base/applications/mspaint/selectionmodel.h

   1 /*
   2  * PROJECT:     PAINT for ReactOS
   3  * LICENSE:     LGPL
   4  * FILE:        base/applications/mspaint/selectionmodel.h
   5  * PURPOSE:     Keep track of selection parameters, notify listeners
   6  * PROGRAMMERS: Benedikt Freisen
   7  *              Katayama Hirofumi MZ
   8  */
   9
  10 #pragma once
  11
  12 class SelectionModel
  13 {
  14 private:
  15     HBITMAP m_hbmColor;
  16     HBITMAP m_hbmMask;
  17     POINT *m_ptStack;
  18     int m_iPtSP;
  19
  20 public:
  21     BOOL m_bShow;
  22     CRect m_rc;    // in image pixel coordinates
  23     POINT m_ptHit; // in image pixel coordinates
  24
  25     SelectionModel();
  26     ~SelectionModel();
  27
  28     void ResetPtStack();
  29     void PushToPtStack(POINT pt);
  30     int PtStackSize() const;
  31     void SetRectFromPoints(const POINT& ptFrom, const POINT& ptTo);
  32     void BuildMaskFromPtStack();
  33
  34     BOOL TakeOff();
  35     void Landing();
  36
  37     HBITMAP GetBitmap() const;
  38     void GetSelectionContents(HDC hDCImage);
  39     void DrawFramePoly(HDC hDCImage);
  40     void DrawBackgroundPoly(HDC hDCImage, COLORREF crBg);
  41     void DrawBackgroundRect(HDC hDCImage, COLORREF crBg);
  42     void DrawSelection(HDC hDCImage, LPCRECT prc, COLORREF crBg = 0, BOOL bBgTransparent = FALSE);
  43     void InsertFromHBITMAP(HBITMAP hBm, INT x = 0, INT y = 0);
  44
  45     // operation
  46     void FlipHorizontally();
  47     void FlipVertically();
  48     void RotateNTimes90Degrees(int iN);
  49     void StretchSkew(int nStretchPercentX, int nStretchPercentY, int nSkewDegX, int nSkewDegY);
  50
  51     void CancelSelection();
  52     void NotifyRefreshNeeded();
  53     void Dragging(CANVAS_HITTEST hit, POINT pt);
  54     void ClearMask();
  55     void ClearColor();
  56
  57 private:
  58     SelectionModel(const SelectionModel&);
  59     SelectionModel& operator=(const SelectionModel&);
  60
  61     void ShiftPtStack(BOOL bPlus);
  62 };