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DM::PDFSink::draw excercises multi-page pdf

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BUG=skia:3365

Review URL: https://codereview.chromium.org/881343002
This commit is contained in:
halcanary 2015-01-28 11:45:58 -08:00 committed by Commit bot
parent 9d91eb3136
commit fd4a993f8b
1 changed files with 27 additions and 8 deletions
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35
dm/DMSrcSink.cpp
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@ -180,18 +180,37 @@ Error GPUSink::draw(const Src& src, SkBitmap* dst, SkWStream*) const {
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 "";
}