Componentes.Terceros.jvcl/official/3.39/run/JvStringGrid.pas
2010-01-18 16:55:50 +00:00

1342 lines
39 KiB
ObjectPascal

{-----------------------------------------------------------------------------
The contents of this file are subject to the Mozilla Public License
Version 1.1 (the "License"); you may not use this file except in compliance
with the License. You may obtain A copy of the License at
http://www.mozilla.org/MPL/MPL-1.1.html
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
the specific language governing rights and limitations under the License.
The Original Code is: JvStringGrid.PAS, released on 2001-02-28.
The Initial Developer of the Original Code is Sebastien Buysse [sbuysse att buypin dott com]
Portions created by Sebastien Buysse are Copyright (C) 2001 S?stien Buysse.
All Rights Reserved.
Contributor(s): Michael Beck [mbeck att bigfoot dott com].
You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
located at http://jvcl.delphi-jedi.org
Known Issues:
-----------------------------------------------------------------------------}
// $Id: JvStringGrid.pas 12461 2009-08-14 17:21:33Z obones $
unit JvStringGrid;
{$I jvcl.inc}
//---------------------------------------------------------------
// The inplace-edit-list feature is enabled dynamically when
// compiling JVCL, if the underlying JVCL and VCL base classes
// support it.
//---------------------------------------------------------------
interface
uses
{$IFDEF UNITVERSIONING}
JclUnitVersioning,
{$ENDIF UNITVERSIONING}
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Grids, StdCtrls,
JvTypes, JvJCLUtils, JvExGrids;
const
GM_ACTIVATECELL = WM_USER + 123;
type
// (rom) renamed elements made packed
TGMActivateCell = packed record
Msg: Cardinal;
Column: Integer;
Row: Integer;
Result: Integer;
end;
TJvStringGrid = class;
TExitCellEvent = procedure(Sender: TJvStringGrid; AColumn, ARow: Integer;
const EditText: string) of object;
TGetCellAlignmentEvent = procedure(Sender: TJvStringGrid; AColumn, ARow: Integer;
State: TGridDrawState; var CellAlignment: TAlignment) of object;
TCaptionClickEvent = procedure(Sender: TJvStringGrid; AColumn, ARow: Integer) of object;
TEditShowEvent = procedure(Sender: TJvStringGrid; ACol, ARow: Longint;
var AllowEdit: Boolean) of object;
TJvSortType = (stNone, stAutomatic, stClassic, stCaseSensitive, stNumeric, stDate, stCurrency);
TProgress = procedure(Sender: TObject; Progression, Total: Integer) of object;
TJvOnGetEditStyleEvent = procedure(Sender: TJvStringGrid; AColumn, ARow: Integer; PickListStrings: TStrings; var EditStyle: TEditStyle) of object;
TJvStringGrid = class(TJvExStringGrid)
private
FAlignment: TAlignment;
FSetCanvasProperties: TDrawCellEvent;
FGetCellAlignment: TGetCellAlignmentEvent;
FOnColWidthsChanged: TNotifyEvent;
FCaptionClick: TCaptionClickEvent;
FCellOnMouseDown: TGridCoord;
FOnExitCell: TExitCellEvent;
FOnLoadProgress: TProgress;
FOnSaveProgress: TProgress;
FOnHorizontalScroll: TNotifyEvent;
FOnVerticalScroll: TNotifyEvent;
FOnShowEditor: TEditShowEvent;
FCustomInplaceEditStyle: TEditStyle; // NEW
FOnGetEditStyle: TJvOnGetEditStyleEvent;
FPickListStrings: TStringList;
FOnEditButtonClick: TNotifyEvent;
FOnListBoxCloseUp: TNotifyEvent;
FFixedFont: TFont;
procedure SetAlignment(const Value: TAlignment);
procedure GMActivateCell(var Msg: TGMActivateCell); message GM_ACTIVATECELL;
procedure WMCommand(var Msg: TWMCommand); message WM_COMMAND;
procedure SetFixedFont(const Value: TFont);
procedure DoFixedFontChange(Sender: TObject);
procedure EditButtonClick(Sender: TObject); dynamic; // NEW-WP
procedure ListBoxCloseUp(Sender: TObject); dynamic;
protected
function CreateEditor: TInplaceEdit; override;
function CanEditShow: Boolean; override;
procedure ColWidthsChanged; override;
procedure MouseDown(Button: TMouseButton; Shift: TShiftState;
X, Y: Integer); override;
procedure MouseUp(Button: TMouseButton; Shift: TShiftState;
X, Y: Integer); override;
procedure ExitCell(const EditText: string; AColumn, ARow: Integer); virtual;
procedure SetCanvasProperties(AColumn, ARow: Longint;
Rect: TRect; State: TGridDrawState); virtual;
procedure DrawCell(AColumn, ARow: Longint;
Rect: TRect; State: TGridDrawState); override;
// NEW: Override to provide dropdown list editing as an
// event-handler in TJvStringGrid.
function GetEditStyle(ACol, ARow: Longint): TEditStyle; override;
procedure CaptionClick(AColumn, ARow: Longint); dynamic;
procedure WMHScroll(var Msg: TWMHScroll); message WM_HSCROLL;
procedure WMVScroll(var Msg: TWMVScroll); message WM_VSCROLL;
procedure DoLoadProgress(Position, Count: Integer);
procedure DoSaveProgress(Position, Count: Integer);
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function GetCellAlignment(AColumn, ARow: Longint;
State: TGridDrawState): TAlignment; virtual;
procedure DefaultDrawCell(AColumn, ARow: Longint;
Rect: TRect; State: TGridDrawState); virtual;
procedure ActivateCell(AColumn, ARow: Integer);
// protected => public
procedure InvalidateCell(AColumn, ARow: Integer);
procedure InvalidateCol(AColumn: Integer);
procedure InvalidateRow(ARow: Integer);
procedure MoveColumn(FromIndex, ToIndex: Integer);
procedure MoveRow(FromIndex, ToIndex: Longint);
property InplaceEditor;
// Calculates and sets the width of a specific column or all columns if Index < 0
// based on the text in the affected Cells.
// MinWidth is the minimum width of the column(s). If MinWidth is < 0,
// DefaultColWidth is used instead
procedure AutoSizeCol(Index, MinWidth: Integer);
// Inserts a new row at the specified Index and moves all existing rows >= Index down one step
// Returns the inserted row as an empty TStrings
function InsertRow(Index: Integer): TStrings;
// Inserts a new column at the specified Index and moves all existing columns >= Index to the right
// Returns the inserted column as an empty TStrings
function InsertCol(Index: Integer): TStrings;
// Removes the row at Index and moves all rows > Index up one step
procedure RemoveRow(Index: Integer);
// Removes the column at Index and moves all cols > Index to the left
procedure RemoveCol(Index: Integer);
// Hides the row at Index by setting it's height = -1
// Calling this method repeatedly does nothing (the row retains it's Index even if it's hidden)
procedure HideRow(Index: Integer);
// Shows the row at Index by setting it's height to AHeight
// if AHeight <= 0, DefaultRowHeight is used instead
procedure ShowRow(Index, AHeight: Integer);
// Hides the column at Index by setting it's ColWidth = -1
// Calling this method repeatedly does nothing (the column retains it's Index even if it's hidden)
procedure HideCol(Index: Integer);
// Returns True if the Cell at ACol/ARow is hidden, i.e if it's RowHeight or ColWidth < 0
function IsHidden(ACol, ARow: Integer): Boolean;
// Shows the column at Index by setting it's width to AWidth
// If AWidth <= 0, DefaultColWidth is used instead
procedure ShowCol(Index, AWidth: Integer);
// HideCell hides a cell by hiding the row and column that it belongs to.
// This means that both a row and a column is hidden
procedure HideCell(ACol, ARow: Integer);
// ShowCell shows a previously hidden cell by showing it's corresponding row and column and
// using AWidth/AHeight to set it's size. If AWidth < 0, DefaultColWidth is used instead.
// If AHeight < 0, DefaultRowHeight is used instead. If one dimension of the Cell wasn't
// hidden, nothing happens to that dimension (i.e if ColWidth < 0 but RowHeight := 24, only ColWidth is
// changed to AWidth
procedure ShowCell(ACol, ARow, AWidth, AHeight: Integer);
// Hides all rows and columns
procedure HideAll;
// Shows all hidden rows and columns, setting their width/height to AWidth/AHeight as necessary
// If AWidth < 0, DefaultColWidth is used. If AHeight < 0, DefaultRowHeight is used
procedure ShowAll(AWidth, AHeight: Integer);
// Removes the content in the Cells but does not remove any rows or columns
procedure Clear;
// Clears selection rectangle!
procedure ClearSelection;
procedure SortGrid(Column: Integer; Ascending: Boolean = True; Fixed: Boolean = False;
SortType: TJvSortType = stClassic; BlankTop: Boolean = True);
// Sort grid using the column indices in ColOrder. For example if ColOrder contains
// [1, 3, 0, 2], column 3 is used when the items in column 1 are identical
procedure SortGridByCols(ColOrder: array of Integer; Fixed: Boolean = False);
procedure SaveToFile(const FileName: string {$IFDEF UNICODE}; Encoding: TEncoding = nil{$ENDIF});
procedure LoadFromFile(const FileName: string {$IFDEF UNICODE}; Encoding: TEncoding = nil{$ENDIF});
procedure LoadFromCSV(const FileName: string; Separator: Char = ';'; QuoteChar: Char = '"'; StripQuotes: Boolean = True);
procedure SaveToCSV(const FileName: string; Separator: Char = ';'; QuoteChar: Char = '"');
procedure LoadFromStream(Stream: TStream {$IFDEF UNICODE}; Encoding: TEncoding = nil{$ENDIF});
procedure SaveToStream(Stream: TStream {$IFDEF UNICODE}; Encoding: TEncoding = nil{$ENDIF});
published
property HintColor;
property Alignment: TAlignment read FAlignment write SetAlignment;
property FixedFont: TFont read FFixedFont write SetFixedFont;
property OnExitCell: TExitCellEvent read FOnExitCell write FOnExitCell;
property OnSetCanvasProperties: TDrawCellEvent read FSetCanvasProperties write FSetCanvasProperties;
property OnGetCellAlignment: TGetCellAlignmentEvent read FGetCellAlignment write FGetCellAlignment;
property OnCaptionClick: TCaptionClickEvent read FCaptionClick write FCaptionClick;
property OnColWidthsChanged: TNotifyEvent read FOnColWidthsChanged write FOnColWidthsChanged;
property OnMouseEnter;
property OnMouseLeave;
property OnParentColorChange;
property OnLoadProgress: TProgress read FOnLoadProgress write FOnLoadProgress;
property OnSaveProgress: TProgress read FOnSaveProgress write FOnSaveProgress;
property OnVerticalScroll: TNotifyEvent read FOnVerticalScroll write FOnVerticalScroll;
property OnHorizontalScroll: TNotifyEvent read FOnHorizontalScroll write FOnHorizontalScroll;
property OnShowEditor: TEditShowEvent read FOnShowEditor write FOnShowEditor;
property OnGetEditStyle: TJvOnGetEditStyleEvent read FOnGetEditStyle write FOnGetEditStyle; // NEW -WP (D6 UP)
property OnEditButtonClick: TNotifyEvent read FOnEditButtonClick write FOnEditButtonClick; // NEW-WP - User clicks on Ellipsis button, get event fired!
property OnListBoxCloseUp: TNotifyEvent read FOnListBoxCloseUp write FOnListBoxCloseUp; // Listbox close up.
end;
{$IFDEF UNITVERSIONING}
const
UnitVersioning: TUnitVersionInfo = (
RCSfile: '$URL: https://jvcl.svn.sourceforge.net/svnroot/jvcl/tags/JVCL3_39/run/JvStringGrid.pas $';
Revision: '$Revision: 12461 $';
Date: '$Date: 2009-08-14 19:21:33 +0200 (ven., 14 août 2009) $';
LogPath: 'JVCL\run'
);
{$ENDIF UNITVERSIONING}
implementation
uses
Math,
JclBase, // TBytes for Pre-Delphi 2007
JvJVCLUtils;
//=== { TExInplaceEditList } =================================================
// If the feature exists in the VCL base classes, we can enable the
// feature here.
type
TExInplaceEditList = class(TJvExPubInplaceEditList) // was inheriting from TJvExInplaceEdit.-WAP
private
// Important: Style of this inplace editor is set in TInplaceEditList
// FEditStyle - inherited - See VCL Source: ($delphi)\Source\vcl\Grids.pas
//FActiveList : TWinControl; // WP-New: Listbox control stuff
//FPickListLoaded: Boolean; // WP-New
//FPickList : TCustomListbox; // WP-New
//FListVisible : Boolean; // WP-New
FLastCol: Integer;
FLastRow: Integer;
protected
procedure CloseUp(Accept: Boolean); override; // fire event on close up!
procedure DoEditButtonClick; override;
procedure UpdateContents; override; //WP-New! - Put items into listbox!
procedure FocusKilled(NextWnd: THandle); override;
procedure FocusSet(PrevWnd: THandle); override;
public
constructor Create(Owner: TComponent); override;//WP-New!
//property ActiveList: TWinControl read FActiveList write FActiveList;//WP-New!
procedure CreateParams(var Params: TCreateParams); override;
end;
constructor TExInplaceEditList.Create(Owner: TComponent);
begin
inherited Create(Owner);
// todo: tweakage!
end;
//NEW!
procedure TExInplaceEditList.UpdateContents;
var
OwnerGrid: TJvStringGrid;
begin
inherited UpdateContents;
if EditStyle = esPickList then
begin
ActiveList := PickList;
// Populate the listbox:
Assert(Assigned(Grid));
OwnerGrid := (Grid as TJvStringGrid);
PickList.Items.Assign(OwnerGrid.FPickListStrings);
end;
end;
procedure TExInplaceEditList.CreateParams(var Params: TCreateParams);
const
Flags: array [TAlignment] of DWORD = (ES_LEFT, ES_RIGHT, ES_CENTER);
begin
inherited CreateParams(Params);
Params.Style := Params.Style or Flags[TJvStringGrid(Grid).Alignment];
end;
procedure TExInplaceEditList.FocusKilled(NextWnd: THandle);
begin
TJvStringGrid(Grid).ExitCell(Text, FLastCol, FLastRow);
inherited FocusKilled(NextWnd);
end;
procedure TExInplaceEditList.FocusSet(PrevWnd: THandle);
begin
FLastCol := TJvStringGrid(Grid).Col;
FLastRow := TJvStringGrid(Grid).Row;
inherited FocusSet(PrevWnd);
end;
procedure TExInplaceEditList.CloseUp(Accept: Boolean); //override; // fire event on close up!
begin
inherited CloseUp(Accept);
if Assigned(Grid) then
TJvStringGrid(Grid).ListBoxCloseUp(Self);
end;
procedure TExInplaceEditList.DoEditButtonClick;
begin
if Assigned(Grid) then
TJvStringGrid(Grid).EditButtonClick(Self);
end;
//=== { TJvStringGrid } ======================================================
constructor TJvStringGrid.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FFixedFont := TFont.Create;
FFixedFont.Assign(Font);
FFixedFont.OnChange := DoFixedFontChange;
// ControlStyle := ControlStyle + [csAcceptsControls];
FPickListStrings := TStringList.Create; //NEW -WP
end;
destructor TJvStringGrid.Destroy;
begin
FreeAndNil(FFixedFont);
FreeAndNil(FPickListStrings); //NEW-WP
inherited Destroy;
end;
function TJvStringGrid.CanEditShow: Boolean;
begin
Result := inherited CanEditShow;
if Result and Assigned(FOnShowEditor) then
begin
FOnShowEditor(Self, Col, Row, Result);
if not Result then
EditorMode := False;
end;
end;
procedure TJvStringGrid.ColWidthsChanged;
begin
inherited;
if Assigned(FOnColWidthsChanged) then
FOnColWidthsChanged(Self);
end;
procedure TJvStringGrid.SortGrid(Column: Integer;
Ascending, Fixed: Boolean; SortType: TJvSortType; BlankTop: Boolean);
const
cFloatDelta = 0.01;
var
St: string;
TmpC: Currency;
TmpF: Extended;
TmpD: TDateTime;
LStart: Integer;
LEnd: Integer;
procedure ExchangeGridRows(I, J: Integer);
var
K: Integer;
begin
if Fixed then
for K := 0 to ColCount - 1 do
Cols[K].Exchange(I, J)
else
for K := FixedCols to ColCount - 1 do
Cols[K].Exchange(I, J);
end;
function IsSmaller(First, Second: string): Boolean;
function DetectType(const S1, S2: string): TJvSortType;
var
ExtValue: Extended;
CurrValue: Currency;
DateValue: TDateTime;
begin
if TextToFloat(PChar(S1), ExtValue, fvExtended) and TextToFloat(PChar(S2), ExtValue, fvExtended) then
Result := stNumeric
else
if TextToFloat(PChar(S1), CurrValue, fvCurrency) and TextToFloat(PChar(S2), CurrValue, fvCurrency) then
Result := stCurrency
else
if TryStrToDateTime(S1, DateValue) and TryStrToDateTime(S2, DateValue) then
Result := stDate
else
Result := stClassic;
end;
begin
case DetectType(First, Second) of
stNumeric:
Result := StrToFloat(First) < StrToFloat(Second);
stCurrency:
Result := StrToCurr(First) < StrToCurr(Second);
stDate:
Result := StrToDateTime(First) < StrToDateTime(Second);
stClassic:
Result := AnsiCompareText(First, Second) < 0;
else
Result := First > Second;
end;
end;
function IsBigger(First, Second: string): Boolean;
begin
Result := IsSmaller(Second, First);
end;
// (rom) A HeapSort has no worst case for O(X)
// (rom) I donated one a long time ago to JCL
// (p3) maybe implemented a secondary sort index when items are equal?
// (p3) ...or use another stable sort method, like heapsort
procedure QuickSort(L, R: Integer);
var
I, J, m: Integer;
begin
repeat
I := L;
J := R;
m := (L + R) div 2;
St := Cells[Column, m];
repeat
case SortType of
stClassic:
begin
while AnsiCompareText(Cells[Column, I], St) < 0 do
Inc(I);
while AnsiCompareText(Cells[Column, J], St) > 0 do
Dec(J);
end;
stCaseSensitive:
begin
while AnsiCompareStr(Cells[Column, I], St) < 0 do
Inc(I);
while AnsiCompareStr(Cells[Column, J], St) > 0 do
Dec(J);
end;
stNumeric:
begin
TmpF := JvSafeStrToFloatDef(St, 0); // formerly StrToFloatDefIgnoreInvalidCharacters
while JvSafeStrToFloatDef(Cells[Column, I], 0) < TmpF do
Inc(I);
while JvSafeStrToFloatDef(Cells[Column, J], 0) > TmpF do
Dec(J);
end;
stDate:
begin
TmpD := StrToDateTimeDef(St, 0);
while StrToDateTimeDef(Cells[Column, I], 0) < TmpD do
Inc(I);
while StrToDateTimeDef(Cells[Column, J], 0) > TmpD do
Dec(J);
end;
stCurrency:
begin
TmpC := StrToCurrDef(St, 0);
while StrToCurrDef(Cells[Column, I], 0) < TmpC do
Inc(I);
while StrToCurrDef(Cells[Column, J], 0) > TmpC do
Dec(J);
end;
stAutomatic:
begin
while IsSmaller(Cells[Column, I], St) do
Inc(I);
while IsBigger(Cells[Column, J], St) do
Dec(J);
end;
end;
if I <= J then
begin
if I <> J then
ExchangeGridRows(I, J);
Inc(I);
Dec(J);
end;
until (I > J);
if L < J then
QuickSort(L, J);
L := I;
until I >= R;
end;
procedure InvertGrid;
var
I, J: Integer;
begin
I := FixedRows;
J := RowCount - 1;
while I < J do
begin
ExchangeGridRows(I, J);
Inc(I);
Dec(J);
end;
end;
function MoveBlankTop: Integer;
var
I, J: Integer;
begin
I := FixedRows;
Result := I;
J := RowCount - 1;
while I <= J do
begin
if Trim(Cells[Column, I]) = '' then
begin
ExchangeGridRows(Result, I);
Inc(Result);
end;
Inc(I);
end;
end;
procedure MoveBlankBottom;
var
I, J: Integer;
DoSort: Boolean;
begin
I := FixedRows;
DoSort := False;
// avoid empty columns
for J := I to RowCount - 1 do
if Cells[Column, J] <> '' then
begin
DoSort := True;
Break;
end;
if not DoSort then
Exit;
// this is already sorted, so blank items should be at top
while Trim(Cells[Column, I]) = '' do
begin
InsertRow(RowCount).Assign(Rows[I]);
DeleteRow(I);
Inc(J);
if J >= RowCount then
Exit;
end;
end;
begin
// (p3) NB!! sorting might trigger the OnExitCell, OnGetEditText and OnSetEditText events!
// make sure you don't do anything in these events
if (Column >= 0) and (Column < ColCount) and (SortType <> stNone) then
begin
LStart := FixedRows;
LEnd := RowCount - 1;
if BlankTop then
LStart := MoveBlankTop;
if LStart < LEnd then
begin
QuickSort(LStart, LEnd);
if not BlankTop then
MoveBlankBottom;
if not Ascending then
InvertGrid;
end;
end;
end;
procedure TJvStringGrid.LoadFromFile(const FileName: string {$IFDEF UNICODE}; Encoding: TEncoding{$ENDIF});
var
Stream: TFileStream;
begin
Stream := TFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite);
try
LoadFromStream(Stream {$IFDEF UNICODE}, Encoding{$ENDIF});
finally
Stream.Free;
end;
end;
procedure TJvStringGrid.LoadFromCSV(const FileName: string; Separator: Char = ';'; QuoteChar: Char = '"'; StripQuotes: Boolean = True);
var
I: Longint;
Lines, Fields: TStringList;
procedure SplitLine(const Line: string; Result: TStrings; Delimiter, QuoteChar: Char; StripQuotes: Boolean);
var
I, SLen, QuoteCount: Integer;
S: string;
IgnoreDelim: Boolean;
QuotedStr: PChar;
begin
S := '';
SLen := Length(Line);
IgnoreDelim := False;
QuoteCount := 0;
Result.Clear;
for I := 1 to SLen do
begin
if Line[I] = QuoteChar then
begin
Inc(QuoteCount);
{* A Delimiter surrounded by a pair of QuoteChar has to be ignored.
See example above: "FirstName, LastName"
therefor: *}
IgnoreDelim := QuoteCount mod 2 <> 0;
end;
if IgnoreDelim then
S := S + Line[I]
else
if Line[I] <> Delimiter then
S := S + Line[I]
else
begin
if S <> '' then
begin
if StripQuotes and (S[1] = QuoteChar) then
begin
QuotedStr := PChar(S);
Result.Add(AnsiExtractQuotedStr(QuotedStr, QuoteChar));
end
else
Result.Add(S);
end
else
Result.Add(S);
S := '';
end;
end;
if S <> '' then
begin
if StripQuotes and (S[1] = QuoteChar) then
begin
QuotedStr := PChar(S);
Result.Add(AnsiExtractQuotedStr(QuotedStr, QuoteChar));
end
else
Result.Add(S);
end
else
Result.Add(S);
end;
begin
Lines := TStringList.Create;
Fields := TStringList.Create;
try
Lines.LoadFromFile(FileName);
DoLoadProgress(0, Lines.Count);
RowCount := Lines.Count;
ColCount := FixedCols + 1;
for I := 0 to Lines.Count - 1 do
begin
{* added John *}
SplitLine(Lines[I], Fields, Separator, QuoteChar, StripQuotes);
DoLoadProgress(I, Lines.Count);
if Fields.Count > ColCount then
ColCount := Fields.Count;
Rows[I].Assign(Fields);
end;
DoLoadProgress(Lines.Count, Lines.Count);
finally
Fields.Free;
Lines.Free;
end;
end;
procedure TJvStringGrid.LoadFromStream(Stream: TStream {$IFDEF UNICODE}; Encoding: TEncoding{$ENDIF});
const
BufSize = 4096;
GrowSize = 1024;
var
Col, Row, I, Count: Integer;
Buffer: array [0..BufSize - 1] of Byte;
Bytes: TBytes;
Len: Integer;
Size: Int64;
procedure SetCell;
var
St: string;
begin
{$IFDEF UNICODE}
St := Encoding.GetString(Bytes, 0, Len);
{$ELSE}
SetString(St, PAnsiChar(@Bytes[0]), Len);
{$ENDIF UNICODE}
Cells[Col - 1, Row - 1] := St;
if Length(Bytes) > BufSize then
SetLength(Bytes, BufSize);
Len := 0;
end;
begin
{$IFDEF UNICODE}
if Encoding = nil then
Encoding := TEncoding.Default;
{$ENDIF UNICODE}
Col := 0;
Row := 1;
Size := Stream.Size;
DoLoadProgress(0, Size);
Len := 0;
SetLength(Bytes, BufSize);
while Stream.Position < Size do
begin
Count := Stream.Read(Buffer, BufSize);
DoLoadProgress(Stream.Position, Size);
for I := 0 to Count - 1 do
case Buffer[I] of
0:
begin
Inc(Col);
if Row > RowCount then
RowCount := Row;
if Col > ColCount then
ColCount := Col;
SetCell;
end;
1:
begin
Inc(Col);
if Col > ColCount then
ColCount := Col;
SetCell;
Inc(Row);
if Row > RowCount then
RowCount := Row;
Col := 0;
end;
else
if Len >= Length(Bytes) then
SetLength(Bytes, Len + GrowSize);
Bytes[Len] := Buffer[I];
Inc(Len);
end;
end;
RowCount := RowCount - 1;
DoLoadProgress(Stream.Size, Stream.Size);
end;
procedure TJvStringGrid.WMHScroll(var Msg: TWMHScroll);
begin
inherited;
if Assigned(FOnHorizontalScroll) then
FOnHorizontalScroll(Self);
end;
procedure TJvStringGrid.WMVScroll(var Msg: TWMVScroll);
begin
inherited;
if Assigned(FOnVerticalScroll) then
FOnVerticalScroll(Self);
end;
procedure TJvStringGrid.SaveToFile(const FileName: string {$IFDEF UNICODE}; Encoding: TEncoding{$ENDIF});
var
Stream: TFileStream;
begin
Stream := TFileStream.Create(FileName, fmCreate or fmShareDenyWrite);
try
SaveToStream(Stream {$IFDEF UNICODE}, Encoding{$ENDIF});
finally
Stream.Free;
end;
end;
procedure TJvStringGrid.SaveToCSV(const FileName: string; Separator: Char = ';'; QuoteChar: Char = '"');
var
I, J: Longint;
BufStr, Value: string;
Lines: TStringList;
begin
Lines := TStringList.Create;
DoSaveProgress(0, RowCount);
try
Lines.Clear;
for I := 0 to RowCount - 1 do
begin
BufStr := '';
DoSaveProgress(I, RowCount);
for J := 0 to ColCount - 1 do
begin
Value := Cells[J, I];
if Pos(Separator, Value) > 0 then
Value := AnsiQuotedStr(Value, QuoteChar);
BufStr := BufStr + Value;
if J <> (ColCount - 1) then
BufStr := BufStr + Separator;
end;
Lines.Add(BufStr);
end;
DoSaveProgress(RowCount, RowCount);
Lines.SaveToFile(FileName);
finally
Lines.Free;
end;
end;
procedure TJvStringGrid.SaveToStream(Stream: TStream {$IFDEF UNICODE}; Encoding: TEncoding{$ENDIF});
var
I, J, ATotal: Integer;
{$IFNDEF UNICODE}
K: Integer;
{$ENDIF ~UNICODE}
Bytes: TBytes;
St: string;
Len: Integer;
A, B: Byte;
begin
{$IFDEF UNICODE}
if Encoding = nil then
Encoding := TEncoding.Default;
{$ENDIF UNICODE}
A := 0;
B := 1; // A for end of string, B for end of line
ATotal := RowCount * ColCount;
DoSaveProgress(0, ATotal);
for I := 0 to RowCount - 1 do
begin
for J := 0 to ColCount - 1 do
begin
DoSaveProgress(I * ColCount + J, ATotal);
St := Cells[J, I];
{$IFDEF UNICODE}
Bytes := Encoding.GetBytes(St);
Len := Length(Bytes);
{$ELSE}
Len := Length(St);
if Length(Bytes) < Len then
SetLength(Bytes, Len);
for K := 0 to Len - 1 do
if (St[K + 1] = #1) or (St[K + 1] = #0) then
Bytes[K] := 32
else
Bytes[K] := Byte(St[K + 1]);
{$ENDIF}
if Len > 0 then
Stream.Write(Bytes[0], Len);
if J <> ColCount - 1 then
Stream.Write(A, 1);
end;
Stream.Write(B, 1);
end;
DoSaveProgress(ATotal, ATotal);
end;
procedure TJvStringGrid.ActivateCell(AColumn, ARow: Integer);
begin
PostMessage(Handle, GM_ACTIVATECELL, AColumn, ARow);
end;
procedure TJvStringGrid.CaptionClick(AColumn, ARow: Integer);
begin
if Assigned(FCaptionClick) then
FCaptionClick(Self, AColumn, ARow);
end;
function TJvStringGrid.CreateEditor: TInplaceEdit;
begin
Result := TExInplaceEditList.Create(Self);
end;
procedure TJvStringGrid.DefaultDrawCell(AColumn, ARow: Integer; Rect: TRect;
State: TGridDrawState);
const
Flags: array [TAlignment] of DWORD = (DT_LEFT, DT_RIGHT, DT_CENTER);
var
S: string;
begin
if RowHeights[ARow] < CanvasMaxTextHeight(Canvas) then
Exit;
Canvas.FillRect(Rect);
S := Cells[AColumn, ARow];
if Length(S) > 0 then
begin
InflateRect(Rect, -2, -2);
DrawText(Canvas, S, Length(S), Rect,
DT_SINGLELINE or DT_NOPREFIX or DT_VCENTER or
Flags[GetCellAlignment(AColumn, ARow, State)]);
end;
end;
function TJvStringGrid.GetEditStyle(ACol, ARow: Longint): TEditStyle; //override;
begin
FCustomInplaceEditStyle := esSimple;
if Assigned(FOnGetEditStyle) then
begin
FPickListStrings.Clear;
FOnGetEditStyle(Self, ACol, ARow, FPickListStrings, FCustomInplaceEditStyle);
end;
Result := FCustomInplaceEditStyle;
end;
procedure TJvStringGrid.DrawCell(AColumn, ARow: Integer; Rect: TRect; State: TGridDrawState);
begin
if (AColumn < FixedCols) or (ARow < FixedRows) then
Canvas.Font := FixedFont;
if Assigned(OnDrawCell) then
inherited DrawCell(AColumn, ARow, Rect, State)
else
begin
SetCanvasProperties(AColumn, ARow, Rect, State);
DefaultDrawCell(AColumn, ARow, Rect, State);
Canvas.Font := Font;
Canvas.Brush := Brush;
end;
end;
procedure TJvStringGrid.ExitCell(const EditText: string;
AColumn, ARow: Integer);
begin
if Assigned(FOnExitCell) then
FOnExitCell(Self, AColumn, ARow, EditText);
end;
function TJvStringGrid.GetCellAlignment(AColumn, ARow: Integer;
State: TGridDrawState): TAlignment;
begin
Result := FAlignment;
if Assigned(FGetCellAlignment) then
FGetCellAlignment(Self, AColumn, ARow, State, Result);
end;
procedure TJvStringGrid.GMActivateCell(var Msg: TGMActivateCell);
begin
Col := Msg.Column;
Row := Msg.Row;
EditorMode := True;
InplaceEditor.SelectAll;
end;
procedure TJvStringGrid.InvalidateCell(AColumn, ARow: Integer);
begin
inherited InvalidateCell(AColumn, ARow);
end;
procedure TJvStringGrid.InvalidateCol(AColumn: Integer);
begin
inherited InvalidateCol(AColumn);
end;
procedure TJvStringGrid.InvalidateRow(ARow: Integer);
begin
inherited InvalidateRow(ARow);
end;
procedure TJvStringGrid.MouseDown(Button: TMouseButton; Shift: TShiftState;
X, Y: Integer);
begin
inherited MouseDown(Button, Shift, X, Y);
if Button = mbLeft then
MouseToCell(X, Y, FCellOnMouseDown.X, FCellOnMouseDown.Y)
else
FCellOnMouseDown := TGridCoord(Point(-1, -1));
end;
procedure TJvStringGrid.MouseUp(Button: TMouseButton; Shift: TShiftState;
X, Y: Integer);
var
Cell: TGridCoord;
begin
if Button = mbLeft then
MouseToCell(X, Y, Cell.X, Cell.Y);
if CompareMem(@Cell, @FCellOnMouseDown, SizeOf(Cell)) and
((Cell.X < FixedCols) or (Cell.Y < FixedRows)) then
CaptionClick(Cell.X, Cell.Y);
FCellOnMouseDown := TGridCoord(Point(-1, -1));
inherited MouseUp(Button, Shift, X, Y);
end;
procedure TJvStringGrid.SetAlignment(const Value: TAlignment);
begin
if FAlignment <> Value then
begin
FAlignment := Value;
Invalidate;
if Assigned(InplaceEditor) then
TExInplaceEditList(InplaceEditor).RecreateWnd;
end;
end;
procedure TJvStringGrid.SetCanvasProperties(AColumn, ARow: Integer;
Rect: TRect; State: TGridDrawState);
begin
if Assigned(FSetCanvasProperties) then
FSetCanvasProperties(Self, AColumn, ARow, Rect, State);
end;
procedure TJvStringGrid.WMCommand(var Msg: TWMCommand);
begin
if EditorMode and (Msg.Ctl = InplaceEditor.Handle) then
inherited
else
if Msg.Ctl <> 0 then
Msg.Result := SendMessage(Msg.Ctl, CN_COMMAND, TMessage(Msg).wParam, TMessage(Msg).lParam);
end;
function TJvStringGrid.InsertCol(Index: Integer): TStrings;
var
I: Integer;
AStr: TStrings;
begin
ColCount := ColCount + 1;
if Index < 0 then
Index := 0;
if Index >= ColCount then
Index := ColCount - 1;
Result := Cols[Index];
if ColCount = 1 then
Exit;
for I := ColCount - 2 downto Index do
begin
AStr := Cols[I];
Cols[I + 1] := AStr;
end;
Result := Cols[Index];
Result.Clear;
end;
function TJvStringGrid.InsertRow(Index: Integer): TStrings;
var
I: Integer;
AStr: TStrings;
begin
RowCount := RowCount + 1;
if Index < 0 then
Index := 0;
if Index >= RowCount then
Index := RowCount - 1;
Result := Rows[Index];
if RowCount = 1 then
Exit;
for I := RowCount - 2 downto Index do
begin
AStr := Rows[I];
Rows[I + 1] := AStr;
end;
Result.Clear;
end;
procedure TJvStringGrid.RemoveCol(Index: Integer);
var
I: Integer;
AStr: TStrings;
begin
if Index < 0 then
Index := 0;
if Index >= ColCount then
Index := ColCount - 1;
for I := Index + 1 to ColCount - 1 do
begin
AStr := Cols[I];
Cols[I - 1] := AStr;
end;
if ColCount > 1 then
ColCount := ColCount - 1;
end;
procedure TJvStringGrid.RemoveRow(Index: Integer);
var
I: Integer;
AStr: TStrings;
begin
if Index < 0 then
Index := 0;
if Index >= RowCount then
Index := RowCount - 1;
for I := Index + 1 to RowCount - 1 do
begin
AStr := Rows[I];
Rows[I - 1] := AStr;
end;
if RowCount > 1 then
RowCount := RowCount - 1;
end;
procedure TJvStringGrid.Clear;
var
I: Integer;
begin
for I := 0 to ColCount - 1 do
Cols[I].Clear;
end;
procedure TJvStringGrid.HideCol(Index: Integer);
begin
ColWidths[Index] := -1;
end;
procedure TJvStringGrid.HideRow(Index: Integer);
begin
RowHeights[Index] := -1;
end;
procedure TJvStringGrid.ShowCol(Index, AWidth: Integer);
begin
if AWidth <= 0 then
AWidth := DefaultColWidth;
ColWidths[Index] := AWidth;
end;
procedure TJvStringGrid.ShowRow(Index, AHeight: Integer);
begin
if AHeight <= 0 then
AHeight := DefaultRowHeight;
RowHeights[Index] := AHeight;
end;
procedure TJvStringGrid.SetFixedFont(const Value: TFont);
begin
FFixedFont.Assign(Value);
end;
procedure TJvStringGrid.DoFixedFontChange(Sender: TObject);
begin
Invalidate;
end;
// NEW-WP - invoked dynamically from the TInplaceEditList
procedure TJvStringGrid.ListBoxCloseUp(Sender: TObject);
begin
if Assigned(FOnListBoxCloseUp) then
FOnListBoxCloseUp(Self)
end;
procedure TJvStringGrid.EditButtonClick(Sender: TObject); //dynamic;
begin
if Assigned(FOnEditButtonClick) then
FOnEditButtonClick(Self)
end;
procedure TJvStringGrid.AutoSizeCol(Index, MinWidth: Integer);
var
I, J, AColWidth: Integer;
ASize: TSize;
begin
if (Index >= 0) and (Index < ColCount) then
begin
if MinWidth < 0 then
AColWidth := DefaultColWidth
else
AColWidth := MinWidth;
for J := 0 to RowCount - 1 do
begin
if GetTextExtentPoint32(Canvas.Handle, PChar(Cells[Index, J]), Length(Cells[Index, J]), ASize) then
AColWidth := Max(AColWidth, ASize.cx + 8);
end;
ColWidths[Index] := AColWidth;
end
else
begin
for I := 0 to ColCount - 1 do
begin
if MinWidth < 0 then
AColWidth := DefaultColWidth
else
AColWidth := MinWidth;
for J := 0 to RowCount - 1 do
begin
if GetTextExtentPoint32(Canvas.Handle, PChar(Cells[I, J]), Length(Cells[I, J]), ASize) then
AColWidth := Max(AColWidth, ASize.cx + 8);
end;
ColWidths[I] := AColWidth;
end;
end;
end;
procedure TJvStringGrid.HideAll;
var
I: Integer;
begin
if ColCount < RowCount then
for I := 0 to ColCount - 1 do
ColWidths[I] := -1
else
for I := 0 to RowCount - 1 do
RowHeights[I] := -1;
end;
procedure TJvStringGrid.ClearSelection; // Clears selection rectangle!
var
S: TGridRect;
begin
S.Left := -1;
S.Top := -1;
S.Right := -1;
S.Bottom := -1;
Self.Selection := S;
Refresh;
end;
procedure TJvStringGrid.ShowAll(AWidth, AHeight: Integer);
var
I: Integer;
begin
if AWidth < 0 then
AWidth := DefaultColWidth;
if AHeight < 0 then
AHeight := DefaultRowHeight;
for I := 0 to ColCount - 1 do
if ColWidths[I] < 0 then
ColWidths[I] := AWidth;
for I := 0 to RowCount - 1 do
if RowHeights[I] < 0 then
RowHeights[I] := AHeight;
end;
function TJvStringGrid.IsHidden(ACol, ARow: Integer): Boolean;
begin
Result := (ColWidths[ACol] < 0) or (RowHeights[ARow] < 0);
end;
procedure TJvStringGrid.HideCell(ACol, ARow: Integer);
begin
ColWidths[ACol] := -1;
RowHeights[ARow] := -1;
end;
procedure TJvStringGrid.ShowCell(ACol, ARow, AWidth, AHeight: Integer);
begin
if AWidth < 0 then
AWidth := DefaultColWidth;
if AHeight < 0 then
AWidth := DefaultRowHeight;
if ColWidths[ACol] < 0 then
ColWidths[ACol] := AWidth;
if RowHeights[ARow] < 0 then
RowHeights[ARow] := AHeight;
end;
procedure TJvStringGrid.DoLoadProgress(Position, Count: Integer);
begin
if Assigned(FOnLoadProgress) then
FOnLoadProgress(Self, Position, Count);
end;
procedure TJvStringGrid.DoSaveProgress(Position, Count: Integer);
begin
if Assigned(FOnSaveProgress) then
FOnSaveProgress(Self, Position, Count);
end;
procedure TJvStringGrid.SortGridByCols(ColOrder: array of Integer; Fixed: Boolean);
var
I, J, FirstRow: Integer;
Sorted: Boolean;
function Sort(Row1, Row2: Integer): Integer;
var
C: Integer;
begin
C := 0;
Result := AnsiCompareStr(Cols[ColOrder[C]][Row1], Cols[ColOrder[C]][Row2]);
if Result = 0 then
begin
Inc(C);
while (C <= High(ColOrder)) and (Result = 0) do
begin
Result := AnsiCompareStr(Cols[ColOrder[C]][Row1], Cols[ColOrder[C]][Row2]);
Inc(C);
end;
end;
end;
begin
for I := 0 to High(ColOrder) do
if (ColOrder[I] < 0) or (ColOrder[I] >= ColCount) then
Exit;
if Fixed then
FirstRow := 0
else
FirstRow := FixedRows;
J := FirstRow;
Sorted := True;
repeat
Inc(J);
for I := FirstRow to RowCount - 2 do
if Sort(I, I + 1) > 0 then
begin
MoveRow(I + 1, I);
Sorted := False;
end;
until Sorted or (J >= RowCount + 1000);
Repaint;
end;
procedure TJvStringGrid.MoveColumn(FromIndex, ToIndex: Integer);
begin
inherited MoveColumn(FromIndex, ToIndex);
end;
procedure TJvStringGrid.MoveRow(FromIndex, ToIndex: Integer);
begin
inherited MoveRow(FromIndex, ToIndex);
end;
{$IFDEF UNITVERSIONING}
initialization
RegisterUnitVersion(HInstance, UnitVersioning);
finalization
UnregisterUnitVersion(HInstance);
{$ENDIF UNITVERSIONING}
end.