From 1b5c604d9d344537941b11b136348edfc39f236c Mon Sep 17 00:00:00 2001 From: halcanary Date: Wed, 18 Feb 2015 11:29:56 -0800 Subject: PDF: Add (low-memory) SkPDFBitmap class Also: Add SkDeflateWStream and associated unit tests. SkPDFBitmap is a replacement for SkPDFImage. As of now, it only supports 8888 bitmaps (the most common case). SkPDFBitmap takes very little extra memory (aside from refing the bitmap's pixels), and its emitObject() does not cache any data. The SkPDFBitmap::Create function will check the canon for duplicates. This can reduce the size of the output PDF. Motivation: this gives another ~40% decrease in PDF memory overhead TODO: Support other ColorTypes and scrap SkPDFImage. BUG=skia:3030 Review URL: https://codereview.chromium.org/918813002 --- gm/repeated_bitmap.cpp | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 gm/repeated_bitmap.cpp (limited to 'gm/repeated_bitmap.cpp') diff --git a/gm/repeated_bitmap.cpp b/gm/repeated_bitmap.cpp new file mode 100644 index 0000000000..fa5fe0c136 --- /dev/null +++ b/gm/repeated_bitmap.cpp @@ -0,0 +1,31 @@ +/* + * Copyright 2015 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "gm.h" +#include "sk_tool_utils.h" +#include "Resources.h" + +DEF_SIMPLE_GM(repeated_bitmap, canvas, 576, 576) { + sk_tool_utils::draw_checkerboard(canvas, 0xFF999999, SK_ColorWHITE, 12); + SkRect rect = SkRect::MakeLTRB(-4.25f, -4.25f, 4.25f, 4.25f); + SkPaint paint; + paint.setColor(0xFF333333); + SkBitmap bm; + if (GetResourceAsBitmap("randPixels.png", &bm)) { + for (int j = 0; j < 4; ++j) { + for (int i = 0; i < 4; ++i) { + SkAutoCanvasRestore autoCanvasRestore(canvas, true); + canvas->scale(12.0f, 12.0f); + canvas->translate(6.0f + 12.0f * SkIntToScalar(i), + 6.0f + 12.0f * SkIntToScalar(j)); + canvas->rotate(18.0f * (i + 4 * j)); + canvas->drawRect(rect, paint); + canvas->drawBitmap(bm, -4.0f, -4.0f); + } + } + } +} -- cgit v1.2.3