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| unit Unit1;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, Grids,
StdCtrls, LMessages, LCLType, LCLIntf;
type
TSyncKind = (skBoth, skVScroll, skHScroll);
TSyncStringGrid = class(TStringGrid)
private
FInSync: Boolean;
FsyncGrid: TSyncStringGrid;
FSyncKind: TSyncKind;
{ Private declarations }
procedure LMVScroll(var Msg: TLMessage); message LM_VSCROLL;
procedure LMHScroll(var Msg: TLMessage); message LM_HSCROLL;
protected
{ Protected declarations }
public
{ Public declarations }
procedure DoSync(Msg, wParam: Integer; lParam: Longint); virtual;
published
{ Published declarations }
property SyncGrid: TSyncStringGrid read FSyncGrid write FSyncGrid;
property SyncKind: TSyncKind read FSyncKind write FSyncKind default skBoth;
end;
{ TForm1 }
TForm1 = class(TForm)
SG1, SGHorz: TStringGrid;
SGVert: TStringGrid;
procedure FormCreate(Sender: TObject);
procedure SG1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure SG1MouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure SG1PrepareCanvas(sender: TObject; aCol, aRow: Integer;
aState: TGridDrawState);
private
{ private declarations }
GridEvent1, GridEvent2, GridEvent3: TWndMethod;
procedure Grid1WindowProc(var Message: TLMessage);
procedure Grid2WindowProc(var Message: TLMessage);
procedure Grid3WindowProc(var Message: TLMessage);
public
{ public declarations }
end;
var
Form1: TForm1;
bColD, bRowD : integer;
implementation
{$R *.lfm}
procedure TSyncStringGrid.DoSync(Msg, wParam: Integer; lParam: Longint);
begin
FInSync := True;
Perform(Msg, wParam, lParam);
FinSync := False;
end;
procedure TSyncStringGrid.LMVScroll(var Msg: TLMessage);
begin
if not FInSync
and Assigned(FSyncGrid)
and (FSyncKind in [skBoth, skVScroll]) then
FSyncGrid.DoSync(LM_VSCROLL, Msg.wParam, Msg.lParam);
inherited;
end;
procedure TSyncStringGrid.LMHScroll(var Msg: TLMessage);
begin
if not FInSync
and Assigned(FSyncGrid)
and (FSyncKind in [skBoth, skHScroll]) then
FSyncGrid.DoSync(LM_HSCROLL, Msg.wParam, Msg.lParam);
inherited;
end;
{ TForm1 }
procedure TForm1.Grid1WindowProc(var Message: TLMessage);
begin
GridEvent1(Message);
if ((Message.Msg = LM_VSCROLL)
or (Message.Msg = LM_HSCROLL)
or (Message.Msg = LM_MOUSEWHEEL)) then
GridEvent2(Message);
end;
procedure TForm1.Grid2WindowProc(var Message: TLMessage);
begin
GridEvent2(Message);
if ((Message.Msg = LM_VSCROLL)
or (Message.Msg = LM_HSCROLL)
or (Message.Msg = LM_MOUSEWHEEL)
) then
GridEvent1(Message);
end;
procedure TForm1.Grid3WindowProc(var Message: TLMessage);
begin
GridEvent3(Message);
if ((Message.Msg = LM_VSCROLL)
or (Message.Msg = LM_HSCROLL)
or (Message.Msg = LM_MOUSEWHEEL)) then
GridEvent1(Message);
end;
procedure TForm1.FormCreate(Sender: TObject);
var i : integer;
begin
GridEvent1 := SG1.WindowProc;
GridEvent2 := SGVert.WindowProc;
GridEvent3 := SGHorz.WindowProc;
with SG1 do begin
Rowcount := 30;
ColCount := 20;
FixedRows := 1;
FixedCols := 1
end;
with SGVert do begin
Rowcount := SG1.Rowcount;
ColCount := 1;
FixedRows := 1;
FixedCols := 0; {Sinon pas de gestion du ScroolBar}
end;
with SGHorz do begin
Rowcount := 1;
ColCount := SG1.Colcount;
FixedRows := 0; {Sinon pas de gestion du ScroolBar}
FixedCols := 1;
end;
with SG1 do
for i := 1 to RowCount - 1 do begin
Cells[0, i] := IntToStr(i);
SGVert.Cells[0, i] := 'Tot '+ IntToStr(i);
end;
with SG1 do
for i := 1 to ColCount - 1 do begin
Cells[i, 0 ] := IntToStr(i);
SGHorz.Cells[i, 0] := 'Tot ' + IntToStr(i);
end;
with SGVert do Cells[0, 0] := 'Totaux';
with SGHorz do Cells[0 ,0] := 'Totaux';
SG1.WindowProc := @Grid1WindowProc;
SGVert.WindowProc := @Grid2WindowProc;
SGHorz.WindowProc := @Grid3WindowProc;
end;
procedure TForm1.SG1MouseDown(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
begin
{Pour le positionnement des cellules - Voir MouseUp}
{if SG1.AutoAdvance <> aaNone then SG1.AutoAdvance := aaNone;
Non fonctionnel ? Mal utilisé sans doute}
SG1.MouseToCell(X, Y, bColD, bRowD);
end;
procedure TForm1.SG1MouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
aRowTmp : integer;
begin
{Pour le positionnement des cellules}
{Comportement bizarre si click sur cellule dont faible fraction de
la hauteur affichée aussi bien en haut qu'en bas}
if (bRowD = SG1.TopRow) or (bRowD = SG1.RowCount -1) then begin
if bRowD < SG1.Rowcount -1 then
aRowTmp := SG1.topRow +1
else aRowTmp := SG1.topRow -1;
SGVert.topRow := aRowTmp;
SGVert.Row := aRowTmp;
SG1.topRow := aRowTmp;
SG1.Row:= aRowTmp;
SGVert.topRow := bRowD;
SGVert.Row := bRowD;
SG1.topRow := bRowD;
SG1.Row := bRowD;
end;
SGHorz.Col := bColD;
end;
procedure TForm1.SG1PrepareCanvas(sender: TObject; aCol, aRow: Integer;
aState: TGridDrawState);
begin
SGVert.TopRow := SG1.TopRow ; {Pour la gestion de SG1.MouseWheel}
end;
end. |
