VC中画UML图源代码

/* ========================================================================== Class : CDiagramEditor Author : Johan Rosengren, Abstrakt Mekanik AB Date : 2004-03-29 Purpose : "CDiagramEditor" encapsulates a basic vector editor geared towards diagrams rather than graphics. It supports virtual screens both smaller and larger than the window, snap to grid, copy/paste, unlimited undo, zoom etc. It can be added to both dialogbox- and doc/view apps due to the use of a separate container for data. Normally, this class need only to be inherited from when the drawing functionality is insufficient - many of the settings can be modified through member accessors. Description : The class derives from "CWnd", and handles Windows messages relevant to the operations. Usage : ======================================================================== Changes : 8/4 2004 SendMessageToObjects sets TRUE flag sending message only to selected objects. 9/4 2004 Made some message mapping functions virtual to allow enhancements in derived classes. 9/4 2004 Added accessors for states to allow access for derived classes 28/4 2004 Set interact mode to MODE_NONE after ctrl+clicking item (to not move lines) 28/4 2004 Setting scrollbar positions to zero in Clear 29/4 2004 Sending this window as a parent to the property dialog. This is to be able to redraw the editor properly after changes to the dialog. 30/4 2004 Changed c-style casts to static_cast 30/4 2004 Remove ShowProperties-const-ness. ======================================================================== 14/5 2004 Added access to m_subMode in SetInteractMode 14/5 2004 Made OnObjectCommand virtual to allow interception in derived classes. 15/5 2004 Made GetBackgroundColor const. 20/5 2004 Made SelectAll virtual. 24/5 2004 Added virtual size check against the client rect in HScroll and VScroll (Graham). ======================================================================== 24/6 2004 Corrected bug in SetZoom, where the minimum zoom value was not honoured (pgrohs). 24/6 2004 Zeroing m_internalData after delete to avoid crash. (pgrohs). 26/6 2004 Added group handling (Unruled Boy). ======================================================================== 26/6 2004 Corrected bug in alignment handling - all objects, not only selected, where modified. Also made functions virtual. 29/6 2004 Added ZoomToFitScreen and mousewheel-handling (John A. Johnson). 30/6 2004 Added panning (John A. Johnson). 3/7 2004 Made AddObject virtual and added the virtual MoveObject function. This is to allow trapping of added or moved objects in the editor in derived classes. Also made clipboard-functions and DeleteAllSelected virtual. 5/7 2004 Made Clear virtual. 5/7 2004 Added virtual GetCursor function. 6/7 2004 Correction in VirtualToScreen, not deducting scrollbar positions any longer (Wolfgang Busch). 6/7 2004 Coordinate conversion functions made public. (Wolfgang Busch). ======================================================================== 12/7 2004 Added scroll wheel mode. By calling SetScrollWheelMode( WHEEL_SCROLL/WHEEL_ZOOM), the scroll wheel will either scroll or zoom. ======================================================================== 16/7 2004 Added virtual to more message handlers, among them the scrollbar ones. 16/7 2004 Added virtual to SetZoom. 16/7 2004 Added virtual functions to set the scrollbar positions to get one single point where this is made. 25/7 2004 Checking if the cursor is outside of restraint when placing an item in OnLButtonDown. ======================================================================== 3/8 2004 Added ScrollIntoView commands 4/8 2004 Fixed bug with selection markers - virtualization of the mouse coordinates was in discord with the selection marker rectangles. (Marc G) ======================================================================== 9/8 2004 Added new ScrollIntoView command taking object as an inparam. 19/8 2004 Fixed bug in hit testing objects when zooming in OnLButtonDown (Marc G) ======================================================================== 28/8 2004 Added check for non-normalized rect when hit-testing in OnLButtonDown, as lines have them. ========================================================================*/ #include "stdafx.h" #include "DiagramEditor.h" #include <math.h> #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif #pragma warning( disable : 4706 ) ///////////////////////////////////////////////////////////////////////////// // CDiagramEditor construction/destruction/initialization CDiagramEditor::CDiagramEditor() /* ============================================================ Function : CDiagramEditor::CDiagramEditor Description : Constructor Access : Public Return : void Parameters : none Usage : ============================================================*/ { m_bkgndCol = ::GetSysColor( COLOR_WINDOW ); m_nonClientBkgndCol = ::GetSysColor( COLOR_3DSHADOW ); m_gridCol = RGB( 192, 192, 192 ); m_grid = TRUE; m_gridStyle = PS_SOLID; m_gridSize = CSize( 8, 8 ); m_snap = FALSE; m_bgResize = FALSE; m_bgResizeZone = 10; m_bgResizeSelected = FALSE; m_markerSize = CSize( 8, 8 ); m_drawObj = NULL; m_objs = NULL; m_multiSelObj = NULL; m_internalData = NULL; m_restraint = RESTRAINT_NONE; m_leftMargin = 8; m_topMargin = 8; m_rightMargin = 8; m_bottomMargin = 16; m_margin = FALSE; m_marginColor = RGB( 128, 128, 255 ); m_popupMenu = NULL; m_multiDraw = FALSE; m_zoomFactor = 0.01; m_zoomMax = 10.0; m_zoomMin = 0.0; m_panningTimer = 100; m_panning = FALSE; m_keyInterface = KEY_ALL; m_cursorNorth = ::LoadCursor( NULL, IDC_SIZENS ); m_cursorNorthEast = ::LoadCursor( NULL, IDC_SIZENESW ); m_cursorEast = ::LoadCursor( NULL, IDC_SIZEWE ); m_cursorSouthEast = ::LoadCursor( NULL, IDC_SIZENWSE ); m_cursorSouth = ::LoadCursor( NULL, IDC_SIZENS ); m_cursorSouthWest = ::LoadCursor( NULL, IDC_SIZENESW ); m_cursorWest = ::LoadCursor( NULL, IDC_SIZEWE ); m_cursorNorthWest = ::LoadCursor( NULL, IDC_SIZENWSE ); SetScrollWheelMode( WHEEL_SCROLL ); Clear(); } CDiagramEditor::~CDiagramEditor() /* ============================================================ Function : CDiagramEditor::~CDiagramEditor Description : Destructor Access : Public Return : void Parameters : none Usage : ============================================================*/ { delete m_drawObj; delete m_internalData; delete m_popupMenu; } void CDiagramEditor::Clear() /* ============================================================ Function : CDiagramEditor::Clear Description : Clears internal run-time variables. Access : Public Return : void Parameters : none Usage : Call to reset internal states. ============================================================*/ { // Clearing internal states and vars m_selectionRect.SetRectEmpty(); m_interactMode = MODE_NONE; m_zoom = 1.0; m_bgResizeSelected = FALSE; m_deltaPoint = CSize( 0, 0 ); m_multiSelObj = NULL; m_drawing = FALSE; SetPanning( FALSE ); delete m_drawObj; m_drawObj = NULL;