Solución:
Pruebe NLDSideBar, un componente contenedor escrito por mí mismo que se puede contraer y alinear a lo largo del lado izquierdo o derecho de su padre.
Interfaz:
property Align: TSideBarAlign default alLeft;
property AutoHide: Boolean default False;
property Hint: String;
property MinWidth: Integer default DefWidth;
property OnAutoHideChanged: TNotifyEvent;
property OnHide: TNotifyEvent;
property PinButtonDownHint: String;
property PinButtonUpHint: String;
property PinButtonVisible: Boolean default True;
property Resizable: Boolean default True;
property SideButtonWidth: Integer default DefSideButtonWidth;
property Caption;
property Color default clBtnFace;
property Font;
property ParentColor default False;
property ParentFont;
property ParentShowHint;
property PopupMenu;
property TabOrder;
property TabStop;
O tal vez esta versión anterior que está animada. Libre de usar, libre de modificar.
Perdón por ser auto-promotora, pero creo que es una respuesta a la pregunta.
Terminamos construyendo nuestro propio control. No pudimos encontrar nada que funcionara como queríamos. Terminó no siendo tan difícil. Estoy seguro de que hay situaciones que no estamos manejando correctamente, pero eso nos está funcionando bien.
El siguiente código usa cxGroupBox porque necesitábamos que ese aspecto coincidiera con el resto de nuestra aplicación. Eso se puede cambiar por un GroupBox normal.
Estamos usando esto en dos lugares. En un caso, tenemos varios de estos paneles dentro de un Delphi Flow Panel estándar (no estoy seguro de qué versión se agregó). Cuando nuestro DynPanel colapsa, todo se mueve automáticamente hacia arriba y llena el espacio.
En el otro caso, tenemos una ventana que se divide entre una sección principal y una caja de herramientas. Los dos están separados por un divisor estándar. La ventana principal está configurada para alinearse con el cliente. Cuando nuestro panel se colapsa o se expande. el divisor mueve y expande automáticamente la sección principal.
Nunca logramos que funcionara el control del “contenedor”, por lo que los elementos que agrega al panel se pueden mover fuera de los límites que normalmente esperaría en un cuadro de grupo. Pero eso no nos causa ningún problema importante, así que simplemente lo dejamos. Esto tampoco tiene en cuenta los cambios de DPI en relación con el tamaño del botón. La leyenda se agrandará, pero el botón no.
unit DynPanel;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ExtCtrls, cxGroupBox;
const
DEFAULTBUTTONWIDTH = 16;
DEFAULTWIDTH = 161;
DEFAULTHEIGHT = 81;
cButtonPadding = 8;
cCollapsePadding = 3;
cCaptionPadding = ' ';
cCollapsedSize = DEFAULTBUTTONWIDTH + cCollapsePadding;
cAutoCollapseSize = DEFAULTBUTTONWIDTH + cButtonPadding;
type
TCollapseDirection = (cdUp, cdRight, cdLeft);
TMinDemension = cAutoCollapseSize..High(Integer);
TDynPanel = class(TPanel)
private
FGroupBox: TcxGroupBox;
FButtonPanel: TPanel;
FButtonImage: TImage;
FExpand: Boolean;
FOldHeight: Integer;
FOldWidth: Integer;
FCollapseDirection: TCollapseDirection;
FOrigGroupBoxCaption: String;
FAutoCollapseHeight: TMinDemension;
FAutoCollapseWidth: TMinDemension;
FButtonPadding: integer;
FCollapsePadding: integer;
FCollapsedSize: integer;
procedure SetExpand(Value: Boolean);
procedure SetGroupBoxCaption(Value: string);
procedure ButtonMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
procedure CMShowingChanged(var Message: TMessage); message CM_SHOWINGCHANGED;
procedure EnableControls(Value: Boolean);
procedure SetCollapseDirection(Value: TCollapseDirection);
procedure ConfigurePanel;
procedure SetMinHeight(Value: TMinDemension);
procedure SetMinWidth(Value: TMinDemension);
procedure UpdateImage();
protected
procedure Resize; override;
procedure ChangeScale(M, D: Integer); override;
public
constructor Create(AOwner: TComponent); override;
property OldHeight: Integer read FOldHeight write FOldHeight;
property OldWidth: Integer read FOldWidth write FOldWidth;
property GroupBox: TcxGroupBox read FGroupBox;
published
property Caption: string read FOrigGroupBoxCaption write SetGroupBoxCaption;
property Expand: Boolean read FExpand write SetExpand;
property BevelOuter default bvNone;
property CollapseDirection: TCollapseDirection read FCollapseDirection write SetCollapseDirection default cdUp;
property AutoCollapseHeight: TMinDemension read FAutoCollapseHeight write SetMinHeight default cAutoCollapseSize;
property AutoCollapseWidth: TMinDemension read FAutoCollapseWidth write SetMinWidth default cAutoCollapseSize;
end;
procedure Register;
implementation
$R 'ButtonImagesButtonImages.res' 'ButtonImagesButtonImages.rc'
uses cxEdit;
procedure Register;
begin
RegisterComponents('AgWare', [TDynPanel]);
end;
TDynPanel
TDynPanel.Create
---------------------------------------------------------------------------
constructor TDynPanel.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
Self.ControlStyle := ControlStyle - [csSetCaption];
Self.Width := DEFAULTWIDTH;
Self.Height := DEFAULTHEIGHT;
BevelOuter := bvNone;
FExpand := True;
FOldHeight := Self.Height;
FOldWidth := Self.Width;
FOrigGroupBoxCaption := 'AgDynPanel';
FCollapseDirection := cdUp;
FAutoCollapseHeight := cAutoCollapseSize;
FAutoCollapseWidth := cAutoCollapseSize;
FGroupBox := TcxGroupBox.Create(Self);
FGroupBox.Parent := Self;
FGroupBox.Align := alClient;
FGroupBox.Alignment := alTopLeft;
FButtonPanel := TPanel.Create(Self);
FButtonPanel.Parent := Self;
FButtonPanel.Top := 0;
FButtonPanel.Width := DEFAULTBUTTONWIDTH;
FButtonPanel.Height := DEFAULTBUTTONWIDTH;
FButtonPanel.Left := Width - DEFAULTBUTTONWIDTH - FButtonPadding;
FButtonPanel.OnMouseDown := ButtonMouseDown;
FButtonImage := TImage.Create(Self);
FButtonImage.Parent := FButtonPanel;
FButtonImage.Align := alClient;
FButtonImage.Stretch := false;
FButtonImage.Center := true;
FButtonImage.OnMouseDown := ButtonMouseDown;
UpdateImage;
// The click should also work for the entire top of the group box.
FGroupBox.OnMouseDown := ButtonMouseDown;
FGroupBox.Caption := FOrigGroupBoxCaption;
FGroupBox.Style.Font.Style := FGroupBox.Style.Font.Style + [fsBold];
FButtonPadding := cButtonPadding;
FCollapsePadding := cCollapsePadding;
FCollapsedSize := cCollapsedSize;
end;
TDynPanel.SetGroupBoxCaption
---------------------------------------------------------------------------
procedure TDynPanel.SetGroupBoxCaption(Value: String);
begin
FOrigGroupBoxCaption := Value;
ConfigurePanel;
end;
TDynPanel.SetMinHeight
---------------------------------------------------------------------------
procedure TDynPanel.SetMinHeight(Value: TMinDemension);
begin
if Value = FAutoCollapseHeight then
Exit; // >>----->
FAutoCollapseHeight := Value;
if Showing then
Resize;
end;
TDynPanel.SetMinWidth
---------------------------------------------------------------------------
procedure TDynPanel.SetMinWidth(Value: TMinDemension);
begin
if Value = FAutoCollapseWidth then
Exit; // >>----->
FAutoCollapseWidth := Value;
if Showing then
Resize;
end;
TDynPanel.ButtonMouseDown
---------------------------------------------------------------------------
procedure TDynPanel.ButtonMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
if Button mbLeft then
Exit; // >>----->
if ((FExpand = True) and (Y FCollapsePadding)) or
((FExpand = False) and (FCollapseDirection = cdLeft) and (X >----->
FExpand := Value;
//ConfigurePanel;
//--------------------------------------------------------------------------
// Set the group box size
//--------------------------------------------------------------------------
//
// I chose to do the resizing of the control here rather than in
// ConfigurePanel because if you do it there the SetBounds will call ReSize
// which will call ConfigurePanel again so that you would need to keep track
// of a boolean variable to determine if you are making recursive calls into
// ConfigurePanel. That is one reason. Another is that when the dfm values
// are streamed in and the properties get set you will resize the control
// before the actual Height and Width properties are set. This will cause
// bogus default values to be stored for FOldHeight and FOldWidth and when
// the control is displayed the dimensions will be wrong. If you size the
// control here then, on creation, Resize will not get called and the
// FOldHeight and FOldWidth values will not get saved off until
// CMShowingChanged will explicitly call ReSize after the dimensions are
// properly set. If you move this code into ConfigurePanel then when the
// caption is streamed in and set from the dfm then ConfigurePanel would get
// called, we would SetBounds there and then Resize would fire storing off the
// default invalid values for the FOld variables as mentioned above.
// Hope this makes sense. Leave the SetBounds calls here and make your life
// easier. :)
//--------------------------------------------------------------------------
// Changing to Expanded
if FExpand = True then
begin
// Up
if FCollapseDirection = cdUp then
SetBounds(Left, Top, Width, FOldHeight)
// Right
else if FCollapseDirection = cdRight then
SetBounds((Left + Width) - FOldWidth, Top, FOldWidth, Height)
// Left
else if FCollapseDirection = cdLeft then
SetBounds(Left, Top, FOldWidth, Height);
end
// Changing to Collapsed
else
begin
// Up
if FCollapseDirection = cdUp then
begin
// Reset the AutoCollapseHeight just to make sure we don't try to
// recollapse on resize.
if FAutoCollapseHeight FGroupBox) and
(Self.Controls[i] FButtonPanel) then
begin
Self.Controls[i].Enabled := Value;
Self.Controls[i].Visible := Value;
end;
end;
end;
TDynPanel.CMShowingChanged
---------------------------------------------------------------------------
procedure TDynPanel.CMShowingChanged(var Message: TMessage);
begin
inherited;
if Showing then
Resize;
end;
TDynPanel.Resize
---------------------------------------------------------------------------
procedure TDynPanel.Resize;
begin
if FExpand = True then
begin
if (FCollapseDirection = cdUp) and (Height FAutoCollapseHeight then
begin
FOldHeight := Height;
Expand := True;
end
else
Height := FCollapsedSize;
end
else if (FCollapseDirection = cdLeft) or (FCollapseDirection = cdRight) then
begin
if (Width > FAutoCollapseWidth) then
begin
FOldWidth := Width;
Expand := True;
end
else
Width := FCollapsedSize;
end;
end;
ConfigurePanel;
end;
TDynPanel.ChangeScale
---------------------------------------------------------------------------
procedure TDynPanel.ChangeScale(M, D: Integer);
begin
FAutoCollapseHeight := MulDiv(FAutoCollapseHeight, M, D);
FAutoCollapseWidth := MulDiv(FAutoCollapseWidth, M, D);
FButtonPadding := MulDiv(FButtonPadding, M, D);
FCollapsePadding := MulDiv(FCollapsePadding, M, D);
FCollapsedSize := MulDiv(FCollapsedSize, M, D);
FOldHeight := MulDiv(FOldHeight, M, D);
FOldWidth := MulDiv(FOldWidth, M, D);
// inherited will cause resize to be called. I need to update
// my internal values before that happens, otherwise I will resize based
// on the old values.
inherited;
end;
TDynPanel.SetCollapseDirection
---------------------------------------------------------------------------
procedure TDynPanel.SetCollapseDirection(Value: TCollapseDirection);
begin
if Value = FCollapseDirection then
Exit; // >>----->
FCollapseDirection := Value;
ConfigurePanel;
end;
TDynPanel.ConfigurePanel
---------------------------------------------------------------------------
procedure TDynPanel.ConfigurePanel;
begin
//--------------------------------------------------------------------------
// Set the group box style, caption alignment, caption, button position, and
// button image
//--------------------------------------------------------------------------
// Changing to Expanded
if FExpand = True then
begin
FGroupBox.Style.Color := clWhite;
// Up
if FCollapseDirection = cdUp then
begin
FGroupBox.Alignment := alTopLeft;
FGroupBox.Caption := FOrigGroupBoxCaption;
FButtonPanel.Top := 0;
FButtonPanel.Left := Width - FButtonPanel.Width - FButtonPadding;
end
// Right
else if FCollapseDirection = cdRight then
begin
FGroupBox.Alignment := alTopLeft;
FGroupBox.Caption := ' ' + FOrigGroupBoxCaption;
FButtonPanel.Top := 0;
FButtonPanel.Left := FButtonPadding;
end
// Left
else if FCollapseDirection = cdLeft then
begin
FGroupBox.Alignment := alTopLeft;
FGroupBox.Caption := FOrigGroupBoxCaption;
FButtonPanel.Top := 0;
FButtonPanel.Left := Width - FButtonPanel.Width - FButtonPadding;
end;
end
// Changing to Collapsed
else
begin
FGroupBox.Style.Color := clGradientActiveCaption;
// Up
if FCollapseDirection = cdUp then
begin
FGroupBox.Alignment := alTopLeft;
FGroupBox.Caption := FOrigGroupBoxCaption;
FButtonPanel.Top := 0;
FButtonPanel.Left := Width - FButtonPanel.Width - FButtonPadding;
end
// Right
else if FCollapseDirection = cdRight then
begin
FGroupBox.Alignment := alRightTop;
FGroupBox.Caption := ' ' + FOrigGroupBoxCaption;
FButtonPanel.Top := FButtonPadding;
FButtonPanel.Left := FCollapsePadding;
end
// Left
else if FCollapseDirection = cdLeft then
begin
FGroupBox.Alignment := alLeftTop;
FGroupBox.Caption := FOrigGroupBoxCaption + ' ';
FButtonPanel.Top := FButtonPadding;
FButtonPanel.Left := 0;
end;
end;
UpdateImage;
// Now draw the button and invalidate Self
Self.Invalidate;
end;
TDynPanel.UpdateImage
---------------------------------------------------------------------------
procedure TDynPanel.UpdateImage();
begin
case FCollapseDirection of
cdUp:
begin
if FExpand = true then
FButtonImage.Picture.Bitmap.LoadFromResourceName(HInstance, 'ButtonImageUp')
else
FButtonImage.Picture.Bitmap.LoadFromResourceName(HInstance, 'ButtonImageDown');
end;
cdLeft:
begin
if FExpand = true then
FButtonImage.Picture.Bitmap.LoadFromResourceName(HInstance, 'ButtonImageLeft')
else
FButtonImage.Picture.Bitmap.LoadFromResourceName(HInstance, 'ButtonImageRight');
end;
cdRight:
begin
if FExpand = true then
FButtonImage.Picture.Bitmap.LoadFromResourceName(HInstance, 'ButtonImageRight')
else
FButtonImage.Picture.Bitmap.LoadFromResourceName(HInstance, 'ButtonImageLeft');
end;
end;
end;
end.
Cerca de la izquierda
Cerca de la cima
La nueva versión de Delphi incluirá este tipo de paneles deslizantes (a través de la integración de FireMonkey, antes vgScene / dxScene). Solo tendrás que hacer clic en los apoyos de altura o posición y una opción permitirá crear una animación para esto, con varias opciones (tipo de interpolación, duración, etc.).
Puedes añadir valor a nuestra información participando con tu experiencia en las notas.
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