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PICKDATE.PAS
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Pascal/Delphi Source File
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2001-06-24
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1,146 lines
{*******************************************************}
{ }
{ Delphi VCL Extensions (RX) }
{ }
{ Copyright (c) 1995, 1996 AO ROSNO }
{ Copyright (c) 1997, 1998 Master-Bank }
{ }
{*******************************************************}
unit PickDate;
{$I RX.INC}
{$S-}
interface
uses Windows, Classes, Variants, Controls, SysUtils, Graphics, DateUtil;
{ Calendar dialog }
function SelectDate(var Date: TDateTime; const DlgCaption: TCaption;
AStartOfWeek: TDayOfWeekName; AWeekends: TDaysOfWeek;
AWeekendColor: TColor; BtnHints: TStrings): Boolean;
function SelectDateStr(var StrDate: string; const DlgCaption: TCaption;
AStartOfWeek: TDayOfWeekName; AWeekends: TDaysOfWeek;
AWeekendColor: TColor; BtnHints: TStrings): Boolean;
function PopupDate(var Date: TDateTime; Edit: TWinControl): Boolean;
{ Popup calendar }
function CreatePopupCalendar(AOwner: TComponent
{$IFDEF RX_D4}; ABiDiMode: TBiDiMode = bdLeftToRight {$ENDIF}): TWinControl;
procedure SetupPopupCalendar(PopupCalendar: TWinControl;
AStartOfWeek: TDayOfWeekName; AWeekends: TDaysOfWeek;
AWeekendColor: TColor; BtnHints: TStrings; FourDigitYear: Boolean);
const
PopupCalendarSize: TPoint = (X: 187; Y: 124);
implementation
uses Messages, Consts, Forms, Buttons, StdCtrls, Grids, ExtCtrls, RXCtrls,
RXCConst, ToolEdit, VCLUtils, MaxMin, rxStrUtils;
{$IFDEF WIN32}
{$R *.R32}
{$ELSE}
{$R *.R16}
{$ENDIF}
const
SBtnGlyphs: array[0..3] of PChar = ('PREV2', 'PREV1', 'NEXT1', 'NEXT2');
procedure FontSetDefault(AFont: TFont);
{$IFDEF WIN32}
var
NonClientMetrics: TNonClientMetrics;
{$ENDIF}
begin
{$IFDEF WIN32}
NonClientMetrics.cbSize := SizeOf(NonClientMetrics);
if SystemParametersInfo(SPI_GETNONCLIENTMETRICS, 0, @NonClientMetrics, 0) then
AFont.Handle := CreateFontIndirect(NonClientMetrics.lfMessageFont)
else
{$ENDIF}
with AFont do begin
Color := clWindowText;
Name := 'MS Sans Serif';
Size := 8;
Style := [];
end;
end;
{ TRxTimerSpeedButton }
type
TRxTimerSpeedButton = class(TRxSpeedButton)
public
constructor Create(AOwner: TComponent); override;
published
property AllowTimer default True;
property Style default bsWin31;
end;
constructor TRxTimerSpeedButton.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
Style := bsWin31;
AllowTimer := True;
{$IFDEF WIN32}
ControlStyle := ControlStyle + [csReplicatable];
{$ENDIF}
end;
{ TRxCalendar }
{ TRxCalendar implementation copied from Borland CALENDAR.PAS sample unit
and modified }
type
TDayOfWeek = 0..6;
TRxCalendar = class(TCustomGrid)
private
FDate: TDateTime;
FMonthOffset: Integer;
FOnChange: TNotifyEvent;
FReadOnly: Boolean;
FStartOfWeek: TDayOfWeekName;
FUpdating: Boolean;
FUseCurrentDate: Boolean;
FWeekends: TDaysOfWeek;
FWeekendColor: TColor;
function GetCellText(ACol, ARow: Integer): string;
function GetDateElement(Index: Integer): Integer;
procedure SetCalendarDate(Value: TDateTime);
procedure SetDateElement(Index: Integer; Value: Integer);
procedure SetStartOfWeek(Value: TDayOfWeekName);
procedure SetUseCurrentDate(Value: Boolean);
procedure SetWeekendColor(Value: TColor);
procedure SetWeekends(Value: TDaysOfWeek);
function IsWeekend(ACol, ARow: Integer): Boolean;
procedure CalendarUpdate(DayOnly: Boolean);
function StoreCalendarDate: Boolean;
protected
procedure CreateParams(var Params: TCreateParams); override;
procedure Change; dynamic;
procedure ChangeMonth(Delta: Integer);
procedure Click; override;
function DaysThisMonth: Integer;
procedure DrawCell(ACol, ARow: Longint; ARect: TRect; AState: TGridDrawState); override;
procedure KeyDown(var Key: Word; Shift: TShiftState); override;
procedure KeyPress(var Key: Char); override;
function SelectCell(ACol, ARow: Longint): Boolean; override;
procedure WMSize(var Message: TWMSize); message WM_SIZE;
public
constructor Create(AOwner: TComponent); override;
procedure NextMonth;
procedure NextYear;
procedure PrevMonth;
procedure PrevYear;
procedure UpdateCalendar; virtual;
property CellText[ACol, ARow: Integer]: string read GetCellText;
published
property CalendarDate: TDateTime read FDate write SetCalendarDate
stored StoreCalendarDate;
property Day: Integer index 3 read GetDateElement write SetDateElement stored False;
property Month: Integer index 2 read GetDateElement write SetDateElement stored False;
property ReadOnly: Boolean read FReadOnly write FReadOnly default False;
property StartOfWeek: TDayOfWeekName read FStartOfWeek write SetStartOfWeek default Mon;
property UseCurrentDate: Boolean read FUseCurrentDate write SetUseCurrentDate default True;
property WeekendColor: TColor read FWeekendColor write SetWeekendColor default clRed;
property Weekends: TDaysOfWeek read FWeekends write SetWeekends default [Sun];
property Year: Integer index 1 read GetDateElement write SetDateElement stored False;
property OnChange: TNotifyEvent read FOnChange write FOnChange;
end;
constructor TRxCalendar.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FUseCurrentDate := True;
FStartOfWeek := Mon;
FWeekends := [Sun];
FWeekendColor := clRed;
FixedCols := 0;
FixedRows := 1;
ColCount := 7;
RowCount := 7;
ScrollBars := ssNone;
Options := Options - [goRangeSelect] + [goDrawFocusSelected];
ControlStyle := ControlStyle + [csFramed];
FDate := Date;
UpdateCalendar;
end;
procedure TRxCalendar.CreateParams(var Params: TCreateParams);
begin
inherited CreateParams(Params);
Params.Style := Params.Style or WS_BORDER;
{$IFDEF WIN32}
Params.ExStyle := Params.ExStyle and not WS_EX_CLIENTEDGE;
{$ENDIF}
{$IFDEF RX_D4}
AddBiDiModeExStyle(Params.ExStyle);
{$ENDIF}
end;
procedure TRxCalendar.Change;
begin
if Assigned(FOnChange) then FOnChange(Self);
end;
procedure TRxCalendar.Click;
var
TheCellText: string;
begin
inherited Click;
TheCellText := CellText[Col, Row];
if TheCellText <> '' then Day := StrToInt(TheCellText);
end;
function TRxCalendar.DaysThisMonth: Integer;
begin
Result := DaysPerMonth(Year, Month);
end;
procedure TRxCalendar.DrawCell(ACol, ARow: Longint; ARect: TRect; AState: TGridDrawState);
var
TheText: string;
begin
TheText := CellText[ACol, ARow];
with ARect, Canvas do begin
if IsWeekend(ACol, ARow) and not (gdSelected in AState) then
Font.Color := WeekendColor;
TextRect(ARect, Left + (Right - Left - TextWidth(TheText)) div 2,
Top + (Bottom - Top - TextHeight(TheText)) div 2, TheText);
end;
end;
function TRxCalendar.GetCellText(ACol, ARow: Integer): string;
var
DayNum: Integer;
begin
if ARow = 0 then { day names at tops of columns }
Result := ShortDayNames[(Ord(StartOfWeek) + ACol) mod 7 + 1]
else begin
DayNum := FMonthOffset + ACol + (ARow - 1) * 7;
if (DayNum < 1) or (DayNum > DaysThisMonth) then Result := ''
else Result := IntToStr(DayNum);
end;
end;
procedure TRxCalendar.KeyDown(var Key: Word; Shift: TShiftState);
begin
if Shift = [] then
case Key of
VK_LEFT, VK_SUBTRACT:
begin
if (Day > 1) then Day := Day - 1
else CalendarDate := CalendarDate - 1;
Exit;
end;
VK_RIGHT, VK_ADD:
begin
if (Day < DaysThisMonth) then Day := Day + 1
else CalendarDate := CalendarDate + 1;
Exit;
end
end;
inherited KeyDown(Key, Shift);
end;
procedure TRxCalendar.KeyPress(var Key: Char);
begin
if Key in ['T', 't'] then begin
CalendarDate := Trunc(Now);
Key := #0;
end;
inherited KeyPress(Key);
end;
function TRxCalendar.SelectCell(ACol, ARow: Longint): Boolean;
begin
if ((not FUpdating) and FReadOnly) or (CellText[ACol, ARow] = '') then
Result := False
else Result := inherited SelectCell(ACol, ARow);
end;
procedure TRxCalendar.SetCalendarDate(Value: TDateTime);
begin
if FDate <> Value then begin
FDate := Value;
UpdateCalendar;
Change;
end;
end;
function TRxCalendar.StoreCalendarDate: Boolean;
begin
Result := not FUseCurrentDate;
end;
function TRxCalendar.GetDateElement(Index: Integer): Integer;
var
AYear, AMonth, ADay: Word;
begin
DecodeDate(FDate, AYear, AMonth, ADay);
case Index of
1: Result := AYear;
2: Result := AMonth;
3: Result := ADay;
else Result := -1;
end;
end;
procedure TRxCalendar.SetDateElement(Index: Integer; Value: Integer);
var
AYear, AMonth, ADay: Word;
begin
if Value > 0 then begin
DecodeDate(FDate, AYear, AMonth, ADay);
case Index of
1: if AYear <> Value then AYear := Value else Exit;
2: if (Value <= 12) and (Value <> AMonth) then begin
AMonth := Value;
if ADay > DaysPerMonth(Year, Value) then
ADay := DaysPerMonth(Year, Value);
end else Exit;
3: if (Value <= DaysThisMonth) and (Value <> ADay) then
ADay := Value
else Exit;
else Exit;
end;
FDate := EncodeDate(AYear, AMonth, ADay);
FUseCurrentDate := False;
CalendarUpdate(Index = 3);
Change;
end;
end;
procedure TRxCalendar.SetWeekendColor(Value: TColor);
begin
if Value <> FWeekendColor then begin
FWeekendColor := Value;
Invalidate;
end;
end;
procedure TRxCalendar.SetWeekends(Value: TDaysOfWeek);
begin
if Value <> FWeekends then begin
FWeekends := Value;
UpdateCalendar;
end;
end;
function TRxCalendar.IsWeekend(ACol, ARow: Integer): Boolean;
begin
Result := TDayOfWeekName((Integer(StartOfWeek) + ACol) mod 7) in FWeekends;
end;
procedure TRxCalendar.SetStartOfWeek(Value: TDayOfWeekName);
begin
if Value <> FStartOfWeek then begin
FStartOfWeek := Value;
UpdateCalendar;
end;
end;
procedure TRxCalendar.SetUseCurrentDate(Value: Boolean);
begin
if Value <> FUseCurrentDate then begin
FUseCurrentDate := Value;
if Value then begin
FDate := Date; { use the current date, then }
UpdateCalendar;
end;
end;
end;
{ Given a value of 1 or -1, moves to Next or Prev month accordingly }
procedure TRxCalendar.ChangeMonth(Delta: Integer);
var
AYear, AMonth, ADay: Word;
NewDate: TDateTime;
CurDay: Integer;
begin
DecodeDate(FDate, AYear, AMonth, ADay);
CurDay := ADay;
if Delta > 0 then ADay := DaysPerMonth(AYear, AMonth)
else ADay := 1;
NewDate := EncodeDate(AYear, AMonth, ADay);
NewDate := NewDate + Delta;
DecodeDate(NewDate, AYear, AMonth, ADay);
if DaysPerMonth(AYear, AMonth) > CurDay then ADay := CurDay
else ADay := DaysPerMonth(AYear, AMonth);
CalendarDate := EncodeDate(AYear, AMonth, ADay);
end;
procedure TRxCalendar.PrevMonth;
begin
ChangeMonth(-1);
end;
procedure TRxCalendar.NextMonth;
begin
ChangeMonth(1);
end;
procedure TRxCalendar.NextYear;
begin
if IsLeapYear(Year) and (Month = 2) and (Day = 29) then Day := 28;
Year := Year + 1;
end;
procedure TRxCalendar.PrevYear;
begin
if IsLeapYear(Year) and (Month = 2) and (Day = 29) then Day := 28;
Year := Year - 1;
end;
procedure TRxCalendar.CalendarUpdate(DayOnly: Boolean);
var
AYear, AMonth, ADay: Word;
FirstDate: TDateTime;
begin
FUpdating := True;
try
DecodeDate(FDate, AYear, AMonth, ADay);
FirstDate := EncodeDate(AYear, AMonth, 1);
FMonthOffset := 2 - ((DayOfWeek(FirstDate) - Ord(StartOfWeek) + 7) mod 7);
{ day of week for 1st of month }
if FMonthOffset = 2 then FMonthOffset := -5;
MoveColRow((ADay - FMonthOffset) mod 7, (ADay - FMonthOffset) div 7 + 1,
False, False);
if DayOnly then Update else Invalidate;
finally
FUpdating := False;
end;
end;
procedure TRxCalendar.UpdateCalendar;
begin
CalendarUpdate(False);
end;
procedure TRxCalendar.WMSize(var Message: TWMSize);
var
GridLinesH, GridLinesW: Integer;
begin
GridLinesH := 6 * GridLineWidth;
if (goVertLine in Options) or (goFixedVertLine in Options) then
GridLinesW := 6 * GridLineWidth
else GridLinesW := 0;
DefaultColWidth := (Message.Width - GridLinesW) div 7;
DefaultRowHeight := (Message.Height - GridLinesH) div 7;
end;
{ TLocCalendar }
type
TLocCalendar = class(TRxCalendar)
private
procedure CMEnabledChanged(var Message: TMessage); message CM_ENABLEDCHANGED;
procedure CMParentColorChanged(var Message: TMessage); message CM_PARENTCOLORCHANGED;
protected
procedure CreateParams(var Params: TCreateParams); override;
procedure DrawCell(ACol, ARow: Longint; ARect: TRect; AState: TGridDrawState); override;
public
constructor Create(AOwner: TComponent); override;
procedure MouseToCell(X, Y: Integer; var ACol, ARow: Longint);
property GridLineWidth;
property DefaultColWidth;
property DefaultRowHeight;
end;
constructor TLocCalendar.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
ControlStyle := [csCaptureMouse, csClickEvents, csDoubleClicks];
{$IFDEF WIN32}
ControlStyle := ControlStyle + [csReplicatable];
{$ENDIF}
Ctl3D := False;
Enabled := False;
BorderStyle := bsNone;
ParentColor := True;
CalendarDate := Trunc(Now);
UseCurrentDate := False;
FixedColor := Self.Color;
Options := [goFixedHorzLine];
TabStop := False;
end;
procedure TLocCalendar.CMParentColorChanged(var Message: TMessage);
begin
inherited;
if ParentColor then FixedColor := Self.Color;
end;
procedure TLocCalendar.CMEnabledChanged(var Message: TMessage);
begin
if HandleAllocated and not (csDesigning in ComponentState) then
EnableWindow(Handle, True);
end;
procedure TLocCalendar.CreateParams(var Params: TCreateParams);
begin
inherited CreateParams(Params);
with Params do
Style := Style and not (WS_BORDER or WS_TABSTOP or WS_DISABLED);
end;
procedure TLocCalendar.MouseToCell(X, Y: Integer; var ACol, ARow: Longint);
var
Coord: TGridCoord;
begin
Coord := MouseCoord(X, Y);
ACol := Coord.X;
ARow := Coord.Y;
end;
procedure TLocCalendar.DrawCell(ACol, ARow: Longint; ARect: TRect;
AState: TGridDrawState);
var
D, M, Y: Word;
begin
inherited DrawCell(ACol, ARow, ARect, AState);
DecodeDate(CalendarDate, Y, M, D);
D := StrToIntDef(CellText[ACol, ARow], 0);
if (D > 0) and (D <= DaysPerMonth(Y, M)) then begin
if (EncodeDate(Y, M, D) = SysUtils.Date) then
Frame3D(Canvas, ARect, clBtnShadow, clBtnHighlight, 1);
end;
end;
{ TPopupCalendar }
type
TPopupCalendar = class(TPopupWindow)
private
FCalendar: TRxCalendar;
FTitleLabel: TLabel;
FFourDigitYear: Boolean;
FBtns: array[0..3] of TRxSpeedButton;
procedure CalendarMouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
procedure PrevMonthBtnClick(Sender: TObject);
procedure NextMonthBtnClick(Sender: TObject);
procedure PrevYearBtnClick(Sender: TObject);
procedure NextYearBtnClick(Sender: TObject);
procedure CalendarChange(Sender: TObject);
procedure TopPanelDblClick(Sender: TObject);
protected
procedure KeyDown(var Key: Word; Shift: TShiftState); override;
procedure KeyPress(var Key: Char); override;
{$IFDEF WIN32}
function GetValue: Variant; override;
procedure SetValue(const Value: Variant); override;
{$ELSE}
function GetValue: string; override;
procedure SetValue(const Value: string); override;
{$ENDIF}
public
constructor Create(AOwner: TComponent); override;
end;
function CreatePopupCalendar(AOwner: TComponent
{$IFDEF RX_D4}; ABiDiMode: TBiDiMode = bdLeftToRight {$ENDIF}): TWinControl;
begin
Result := TPopupCalendar.Create(AOwner);
if (AOwner <> nil) and not (csDesigning in AOwner.ComponentState) and
(Screen.PixelsPerInch <> 96) then
begin { scale to screen res }
Result.ScaleBy(Screen.PixelsPerInch, 96);
{ The ScaleBy method does not scale the font well, so set the
font back to the original info. }
TPopupCalendar(Result).FCalendar.ParentFont := True;
FontSetDefault(TPopupCalendar(Result).Font);
{$IFDEF RX_D4}
Result.BiDiMode := ABiDiMode;
{$ENDIF}
end;
end;
procedure SetupPopupCalendar(PopupCalendar: TWinControl;
AStartOfWeek: TDayOfWeekName; AWeekends: TDaysOfWeek;
AWeekendColor: TColor; BtnHints: TStrings; FourDigitYear: Boolean);
var
I: Integer;
begin
if (PopupCalendar = nil) or not (PopupCalendar is TPopupCalendar) then
Exit;
TPopupCalendar(PopupCalendar).FFourDigitYear := FourDigitYear;
if TPopupCalendar(PopupCalendar).FCalendar <> nil then begin
with TPopupCalendar(PopupCalendar).FCalendar do begin
StartOfWeek := AStartOfWeek;
WeekendColor := AWeekendColor;
Weekends := AWeekends;
end;
if (BtnHints <> nil) then
for I := 0 to Min(BtnHints.Count - 1, 3) do begin
if BtnHints[I] <> '' then
TPopupCalendar(PopupCalendar).FBtns[I].Hint := BtnHints[I];
end;
end;
end;
constructor TPopupCalendar.Create(AOwner: TComponent);
const
BtnSide = 14;
var
Control, BackPanel: TWinControl;
begin
inherited Create(AOwner);
FFourDigitYear := FourDigitYear;
Height := Max(PopupCalendarSize.Y, 120);
Width := Max(PopupCalendarSize.X, 180);
Color := clBtnFace;
FontSetDefault(Font);
if AOwner is TControl then ShowHint := TControl(AOwner).ShowHint
else ShowHint := True;
if (csDesigning in ComponentState) then Exit;
BackPanel := TPanel.Create(Self);
with BackPanel as TPanel do begin
Parent := Self;
Align := alClient;
ParentColor := True;
{$IFDEF WIN32}
ControlStyle := ControlStyle + [csReplicatable];
{$ENDIF}
end;
Control := TPanel.Create(Self);
with Control as TPanel do begin
Parent := BackPanel;
Align := alTop;
Width := Self.Width - 4;
Height := 18;
BevelOuter := bvNone;
ParentColor := True;
{$IFDEF WIN32}
ControlStyle := ControlStyle + [csReplicatable];
{$ENDIF}
end;
FCalendar := TLocCalendar.Create(Self);
with TLocCalendar(FCalendar) do begin
Parent := BackPanel;
Align := alClient;
OnChange := CalendarChange;
OnMouseUp := CalendarMouseUp;
end;
FBtns[0] := TRxTimerSpeedButton.Create(Self);
with FBtns[0] do begin
Parent := Control;
SetBounds(-1, -1, BtnSide, BtnSide);
Glyph.Handle := LoadBitmap(hInstance, SBtnGlyphs[0]);
OnClick := PrevYearBtnClick;
Hint := LoadStr(SPrevYear);
end;
FBtns[1] := TRxTimerSpeedButton.Create(Self);
with FBtns[1] do begin
Parent := Control;
SetBounds(BtnSide - 2, -1, BtnSide, BtnSide);
Glyph.Handle := LoadBitmap(hInstance, SBtnGlyphs[1]);
OnClick := PrevMonthBtnClick;
Hint := LoadStr(SPrevMonth);
end;
FTitleLabel := TLabel.Create(Self);
with FTitleLabel do begin
Parent := Control;
AutoSize := False;
Alignment := taCenter;
SetBounds(BtnSide * 2 + 1, 1, Control.Width - 4 * BtnSide - 2, 14);
Transparent := True;
OnDblClick := TopPanelDblClick;
{$IFDEF WIN32}
ControlStyle := ControlStyle + [csReplicatable];
{$ENDIF}
end;
FBtns[2] := TRxTimerSpeedButton.Create(Self);
with FBtns[2] do begin
Parent := Control;
SetBounds(Control.Width - 2 * BtnSide + 2, -1, BtnSide, BtnSide);
Glyph.Handle := LoadBitmap(hInstance, SBtnGlyphs[2]);
OnClick := NextMonthBtnClick;
Hint := LoadStr(SNextMonth);
end;
FBtns[3] := TRxTimerSpeedButton.Create(Self);
with FBtns[3] do begin
Parent := Control;
SetBounds(Control.Width - BtnSide + 1, -1, BtnSide, BtnSide);
Glyph.Handle := LoadBitmap(hInstance, SBtnGlyphs[3]);
OnClick := NextYearBtnClick;
Hint := LoadStr(SNextYear);
end;
end;
procedure TPopupCalendar.CalendarMouseUp(Sender: TObject; Button: TMouseButton;
Shift: TShiftState; X, Y: Integer);
var
Col, Row: Longint;
begin
if (Button = mbLeft) and (Shift = []) then begin
TLocCalendar(FCalendar).MouseToCell(X, Y, Col, Row);
if (Row > 0) and (FCalendar.CellText[Col, Row] <> '') then
CloseUp(True);
end;
end;
procedure TPopupCalendar.TopPanelDblClick(Sender: TObject);
begin
FCalendar.CalendarDate := Trunc(Now);
end;
procedure TPopupCalendar.KeyDown(var Key: Word; Shift: TShiftState);
begin
inherited KeyDown(Key, Shift);
if FCalendar <> nil then
case Key of
VK_NEXT:
begin
if ssCtrl in Shift then FCalendar.NextYear
else FCalendar.NextMonth;
end;
VK_PRIOR:
begin
if ssCtrl in Shift then FCalendar.PrevYear
else FCalendar.PrevMonth;
end;
else TLocCalendar(FCalendar).KeyDown(Key, Shift);
end;
end;
procedure TPopupCalendar.KeyPress(var Key: Char);
begin
inherited KeyPress(Key);
if (FCalendar <> nil) and (Key <> #0) then
FCalendar.KeyPress(Key);
end;
{$IFDEF WIN32}
function TPopupCalendar.GetValue: Variant;
begin
if (csDesigning in ComponentState) then
Result := VarFromDateTime(SysUtils.Date)
else
Result := VarFromDateTime(FCalendar.CalendarDate);
end;
procedure TPopupCalendar.SetValue(const Value: Variant);
begin
if not (csDesigning in ComponentState) then begin
try
if (Trim(ReplaceStr(VarToStr(Value), DateSeparator, '')) = '') or
VarIsNull(Value) or VarIsEmpty(Value) then
FCalendar.CalendarDate := VarToDateTime(SysUtils.Date)
else FCalendar.CalendarDate := VarToDateTime(Value);
CalendarChange(nil);
except
FCalendar.CalendarDate := VarToDateTime(SysUtils.Date);
end;
end;
end;
{$ELSE}
function TPopupCalendar.GetValue: string;
begin
if (csDesigning in ComponentState) then
Result := FormatDateTime(DefDateFormat(FFourDigitYear), SysUtils.Date)
else
Result := FormatDateTime(DefDateFormat(FFourDigitYear), FCalendar.CalendarDate);
end;
procedure TPopupCalendar.SetValue(const Value: string);
begin
if not (csDesigning in ComponentState) then begin
FCalendar.CalendarDate := StrToDateFmtDef(DefDateFormat(FFourDigitYear),
Value, SysUtils.Date);
CalendarChange(nil);
end;
end;
{$ENDIF}
procedure TPopupCalendar.PrevYearBtnClick(Sender: TObject);
begin
FCalendar.PrevYear;
end;
procedure TPopupCalendar.NextYearBtnClick(Sender: TObject);
begin
FCalendar.NextYear;
end;
procedure TPopupCalendar.PrevMonthBtnClick(Sender: TObject);
begin
FCalendar.PrevMonth;
end;
procedure TPopupCalendar.NextMonthBtnClick(Sender: TObject);
begin
FCalendar.NextMonth;
end;
procedure TPopupCalendar.CalendarChange(Sender: TObject);
begin
FTitleLabel.Caption := FormatDateTime('MMMM, YYYY', FCalendar.CalendarDate);
end;
{ TSelectDateDlg }
type
TSelectDateDlg = class(TForm)
Calendar: TRxCalendar;
TitleLabel: TLabel;
procedure PrevMonthBtnClick(Sender: TObject);
procedure NextMonthBtnClick(Sender: TObject);
procedure PrevYearBtnClick(Sender: TObject);
procedure NextYearBtnClick(Sender: TObject);
procedure CalendarChange(Sender: TObject);
procedure CalendarDblClick(Sender: TObject);
procedure TopPanelDblClick(Sender: TObject);
procedure FormKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
private
{ Private declarations }
FBtns: array[0..3] of TRxSpeedButton;
procedure SetDate(Date: TDateTime);
function GetDate: TDateTime;
public
{ Public declarations }
constructor Create(AOwner: TComponent); override;
property Date: TDateTime read GetDate write SetDate;
end;
constructor TSelectDateDlg.Create(AOwner: TComponent);
var
Control: TWinControl;
begin
{$IFDEF CBUILDER}
inherited CreateNew(AOwner, 0);
{$ELSE}
inherited CreateNew(AOwner);
{$ENDIF}
Caption := LoadStr(SDateDlgTitle);
{$IFDEF WIN32}
BorderStyle := bsToolWindow;
{$ELSE}
BorderStyle := bsDialog;
{$ENDIF}
BorderIcons := [biSystemMenu];
ClientHeight := 154;
ClientWidth := 222;
FontSetDefault(Font);
Color := clBtnFace;
Position := poScreenCenter;
ShowHint := True;
KeyPreview := True;
Control := TPanel.Create(Self);
with Control as TPanel do begin
Parent := Self;
SetBounds(0, 0, 222, 22);
Align := alTop;
BevelInner := bvLowered;
ParentColor := True;
ParentFont := True;
end;
TitleLabel := TLabel.Create(Self);
with TitleLabel do begin
Parent := Control;
SetBounds(35, 4, 152, 14);
Alignment := taCenter;
AutoSize := False;
Caption := '';
ParentFont := True;
Font.Color := clBlue;
Font.Style := [fsBold];
Transparent := True;
OnDblClick := TopPanelDblClick;
end;
FBtns[0] := TRxTimerSpeedButton.Create(Self);
with FBtns[0] do begin
Parent := Control;
SetBounds(3, 3, 16, 16);
Glyph.Handle := LoadBitmap(hInstance, SBtnGlyphs[0]);
OnClick := PrevYearBtnClick;
Hint := LoadStr(SPrevYear);
end;
FBtns[1] := TRxTimerSpeedButton.Create(Self);
with FBtns[1] do begin
Parent := Control;
SetBounds(18, 3, 16, 16);
Glyph.Handle := LoadBitmap(hInstance, SBtnGlyphs[1]);
OnClick := PrevMonthBtnClick;
Hint := LoadStr(SPrevMonth);
end;
FBtns[2] := TRxTimerSpeedButton.Create(Self);
with FBtns[2] do begin
Parent := Control;
SetBounds(188, 3, 16, 16);
Glyph.Handle := LoadBitmap(hInstance, SBtnGlyphs[2]);
OnClick := NextMonthBtnClick;
Hint := LoadStr(SNextMonth);
end;
FBtns[3] := TRxTimerSpeedButton.Create(Self);
with FBtns[3] do begin
Parent := Control;
SetBounds(203, 3, 16, 16);
Glyph.Handle := LoadBitmap(hInstance, SBtnGlyphs[3]);
OnClick := NextYearBtnClick;
Hint := LoadStr(SNextYear);
end;
Control := TPanel.Create(Self);
with Control as TPanel do begin
Parent := Self;
SetBounds(0, 133, 222, 21);
Align := alBottom;
BevelInner := bvNone;
BevelOuter := bvNone;
ParentFont := True;
ParentColor := True;
end;
with TButton.Create(Self) do begin
Parent := Control;
SetBounds(0, 0, 112, 21);
Caption := ResStr(SOKButton);
ModalResult := mrOk;
end;
with TButton.Create(Self) do begin
Parent := Control;
SetBounds(111, 0, 111, 21);
Caption := ResStr(SCancelButton);
ModalResult := mrCancel;
Cancel := True;
end;
Control := TPanel.Create(Self);
with Control as TPanel do begin
Parent := Self;
SetBounds(0, 22, 222, 111);
Align := alClient;
BevelInner := bvLowered;
ParentFont := True;
ParentColor := True;
end;
Calendar := TRxCalendar.Create(Self);
with Calendar do begin
Parent := Control;
Align := alClient;
ParentFont := True;
SetBounds(2, 2, 218, 113);
Color := clWhite;
TabOrder := 0;
UseCurrentDate := False;
OnChange := CalendarChange;
OnDblClick := CalendarDblClick;
end;
OnKeyDown := FormKeyDown;
Calendar.CalendarDate := Trunc(Now);
ActiveControl := Calendar;
end;
procedure TSelectDateDlg.SetDate(Date: TDateTime);
begin
if Date = NullDate then Date := SysUtils.Date;
try
Calendar.CalendarDate := Date;
CalendarChange(nil);
except
Calendar.CalendarDate := SysUtils.Date;
end;
end;
function TSelectDateDlg.GetDate: TDateTime;
begin
Result := Calendar.CalendarDate;
end;
procedure TSelectDateDlg.TopPanelDblClick(Sender: TObject);
begin
SetDate(Trunc(Now));
end;
procedure TSelectDateDlg.PrevYearBtnClick(Sender: TObject);
begin
Calendar.PrevYear;
end;
procedure TSelectDateDlg.NextYearBtnClick(Sender: TObject);
begin
Calendar.NextYear;
end;
procedure TSelectDateDlg.PrevMonthBtnClick(Sender: TObject);
begin
Calendar.PrevMonth;
end;
procedure TSelectDateDlg.NextMonthBtnClick(Sender: TObject);
begin
Calendar.NextMonth;
end;
procedure TSelectDateDlg.CalendarChange(Sender: TObject);
begin
TitleLabel.Caption := FormatDateTime('MMMM, YYYY', Calendar.CalendarDate);
end;
procedure TSelectDateDlg.CalendarDblClick(Sender: TObject);
begin
ModalResult := mrOK;
end;
procedure TSelectDateDlg.FormKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
case Key of
VK_RETURN: ModalResult := mrOK;
VK_ESCAPE: ModalResult := mrCancel;
VK_NEXT:
begin
if ssCtrl in Shift then Calendar.NextYear
else Calendar.NextMonth;
TitleLabel.Update;
end;
VK_PRIOR:
begin
if ssCtrl in Shift then Calendar.PrevYear
else Calendar.PrevMonth;
TitleLabel.Update;
end;
VK_TAB:
begin
if Shift = [ssShift] then Calendar.PrevMonth
else Calendar.NextMonth;
TitleLabel.Update;
end;
end; {case}
end;
{ SelectDate routines }
function CreateDateDialog(const DlgCaption: TCaption): TSelectDateDlg;
begin
Result := TSelectDateDlg.Create(Application);
try
if DlgCaption <> '' then Result.Caption := DlgCaption;
if Screen.PixelsPerInch <> 96 then begin { scale to screen res }
Result.ScaleBy(Screen.PixelsPerInch, 96);
{ The ScaleBy method does not scale the font well, so set the
font back to the original info. }
Result.Calendar.ParentFont := True;
FontSetDefault(Result.Font);
Result.Left := (Screen.Width div 2) - (Result.Width div 2);
Result.Top := (Screen.Height div 2) - (Result.Height div 2);
end;
except
Result.Free;
raise;
end;
end;
function PopupDate(var Date: TDateTime; Edit: TWinControl): Boolean;
var
D: TSelectDateDlg;
P: TPoint;
W, H, X, Y: Integer;
begin
Result := False;
D := CreateDateDialog('');
try
D.BorderIcons := [];
D.HandleNeeded;
D.Position := poDesigned;
W := D.Width;
H := D.Height;
P := (Edit.ClientOrigin);
Y := P.Y + Edit.Height - 1;
if (Y + H) > Screen.Height then Y := P.Y - H + 1;
if Y < 0 then Y := P.Y + Edit.Height - 1;
X := (P.X + Edit.Width) - W;
if X < 0 then X := P.X;
D.Left := X;
D.Top := Y;
D.Date := Date;
if D.ShowModal = mrOk then begin
Date := D.Date;
Result := True;
end;
finally
D.Free;
end;
end;
function SelectDate(var Date: TDateTime; const DlgCaption: TCaption;
AStartOfWeek: TDayOfWeekName; AWeekends: TDaysOfWeek;
AWeekendColor: TColor; BtnHints: TStrings): Boolean;
var
D: TSelectDateDlg;
I: Integer;
begin
Result := False;
D := CreateDateDialog(DlgCaption);
try
D.Date := Date;
with D.Calendar do begin
StartOfWeek := AStartOfWeek;
Weekends := AWeekends;
WeekendColor := AWeekendColor;
end;
if (BtnHints <> nil) then
for I := 0 to Min(BtnHints.Count - 1, 3) do begin
if BtnHints[I] <> '' then
D.FBtns[I].Hint := BtnHints[I];
end;
if D.ShowModal = mrOk then begin
Date := D.Date;
Result := True;
end;
finally
D.Free;
end;
end;
function SelectDateStr(var StrDate: string; const DlgCaption: TCaption;
AStartOfWeek: TDayOfWeekName; AWeekends: TDaysOfWeek;
AWeekendColor: TColor; BtnHints: TStrings): Boolean;
var
DateValue: TDateTime;
begin
if StrDate <> '' then begin
try
DateValue := StrToDateFmt(ShortDateFormat, StrDate);
except
DateValue := Date;
end;
end
else DateValue := Date;
Result := SelectDate(DateValue, DlgCaption, AStartOfWeek, AWeekends,
AWeekendColor, BtnHints);
if Result then StrDate := FormatDateTime(ShortDateFormat, DateValue);
end;
end.