bool CBitmapInfo::LoadBitmap(CBitmap& Bmp)
{
ASSERT(Bmp.m_hObject == NULL); // must be uninitialized, else handle leaks
bool retc = FALSE;
HDC hDC = GetDC(NULL);
Bmp.m_hObject = CreateCompatibleBitmap(hDC, m_Bmp.bmWidth, m_Bmp.bmHeight);
BITMAPINFO bi;
SetBitmapInfo(bi);
if (SetDIBits(hDC, Bmp, 0, m_Bmp.bmHeight, m_Bmp.bmBits, &bi, DIB_RGB_COLORS))
retc = TRUE;
ReleaseDC(NULL, hDC);
return(retc);
}
bool CBitmapInfo::StoreBitmap(CBitmap& Bmp)
{
if (!Bmp.GetBitmap(&m_Bmp))
return(FALSE);
m_Bits.SetSize(m_Bmp.bmWidthBytes * m_Bmp.bmHeight);
m_Bmp.bmBits = m_Bits.GetData();
bool retc = FALSE;
HDC hDC = GetDC(NULL);
BITMAPINFO bi;
SetBitmapInfo(bi);
if (GetDIBits(hDC, Bmp, 0, m_Bmp.bmHeight, m_Bmp.bmBits, &bi, DIB_RGB_COLORS))
retc = TRUE;
ReleaseDC(NULL, hDC);
return(retc);
}
bool DIBitmap::Create(int w, int h, int d, RGBQUAD* pColorTable)
{
if (hMemDC != NULL || hBmp != NULL) {
return false; // 既に出来てるよ
}
// メモリDC
hMemDC = CreateCompatibleDC(NULL);
if (hMemDC == NULL) {
return false;
}
// BITMAPINFO設定
BITMAPINFO* pInfo;
int biSize = sizeof(BITMAPINFO);
int dCnt = GetBitmapColorCount(d);
if (d <= 8) {
// カラーテーブルあり
biSize += sizeof(RGBQUAD) * (dCnt - 1);
pInfo = (BITMAPINFO*)malloc(biSize);
if (pInfo == NULL) {
return false;
}
if (pColorTable == NULL) {
// テーブルの指定が無いのでとりあえず真っ黒パレット
for (int i = 0; i < dCnt; ++i) {
pInfo->bmiColors[i].rgbRed = 0;
pInfo->bmiColors[i].rgbGreen = 0;
pInfo->bmiColors[i].rgbBlue = 0;
pInfo->bmiColors[i].rgbReserved = 0;
}
} else {
// テーブルをコピー
for (int i = 0; i < dCnt; ++i) {
pInfo->bmiColors[i].rgbRed = pColorTable[i].rgbRed;
pInfo->bmiColors[i].rgbGreen = pColorTable[i].rgbGreen;
pInfo->bmiColors[i].rgbBlue = pColorTable[i].rgbBlue;
pInfo->bmiColors[i].rgbReserved = 0;
}
}
} else {
// カラーテーブル無し
pInfo = (BITMAPINFO*)malloc(biSize);
if (pInfo == NULL) {
Release();
return false;
}
}
SetBitmapInfo(pInfo, w, h, d);
// DIBセクション作成
pBits = NULL;
hBmp = CreateDIBSection(NULL, pInfo, DIB_RGB_COLORS, &pBits, NULL, 0);
if (hBmp == NULL) {
free(pInfo);
Release();
return false;
}
free(pInfo);
// 関連付け
SelectObject(hMemDC, hBmp);
this->w = w;
this->h = h > 0 ? h : -h;
this->d = d;
return true;
}
