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{
*****************************************************************************
* QtWSSpin.pp *
* ----------- *
* *
* *
*****************************************************************************
*****************************************************************************
This file is part of the Lazarus Component Library (LCL)
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
}
unit QtWSSpin;
{$mode objfpc}{$H+}
interface
{$I qtdefines.inc}
uses
// Bindings
qt5,
qtwidgets,
// LCL
Spin, SysUtils, Controls, Classes, LCLType, LCLProc, LCLIntf, Forms, StdCtrls,
//RTL
Math,
// Widgetset
WsProc, WSSpin, WSLCLClasses;
type
{ TQtWSCustomFloatSpinEdit }
TQtWSCustomFloatSpinEdit = class(TWSCustomFloatSpinEdit)
private
protected
class procedure InternalUpdateControl(const ASpinWidget: TQtAbstractSpinBox;
const ACustomFloatSpinEdit: TCustomFloatSpinEdit);
published
class function CreateHandle(const AWinControl: TWinControl;
const AParams: TCreateParams): TLCLHandle; override;
class procedure UpdateControl(const ACustomFloatSpinEdit: TCustomFloatSpinEdit); override;
class function GetValue(const ACustomFloatSpinEdit: TCustomFloatSpinEdit): Double; override;
class procedure SetAlignment(const ACustomEdit: TCustomEdit; const AAlignment: TAlignment); override;
class procedure SetEditorEnabled(const ACustomFloatSpinEdit: TCustomFloatSpinEdit; AValue: Boolean); override;
class procedure SetReadOnly(const ACustomEdit: TCustomEdit; NewReadOnly: boolean); override;
(*TODO: seperation into properties instead of bulk update
class procedure SetIncrement(const ACustomFloatSpinEdit: TCustomFloatSpinEdit; NewIncrement: Double); virtual;
class procedure SetMinValue(const ACustomFloatSpinEdit: TCustomFloatSpinEdit; NewValue: Double); virtual;
class procedure SetMaxValue(const ACustomFloatSpinEdit: TCustomFloatSpinEdit; NewValue: Double); virtual;
class procedure SetValueEmpty(const ACustomFloatSpinEdit: TCustomFloatSpinEdit; NewEmpty: boolean); virtual;
*)
end;
implementation
{ TQtWSCustomFloatSpinEdit }
class procedure TQtWSCustomFloatSpinEdit.InternalUpdateControl(
const ASpinWidget: TQtAbstractSpinBox;
const ACustomFloatSpinEdit: TCustomFloatSpinEdit);
begin
ASpinWidget.BeginUpdate;
try
if ASpinWidget is TQtFloatSpinBox then
TQtFloatSpinBox(ASpinWidget).setDecimals(ACustomFloatSpinEdit.DecimalPlaces);
if (ACustomFloatSpinEdit.MaxValue > ACustomFloatSpinEdit.MinValue) then
begin
ASpinWidget.setMinimum(ACustomFloatSpinEdit.MinValue);
ASpinWidget.setMaximum(ACustomFloatSpinEdit.MaxValue);
end
else
begin
if ASpinWidget is TQtFloatSpinBox then
begin
ASpinWidget.setMinimum(-MaxDouble);
ASpinWidget.setMaximum(MaxDouble);
end else
begin
ASpinWidget.setMinimum(-MaxInt);
ASpinWidget.setMaximum(MaxInt);
end;
end;
ASpinWidget.setSingleStep(ACustomFloatSpinEdit.Increment);
finally
ASpinWidget.EndUpdate;
end;
// trigger OnChange of spin edits
ASpinWidget.setValue(ACustomFloatSpinEdit.Value);
end;
{------------------------------------------------------------------------------
Method: TQtWSCustomFloatSpinEdit.CreateHandle
Params: None
Returns: Nothing
------------------------------------------------------------------------------}
class function TQtWSCustomFloatSpinEdit.CreateHandle(const AWinControl: TWinControl;
const AParams: TCreateParams): TLCLHandle;
var
QtSpinBox: TQtAbstractSpinBox;
begin
// qt4 has two different QSpinBoxes, one is QSpinBox (integer), another is QDoubleSpinBox (double)
if TCustomFloatSpinEdit(AWinControl).DecimalPlaces > 0 then
QtSpinBox := TQtFloatSpinBox.Create(AWinControl, AParams)
else
QtSpinBox := TQtSpinBox.Create(AWinControl, AParams);
QtSpinBox.setBorder(TCustomFloatSpinEdit(AWinControl).BorderStyle = bsSingle);
InternalUpdateControl(QtSpinBox, TCustomFloatSpinEdit(AWinControl));
QtSpinBox.AttachEvents;
Result := TLCLHandle(QtSpinBox);
end;
class function TQtWSCustomFloatSpinEdit.GetValue(const ACustomFloatSpinEdit: TCustomFloatSpinEdit): Double;
begin
Result := TQtAbstractSpinBox(ACustomFloatSpinEdit.Handle).getValue;
end;
class procedure TQtWSCustomFloatSpinEdit.SetAlignment(
const ACustomEdit: TCustomEdit; const AAlignment: TAlignment);
begin
if not WSCheckHandleAllocated(ACustomEdit, 'SetAlignment') then
Exit;
TQtSpinBox(ACustomEdit.Handle).setAlignment(AlignmentMap[AAlignment]);
end;
class procedure TQtWSCustomFloatSpinEdit.SetEditorEnabled(
const ACustomFloatSpinEdit: TCustomFloatSpinEdit; AValue: Boolean);
var
NewRO: Boolean;
SpinWidget: TQtAbstractSpinBox;
LineEdit: QLineEditH;
begin
if not WSCheckHandleAllocated(ACustomFloatSpinEdit, 'SetEditorEnabled') then
Exit;
NewRO := ACustomFloatSpinEdit.ReadOnly or not AValue;
SpinWidget := TQtAbstractSpinBox(ACustomFloatSpinEdit.Handle);
LineEdit := SpinWidget.LineEdit;
QLineEdit_setReadOnly(LineEdit, NewRO);
end;
class procedure TQtWSCustomFloatSpinEdit.SetReadOnly(
const ACustomEdit: TCustomEdit; NewReadOnly: boolean);
var
Widget: TQtWidget;
QtEdit: IQtEdit;
begin
if not WSCheckHandleAllocated(ACustomEdit, 'SetReadOnly') then
Exit;
Widget := TQtWidget(ACustomEdit.Handle);
if Supports(Widget, IQtEdit, QtEdit) then
QtEdit.setReadOnly(NewReadOnly);
//if we set ReadOnly to False, the internal LineEdit will become ReadWrite as well, which may be unwanted.
if (not NewReadOnly) and (ACustomEdit is TCustomFloatSpinEdit) and (not TCustomFloatSpinEdit(ACustomEdit).EditorEnabled) then
SetEditorEnabled(TCustomFloatSpinEdit(ACustomEdit), False);
end;
class procedure TQtWSCustomFloatSpinEdit.UpdateControl(const ACustomFloatSpinEdit: TCustomFloatSpinEdit);
var
CurrentSpinWidget: TQtAbstractSpinBox;
begin
if not WSCheckHandleAllocated(ACustomFloatSpinEdit, 'UpdateControl') then
Exit;
CurrentSpinWidget := TQtAbstractSpinBox(ACustomFloatSpinEdit.Handle);
if ((ACustomFloatSpinEdit.DecimalPlaces > 0) and (CurrentSpinWidget is TQtSpinBox)) or
((ACustomFloatSpinEdit.DecimalPlaces = 0) and (CurrentSpinWidget is TQtFloatSpinBox)) then
RecreateWnd(ACustomFloatSpinEdit)
else
InternalUpdateControl(CurrentSpinWidget, ACustomFloatSpinEdit);
end;
end.
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