DM::PDFSink::draw excercises multi-page pdf
BUG=skia:3365
Review URL: https://codereview.chromium.org/881343002
diff --git a/dm/DMSrcSink.cpp b/dm/DMSrcSink.cpp
index 7979dff..3fd1a4d 100644
--- a/dm/DMSrcSink.cpp
+++ b/dm/DMSrcSink.cpp
@@ -180,18 +180,37 @@
PDFSink::PDFSink() {}
Error PDFSink::draw(const Src& src, SkBitmap*, SkWStream* dst) const {
- SkSize size;
- size = src.size();
+ // Print the given DM:Src to a PDF, breaking on 8.5x11 pages.
SkAutoTUnref<SkDocument> doc(SkDocument::CreatePDF(dst));
- SkCanvas* canvas = doc->beginPage(size.width(), size.height());
- Error err = src.draw(canvas);
- if (!err.isEmpty()) {
- return err;
+ int width = src.size().width(),
+ height = src.size().height();
+
+ const int kLetterWidth = 612, // 8.5 * 72
+ kLetterHeight = 792; // 11 * 72
+ const SkRect letter = SkRect::MakeWH(SkIntToScalar(kLetterWidth),
+ SkIntToScalar(kLetterHeight));
+
+ int xPages = ((width - 1) / kLetterWidth) + 1;
+ int yPages = ((height - 1) / kLetterHeight) + 1;
+
+ for (int y = 0; y < yPages; ++y) {
+ for (int x = 0; x < xPages; ++x) {
+ int w = SkTMin(kLetterWidth, width - (x * kLetterWidth));
+ int h = SkTMin(kLetterHeight, height - (y * kLetterHeight));
+ SkCanvas* canvas =
+ doc->beginPage(SkIntToScalar(w), SkIntToScalar(h));
+ canvas->clipRect(letter);
+ canvas->translate(-letter.width() * x, -letter.height() * y);
+ Error err = src.draw(canvas);
+ if (!err.isEmpty()) {
+ return err;
+ }
+ doc->endPage();
+ }
}
- canvas->flush();
- doc->endPage();
doc->close();
+ dst->flush();
return "";
}