/////////////////////////////////////////////////////////////////////////////
// colorBtn.cpp : implementation file for the CColorButton class
//
// Written by Bob Ryan (ryan@cyberzone.net)
// Copyright (c) 1998.
//
// This code may be freely distributable in any application. If
// you make any changes to the source, please let me know so that
// I might make a better version of the class.
//
// This file is provided "as is" with no expressed or implied warranty.
// The author accepts no liability for any damage/loss of business that
// this product may cause.
//
/////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "colorbtn.h"
#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
// no automatic class substitution for this file!
#ifdef CColorButton
#undef CColorButton CColorButton
#endif
// CColorButton
IMPLEMENT_DYNAMIC(CColorButton, CButton)
CColorButton::CColorButton()
{
#if (_MFC_VER < 0x0250)
hwndOwner = NULL; // initialize hwndOwner for GetOwner() and SetOwner() support in MFC < 2.5
#endif
}
CColorButton::~CColorButton()
{
}
BOOL CColorButton::Attach(const UINT nID, CWnd* pParent, const COLORREF BGColor, const COLORREF FGColor, const COLORREF DisabledColor, const UINT nBevel)
{
if (!SubclassDlgItem(nID, pParent))
return FALSE;
m_fg = FGColor;
m_bg = BGColor;
m_disabled = DisabledColor;
m_bevel = nBevel;
return TRUE;
}
void CColorButton::DrawItem(LPDRAWITEMSTRUCT lpDIS)
{
CDC* pDC = CDC::FromHandle(lpDIS->hDC);
UINT state = lpDIS->itemState;
CRect focusRect, btnRect;
focusRect.CopyRect(&lpDIS->rcItem);
btnRect.CopyRect(&lpDIS->rcItem);
//
// Set the focus rectangle to just past the border decoration
//
focusRect.left += 4;
focusRect.right -= 4;
focusRect.top += 4;
focusRect.bottom -= 4;
//
// Retrieve the button's caption
//
const int bufSize = 512;
TCHAR buffer[bufSize];
GetWindowText(buffer, bufSize);
//
// Draw and label the button using draw methods
//
DrawFilledRect(pDC, btnRect, GetBGColor());
DrawFrame(pDC, btnRect, GetBevel());
DrawButtonText(pDC, btnRect, buffer, GetFGColor());
//
// Now, depending upon the state, redraw the button (down image) if it is selected,
// place a focus rectangle on it, or redisplay the caption if it is disabled
//
if (state & ODS_FOCUS) {
DrawFocusRect(lpDIS->hDC, (LPRECT)&focusRect);
if (state & ODS_SELECTED){
DrawFilledRect(pDC, btnRect, GetBGColor());
DrawFrame(pDC, btnRect, -1);
DrawButtonText(pDC, btnRect, buffer, GetFGColor());
DrawFocusRect(lpDIS->hDC, (LPRECT)&focusRect);
}
}
else if (state & ODS_DISABLED) {
//COLORREF disabledColor = bg ^ 0xFFFFFF; // contrasting color
DrawButtonText(pDC, btnRect, buffer, GetDisabledColor());
}
}
void CColorButton::DrawFrame(CDC *DC, CRect R, int Inset)
{
COLORREF dark, light, tlColor, brColor;
int i, m, width;
width = (Inset < 0)? -Inset : Inset;
for (i = 0; i < width; i += 1) {
m = 255 / (i + 2);
dark = PALETTERGB(m, m, m);
m = 192 + (63 / (i + 1));
light = PALETTERGB(m, m, m);
if ( width == 1 ) {
light = RGB(255, 255, 255);
dark = RGB(128, 128, 128);
}
if ( Inset < 0 ) {
tlColor = dark;
brColor = light;
}
else {
tlColor = light;
brColor = dark;
}
DrawLine(DC, R.left, R.top, R.right, R.top, tlColor); // Across top
DrawLine(DC, R.left, R.top, R.left, R.bottom, tlColor); // Down left
if ( (Inset < 0) && (i == width - 1) && (width > 1) ) {
DrawLine(DC, R.left + 1, R.bottom - 1, R.right, R.bottom - 1, RGB(1, 1, 1));// Across bottom
DrawLine(DC, R.right - 1, R.top + 1, R.right - 1, R.bottom, RGB(1, 1, 1)); // Down right
}
else {
DrawLine(DC, R.left + 1, R.bottom - 1, R.right, R.bottom - 1, brColor); // Across bottom
DrawLine(DC, R.right - 1, R.top + 1, R.right - 1, R.bottom, brColor); // Down right
}
InflateRect(R, -1, -1);
}
}
void CColorButton::DrawFilledRect(CDC *DC, CRect R, COLORREF color)
{
CBrush B;
B.CreateSolidBrush(color);
DC->FillRect(R, &B);
}
void CColorButton::DrawLine(CDC *DC, CRect EndPoints, COLORREF color)
{
CPen newPen;
newPen.CreatePen(PS_SOLID, 1, color);
CPen *oldPen = DC->SelectObject(&newPen);
DC->MoveTo(EndPoints.left, EndPoints.top);
DC->LineTo(EndPoints.right, EndPoints.bottom);
DC->SelectObject(oldPen);
newPen.DeleteObject();
}
void CColorButton::DrawLine(CDC *DC, long left, long top, long right, long bottom, COLORREF color)
{
CPen newPen;
newPen.CreatePen(PS_SOLID, 1, color);
CPen *oldPen = DC->SelectObject(&newPen);
DC->MoveTo(left, top);
DC->LineTo(right, bottom);
DC->SelectObject(oldPen);
newPen.DeleteObject();
}
void CColorButton::DrawButtonText(CDC *DC, CRect R, const char *Buf, COLORREF TextColor)
{
COLORREF prevColor = DC->SetTextColor(TextColor);
DC->SetBkMode(TRANSPARENT);
DC->DrawText(Buf, strlen(Buf), R, DT_CENTER|DT_VCENTER|DT_SINGLELINE);
DC->SetTextColor(prevColor);
}
