update skpdiff visualization (image magnification with alpha mask)
R=epoger@google.com
Review URL: https://codereview.chromium.org/29103005
git-svn-id: http://skia.googlecode.com/svn/trunk@12174 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/skpdiff/SkImageDiffer.h b/tools/skpdiff/SkImageDiffer.h
index 6c570cb..3b50d57 100644
--- a/tools/skpdiff/SkImageDiffer.h
+++ b/tools/skpdiff/SkImageDiffer.h
@@ -19,6 +19,9 @@
SkImageDiffer();
virtual ~SkImageDiffer();
+ static const double RESULT_CORRECT = 1.0f;
+ static const double RESULT_INCORRECT = 0.0f;
+
/**
* Gets a unique and descriptive name of this differ
* @return A statically allocated null terminated string that is the name of this differ
@@ -37,6 +40,12 @@
virtual bool requiresOpenCL() { return false; }
/**
+ * Enables the generation of an alpha mask for all points of interest.
+ * @return True if the differ supports generating an alpha mask and false otherwise.
+ */
+ virtual bool enablePOIAlphaMask() { return false; }
+
+ /**
* Wraps a call to queueDiff by loading the given filenames into SkBitmaps
* @param baseline The file path of the baseline image
* @param test The file path of the test image
@@ -87,6 +96,13 @@
*/
virtual SkIPoint* getPointsOfInterest(int id) = 0;
+ /*
+ * Gets a bitmap containing an alpha mask containing transparent pixels at the points of
+ * interest for the diff of the given id. The results are only meaningful after the
+ * queued diff has finished.
+ * @param id The id of the queued diff to query
+ */
+ virtual SkBitmap* getPointsOfInterestAlphaMask(int id) { return NULL; }
protected: