reactos/base/applications/mspaint/selectionmodel.h
Katayama Hirofumi MZ b8598e095d
[MSPAINT] Improve Undo/Redo handling of selection (#6035)
Consistent behavior of the application.
- Add ShiftPtStack and BuildMaskFromPtStack
  helper functions.
- Move some codes of selectionModel to
  mouse.cpp.
CORE-19226
2023-11-25 13:44:31 +09:00

68 lines
2 KiB
C++

/*
* PROJECT: PAINT for ReactOS
* LICENSE: LGPL-2.0-or-later (https://spdx.org/licenses/LGPL-2.0-or-later)
* PURPOSE: Keep track of selection parameters, notify listeners
* COPYRIGHT: Copyright 2015 Benedikt Freisen <b.freisen@gmx.net>
* Copyright 2019-2023 Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
*/
#pragma once
class SelectionModel
{
private:
HBITMAP m_hbmColor;
HBITMAP m_hbmMask;
public:
COLORREF m_rgbBack;
BOOL m_bShow;
BOOL m_bContentChanged;
CRect m_rc; // in image pixel coordinates
POINT m_ptHit; // in image pixel coordinates
CRect m_rcOld; // in image pixel coordinates
SelectionModel();
~SelectionModel();
void SetRectFromPoints(const POINT& ptFrom, const POINT& ptTo);
void setMask(const CRect& rc, HBITMAP hbmMask);
BOOL TakeOff();
void Landing();
BOOL IsLanded() const;
void HideSelection();
void DeleteSelection();
HITTEST hitTest(POINT ptCanvas);
void drawFrameOnCanvas(HDC hCanvasDC);
void moveSelection(INT xDelta, INT yDelta);
HBITMAP GetSelectionContents();
void DrawBackground(HDC hDCImage, COLORREF crBg);
void DrawBackgroundPoly(HDC hDCImage, COLORREF crBg);
void DrawBackgroundRect(HDC hDCImage, COLORREF crBg);
void DrawSelection(HDC hDCImage, COLORREF crBg = 0, BOOL bBgTransparent = FALSE);
void InsertFromHBITMAP(HBITMAP hbmColor, INT x = 0, INT y = 0, HBITMAP hbmMask = NULL);
// operation
void FlipHorizontally();
void FlipVertically();
void RotateNTimes90Degrees(int iN);
void StretchSkew(int nStretchPercentX, int nStretchPercentY, int nSkewDegX, int nSkewDegY);
void InvertSelection();
void Dragging(HITTEST hit, POINT pt);
void ClearMaskImage();
void ClearColorImage();
void NotifyContentChanged();
void StretchSelection(BOOL bShrink);
private:
SelectionModel(const SelectionModel&);
SelectionModel& operator=(const SelectionModel&);
void ShiftPtStack(INT dx, INT dy);
void SwapWidthAndHeight();
};