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b8598e095d
Consistent behavior of the application. - Add ShiftPtStack and BuildMaskFromPtStack helper functions. - Move some codes of selectionModel to mouse.cpp. CORE-19226
67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
/*
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* PROJECT: PAINT for ReactOS
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* LICENSE: LGPL-2.0-or-later (https://spdx.org/licenses/LGPL-2.0-or-later)
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* PURPOSE: Undo and redo functionality
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* COPYRIGHT: Copyright 2015 Benedikt Freisen <b.freisen@gmx.net>
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*/
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#pragma once
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/* HISTORYSIZE = number of possible undo-steps + 1 */
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#define HISTORYSIZE 11
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struct IMAGE_PART
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{
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CRect m_rcPart;
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HBITMAP m_hbmImage;
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BOOL m_bPartial;
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void clear();
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};
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class ImageModel
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{
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public:
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ImageModel();
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virtual ~ImageModel();
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HDC GetDC();
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BOOL CanUndo() const { return m_undoSteps > 0; }
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BOOL CanRedo() const { return m_redoSteps > 0; }
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void PushImageForUndo();
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void PushImageForUndo(HBITMAP hbm);
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void PushImageForUndo(const RECT& rcPartial);
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void Undo(BOOL bClearRedo = FALSE);
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void Redo(void);
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void ClearHistory(void);
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void Crop(int nWidth, int nHeight, int nOffsetX = 0, int nOffsetY = 0);
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void SaveImage(LPCWSTR lpFileName);
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BOOL IsImageSaved() const;
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void StretchSkew(int nStretchPercentX, int nStretchPercentY, int nSkewDegX = 0, int nSkewDegY = 0);
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int GetWidth() const;
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int GetHeight() const;
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HBITMAP CopyBitmap();
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HBITMAP LockBitmap();
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void UnlockBitmap(HBITMAP hbmLocked);
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void InvertColors();
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void FlipHorizontally();
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void FlipVertically();
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void RotateNTimes90Degrees(int iN);
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void Clamp(POINT& pt) const;
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void NotifyImageChanged();
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BOOL IsBlackAndWhite();
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void PushBlackAndWhite();
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protected:
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HDC m_hDrawingDC; // The device context for this class
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HBITMAP m_hbmMaster; // The master bitmap
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int m_currInd; // The current index in m_hBms
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int m_undoSteps; // The undo-able count
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int m_redoSteps; // The redo-able count
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IMAGE_PART m_historyItems[HISTORYSIZE]; // A ring buffer of IMAGE_PARTs
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HGDIOBJ m_hbmOld;
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void SwapPart();
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void PushDone();
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};
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