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AlphaImageList.cpp
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AlphaImageList.cpp
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/*********************************************************
* Simple IE-like Menu And Toolbar
* Version: 1.3
* Date: Semptember 1, 2003
* Autor: Michal Mecinski
* E-mail: mimec@mimec.w.pl
* WWW: http://www.mimec.w.pl
*
* Copyright (C) 2002-03 by Michal Mecinski
*********************************************************/
#include "stdafx.h"
#include "AlphaImageList.h"
#include <shlwapi.h>
#include <math.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// transparent color in non-32bit bitmaps
#define AIL_TRANSPARENT RGB(192,192,192)
CAlphaImageList::CAlphaImageList()
{
m_szImg = CSize(-1, -1);
}
CAlphaImageList::~CAlphaImageList()
{
}
BOOL CAlphaImageList::Create(int nWidth, int nHeight, int nStyle, int nCnt)
{
m_szImg = CSize(-1, -1);
m_ilNormal.DeleteImageList();
m_ilHot.DeleteImageList();
m_ilDisabled.DeleteImageList();
if (nStyle == AILS_NEW)
{
// check if comctl32.dll version 6.00 is present
BOOL bIsComCtl6 = FALSE;
HMODULE hComCtlDll = LoadLibrary("comctl32.dll");
if (hComCtlDll)
{
typedef HRESULT (CALLBACK *PFNDLLGETVERSION)(DLLVERSIONINFO*);
PFNDLLGETVERSION pfnDllGetVersion = (PFNDLLGETVERSION)GetProcAddress(hComCtlDll, "DllGetVersion");
if (pfnDllGetVersion)
{
DLLVERSIONINFO dvi;
ZeroMemory(&dvi, sizeof(dvi));
dvi.cbSize = sizeof(dvi);
HRESULT hRes = (*pfnDllGetVersion)(&dvi);
if (SUCCEEDED(hRes) && dvi.dwMajorVersion >= 6)
bIsComCtl6 = TRUE;
}
FreeLibrary(hComCtlDll);
}
if (bIsComCtl6)
m_nBmpDepth = ILC_COLOR32; // 32-bit images are supported
else
m_nBmpDepth = ILC_COLOR24;
}
else
m_nBmpDepth = ILC_COLOR4; // old style images
if (!m_ilNormal.Create(nWidth, nHeight, m_nBmpDepth | ILC_MASK, nCnt, 1))
return FALSE;
if (nStyle == AILS_NEW)
{
if (!m_ilHot.Create(nWidth, nHeight, m_nBmpDepth | ILC_MASK, nCnt, 1))
return FALSE;
if (!m_ilDisabled.Create(nWidth, nHeight, m_nBmpDepth | ILC_MASK, nCnt, 1))
return FALSE;
}
m_szImg = CSize(nWidth, nHeight);
return TRUE;
}
BOOL CAlphaImageList::AddBitmap(UINT nID)
{
if (m_szImg.cx <= 0)
return FALSE;
// load DIB from resources
HINSTANCE hInst = AfxFindResourceHandle(MAKEINTRESOURCE(nID), RT_BITMAP);
HBITMAP hBmp = (HBITMAP)LoadImage(hInst, MAKEINTRESOURCE(nID),
IMAGE_BITMAP, 0, 0, LR_DEFAULTSIZE | LR_CREATEDIBSECTION);
if (!hBmp)
return FALSE;
CBitmap bmp;
bmp.Attach(hBmp);
if (m_nBmpDepth == ILC_COLOR4)
{
// only one image list is needed
if (m_ilNormal.Add(&bmp, AIL_TRANSPARENT) < 0)
return FALSE;
}
else
{
CDC dcSrc;
dcSrc.CreateCompatibleDC(NULL);
struct
{
BITMAPINFOHEADER header;
COLORREF col[256];
} bmpi;
ZeroMemory(&bmpi, sizeof(BITMAPINFOHEADER));
bmpi.header.biSize = sizeof(BITMAPINFOHEADER);
GetDIBits(dcSrc, bmp, 0, 0, NULL, (BITMAPINFO*)&bmpi, DIB_RGB_COLORS);
int nDepth = bmpi.header.biBitCount;
if (m_nBmpDepth != ILC_COLOR32 || nDepth != 32)
{
bmpi.header.biBitCount = 24; // convert to 24-bit image
bmpi.header.biCompression = BI_RGB;
nDepth = 24;
}
int nSize = bmpi.header.biHeight * ((bmpi.header.biWidth * (nDepth==32 ? 4 : 3) + 3) & ~3);
// get source bitmap data
BYTE* pData = new BYTE[nSize];
GetDIBits(dcSrc, bmp, 0, bmpi.header.biHeight, pData, (BITMAPINFO*)&bmpi, DIB_RGB_COLORS);
// create new bitmap
BYTE* pDest = NULL;
hBmp = CreateDIBSection(dcSrc, (BITMAPINFO*)&bmpi, DIB_RGB_COLORS, (void**)&pDest, NULL, 0);
if (!hBmp)
{
delete[] pData;
return FALSE;
}
CBitmap bmpDest;
bmpDest.Attach(hBmp);
if (nDepth == 32)
{
memcpy(pDest, pData, nSize);
// alpha channel is used as image mask
if (m_ilNormal.Add(&bmpDest, (CBitmap*)NULL) < 0)
{
delete[] pData;
return FALSE;
}
// create grayscale image
for (int i=0; i<nSize; i+=4)
{
const double dGamma = 0.5; // lighten image
double dGray = (pData[i+2] * 0.299) + (pData[i+1] * 0.587) + (pData[i+0] * 0.114);
pDest[i+0] = pDest[i+1] = pDest[i+2] = (BYTE)(pow(dGray / 255.0, dGamma) * 255.0);
}
if (m_ilDisabled.Add(&bmpDest, (CBitmap*)NULL) < 0)
{
delete[] pData;
return FALSE;
}
// create saturated image
for (int i=0; i<nSize; i+=4)
{
const double dGamma = 1.4; // darken image
pDest[i+0] = (BYTE)(pow(pData[i+0] / 255.0, dGamma) * 255.0);
pDest[i+1] = (BYTE)(pow(pData[i+1] / 255.0, dGamma) * 255.0);
pDest[i+2] = (BYTE)(pow(pData[i+2] / 255.0, dGamma) * 255.0);
}
if (m_ilHot.Add(&bmpDest, (CBitmap*)NULL) < 0)
{
delete[] pData;
return FALSE;
}
delete[] pData;
}
else
{
memcpy(pDest, pData, nSize);
// create image mask from transparent color
if (m_ilNormal.Add(&bmpDest, AIL_TRANSPARENT) < 0)
{
delete[] pData;
return FALSE;
}
for (int i=0; i<nSize; i+=3)
{
// transparent color is not modified
if (RGB(pData[i+2], pData[i+1], pData[i+0]) == AIL_TRANSPARENT)
{
pDest[i+2] = GetRValue(AIL_TRANSPARENT);
pDest[i+1] = GetGValue(AIL_TRANSPARENT);
pDest[i+0] = GetBValue(AIL_TRANSPARENT);
}
else
{
const double dGamma = 0.5;
double dGray = (pData[i+2] * 0.299) + (pData[i+1] * 0.587) + (pData[i+0] * 0.114);
pDest[i+0] = pDest[i+1] = pDest[i+2] = (BYTE)(pow(dGray / 255.0, dGamma) * 255.0);
}
}
if (m_ilDisabled.Add(&bmpDest, AIL_TRANSPARENT) < 0)
{
delete[] pData;
return FALSE;
}
for (int i=0; i<nSize; i+=3)
{
if (RGB(pData[i+2], pData[i+1], pData[i+0]) == AIL_TRANSPARENT)
{
pDest[i+2] = GetRValue(AIL_TRANSPARENT);
pDest[i+1] = GetGValue(AIL_TRANSPARENT);
pDest[i+0] = GetBValue(AIL_TRANSPARENT);
}
else
{
const double dGamma = 1.4;
pDest[i+0] = (BYTE)(pow(pData[i+0] / 255.0, dGamma) * 255.0);
pDest[i+1] = (BYTE)(pow(pData[i+1] / 255.0, dGamma) * 255.0);
pDest[i+2] = (BYTE)(pow(pData[i+2] / 255.0, dGamma) * 255.0);
}
}
if (m_ilHot.Add(&bmpDest, AIL_TRANSPARENT) < 0)
{
delete[] pData;
return FALSE;
}
delete[] pData;
}
}
return TRUE;
}
BOOL CAlphaImageList::Draw(CDC* pDC, CPoint ptPos, int nImgList, int nIndex)
{
if (m_szImg.cx <= 0)
return FALSE;
if (m_nBmpDepth >= ILC_COLOR24)
{
switch (nImgList)
{
case AIL_NORMAL:
return m_ilNormal.Draw(pDC, nIndex, ptPos, ILD_NORMAL);
case AIL_HOT:
return m_ilHot.Draw(pDC, nIndex, ptPos, ILD_NORMAL);
case AIL_DISABLED:
return m_ilDisabled.Draw(pDC, nIndex, ptPos, ILD_NORMAL);
default:
return FALSE;
}
}
else // old style image
{
switch (nImgList)
{
case AIL_NORMAL:
case AIL_HOT:
return m_ilNormal.Draw(pDC, nIndex, ptPos, ILD_NORMAL);
case AIL_DISABLED:
{
CDC dcBmpBW;
dcBmpBW.CreateCompatibleDC(pDC);
// create a black and white bitmap
struct {
BITMAPINFOHEADER bmiHeader;
RGBQUAD bmiColors[2];
} bmpiBW = {{
sizeof(BITMAPINFOHEADER),
m_szImg.cx, m_szImg.cy, 1, 1, BI_RGB, 0, 0, 0, 0, 0
}, {
{ 0x00, 0x00, 0x00, 0x00 }, { 0xFF, 0xFF, 0xFF, 0x00 }
}};
VOID *pTemp;
HBITMAP hBmpBW = CreateDIBSection(dcBmpBW, (LPBITMAPINFO)&bmpiBW,
DIB_RGB_COLORS, &pTemp, NULL, 0);
if (!hBmpBW)
return FALSE;
CBitmap bmpBW;
bmpBW.Attach(hBmpBW);
dcBmpBW.SelectObject(&bmpBW);
// draw the image with white background
COLORREF crOld = m_ilNormal.SetBkColor(RGB(255,255,255));
if (!m_ilNormal.Draw(&dcBmpBW, nIndex, CPoint(0,0), ILD_NORMAL))
return FALSE;
m_ilNormal.SetBkColor(crOld);
BOOL bFlat = FALSE;
SystemParametersInfo(SPI_GETFLATMENU, 0, &bFlat, 0);
CBrush brush;
if (!bFlat) // highlight is not drawn in XP-style menus
{
brush.CreateSysColorBrush(COLOR_3DHILIGHT);
pDC->SelectObject(&brush);
pDC->BitBlt(ptPos.x + 1, ptPos.y + 1, m_szImg.cx, m_szImg.cy, &dcBmpBW, 0, 0, 0xB8074A);
brush.DeleteObject();
}
// draw image with the shadow color
brush.CreateSysColorBrush(COLOR_3DSHADOW);
pDC->SelectObject(&brush);
pDC->BitBlt(ptPos.x, ptPos.y, m_szImg.cx, m_szImg.cy, &dcBmpBW, 0, 0, 0xB8074A);
}
default:
return FALSE;
}
}
}
HIMAGELIST CAlphaImageList::GetImageList(int nImgList)
{
switch (nImgList)
{
case AIL_NORMAL:
return m_ilNormal.m_hImageList;
case AIL_HOT:
return m_ilHot.m_hImageList;
case AIL_DISABLED:
return m_ilDisabled.m_hImageList;
default:
return NULL;
}
}