428 lines
11 KiB
C++
428 lines
11 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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#include <oblist.h>
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#define HIT_WINDOW 1
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#define MAKE_HIT_RECT(r, p ) \
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::SetRect(&r, p.x-HIT_WINDOW, p.y-HIT_WINDOW, p.x+HIT_WINDOW, p.y+HIT_WINDOW);
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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 8
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#define TIMER_REMOTE_POINTER_UPDATE 9
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#define EqualPoint(pt1, pt2) (((pt1).x == (pt2).x) && ((pt1).y == (pt2).y))
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#define DRAW_WIDTH 1280
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#define DRAW_HEIGHT 1024
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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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extern WorkspaceObj* g_pCurrentWorkspace;
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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 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 SetLock(BOOL bLock){ m_bLocked = bLock; }
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void Unlock (void);
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void Lock (void);
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BOOL IsSynced (void) { return m_bSync; }
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void SetSync(BOOL bSync) { m_bSync = bSync; }
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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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//
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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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T126Obj* GetSelection(void);
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// Clear current (multi object) selection
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void ClearSelection( void );
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T126Obj *GetHitObject( POINT surfacePos )
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{return( PG_SelectLast(g_pCurrentWorkspace, 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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//
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// Complete a text object
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//
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void EndTextEntry(BOOL bAccept);
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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_pTextEditor->Copy();}
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void TextEditCut( void ) {m_pTextEditor->Cut();}
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void TextEditPaste( void ) {m_pTextEditor->Paste();}
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// Resets text editor for window resizing
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void TextEditParentResize( void )
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{m_pTextEditor->ParentResize();}
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// Redraws editbox
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void RedrawTextEditbox(void)
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{m_pTextEditor->RedrawEditbox();}
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// Gets editbox bounding rect
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void GetTextEditBoundsRect(LPRECT lprc)
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{ m_pTextEditor->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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// Select objects inside rectSelect or ALL if rect is NULL
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void SelectMarkerFromRect(LPCRECT lprcSelect);
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DrawObj *GetMarker( void )
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{return( m_pMarker );}
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T126Obj* SelectPreviousGraphicAt(T126Obj* 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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// Action members
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//
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void Attach(WorkspaceObj * pNewWorkspace); // 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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LRESULT BringToTopSelection(BOOL editedLocally, T126Obj * pT126Obj = NULL); // Bring selected graphic to top
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LRESULT SendToBackSelection(BOOL editedLocally, T126Obj * pT126Obj = NULL); // 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(T126Obj* 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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BOOL MoveSelectedGraphicBy(LONG x, LONG y);
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void EraseInitialDrawFinal(LONG x, LONG y, BOOL editedLocally, T126Obj* pObj = NULL);
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void EraseSelectedDrawings();
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//
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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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T126Obj* GetSelectedGraphic (void){ return m_pSelectedGraphic;}
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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);
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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 (void);
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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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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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// 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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// 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 );
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void BeginDeleteMode (POINT mousePos);
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void BeginTextMode (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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//
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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 BeginDrawingMode(POINT surfacePos);
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void TrackDrawingMode(POINT surfacePos);
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void CompleteDrawingMode();
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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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//
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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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// 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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BOOL m_bSync;
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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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//
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// Saved drawing attributes
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//
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HDC m_hDCCached;
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HDC m_hDCWindow;
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HBRUSH m_hMarkerBrush;
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RECT m_selectorRect;
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WbTextEditor* m_pTextEditor;
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void DeactivateTextEditor(void);
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protected:
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//
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// Scrolling control
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//
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void SetScrollRange(int cx, int cy);
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void ValidateScrollPos(void);
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POINT m_posScroll;
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POINT m_posZoomScroll;
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BOOL m_zoomRestoreScroll;
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//
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// Start and end points of most recent drawing operation
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//
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POINT m_ptStart;
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POINT m_ptEnd;
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//
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// Current drawing tool
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//
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WbTool * m_pToolCur;
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//
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// Mouse button down flag
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//
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BOOL m_bLButtonDown;
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//
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// Graphics object pointer used for tracking object
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//
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DrawObj* m_pGraphicTracker;
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//
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// Tick count used to determine when it is time to update the external
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// copy of a graphic.
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//
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DWORD m_dwTickCount;
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//
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// Marker for selection mode
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//
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DrawObj* m_pMarker;
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T126Obj* m_pSelectedGraphic;
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BOOL m_bMarkerPresent;
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BOOL m_bNewMarkedGraphic;
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BOOL m_bTrackingSelectRect;
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//
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// Text editor control
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//
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BOOL m_bTextEditorActive;
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// TextObj* m_pActiveText;
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void ActivateTextEditor( BOOL bPutUpCusor );
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//
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// Text cursor control
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//
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BOOL m_bGotCaret;
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//
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// Currently marked area
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//
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RECT m_rcMarkedArea;
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//
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// Zoom variables
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//
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int m_iZoomFactor; // Current zoom factor
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int m_iZoomOption; // Zoom factor to be used
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HCURSOR m_hCursor; // handle of last cursor we displayed
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// (or null if normal arrow cursor)
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BOOL m_bIgnoreNextLClick;
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};
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#endif // __DRAW_HPP_
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