495 lines
13 KiB
C++
495 lines
13 KiB
C++
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//
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// DRAW.HPP
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// Drawing Code
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//
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// Copyright Microsoft 1998-
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//
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#ifndef __DRAW_HPP_
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#define __DRAW_HPP_
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//
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// Timer for periodic update of some graphic objects
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//
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#define TIMER_GRAPHIC_UPDATE 2
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#define EqualPoint(pt1, pt2) (((pt1).x == (pt2).x) && ((pt1).y == (pt2).y))
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#define DRAW_WIDTH 1024
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#define DRAW_HEIGHT 768
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#define DRAW_LINEVSCROLL 8
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#define DRAW_LINEHSCROLL 8
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#define DRAW_HANDLESIZE 6
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#define DRAW_ZOOMFACTOR 2
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#define DRAW_REMOTEPOINTERDELAY 250
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#define DRAW_GRAPHICUPDATEDELAY 1000
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//
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//
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// Class: WbDrawingArea
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//
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// Purpose: drawing window
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//
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//
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class WbDrawingArea
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{
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friend class DCWbGraphic;
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friend class DCWbGraphicLine;
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friend class DCWbGraphicFreehand;
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friend class DCWbGraphicRectangle;
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friend class DCWbGraphicFilledRectangle;
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friend class DCWbGraphicEllipse;
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friend class DCWbGraphicFilledEllipse;
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friend class DCWbGraphicSelectTrackingRectangle;
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friend class DCWbGraphicMarker;
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friend class DCWbGraphicText;
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friend class DCWbGraphicDIB;
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friend class WbTextBox;
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public:
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//
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// Constructor
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//
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WbDrawingArea(void);
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~WbDrawingArea(void);
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void ShutDownDC(void);
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//
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// Create the drawing area
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//
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BOOL Create(HWND hwndParent, LPCRECT lprect);
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//
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// Return TRUE if the drawing area is busy and may be actively using
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// graphic objects in the current page.
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//
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BOOL IsBusy(void) { return m_bBusy; }
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//
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// Lock and unlock the drawing area
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//
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BOOL IsLocked (void) { return m_bLocked; }
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void Unlock (void);
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void Lock (void);
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//
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// Realize the drawing area's palette
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//
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void RealizePalette( BOOL bBackground );//CHANGED BY RAND
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//
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// Selection functions
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//
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void SelectTool(WbTool* pToolNew); // Select drawing tool
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//
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// Update the selected object
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//
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void SetSelectionColor (COLORREF clr); // Change color
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void SetSelectionWidth (UINT uiNewWidth); // Select pen width
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void SetSelectionFont (HFONT hFont); // Select font
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//
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// External update functions
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//
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void PageCleared(void);
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void GraphicAdded (DCWbGraphic* pAddedGraphic);
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void GraphicDeleted (DCWbGraphic* pDeletedGraphic);
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//CHANGED BY RAND
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void GraphicUpdated (DCWbGraphic* pUpdatedGraphic, BOOL bUpdateMarker, BOOL bErase=TRUE );
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void PointerUpdated (DCWbGraphicPointer* pPointer,
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BOOL bForcedRemove = FALSE);
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void PointerRemoved (DCWbGraphicPointer* pPointer) { PointerUpdated(pPointer, TRUE); }
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void RemoveGraphicPointer(DCWbGraphicPointer *p)
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{
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POSITION pos = m_allPointers.Lookup(p);
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if (pos != NULL)
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{
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m_allPointers.RemoveAt(pos);
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}
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}
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//
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// Query functions
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//
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// Ask whether an object is currently selected
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BOOL GraphicSelected(void);
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// Return the currently selected graphic
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DCWbGraphic* GetSelection(void);
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// Clear current (multi object) selection
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void ClearSelection( void );
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// is pGraphic selected?
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BOOL IsSelected( DCWbGraphic *pGraphic )
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{return(m_pMarker->HasAMarker( pGraphic ) != NULL );}
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DCWbGraphic *GetHitObject( POINT surfacePos )
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{return( PG_SelectLast(m_hPage, surfacePos) );}
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// Ask whether the drawing area is zoomed
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BOOL Zoomed(void) { return (m_iZoomFactor != 1); }
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// Ask whether the drawing area is zoomed
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int ZoomOption(void) { return (m_iZoomOption); }
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int ZoomFactor(void) { return (m_iZoomFactor); }
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// Ask whether the text editor is active
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BOOL TextEditActive(void) { return m_bTextEditorActive; }
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// text editor clipboard
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void TextEditCopy( void ) {m_textEditor.Copy();}
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void TextEditCut( void ) {m_textEditor.Cut();}
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void TextEditPaste( void ) {m_textEditor.Paste();}
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// Resets text editor for window resizing
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void TextEditParentResize( void )
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{m_textEditor.ParentResize();}
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// Redraws editbox
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void RedrawTextEditbox(void)
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{m_textEditor.RedrawEditbox();}
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// Gets editbox bounding rect
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void GetTextEditBoundsRect(LPRECT lprc)
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{ m_textEditor.GetBoundsRect(lprc); }
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// Return the rectangle currently being viewed i.e. that portion of
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// the page surface that is within the window client area.
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void GetVisibleRect(LPRECT lprc);
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// Ask for the current page
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WB_PAGE_HANDLE Page(void) { return(m_hPage);}
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// Select objects inside rectSelect or ALL if rect is NULL
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void SelectMarkerFromRect(LPCRECT lprcSelect);
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DCWbGraphicMarker *GetMarker( void )
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{return( m_pMarker );}
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DCWbGraphic* SelectPreviousGraphicAt(DCWbGraphic* pGraphic, POINT point);
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void SetLClickIgnore( BOOL bIgnore )
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{m_bIgnoreNextLClick = bIgnore;}
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//
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// Delete a graphic
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//
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void DeleteGraphic(DCWbGraphic* pGraphic);
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//
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// Action members
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//
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void Attach(WB_PAGE_HANDLE hPage); // Attach a new page to the window
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void Detach(void) { Attach(NULL); } // Attach the empty page
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void DeleteSelection(void); // Delete selected graphic
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void BringToTopSelection(void); // Bring selected graphic to top
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void SendToBackSelection(void); // Send selected graphic to back
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void Clear(void); // Clear the workspace
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void Zoom(void); // Zoom the drawing area
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void GotoPosition(int x, int y); // Set scroll position
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// select an object
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void SelectGraphic(DCWbGraphic* pGraphic,
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BOOL bEnableForceAdd=FALSE, //CHANGED BY RAND
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BOOL bForceAdd=FALSE ); //CHANGED BY RAND
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//
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// A freehand graphic has been updated - redraw it
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//
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void GraphicFreehandUpdated(DCWbGraphic* pGraphic);
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//
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// Convert between surface and client co-ordinates
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//
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void SurfaceToClient(LPPOINT lppt);
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void ClientToSurface(LPPOINT lppt);
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void SurfaceToClient(LPRECT lprc);
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void ClientToSurface(LPRECT lprc);
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void MoveOntoSurface(LPPOINT lppt);
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void GetOrigin(LPPOINT lppt);
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HDC GetCachedDC (void) const {return(m_hDCCached); }
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void PrimeFont (HDC hDC, HFONT hFont, TEXTMETRIC* pTextMetrics);
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void UnPrimeFont (HDC hDC);
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void DrawMarker (HDC hDC);
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void PutMarker (HDC hDC, BOOL bDraw = TRUE );
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void RemoveMarker (HDC hDC);
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//
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// Cancel a drawing operation.
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//
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void CancelDrawingMode(void);
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void SetStartPaintGraphic( WB_GRAPHIC_HANDLE hStartPaintGraphic )
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{m_hStartPaintGraphic = PG_ZGreaterGraphic(m_hPage, m_hStartPaintGraphic, hStartPaintGraphic );}
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friend LRESULT CALLBACK DrawWndProc(HWND, UINT, WPARAM, LPARAM);
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//
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// Windows message handling
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//
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void OnPaint(void);
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void OnMouseMove(UINT flags, int x, int y);
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void OnLButtonDown(UINT flags, int x, int y);
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void OnLButtonUp(UINT flags, int x, int y);
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void OnRButtonDown(UINT flags, int x, int y);
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void OnSize(UINT flags, int cx, int cy);
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void OnHScroll(UINT code, UINT pos);
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void OnVScroll(UINT code, UINT pos);
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LRESULT OnEditColor(HDC hdc);
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void OnSetFocus(void);
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void OnActivate(UINT flags);
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LRESULT OnCursor(HWND hwnd, UINT hitTest, UINT msg);
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void OnTimer(UINT idTimer);
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void OnCancelMode(void);
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void OnContextMenu(int xScreen, int yScreen);
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protected:
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//
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// Update the window after an object has changed
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//
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void UpdateRectangles(LPCRECT lprc1, LPCRECT lprc2, BOOL bRepaint);
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//
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// Set the cursor to be used in the drawing area for the current state
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//
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BOOL SetCursorForState(void);
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//
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// Add an object to the end of the recorded list and display it in the
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// window.
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//
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void AddObjectLast(DCWbGraphic* pObject);
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//
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// Invalidate the client area rectangle corresponding to the surface
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// rectangle specified.
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//
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void InvalidateSurfaceRect(LPCRECT lprc, BOOL bErase = TRUE);
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//
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// Setup functions for the various drawing operations
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//
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BOOL RemotePointerSelect (POINT mousePos);
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void BeginSelectMode (POINT mousePos,
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BOOL bDontDrag=FALSE );
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void BeginDeleteMode (POINT mousePos);
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void BeginTextMode (POINT mousePos);
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void BeginFreehandMode (POINT mousePos);
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void BeginHighlightMode (POINT mousePos);
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void BeginLineMode (POINT mousePos);
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void BeginRectangleMode (POINT mousePos);
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void BeginEllipseMode (POINT mousePos);
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//
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// Mouse tracking functions. These are called for each mouse move event
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// (depending on the current drawing mode).
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//
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void TrackSelectMode (POINT mousePos);
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void TrackDeleteMode (POINT mousePos);
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void TrackFreehandMode (POINT mousePos);
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void TrackHighlightMode (POINT mousePos);
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void TrackLineMode (POINT mousePos);
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void TrackRectangleMode (POINT mousePos);
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void TrackEllipseMode (POINT mousePos);
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//
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// Completion functions for the various mode drawing operations.
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//
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void CompleteSelectMode();
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void CompleteDeleteMode();
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void CompleteMarkAreaMode();
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void CompleteTextMode();
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void CompleteFreehandMode();
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void CompleteLineMode();
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void CompleteRectangleMode();
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void CompleteFilledRectangleMode();
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void CompleteEllipseMode();
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void CompleteFilledEllipseMode();
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//
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// Complete a text object
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//
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void EndTextEntry(BOOL bAccept);
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//
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// Scroll the workspace to scrollPosition
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//
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void ScrollWorkspace (void);
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void DoScrollWorkspace (void);
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BOOL AutoScroll(int xPos, int yPos, BOOL bMoveCursor, int xCaret, int yCaret);
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//
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// Graphic object selection and marker manipulation
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//
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void DeselectGraphic(void);
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//
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// Remote pointer manipulation
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//
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void RemovePointers(HDC hDC, DCWbGraphicPointer* pPointerStart = NULL);
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void RemovePointers(HDC hDC, LPCRECT prcUpdate);
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void RemovePointers(HDC hDC, DCWbGraphicPointer* pPointerStart,
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LPCRECT prcUpdate);
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//
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// Redraw the pointers in the list specified. The pointers are drawn
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// from the start of the list to the end. If a NULL pointer is
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// specified, the undrawnPointers list is used.
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//
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void PutPointers(HDC hDC, COBLIST* pDrawList = NULL);
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void PrimeDC (HDC hDC);
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void UnPrimeDC (HDC hDC);
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//
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// List of pointers on the page
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// List of pointers that have been (temporarily undrawn). This list is
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// built by RemovePointers for use by PutPointers.
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//
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COBLIST m_allPointers;
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COBLIST m_undrawnPointers;
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//
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// Flag indicating that the drawing area is busy or locked
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//
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BOOL m_bBusy;
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BOOL m_bLocked;
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BOOL m_HourGlass; // we're busy doing something local
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//
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// Saved drawing attributes
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//
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HPEN m_hOldPen;
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HBRUSH m_hOldBrush;
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HPALETTE m_hOldPalette;
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HFONT m_hOldFont;
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HFONT m_hCurFont;
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//
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// Current offset of the client region of the window onto the picture
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//
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RECT m_rcSurface;
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public:
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SIZE m_originOffset;
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HWND m_hwnd;
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||
|
|
//
|
||
|
|
// Saved drawing attributes
|
||
|
|
//
|
||
|
|
HDC m_hDCCached;
|
||
|
|
HDC m_hDCWindow;
|
||
|
|
|
||
|
|
protected:
|
||
|
|
//
|
||
|
|
// Scrolling control
|
||
|
|
//
|
||
|
|
void SetScrollRange(int cx, int cy);
|
||
|
|
void ValidateScrollPos(void);
|
||
|
|
|
||
|
|
POINT m_posScroll;
|
||
|
|
POINT m_posZoomScroll;
|
||
|
|
BOOL m_zoomRestoreScroll;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Start and end points of most recent drawing operation
|
||
|
|
//
|
||
|
|
POINT m_ptStart;
|
||
|
|
POINT m_ptEnd;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Current drawing tool
|
||
|
|
//
|
||
|
|
WbTool * m_pToolCur;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Mouse button down flag
|
||
|
|
//
|
||
|
|
BOOL m_bLButtonDown;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Current page being used
|
||
|
|
//
|
||
|
|
WB_PAGE_HANDLE m_hPage;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Graphics object pointer used for tracking object
|
||
|
|
//
|
||
|
|
DCWbGraphic* m_pGraphicTracker;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Tick count used to determine when it is time to update the external
|
||
|
|
// copy of a graphic.
|
||
|
|
//
|
||
|
|
DWORD m_dwTickCount;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Marker for selection mode
|
||
|
|
//
|
||
|
|
DCWbGraphicMarker *m_pMarker;
|
||
|
|
DCWbGraphic* m_pSelectedGraphic;
|
||
|
|
BOOL m_bMarkerPresent;
|
||
|
|
BOOL m_bNewMarkedGraphic;
|
||
|
|
|
||
|
|
BOOL m_bTrackingSelectRect;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Text editor control
|
||
|
|
//
|
||
|
|
WbTextEditor m_textEditor;
|
||
|
|
BOOL m_bTextEditorActive;
|
||
|
|
DCWbGraphicText* m_pActiveText;
|
||
|
|
|
||
|
|
void ActivateTextEditor( BOOL bPutUpCusor );
|
||
|
|
void DeactivateTextEditor(void);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Text cursor control
|
||
|
|
//
|
||
|
|
BOOL m_bGotCaret;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Currently marked area
|
||
|
|
//
|
||
|
|
RECT m_rcMarkedArea;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Zoom variables
|
||
|
|
//
|
||
|
|
int m_iZoomFactor; // Current zoom factor
|
||
|
|
int m_iZoomOption; // Zoom factor to be used
|
||
|
|
|
||
|
|
|
||
|
|
HCURSOR m_hCursor; // handle of last cursor we displayed
|
||
|
|
// (or null if normal arrow cursor)
|
||
|
|
BOOL m_bIgnoreNextLClick;
|
||
|
|
|
||
|
|
WB_GRAPHIC_HANDLE m_hStartPaintGraphic;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif // __DRAW_HPP_
|