unit TB97Tlbr;

{
  Toolbar97
  Copyright (C) 1998 by Jordan Russell

  TCustomToolbar97, TToolbar97, TToolbarSep97
}

interface

{$I TB97Ver.inc}

uses
  Windows, Messages, Classes, Controls, Graphics,
  TB97;

type
  { TCustomToolbar97 }

  TToolbarParams = record
    InitializeOrderByPosition, DesignOrderByPosition: Boolean;
  end;

  TCustomToolbar97 = class(TCustomToolWindow97)
  private
    FToolbarParams: TToolbarParams;
    FFloatingRightX: Integer;
    SizeData: Pointer;

    { Lists }
    SlaveInfo,         { List of slave controls. Items are pointers to TSlaveInfo's }
    GroupInfo,         { List of the control "groups". List items are pointers to TGroupInfo's }
    LineSeps,          { List of the Y locations of line separators. Items are casted in TLineSep's }
    OrderList: TList;  { List of the child controls, arranged using the current "OrderIndex" values }

    { Property access methods }
    function GetOrderIndex (Control: TControl): Integer;
    procedure SetFloatingWidth (Value: Integer);
    procedure SetOrderIndex (Control: TControl; Value: Integer);

    { Internal }
    procedure SetControlVisible (const Control: TControl;
      const LeftOrRight: Boolean);
    function ShouldControlBeVisible (const Control: TControl;
      const LeftOrRight: Boolean): Boolean;
    procedure FreeGroupInfo (const List: TList);
    procedure BuildGroupInfo (const List: TList; const TranslateSlave: Boolean;
      const OldDockType, NewDockType: TDockType);

    { Messages }
    procedure CMControlListChange (var Message: TCMControlListChange); message CM_CONTROLLISTCHANGE;
  protected
    property ToolbarParams: TToolbarParams read FToolbarParams;

    procedure Paint; override;

    function ChildControlTransparent (Ctl: TControl): Boolean; override;
    procedure GetParams (var Params: TToolWindowParams); override;
    procedure GetToolbarParams (var Params: TToolbarParams); dynamic;
    procedure ResizeBegin (HitTestValue: Integer); override;
    procedure ResizeTrack (var Rect: TRect; const OrigRect: TRect); override;
    procedure ResizeEnd (Accept: Boolean); override;

    procedure GetBarSize (var ASize: Integer; const DockType: TDockType); override;
    procedure GetMinimumSize (var AClientWidth, AClientHeight: Integer); override;
    procedure InitializeOrdering; override;
    function OrderControls (CanMoveControls: Boolean; PreviousDockType: TDockType;
      DockingTo: TDock97): TPoint; override;
  public
    property OrderIndex[Control: TControl]: Integer read GetOrderIndex write SetOrderIndex;
    property FloatingWidth: Integer read FFloatingRightX write SetFloatingWidth;

    constructor Create (AOwner: TComponent); override;
    destructor Destroy; override;
    procedure ReadPositionData (const ReadIntProc: TPositionReadIntProc;
      const ReadStringProc: TPositionReadStringProc; const ExtraData: Pointer); override;
    procedure WritePositionData (const WriteIntProc: TPositionWriteIntProc;
      const WriteStringProc: TPositionWriteStringProc; const ExtraData: Pointer); override;

    procedure SetSlaveControl (const ATopBottom, ALeftRight: TControl);
  end;

  { TToolbar97 }

  TToolbar97 = class(TCustomToolbar97)
  published
    property ActivateParent;
    property BorderStyle;
    property Caption;
    property Color;
    property CloseButton;
    property DefaultDock;
    property DockableTo;
    property DockedTo;
    property DockPos;
    property DockRow;
    property DragHandleStyle;
    property FullSize;
    property HideWhenInactive;
    property ParentShowHint;
    property PopupMenu;
    property ShowHint;
    property TabOrder;
    property Visible;

    property OnClose;
    property OnDragDrop;
    property OnDragOver;
    property OnMove;
    property OnRecreated;
    property OnRecreating;
    property OnDockChanged;
    property OnDockChanging;
    property OnDockChangingEx;
    property OnDockChangingHidden;
    property OnResize;
    property OnVisibleChanged;
  end;

  { TToolbarSep97 }

  TToolbarSepSize = 1..MaxInt;

  TToolbarSep97 = class(TGraphicControl)
  private
    FBlank: Boolean;
    FSizeHorz, FSizeVert: TToolbarSepSize;
    procedure SetBlank (Value: Boolean);
    procedure SetSizeHorz (Value: TToolbarSepSize);
    procedure SetSizeVert (Value: TToolbarSepSize);
  protected
    procedure MouseDown (Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
    procedure Paint; override;
    procedure SetParent (AParent: TWinControl); override;
  public
    constructor Create (AOwner: TComponent); override;
  published
    { These two properties don't need to be stored since it automatically gets
      resized based on the setting of SizeHorz and SizeVert }
    property Width stored False;
    property Height stored False;
    property Blank: Boolean read FBlank write SetBlank default False;
    property SizeHorz: TToolbarSepSize read FSizeHorz write SetSizeHorz default 6;
    property SizeVert: TToolbarSepSize read FSizeVert write SetSizeVert default 6;
    property Visible;
  end;

implementation

uses
  SysUtils, TB97Cmn, TB97Cnst;

const
  DefaultBarWidthHeight = 8;

  TopMarginNotDocked = 2;
  TopMargin: array[Boolean] of Integer = (TopMarginNotDocked, 0);
  BottomMarginNotDocked = 1;
  BottomMargin: array[Boolean] of Integer = (BottomMarginNotDocked, 0);
  LeftMarginNotDocked = 4;
  LeftMargin: array[Boolean] of Integer = (LeftMarginNotDocked, 0);
  RightMarginNotDocked = 4;
  RightMargin: array[Boolean] of Integer = (RightMarginNotDocked, 0);
  LineSpacing = 6;

  { Constants for registry values. Do not localize! }
  { TCustomToolbar97 specific }
  rvFloatRightX = 'FloatRightX';

type
  { Used internally by the TCustomToolbar97.Resize* procedures }
  PToolbar97SizeData = ^TToolbar97SizeData;
  TToolbar97SizeData = record
    HitTest: Integer;
    NewSizes: TList;  { List of valid new sizes. Items are casted into TSmallPoints }
    CurRightX: Integer;
    DisableSensCheck, OpSide: Boolean;
    SizeSens: Integer;
  end;

  { Used in TCustomToolbar97.GroupInfo lists }
  PGroupInfo = ^TGroupInfo;
  TGroupInfo = record
    GroupWidth,           { Width in pixels of the group, if all controls were
                            lined up left-to-right }
    GroupHeight: Integer; { Heights in pixels of the group, if all controls were
                            lined up top-to-bottom }
    Members: TList;
  end;

  { Used in TCustomToolbar97.SlaveInfo lists }
  PSlaveInfo = ^TSlaveInfo;
  TSlaveInfo = record
    LeftRight,
    TopBottom: TControl;
  end;

  { Used in TCustomToolbar97.LineSeps lists }
  TLineSep = packed record
    Y: SmallInt;
    Blank: Boolean;
    Unused: Boolean;
  end;

  { Use by CompareControls }
  PCompareExtra = ^TCompareExtra;
  TCompareExtra = record
    Toolbar: TCustomToolbar97;
    ComparePositions: Boolean;
    CurDockType: TDockType;
  end;


{ TCustomToolbar97 }

constructor TCustomToolbar97.Create (AOwner: TComponent);
begin
  inherited;
  GetToolbarParams (FToolbarParams);
  GroupInfo := TList.Create;
  SlaveInfo := TList.Create;
  LineSeps := TList.Create;
  OrderList := TList.Create;
end;

destructor TCustomToolbar97.Destroy;
var
  I: Integer;
begin
  OrderList.Free;
  LineSeps.Free;
  if Assigned(SlaveInfo) then begin
    for I := SlaveInfo.Count-1 downto 0 do
      FreeMem (SlaveInfo.Items[I]);
    SlaveInfo.Free;
  end;
  FreeGroupInfo (GroupInfo);
  GroupInfo.Free;
  inherited;
end;

procedure TCustomToolbar97.ReadPositionData (const ReadIntProc: TPositionReadIntProc;
  const ReadStringProc: TPositionReadStringProc; const ExtraData: Pointer);
begin
  inherited;
  FFloatingRightX := ReadIntProc(Name, rvFloatRightX, 0, ExtraData);
end;

procedure TCustomToolbar97.WritePositionData (const WriteIntProc: TPositionWriteIntProc;
  const WriteStringProc: TPositionWriteStringProc; const ExtraData: Pointer);
begin
  inherited;
  WriteIntProc (Name, rvFloatRightX, FFloatingRightX, ExtraData);
end;

procedure TCustomToolbar97.GetMinimumSize (var AClientWidth, AClientHeight: Integer);
begin
  AClientWidth := 0;
  AClientHeight := 0;
end;

function CompareControls (const Item1, Item2, ExtraData: Pointer): Integer; far;
begin
  with PCompareExtra(ExtraData)^ do
    if ComparePositions then begin
      if CurDockType <> dtLeftRight then
        Result := TControl(Item1).Left - TControl(Item2).Left
      else
        Result := TControl(Item1).Top - TControl(Item2).Top;
    end
    else
      with Toolbar.OrderList do
        Result := IndexOf(Item1) - IndexOf(Item2);
end;

procedure TCustomToolbar97.InitializeOrdering;
var
  Extra: TCompareExtra;
begin
  inherited;
  { Initialize order of items in OrderList }
  if ToolbarParams.InitializeOrderByPosition then begin
    with Extra do begin
      Toolbar := Self;
      ComparePositions := True;
      CurDockType := GetDockTypeOf(DockedTo);
    end;
    ListSortEx (OrderList, CompareControls, @Extra);
  end;
end;

procedure TCustomToolbar97.GetBarSize (var ASize: Integer; const DockType: TDockType);
var
  I: Integer;
begin
  ASize := DefaultBarWidthHeight;
  for I := 0 to ControlCount-1 do
    if not(Controls[I] is TToolbarSep97) then
      with Controls[I] do begin
        if ShouldControlBeVisible(Controls[I], DockType = dtLeftRight) then begin
          if DockType = dtLeftRight then begin
            if Width > ASize then ASize := Width;
          end
          else begin
            if Height > ASize then ASize := Height;
          end;
        end;
      end;
end;

procedure TCustomToolbar97.GetParams (var Params: TToolWindowParams);
begin
  inherited;
  with Params do begin
    CallAlignControls := False;
    ResizeEightCorner := False;
    ResizeClipCursor := False;
  end;
end;

procedure TCustomToolbar97.GetToolbarParams (var Params: TToolbarParams);
begin
  with Params do begin
    InitializeOrderByPosition := True;
    DesignOrderByPosition := True;
  end;
end;

procedure TCustomToolbar97.Paint;
var
  S: Integer;
begin
  inherited;
  { Long separators when not docked }
  if not Docked then
    for S := 0 to LineSeps.Count-1 do begin
      with TLineSep(LineSeps[S]) do begin
        if Blank then Continue;
        Canvas.Pen.Color := clBtnShadow;