bool PdfCreator::AddImagePage(const char *data, size_t len, float imgDpi)
{
CrashIf(!ctx || !doc);
if (!ctx || !doc) return false;
const WCHAR *ext = GfxFileExtFromData(data, len);
if (str::Eq(ext, L".jpg") || str::Eq(ext, L".jp2")) {
Size size = BitmapSizeFromData(data, len);
fz_image *image = nullptr;
fz_try(ctx) {
image = (str::Eq(ext, L".jpg") ? pack_jpeg : pack_jp2)(ctx, data, len, SizeI(size.Width, size.Height));
}
fz_catch(ctx) {
return false;
}
bool ok = AddImagePage(image, imgDpi);
fz_drop_image(ctx, image);
return ok;
}
bool HtmlFormatter::EmitImage(ImageData* img) {
CrashIf(!img->data);
Size imgSize = BitmapSizeFromData(img->data, img->len);
if (imgSize.Empty())
return false;
SizeF newSize((REAL)imgSize.Width, (REAL)imgSize.Height);
// move overly large images to a new line (if they don't fit entirely)
if (!IsCurrLineEmpty() && (currX + newSize.Width > pageDx || currY + newSize.Height > pageDy))
FlushCurrLine(false);
// move overly large images to a new page
// (if they don't fit even when scaled down to 75%)
REAL scalePage = std::min((pageDx - currX) / newSize.Width, pageDy / newSize.Height);
if (currY > 0 && currY + newSize.Height * std::min(scalePage, 0.75f) > pageDy)
ForceNewPage();
// if image is bigger than the available space, scale it down
if (newSize.Width > pageDx - currX || newSize.Height > pageDy - currY) {
REAL scale = std::min(scalePage, (pageDy - currY) / newSize.Height);
// scale down images that follow right after a line
// containing a single image as little as possible,
// as they might be intended to be of the same size
if (scale < scalePage && HasPreviousLineSingleImage(currPage->instructions)) {
ForceNewPage();
scale = scalePage;
}
if (scale < 1) {
newSize.Width = std::min(newSize.Width * scale, pageDx - currX);
newSize.Height = std::min(newSize.Height * scale, pageDy - currY);
}
}
RectF bbox(PointF(currX, 0), newSize);
AppendInstr(DrawInstr::Image(img->data, img->len, bbox));
currX += bbox.Width;
return true;
}