add drawString helper to canvas

Many tests and examples use drawText with
a guess of how long the text is in bytes,
or a call to strlen(). Add a helper to
SkCanvas to simplify these examples.

Add another helper for SkString.

R=reed@google.com

Change-Id: I0204a31e938f065606f08ee7cd9a6b36db791ee2
Reviewed-on: https://skia-review.googlesource.com/13642
Commit-Queue: Cary Clark <caryclark@google.com>
Reviewed-by: Cary Clark <caryclark@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Cary Clark <caryclark@skia.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/samplecode/SampleRectanizer.cpp b/samplecode/SampleRectanizer.cpp
index 4ff28b2a6c..0657464ef1 100644
--- a/samplecode/SampleRectanizer.cpp
+++ b/samplecode/SampleRectanizer.cpp
@@ -119,13 +119,13 @@ protected:
                    100.0f * totArea / ((float)kWidth*kHeight),
                    fCurRandRect,
                    kNumRandRects);
-        canvas->drawText(str.c_str(), str.size(), 50, kHeight + 50, blackBigFont);
+        canvas->drawString(str, 50, kHeight + 50, blackBigFont);
 
         str.printf("Press \'j\' to toggle rectanizer");
-        canvas->drawText(str.c_str(), str.size(), 50, kHeight + 100, blackBigFont);
+        canvas->drawString(str, 50, kHeight + 100, blackBigFont);
 
         str.printf("Press \'h\' to toggle rects");
-        canvas->drawText(str.c_str(), str.size(), 50, kHeight + 150, blackBigFont);
+        canvas->drawString(str, 50, kHeight + 150, blackBigFont);
 
         this->inval(nullptr);
     }