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https://gitlab.com/freepascal.org/lazarus/lazarus.git
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417 lines
12 KiB
ObjectPascal
417 lines
12 KiB
ObjectPascal
{
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/***************************************************************************
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charactermapdlg.pas
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-------------------
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***************************************************************************/
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***************************************************************************
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* *
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* This source is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This code is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* General Public License for more details. *
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* *
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* A copy of the GNU General Public License is available on the World *
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* Wide Web at <http://www.gnu.org/copyleft/gpl.html>. You can also *
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* obtain it by writing to the Free Software Foundation, *
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* Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1335, USA. *
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* *
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***************************************************************************
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Author: Mattias Gaertner
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Abstract:
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Dialog for character map.
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}
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unit CharacterMapDlg;
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{$mode objfpc}{$H+}
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interface
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uses
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{$ifdef WINDOWS}Windows,{$endif}
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Classes, SysUtils, Math,
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// LCL
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Controls, Graphics, Dialogs, Buttons, StdCtrls, Forms,
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LCLType, LCLUnicodeData, Grids, ButtonPanel, ComCtrls,
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// LazUtils
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GraphType, LazUTF8, LConvEncoding,
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// IdeIntf
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IDEHelpIntf, IDEImagesIntf,
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// IDE
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LazarusIDEStrConsts, EditorOptions, EnvironmentOpts;
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type
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TOnInsertCharacterEvent = procedure (const C: TUTF8Char) of object;
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{ TCharacterMapDialog }
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TCharacterMapDialog = class(TForm)
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ButtonPanel: TButtonPanel;
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cbCodePage: TComboBox;
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AnsiCharInfoLabel: TLabel;
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cbUniRange: TComboBox;
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SortUniRangeListButton: TSpeedButton;
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CodePageLabel: TLabel;
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RangeLabel: TLabel;
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UnicodeCharInfoLabel: TLabel;
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PageControl1: TPageControl;
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AnsiGrid: TStringGrid;
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UnicodeGrid: TStringGrid;
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pgAnsi: TTabSheet;
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pgUnicode: TTabSheet;
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procedure GridPrepareCanvas(sender: TObject; {%H-}aCol, {%H-}aRow: Integer;
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{%H-}aState: TGridDrawState);
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procedure cbCodePageSelect(Sender: TObject);
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procedure cbUniRangeSelect(Sender: TObject);
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procedure FormKeyDown(Sender: TObject; var Key: Word; {%H-}Shift: TShiftState);
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procedure HelpButtonClick(Sender: TObject);
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procedure FormCreate(Sender: TObject);
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procedure FormShow(Sender: TObject);
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procedure SortUniRangeListButtonClick(Sender: TObject);
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procedure AnsiGridSelectCell(Sender: TObject; aCol, aRow: Integer;
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var {%H-}CanSelect: Boolean);
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procedure UnicodeGridSelectCell(Sender: TObject; aCol, aRow: Integer;
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var {%H-}CanSelect: Boolean);
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procedure StringGridKeyPress(Sender: TObject; var Key: char);
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procedure StringGridMouseDown(Sender: TObject; Button: TMouseButton;
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{%H-}Shift: TShiftState; X, Y: Integer);
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procedure AnsiGridMouseMove(Sender: TObject; {%H-}Shift: TShiftState; X,
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Y: Integer);
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procedure UnicodeGridMouseMove(Sender: TObject; {%H-}Shift: TShiftState; X,
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Y: Integer);
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private
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FOnInsertCharacter: TOnInsertCharacterEvent;
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FUnicodeBlockIndex: Integer;
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procedure DoStatusAnsiGrid(ACol, ARow: integer);
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procedure DoStatusUnicodeGrid(ACol, ARow: integer);
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procedure FillAnsiGrid;
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procedure FillUnicodeGrid;
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procedure FillUniRangeList(ASorted: Boolean);
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function UnicodeBlockIndexByName(AName: String): Integer;
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function UnicodeBlockSelected: Boolean;
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procedure SelectSystemCP;
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public
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property OnInsertCharacter: TOnInsertCharacterEvent read FOnInsertCharacter
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write FOnInsertCharacter;
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end;
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procedure ShowCharacterMap(AOnInsertChar: TOnInsertCharacterEvent);
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var
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CharacterMapDialog: TCharacterMapDialog;
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implementation
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{$R *.lfm}
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const
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NOT_SELECTED=Low(UnicodeBlocks)-1;
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procedure ShowCharacterMap(AOnInsertChar: TOnInsertCharacterEvent);
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begin
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if CharacterMapDialog = nil then
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Application.CreateForm(TCharacterMapDialog, CharacterMapDialog);
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CharacterMapDialog.OnInsertCharacter := AOnInsertChar;
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CharacterMapDialog.Show;
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end;
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{ TCharacterMapDialog }
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procedure TCharacterMapDialog.FormCreate(Sender: TObject);
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begin
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Caption := lisCharacterMap;
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RangeLabel.Caption := lisRange;
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SortUniRangeListButton.Flat:=True;
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SortUniRangeListButton.Hint:=lisSortUnicodeRangeListAlphabetically;
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IDEImages.AssignImage(SortUniRangeListButton, 'pkg_sortalphabetically');
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ButtonPanel.HelpButton.Caption:=lisMenuHelp;
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ButtonPanel.CloseButton.Caption:=lisBtnClose;
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//EnvironmentOptions.IDEWindowLayoutList.Apply(Self, Name);
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PageControl1.ActivePageIndex := 0;
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AnsiCharInfoLabel.Caption := '-';
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UnicodeCharInfoLabel.Caption := '-';
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SelectSystemCP;
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FillAnsiGrid;
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end;
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procedure TCharacterMapDialog.SelectSystemCP;
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{$ifdef Windows}
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var
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i: Integer;
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cp: Word;
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cpStr: String;
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{$endif}
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begin
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{$ifdef Windows}
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// Find system code page on Windows...
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// see: msdn.microsoft.com/library/windows/desktop/dd317756%28v=vs.85%29.aspx
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cp := Windows.GetACP;
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case cp of // add spaces to be sure of unique names found in the combobox
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437..1258: cpStr := 'cp' + IntToStr(cp) + ' ';
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10000 : cpStr := 'macintosh ';
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20866 : cpStr := 'koi8 ';
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28591 : cpStr := 'iso88591 ';
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28592 : cpStr := 'iso88592 ';
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28605 : cpStr := 'iso885915 ';
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else cpStr := '';
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end;
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for i := 0 to cbCodePage.Items.Count-1 do
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if pos(cpStr, cbCodePage.Items[i]) = 1 then
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begin
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cbCodePage.ItemIndex := i;
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exit;
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end;
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{$endif}
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// ... if not found, or non-Windows, just pick the first item.
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cbCodePage.ItemIndex := 0;
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end;
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procedure TCharacterMapDialog.HelpButtonClick(Sender: TObject);
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begin
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LazarusHelp.ShowHelpForIDEControl(Self);
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end;
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function RoundUp(Value, Divi:integer):integer;
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begin
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if Value mod Divi = 0 then
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Result:=Value div Divi
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else
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Result:=(Value div Divi)+1;
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end;
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procedure TCharacterMapDialog.cbCodePageSelect(Sender: TObject);
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begin
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FillAnsiGrid;
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end;
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procedure TCharacterMapDialog.cbUniRangeSelect(Sender: TObject);
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begin
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FUnicodeBlockIndex:=UnicodeBlockIndexByName(cbUniRange.Text);
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FillUnicodeGrid;
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end;
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procedure TCharacterMapDialog.FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
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begin
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if Key=VK_ESCAPE then
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begin
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Close;
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Key:= 0;
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end;
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end;
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procedure TCharacterMapDialog.FormShow(Sender: TObject);
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begin
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AnsiGrid.Font.Name := EditorOpts.EditorFont;
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UnicodeGrid.Font.Name := EditorOpts.EditorFont;
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AnsiGrid.Font.Size := 10;
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UnicodeGrid.Font.Size := 10;
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AnsiGrid.AutoSizeColumn(0);
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AnsiGrid.AutoFillColumns := true;
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FUnicodeBlockIndex:=NOT_SELECTED;
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FillUniRangeList(SortUniRangeListButton.Down);
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FillUnicodeGrid;
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cbCodePage.DropDownCount := Math.max(EnvironmentOptions.DropDownCount, 25);
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cbUniRange.DropDownCount := Math.max(EnvironmentOptions.DropDownCount, 25);
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end;
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procedure TCharacterMapDialog.SortUniRangeListButtonClick(Sender: TObject);
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begin
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FillUniRangeList(SortUniRangeListButton.Down);
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end;
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procedure TCharacterMapDialog.AnsiGridSelectCell(Sender: TObject; aCol,
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aRow: Integer; var CanSelect: Boolean);
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begin
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DoStatusAnsiGrid(aCol, aRow);
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end;
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procedure TCharacterMapDialog.UnicodeGridSelectCell(Sender: TObject; aCol,
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aRow: Integer; var CanSelect: Boolean);
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begin
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DoStatusUnicodeGrid(aCol, aRow);
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end;
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procedure TCharacterMapDialog.StringGridKeyPress(Sender: TObject; var Key: char);
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var
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sg: TStringGrid;
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s: string;
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begin
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if Key = #13 then
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begin
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sg := Sender as TStringGrid;
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s := sg.Cells[sg.Col, sg.Row];
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if (s <> '') and (Assigned(OnInsertCharacter)) then
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OnInsertCharacter(s);
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end;
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end;
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procedure TCharacterMapDialog.StringGridMouseDown(Sender: TObject;
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Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
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var
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Row, Col: Integer;
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sg: TStringGrid;
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begin
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sg := Sender as TStringGrid;
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if (Button = mbLeft) and (sg.MouseToGridZone(X, Y) = gzNormal) then
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begin
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Col:=0; Row:=0;
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sg.MouseToCell(X, Y, Col, Row);
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if (sg.Cells[Col, Row] <> '') and (Assigned(OnInsertCharacter)) then
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OnInsertCharacter(sg.Cells[Col, Row]);
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end;
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end;
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procedure TCharacterMapDialog.DoStatusAnsiGrid(ACol, ARow: integer);
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var
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N: integer;
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begin
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N := ACol-1 + (ARow-1)*16 + 32;
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AnsiCharInfoLabel.Caption := Format('Decimal: %s, Hex: $%s', [IntToStr(N), IntToHex(N, 2)]);
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end;
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procedure TCharacterMapDialog.AnsiGridMouseMove(Sender: TObject;
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Shift: TShiftState; X, Y: Integer);
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var
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Row, Col: Integer;
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begin
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if AnsiGrid.MouseToGridZone(X, Y) = gzNormal then
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begin
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Col:=0; Row:=0;
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AnsiGrid.MouseToCell(X, Y, Col, Row);
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DoStatusAnsiGrid(Col, Row);
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end
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else
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AnsiCharInfoLabel.Caption := '-';
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end;
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procedure TCharacterMapDialog.GridPrepareCanvas(sender: TObject; aCol,
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aRow: Integer; aState: TGridDrawState);
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var
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ts: TTextStyle;
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begin
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with (Sender as TStringGrid) do begin
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ts := Canvas.TextStyle;
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ts.Alignment := taCenter;
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Canvas.TextStyle := ts;
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end;
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end;
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procedure TCharacterMapDialog.DoStatusUnicodeGrid(ACol, ARow: integer);
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var
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S: Cardinal;
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tmp, tmp2: String;
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i: Integer;
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begin
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if not UnicodeBlockSelected then Exit;
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S:=UnicodeBlocks[FUnicodeBlockIndex].S+(ACol)+(ARow*16);
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tmp:=UnicodeToUTF8(S);
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tmp2:='';
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for i:=1 to Length(tmp) do
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tmp2:=tmp2+'$'+IntToHex(Ord(tmp[i]),2);
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UnicodeCharInfoLabel.Caption:='U+'+inttohex(S,4)+', UTF-8: '+tmp2;
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end;
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procedure TCharacterMapDialog.UnicodeGridMouseMove(Sender: TObject;
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Shift: TShiftState; X, Y: Integer);
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var
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Row, Col: Integer;
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begin
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if UnicodeGrid.MouseToGridZone(X, Y) = gzNormal then
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begin
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Col:=0; Row:=0;
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UnicodeGrid.MouseToCell(X, Y, Col, Row);
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DoStatusUnicodeGrid(Col, Row);
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end
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else
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AnsiCharInfoLabel.Caption := '-';
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end;
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procedure TCharacterMapDialog.FillAnsiGrid;
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var
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R, C, p: Integer;
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cp: String;
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begin
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cp := cbCodePage.Items[cbCodePage.ItemIndex];
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p := pos(' ', cp);
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if p > 0 then SetLength(cp, p-1);
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for R := 0 to Pred(AnsiGrid.RowCount) do
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begin
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if R <> 0 then AnsiGrid.Cells[0, R] := Format('%.3d +', [Succ(R) * 16]);
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for C := 1 to Pred(AnsiGrid.ColCount) do
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begin
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if R = 0 then AnsiGrid.Cells[C, R] := Format('%.2d', [Pred(C)])
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else
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AnsiGrid.Cells[C, R] := ConvertEncoding(Chr(Succ(R) * 16 + Pred(C)), cp, 'utf8');
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end;
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end;
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end;
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procedure TCharacterMapDialog.FillUnicodeGrid;
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var
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cnt, x, y: integer;
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S, E: integer;
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begin
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UnicodeGrid.Clear;
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if not UnicodeBlockSelected then
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Exit;
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S:=UnicodeBlocks[FUnicodeBlockIndex].S;
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E:=UnicodeBlocks[FUnicodeBlockIndex].E;
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UnicodeGrid.ColCount:=16;
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UnicodeGrid.RowCount:=RoundUp(E-S,16);
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cnt:=0;
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for y:=0 to UnicodeGrid.RowCount-1 do
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for x:=0 to UnicodeGrid.ColCount-1 do
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begin
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if S+Cnt<=E then
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UnicodeGrid.Cells[x,y]:=UnicodeToUTF8(S+Cnt);
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inc(cnt);
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end;
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UnicodeGrid.AutoSizeColumns;
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end;
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procedure TCharacterMapDialog.FillUniRangeList(ASorted: Boolean);
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var
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BlockIdx: Integer;
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begin
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cbUniRange.Items.Clear;
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cbUniRange.Sorted:=ASorted;
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for BlockIdx:=Low(UnicodeBlocks) to High(UnicodeBlocks) do
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cbUniRange.Items.Append(UnicodeBlocks[BlockIdx].PG);
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if not UnicodeBlockSelected then
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FUnicodeBlockIndex:=Low(UnicodeBlocks);
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cbUniRange.Text:=UnicodeBlocks[FUnicodeBlockIndex].PG;
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end;
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function TCharacterMapDialog.UnicodeBlockIndexByName(AName: String): Integer;
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var
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BlockIdx: Integer;
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begin
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for BlockIdx:=Low(UnicodeBlocks) to High(UnicodeBlocks) do
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if UnicodeBlocks[BlockIdx].PG=AName then
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Exit(BlockIdx);
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Result:=NOT_SELECTED;
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end;
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function TCharacterMapDialog.UnicodeBlockSelected: Boolean;
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begin
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Result:=(FUnicodeBlockIndex>=Low(UnicodeBlocks)) and (FUnicodeBlockIndex<=High(UnicodeBlocks));
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end;
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end.
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