From 31f99ce7d2f3c2b61742d07ab92b6dac6a928ef9 Mon Sep 17 00:00:00 2001
From: Matt Sarett <msarett@google.com>
Date: Tue, 11 Apr 2017 08:46:01 -0400
Subject: [PATCH] SkCanvas constructor with legacy flag for Android framework

Bug: skia:
Change-Id: I5b268ad03dde075f2710196d5ad2bd19249557f7
Reviewed-on: https://skia-review.googlesource.com/11788
Commit-Queue: Matt Sarett <msarett@google.com>
Reviewed-by: Mike Reed <reed@google.com>
---
 include/core/SkCanvas.h | 13 +++++++++++++
 src/core/SkCanvas.cpp   | 15 +++++++++++++++
 tests/CanvasTest.cpp    | 20 ++++++++++++++++++++
 3 files changed, 48 insertions(+)

diff --git a/include/core/SkCanvas.h b/include/core/SkCanvas.h
index c44965e110..d73ceb7578 100644
--- a/include/core/SkCanvas.h
+++ b/include/core/SkCanvas.h
@@ -112,6 +112,19 @@ public:
     */
     explicit SkCanvas(const SkBitmap& bitmap);
 
+#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
+    enum class ColorBehavior {
+        kLegacy,
+    };
+
+    /**
+     *  Android framework only constructor.
+     *  Allows the creation of a legacy SkCanvas even though the |bitmap|
+     *  and its pixel ref may have an SkColorSpace.
+     */
+    SkCanvas(const SkBitmap& bitmap, ColorBehavior);
+#endif
+
     /** Construct a canvas with the specified bitmap to draw into.
         @param bitmap   Specifies a bitmap for the canvas to draw into. Its
                         structure are copied to the canvas.
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index cd1600ad72..aa69f09f47 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -747,6 +747,21 @@ SkCanvas::SkCanvas(const SkBitmap& bitmap, std::unique_ptr<SkRasterHandleAllocat
 
 SkCanvas::SkCanvas(const SkBitmap& bitmap) : SkCanvas(bitmap, nullptr, nullptr) {}
 
+#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
+SkCanvas::SkCanvas(const SkBitmap& bitmap, ColorBehavior)
+    : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage))
+    , fProps(SkSurfaceProps::kLegacyFontHost_InitType)
+    , fAllocator(nullptr)
+{
+    inc_canvas();
+
+    SkBitmap tmp(bitmap);
+    *const_cast<SkImageInfo*>(&tmp.info()) = tmp.info().makeColorSpace(nullptr);
+    sk_sp<SkBaseDevice> device(new SkBitmapDevice(tmp, fProps, nullptr));
+    this->init(device.get(), kDefault_InitFlags);
+}
+#endif
+
 SkCanvas::~SkCanvas() {
     // free up the contents of our deque
     this->restoreToCount(1);    // restore everything but the last
diff --git a/tests/CanvasTest.cpp b/tests/CanvasTest.cpp
index 26228bacde..fabd19574a 100644
--- a/tests/CanvasTest.cpp
+++ b/tests/CanvasTest.cpp
@@ -887,3 +887,23 @@ DEF_TEST(CanvasClipType, r) {
     SkDynamicMemoryWStream stream;
     test_cliptype(SkDocument::MakePDF(&stream)->beginPage(100, 100), r);
 }
+
+#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
+DEF_TEST(Canvas_LegacyColorBehavior, r) {
+    sk_sp<SkColorSpace> cs = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
+                                                   SkColorSpace::kAdobeRGB_Gamut);
+
+    // Make a Adobe RGB bitmap.
+    SkBitmap bitmap;
+    bitmap.allocPixels(SkImageInfo::MakeN32(1, 1, kOpaque_SkAlphaType, cs));
+    bitmap.eraseColor(0xFF000000);
+
+    // Wrap it in a legacy canvas.  Test that the canvas behaves like a legacy canvas.
+    SkCanvas canvas(bitmap, SkCanvas::ColorBehavior::kLegacy);
+    REPORTER_ASSERT(r, !canvas.imageInfo().colorSpace());
+    SkPaint p;
+    p.setColor(SK_ColorRED);
+    canvas.drawIRect(SkIRect::MakeWH(1, 1), p);
+    REPORTER_ASSERT(r, SK_ColorRED == SkSwizzle_BGRA_to_PMColor(*bitmap.getAddr32(0, 0)));
+}
+#endif
-- 
2.34.1