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File indexing completed on 2023-03-17 11:01:44
0001 #ifndef Fireworks_TableWidget_FWTableCellRendererBase_h 0002 #define Fireworks_TableWidget_FWTableCellRendererBase_h 0003 // -*- C++ -*- 0004 // 0005 // Package: TableWidget 0006 // Class : FWTableCellRendererBase 0007 // 0008 /**\class FWTableCellRendererBase FWTableCellRendererBase.h Fireworks/TableWidget/interface/FWTableCellRendererBase.h 0009 0010 Description: base class for classes which handle drawing and interaction with cells in the table 0011 0012 Usage: 0013 Renderers do the actual drawing of data into the cell (via the 'draw' method) and can allow user interaction with a cell 0014 (via the 'buttonEvent' method). When drawing a cell in the table, FWTableWidget ask its held FWTableManagerBase for a 0015 FWTableCellRendererBase for that particular cell and then calls the 'draw' method. Similarly, when a mouse button is pressed 0016 while the cursor is in a particular cell, the FWTableWidget asks its held FWTableManagerBase for a FWTableCellRendererBase for that 0017 particular cell and then calls the 'buttonEvent' method. For efficiency reasons, we encourage the reuse of the same 0018 FWTableCellRendererBase instance for multiple cells. The FWTableWidget is written so that it always requests a renderer from the 0019 FWTableManagerBase thereby allowing this reuse to work even when the renderer holds state information particular for only one cell 0020 (e.g. color). 0021 0022 Classes which inherit from FWTableManagerBase are responsible for creating the appropriate FWTableCellRendererBase for the data 0023 held in the table's cells. When the FWTableWidget asks the FWTableManagerBase for a renderer for a particular cell, it is the 0024 FWTableManagerBase's job to reset the renderer so that it can properly draw and/or interact with that cell. To allow reuse of 0025 the same object, classes which inherit from FWTableCellRendererBase normally have 'setter' methods which are used to set the 0026 renderer so it can represent a particular cell. 0027 0028 One inherits from FWTableCellRendererBase in order to provide custom ways to view data in the cell or to customize how users 0029 interact with the cell. Inheritance can also be used to allow a renderer to work directly with data held by a FWTableManagerBase. 0030 0031 */ 0032 // 0033 // Original Author: Chris Jones 0034 // Created: Mon Feb 2 16:40:18 EST 2009 0035 // 0036 0037 // system include files 0038 #include "GuiTypes.h" 0039 0040 // user include files 0041 0042 // forward declarations 0043 0044 class FWTableCellRendererBase { 0045 public: 0046 FWTableCellRendererBase(); 0047 virtual ~FWTableCellRendererBase(); 0048 0049 // ---------- const member functions --------------------- 0050 ///returns the minimum width of the cell to which the renderer is representing 0051 virtual UInt_t width() const = 0; 0052 ///returns the minimum height of the cell to which the renderer is representing 0053 virtual UInt_t height() const = 0; 0054 0055 /** Called to draw a particular cell: arguments 0056 iID: the id for the drawable in the window. Needed in order to do calls to gVirtualX or to TGFont 0057 iX: screen x position that the cell drawing area starts 0058 iY: screen y position that the cell drawing area starts 0059 iWidth: width (x dimension) of cell drawing area. May be larger than value returned from width() 0060 iHeight: height (x dimension) of cell drawing area. May be larger than value returned from height() 0061 */ 0062 virtual void draw(Drawable_t iID, int iX, int iY, unsigned int iWidth, unsigned int iHeight) = 0; 0063 0064 // ---------- member functions --------------------------- 0065 /** Called when a mouse button event occurs when the cursor is over a particular cell: arguments 0066 iClickEvent: the ROOT GUI event caused by the mouse button 0067 iRelClickX: the x position of the cursor click relative to the start of the cell drawing area 0068 iRelClickY: the y position of the cursor click relative to the start of the cell drawing area 0069 */ 0070 virtual void buttonEvent(Event_t* iClickEvent, int iRelClickX, int iRelClickY); 0071 0072 FWTableCellRendererBase(const FWTableCellRendererBase&) = delete; // stop default 0073 0074 const FWTableCellRendererBase& operator=(const FWTableCellRendererBase&) = delete; // stop default 0075 0076 // ---------- member data -------------------------------- 0077 }; 0078 0079 #endif
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