 4) ;
     Perform(EM_SETRECTNP, 0, lParam(@r)) ;
     SetWindowRgn(Handle, rgn, True) ;
     Invalidate;
   end;
end;


class function TUtils.BarCodeValid (ACode: string): boolean;
var
   I: integer;
   SumOdd, SumEven: integer;
   ADigit, AChecksumDigit: integer;
begin
   SumOdd := 0;
   SumEven := 0;
   for I := 1 to (Length (ACode) - 1) do begin
      ADigit := StrToIntDef (ACode [I], 0);
      if (I MOD 2 = 0) then begin
         SumEven := SumEven + ADigit;
      end else begin
         SumOdd := SumOdd + ADigit;
      end; {if}
   end; {for}
   AChecksumDigit := StrToIntDef (ACode [Length (ACode)], 0);
   Result := ((SumOdd*3 + SumEven + AChecksumDigit) MOD 10 = 0);
end; {--BarCodeValid--}

{ used for EAN 8/13 }
class function TUtils.CheckSumModulo10(const data:string):string;
        var i,fak,sum : Integer;
begin
        sum := 0;
        fak := Length(data);
        for i:=1 to Length(data) do
        begin
                if (fak mod 2) = 0 then
                        sum := sum + (StrToInt(data[i])*1)
                else
                        sum := sum + (StrToInt(data[i])*3);
                dec(fak);
        end;
        if (sum mod 10) = 0 then
                result := data+'0'
        else
                result := data+IntToStr(10-(sum mod 10));
end;


class function TUtils.TColorToHex(Color : TColor) : string;
begin
   Result :=
     IntToHex(GetRValue(Color), 2) +
     IntToHex(GetGValue(Color), 2) +
     IntToHex(GetBValue(Color), 2) ;
end;

class function TUtils.HexToTColor(sColor : string) : TColor;
begin
   Result :=
     RGB(
       StrToInt('$'+Copy(sColor, 1, 2)),
       StrToInt('$'+Copy(sColor, 3, 2)),
       StrToInt('$'+Copy(sColor, 5, 2))
     ) ;
end;


class function TUtils.AdobeReaderExists(): Boolean;
var
  AReg: TRegistry;
begin
  result:= false;
  AReg := TRegistry.Create;
  AReg.RootKey := HKEY_LOCAL_MACHINE;
  if AReg.KeyExists('\SOFTWARE\Adobe\Acrobat Reader') then
    result:= True;
  AReg.Free;
end;

end.
1	unit Utils;
2
3	interface
4	uses
5	Controls,
6	Graphics //TColor
7	;
8
9	type
10	TStrArray = array of string;
11
12	TUtils = class
13	class function split(input: string; schar: Char; s: Integer): string;
14	class function Explode(var a: TStrArray; Border, S: string): Integer;
15
16	class procedure RoundCornerOf(Control: TWinControl);
17	class function BarCodeValid (ACode: string): boolean;
18	class function CheckSumModulo10(const data:string):string;
19
20	class function TColorToHex(Color : TColor) : string;
21	class function HexToTColor(sColor : string) : TColor;
22
23	class function AdobeReaderExists(): Boolean;
24
25
26
27
28	end;
29
30	implementation
31
32	uses StrUtils,
33	Types, //TRect ,
34	Windows,
35	Messages,
36	SysUtils, //IntToStr etc
37	Registry
38
39	;
40
41	{
42	VERY fast split function
43	this function returns part of a string based on
44	constant defineable delimiters, such as ";". So
45	SPLIT('this is a test ',' ',3) = 'is' or
46	SPLIT('data;another;yet;again;more;',';',4) = 'yet'
47
48	Split function shifts index integer by two to
49	be compatible with commonly used PD split function
50	gpl 2004 / Juhani Suhonen
51	}
52	class function TUtils.split(input: string; schar: Char; s: Integer): string;
53	var
54	c: array of Integer;
55	b, t: Integer;
56	begin
57	Dec(s, 2); // for compatibility with very old & slow split function
58	t := 0; // variable T needs to be initialized...
59	setlength(c, Length(input));
60	for b := 0 to pred(High(c)) do
61	begin
62	c[b + 1] := posex(schar, input, succ(c[b]));
63	// BREAK LOOP if posex looped (position before previous)
64	// or wanted position reached..
65	if (c[b + 1] < c[b]) or (s < t) then break
66	else
67	Inc(t);
68	end;
69	Result := Copy(input, succ(c[s]), pred(c[s + 1] - c[s]));
70	end;
71
72	class function TUtils.Explode(var a: TStrArray; Border, S: string): Integer;
73	var
74	S2: string;
75	begin
76	Result := 0;
77	S2 := S + Border;
78	repeat
79	SetLength(A, Length(A) + 1);
80	a[Result] := Copy(S2, 0,Pos(Border, S2) - 1);
81	Delete(S2, 1,Length(a[Result] + Border));
82	Inc(Result);
83	until S2 = '';
84	end;
85
86
87
88	class procedure TUtils.RoundCornerOf(Control: TWinControl);
89	var
90	R: TRect;
91	Rgn: HRGN;
92	begin
93	with Control do
94	begin
95	R := ClientRect;
96	// rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 20, 20) ;
97	rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 25, 25) ;
98	// rgn := CreateRoundRectRgn(R.Left, R.Top, R.Right, R.Bottom, 30, 30) ;
99	Perform(EM_GETRECT, 0, lParam(@r)) ;
100	InflateRect(r, - 4, - 4) ;
101	Perform(EM_SETRECTNP, 0, lParam(@r)) ;
102	SetWindowRgn(Handle, rgn, True) ;
103	Invalidate;
104	end;
105	end;
106
107
108	class function TUtils.BarCodeValid (ACode: string): boolean;
109	var
110	I: integer;
111	SumOdd, SumEven: integer;
112	ADigit, AChecksumDigit: integer;
113	begin
114	SumOdd := 0;
115	SumEven := 0;
116	for I := 1 to (Length (ACode) - 1) do begin
117	ADigit := StrToIntDef (ACode [I], 0);
118	if (I MOD 2 = 0) then begin
119	SumEven := SumEven + ADigit;
120	end else begin
121	SumOdd := SumOdd + ADigit;
122	end; {if}
123	end; {for}
124	AChecksumDigit := StrToIntDef (ACode [Length (ACode)], 0);
125	Result := ((SumOdd*3 + SumEven + AChecksumDigit) MOD 10 = 0);
126	end; {--BarCodeValid--}
127
128	{ used for EAN 8/13 }
129	class function TUtils.CheckSumModulo10(const data:string):string;
130	var i,fak,sum : Integer;
131	begin
132	sum := 0;
133	fak := Length(data);
134	for i:=1 to Length(data) do
135	begin
136	if (fak mod 2) = 0 then
137	sum := sum + (StrToInt(data[i])*1)
138	else
139	sum := sum + (StrToInt(data[i])*3);
140	dec(fak);
141	end;
142	if (sum mod 10) = 0 then
143	result := data+'0'
144	else
145	result := data+IntToStr(10-(sum mod 10));
146	end;
147
148
149	class function TUtils.TColorToHex(Color : TColor) : string;
150	begin
151	Result :=
152	IntToHex(GetRValue(Color), 2) +
153	IntToHex(GetGValue(Color), 2) +
154	IntToHex(GetBValue(Color), 2) ;
155	end;
156
157	class function TUtils.HexToTColor(sColor : string) : TColor;
158	begin
159	Result :=
160	RGB(
161	StrToInt('$'+Copy(sColor, 1, 2)),
162	StrToInt('$'+Copy(sColor, 3, 2)),
163	StrToInt('$'+Copy(sColor, 5, 2))
164	) ;
165	end;
166
167
168	class function TUtils.AdobeReaderExists(): Boolean;
169	var
170	AReg: TRegistry;
171	begin
172	result:= false;
173	AReg := TRegistry.Create;
174	AReg.RootKey := HKEY_LOCAL_MACHINE;
175	if AReg.KeyExists('\SOFTWARE\Adobe\Acrobat Reader') then
176	result:= True;
177	AReg.Free;
178	end;
179
180	end.