// MW-2011-09-13: [[ Masks ]] Updated to store data in an MCWindowMask struct.
MCWindowShape *MCImage::makewindowshape(void)
{
bool t_success = true;
MCWindowShape *t_mask = nil;
CGImageRef t_mask_image = nil;
MCImageBitmap *t_bitmap = nil;
uint8_t *t_alpha = nil;
uindex_t t_alpha_stride = 0;
uindex_t t_width, t_height;
t_success = lockbitmap(t_bitmap, true);
if (t_success)
t_success = MCImageBitmapHasTransparency(t_bitmap);
if (t_success)
{
t_width = t_bitmap->width;
t_height = t_bitmap->height;
t_alpha_stride = (t_width + 3) & ~3;
t_success = MCMemoryAllocate(t_alpha_stride * t_height, t_alpha);
}
if (t_success)
{
surface_extract_alpha(t_bitmap->data, t_bitmap->stride, t_alpha, t_alpha_stride, t_width, t_height);
t_success = MCAlphaToCGImage(t_width, t_height, t_alpha, t_alpha_stride, t_mask_image);
}
if (t_success)
t_success = MCMemoryNew(t_mask);
unlockbitmap(t_bitmap);
if (!t_success)
{
CGImageRelease(t_mask_image);
MCMemoryDeallocate(t_mask);
MCMemoryDeallocate(t_alpha);
return nil;
}
t_mask->width = t_width;
t_mask->height = t_height;
t_mask->is_sharp = false;
t_mask->data = (char*)t_alpha;
t_mask->stride = t_alpha_stride;
t_mask->handle = t_mask_image;
return t_mask;
}
CGImageRef MCImage::converttodragimage(void)
{
CGImageRef t_image = NULL;
MCImageBitmap *t_bitmap = nil;
if (lockbitmap(t_bitmap, false))
/* UNCHECKED */ MCImageBitmapToCGImage(t_bitmap, true, false, t_image);
unlockbitmap(t_bitmap);
return t_image;
}
CGImageRef MCImage::makeicon(uint4 p_width, uint4 p_height)
{
CGImageRef t_icon = NULL;
MCImageBitmap *t_bitmap = nil;
if (lockbitmap(t_bitmap, false))
{
MCImageBitmap *t_scaled = nil;
if (p_width != t_bitmap->width || p_height != t_bitmap->height)
/* UNCHECKED */ MCImageScaleBitmap(t_bitmap, p_width, p_height, resizequality, t_scaled);
/* UNCHECKED */ MCImageBitmapToCGImage(t_scaled != nil ? t_scaled : t_bitmap, true, false, t_icon);
MCImageFreeBitmap(t_scaled);
unlockbitmap(t_bitmap);
}
return t_icon;
}
