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[MSPAINT] Establish Undo/Redo management (#5347)

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- Painting the canvas is done by overlaying the multiple layers.
- Drawing each overlay is implemented as polymorphism of OOP.
- Refine the Undo/Redo mechanism.
- Some adjustments.
CORE-17969
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Katayama Hirofumi MZ 2023-06-17 21:15:35 +09:00 • committed by GitHub
parent b7071f67a8
commit e8c7e30030
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25 changed files with 721 additions and 504 deletions
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4
base/applications/mspaint/canvas.h
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@ -33,6 +33,7 @@ public:
MESSAGE_HANDLER(WM_CANCELMODE, OnCancelMode)
MESSAGE_HANDLER(WM_CAPTURECHANGED, OnCaptureChanged)
MESSAGE_HANDLER(WM_CTLCOLOREDIT, OnCtlColorEdit)
MESSAGE_HANDLER(WM_PALETTEMODELCOLORCHANGED, OnPaletteModelColorChanged)
END_MSG_MAP()
CCanvasWindow();
@ -55,7 +56,7 @@ protected:
CANVAS_HITTEST m_hitSelection;
CANVAS_HITTEST m_whereHit;
POINT m_ptOrig; // The origin of drag start
HBITMAP m_hbmCached; // The cached buffer bitmap
HBITMAP m_ahbmCached[2]; // The cached buffer bitmaps
CRect m_rcNew;
CANVAS_HITTEST CanvasHitTest(POINT pt);
@ -87,6 +88,7 @@ protected:
LRESULT OnCancelMode(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnCaptureChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnCtlColorEdit(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnPaletteModelColorChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnLRButtonDown(BOOL bLeftButton, UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
LRESULT OnLRButtonDblClk(BOOL bLeftButton, UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);