selection.h

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/*
 * PROJECT:     PAINT for ReactOS
 * LICENSE:     LGPL
 * FILE:        base/applications/mspaint/selection.h
 * PURPOSE:     Window procedure of the selection window
 * PROGRAMMERS: Benedikt Freisen
 *              Katayama Hirofumi MZ
 */

#pragma once

class CSelectionWindow : public CWindowImpl<CSelectionWindow>
{
public:
    CSelectionWindow() : m_bMoved(FALSE)
    {
    }

    BOOL IsMoved() const        { return m_bMoved; }
    void IsMoved(BOOL bMoved)   { m_bMoved = bMoved; }

    void ForceRefreshSelectionContents();

    DECLARE_WND_CLASS_EX(_T("Selection"), CS_DBLCLKS, COLOR_BTNFACE)

    BEGIN_MSG_MAP(CSelectionWindow)
        MESSAGE_HANDLER(WM_PAINT, OnPaint)
        MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBkgnd)
        MESSAGE_HANDLER(WM_CREATE, OnCreate)
        MESSAGE_HANDLER(WM_SYSCOLORCHANGE, OnSysColorChange)
        MESSAGE_HANDLER(WM_SETCURSOR, OnSetCursor)
        MESSAGE_HANDLER(WM_LBUTTONDOWN, OnLButtonDown)
        MESSAGE_HANDLER(WM_MOUSEMOVE, OnMouseMove)
        MESSAGE_HANDLER(WM_MOUSEWHEEL, OnMouseWheel)
        MESSAGE_HANDLER(WM_LBUTTONUP, OnLButtonUp)
        MESSAGE_HANDLER(WM_MOVE, OnMove)
        MESSAGE_HANDLER(WM_PALETTEMODELCOLORCHANGED, OnPaletteModelColorChanged)
        MESSAGE_HANDLER(WM_TOOLSMODELSETTINGSCHANGED, OnToolsModelSettingsChanged)
        MESSAGE_HANDLER(WM_TOOLSMODELZOOMCHANGED, OnToolsModelZoomChanged)
        MESSAGE_HANDLER(WM_SELECTIONMODELREFRESHNEEDED, OnSelectionModelRefreshNeeded)
        MESSAGE_HANDLER(WM_CAPTURECHANGED, OnCaptureChanged)
        MESSAGE_HANDLER(WM_KEYDOWN, OnKeyDown)
    END_MSG_MAP()

    LRESULT OnPaint(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnEraseBkgnd(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnCreate(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnSysColorChange(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnSetCursor(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnLButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnMouseMove(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnMouseWheel(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnLButtonUp(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnPaletteModelColorChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnToolsModelSettingsChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnToolsModelZoomChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnSelectionModelRefreshNeeded(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnCaptureChanged(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnKeyDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnMove(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);

private:
    static const LPCTSTR m_lpszCursorLUT[9];
    BOOL m_bMoved;
    BOOL m_bMoving;
    int m_iAction;
    POINT m_ptPos;
    POINT m_ptFrac;
    POINT m_ptDelta;
    COLORREF m_rgbBack;

    int IdentifyCorner(int iXPos, int iYPos, int iWidth, int iHeight);
};

void ForceRefreshSelectionContents();