/
vargrid.pas
1486 lines (1374 loc) 路 42.7 KB
/
vargrid.pas
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{*************************************************************************************
This file is part of Transmission Remote GUI.
Copyright (c) 2008-2019 by Yury Sidorov and Transmission Remote GUI working group.
Transmission Remote GUI is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Transmission Remote GUI is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Transmission Remote GUI; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
In addition, as a special exception, the copyright holders give permission to
link the code of portions of this program with the
OpenSSL library under certain conditions as described in each individual
source file, and distribute linked combinations including the two.
You must obey the GNU General Public License in all respects for all of the
code used other than OpenSSL. If you modify file(s) with this exception, you
may extend this exception to your version of the file(s), but you are not
obligated to do so. If you do not wish to do so, delete this exception
statement from your version. If you delete this exception statement from all
source files in the program, then also delete it here.
*************************************************************************************}
unit VarGrid;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Grids, VarList, Graphics, Controls, LMessages, Forms, StdCtrls, LCLType, ExtCtrls,LazUTF8, LCLVersion;
type
TVarGrid = class;
TCellOption = (coDrawCheckBox, coDrawTreeButton);
TCellOptions = set of TCellOption;
TCellAttributes = record
Text: string;
ImageIndex: integer;
Indent: integer;
Options: TCellOptions;
State: TCheckBoxState;
Expanded: boolean;
end;
TOnCellAttributes = procedure (Sender: TVarGrid; ACol, ARow, ADataCol: integer; AState: TGridDrawState; var CellAttribs: TCellAttributes) of object;
TOnDrawCellEvent = procedure (Sender: TVarGrid; ACol, ARow, ADataCol: integer; AState: TGridDrawState; const R: TRect; var ADefaultDrawing: boolean) of object;
TOnSortColumnEvent = procedure (Sender: TVarGrid; var ASortCol: integer) of object;
TCellNotifyEvent = procedure (Sender: TVarGrid; ACol, ARow, ADataCol: integer) of object;
TOnQuickSearch = procedure (Sender: TVarGrid; var SearchText: string; var ARow: integer) of object;
{ TVarGridStringEditor }
TVarGridStringEditor = class(TStringCellEditor)
protected
procedure msg_SetGrid(var Msg: TGridMessage); message GM_SETGRID;
procedure msg_SetBounds(var Msg: TGridMessage); message GM_SETBOUNDS;
end;
{ TVarGrid }
TVarGrid = class(TCustomDrawGrid)
private
FFirstVisibleColumn: integer;
FHideSelection: boolean;
FImages: TImageList;
FItems: TVarList;
FItemsChanging: boolean;
FColumnsMap: array of integer;
FMultiSelect: boolean;
FOnAfterSort: TNotifyEvent;
FOnCellAttributes: TOnCellAttributes;
FOnCheckBoxClick: TCellNotifyEvent;
FOnDrawCell: TOnDrawCellEvent;
FOnEditorHide: TNotifyEvent;
FOnEditorShow: TNotifyEvent;
FOnQuickSearch: TOnQuickSearch;
FOnTreeButtonClick: TCellNotifyEvent;
FSelCount: integer;
FAnchor: integer;
FSortColumn: integer;
FOnSortColumn: TOnSortColumnEvent;
FRow: integer;
FHintCell: TPoint;
FCurSearch: string;
FSearchTimer: TTimer;
FOldOpt: TGridOptions;
FNoDblClick: boolean;
FStrEditor: TVarGridStringEditor;
function GetRow: integer;
function GetRowSelected(RowIndex: integer): boolean;
function GetRowVisible(RowIndex: integer): boolean;
function GetSortOrder: TSortOrder;
procedure ItemsChanged(Sender: TObject);
procedure SetHideSelection(const AValue: boolean);
procedure SetRow(const AValue: integer);
procedure SetRowSelected(RowIndex: integer; const AValue: boolean);
procedure SetRowVisible(RowIndex: integer; const AValue: boolean);
procedure SetSortColumn(const AValue: integer);
procedure SetSortOrder(const AValue: TSortOrder);
procedure UpdateColumnsMap;
procedure UpdateSelCount;
procedure SelectRange(OldRow, NewRow: integer);
procedure CMHintShow(var Message: TCMHintShow); message CM_HINTSHOW;
function CellNeedsCheckboxBitmaps(const aCol,aRow: Integer): boolean;
procedure DrawCellCheckboxBitmaps(const aCol,aRow: Integer; const aRect: TRect);
function FindRow(const SearchStr: string; StartRow: integer): integer;
procedure DoSearchTimer(Sender: TObject);
protected
procedure SizeChanged(OldColCount, OldRowCount: Integer); override;
procedure DrawCell(aCol,aRow: Integer; aRect: TRect; aState:TGridDrawState); override;
procedure ColRowMoved(IsColumn: Boolean; FromIndex,ToIndex: Integer); override;
procedure PrepareCanvas(aCol,aRow: Integer; aState:TGridDrawState); override;
procedure MouseDown(Button: TMouseButton; Shift:TShiftState; X,Y:Integer); override;
procedure MouseMove(Shift: TShiftState; X,Y: Integer);override;
procedure KeyDown(var Key : Word; Shift : TShiftState); override;
procedure UTF8KeyPress(var UTF8Key: TUTF8Char); override;
procedure DoOnCellAttributes(ACol, ARow, ADataCol: integer; AState: TGridDrawState; var CellAttribs: TCellAttributes);
procedure HeaderClick(IsColumn: Boolean; index: Integer); override;
procedure AutoAdjustColumn(aCol: Integer); override;
procedure VisualChange; override;
procedure DrawColumnText(aCol,aRow: Integer; aRect: TRect; aState:TGridDrawState); override;
procedure DblClick; override;
procedure Click; override;
procedure GetCheckBoxState(const aCol, aRow:Integer; var aState:TCheckboxState); override;
procedure SetCheckboxState(const aCol, aRow:Integer; const aState: TCheckboxState); override;
procedure SetupCell(ACol, ARow: integer; AState: TGridDrawState; out CellAttribs: TCellAttributes);
procedure DoOnCheckBoxClick(ACol, ARow: integer);
procedure DoOnTreeButtonClick(ACol, ARow: integer);
function DoMouseWheelDown(Shift: TShiftState; MousePos: TPoint): Boolean; override;
function DoMouseWheelUp(Shift: TShiftState; MousePos: TPoint): Boolean; override;
function DoMouseWheel(Shift: TShiftState; WheelDelta: Integer; MousePos: TPoint): Boolean; override;
procedure DrawRow(aRow: Integer); override;
function GetCells(ACol, ARow: Integer): string; override;
function GetEditText(ACol, ARow: Longint): string; override;
procedure SetEditText(ACol, ARow: Longint; const Value: string); override;
procedure DoEditorShow; override;
procedure DoEditorHide; override;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
function EditorByStyle(Style: TColumnButtonStyle): TWinControl; override;
procedure RemoveSelection;
procedure SelectAll;
procedure Sort; reintroduce;
function ColToDataCol(ACol: integer): integer;
function DataColToCol(ADataCol: integer): integer;
procedure EnsureSelectionVisible;
procedure EnsureRowVisible(ARow: integer);
procedure BeginUpdate; reintroduce;
procedure EndUpdate(aRefresh: boolean = true); reintroduce;
procedure EditCell(ACol, ARow: integer);
property Items: TVarList read FItems;
property RowSelected[RowIndex: integer]: boolean read GetRowSelected write SetRowSelected;
property RowVisible[RowIndex: integer]: boolean read GetRowVisible write SetRowVisible;
property SelCount: integer read FSelCount;
property Row: integer read GetRow write SetRow;
property FirstVisibleColumn: integer read FFirstVisibleColumn;
published
property Align;
property AlternateColor;
property Anchors;
property BorderSpacing;
property BorderStyle;
property Color;
property Columns;
property Constraints;
property DragCursor;
property DragKind;
property DragMode;
property Enabled;
property FixedCols;
property FixedRows;
property Font;
property GridLineWidth;
property Options;
property ParentColor default false;
property ParentFont;
property ParentShowHint default false;
property PopupMenu;
property RowCount;
property ScrollBars;
property ShowHint default True;
property TabOrder;
property TabStop;
property TitleFont;
property TitleImageList;
property TitleStyle default tsNative;
property Visible;
property OnClick;
property OnDblClick;
property OnEnter;
property OnExit;
property OnHeaderClick;
property OnHeaderSized;
property OnKeyDown;
property OnKeyPress;
property OnKeyUp;
property OnMouseDown;
property OnMouseMove;
property OnMouseUp;
property OnMouseWheelDown;
property OnMouseWheelUp;
property OnContextPopup;
property OnDragDrop;
property OnDragOver;
property OnEndDock;
property OnEndDrag;
property OnStartDock;
property OnStartDrag;
property OnUTF8KeyPress;
property OnResize;
property OnGetEditText;
property OnSetEditText;
property Images: TImageList read FImages write FImages;
property MultiSelect: boolean read FMultiSelect write FMultiSelect default False;
property SortColumn: integer read FSortColumn write SetSortColumn default -1;
property SortOrder: TSortOrder read GetSortOrder write SetSortOrder default soAscending;
property HideSelection: boolean read FHideSelection write SetHideSelection default False;
property OnCellAttributes: TOnCellAttributes read FOnCellAttributes write FOnCellAttributes;
property OnDrawCell: TOnDrawCellEvent read FOnDrawCell write FOnDrawCell;
property OnSortColumn: TOnSortColumnEvent read FOnSortColumn write FOnSortColumn;
property OnAfterSort: TNotifyEvent read FOnAfterSort write FOnAfterSort;
property OnCheckBoxClick: TCellNotifyEvent read FOnCheckBoxClick write FOnCheckBoxClick;
property OnTreeButtonClick: TCellNotifyEvent read FOnTreeButtonClick write FOnTreeButtonClick;
property OnQuickSearch: TOnQuickSearch read FOnQuickSearch write FOnQuickSearch;
property OnEditorShow: TNotifyEvent read FOnEditorShow write FOnEditorShow;
property OnEditorHide: TNotifyEvent read FOnEditorHide write FOnEditorHide;
end;
procedure Register;
implementation
uses Variants, Math, GraphType, lclintf, Themes, types, lclproc
{$ifdef LCLcarbon} , carbonproc {$endif LCLcarbon};
const
roSelected = 1;
roCurRow = 2;
procedure Register;
begin
RegisterComponents('TransGUI', [TVarGrid]);
end;
{ TVarGridStringEditor }
procedure TVarGridStringEditor.msg_SetGrid(var Msg: TGridMessage);
begin
inherited;
Msg.Options:=Msg.Options and not EO_AUTOSIZE;
end;
procedure TVarGridStringEditor.msg_SetBounds(var Msg: TGridMessage);
var
ca: TCellAttributes;
begin
with Msg do begin
TVarGrid(Grid).SetupCell(Col, Row, [], ca);
with CellRect do begin
Inc(Left, ca.Indent);
if coDrawTreeButton in ca.Options then
Inc(Left, Bottom - Top);
if coDrawCheckBox in ca.Options then
Inc(Left, Bottom - Top);
if (ca.ImageIndex <> -1) and Assigned(TVarGrid(Grid).Images) then
Inc(Left, TVarGrid(Grid).Images.Width + 2);
Dec(Left, 3);
Dec(Top, 1);
SetBounds(Left, Top, Right-Left, Bottom-Top);
end;
end;
end;
{ TVarGrid }
procedure TVarGrid.ItemsChanged(Sender: TObject);
var
i, OldRows, OldCols: integer;
pt: TPoint;
begin
FItemsChanging:=True;
try
Perform(CM_MouseLeave, 0, 0); // Hack to call ResetHotCell to workaround a bug
OldRows:=RowCount;
OldCols:=Columns.Count;
i:=FItems.RowCnt + FixedRows;
if (FRow = -1) and (inherited Row >= i) and (i > FixedRows) then
inherited Row:=i - 1;
RowCount:=i;
if FRow <> -1 then begin
Row:=FRow;
FRow:=-1;
end;
UpdateSelCount;
while Columns.Count > FItems.ColCnt do
Columns.Delete(Columns.Count - 1);
if Columns.Count <> FItems.ColCnt then begin
Columns.BeginUpdate;
try
for i:=Columns.Count to FItems.ColCnt - 1 do
Columns.Add;
finally
Columns.EndUpdate;
end;
end;
if (OldRows <> RowCount) or (OldCols <> Columns.Count) then begin
if Parent <> nil then
HandleNeeded;
ResetSizes;
end
else
Invalidate;
pt:=ScreenToClient(Mouse.CursorPos);
if PtInRect(ClientRect, pt) then
MouseMove([], pt.x, pt.y);
finally
FItemsChanging:=False;
end;
end;
procedure TVarGrid.SetHideSelection(const AValue: boolean);
begin
if FHideSelection=AValue then exit;
FHideSelection:=AValue;
Invalidate;
end;
procedure TVarGrid.SetRow(const AValue: integer);
var
i, r: integer;
begin
if FItems.IsUpdating then
FRow:=AValue
else begin
r:=AValue + FixedRows;
if r <> inherited Row then begin
i:=LeftCol;
inherited Row:=r;
LeftCol:=i;
end;
end;
end;
function TVarGrid.GetRowSelected(RowIndex: integer): boolean;
begin
Result:=LongBool(FItems.RowOptions[RowIndex] and roSelected);
end;
function TVarGrid.GetRowVisible(RowIndex: integer): boolean;
begin
Result:=RowHeights[RowIndex + FixedRows] > 0;
end;
function TVarGrid.GetSortOrder: TSortOrder;
begin
Result:=inherited SortOrder;
end;
function TVarGrid.GetRow: integer;
begin
if FItems.IsUpdating and (FRow <> -1) then
Result:=FRow
else begin
Result:=inherited Row - FixedRows;
end;
end;
procedure TVarGrid.SetRowSelected(RowIndex: integer; const AValue: boolean);
var
i, j: integer;
begin
i:=FItems.RowOptions[RowIndex];
if AValue then begin
j:=i or roSelected;
if j <> i then
Inc(FSelCount);
end
else begin
j:=i and not roSelected;
if j <> i then
Dec(FSelCount);
end;
FItems.RowOptions[RowIndex]:=j;
InvalidateRow(RowIndex + FixedRows);
if FSelCount <= 1 then
InvalidateRow(inherited Row);
end;
procedure TVarGrid.SetRowVisible(RowIndex: integer; const AValue: boolean);
begin
if AValue then
RowHeights[RowIndex + FixedRows]:=DefaultRowHeight
else
RowHeights[RowIndex + FixedRows]:=0;
end;
procedure TVarGrid.SetSortColumn(const AValue: integer);
begin
if FSortColumn=AValue then exit;
FSortColumn:=AValue;
if FSortColumn >= 0 then
Options:=Options + [goHeaderPushedLook, goHeaderHotTracking]
else
Options:=Options - [goHeaderPushedLook, goHeaderHotTracking];
Sort;
end;
procedure TVarGrid.SetSortOrder(const AValue: TSortOrder);
begin
if SortOrder = AValue then exit;
inherited SortOrder:=AValue;
Sort;
end;
procedure TVarGrid.UpdateColumnsMap;
var
i, j: integer;
begin
FFirstVisibleColumn:=-1;
SetLength(FColumnsMap, Columns.Count);
j:=0;
for i:=0 to Columns.Count - 1 do
with Columns[i] do begin
if (FFirstVisibleColumn < 0) and Visible then
FFirstVisibleColumn:=i;
FColumnsMap[j]:=ID - 1;
Inc(j);
end;
SetLength(FColumnsMap, j);
end;
procedure TVarGrid.UpdateSelCount;
var
i: integer;
begin
FSelCount:=0;
for i:=0 to FItems.Count - 1 do
if RowSelected[i] then
Inc(FSelCount);
end;
procedure TVarGrid.SelectRange(OldRow, NewRow: integer);
var
dir: integer;
sel: boolean;
begin
if OldRow = NewRow then
exit;
if FAnchor = -1 then
FAnchor:=OldRow;
dir:=Sign(NewRow - OldRow);
if Sign(FAnchor - OldRow) <> Sign(FAnchor - NewRow) then
while OldRow <> FAnchor do begin
RowSelected[OldRow]:=False;
Inc(OldRow, dir);
end;
sel:=Abs(FAnchor - OldRow) < Abs(FAnchor - NewRow);
while OldRow <> NewRow do begin
RowSelected[OldRow]:=sel;
Inc(OldRow, dir);
end;
RowSelected[NewRow]:=True;
end;
procedure TVarGrid.CMHintShow(var Message: TCMHintShow);
var
ca: TCellAttributes;
pt: TPoint;
wd: integer;
R: TRect;
begin
with Message.HintInfo^ do begin
pt:=MouseToCell(CursorPos);
if (pt.x >= FixedCols) and (pt.y >= 0) then begin
R:=CellRect(pt.x, pt.y);
if PtInRect(R, CursorPos) then begin
SetupCell(pt.x, pt.y, [], ca);
if ca.Text <> '' then begin
wd:=Canvas.TextWidth(ca.Text);
Inc(R.Left, ca.Indent);
if coDrawTreeButton in ca.Options then
Inc(R.Left, R.Bottom - R.Top);
if coDrawCheckBox in ca.Options then
Inc(R.Left, R.Bottom - R.Top);
if (ca.ImageIndex <> -1) and Assigned(FImages) then
Inc(R.Left, FImages.Width + 2);
if (R.Right <= R.Left) or (R.Right - R.Left < wd + 5) then begin
HintStr:=ca.Text;
R.Top:=(R.Top + R.Bottom - Canvas.TextHeight(ca.Text)) div 2 - 4;
Dec(R.Left);
HintPos:=ClientToScreen(R.TopLeft);
end;
FHintCell:=pt;
end
else
Message.Result:=1;
end
else
Message.Result:=1;
end;
end;
end;
function TVarGrid.CellNeedsCheckboxBitmaps(const aCol, aRow: Integer): boolean;
var
C: TGridColumn;
begin
Result := false;
if (aRow>=FixedRows) and Columns.Enabled then begin
C := ColumnFromGridColumn(aCol);
result := (C<>nil) and (C.ButtonStyle=cbsCheckboxColumn)
end;
end;
procedure TVarGrid.DrawCellCheckboxBitmaps(const aCol, aRow: Integer; const aRect: TRect);
var
AState: TCheckboxState;
begin
AState := cbUnchecked;
GetCheckBoxState(aCol, aRow, aState);
DrawGridCheckboxBitmaps(aCol, aRow, aRect, aState);
end;
function TVarGrid.FindRow(const SearchStr: string; StartRow: integer): integer;
var
i, c: integer;
s, ss: string;
v: variant;
begin
Result:=-1;
if Columns.Count = 0 then
exit;
c:=SortColumn;
if (c < 0) or (c >= Items.ColCnt) then
c:=0;
ss:= LazUTF8.UTF8UpperCase(SearchStr);
for i:=StartRow to Items.Count - 1 do begin
v:=Items[c, i];
if VarIsNull(v) or VarIsEmpty(v) then
s:= ''
else
s:= LazUTF8.UTF8UpperCase(UTF8Encode(widestring(v)));
if Copy(s, 1, Length(ss)) = ss then begin
Result:=i;
break;
end;
end;
end;
procedure TVarGrid.DoSearchTimer(Sender: TObject);
begin
FSearchTimer.Enabled:=False;
FCurSearch:='';
end;
procedure TVarGrid.SizeChanged(OldColCount, OldRowCount: Integer);
begin
if not FItemsChanging and (FItems <> nil) then begin
FItems.ColCnt:=Columns.Count;
FItems.RowCnt:=RowCount - FixedRows;
UpdateColumnsMap;
end;
inherited;
end;
procedure TVarGrid.DrawCell(aCol, aRow: Integer; aRect: TRect; aState: TGridDrawState);
var
ca: TCellAttributes;
// ts: TTextStyle;
dd, IsHeader: boolean;
R, RR: TRect;
det: TThemedElementDetails;
sz: TSize;
i: integer;
begin
RR:=aRect;
IsHeader:=(gdFixed in aState) and (aRow=0) and (aCol>=FirstGridColumn);
if not IsHeader and MultiSelect and (FSelCount > 0) then
if (aRow >= FixedRows) and (aCol >= FixedCols) and RowSelected[aRow - FixedRows] then
Include(aState, gdSelected)
else
Exclude(aState, gdSelected);
PrepareCanvas(aCol, aRow, aState);
if DefaultDrawing then
SetupCell(aCol, aRow, aState, ca);
if not IsHeader or (TitleStyle<>tsNative) then
Canvas.FillRect(aRect);
if not IsHeader then begin
dd:=True;
if Assigned(FOnDrawCell) then begin
R:=CellRect(aCol, aRow);
if goVertLine in Options then
Dec(R.Right, 1);
if goHorzLine in Options then
Dec(R.Bottom, 1);
FOnDrawCell(Self, aCol, aRow - FixedRows, ColToDataCol(aCol), aState, R, dd);
end;
if DefaultDrawing and dd then begin
if CellNeedsCheckboxBitmaps(aCol,aRow) then
DrawCellCheckboxBitmaps(aCol,aRow,aRect)
else begin
Inc(aRect.Left, ca.Indent);
if coDrawTreeButton in ca.Options then begin
R:=aRect;
R.Right:=R.Left + (R.Bottom - R.Top);
aRect.Left:=R.Right;
if ThemeServices.ThemesEnabled then begin
if ca.Expanded then
det:=ThemeServices.GetElementDetails(ttGlyphOpened)
else
det:=ThemeServices.GetElementDetails(ttGlyphClosed);
sz:=ThemeServices.GetDetailSize(det);
with R do begin
Left:=(Left + Right - sz.cx) div 2;
Top:=(Top + Bottom - sz.cy) div 2;
R:=Bounds(Left, Top, sz.cx, sz.cy);
end;
ThemeServices.DrawElement(Canvas.Handle, det, R, nil);
end
else
with Canvas do begin
i:=(R.Bottom - R.Top) div 4;
InflateRect(R, -i, -i);
if (R.Right - R.Left) and 1 = 0 then
Dec(R.Right);
if (R.Bottom - R.Top) and 1 = 0 then
Dec(R.Bottom);
Pen.Color:=clWindowText;
Rectangle(R);
InflateRect(R, -1, -1);
Brush.Color:=clWindow;
FillRect(R);
InflateRect(R, -1, -1);
i:=(R.Top + R.Bottom) div 2;
MoveTo(R.Left, i);
LineTo(R.Right, i);
if not ca.Expanded then begin
i:=(R.Left + R.Right) div 2;
MoveTo(i, R.Top);
LineTo(i, R.Bottom);
end;
end;
end;
if coDrawCheckBox in ca.Options then begin
R:=aRect;
R.Right:=R.Left + (R.Bottom - R.Top);
aRect.Left:=R.Right;
DrawGridCheckboxBitmaps(aCol, aRow, R, ca.State);
end;
if (ca.ImageIndex <> -1) and Assigned(FImages) then begin
FImages.Draw(Canvas, aRect.Left + 2, (aRect.Bottom + aRect.Top - FImages.Height) div 2, ca.ImageIndex, gdeNormal);
Inc(aRect.Left, FImages.Width + 2);
end;
if ca.Text <> '' then begin
{
if Canvas.TextStyle.Alignment <> taLeftJustify then
if (aRect.Right <= aRect.Left) or (aRect.Right - aRect.Left < Canvas.TextWidth(ca.Text) + 9) then begin
ts:=Canvas.TextStyle;
ts.Alignment:=taLeftJustify;
Canvas.TextStyle:=ts;
end;
DrawCellText(aCol, aRow, aRect, aState, ca.Text);
}
with aRect do begin
Inc(Top, 2);
Inc(Left, constCellPadding);
Dec(Right, constCellPadding);
if Right<Left then
Right:=Left;
if Left>Right then
Left:=Right;
if Bottom<Top then
Bottom:=Top;
if Top>Bottom then
Top:=Bottom;
if (Left <> Right) and (Top <> Bottom) then begin
if Canvas.TextStyle.Alignment <> taLeftJustify then begin
i:=Canvas.TextWidth(ca.Text);
if i < Right - Left then
case Canvas.TextStyle.Alignment of
taRightJustify:
Left:=Right - i;
taCenter:
Left:=(Left + Right - i) div 2;
end;
end;
ExtUTF8Out(Canvas.Handle, Left, Top, ETO_OPAQUE or ETO_CLIPPED, @aRect, PChar(ca.Text), Length(ca.Text), nil);
end;
end;
end;
end;
end;
end;
if gdFixed in aState then
DefaultDrawCell(aCol, aRow, RR, aState)
else
DrawCellGrid(aCol, aRow, RR, aState);
end;
procedure TVarGrid.ColRowMoved(IsColumn: Boolean; FromIndex, ToIndex: Integer);
begin
inherited ColRowMoved(IsColumn, FromIndex, ToIndex);
UpdateColumnsMap;
end;
procedure TVarGrid.PrepareCanvas(aCol, aRow: Integer; aState: TGridDrawState);
var
F: TCustomForm;
begin
if FHideSelection and (FSelCount = 0) then begin
F:=GetParentForm(Self);
if (F <> nil) and (F.ActiveControl <> Self) then
aState:=aState - [gdSelected];
end;
inherited PrepareCanvas(aCol, aRow, aState);
with Canvas do
if (Font.Color = clWindow) and (Brush.Color = clHighlight) then begin
Font.Color:=clHighlightText;
{$ifdef LCLgtk2}
Brush.Color:=ColorToRGB(Brush.Color); // Workaround for LCL bug
{$endif LCLgtk2}
end;
end;
procedure TVarGrid.MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
var
pt: TPoint;
IsCtrl, CheckBoxClicked: boolean;
ca: TCellAttributes;
R, RR: TRect;
begin
{$ifdef LCLcarbon}
IsCtrl:=ssMeta in GetCarbonShiftState;
{$else}
{$ifdef LCLCocoa}
IsCtrl:=ssMeta in Shift;
{$else}
IsCtrl:=ssCtrl in Shift;
{$endif LCLCocoa}
{$endif LCLcarbon}
CheckBoxClicked:=False;
pt:=MouseToCell(Point(X,Y));
if ssLeft in Shift then begin
SetupCell(pt.x, pt.y, [], ca);
RR:=CellRect(pt.x, pt.y);
Inc(RR.Left, ca.Indent);
if (RR.Left <= RR.Right) and (coDrawTreeButton in ca.Options) then begin
R:=RR;
R.Right:=R.Left + (R.Bottom - R.Top);
if R.Right > RR.Right then
R.Right:=RR.Right;
if PtInRect(R, Point(X,Y)) then begin
DoOnTreeButtonClick(pt.x, pt.y);
InvalidateCell(pt.x, pt.y);
if Assigned(OnDblClick) and (ssDouble in Shift) then
FNoDblClick:=True;
end;
Inc(RR.Left, RR.Bottom - RR.Top);
end;
if (RR.Left <= RR.Right) and (coDrawCheckBox in ca.Options) then begin
R:=RR;
R.Right:=R.Left + (R.Bottom - R.Top);
if R.Right > RR.Right then
R.Right:=RR.Right;
if PtInRect(R, Point(X,Y)) then begin
DoOnCheckBoxClick(pt.x, pt.y);
InvalidateCell(pt.x, pt.y);
CheckBoxClicked:=True;
if Assigned(OnDblClick) and (ssDouble in Shift) then
FNoDblClick:=True;
end;
end;
end;
if (ssRight in Shift) {$ifdef darwin} or (Shift*[ssLeft, ssCtrl] = [ssLeft, ssCtrl]) {$endif} then begin
SetFocus;
if (pt.x >= FixedCols) and (pt.y >= FixedRows) then begin
if MultiSelect and (SelCount > 0) and not RowSelected[pt.y - FixedRows] then
RemoveSelection;
Row:=pt.y - FixedRows;
end;
end
else
if MultiSelect and (ssLeft in Shift) and (pt.x >= FixedCols) and (pt.y >= FixedRows) then begin
if IsCtrl then begin
if SelCount = 0 then
RowSelected[Row]:=True;
RowSelected[pt.y - FixedRows]:=not RowSelected[pt.y - FixedRows];
FAnchor:=-1;
end
else
if ssShift in Shift then
SelectRange(Row, pt.y - FixedRows)
else begin
if (SelCount > 0) and not CheckBoxClicked then
RemoveSelection;
FAnchor:=-1;
end;
end;
inherited MouseDown(Button, Shift, X, Y);
end;
procedure TVarGrid.MouseMove(Shift: TShiftState; X, Y: Integer);
var
pt: TPoint;
begin
NullStrictConvert := False;
inherited MouseMove(Shift, X, Y);
pt:=MouseToCell(Point(x, y));
if (FHintCell.x <> -1) and ((FHintCell.x <> pt.x) or (FHintCell.y <> pt.y)) then begin
Application.CancelHint;
FHintCell.x:=-1;
end;
end;
procedure TVarGrid.KeyDown(var Key: Word; Shift: TShiftState);
var
r, k: integer;
ca: TCellAttributes;
begin
if EditorMode then begin
if Key = VK_ESCAPE then begin
EditorHide;
SetFocus;
end;
exit;
end;
r:=Row;
k:=Key;
if (Shift = []) and ( (k = VK_SPACE) or (k = VK_LEFT) or (k = VK_RIGHT) or (k = VK_ADD) or (k = VK_SUBTRACT) ) then begin
SetupCell(FixedCols, inherited Row, [], ca);
case k of
VK_SPACE:
if coDrawCheckBox in ca.Options then begin
DoOnCheckBoxClick(FixedCols, inherited Row);
Key:=0;
exit;
end;
VK_LEFT, VK_SUBTRACT:
if (coDrawTreeButton in ca.Options) and ca.Expanded then begin
DoOnTreeButtonClick(FixedCols, inherited Row);
Key:=0;
exit;
end;
VK_RIGHT, VK_ADD:
if (coDrawTreeButton in ca.Options) and not ca.Expanded then begin
DoOnTreeButtonClick(FixedCols, inherited Row);
Key:=0;
exit;
end;
end;
end;
inherited KeyDown(Key, Shift);
if MultiSelect then begin
if ssCtrl in Shift then begin
if k = VK_SPACE then
RowSelected[Row]:=not RowSelected[Row];
FAnchor:=-1;
end
else
if ssShift in Shift then begin
SelectRange(r, Row);
end
else
if k in [VK_LEFT, VK_RIGHT, VK_UP, VK_DOWN, VK_HOME, VK_END, VK_NEXT, VK_PRIOR] then begin
if SelCount > 0 then
RemoveSelection;
FAnchor:=-1;
end;
end;
if (Key = VK_RETURN) and (Shift = []) and Assigned(OnDblClick) then
OnDblClick(Self);
end;
procedure TVarGrid.UTF8KeyPress(var UTF8Key: TUTF8Char);
var
i, r: integer;
begin
inherited UTF8KeyPress(UTF8Key);
if UTF8Key = #0 then
exit;
FSearchTimer.Enabled:=False;
FSearchTimer.Enabled:=True;
if FCurSearch = '' then
i:=0
else
i:=Row;
FCurSearch:=FCurSearch + UTF8Key;
if Assigned(FOnQuickSearch) then begin
r:=i;
FOnQuickSearch(Self, FCurSearch, r);
if r <> i then
Row:=r;
end
else begin
i:=FindRow(FCurSearch, i);
if i >= 0 then
Row:=i;
end;
end;
procedure TVarGrid.DoOnCellAttributes(ACol, ARow, ADataCol: integer; AState: TGridDrawState; var CellAttribs: TCellAttributes);
begin
if Assigned(FOnCellAttributes) then
FOnCellAttributes(Self, ACol, ARow, ADataCol, AState, CellAttribs);
end;
procedure TVarGrid.HeaderClick(IsColumn: Boolean; index: Integer);
var
i: integer;
begin
inherited HeaderClick(IsColumn, index);
if IsColumn and (FSortColumn >= 0) then begin
fGridState:=gsNormal;
i:=ColToDataCol(index);
if FSortColumn = i then begin
if SortOrder = soAscending then
SortOrder:=soDescending
else
SortOrder:=soAscending;
end
else begin
SortOrder:=soAscending;
SortColumn:=i;
end;
end;
end;
procedure TVarGrid.AutoAdjustColumn(aCol: Integer);
var
i, j, wd, h, fr: integer;
ca: TCellAttributes;
begin
wd:=4;
fr:=FixedRows;
for i:=0 to FItems.Count - 1 do begin
h:=RowHeights[i + fr];
if h > 0 then begin
SetupCell(aCol, i + fr, [], ca);
j:=Canvas.TextWidth(ca.Text) + 6;
Inc(j, ca.Indent);
if coDrawTreeButton in ca.Options then
Inc(j, h);
if coDrawCheckBox in ca.Options then
Inc(j, h);
if (ca.ImageIndex <> -1) and Assigned(FImages) then
Inc(j, FImages.Width + 2);
if j > wd then
wd:=j;
end;
end;
ColumnFromGridColumn(aCol).Width:=wd;
end;
procedure TVarGrid.VisualChange;
begin
inherited VisualChange;
if HandleAllocated then
DefaultRowHeight:=Canvas.TextHeight('Xy') + 5;
UpdateColumnsMap;
end;
procedure TVarGrid.DrawColumnText(aCol, aRow: Integer; aRect: TRect; aState: TGridDrawState);
var
R: TRect;
i: integer;
begin
if (gdFixed in aState) and (aRow=0) and (aCol>=FirstGridColumn) then begin
R:=aRect;
if FSortColumn = ColToDataCol(aCol) then begin
R.Right:=R.Left + R.Bottom - R.Top;
InflateRect(R, -5, -5);
OffsetRect(R, -3, 0);
Dec(R.Bottom, 2);