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#include ".image.h"
MLImage::MLImage(void)
{
loader = NULL;
loaderDelete = TRUE;
ResetData();
}
MLImage::MLImage(IMGLOADFUNC loader, BOOL deleteDone)
{
ResetData();
SetLoader(loader, deleteDone, FALSE);
}
MLImage::MLImage(int width, int height)
{
loader = NULL;
ResetData();
Init(width,height);
}
MLImage::~MLImage(void)
{
ResetData();
}
INT_PTR MLImage::SetLoader(IMGLOADFUNC loader, BOOL deleteDone, BOOL forceLoad)
{
this->loader = loader;
this->loaderDelete = deleteDone;
if (loader && forceLoad) Load();
return (loader != NULL) ? (INT_PTR) this : FALSE;
}
BOOL MLImage::Load(void)
{
ResetData();
if (!loader) return FALSE;
HBITMAP hbmpLoaded = loader((INT_PTR)this);
if(hbmpLoaded == NULL) return FALSE;
BITMAP bi;
if (GetObject(hbmpLoaded, sizeof(bi), &bi))
{
hbmp = ConvertTo32BppDIB(hbmpLoaded, bi.bmWidth, bi.bmHeight, &info, &data);
}
if (loaderDelete) DeleteObject(hbmpLoaded);
return (hbmp != NULL);
}
void MLImage::ResetData(void)
{
if (hbmp) DeleteObject(hbmp);
hbmp = NULL;
SecureZeroMemory(&info, sizeof(BITMAPINFO));
data = NULL;
}
BOOL MLImage::Draw(HDC hdcDest, int destX, int destY, int destWidth, int destHeight, int sourceX, int sourceY)
{
if (!hbmp) return FALSE;
int realheight = abs(info.bmiHeader.biHeight);
int rsX = min(sourceX, info.bmiHeader.biWidth);
int rsY = min(sourceY, info.bmiHeader.biWidth);
int height = min(destHeight, realheight - rsY);
BOOL bResult = SetDIBitsToDevice( hdcDest, destX, destY,
min(destWidth, info.bmiHeader.biWidth - rsX), height,
rsX, realheight - height - rsY,
0, height,
data, &info, DIB_RGB_COLORS);
return bResult;
}
BOOL MLImage::Draw(HDC hdcDest, int destX, int destY)
{
return (!hbmp) ? FALSE : SetDIBitsToDevice( hdcDest, destX, destY,
info.bmiHeader.biWidth, abs(info.bmiHeader.biHeight),
0, 0,
0, abs(info.bmiHeader.biHeight),
data, &info, DIB_RGB_COLORS);
}
int MLImage::GetWidth(void) const
{
return (hbmp) ? info.bmiHeader.biWidth : 0;
}
int MLImage::GetHeight(void) const
{
return (hbmp) ? abs(info.bmiHeader.biHeight) : 0;
}
void* MLImage::GetData(void) const
{
return data;
}
HBITMAP MLImage::ConvertTo32BppDIB(HBITMAP bmpHandle, int bmpWidth, int bmpHeight, LPBITMAPINFO bmpInfo, LPVOID *bmpData)
{
HBITMAP hbmpNew = NULL;
HDC hdc = GetWindowDC(NULL);
HDC hdcTmp = CreateCompatibleDC(hdc);
HBITMAP hbmpTmp = CreateCompatibleBitmap(hdc, bmpWidth, bmpHeight);
HBITMAP hbmpOld = (HBITMAP) SelectObject(hdcTmp, hbmpTmp);
// render original bitmap to the temp dc
HDC hdcBmp = CreateCompatibleDC(hdc);
SelectObject(hdcBmp, bmpHandle);
BitBlt(hdcTmp, 0, 0, bmpWidth, bmpHeight, hdcBmp, 0,0, SRCCOPY);
SelectObject(hdcBmp, NULL);
DeleteDC(hdcBmp);
// Create a 32 bit bitmap
BITMAPINFO bih;
// create DIB Section
bih.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bih.bmiHeader.biWidth = bmpWidth;
bih.bmiHeader.biHeight = 0 - bmpHeight;
bih.bmiHeader.biPlanes = 1;
bih.bmiHeader.biBitCount = 32;
bih.bmiHeader.biCompression = BI_RGB;
bih.bmiHeader.biSizeImage = 0;
bih.bmiHeader.biXPelsPerMeter = 0;
bih.bmiHeader.biYPelsPerMeter = 0;
bih.bmiHeader.biClrUsed = 0;
bih.bmiHeader.biClrImportant = 0;
// Create a DC which will be used to get DIB, then create DIBsection
hbmpNew = CreateDIBSection(hdc, (const BITMAPINFO*) &bih, DIB_RGB_COLORS, bmpData, NULL, 0);
DWORD* line = (DWORD*)(*bmpData);
// Copy the bits into our 32 bit dib..
for(int i=0; i<bmpHeight; i++)
{
for(int j=0; j<bmpWidth; j++)
{
line[(i*bmpWidth) + j] = FIXCOLORREF(GetPixel(hdcTmp, j, i));
}
}
SelectObject(hdcTmp, hbmpOld);
ReleaseDC(NULL, hdc);
DeleteDC(hdcTmp);
memcpy(bmpInfo, &bih, sizeof(BITMAPINFO));
return hbmpNew;
}
MLImage* MLImage::Copy(MLImage* destination, const MLImage* original)
{
if (!destination) return NULL;
destination->ResetData();
destination->loader = original->loader;
destination->loaderDelete = original->loaderDelete;
destination->info = original->info;
HDC hdc = GetWindowDC(NULL);
destination->hbmp = CreateDIBSection(hdc, (const BITMAPINFO*) &destination->info, DIB_RGB_COLORS, &destination->data, NULL, 0);
CopyMemory(destination->data, original->data, 4*destination->GetHeight() * destination->GetWidth());
ReleaseDC(NULL, hdc);
return destination;
}
MLImage* MLImage::Init(int width, int height)
{
ResetData();
loader = NULL;
loaderDelete = TRUE;
// create DIB Section
info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
info.bmiHeader.biWidth = width;
info.bmiHeader.biHeight = 0 - height;
info.bmiHeader.biPlanes = 1;
info.bmiHeader.biBitCount = 32;
info.bmiHeader.biCompression = BI_RGB;
info.bmiHeader.biSizeImage = 0;
info.bmiHeader.biXPelsPerMeter = 0;
info.bmiHeader.biYPelsPerMeter = 0;
info.bmiHeader.biClrUsed = 0;
info.bmiHeader.biClrImportant = 0;
HDC hdc = GetWindowDC(NULL);
hbmp = CreateDIBSection(hdc, (const BITMAPINFO*) &info, DIB_RGB_COLORS, &data, NULL, 0);
ReleaseDC(NULL, hdc);
return this;
}
MLImage* MLImage::Init(int width, int height, COLORREF color)
{
Init(width, height);
int rColor = FIXCOLORREF(color);
DWORD *line = (DWORD*)(data);
DWORD *end = line + GetHeight() * GetWidth();
for(;line != end; line++) *line = rColor;
return this;
}
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