/*
* Changes the handle to a grayscale image
*/
HBITMAP MakeGrayscale(HBITMAP hBitmap)
{
if (hBitmap) {
FIBITMAP *dib = FreeImage_CreateDIBFromHBITMAP(hBitmap);
if (dib) {
FIBITMAP *dib_new = FreeImage_ConvertToGreyscale(dib);
FreeImage_Unload(dib);
if (dib_new) {
DeleteObject(hBitmap);
HBITMAP hbm_new = FreeImage_CreateHBITMAPFromDIB(dib_new);
FreeImage_Unload(dib_new);
return hbm_new;
}
}
}
return hBitmap;
}
static INT_PTR serviceSave(WPARAM wParam, LPARAM lParam)
{
IMGSRVC_INFO *isi = (IMGSRVC_INFO *)wParam;
FREE_IMAGE_FORMAT fif;
BOOL fUnload = FALSE;
FIBITMAP *dib = NULL;
if(isi) {
if(isi->cbSize != sizeof(IMGSRVC_INFO))
return 0;
if(isi->szName || isi->wszName) {
if(isi->fif == FIF_UNKNOWN) {
if(lParam & IMGL_WCHAR)
fif = FreeImage_GetFIFFromFilenameU(isi->wszName);
else
fif = FreeImage_GetFIFFromFilename(isi->szName);
}
else
fif = isi->fif;
if(fif == FIF_UNKNOWN)
fif = FIF_BMP; // default, save as bmp
if(isi->hbm != 0 && (isi->dwMask & IMGI_HBITMAP) && !(isi->dwMask & IMGI_FBITMAP)) {
// create temporary dib, because we got a HBTIMAP passed
fUnload = TRUE;
FI_CorrectBitmap32Alpha(isi->hbm, FALSE);
dib = FreeImage_CreateDIBFromHBITMAP(isi->hbm);
}
else if(isi->dib != NULL && (isi->dwMask & IMGI_FBITMAP) && !(isi->dwMask & IMGI_HBITMAP))
dib = isi->dib;
int ret = 0;
if(dib) {
int flags = HIWORD(lParam);
if(fif == FIF_PNG || fif == FIF_BMP || fif == FIF_JNG)
{
if(lParam & IMGL_WCHAR)
ret = FreeImage_SaveU(fif, dib, isi->wszName, flags);
else
ret = FreeImage_Save(fif, dib, isi->szName, flags);
}
else
{
FIBITMAP *dib_new = FreeImage_ConvertTo24Bits(dib);
if(lParam & IMGL_WCHAR)
ret = FreeImage_SaveU(fif, dib_new, isi->wszName, flags);
else
ret = FreeImage_Save(fif, dib_new, isi->szName, flags);
FreeImage_Unload(dib_new);
}
if(fUnload)
FreeImage_Unload(dib);
return ret;
}
return 0;
}
}
return 0;
}
static INT_PTR serviceBmpFilterResizeBitmap(WPARAM wParam,LPARAM lParam)
{
BITMAP bminfo;
int width, height;
int xOrig, yOrig, widthOrig, heightOrig;
ResizeBitmap *info = (ResizeBitmap *) wParam;
if (info == NULL || info->size != sizeof(ResizeBitmap)
|| info->hBmp == NULL
|| info->max_width < 0 || info->max_height < 0
|| (info->fit & ~RESIZEBITMAP_FLAG_DONT_GROW) < RESIZEBITMAP_STRETCH
|| (info->fit & ~RESIZEBITMAP_FLAG_DONT_GROW) > RESIZEBITMAP_MAKE_SQUARE)
return 0;
// Well, lets do it
// Calc final size
GetObject(info->hBmp, sizeof(bminfo), &bminfo);
width = info->max_width == 0 ? bminfo.bmWidth : info->max_width;
height = info->max_height == 0 ? bminfo.bmHeight : info->max_height;
xOrig = 0;
yOrig = 0;
widthOrig = bminfo.bmWidth;
heightOrig = bminfo.bmHeight;
if (widthOrig == 0 || heightOrig == 0)
return 0;
switch(info->fit & ~RESIZEBITMAP_FLAG_DONT_GROW)
{
case RESIZEBITMAP_STRETCH:
{
// Do nothing
break;
}
case RESIZEBITMAP_KEEP_PROPORTIONS:
{
if (height * widthOrig / heightOrig <= width)
{
if (info->fit & RESIZEBITMAP_FLAG_DONT_GROW)
height = min(height, bminfo.bmHeight);
width = height * widthOrig / heightOrig;
}
else
{
if (info->fit & RESIZEBITMAP_FLAG_DONT_GROW)
width = min(width, bminfo.bmWidth);
height = width * heightOrig / widthOrig;
}
break;
}
case RESIZEBITMAP_MAKE_SQUARE:
{
if (info->fit & RESIZEBITMAP_FLAG_DONT_GROW)
{
width = min(width, bminfo.bmWidth);
height = min(height, bminfo.bmHeight);
}
width = height = min(width, height);
// Do not break. Use crop calcs to make size
}
case RESIZEBITMAP_CROP:
{
if (heightOrig * width / height >= widthOrig)
{
heightOrig = widthOrig * height / width;
yOrig = (bminfo.bmHeight - heightOrig) / 2;
}
else
{
widthOrig = heightOrig * width / height;
xOrig = (bminfo.bmWidth - widthOrig) / 2;
}
break;
}
}
if ((width == bminfo.bmWidth && height == bminfo.bmHeight)
|| ((info->fit & RESIZEBITMAP_FLAG_DONT_GROW)
&& !(info->fit & RESIZEBITMAP_MAKE_SQUARE)
&& width > bminfo.bmWidth && height > bminfo.bmHeight))
{
// Do nothing
return (INT_PTR)info->hBmp;
}
else
{
FIBITMAP *dib = FreeImage_CreateDIBFromHBITMAP(info->hBmp);
if (dib == NULL)
return NULL;
FIBITMAP *dib_tmp;
if (xOrig > 0 || yOrig > 0)
dib_tmp = FreeImage_Copy(dib, xOrig, yOrig, xOrig + widthOrig, yOrig + heightOrig);
else
dib_tmp = dib;
if (dib_tmp == NULL)
{
FreeImage_Unload(dib);
return NULL;
}
FIBITMAP *dib_new = FreeImage_Rescale(dib_tmp, width, height, FILTER_CATMULLROM);
HBITMAP bitmap_new = FreeImage_CreateHBITMAPFromDIB(dib_new);
if (dib_new != dib_tmp)
FreeImage_Unload(dib_new);
if (dib_tmp != dib)
FreeImage_Unload(dib_tmp);
FreeImage_Unload(dib);
return (INT_PTR)bitmap_new;
}
}