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{
fpGUI - Free Pascal GUI Library
Copyright (C) 2006 - 2009 See the file AUTHORS.txt, included in this
distribution, for details of the copyright.
See the file COPYING.modifiedLGPL, included in this distribution,
for details about redistributing fpGUI.
This program 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.
Description:
This unit contains the Character Map form used by edit components
to insert special characters, when the user might not know the
actual character code.
}
{ TODO : This unit needs to be localized }
{ TODO : This dialog needs to be incorporated with TfpgEdit popup menu. }
{%mainunit fpg_dialogs.pas}
{$IFDEF read_interface}
TCharMapForm = class(TfpgForm)
private
{@VFD_HEAD_BEGIN: CharMapForm}
StringGrid1: TfpgStringGrid;
Button1: TfpgButton;
lblCharInfo: TfpgLabel;
edText: TfpgEdit;
lblText: TfpgLabel;
pnlChar: TfpgPanel;
{@VFD_HEAD_END: CharMapForm}
procedure FormShow(Sender: TObject);
procedure StringGrid1FocusChange(Sender: TObject; ARow, ACol: integer);
procedure StringGrid1DrawCell(Sender: TObject; const ARow, ACol: integer; const ARect: TfpgRect; const AFlags: TfpgGridDrawState; var ADefaultDrawing: boolean);
procedure StringGrid1CanSelectCell(Sender: TObject; const ARow, ACol: integer; var ACanSelect: boolean);
procedure StringGrid1DoubleClick(Sender: TObject; AButton: TMouseButton; AShift: TShiftState; const AMousePos: TPoint);
procedure FillCharMap;
procedure Button1Clicked(Sender: TObject);
function GetNewText: TfpgString;
public
procedure AfterCreate; override;
property NewText: TfpgString read GetNewText;
end;
function fpgShowCharMap: TfpgString;
{$ENDIF read_interface}
{$IFDEF read_implementation}
function fpgShowCharMap: TfpgString;
var
frm: TCharMapForm;
begin
Result := '';
frm := TCharMapForm.Create(nil);
try
frm.ShowModal;
Result := frm.NewText;
finally
frm.Free;
end;
end;
{ TCharMapForm }
procedure TCharMapForm.FormShow(Sender: TObject);
begin
FillCharMap;
end;
procedure TCharMapForm.StringGrid1FocusChange(Sender: TObject; ARow, ACol: integer);
var
i: integer;
tmp, tmp2: TfpgString;
begin
if (ARow > 0) and (ACol > 0) then
begin
tmp := StringGrid1.Cells[ACol, ARow];
tmp2 := '';
// generate UTF-8 byte representation
for i := 1 to Length(tmp) do
tmp2 := tmp2 + '$' + IntToHex(Ord(tmp[i]), 2);
lblCharInfo.Text := 'U+' + inttohex(Ord(tmp[1]), 4) + ', UTF-8 = ' + tmp2;
pnlChar.Text := tmp;
end
else
begin
lblCharInfo.Text := '-';
pnlChar.Text := '';
end;
end;
procedure TCharMapForm.StringGrid1DrawCell(Sender: TObject;
const ARow, ACol: integer; const ARect: TfpgRect; const AFlags: TfpgGridDrawState;
var ADefaultDrawing: boolean);
begin
if (ARow = 0) or (ACol = 0) then
begin
ADefaultDrawing := False;
StringGrid1.Canvas.Color := clWindowBackground;
StringGrid1.Canvas.FillRectangle(ARect);
//StringGrid1.Canvas.DrawButtonFace(ARect, []);
StringGrid1.Canvas.TextColor := clText1; //clGray;
StringGrid1.Canvas.DrawText(ARect, StringGrid1.Cells[ACol, ARow],
[txtHCenter, txtVCenter]);
end
else
ADefaultDrawing := True;
end;
procedure TCharMapForm.StringGrid1CanSelectCell(Sender: TObject;
const ARow, ACol: integer; var ACanSelect: boolean);
begin
if (ACol = 0) or (ARow = 0) then
ACanSelect := False
else
ACanSelect := True;
end;
procedure TCharMapForm.StringGrid1DoubleClick(Sender: TObject;
AButton: TMouseButton; AShift: TShiftState; const AMousePos: TPoint);
begin
edText.Text := edText.Text + StringGrid1.Cells[StringGrid1.FocusCol, StringGrid1.FocusRow];
end;
procedure TCharMapForm.FillCharMap;
var
i: byte;
j: byte;
c: byte;
begin
StringGrid1.BeginUpdate;
try
StringGrid1.ColumnCount := 17;
StringGrid1.RowCount := 17;
StringGrid1.ShowHeader := False;
for i := 0 to 15 do
begin
for j := 0 to 15 do
begin
StringGrid1.ColumnWidth[j] := 20;
c := i shl 4 or j;
if (c > 0) and (c < 128) then
StringGrid1.Cells[j + 1, i + 1] := chr(c)
else
StringGrid1.Cells[j + 1, i + 1] :=
chr($C0 or (i div $4)) + chr($80 or c mod $40);
end;
StringGrid1.Cells[0, i + 1] := Format('%.2x +', [i]);
StringGrid1.Cells[i + 1, 0] := Format('%.2x', [i]);
end;
StringGrid1.ColumnWidth[0] := 30;
StringGrid1.ColumnWidth[16] := 20;
StringGrid1.Cells[0, 0] := '00';
finally
StringGrid1.FocusCol := 1;
StringGrid1.FocusRow := 1;
StringGrid1.EndUpdate;
end;
end;
procedure TCharMapForm.Button1Clicked(Sender: TObject);
begin
Close;
end;
function TCharMapForm.GetNewText: TfpgString;
begin
Result := edText.Text;
end;
procedure TCharMapForm.AfterCreate;
begin
{%region 'Auto-generated GUI code' -fold}
{@VFD_BODY_BEGIN: CharMapForm}
Name := 'CharMapForm';
SetPosition(316, 186, 377, 390);
WindowTitle := 'Character Map';
WindowPosition := wpAuto;
OnShow := @FormShow;
StringGrid1 := TfpgStringGrid.Create(self);
with StringGrid1 do
begin
Name := 'StringGrid1';
SetPosition(4, 4, 368, 296);
Anchors := [anLeft,anRight,anTop,anBottom];
FontDesc := '#Grid';
HeaderFontDesc := '#GridHeader';
RowCount := 0;
RowSelect := False;
TabOrder := 0;
OnFocusChange := @StringGrid1FocusChange;
OnDrawCell := @StringGrid1DrawCell;
OnCanSelectCell := @StringGrid1CanSelectCell;
OnDoubleClick := @StringGrid1DoubleClick;
end;
Button1 := TfpgButton.Create(self);
with Button1 do
begin
Name := 'Button1';
SetPosition(292, 360, 80, 24);
Anchors := [anRight,anBottom];
Text := 'Close';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 1;
OnClick := @Button1Clicked;
end;
lblCharInfo := TfpgLabel.Create(self);
with lblCharInfo do
begin
Name := 'lblCharInfo';
SetPosition(4, 304, 268, 16);
Anchors := [anLeft,anBottom];
FontDesc := '#Label1';
Hint := '';
Text := 'Label';
end;
edText := TfpgEdit.Create(self);
with edText do
begin
Name := 'edText';
SetPosition(108, 326, 156, 24);
Anchors := [anLeft,anBottom];
TabOrder := 3;
Text := '';
FontDesc := '#Edit1';
end;
lblText := TfpgLabel.Create(self);
with lblText do
begin
Name := 'lblText';
SetPosition(4, 330, 100, 16);
Anchors := [anLeft,anBottom];
FontDesc := '#Label1';
Hint := '';
Text := 'Text to Insert:';
end;
pnlChar := TfpgPanel.Create(self);
with pnlChar do
begin
Name := 'pnlChar';
SetPosition(292, 304, 60, 48);
Anchors := [anLeft,anRight,anTop,anBottom];
FontDesc := 'Arial-16:antialias=true';
Style := bsLowered;
Text := '';
end;
{@VFD_BODY_END: CharMapForm}
{%endregion}
end;
{$ENDIF read_implementation}
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