reactos/base/applications/mspaint/palette.h

/*
 * PROJECT:    PAINT for ReactOS
 * LICENSE:    LGPL-2.0-or-later (https://spdx.org/licenses/LGPL-2.0-or-later)
 * PURPOSE:    Window procedure of the palette window
 * COPYRIGHT:  Copyright 2015 Benedikt Freisen <b.freisen@gmx.net>
 */

#pragma once

#define CXY_COLORBOX   16 /* width / height of a normal color box */
#define CXY_BIGBOX     (CXY_COLORBOX * 2) /* width / height of the big box */
#define CY_PALETTE     (8 + CXY_BIGBOX + 8)

class CPaletteWindow : public CWindowImpl<CPaletteWindow>
{
public:
    DECLARE_WND_CLASS_EX(L"Palette", CS_DBLCLKS, COLOR_BTNFACE)

    BEGIN_MSG_MAP(CPaletteWindow)
        MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBkgnd)
        MESSAGE_HANDLER(WM_PAINT, OnPaint)
        MESSAGE_HANDLER(WM_LBUTTONDOWN, OnLButtonDown)
        MESSAGE_HANDLER(WM_RBUTTONDOWN, OnRButtonDown)
        MESSAGE_HANDLER(WM_LBUTTONDBLCLK, OnLButtonDblClk)
        MESSAGE_HANDLER(WM_RBUTTONDBLCLK, OnRButtonDblClk)
        MESSAGE_HANDLER(WM_MOUSEMOVE, OnMouseMove)
        MESSAGE_HANDLER(WM_LBUTTONUP, OnLButtonUp)
        MESSAGE_HANDLER(WM_PALETTEMODELCOLORCHANGED, OnPaletteModelColorChanged)
    END_MSG_MAP()

    CPaletteWindow();
    virtual ~CPaletteWindow();

protected:
    HBITMAP m_hbmCached; // Cached buffer bitmap

    LRESULT OnEraseBkgnd(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnPaint(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnLButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnRButtonDown(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnLButtonDblClk(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnRButtonDblClk(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
    LRESULT OnMouseMove(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);

protected:
    INT DoHitTest(INT xPos, INT yPos) const;
};