Mark van Renswoude
eb63e27541
Added: resolving animation Added: Uname-IT painter Added: various options (auto-collapse, auto-select, etc)
1751 lines
49 KiB
ObjectPascal
1751 lines
49 KiB
ObjectPascal
{
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:: X2CLMenuBar is a generic group/items menu. Through the various painters,
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:: it can resemble styles such as the musikCube or BBox/Uname-IT menu bars.
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::
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:: Last changed: $Date$
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:: Revision: $Rev$
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:: Author: $Author$
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}
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unit X2CLMenuBar;
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interface
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uses
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Classes,
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Contnrs,
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Controls,
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Forms,
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Graphics,
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ImgList,
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Messages,
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Types,
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Windows;
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type
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// #ToDo1 (MvR) 19-3-2006: implement collection Update mechanisms
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// #ToDo1 (MvR) 19-3-2006: OnCollapsing/OnCollapse/expand events
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// #ToDo1 (MvR) 19-3-2006: AutoCollapse property
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// #ToDo1 (MvR) 19-3-2006: AutoSelectItem property or something
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// #ToDo1 (MvR) 19-3-2006: find a way to remember the selected item per
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// group, required for when AutoCollapse = True and
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// AutoSelectItem = True
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// #ToDo1 (MvR) 25-3-2006: various Select methods for key support
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// #ToDo1 (MvR) 27-3-2006: CacheSelectedItem-style property
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TX2MenuBarAnimatorClass = class of TX2MenuBarAnimator;
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TX2MenuBarAnimator = class;
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TX2CustomMenuBarPainterClass = class of TX2CustomMenuBarPainter;
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TX2CustomMenuBarPainter = class;
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TX2CustomMenuBarItem = class;
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TX2MenuBarItem = class;
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TX2MenuBarGroup = class;
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TX2CustomMenuBar = class;
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IX2MenuBarPainterObserver = interface
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['{22DE60C9-49A1-4E7D-B547-901BEDCC0FB7}']
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procedure PainterUpdate(Sender: TX2CustomMenuBarPainter);
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end;
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TX2MenuBarHitTest = record
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HitTestCode: Integer;
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Item: TX2CustomMenuBarItem;
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end;
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TX2MenuBarDrawState = (mdsHot, mdsSelected, mdsGroupHot, mdsGroupSelected);
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TX2MenuBarDrawStates = set of TX2MenuBarDrawState;
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TX2MenuBarAnimationStyle = (asNone, asSlide, asResolve);
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TX2MenuBarSpacingElement = (seBeforeGroupHeader, seAfterGroupHeader,
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seBeforeFirstItem, seAfterLastItem,
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seBeforeItem, seAfterItem);
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TX2MenuBarItemBoundsProc = procedure(Sender: TObject;
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Item: TX2CustomMenuBarItem;
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const MenuBounds: TRect;
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const ItemBounds: TRect;
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Data: Pointer;
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var Abort: Boolean) of object;
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{
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:$ Abstract animation class
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:: Descendants implement the animation-specific drawing code.
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}
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TX2MenuBarAnimator = class(TObject)
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private
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FAnimationTime: Cardinal;
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FExpanding: Boolean;
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FGroup: TX2MenuBarGroup;
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FMenuBar: TX2CustomMenuBar;
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FStartTime: Cardinal;
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FItemsBuffer: Graphics.TBitmap;
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FTerminated: Boolean;
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protected
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function GetTimeElapsed(): Cardinal; virtual;
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function GetHeight(): Integer; virtual;
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procedure SetExpanding(const Value: Boolean); virtual;
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procedure Terminate(); virtual;
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property ItemsBuffer: Graphics.TBitmap read FItemsBuffer;
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property MenuBar: TX2CustomMenuBar read FMenuBar write FMenuBar;
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property TimeElapsed: Cardinal read GetTimeElapsed;
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public
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constructor Create(AItemsBuffer: Graphics.TBitmap); virtual;
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destructor Destroy(); override;
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procedure Update(); virtual;
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procedure Draw(ACanvas: TCanvas; const ABounds: TRect); virtual; abstract;
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property AnimationTime: Cardinal read FAnimationTime write FAnimationTime;
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property Expanding: Boolean read FExpanding write SetExpanding;
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property Group: TX2MenuBarGroup read FGroup write FGroup;
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property Terminated: Boolean read FTerminated;
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property Height: Integer read GetHeight;
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end;
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{
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:$ Implements a sliding animation
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}
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TX2MenuBarSlideAnimator = class(TX2MenuBarAnimator)
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private
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FSlideHeight: Integer;
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protected
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function GetHeight(): Integer; override;
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public
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procedure Update(); override;
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procedure Draw(ACanvas: TCanvas; const ABounds: TRect); override;
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end;
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{
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:$ Implements a resolve animation
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}
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TX2MenuBarResolveAnimator = class(TX2MenuBarAnimator)
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private
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FItemsState: Graphics.TBitmap;
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FMask: Graphics.TBitmap;
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FPixels: TList;
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protected
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procedure SetExpanding(const Value: Boolean); override;
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property ItemsState: Graphics.TBitmap read FItemsState;
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property Mask: Graphics.TBitmap read FMask;
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public
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constructor Create(AItemsBuffer: Graphics.TBitmap); override;
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destructor Destroy(); override;
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procedure Update(); override;
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procedure Draw(ACanvas: TCanvas; const ABounds: TRect); override;
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end;
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{
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:$ Abstract painter class.
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:: Descendants must implement the actual drawing code.
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}
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TX2CustomMenuBarPainter = class(TComponent)
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private
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FAnimationStyle: TX2MenuBarAnimationStyle;
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FAnimationTime: Cardinal;
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FMenuBar: TX2CustomMenuBar;
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FObservers: TInterfaceList;
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function GetMenuBar(): TX2CustomMenuBar;
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protected
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procedure BeginPaint(const AMenuBar: TX2CustomMenuBar);
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procedure EndPaint();
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function ApplyMargins(const ABounds: TRect): TRect; virtual;
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function GetSpacing(AElement: TX2MenuBarSpacingElement): Integer; virtual;
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function GetGroupHeaderHeight(AGroup: TX2MenuBarGroup): Integer; virtual; abstract;
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function GetGroupHeight(AGroup: TX2MenuBarGroup): Integer; virtual;
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function GetItemHeight(AItem: TX2MenuBarItem): Integer; virtual; abstract;
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procedure DrawBackground(ACanvas: TCanvas; const ABounds: TRect); virtual; abstract;
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procedure DrawGroupHeader(ACanvas: TCanvas; AGroup: TX2MenuBarGroup; const ABounds: TRect; AState: TX2MenuBarDrawStates); virtual; abstract;
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procedure DrawItem(ACanvas: TCanvas; AItem: TX2MenuBarItem; const ABounds: TRect; AState: TX2MenuBarDrawStates); virtual; abstract;
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function GetAnimatorClass(): TX2MenuBarAnimatorClass; virtual;
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procedure FindHit(Sender: TObject; Item: TX2CustomMenuBarItem; const MenuBounds: TRect; const ItemBounds: TRect; Data: Pointer; var Abort: Boolean);
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procedure NotifyObservers();
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property MenuBar: TX2CustomMenuBar read GetMenuBar;
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protected
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property AnimationStyle: TX2MenuBarAnimationStyle read FAnimationStyle write FAnimationStyle;
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property AnimationTime: Cardinal read FAnimationTime write FAnimationTime;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy(); override;
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function HitTest(const APoint: TPoint): TX2MenuBarHitTest; overload; virtual;
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function HitTest(AX, AY: Integer): TX2MenuBarHitTest; overload;
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procedure AttachObserver(AObserver: IX2MenuBarPainterObserver);
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procedure DetachObserver(AObserver: IX2MenuBarPainterObserver);
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end;
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{
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:$ Base class for menu items and groups.
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}
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TX2CustomMenuBarItem = class(TCollectionItem)
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private
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FCaption: String;
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FData: TObject;
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FImageIndex: TImageIndex;
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FOwnsData: Boolean;
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protected
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function GetMenuBar(): TX2CustomMenuBar; virtual;
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procedure SetCaption(const Value: String); virtual;
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procedure SetData(const Value: TObject); virtual;
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procedure SetImageIndex(const Value: TImageIndex); virtual;
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public
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constructor Create(Collection: TCollection); override;
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destructor Destroy(); override;
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procedure Assign(Source: TPersistent); override;
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property Data: TObject read FData write SetData;
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property OwnsData: Boolean read FOwnsData write FOwnsData;
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property MenuBar: TX2CustomMenuBar read GetMenuBar;
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published
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property Caption: String read FCaption write SetCaption;
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property ImageIndex: TImageIndex read FImageIndex write SetImageIndex;
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end;
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{
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:$ Contains a single menu item.
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}
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TX2MenuBarItem = class(TX2CustomMenuBarItem)
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private
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function GetGroup(): TX2MenuBarGroup;
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public
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property Group: TX2MenuBarGroup read GetGroup;
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end;
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{
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:$ Manages a collection of menu items.
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}
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TX2MenuBarItems = class(TOwnedCollection)
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private
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function GetItem(Index: Integer): TX2MenuBarItem;
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procedure SetItem(Index: Integer; const Value: TX2MenuBarItem);
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public
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constructor Create(AOwner: TPersistent);
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function Add(const ACaption: TCaption = ''): TX2MenuBarItem;
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property Items[Index: Integer]: TX2MenuBarItem read GetItem write SetItem; default;
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end;
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{
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:$ Contains a single menu group.
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}
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TX2MenuBarGroup = class(TX2CustomMenuBarItem)
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private
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FExpanded: Boolean;
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FItems: TX2MenuBarItems;
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FSelectedItem: Integer;
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function GetSelectedItem(): Integer;
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procedure SetExpanded(const Value: Boolean);
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procedure SetItems(const Value: TX2MenuBarItems);
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protected
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procedure InternalSetExpanded(const Value: Boolean);
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property SelectedItem: Integer read GetSelectedItem write FSelectedItem;
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public
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constructor Create(Collection: TCollection); override;
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destructor Destroy(); override;
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procedure Assign(Source: TPersistent); override;
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published
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property Expanded: Boolean read FExpanded write SetExpanded;
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property Items: TX2MenuBarItems read FItems write SetItems;
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end;
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{
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:$ Manages a collection of menu groups.
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}
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TX2MenuBarGroups = class(TOwnedCollection)
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private
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function GetItem(Index: Integer): TX2MenuBarGroup;
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procedure SetItem(Index: Integer; const Value: TX2MenuBarGroup);
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public
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constructor Create(AOwner: TPersistent);
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function Add(const ACaption: TCaption = ''): TX2MenuBarGroup;
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property Items[Index: Integer]: TX2MenuBarGroup read GetItem write SetItem; default;
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end;
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TX2MenuBarOption = (mboAutoCollapse, { Allow only a single group to be expanded }
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mboAutoSelectItem, { Always select an item when expanding a group }
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mboAllowCollapseAll); { Allow all groups to be collapsed }
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TX2MenuBarOptions = set of TX2MenuBarOption;
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{
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:$ Implements the menu bar.
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:: The menu bar is the visual container for the menu. It manages the groups
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:: and items, and implements the switching between menu items. It does not
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:: paint itself, instead it delegates this to it's linked Painter.
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}
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TX2CustomMenuBar = class(TCustomControl, IX2MenuBarPainterObserver)
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private
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FAnimator: TX2MenuBarAnimator;
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FBorderStyle: TBorderStyle;
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FExpandingGroups: TStringList;
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FGroups: TX2MenuBarGroups;
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FHotItem: TX2CustomMenuBarItem;
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FImageList: TCustomImageList;
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FLastMousePos: TPoint;
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FOptions: TX2MenuBarOptions;
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FPainter: TX2CustomMenuBarPainter;
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FSelectedItem: TX2CustomMenuBarItem;
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procedure SetOptions(const Value: TX2MenuBarOptions);
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procedure SetBorderStyle(const Value: TBorderStyle);
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procedure SetGroups(const Value: TX2MenuBarGroups);
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procedure SetImageList(const Value: TCustomImageList);
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protected
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procedure CreateParams(var Params: TCreateParams); override;
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procedure Notification(AComponent: TComponent; Operation: TOperation); override;
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procedure PainterUpdate(Sender: TX2CustomMenuBarPainter);
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procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
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procedure MouseMove(Shift: TShiftState; X, Y: Integer); override;
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// procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override;
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procedure CMMouseLeave(var Message: TMessage); message CM_MOUSELEAVE;
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procedure TestMousePos(); virtual;
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protected
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procedure SetPainter(const Value: TX2CustomMenuBarPainter); virtual;
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procedure WMEraseBkgnd(var Msg: TWMEraseBkgnd); message WM_ERASEBKGND;
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procedure Paint(); override;
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function GetDrawState(AItem: TX2CustomMenuBarItem): TX2MenuBarDrawStates;
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procedure DrawMenu(ACanvas: TCanvas; const ABounds: TRect); virtual;
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procedure DrawMenuItem(Sender: TObject; Item: TX2CustomMenuBarItem; const MenuBounds, ItemBounds: TRect; Data: Pointer; var Abort: Boolean); virtual;
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procedure DrawMenuItems(ACanvas: TCanvas; AGroup: TX2MenuBarGroup; const ABounds: TRect); virtual;
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procedure DrawNoPainter(ACanvas: TCanvas; const ABounds: TRect); virtual;
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function IterateItemBounds(ACallback: TX2MenuBarItemBoundsProc; AData: Pointer = nil): TX2CustomMenuBarItem;
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function AllowInteraction(): Boolean; virtual;
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procedure AutoCollapse(AGroup: TX2MenuBarGroup);
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procedure AutoSelectItem(AGroup: TX2MenuBarGroup);
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property Animator: TX2MenuBarAnimator read FAnimator write FAnimator;
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property BorderStyle: TBorderStyle read FBorderStyle write SetBorderStyle default bsNone;
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property Options: TX2MenuBarOptions read FOptions write SetOptions;
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protected
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procedure DoExpand(AGroup: TX2MenuBarGroup; AExpanding: Boolean);
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procedure DoExpandedChanging(AGroup: TX2MenuBarGroup; AExpanding: Boolean); virtual;
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procedure DoExpandedChanged(AGroup: TX2MenuBarGroup); virtual;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy(); override;
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function HitTest(const APoint: TPoint): TX2MenuBarHitTest; overload;
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function HitTest(AX, AY: Integer): TX2MenuBarHitTest; overload;
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property Groups: TX2MenuBarGroups read FGroups write SetGroups;
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property ImageList: TCustomImageList read FImageList write SetImageList;
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property Painter: TX2CustomMenuBarPainter read FPainter write SetPainter;
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end;
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{
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:$ Exposes the menu bar's published properties.
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}
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TX2MenuBar = class(TX2CustomMenuBar)
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published
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property Align;
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property BevelEdges;
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property BevelInner;
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property BevelKind;
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property BevelOuter;
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property BorderStyle;
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property BorderWidth;
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property Groups;
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property ImageList;
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property OnClick;
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property OnDblClick;
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property OnEnter;
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property OnExit;
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property OnMouseActivate;
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property OnMouseDown;
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property OnMouseEnter;
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property OnMouseLeave;
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property OnMouseMove;
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property OnMouseUp;
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property OnResize;
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property Options;
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property Painter;
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end;
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{
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:$ Provides a wrapper for the DrawText API.
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}
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TDrawTextClipStyle = (csNone, csEllipsis, csPathEllipsis);
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procedure DrawText(ACanvas: TCanvas; const AText: String;
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const ABounds: TRect;
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AHorzAlignment: TAlignment = taLeftJustify;
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AVertAlignment: TVerticalAlignment = taVerticalCenter;
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AMultiLine: Boolean = False;
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AClipStyle: TDrawTextClipStyle = csNone);
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const
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{ HitTest Codes }
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htUnknown = 0;
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htBackground = 1;
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htGroup = 2;
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htItem = 3;
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type
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PRGBArray = ^TRGBArray;
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TRGBArray = array[Word] of TRGBTriple;
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PRGBAArray = ^TRGBAArray;
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TRGBAArray = array[Word] of TRGBQuad;
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implementation
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uses
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SysUtils;
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const
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DefaultAnimationStyle = asSlide;
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DefaultAnimationTime = 250;
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SDefaultItemCaption = 'Menu Item';
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SDefaultGroupCaption = 'Group';
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SNoPainter = 'Painter property not set';
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{ DrawText wrapper }
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procedure DrawText(ACanvas: TCanvas; const AText: String;
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const ABounds: TRect; AHorzAlignment: TAlignment;
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AVertAlignment: TVerticalAlignment;
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AMultiLine: Boolean; AClipStyle: TDrawTextClipStyle);
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const
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HorzAlignmentFlags: array[TAlignment] of Cardinal =
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(DT_LEFT, DT_RIGHT, DT_CENTER);
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VertAlignmentFlags: array[TVerticalAlignment] of Cardinal =
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(DT_TOP, DT_BOTTOM, DT_VCENTER);
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MultiLineFlags: array[Boolean] of Cardinal =
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(DT_SINGLELINE, 0);
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ClipStyleFlags: array[TDrawTextClipStyle] of Cardinal =
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(0, DT_END_ELLIPSIS, DT_PATH_ELLIPSIS);
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var
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flags: Cardinal;
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bounds: TRect;
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begin
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flags := HorzAlignmentFlags[AHorzAlignment] or
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VertAlignmentFlags[AVertAlignment] or
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MultiLineFlags[AMultiLine] or
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ClipStyleFlags[AClipStyle];
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if AMultiLine and (AClipStyle <> csNone) then
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flags := flags or DT_EDITCONTROL;
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bounds := ABounds;
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Windows.DrawText(ACanvas.Handle, PChar(AText), Length(AText), bounds, flags);
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end;
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{ TX2CustomMenuBarPainter }
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constructor TX2CustomMenuBarPainter.Create(AOwner: TComponent);
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begin
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inherited;
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FAnimationStyle := DefaultAnimationStyle;
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FAnimationTime := DefaultAnimationTime;
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if AOwner is TX2CustomMenuBar then
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FMenuBar := TX2CustomMenuBar(AOwner);
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end;
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destructor TX2CustomMenuBarPainter.Destroy();
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begin
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FreeAndNil(FObservers);
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inherited;
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end;
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procedure TX2CustomMenuBarPainter.AttachObserver(AObserver: IX2MenuBarPainterObserver);
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begin
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if not Assigned(FObservers) then
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FObservers := TInterfaceList.Create();
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if FObservers.IndexOf(AObserver) = -1 then
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FObservers.Add(AObserver);
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end;
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procedure TX2CustomMenuBarPainter.DetachObserver(AObserver: IX2MenuBarPainterObserver);
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begin
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if Assigned(FObservers) then
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FObservers.Remove(AObserver);
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end;
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procedure TX2CustomMenuBarPainter.BeginPaint(const AMenuBar: TX2CustomMenuBar);
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begin
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Assert(not Assigned(FMenuBar), 'BeginPaint already called');
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FMenuBar := AMenuBar;
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end;
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procedure TX2CustomMenuBarPainter.EndPaint();
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begin
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Assert(Assigned(FMenuBar), 'EndPaint without BeginPaint');
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FMenuBar := nil;
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end;
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procedure TX2CustomMenuBarPainter.NotifyObservers();
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var
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observerIndex: Integer;
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begin
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if Assigned(FObservers) then
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for observerIndex := 0 to Pred(FObservers.Count) do
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(FObservers[observerIndex] as IX2MenuBarPainterObserver).PainterUpdate(Self);
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|
end;
|
|
|
|
|
|
function TX2CustomMenuBarPainter.ApplyMargins(const ABounds: TRect): TRect;
|
|
begin
|
|
Result := ABounds;
|
|
end;
|
|
|
|
function TX2CustomMenuBarPainter.GetGroupHeight(AGroup: TX2MenuBarGroup): Integer;
|
|
var
|
|
itemIndex: Integer;
|
|
|
|
begin
|
|
Result := 0;
|
|
for itemIndex := 0 to Pred(AGroup.Items.Count) do
|
|
Inc(Result, GetItemHeight(AGroup.Items[itemIndex]));
|
|
end;
|
|
|
|
|
|
function TX2CustomMenuBarPainter.GetAnimatorClass(): TX2MenuBarAnimatorClass;
|
|
begin
|
|
Result := nil;
|
|
|
|
case AnimationStyle of
|
|
asSlide: Result := TX2MenuBarSlideAnimator;
|
|
asResolve: Result := TX2MenuBarResolveAnimator;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TX2CustomMenuBarPainter.FindHit(Sender: TObject; Item: TX2CustomMenuBarItem; const MenuBounds, ItemBounds: TRect; Data: Pointer; var Abort: Boolean);
|
|
var
|
|
hitPoint: PPoint;
|
|
|
|
begin
|
|
hitPoint := Data;
|
|
Abort := PtInRect(ItemBounds, hitPoint^);
|
|
end;
|
|
|
|
function TX2CustomMenuBarPainter.HitTest(const APoint: TPoint): TX2MenuBarHitTest;
|
|
var
|
|
hitPoint: TPoint;
|
|
|
|
begin
|
|
hitPoint := APoint;
|
|
Result.HitTestCode := htUnknown;
|
|
Result.Item := MenuBar.IterateItemBounds(FindHit, @hitPoint);
|
|
|
|
if Assigned(Result.Item) then
|
|
if Result.Item is TX2MenuBarGroup then
|
|
Result.HitTestCode := htGroup
|
|
else if Result.Item is TX2MenuBarItem then
|
|
Result.HitTestCode := htItem;
|
|
end;
|
|
|
|
function TX2CustomMenuBarPainter.HitTest(AX, AY: Integer): TX2MenuBarHitTest;
|
|
begin
|
|
Result := HitTest(Point(AX, AY));
|
|
end;
|
|
|
|
|
|
function TX2CustomMenuBarPainter.GetMenuBar(): TX2CustomMenuBar;
|
|
begin
|
|
Assert(Assigned(FMenuBar), 'BeginPaint not called');
|
|
Result := FMenuBar;
|
|
end;
|
|
|
|
|
|
function TX2CustomMenuBarPainter.GetSpacing(AElement: TX2MenuBarSpacingElement): Integer;
|
|
begin
|
|
Result := 0;
|
|
end;
|
|
|
|
{ TX2MenuBarAnimator }
|
|
constructor TX2MenuBarAnimator.Create(AItemsBuffer: Graphics.TBitmap);
|
|
begin
|
|
inherited Create();
|
|
|
|
FStartTime := GetTickCount();
|
|
FItemsBuffer := Graphics.TBitmap.Create();
|
|
FItemsBuffer.Assign(AItemsBuffer);
|
|
end;
|
|
|
|
destructor TX2MenuBarAnimator.Destroy();
|
|
begin
|
|
FreeAndNil(FItemsBuffer);
|
|
|
|
inherited;
|
|
end;
|
|
|
|
|
|
function TX2MenuBarAnimator.GetHeight(): Integer;
|
|
begin
|
|
Result := ItemsBuffer.Height;
|
|
end;
|
|
|
|
function TX2MenuBarAnimator.GetTimeElapsed(): Cardinal;
|
|
var
|
|
currentTime: Cardinal;
|
|
|
|
begin
|
|
currentTime := GetTickCount();
|
|
Result := currentTime - FStartTime;
|
|
|
|
if currentTime < FStartTime then
|
|
Inc(Result, High(Cardinal));
|
|
end;
|
|
|
|
procedure TX2MenuBarAnimator.SetExpanding(const Value: Boolean);
|
|
begin
|
|
FExpanding := Value;
|
|
end;
|
|
|
|
|
|
procedure TX2MenuBarAnimator.Terminate();
|
|
begin
|
|
FTerminated := True;
|
|
end;
|
|
|
|
|
|
procedure TX2MenuBarAnimator.Update();
|
|
begin
|
|
end;
|
|
|
|
|
|
{ TX2MenuBarSlideAnimator }
|
|
//function TX2MenuBarSlideAnimator.PrepareHitPoint(APoint: TPoint): TPoint;
|
|
//begin
|
|
// Result := inherited PrepareHitPoint(APoint);
|
|
//
|
|
// { While expanding / collapsing, Group.Expanded has already changed. HitTest
|
|
// uses this data to determine if items should be taken into account. We must
|
|
// compensate for that while sliding. }
|
|
// if Expanding then
|
|
// begin
|
|
// if Result.Y > (FSlidePos + FSlideHeight) then
|
|
// Inc(Result.Y, ItemsBuffer.Height - FSlideHeight);
|
|
// end
|
|
// else
|
|
// if Result.Y >= FSlidePos then
|
|
// if Result.Y <= FSlidePos + FSlideHeight then
|
|
// Result.Y := -1
|
|
// else
|
|
// Dec(Result.Y, FSlideHeight);
|
|
//end;
|
|
|
|
function TX2MenuBarSlideAnimator.GetHeight(): Integer;
|
|
begin
|
|
Result := FSlideHeight;
|
|
end;
|
|
|
|
procedure TX2MenuBarSlideAnimator.Update();
|
|
var
|
|
elapsed: Cardinal;
|
|
|
|
begin
|
|
elapsed := TimeElapsed;
|
|
FSlideHeight := Trunc((elapsed / AnimationTime) * ItemsBuffer.Height);
|
|
if not Expanding then
|
|
FSlideHeight := ItemsBuffer.Height - FSlideHeight;
|
|
|
|
if FSlideHeight > ItemsBuffer.Height then
|
|
FSlideHeight := ItemsBuffer.Height
|
|
else if FSlideHeight < 0 then
|
|
FSlideHeight := 0;
|
|
|
|
if elapsed >= AnimationTime then
|
|
Terminate();
|
|
end;
|
|
|
|
procedure TX2MenuBarSlideAnimator.Draw(ACanvas: TCanvas; const ABounds: TRect);
|
|
var
|
|
sourceRect: TRect;
|
|
destRect: TRect;
|
|
|
|
begin
|
|
sourceRect := Rect(0, 0, ItemsBuffer.Width, FSlideHeight);
|
|
destRect := ABounds;
|
|
destRect.Bottom := destRect.Top + FSlideHeight;
|
|
ACanvas.CopyRect(destRect, ItemsBuffer.Canvas, sourceRect);
|
|
end;
|
|
|
|
|
|
{ TX2MenuBarResolveAnimator }
|
|
constructor TX2MenuBarResolveAnimator.Create(AItemsBuffer: Graphics.TBitmap);
|
|
var
|
|
pixelIndex: Integer;
|
|
|
|
begin
|
|
inherited;
|
|
|
|
{ The bitmaps need to be 32-bits since we'll be accessing the scanlines as
|
|
one big array, not by using Scanline on each row. In 24-bit mode, the
|
|
scanlines are still aligned on a 32-bits boundary, thus causing problems. }
|
|
ItemsBuffer.PixelFormat := pf32bit;
|
|
|
|
FMask := Graphics.TBitmap.Create();
|
|
FMask.PixelFormat := pf32bit;
|
|
FMask.Width := AItemsBuffer.Width;
|
|
FMask.Height := AItemsBuffer.Height;
|
|
|
|
FItemsState := Graphics.TBitmap.Create();
|
|
FItemsState.PixelFormat := pf32bit;
|
|
FItemsState.Width := AItemsBuffer.Width;
|
|
FItemsState.Height := AItemsBuffer.Height;
|
|
|
|
{ Prepare an array of pixel indices which will be used to pick random
|
|
unique pixels in the Update method. }
|
|
FPixels := TList.Create();
|
|
FPixels.Count := AItemsBuffer.Width * AItemsBuffer.Height;
|
|
|
|
for pixelIndex := 0 to Pred(FPixels.Count) do
|
|
FPixels[pixelIndex] := Pointer(pixelIndex);
|
|
|
|
if RandSeed = 0 then
|
|
Randomize();
|
|
end;
|
|
|
|
destructor TX2MenuBarResolveAnimator.Destroy();
|
|
begin
|
|
FreeAndNil(FItemsState);
|
|
FreeAndNil(FMask);
|
|
|
|
inherited;
|
|
end;
|
|
|
|
|
|
procedure TX2MenuBarResolveAnimator.Update();
|
|
function GetScanlinePointer(ABitmap: Graphics.TBitmap): Pointer;
|
|
var
|
|
firstScanline: Pointer;
|
|
lastScanline: Pointer;
|
|
|
|
begin
|
|
{ Most bitmaps are bottom-up, so Scanline[0] actually returns the
|
|
last physical row in memory. Check for this condition. Order of
|
|
scanlines is not important for this effect. }
|
|
firstScanline := ABitmap.ScanLine[0];
|
|
lastScanline := ABitmap.ScanLine[Pred(ABitmap.Height)];
|
|
|
|
if Cardinal(firstScanline) > Cardinal(lastScanline) then
|
|
Result := lastScanline
|
|
else
|
|
Result := firstScanline;
|
|
end;
|
|
|
|
const
|
|
RGBBlack: TRGBQuad = (rgbBlue: 0;
|
|
rgbGreen: 0;
|
|
rgbRed: 0;
|
|
rgbReserved: 0);
|
|
|
|
RGBWhite: TRGBQuad = (rgbBlue: 255;
|
|
rgbGreen: 255;
|
|
rgbRed: 255;
|
|
rgbReserved: 0);
|
|
|
|
var
|
|
totalPixelCount: Integer;
|
|
elapsed: Cardinal;
|
|
pixelsRemaining: Integer;
|
|
pixel: Integer;
|
|
pixelIndex: Integer;
|
|
pixelCount: Integer;
|
|
pixelPos: Integer;
|
|
statePixels: PRGBAArray;
|
|
maskPixels: PRGBAArray;
|
|
itemsPixels: PRGBAArray;
|
|
|
|
begin
|
|
totalPixelCount := ItemsBuffer.Width * ItemsBuffer.Height;
|
|
elapsed := TimeElapsed;
|
|
pixelsRemaining := totalPixelCount - (Trunc((elapsed / AnimationTime) *
|
|
totalPixelCount));
|
|
|
|
if pixelsRemaining < 0 then
|
|
pixelsRemaining := 0;
|
|
|
|
statePixels := GetScanlinePointer(ItemsState);
|
|
maskPixels := GetScanlinePointer(Mask);
|
|
itemsPixels := nil;
|
|
|
|
if Expanding then
|
|
itemsPixels := GetScanlinePointer(ItemsBuffer);
|
|
|
|
for pixel := 0 to Pred(FPixels.Count - pixelsRemaining) do
|
|
begin
|
|
pixelCount := FPixels.Count;
|
|
pixelIndex := Random(pixelCount);
|
|
|
|
if pixelIndex > Pred(pixelCount) then
|
|
pixelIndex := Pred(pixelCount);
|
|
|
|
pixelPos := Integer(FPixels[pixelIndex]);
|
|
FPixels.Delete(pixelIndex);
|
|
|
|
if Expanding then
|
|
begin
|
|
{ Make the pixel visible }
|
|
statePixels^[pixelPos] := itemsPixels^[pixelPos];
|
|
maskPixels^[pixelPos] := RGBBlack;
|
|
end else
|
|
begin
|
|
{ Make the pixel invisible }
|
|
statePixels^[pixelPos] := RGBBlack;
|
|
maskPixels^[pixelPos] := RGBWhite;
|
|
end;
|
|
end;
|
|
|
|
if elapsed >= AnimationTime then
|
|
Terminate();
|
|
end;
|
|
|
|
procedure TX2MenuBarResolveAnimator.Draw(ACanvas: TCanvas; const ABounds: TRect);
|
|
begin
|
|
ACanvas.CopyMode := cmSrcAnd;
|
|
ACanvas.Draw(ABounds.Left, ABounds.Top, Mask);
|
|
|
|
ACanvas.CopyMode := cmSrcPaint;
|
|
ACanvas.Draw(ABounds.Left, ABounds.Top, ItemsState);
|
|
end;
|
|
|
|
|
|
procedure TX2MenuBarResolveAnimator.SetExpanding(const Value: Boolean);
|
|
begin
|
|
if Value then
|
|
begin
|
|
{ Start with an invisible group }
|
|
FMask.Canvas.Brush.Color := clWhite;
|
|
|
|
with FItemsState.Canvas do
|
|
begin
|
|
Brush.Color := clBlack;
|
|
FillRect(Rect(0, 0, FItemsState.Width, FItemsState.Height));
|
|
end;
|
|
end else
|
|
begin
|
|
{ Start with a visible group }
|
|
FMask.Canvas.Brush.Color := clBlack;
|
|
FItemsState.Canvas.Draw(0, 0, ItemsBuffer);
|
|
end;
|
|
|
|
FMask.Canvas.FillRect(Rect(0, 0, FMask.Width, FMask.Height));
|
|
|
|
inherited;
|
|
end;
|
|
|
|
|
|
{ TX2CustomMenuBarItem }
|
|
constructor TX2CustomMenuBarItem.Create(Collection: TCollection);
|
|
begin
|
|
inherited;
|
|
|
|
FCaption := SDefaultItemCaption;
|
|
FImageIndex := -1;
|
|
FOwnsData := True;
|
|
end;
|
|
|
|
destructor TX2CustomMenuBarItem.Destroy();
|
|
begin
|
|
Data := nil;
|
|
|
|
inherited;
|
|
end;
|
|
|
|
|
|
function TX2CustomMenuBarItem.GetMenuBar(): TX2CustomMenuBar;
|
|
var
|
|
parentCollection: TCollection;
|
|
parentOwner: TPersistent;
|
|
|
|
begin
|
|
Result := nil;
|
|
parentCollection := Collection;
|
|
|
|
{ Traverse up the tree of CollectionItems and OwnedCollections until
|
|
we find a MenuBar... or not. }
|
|
while Assigned(parentCollection) do
|
|
begin
|
|
parentOwner := parentCollection.Owner;
|
|
if Assigned(parentOwner) then
|
|
begin
|
|
if parentOwner is TX2CustomMenuBar then
|
|
begin
|
|
Result := TX2CustomMenuBar(parentCollection.Owner);
|
|
break;
|
|
end else if parentOwner is TCollectionItem then
|
|
parentCollection := TCollectionItem(parentOwner).Collection;
|
|
end else
|
|
break;
|
|
end;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBarItem.Assign(Source: TPersistent);
|
|
begin
|
|
if Source is TX2CustomMenuBarItem then
|
|
with TX2CustomMenuBarItem(Source) do
|
|
begin
|
|
Self.Caption := Caption;
|
|
Self.Data := Data;
|
|
Self.OwnsData := OwnsData;
|
|
end
|
|
else
|
|
inherited;
|
|
end;
|
|
|
|
|
|
procedure TX2CustomMenuBarItem.SetCaption(const Value: String);
|
|
begin
|
|
if Value <> FCaption then
|
|
begin
|
|
FCaption := Value;
|
|
Changed(False);
|
|
end;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBarItem.SetData(const Value: TObject);
|
|
begin
|
|
if Value <> FData then
|
|
begin
|
|
if FOwnsData then
|
|
FreeAndNil(FData);
|
|
|
|
FData := Value;
|
|
end;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBarItem.SetImageIndex(const Value: TImageIndex);
|
|
begin
|
|
if Value <> FImageIndex then
|
|
begin
|
|
FImageIndex := Value;
|
|
Changed(False);
|
|
end;
|
|
end;
|
|
|
|
|
|
{ TX2MenuBarItem }
|
|
function TX2MenuBarItem.GetGroup(): TX2MenuBarGroup;
|
|
begin
|
|
Result := nil;
|
|
|
|
if Assigned(Collection) and (Collection.Owner <> nil) and
|
|
(Collection.Owner is TX2MenuBarGroup) then
|
|
Result := TX2MenuBarGroup(Collection.Owner);
|
|
end;
|
|
|
|
|
|
{ TX2MenuBarItems }
|
|
constructor TX2MenuBarItems.Create(AOwner: TPersistent);
|
|
begin
|
|
inherited Create(AOwner, TX2MenuBarItem);
|
|
end;
|
|
|
|
|
|
function TX2MenuBarItems.Add(const ACaption: TCaption): TX2MenuBarItem;
|
|
begin
|
|
Result := TX2MenuBarItem(inherited Add());
|
|
Result.Caption := ACaption;
|
|
end;
|
|
|
|
|
|
function TX2MenuBarItems.GetItem(Index: Integer): TX2MenuBarItem;
|
|
begin
|
|
Result := TX2MenuBarItem(inherited GetItem(Index));
|
|
end;
|
|
|
|
procedure TX2MenuBarItems.SetItem(Index: Integer; const Value: TX2MenuBarItem);
|
|
begin
|
|
inherited SetItem(Index, Value);
|
|
end;
|
|
|
|
|
|
{ TX2MenuBarGroup }
|
|
constructor TX2MenuBarGroup.Create(Collection: TCollection);
|
|
begin
|
|
inherited;
|
|
|
|
FCaption := SDefaultGroupCaption;
|
|
FItems := TX2MenuBarItems.Create(Self);
|
|
end;
|
|
|
|
destructor TX2MenuBarGroup.Destroy();
|
|
begin
|
|
FreeAndNil(FItems);
|
|
|
|
if OwnsData then
|
|
FreeAndNil(FData);
|
|
|
|
inherited;
|
|
end;
|
|
|
|
|
|
procedure TX2MenuBarGroup.Assign(Source: TPersistent);
|
|
begin
|
|
if Source is TX2MenuBarGroup then
|
|
with TX2MenuBarGroup(Source) do
|
|
Self.Items.Assign(Items);
|
|
|
|
inherited;
|
|
end;
|
|
|
|
|
|
function TX2MenuBarGroup.GetSelectedItem(): Integer;
|
|
begin
|
|
Result := -1;
|
|
|
|
if Items.Count > 0 then
|
|
begin
|
|
if (FSelectedItem >= 0) and (FSelectedItem < Items.Count) then
|
|
Result := FSelectedItem
|
|
else
|
|
Result := 0;
|
|
end;
|
|
end;
|
|
|
|
procedure TX2MenuBarGroup.InternalSetExpanded(const Value: Boolean);
|
|
var
|
|
menu: TX2CustomMenuBar;
|
|
|
|
begin
|
|
FExpanded := Value;
|
|
Changed(False);
|
|
|
|
menu := MenuBar;
|
|
if Assigned(menu) then
|
|
menu.DoExpandedChanged(Self);
|
|
end;
|
|
|
|
procedure TX2MenuBarGroup.SetExpanded(const Value: Boolean);
|
|
var
|
|
menu: TX2CustomMenuBar;
|
|
|
|
begin
|
|
if Value <> FExpanded then
|
|
begin
|
|
menu := MenuBar;
|
|
if Assigned(menu) then
|
|
menu.DoExpandedChanging(Self, Value)
|
|
else
|
|
InternalSetExpanded(Value);
|
|
end;
|
|
end;
|
|
|
|
procedure TX2MenuBarGroup.SetItems(const Value: TX2MenuBarItems);
|
|
begin
|
|
if Value <> FItems then
|
|
begin
|
|
FItems.Assign(Value);
|
|
Changed(False);
|
|
end;
|
|
end;
|
|
|
|
|
|
{ TX2MenuBarGroups }
|
|
constructor TX2MenuBarGroups.Create(AOwner: TPersistent);
|
|
begin
|
|
inherited Create(AOwner, TX2MenuBarGroup);
|
|
end;
|
|
|
|
|
|
function TX2MenuBarGroups.Add(const ACaption: TCaption): TX2MenuBarGroup;
|
|
begin
|
|
Result := TX2MenuBarGroup(inherited Add());
|
|
if Length(ACaption) > 0 then
|
|
Result.Caption := ACaption;
|
|
end;
|
|
|
|
|
|
function TX2MenuBarGroups.GetItem(Index: Integer): TX2MenuBarGroup;
|
|
begin
|
|
Result := TX2MenuBarGroup(inherited GetItem(Index));
|
|
end;
|
|
|
|
procedure TX2MenuBarGroups.SetItem(Index: Integer; const Value: TX2MenuBarGroup);
|
|
begin
|
|
inherited SetItem(Index, Value);
|
|
end;
|
|
|
|
|
|
{ TX2CustomMenuBar }
|
|
constructor TX2CustomMenuBar.Create(AOwner: TComponent);
|
|
begin
|
|
inherited;
|
|
|
|
FBorderStyle := bsNone;
|
|
FGroups := TX2MenuBarGroups.Create(Self);
|
|
FOptions := [mboAllowCollapseAll];
|
|
FExpandingGroups := TStringList.Create();
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.CreateParams(var Params: TCreateParams);
|
|
const
|
|
BorderStyles: array[TBorderStyle] of DWORD = (0, WS_BORDER);
|
|
|
|
begin
|
|
inherited;
|
|
|
|
{ Source: TScrollBox.CreateParams
|
|
Applies the BorderStyle property. }
|
|
with Params do
|
|
begin
|
|
Style := Style or BorderStyles[FBorderStyle];
|
|
|
|
if NewStyleControls and Ctl3D and (FBorderStyle = bsSingle) then
|
|
begin
|
|
Style := Style and not WS_BORDER;
|
|
ExStyle := ExStyle or WS_EX_CLIENTEDGE;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
destructor TX2CustomMenuBar.Destroy();
|
|
begin
|
|
FreeAndNil(FExpandingGroups);
|
|
FreeAndNil(FGroups);
|
|
|
|
inherited;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.WMEraseBkgnd(var Msg: TWMEraseBkgnd);
|
|
begin
|
|
Msg.Result := 0;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.Paint();
|
|
var
|
|
buffer: Graphics.TBitmap;
|
|
bufferRect: TRect;
|
|
expand: Boolean;
|
|
group: TX2MenuBarGroup;
|
|
|
|
begin
|
|
if Assigned(Painter) then
|
|
begin
|
|
buffer := Graphics.TBitmap.Create();
|
|
try
|
|
buffer.PixelFormat := pf24bit;
|
|
buffer.Width := Self.ClientWidth;
|
|
buffer.Height := Self.ClientHeight;
|
|
bufferRect := Rect(0, 0, buffer.Width, buffer.Height);
|
|
buffer.Canvas.Font.Assign(Self.Font);
|
|
|
|
Painter.BeginPaint(Self);
|
|
try
|
|
Painter.DrawBackground(buffer.Canvas, bufferRect);
|
|
|
|
bufferRect := Painter.ApplyMargins(bufferRect);
|
|
DrawMenu(buffer.Canvas, bufferRect);
|
|
finally
|
|
Painter.EndPaint();
|
|
end;
|
|
finally
|
|
Self.Canvas.Draw(0, 0, buffer);
|
|
FreeAndNil(buffer);
|
|
end;
|
|
|
|
if Assigned(Animator) then
|
|
begin
|
|
if Animator.Terminated then
|
|
begin
|
|
Animator.Group.InternalSetExpanded(Animator.Expanding);
|
|
FreeAndNil(FAnimator);
|
|
end
|
|
else
|
|
{ Prevent 100% CPU usage }
|
|
Sleep(5);
|
|
|
|
TestMousePos();
|
|
Invalidate();
|
|
end
|
|
else
|
|
{ Process animation queue }
|
|
if FExpandingGroups.Count > 0 then
|
|
begin
|
|
expand := (FExpandingGroups[0] = #1);
|
|
group := TX2MenuBarGroup(FExpandingGroups.Objects[0]);
|
|
FExpandingGroups.Delete(0);
|
|
|
|
group.Expanded := expand;
|
|
end;
|
|
end
|
|
else
|
|
DrawNoPainter(Self.Canvas, Self.ClientRect);
|
|
end;
|
|
|
|
|
|
function TX2CustomMenuBar.GetDrawState(AItem: TX2CustomMenuBarItem): TX2MenuBarDrawStates;
|
|
function ItemGroup(AGroupItem: TX2CustomMenuBarItem): TX2MenuBarGroup;
|
|
begin
|
|
Result := nil;
|
|
if AGroupItem is TX2MenuBarItem then
|
|
Result := TX2MenuBarItem(AGroupItem).Group;
|
|
end;
|
|
|
|
begin
|
|
Result := [];
|
|
|
|
if AItem = FHotItem then
|
|
Include(Result, mdsHot);
|
|
|
|
if AItem = FSelectedItem then
|
|
Include(Result, mdsSelected);
|
|
|
|
if Assigned(FHotItem) and (AItem = ItemGroup(FHotItem)) then
|
|
Include(Result, mdsGroupHot);
|
|
|
|
if Assigned(FSelectedItem) and (AItem = ItemGroup(FSelectedItem)) then
|
|
Include(Result, mdsGroupSelected);
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.DrawMenuItem(Sender: TObject;
|
|
Item: TX2CustomMenuBarItem;
|
|
const MenuBounds, ItemBounds: TRect;
|
|
Data: Pointer; var Abort: Boolean);
|
|
var
|
|
canvas: TCanvas;
|
|
drawState: TX2MenuBarDrawStates;
|
|
group: TX2MenuBarGroup;
|
|
groupBounds: TRect;
|
|
|
|
begin
|
|
if ItemBounds.Top > MenuBounds.Bottom then
|
|
begin
|
|
Abort := True;
|
|
exit;
|
|
end;
|
|
|
|
canvas := TCanvas(Data);
|
|
drawState := GetDrawState(Item);
|
|
|
|
if Item is TX2MenuBarGroup then
|
|
begin
|
|
group := TX2MenuBarGroup(Item);
|
|
Painter.DrawGroupHeader(canvas, group, ItemBounds,
|
|
drawState);
|
|
|
|
if Assigned(Animator) and (Animator.Group = group) then
|
|
begin
|
|
groupBounds := MenuBounds;
|
|
groupBounds.Top := ItemBounds.Bottom +
|
|
Painter.GetSpacing(seAfterGroupHeader) +
|
|
Painter.GetSpacing(seBeforeFirstItem);
|
|
groupBounds.Bottom := groupBounds.Top + Animator.Height;
|
|
Animator.Draw(canvas, groupBounds);
|
|
end;
|
|
end else if Item is TX2MenuBarItem then
|
|
Painter.DrawItem(canvas, TX2MenuBarItem(Item), ItemBounds, drawState);
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.DrawMenuItems(ACanvas: TCanvas; AGroup: TX2MenuBarGroup; const ABounds: TRect);
|
|
var
|
|
itemBounds: TRect;
|
|
itemIndex: Integer;
|
|
item: TX2MenuBarItem;
|
|
drawState: TX2MenuBarDrawStates;
|
|
|
|
begin
|
|
Assert(Assigned(Painter), 'No Painter assigned');
|
|
itemBounds := ABounds;
|
|
Inc(itemBounds.Top, Painter.GetSpacing(seBeforeFirstItem));
|
|
|
|
for itemIndex := 0 to Pred(AGroup.Items.Count) do
|
|
begin
|
|
Inc(itemBounds.Top, Painter.GetSpacing(seBeforeItem));
|
|
|
|
item := AGroup.Items[itemIndex];
|
|
itemBounds.Bottom := itemBounds.Top + Painter.GetItemHeight(item);
|
|
|
|
drawState := GetDrawState(item);
|
|
Painter.DrawItem(ACanvas, item, itemBounds, drawState);
|
|
|
|
itemBounds.Top := itemBounds.Bottom + Painter.GetSpacing(seAfterItem);
|
|
end;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.DrawMenu(ACanvas: TCanvas; const ABounds: TRect);
|
|
begin
|
|
IterateItemBounds(DrawMenuItem, Pointer(ACanvas));
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.DrawNoPainter(ACanvas: TCanvas; const ABounds: TRect);
|
|
const
|
|
XorColor = $00FFD8CE; // RGB(206, 216, 255)
|
|
|
|
begin
|
|
with ACanvas do
|
|
begin
|
|
Brush.Color := clBtnFace;
|
|
FillRect(ABounds);
|
|
|
|
Pen.Style := psDot;
|
|
Pen.Mode := pmXor;
|
|
Pen.Color := XorColor;
|
|
Brush.Style := bsClear;
|
|
Rectangle(ABounds);
|
|
|
|
DrawText(ACanvas, SNoPainter, ABounds, taCenter);
|
|
end;
|
|
end;
|
|
|
|
|
|
function TX2CustomMenuBar.IterateItemBounds(ACallback: TX2MenuBarItemBoundsProc;
|
|
AData: Pointer): TX2CustomMenuBarItem;
|
|
var
|
|
groupIndex: Integer;
|
|
group: TX2MenuBarGroup;
|
|
menuBounds: TRect;
|
|
itemBounds: TRect;
|
|
itemIndex: Integer;
|
|
item: TX2MenuBarItem;
|
|
abort: Boolean;
|
|
|
|
begin
|
|
Assert(Assigned(Painter), 'No Painter assigned');
|
|
if Assigned(Animator) then
|
|
Animator.Update();
|
|
|
|
Result := nil;
|
|
menuBounds := Painter.ApplyMargins(Self.ClientRect);
|
|
itemBounds := menuBounds;
|
|
abort := False;
|
|
|
|
for groupIndex := 0 to Pred(Groups.Count) do
|
|
begin
|
|
{ Group }
|
|
group := Groups[groupIndex];
|
|
Inc(itemBounds.Top, Painter.GetSpacing(seBeforeGroupHeader));
|
|
itemBounds.Bottom := itemBounds.Top +
|
|
Painter.GetGroupHeaderHeight(group);
|
|
|
|
ACallback(Self, group, menuBounds, itemBounds, AData, abort);
|
|
if abort then
|
|
begin
|
|
Result := group;
|
|
break;
|
|
end;
|
|
|
|
itemBounds.Top := itemBounds.Bottom +
|
|
Painter.GetSpacing(seAfterGroupHeader);
|
|
|
|
if Assigned(Animator) and (Animator.Group = group) then
|
|
begin
|
|
{ Animated group }
|
|
Inc(itemBounds.Top, Animator.Height);
|
|
end else if group.Expanded then
|
|
begin
|
|
Inc(itemBounds.Top, Painter.GetSpacing(seBeforeFirstItem));
|
|
|
|
for itemIndex := 0 to Pred(group.Items.Count) do
|
|
begin
|
|
{ Item }
|
|
item := group.Items[itemIndex];
|
|
Inc(itemBounds.Top, Painter.GetSpacing(seBeforeItem));
|
|
itemBounds.Bottom := itemBounds.Top + Painter.GetItemHeight(item);
|
|
|
|
ACallback(Self, item, menuBounds, itemBounds, AData, abort);
|
|
if abort then
|
|
begin
|
|
Result := item;
|
|
break;
|
|
end;
|
|
|
|
itemBounds.Top := itemBounds.Bottom +
|
|
Painter.GetSpacing(seAfterItem);
|
|
end;
|
|
|
|
Inc(itemBounds.Top, Painter.GetSpacing(seAfterLastItem));
|
|
end;
|
|
|
|
if abort then
|
|
break;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TX2CustomMenuBar.DoExpandedChanging(AGroup: TX2MenuBarGroup;
|
|
AExpanding: Boolean);
|
|
function ExpandedGroupsCount(): Integer;
|
|
var
|
|
groupIndex: Integer;
|
|
|
|
begin
|
|
Result := 0;
|
|
for groupIndex := 0 to Pred(Groups.Count) do
|
|
if Groups[groupIndex].Expanded then
|
|
Inc(Result);
|
|
end;
|
|
|
|
begin
|
|
if csLoading in ComponentState then
|
|
begin
|
|
AGroup.InternalSetExpanded(AExpanding);
|
|
exit;
|
|
end;
|
|
|
|
{ Auto select item }
|
|
if mboAutoSelectItem in Options then
|
|
AutoSelectItem(AGroup);
|
|
|
|
{ Allow collapse all }
|
|
if not (AExpanding or (mboAllowCollapseAll in Options)) then
|
|
if ExpandedGroupsCount() = 1 then
|
|
exit;
|
|
|
|
{ Auto collapse }
|
|
if mboAutoCollapse in Options then
|
|
if AExpanding then
|
|
AutoCollapse(AGroup);
|
|
|
|
DoExpand(AGroup, AExpanding);
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.DoExpandedChanged(AGroup: TX2MenuBarGroup);
|
|
begin
|
|
// #ToDo1 (MvR) 27-3-2006: raise event
|
|
end;
|
|
|
|
|
|
function TX2CustomMenuBar.AllowInteraction(): Boolean;
|
|
begin
|
|
Result := not Assigned(Animator);
|
|
end;
|
|
|
|
|
|
procedure TX2CustomMenuBar.DoExpand(AGroup: TX2MenuBarGroup; AExpanding: Boolean);
|
|
var
|
|
animatorClass: TX2MenuBarAnimatorClass;
|
|
itemsBuffer: Graphics.TBitmap;
|
|
itemsBounds: TRect;
|
|
|
|
begin
|
|
if not Assigned(Painter) then
|
|
exit;
|
|
|
|
if Assigned(Animator) then
|
|
begin
|
|
FExpandingGroups.AddObject(Chr(Ord(AExpanding)), AGroup);
|
|
end else
|
|
begin
|
|
animatorClass := Painter.GetAnimatorClass();
|
|
if Assigned(animatorClass) then
|
|
begin
|
|
Painter.BeginPaint(Self);
|
|
try
|
|
itemsBuffer := Graphics.TBitmap.Create();
|
|
try
|
|
itemsBounds := Painter.ApplyMargins(Self.ClientRect);
|
|
itemsBuffer.PixelFormat := pf24bit;
|
|
itemsBuffer.Width := itemsBounds.Right - itemsBounds.Left;
|
|
itemsBuffer.Height := Painter.GetGroupHeight(AGroup);
|
|
itemsBounds := Rect(0, 0, itemsBuffer.Width, itemsBuffer.Height);
|
|
|
|
// #ToDo3 (MvR) 23-3-2006: this will probably cause problems if we ever
|
|
// want a bitmapped/customdrawn background.
|
|
// Maybe we can trick around a bit with the
|
|
// canvas offset? think about it later.
|
|
itemsBuffer.Canvas.Font.Assign(Self.Font);
|
|
Painter.DrawBackground(itemsBuffer.Canvas, itemsBounds);
|
|
DrawMenuItems(itemsBuffer.Canvas, AGroup, itemsBounds);
|
|
|
|
Animator := animatorClass.Create(itemsBuffer);
|
|
Animator.AnimationTime := Painter.AnimationTime;
|
|
Animator.Expanding := AExpanding;
|
|
Animator.Group := AGroup;
|
|
finally
|
|
FreeAndNil(itemsBuffer);
|
|
end;
|
|
finally
|
|
Painter.EndPaint();
|
|
Invalidate();
|
|
end;
|
|
end else
|
|
AGroup.InternalSetExpanded(AExpanding);
|
|
end;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.AutoCollapse(AGroup: TX2MenuBarGroup);
|
|
var
|
|
expandedGroup: TX2MenuBarGroup;
|
|
groupIndex: Integer;
|
|
group: TX2MenuBarGroup;
|
|
|
|
begin
|
|
expandedGroup := AGroup;
|
|
if not Assigned(expandedGroup) then
|
|
begin
|
|
for groupIndex := 0 to Pred(Groups.Count) do
|
|
if Groups[groupIndex].Expanded then
|
|
begin
|
|
expandedGroup := Groups[groupIndex];
|
|
break;
|
|
end;
|
|
|
|
if not Assigned(expandedGroup) then
|
|
if Groups.Count > 0 then
|
|
begin
|
|
expandedGroup := Groups[0];
|
|
expandedGroup.Expanded := True;
|
|
end else
|
|
exit;
|
|
end;
|
|
|
|
for groupIndex := 0 to Pred(Groups.Count) do
|
|
begin
|
|
group := Groups[groupIndex];
|
|
|
|
if (group <> expandedGroup) and (group.Expanded) then
|
|
DoExpand(group, False);
|
|
end;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.AutoSelectItem(AGroup: TX2MenuBarGroup);
|
|
var
|
|
group: TX2MenuBarGroup;
|
|
groupIndex: Integer;
|
|
|
|
begin
|
|
group := AGroup;
|
|
if not Assigned(group) then
|
|
begin
|
|
for groupIndex := 0 to Pred(Groups.Count) do
|
|
if Groups[groupIndex].Expanded then
|
|
begin
|
|
group := Groups[groupIndex];
|
|
break;
|
|
end;
|
|
|
|
if (not Assigned(group)) and (Groups.Count > 0) then
|
|
begin
|
|
group := Groups[0];
|
|
group.Expanded := True;
|
|
end;
|
|
|
|
if not Assigned(group) then
|
|
exit;
|
|
end;
|
|
|
|
if group.Items.Count > 0 then
|
|
begin
|
|
FSelectedItem := group.Items[group.SelectedItem];
|
|
Invalidate();
|
|
end;
|
|
end;
|
|
|
|
|
|
function TX2CustomMenuBar.HitTest(const APoint: TPoint): TX2MenuBarHitTest;
|
|
var
|
|
hitPoint: TPoint;
|
|
hitRect: TRect;
|
|
|
|
begin
|
|
Result.HitTestCode := htUnknown;
|
|
Result.Item := nil;
|
|
hitPoint := APoint;
|
|
hitRect := Painter.ApplyMargins(Self.ClientRect);
|
|
|
|
if PtInRect(hitRect, APoint) then
|
|
begin
|
|
Painter.BeginPaint(Self);
|
|
try
|
|
Result := Painter.HitTest(hitPoint);
|
|
finally
|
|
Painter.EndPaint();
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function TX2CustomMenuBar.HitTest(AX, AY: Integer): TX2MenuBarHitTest;
|
|
begin
|
|
Result := HitTest(Point(AX, AY));
|
|
end;
|
|
|
|
|
|
procedure TX2CustomMenuBar.Notification(AComponent: TComponent; Operation: TOperation);
|
|
begin
|
|
if Operation = opRemove then
|
|
if AComponent = FPainter then
|
|
begin
|
|
FPainter := nil;
|
|
Invalidate();
|
|
end else if AComponent = FImageList then
|
|
begin
|
|
FImageList := nil;
|
|
Invalidate();
|
|
end;
|
|
|
|
inherited;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.PainterUpdate(Sender: TX2CustomMenuBarPainter);
|
|
begin
|
|
Invalidate();
|
|
end;
|
|
|
|
|
|
procedure TX2CustomMenuBar.MouseDown(Button: TMouseButton; Shift: TShiftState;
|
|
X, Y: Integer);
|
|
var
|
|
hitTest: TX2MenuBarHitTest;
|
|
group: TX2MenuBarGroup;
|
|
|
|
begin
|
|
if Button = mbLeft then
|
|
if AllowInteraction then
|
|
begin
|
|
hitTest := Self.HitTest(X, Y);
|
|
|
|
if hitTest.HitTestCode = htGroup then
|
|
begin
|
|
group := TX2MenuBarGroup(hitTest.Item);
|
|
if group.Items.Count > 0 then
|
|
begin
|
|
group.Expanded := not group.Expanded;
|
|
hitTest.Item := FSelectedItem;
|
|
Invalidate();
|
|
end;
|
|
end;
|
|
|
|
if Assigned(hitTest.Item) and (hitTest.Item <> FSelectedItem) then
|
|
begin
|
|
if hitTest.HitTestCode = htItem then
|
|
TX2MenuBarItem(hitTest.Item).Group.SelectedItem := hitTest.Item.Index;
|
|
|
|
FSelectedItem := hitTest.Item;
|
|
Invalidate();
|
|
end;
|
|
end;
|
|
|
|
inherited;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.MouseMove(Shift: TShiftState; X, Y: Integer);
|
|
begin
|
|
FLastMousePos := Point(X, Y);
|
|
TestMousePos();
|
|
|
|
inherited;
|
|
end;
|
|
|
|
//procedure TX2CustomMenuBar.MouseUp(Button: TMouseButton; Shift: TShiftState;
|
|
// X, Y: Integer);
|
|
//begin
|
|
// inherited;
|
|
//end;
|
|
|
|
procedure TX2CustomMenuBar.CMMouseLeave(var Message: TMessage);
|
|
begin
|
|
FLastMousePos := Point(-1, -1);
|
|
FHotItem := nil;
|
|
Invalidate();
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.TestMousePos();
|
|
var
|
|
hitTest: TX2MenuBarHitTest;
|
|
|
|
begin
|
|
hitTest := Self.HitTest(FLastMousePos.X, FLastMousePos.Y);
|
|
if hitTest.Item <> FHotItem then
|
|
begin
|
|
FHotItem := hitTest.Item;
|
|
Invalidate();
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TX2CustomMenuBar.SetBorderStyle(const Value: TBorderStyle);
|
|
begin
|
|
if Value <> FBorderStyle then
|
|
begin
|
|
FBorderStyle := Value;
|
|
RecreateWnd();
|
|
end;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.SetGroups(const Value: TX2MenuBarGroups);
|
|
begin
|
|
if Value <> FGroups then
|
|
FGroups.Assign(Value);
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.SetImageList(const Value: TCustomImageList);
|
|
begin
|
|
if Value <> FImageList then
|
|
begin
|
|
if Assigned(FImageList) then
|
|
FImageList.RemoveFreeNotification(Self);
|
|
|
|
FImageList := Value;
|
|
|
|
if Assigned(FImageList) then
|
|
FImageList.FreeNotification(Self);
|
|
|
|
Invalidate();
|
|
end;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.SetOptions(const Value: TX2MenuBarOptions);
|
|
begin
|
|
if Value <> FOptions then
|
|
begin
|
|
FOptions := Value;
|
|
Invalidate();
|
|
|
|
if mboAutoCollapse in Options then
|
|
AutoCollapse(nil);
|
|
|
|
if (mboAutoSelectItem in Options) and (not Assigned(FSelectedItem)) then
|
|
AutoSelectItem(nil);
|
|
end;
|
|
end;
|
|
|
|
procedure TX2CustomMenuBar.SetPainter(const Value: TX2CustomMenuBarPainter);
|
|
begin
|
|
if FPainter <> Value then
|
|
begin
|
|
if Assigned(FPainter) then
|
|
begin
|
|
FPainter.DetachObserver(Self);
|
|
FPainter.RemoveFreeNotification(Self);
|
|
end;
|
|
|
|
FPainter := Value;
|
|
|
|
if Assigned(FPainter) then
|
|
begin
|
|
FPainter.FreeNotification(Self);
|
|
FPainter.AttachObserver(Self);
|
|
end;
|
|
|
|
Invalidate;
|
|
end;
|
|
end;
|
|
|
|
end.
|