mirror of
https://github.com/moparisthebest/Simba
synced 2024-11-22 09:12:19 -05:00
582 lines
14 KiB
ObjectPascal
582 lines
14 KiB
ObjectPascal
unit v_AutoCompleteForm;
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interface
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uses
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Classes, SysUtils, Forms, Controls, Graphics, Dialogs,
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StdCtrls, ExtCtrls,
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{$IFDEF FPC}
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LMessages,
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lcltype
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{$ELSE}
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Windows,
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Messages
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{$ENDIF};
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type
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TInsertProc = procedure(Str: string) of object;
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TAutoCompleteListBox = class(TListBox)
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protected
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fIndexList: array of Integer;
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fList: TStrings;
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fInsertList: TStrings;
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fFilter: string;
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procedure setItemList(List: TStrings);
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procedure setInsertList(List: TStrings);
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procedure setFilter(Filter: string);
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procedure DblClick; override;
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procedure DrawItem(Index: Integer; ARect: TRect; State: TOwnerDrawState); override;
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{$IFDEF FPC}
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procedure WMEraseBkgnd(var message: TLMEraseBkgnd); message LM_ERASEBKGND;
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procedure WMVScroll(var message: TLMVScroll); message LM_VSCROLL;
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procedure CNChar(var message: TLMessage); message CN_CHAR;
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{$ELSE}
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procedure WMEraseBkgnd(var message: TWMEraseBkgnd); message WM_ERASEBKGND;
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procedure WMVScroll(var message: TWMVScroll); message WM_VSCROLL;
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procedure CNChar(var message: TMessage); message CN_CHAR;
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{$ENDIF}
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public
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ColumnSizes: array of Integer;
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Redirect: TWinControl;
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InsertProc: TInsertProc;
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procedure setLists(ItemList, InsertList: TStrings);
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function getInsert: string;
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constructor Create(TheOwner: TComponent); override;
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destructor Destroy; override;
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published
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property ItemList: TStrings read fList write setItemList;
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property InsertList: TStrings read fInsertList write setInsertList;
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property Filter: string read fFilter write setFilter;
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end;
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TAutoCompletePopup = class(TForm)
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protected
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l: TAutoCompleteListBox;
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procedure DoShow; override;
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function getRedirect: TWinControl;
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procedure setRedirect(Control: TWinControl);
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function getInsertProc: TInsertProc;
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procedure setInsertProc(Proc: TInsertProc);
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public
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constructor Create(TheOwner: TComponent); override;
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procedure Show(Pos: TPoint; ItemList, InsertList: TStrings; Filter: string = ''; Editor: TWinControl = nil); reintroduce;
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procedure DoHide; override;
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procedure HandleKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
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procedure HandleKeyPress(Sender: TObject; var Key: char);
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published
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property ListBox: TAutoCompleteListBox read l;
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property Redirect: TWinControl read getRedirect write setRedirect;
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property InsertProc: TInsertProc read getInsertProc write setInsertProc;
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end;
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TParamHint = class(THintWindow)
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public
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constructor Create(TheOwner: TComponent); override;
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procedure Paint; override;
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end;
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implementation
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uses
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StrUtils {$IFDEF FPC}, lclintf{$ENDIF}, Themes;
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procedure TAutoCompleteListBox.setItemList(List: TStrings);
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begin
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fList.Assign(List);
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end;
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procedure TAutoCompleteListBox.setInsertList(List: TStrings);
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begin
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fInsertList.Assign(List);
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end;
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procedure TAutoCompleteListBox.setLists(ItemList, InsertList: TStrings);
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var
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i: Integer;
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begin
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//fList.Assign(ItemList);
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//fInsertList.Assign(InsertList);
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{$IFDEF FPC}LockSelectionChange;{$ENDIF}
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fList.BeginUpdate;
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try
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fList.Clear;
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fList.AddStrings(ItemList);
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finally
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fList.EndUpdate;
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end;
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fInsertList.BeginUpdate;
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try
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fInsertList.Clear;
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fInsertList.AddStrings(InsertList);
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finally
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fInsertList.EndUpdate;
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end;
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Items.BeginUpdate;
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try
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Items.Clear;
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Items.AddStrings(ItemList);
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finally
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Items.EndUpdate;
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end;
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fFilter := '';
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SetLength(fIndexList, fList.Count);
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for i := 0 to fList.Count - 1 do
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fIndexList[i] := i;
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if (fList.Count > 0) then
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ItemIndex := 0
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else
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ItemIndex := -1;
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{$IFDEF FPC}UnlockSelectionChange;{$ENDIF}
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end;
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procedure TAutoCompleteListBox.setFilter(Filter: string);
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var
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i, c, l, del: Integer;
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begin
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Filter := LowerCase(Filter);
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if (Filter = fFilter) then
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Exit;
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{$IFDEF FPC}LockSelectionChange;{$ENDIF}
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c := 0;
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if (LeftStr(Filter, Length(fFilter)) = fFilter) then
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begin
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fFilter := Filter;
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Items.BeginUpdate;
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try
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l := Length(fFilter);
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del := 0;
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for i := 0 to Items.Count - 1 do
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if (LowerCase(LeftStr(fInsertList[fIndexList[i]], l)) <> fFilter) then
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begin
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Items.Delete(i - del);
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Inc(del);
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end
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else
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begin
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if (ItemIndex = i) or (LowerCase(fInsertList[fIndexList[i]]) = fFilter) then
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ItemIndex := c;
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fIndexList[c] := fIndexList[i];
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Inc(c);
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end;
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SetLength(fIndexList, c + 1);
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finally
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Items.EndUpdate;
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end;
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end
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else
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begin
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fFilter := Filter;
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Items.BeginUpdate;
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try
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Items.Clear;
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l := Length(fFilter);
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SetLength(fIndexList, fInsertList.Count);
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for i := 0 to fInsertList.Count - 1 do
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if (LowerCase(LeftStr(fInsertList[i], l)) = fFilter) then
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begin
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Items.Append(fList[i]);
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if (LowerCase(fInsertList[i]) = fFilter) then
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ItemIndex := i;
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fIndexList[c] := i;
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Inc(c);
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end;
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SetLength(fIndexList, c + 1);
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finally
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Items.EndUpdate;
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end;
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end;
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{$IFDEF FPC}UnlockSelectionChange;{$ENDIF}
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end;
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function TAutoCompleteListBox.getInsert: string;
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begin
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if (ItemIndex < 0) or (ItemIndex > Length(fIndexList)) then
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Result := ''
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else
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Result := fInsertList[fIndexList[ItemIndex]];
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end;
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{$IFDEF FPC}
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procedure TAutoCompleteListBox.WMEraseBkgnd(var message: TLMEraseBkgnd);
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{$ELSE}
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procedure TAutoCompleteListBox.WMEraseBkgnd(var message: TWMEraseBkgnd);
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{$ENDIF}
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begin
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if (Count < Round(Height / ItemHeight)) then
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begin
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Canvas.Brush.Color := clYellow;
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FillRect(message.DC, Rect(0, Count * ItemHeight, Width, Height), HBRUSH({$IFDEF FPC}Brush.Reference.Handle{$ELSE}Parent.Brush.Handle{$ENDIF}));
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end;
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message.Result := 1;
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end;
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{$IFDEF FPC}
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procedure TAutoCompleteListBox.WMVScroll(var message: TLMVScroll);
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{$ELSE}
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procedure TAutoCompleteListBox.WMVScroll(var message: TWMVScroll);
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{$ENDIF}
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var
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c: Integer;
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begin
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{$IFDEF FPC}LockSelectionChange;{$ENDIF}
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if (ItemIndex < TopIndex) then
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ItemIndex := TopIndex
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else
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begin
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c := Round(Height / ItemHeight) - 1;
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if (ItemIndex > TopIndex + c) then
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ItemIndex := TopIndex + c;
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end;
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{$IFDEF FPC}UnlockSelectionChange;{$ENDIF}
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end;
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{$IFDEF FPC}
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procedure TAutoCompleteListBox.CNChar(var message: TLMessage);
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{$ELSE}
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procedure TAutoCompleteListBox.CNChar(var message: TMessage);
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{$ENDIF}
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begin
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inherited;
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{$IFDEF FPC}
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if (message.Result = 0) and (Redirect <> nil) and (TLMChar(message).CharCode <> VK_DOWN) and (TLMChar(message).CharCode <> VK_UP) and (TLMChar(message).CharCode <> VK_RETURN) then
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{$ELSE}
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if (message.Result = 0) and (Redirect <> nil) and (TWMChar(message).CharCode <> VK_DOWN) and (TWMChar(message).CharCode <> VK_UP) and (TWMChar(message).CharCode <> VK_RETURN) then
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{$ENDIF}
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begin
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Redirect.SetFocus;
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Application.ProcessMessages;
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SendMessage(Redirect.Handle, CN_Char, message.wParam, message.lParam);
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end;
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end;
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procedure TAutoCompleteListBox.DblClick;
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begin
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if (Assigned(InsertProc)) then
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InsertProc(GetInsert);
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if (Owner is TForm) then
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TForm(Owner).Hide;
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end;
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procedure TAutoCompleteListBox.DrawItem(Index: Integer; ARect: TRect; State: TOwnerDrawState);
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var
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p1, p2, p3, tl, col: Integer;
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s, c: string;
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begin
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if (ItemIndex = -1) and (Count > 0) then
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begin
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{$IFDEF FPC}LockSelectionChange;{$ENDIF}
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ItemIndex := TopIndex;
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{$IFDEF FPC}UnlockSelectionChange;{$ENDIF}
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end;
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if {$IFDEF FPC}(odPainted in State) or{$ENDIF} (not Visible) or (ARect.Left > ClientRect.Right) or (ARect.Top > ClientRect.Bottom) or (Index < 0) or (Index >= Items.Count) then
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Exit;
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tl := ARect.Left;
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col := 0;
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with Canvas do
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begin
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Font.Style := [];
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Font.Color := clBlack;
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if (odSelected in State) then
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Brush.Color := clHighlight
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else if (odHotLight in State) then
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Brush.Color := clHotLight
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else if Odd(Index) then
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Brush.Color := $F0F0F0
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else
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Brush.Color := clWhite;
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FillRect(ARect);
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s := Items[Index];
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p1 := Pos('{', s);
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p3 := 1;
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while (p1 > 0) do
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begin
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p2 := PosEx('}', s, p1 + 1);
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if (p2 > 0) then
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begin
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if (s[p2 - 1] <> '\') then
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begin
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c := Copy(s, p3, p1 - p3);
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TextOut(tl, ARect.Top + Round((ItemHeight - TextHeight(c) + 0.001) / 2) , c);
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tl := tl + TextWidth(c) + 1;
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p3 := p2 + 1;
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if ((p2 - p1 - 2) > 0) then
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begin
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c := LowerCase(Copy(s, p1 + 2, p2 - p1 - 2));
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case Char(CharUpper({$IFNDEF FPC}PChar{$ELSE}Char{$ENDIF}(s[p1 + 1]))) of
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'#', 'C': Font.Color := StringToColor(c);
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'B':
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if (c = '+') then
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Font.Style := Font.Style + [fsBold]
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else
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Font.Style := Font.Style - [fsBold];
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'I':
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if (c = '+') then
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Font.Style := Font.Style + [fsItalic]
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else
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Font.Style := Font.Style - [fsItalic];
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'U':
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if (c = '+') then
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Font.Style := Font.Style + [fsUnderline]
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else
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Font.Style := Font.Style - [fsUnderline];
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end;
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end
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else if (s[p1 + 1] = '|') then
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begin
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if (ColumnSizes[col] = -1) then
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ColumnSizes[col] := Canvas.TextWidth('constructor') + 5;
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tl := ColumnSizes[col];
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Inc(Col);
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end;
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p1 := PosEx('{', s, p2 + 1);
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end;
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end
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else
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Break;
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end;
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if ((Length(s) - p3 + 1) > 0) then
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begin
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c := Copy(s, p3, Length(s) - p3 + 1);
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TextOut(tl, ARect.Top + Round((ItemHeight - TextHeight(c) + 0.001) / 2), c);
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end;
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end;
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end;
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constructor TAutoCompleteListBox.Create(TheOwner: TComponent);
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begin
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inherited;
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DoubleBuffered := True;
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ControlStyle := ControlStyle + [csOpaque];
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BorderStyle := bsNone;
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Style := lbOwnerDrawFixed;
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IntegralHeight := True;
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{$IFDEF FPC}
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ItemHeight := CalculateStandardItemHeight + 4;
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{$ELSE}
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ItemHeight := 19;
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{$ENDIF}
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Constraints.MinHeight := ItemHeight;
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SetLength(ColumnSizes, 1);
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ColumnSizes[0] := -1;
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Redirect := nil;
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InsertProc := nil;
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Items.Clear;
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fList := TStringList .Create;
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fInsertList := TStringList.Create;
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fFilter := '';
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end;
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destructor TAutoCompleteListBox.Destroy;
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begin
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FreeAndNil(fList);
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FreeAndNil(fInsertList);
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inherited;
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end;
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procedure TAutoCompletePopup.DoShow;
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begin
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//ClientHeight := Max(Min(Round(ClientHeight / l.ItemHeight), l.Count), 1) * l.ItemHeight;
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//ClientHeight := Max(Round(ClientHeight / l.ItemHeight), 1) * l.ItemHeight;
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end;
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function TAutoCompletePopup.getRedirect: TWinControl;
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begin
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Result := ListBox.Redirect;
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end;
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procedure TAutoCompletePopup.setRedirect(Control: TWinControl);
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begin
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ListBox.Redirect := Control;
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end;
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function TAutoCompletePopup.getInsertProc: TInsertProc;
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begin
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Result := ListBox.InsertProc;
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end;
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procedure TAutoCompletePopup.setInsertProc(Proc: TInsertProc);
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begin
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ListBox.InsertProc := Proc;
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end;
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constructor TAutoCompletePopup.Create(TheOwner: TComponent);
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begin
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inherited;
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l := TAutoCompleteListBox.Create(Self);
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with l do
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begin
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Parent := Self;
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Align := alClient;
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OnKeyDown := {$IFDEF FPC}@{$ENDIF}HandleKeyDown;
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OnKeyPress := {$IFDEF FPC}@{$ENDIF}HandleKeyPress;
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end;
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DefaultMonitor := dmMainForm;
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FormStyle := fsStayOnTop;
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{$IFDEF FPC}
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ShowInTaskBar := stNever;
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{$ENDIF}
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BorderStyle := bsSizeToolWin;
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BorderIcons := [];
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SetWindowLong(Handle, GWL_STYLE, GetWindowLong(Handle, GWL_STYLE) and (not WS_CAPTION) or WS_BORDER);
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Height := Height - GetSystemMetrics(SM_CYCAPTION);
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DoubleBuffered := True;
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ControlStyle := ControlStyle + [csOpaque];
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ClientHeight := Round(ClientHeight / l.ItemHeight) * l.ItemHeight;
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Constraints.MinHeight := l.ItemHeight;
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Constraints.MinWidth := 100;
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end;
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procedure TAutoCompletePopup.DoHide;
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begin
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ListBox.Clear;
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inherited;
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end;
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procedure TAutoCompletePopup.HandleKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
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begin
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if Visible then
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begin
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case Key of
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VK_UP:
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if (ListBox.Count > 0) and (ListBox.ItemIndex > 0) then
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ListBox.ItemIndex := ListBox.ItemIndex - 1;
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VK_DOWN:
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if (ListBox.Count > 0) and (ListBox.ItemIndex + 1 < ListBox.Count) then
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ListBox.ItemIndex := ListBox.ItemIndex + 1;
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VK_RETURN:
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ListBox.DblClick;
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VK_ESCAPE:
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Hide;
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else
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Exit;
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end;
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Key := 0;
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end;
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end;
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procedure TAutoCompletePopup.HandleKeyPress(Sender: TObject; var Key: char);
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begin
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if Visible and (not (Key in ['a'..'z', 'A'..'Z', '0'..'9', '_'])) then
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if (Key in ['.', '(', '[', ';', ':']) then
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ListBox.DblClick
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else
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Hide;
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end;
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procedure TAutoCompletePopup.Show(Pos: TPoint; ItemList, InsertList: TStrings; Filter: string = ''; Editor: TWinControl = nil);
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begin
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ListBox.setLists(ItemList, InsertList);
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ListBox.Redirect := Editor;
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ListBox.Filter := Filter;
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Left := Pos.x;
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Top := Pos.y;
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inherited Show;
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if (Editor <> nil) then
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Editor.SetFocus;
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end;
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constructor TParamHint.Create(TheOwner: TComponent);
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begin
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inherited;
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{$IFDEF FPC}
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AutoHide := False;
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{$ENDIF}
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end;
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procedure TParamHint.Paint;
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function GetDrawTextFlags: Cardinal;
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var
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EffectiveAlignment: TAlignment;
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begin
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Result := DT_NOPREFIX or DT_VCENTER or DT_WORDBREAK;
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EffectiveAlignment := Alignment;
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if BiDiMode <> bdLeftToRight then
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begin
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Result := Result or DT_RTLREADING;
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//change alignment if is RTL
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if BiDiMode = bdRightToLeft then
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begin
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case Alignment of
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taLeftJustify: EffectiveAlignment := taRightJustify;
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taRightJustify: EffectiveAlignment := taLeftJustify;
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end;
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end;
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end;
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case EffectiveAlignment of
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taLeftJustify: Result := Result or DT_LEFT;
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taCenter: Result := Result or DT_CENTER;
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taRightJustify: Result := Result or DT_RIGHT;
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end;
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end;
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var
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ARect: TRect;
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Details: TThemedElementDetails;
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begin
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ARect := ClientRect;
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if Color = clInfoBk then // draw using themes
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begin
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Details := ThemeServices.GetElementDetails(tttStandardLink);
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ThemeServices.DrawElement(Canvas.Handle, Details, ARect);
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end
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else
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begin
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Canvas.Brush.Color := Color;
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Canvas.Pen.Width := 1;
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Canvas.FillRect(ARect);
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DrawEdge(Canvas.Handle, ARect, BDR_RAISEDOUTER, BF_RECT);
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end;
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InflateRect(ARect, - 4, - 4);
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Canvas.TextOut(ARect.Left, ARect.Top, Caption);
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|
end;
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|
|
|
end.
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|