// $Id: sglayer.h 1282 2006-06-09 09:46:49Z alex $ /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE ================================XARAHEADERSTART=========================== Xara LX, a vector drawing and manipulation program. Copyright (C) 1993-2006 Xara Group Ltd. Copyright on certain contributions may be held in joint with their respective authors. See AUTHORS file for details. LICENSE TO USE AND MODIFY SOFTWARE ---------------------------------- This file is part of Xara LX. Xara LX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. Xara LX and its component source files are distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ // SGLayer.h - the LayerSGallery (Layer SuperGallery) class #ifndef INC_SGLAYER #define INC_SGLAYER //#include "sgallery.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "sgtree.h" - in camtypes.h [AUTOMATICALLY REMOVED] #include "layergal.h" class DocView; class Layer; // WEBSTER - markn 15/1/97 // Don't need this gallery in Webster // Only need the bits left by ralph //#ifdef WEBSTER // #ifndef EXCLUDE_GALS // #define UNDEF_EXCLUDE_GALS // Remember to undefine EXCLUDE_GALS at the end // #define EXCLUDE_GALS // #endif //#endif #ifndef EXCLUDE_GALS /*********************************************************************************************** > class SGDisplayLayer : public SGDisplayItem Author: Jason_Williams (Xara Group Ltd) (Based on template code by Jason) Created: 27/01/95 Purpose: This DisplayTree node is used by the Layer SuperGallery It is responsible for providing the ability to handle/redraw one Layer displayed in said gallery. SeeAlso: LayerSGallery; SuperGallery; SGDisplayItem ***********************************************************************************************/ class CCAPI SGDisplayLayer : public SGDisplayItem { friend class SGLayerGroup; // Allows access to CalculateButtonRects CC_DECLARE_DYNAMIC(SGDisplayLayer); public: SGDisplayLayer(); SGDisplayLayer(Layer *LayerToDisplay); ~SGDisplayLayer(); virtual BOOL HandleEvent(SGEventType EventType, void *EventInfo, SGMiscInfo *MiscInfo); // Functions that handle dragging of layers virtual void MoveBefore(SGDisplayNode *NodeToMove); virtual void MoveAfter(SGDisplayNode *NodeToMove); virtual void MoveLayer(SGDisplayNode *NodeToMove,BOOL Before,BOOL ToggleBackground); protected: // Internal handlers virtual void CalculateMyRect(SGFormatInfo *FormatInfo, SGMiscInfo *MiscInfo); // Determines item size for the current DisplayMode and calculates FormatRect static void CalculateButtonRects(SGMiscInfo *MiscInfo, DocRect *MyRect, DocRect *VisibleBtn, DocRect *LockedBtn, DocRect *SnapButton = NULL); // Chops off two (three) button rects from the given 'myrect' virtual void HandleRedraw(SGRedrawInfo *RedrawInfo, SGMiscInfo *MiscInfo); // Redraws the item into the current FormatRect virtual void DoChangeState(OpLayerGalReason Reason,BOOL NewState); // Changes the state of the layer this object displays, in some way virtual void ChangeRangeState(SGDisplayLayer *Start, SGDisplayLayer *End, BOOL Range, INT32 WhichButton, SGMiscInfo *MiscInfo); // Changes the state (visible or locked) of a range of layers public: // Specialisations of this class inline Layer *GetDisplayedLayer(void); protected: // Special member variables (Used to be private but needed by SGDisplayFrame) Layer *TheLayer; private: // Special member variables static SGDisplayLayer *LastClickedLayer; // Remembers the last layer clicked on (for shift-clicks) }; /*********************************************************************************************** > class SGLayerGroup : public SGDisplayGroup Author: Jason_Williams (Xara Group Ltd) Created: 1/2/95 Purpose: This is a display tree group specifically for the layer gallery - it disables group things like folding, and provides column headings for the layers display. SeeAlso: SuperGallery; SGDisplayGroup; ***********************************************************************************************/ class CCAPI SGLayerGroup : public SGDisplayGroup { CC_DECLARE_DYNAMIC(SGLayerGroup); public: SGLayerGroup(SuperGallery *ParentGal, Document *ParentDoc = NULL, Library *ParentLib = NULL, BOOL IsForeground = TRUE); virtual BOOL HandleEvent(SGEventType EventType, void *EventInfo, SGMiscInfo *MiscInfo); // Handles a display list event (redraw, mouse click, etc) // Is this group the foreground layer group (TRUE) or the background layer group (FALSE) BOOL IsForeground() { return Foreground; } private: BOOL Foreground; }; /******************************************************************************************** > inline Layer *SGDisplayLayer::GetDisplayedLayer(void) Author: Jason_Williams (Xara Group Ltd) (Based on template code by Jason) Created: 27/1/95 Returns: A pointer to the Layer which this Display Item is used to display. Purpose: To find out the Layer this object is responsible for displaying ********************************************************************************************/ Layer *SGDisplayLayer::GetDisplayedLayer(void) { return(TheLayer); } #endif /*********************************************************************************************** > class LayerSGallery : public SuperGallery Author: Jason_Williams (Xara Group Ltd) (Based on template code by Jason) Created: 27/1/95 (Based on the Colour SGallery code) Purpose: The Layer SuperGallery class Notes: SuperGalleries are specced in a number of docs including specs\sgallery.doc ("super" gallery extensions) specs\propui.doc (gallery basic ui) There is also howtouse\sgallery.doc which describes creating a supergallery SeeAlso: SuperGallery; SGDisplayLayer ***********************************************************************************************/ #ifdef EXCLUDE_GALS class LayerSGallery : public Operation #else class LayerSGallery : public SuperGallery #endif { CC_DECLARE_DYNCREATE(LayerSGallery) public: LayerSGallery(); ~LayerSGallery(); #ifndef EXCLUDE_GALS virtual MsgResult Message(Msg* Message); protected: // Overridden upcall methods virtual BOOL PreCreate(void); virtual BOOL PostCreate(void); virtual BOOL ApplyAction(SGActionType Action); virtual void DoShadeGallery(BOOL ShadeIt); // handles the copying of items between groups via item drags virtual SGDisplayItem *CopyDisplayItem(SGDisplayItem *SourceItem, SGDisplayGroup *DestGroup, SGDisplayItem *TargetPosition = NULL); public: // Overridden Command interface (for Ops and menu support) virtual BOOL InitMenuCommands(void); // Called on startup to initialise any desired menu commands. Will make repeated calls // to InitMenuCommand(), below. virtual BOOL BuildCommandMenu(GalleryContextMenu *TheMenu, SGMenuID MenuID); // Builds the command menu for the given menu pop-up (over an item, or options button) virtual OpState GetCommandState(StringBase *CommandID, String_256 *ShadeReason); // Returns an OpState indicating the state of this command, much like an Op GetState virtual void DoCommand(StringBase *CommandID); // Attempts to "do" the given command. Should call down to the base class to handle // any commands it can't deal with. public: // Personal/Internal methods virtual void CreateNewSubtree(Document *ParentDoc, SGDisplayGroup *ExistingGroup = NULL); // Creates a new subtree group to display the Layers for the given document // If ExistingGroup != NULL, that group will be re-cached for the given doc public: inline Spread *GetSelectedSpread(void); // Returns the spread which the layer gallery is currently using protected: Spread *pSpread; // The Current spread Document *pDoc; // The Current document SGDisplayGroup *DisplayForeground; // Group of foreground layers SGDisplayGroup *DisplayBackground; // Group of background layers BOOL m_NewDocBorn; // Flag to determine when a new doc. is born. protected: // Internal methods (directly ported from old LayerGallery class) virtual void NewSelectedSpread(Spread* pNewSelSpread = NULL); virtual void EnsureSelSpreadSelectionIntegrity(); #endif public: // Public so SGDisplayLayer items can call them static void ForceRedrawLayer(Document* pDoc,Layer* pLayer); static void MakeActiveLayer(Layer* pNewActiveLayer, BOOL TellAll = TRUE); static void EnsureActiveLayerIntegrity(Spread* pSpread,Layer** ppActiveLayer = NULL); public: // Public access functions for everybody who wants 'em static void SetActive(Document* pDoc,Layer* pLayer,BOOL state); static void MakeTopLayerActive(Spread* pSpread); static String_256 CreateUniqueLayerID(Spread* pSpread); #ifndef EXCLUDE_GALS protected: virtual void EnsureActiveLayerIntegrity(); virtual BOOL CheckVarsAreValid(); virtual SGDisplayLayer *GetSelectedLayerGalItem(); virtual BOOL HasLayerGotChildren(Layer* pLayer); virtual BOOL PrepareToDelete(void); virtual BOOL DoDeleteSelection(void); virtual void DoCreateNewItem(void); virtual void DoChangeName(); virtual void DoCopyLayer(); virtual void DoLayerProperties(); virtual void DoCreateGuideLayer(); virtual void DoChangeLayerStatus(Layer* pLayer, const LayerStatus& NewStatus); virtual void DoMoveLayer(MoveLayerType Reason); protected: // Used to be private but needed by FrameSGallery virtual INT32 GetGuideLayerState(DocView* pDocView); INT32 OldGuideLayerState; INT32 NewGuideLayerState; virtual BOOL IsSelectedItemGuideLayer(); public: static void DoChangeVisible(Layer* pLayer,BOOL Visible); static void DoChangeLocked(Layer* pLayer,BOOL Locked); virtual void DoChangeAllVisible(BOOL AllVisible); virtual void DoChangeMultilayer(BOOL Multilayer); virtual void DoChangeLayerState(Layer* pLayer,OpLayerGalReason Reason,BOOL NewState); static BOOL DoMoveSelectionToActiveLayer(); protected: // Function to determine the document mode. BOOL IsLayerMode(Document* pDoc); // Function to close the frame gallery BOOL CloseLayerGallery(); // Function to open the Layer gallery BOOL OpenFrameGallery(); // Access functions to determine when a new document is born. void SetNewDocBorn(BOOL Val) { m_NewDocBorn = Val; } BOOL GetNewDocBorn() { return m_NewDocBorn; } #endif }; #ifndef EXCLUDE_GALS /******************************************************************************************** > inline Spread *LayerSGallery::GetSelectedSpread(void) Author: Jason_Williams (Xara Group Ltd) Created: 30/1/95 Returns: A pointer to the spread that the layer gallery regards as 'current' Purpose: To find the current layer gallery spread ********************************************************************************************/ Spread *LayerSGallery::GetSelectedSpread(void) { return(pSpread); } #endif // WEBSTER - markn 15/1/97 // Do we need to undefine EXCLUDE_GALS? //#ifdef UNDEF_EXCLUDE_GALS //#undef EXCLUDE_GALS //#undef UNDEF_EXCLUDE_GALS //#endif #endif //INC_SGLAYER