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	torben	2682	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	torben	2685	class function AdobeReaderExists(): Boolean;
24	torben	2682
25
26
27	torben	2685
28	torben	2682	end;
29
30			implementation
31
32			uses StrUtils,
33			Types, //TRect ,
34			Windows,
35			Messages,
36	torben	2685	SysUtils, //IntToStr etc
37			Registry
38
39	torben	2682	;
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	torben	2685	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	torben	2682	end.