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{
*****************************************************************************
* Gtk3WSSpin.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 Gtk3WSSpin;
{$mode objfpc}{$H+}
{$I gtk3defines.inc}
interface
uses
// RTL, FCL, LCL
SysUtils, Math, Controls, LCLType, LCLProc, Spin, StdCtrls,
// Widgetset
gtk3widgets, Gtk3WSStdCtrls, WSLCLClasses, WSProc, WSSpin;
type
{ TGtk3WSCustomFloatSpinEdit }
TGtk3WSCustomFloatSpinEdit = class(TWSCustomFloatSpinEdit)
published
class function CreateHandle(const AWinControl: TWinControl; const AParams: TCreateParams): TLCLIntfHandle; override;
class procedure GetPreferredSize(const AWinControl: TWinControl;
var PreferredWidth, PreferredHeight: integer;
WithThemeSpace: Boolean); override;
class function GetSelStart(const ACustomEdit: TCustomEdit): integer; override;
class function GetSelLength(const ACustomEdit: TCustomEdit): integer; override;
class function GetValue(const ACustomFloatSpinEdit: TCustomFloatSpinEdit): Double; override;
class procedure SetSelStart(const ACustomEdit: TCustomEdit; NewStart: integer); override;
class procedure SetSelLength(const ACustomEdit: TCustomEdit; NewLength: integer); override;
class procedure SetReadOnly(const ACustomEdit: TCustomEdit; ReadOnly: boolean); override;
class procedure UpdateControl(const ACustomFloatSpinEdit: TCustomFloatSpinEdit); override;
end;
implementation
{ TGtk3WSCustomFloatSpinEdit }
class function TGtk3WSCustomFloatSpinEdit.CreateHandle(
const AWinControl: TWinControl; const AParams: TCreateParams): TLCLIntfHandle;
var
ASpin: TGtk3SpinEdit;
begin
ASpin := TGtk3SpinEdit.Create(AWinControl, AParams);
Result := TLCLIntfHandle(ASpin);
end;
class procedure TGtk3WSCustomFloatSpinEdit.GetPreferredSize(
const AWinControl: TWinControl; var PreferredWidth, PreferredHeight: integer;
WithThemeSpace: Boolean);
begin
if not WSCheckHandleAllocated(AWinControl, 'GetPreferredSize') then
Exit;
TGtk3SpinEdit(AWinControl.Handle).preferredSize(PreferredWidth, PreferredHeight, WithThemeSpace);
end;
class function TGtk3WSCustomFloatSpinEdit.GetSelStart(
const ACustomEdit: TCustomEdit): integer;
begin
Result := -1;
if not WSCheckHandleAllocated(ACustomEdit, 'GetSelStart') then
Exit;
Result := TGtk3Editable(ACustomEdit.Handle).getSelStart;
end;
class function TGtk3WSCustomFloatSpinEdit.GetSelLength(
const ACustomEdit: TCustomEdit): integer;
begin
Result := 0;
if not WSCheckHandleAllocated(ACustomEdit, 'GetSelLength') then
Exit;
Result := TGtk3Editable(ACustomEdit.Handle).getSelLength;
end;
class function TGtk3WSCustomFloatSpinEdit.GetValue(
const ACustomFloatSpinEdit: TCustomFloatSpinEdit): Double;
begin
Result := 0;
if not WSCheckHandleAllocated(ACustomFloatSpinEdit, 'GetValue') then
Exit;
Result := TGtk3SpinEdit(ACustomFloatSpinEdit.Handle).Value;
end;
class procedure TGtk3WSCustomFloatSpinEdit.SetSelStart(
const ACustomEdit: TCustomEdit; NewStart: integer);
begin
if not WSCheckHandleAllocated(ACustomEdit, 'SetSelStart') then
Exit;
TGtk3Editable(ACustomEdit.Handle).BeginUpdate;
TGtk3Editable(ACustomEdit.Handle).SetSelStart(NewStart);
TGtk3Editable(ACustomEdit.Handle).EndUpdate;
end;
class procedure TGtk3WSCustomFloatSpinEdit.SetSelLength(
const ACustomEdit: TCustomEdit; NewLength: integer);
begin
if not WSCheckHandleAllocated(ACustomEdit, 'SetSelLength') then
Exit;
TGtk3Editable(ACustomEdit.Handle).BeginUpdate;
TGtk3Editable(ACustomEdit.Handle).SetSelLength(NewLength);
TGtk3Editable(ACustomEdit.Handle).EndUpdate;
end;
class procedure TGtk3WSCustomFloatSpinEdit.SetReadOnly(
const ACustomEdit: TCustomEdit; ReadOnly: boolean);
begin
if not WSCheckHandleAllocated(ACustomEdit, 'SetReadOnly') then
Exit;
TGtk3Editable(ACustomEdit.Handle).BeginUpdate;
TGtk3Editable(ACustomEdit.Handle).ReadOnly := ReadOnly;
TGtk3Editable(ACustomEdit.Handle).EndUpdate;
end;
class procedure TGtk3WSCustomFloatSpinEdit.UpdateControl(
const ACustomFloatSpinEdit: TCustomFloatSpinEdit);
var
ASpin: TGtk3SpinEdit;
AMin: Double;
AMax: Double;
begin
if not WSCheckHandleAllocated(ACustomFloatSpinEdit, 'UpdateControl') then
Exit;
ASpin := TGtk3SpinEdit(ACustomFloatSpinEdit.Handle);
if ACustomFloatSpinEdit.MaxValue >= ACustomFloatSpinEdit.MinValue then
begin
AMin := ACustomFloatSpinEdit.MinValue;
AMax := ACustomFloatSpinEdit.MaxValue;
end else
begin
AMin := -MaxDouble;
AMax := MaxDouble;
end;
ASpin.BeginUpdate;
try
ASpin.SetRange(AMin, AMax);
ASpin.Numeric := ACustomFloatSpinEdit.DecimalPlaces > 0;
ASpin.NumDigits := ACustomFloatSpinEdit.DecimalPlaces;
ASpin.Step := ACustomFloatSpinEdit.Increment;
ASpin.Value := ACustomFloatSpinEdit.Value;
ASpin.ReadOnly := ACustomFloatSpinEdit.ReadOnly;
finally
ASpin.EndUpdate;
end;
end;
end.
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