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>

31 files changed, 61 insertions, 61 deletions

diff --git a/samplecode/ClockFaceView.cpp b/samplecode/ClockFaceView.cpp
index 2721a5bd18..959ac5094c 100644
--- a/samplecode/ClockFaceView.cpp
+++ b/samplecode/ClockFaceView.cpp
@@ -235,7 +235,7 @@ protected:
         paint.setTypeface(fFace);
 
         apply_shader(&paint, SkScalarToFloat(fInterp));
-        canvas->drawText(str.c_str(), str.size(), x, y, paint);
+        canvas->drawString(str, x, y, paint);
 
     //    drawdots(canvas, paint);
 
diff --git a/samplecode/OverView.cpp b/samplecode/OverView.cpp
index 62e8c2aa19..cb56783a8b 100644
--- a/samplecode/OverView.cpp
+++ b/samplecode/OverView.cpp
@@ -167,7 +167,7 @@ void OverView::onDraw(SkCanvas* canvas) {
     for (int i = 0; i < fCount; ++i) {
         if (draw_this_name(fNames[i], fMatchStr)) {
             canvas->drawRect(this->bounds(loc), paint);
-            canvas->drawText(fNames[i].c_str(), fNames[i].size(), loc.x(), loc.y(), fNamePaint);
+            canvas->drawString(fNames[i], loc.x(), loc.y(), fNamePaint);
             this->next(&loc);
         }
     }
diff --git a/samplecode/SampleAAGeometry.cpp b/samplecode/SampleAAGeometry.cpp
index 875db26ca2..6f6541b0d9 100644
--- a/samplecode/SampleAAGeometry.cpp
+++ b/samplecode/SampleAAGeometry.cpp
@@ -606,8 +606,8 @@ struct UniControl {
         canvas->drawLine(fBounds.fLeft - 5, fYLo, fBounds.fRight + 5, fYLo, paints.fIndicator);
         SkString label;
         label.printf("%0.3g", fValLo);
-        canvas->drawText(label.c_str(), label.size(), fBounds.fLeft + 5, fYLo - 5, paints.fValue);
-        canvas->drawText(fName.c_str(), fName.size(), fBounds.fLeft, fBounds.bottom() + 11,
+        canvas->drawString(label, fBounds.fLeft + 5, fYLo - 5, paints.fValue);
+        canvas->drawString(fName, fBounds.fLeft, fBounds.bottom() + 11,
                 paints.fLabel);
     }
 };
@@ -634,7 +634,7 @@ struct BiControl : public UniControl {
         if (yPos < fYLo + 10) {
             yPos = fYLo + 10;
         }
-        canvas->drawText(label.c_str(), label.size(), fBounds.fLeft + 5, yPos - 5, paints.fValue);
+        canvas->drawString(label, fBounds.fLeft + 5, yPos - 5, paints.fValue);
         SkRect fill = { fBounds.fLeft, fYLo, fBounds.fRight, yPos };
         canvas->drawRect(fill, paints.fFill);
     }
@@ -1819,11 +1819,11 @@ void AAGeometryView::draw_legend(SkCanvas* canvas) {
     SkScalar bottomOffset = this->height() - 10;
     for (int index = kKeyCommandCount - 1; index >= 0; --index) {
         bottomOffset -= 15;
-        canvas->drawText(kKeyCommandList[index].fDescriptionL,
-                strlen(kKeyCommandList[index].fDescriptionL), this->width() - 160, bottomOffset,
+        canvas->drawString(kKeyCommandList[index].fDescriptionL,
+                this->width() - 160, bottomOffset,
                 fLegendLeftPaint);
-        canvas->drawText(kKeyCommandList[index].fDescriptionR,
-                strlen(kKeyCommandList[index].fDescriptionR), this->width() - 20, bottomOffset,
+        canvas->drawString(kKeyCommandList[index].fDescriptionR,
+                this->width() - 20, bottomOffset,
                 fLegendRightPaint);
     }
 }
diff --git a/samplecode/SampleAll.cpp b/samplecode/SampleAll.cpp
index 37a0c4b871..a8d24589ce 100644
--- a/samplecode/SampleAll.cpp
+++ b/samplecode/SampleAll.cpp
@@ -544,7 +544,7 @@ protected:
                                     gLightingColors[index].fAdd));
 #endif
 
-            canvas->drawText(str.c_str(), str.size(), x, y, paint);
+            canvas->drawString(str, x, y, paint);
             SkRect  oval = { x, y - SkIntToScalar(40), x + SkIntToScalar(40), y };
             paint.setStyle(SkPaint::kStroke_Style);
             canvas->drawOval(oval, paint);
diff --git a/samplecode/SampleAnimatedText.cpp b/samplecode/SampleAnimatedText.cpp
index 2b047c2abe..e70530ab96 100644
--- a/samplecode/SampleAnimatedText.cpp
+++ b/samplecode/SampleAnimatedText.cpp
@@ -126,8 +126,8 @@ protected:
         canvas->restore();
 
         paint.setTextSize(16);
-//        canvas->drawText(outString.c_str(), outString.size(), 512.f, 540.f, paint);
-        canvas->drawText(modeString.c_str(), modeString.size(), 768.f, 540.f, paint);
+//        canvas->drawString(outString, 512.f, 540.f, paint);
+        canvas->drawString(modeString, 768.f, 540.f, paint);
     }
 
     bool onAnimate(const SkAnimTimer& timer) override {
diff --git a/samplecode/SampleArc.cpp b/samplecode/SampleArc.cpp
index f95833e830..abdcdec2fd 100644
--- a/samplecode/SampleArc.cpp
+++ b/samplecode/SampleArc.cpp
@@ -127,7 +127,7 @@ protected:
         str.appendScalar(start);
         str.append(", ");
         str.appendScalar(sweep);
-        canvas->drawText(str.c_str(), str.size(), rect.centerX(),
+        canvas->drawString(str, rect.centerX(),
                          rect.fBottom + paint.getTextSize() * 5/4, paint);
     }
 
diff --git a/samplecode/SampleBevel.cpp b/samplecode/SampleBevel.cpp
index fce8885c48..3f193cfc45 100644
--- a/samplecode/SampleBevel.cpp
+++ b/samplecode/SampleBevel.cpp
@@ -90,7 +90,7 @@ protected:
         labelPaint.setColor(0xFFFFFFFF);
         labelPaint.setTextSize(12.0f);
 
-        canvas->drawText(label.c_str(), label.size(), 0, kLabelHeight - 6.0f, labelPaint);
+        canvas->drawString(label, 0, kLabelHeight - 6.0f, labelPaint);
     }
 
     SkString fName;
diff --git a/samplecode/SampleBitmapRect.cpp b/samplecode/SampleBitmapRect.cpp
index ebfe3bbc6d..ccf2d26fe9 100644
--- a/samplecode/SampleBitmapRect.cpp
+++ b/samplecode/SampleBitmapRect.cpp
@@ -171,7 +171,7 @@ static void make_big_bitmap(SkBitmap* bm) {
 
     SkCanvas canvas(*bm);
 
-    canvas.drawText(gText, strlen(gText), 0, paint.getTextSize()*4/5, paint);
+    canvas.drawString(gText, 0, paint.getTextSize()*4/5, paint);
 }
 
 class BitmapRectView2 : public SampleView {
diff --git a/samplecode/SampleBlur.cpp b/samplecode/SampleBlur.cpp
index 4c4082cea0..a2f90a7746 100644
--- a/samplecode/SampleBlur.cpp
+++ b/samplecode/SampleBlur.cpp
@@ -111,13 +111,13 @@ protected:
                 SkScalar x = SkIntToScalar(70);
                 SkScalar y = SkIntToScalar(400);
                 paint.setColor(SK_ColorBLACK);
-                canvas->drawText("Hamburgefons Style", 18, x, y, paint);
-                canvas->drawText("Hamburgefons Style", 18, x, y + SkIntToScalar(50), paint);
+                canvas->drawString("Hamburgefons Style", x, y, paint);
+                canvas->drawString("Hamburgefons Style", x, y + SkIntToScalar(50), paint);
                 paint.setMaskFilter(nullptr);
                 paint.setColor(SK_ColorWHITE);
                 x -= SkIntToScalar(2);
                 y -= SkIntToScalar(2);
-                canvas->drawText("Hamburgefons Style", 18, x, y, paint);
+                canvas->drawString("Hamburgefons Style", x, y, paint);
             }
             canvas->restore();
             flags = SkBlurMaskFilter::kHighQuality_BlurFlag;
diff --git a/samplecode/SampleClip.cpp b/samplecode/SampleClip.cpp
index 41192fbbc4..05b5a25e5b 100644
--- a/samplecode/SampleClip.cpp
+++ b/samplecode/SampleClip.cpp
@@ -27,7 +27,7 @@ static void show_text(SkCanvas* canvas, bool doAA) {
 
     for (int i = 0; i < 200; ++i) {
         paint.setColor((SK_A32_MASK << SK_A32_SHIFT) | rand.nextU());
-        canvas->drawText("Hamburgefons", 12,
+        canvas->drawString("Hamburgefons",
                          rand.nextSScalar1() * W, rand.nextSScalar1() * H + 20,
                          paint);
     }
diff --git a/samplecode/SampleComplexClip.cpp b/samplecode/SampleComplexClip.cpp
index b9c930742e..af7f38ede9 100644
--- a/samplecode/SampleComplexClip.cpp
+++ b/samplecode/SampleComplexClip.cpp
@@ -129,14 +129,14 @@ protected:
                 SkScalar txtX = SkIntToScalar(55);
                 paint.setColor(colorA);
                 const char* aTxt = invA ? "InverseA " : "A ";
-                canvas->drawText(aTxt, strlen(aTxt), txtX, SkIntToScalar(220), paint);
+                canvas->drawString(aTxt, txtX, SkIntToScalar(220), paint);
                 txtX += paint.measureText(aTxt, strlen(aTxt));
                 paint.setColor(SK_ColorBLACK);
-                canvas->drawText(gOps[op].fName, strlen(gOps[op].fName),
+                canvas->drawString(gOps[op].fName,
                                     txtX, SkIntToScalar(220), paint);
                 txtX += paint.measureText(gOps[op].fName, strlen(gOps[op].fName));
                 paint.setColor(colorB);
-                canvas->drawText("B", 1, txtX, SkIntToScalar(220), paint);
+                canvas->drawString("B", txtX, SkIntToScalar(220), paint);
 
                 canvas->translate(SkIntToScalar(250),0);
             }
diff --git a/samplecode/SampleDegenerateTwoPtRadials.cpp b/samplecode/SampleDegenerateTwoPtRadials.cpp
index f171202249..cdd5e1c2d1 100644
--- a/samplecode/SampleDegenerateTwoPtRadials.cpp
+++ b/samplecode/SampleDegenerateTwoPtRadials.cpp
@@ -72,7 +72,7 @@ protected:
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setColor(SK_ColorBLACK);
-        canvas->drawText(txt.c_str(), txt.size(), l + w/2 + w*DELTA_SCALE*delta, t + h + SK_Scalar1 * 10, paint);
+        canvas->drawString(txt, l + w/2 + w*DELTA_SCALE*delta, t + h + SK_Scalar1 * 10, paint);
     }
 
     bool onAnimate(const SkAnimTimer& timer) override {
diff --git a/samplecode/SampleFatBits.cpp b/samplecode/SampleFatBits.cpp
index c49cdadcb3..1acc1afa31 100644
--- a/samplecode/SampleFatBits.cpp
+++ b/samplecode/SampleFatBits.cpp
@@ -462,7 +462,7 @@ protected:
             paint.setAntiAlias(true);
             paint.setTextSize(16);
             paint.setColor(SK_ColorBLUE);
-            canvas->drawText(str.c_str(), str.size(), 10, 16, paint);
+            canvas->drawString(str, 10, 16, paint);
         }
     }
 
diff --git a/samplecode/SampleFilter.cpp b/samplecode/SampleFilter.cpp
index 00f3853d4e..60dd7e090d 100644
--- a/samplecode/SampleFilter.cpp
+++ b/samplecode/SampleFilter.cpp
@@ -59,7 +59,7 @@ static SkScalar draw_row(SkCanvas* canvas, const SkBitmap& bm) {
 
     paint.setAntiAlias(true);
     const char* name = sk_tool_utils::colortype_name(bm.colorType());
-    canvas->drawText(name, strlen(name), x, SkIntToScalar(bm.height())*scale*5/8,
+    canvas->drawString(name, x, SkIntToScalar(bm.height())*scale*5/8,
                      paint);
     canvas->translate(SkIntToScalar(48), 0);
 
diff --git a/samplecode/SampleFilter2.cpp b/samplecode/SampleFilter2.cpp
index 9b2298a0b4..e6134bdb22 100644
--- a/samplecode/SampleFilter2.cpp
+++ b/samplecode/SampleFilter2.cpp
@@ -89,7 +89,7 @@ protected:
                         s.appendS32(paint.isDither());
                         s.append(" filter=");
                         s.appendS32(paint.getFilterQuality() != kNone_SkFilterQuality);
-                        canvas->drawText(s.c_str(), s.size(), x + W/2,
+                        canvas->drawString(s, x + W/2,
                                          y - p.getTextSize(), p);
                     }
                     if (k+j == 2) {
@@ -99,7 +99,7 @@ protected:
                         SkString s;
                         s.append(" depth=");
                         s.appendS32(fBitmaps[i].colorType() == kRGB_565_SkColorType ? 16 : 32);
-                        canvas->drawText(s.c_str(), s.size(), x + W + SkIntToScalar(4),
+                        canvas->drawString(s, x + W + SkIntToScalar(4),
                                          y + H/2, p);
                     }
                 }
diff --git a/samplecode/SampleFilterFuzz.cpp b/samplecode/SampleFilterFuzz.cpp
index 5524f1e852..3690612870 100644
--- a/samplecode/SampleFilterFuzz.cpp
+++ b/samplecode/SampleFilterFuzz.cpp
@@ -257,7 +257,7 @@ static void make_g_bitmap(SkBitmap& bitmap) {
     paint.setColor(0xFF884422);
     paint.setTextSize(SkIntToScalar(kBitmapSize/2));
     const char* str = "g";
-    canvas.drawText(str, strlen(str), SkIntToScalar(kBitmapSize/8),
+    canvas.drawString(str, SkIntToScalar(kBitmapSize/8),
                     SkIntToScalar(kBitmapSize/4), paint);
 }
 
@@ -339,7 +339,7 @@ static void drawSomething(SkCanvas* canvas) {
     canvas->drawCircle(SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/3), paint);
     paint.setColor(SK_ColorBLACK);
     paint.setTextSize(SkIntToScalar(kBitmapSize/3));
-    canvas->drawText("Picture", 7, SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/4), paint);
+    canvas->drawString("Picture", SkIntToScalar(kBitmapSize/2), SkIntToScalar(kBitmapSize/4), paint);
 }
 
 static void rand_color_table(uint8_t* table) {
diff --git a/samplecode/SampleFilterQuality.cpp b/samplecode/SampleFilterQuality.cpp
index 78aa20e1bc..43cd505721 100644
--- a/samplecode/SampleFilterQuality.cpp
+++ b/samplecode/SampleFilterQuality.cpp
@@ -277,14 +277,14 @@ protected:
         paint.setTextSize(36);
         SkString str;
         str.appendScalar(fScale);
-        canvas->drawText(str.c_str(), str.size(), textX, 100, paint);
+        canvas->drawString(str, textX, 100, paint);
         str.reset(); str.appendScalar(fAngle);
-        canvas->drawText(str.c_str(), str.size(), textX, 150, paint);
+        canvas->drawString(str, textX, 150, paint);
 
         str.reset(); str.appendScalar(trans[0]);
-        canvas->drawText(str.c_str(), str.size(), textX, 200, paint);
+        canvas->drawString(str, textX, 200, paint);
         str.reset(); str.appendScalar(trans[1]);
-        canvas->drawText(str.c_str(), str.size(), textX, 250, paint);
+        canvas->drawString(str, textX, 250, paint);
     }
 
     bool onAnimate(const SkAnimTimer& timer) override {
diff --git a/samplecode/SampleIdentityScale.cpp b/samplecode/SampleIdentityScale.cpp
index 95970e7f45..5fbba699df 100644
--- a/samplecode/SampleIdentityScale.cpp
+++ b/samplecode/SampleIdentityScale.cpp
@@ -71,7 +71,7 @@ protected:
         }
         canvas->drawBitmap( fBM, 100, 100, &paint );
         canvas->restore();
-        canvas->drawText( text, strlen(text), 100, 400, paint );
+        canvas->drawString(text, 100, 400, paint );
         this->inval(nullptr);
     }
 
diff --git a/samplecode/SamplePolyToPoly.cpp b/samplecode/SamplePolyToPoly.cpp
index 8594c2b88f..f947251b55 100644
--- a/samplecode/SamplePolyToPoly.cpp
+++ b/samplecode/SamplePolyToPoly.cpp
@@ -110,7 +110,7 @@ protected:
         float y = D/2 - (fm.fAscent + fm.fDescent)/2;
         SkString str;
         str.appendS32(count);
-        canvas->drawText(str.c_str(), str.size(),
+        canvas->drawString(str,
                          x, y,
                          *paint);
 
diff --git a/samplecode/SampleQuadStroker.cpp b/samplecode/SampleQuadStroker.cpp
index 30b8603bcf..ea5f97fa2a 100644
--- a/samplecode/SampleQuadStroker.cpp
+++ b/samplecode/SampleQuadStroker.cpp
@@ -321,7 +321,7 @@ protected:
                     label.appendS32(index);
                     SkRect dot = SkRect::MakeXYWH(pos.x() - 2, pos.y() - 2, 4, 4);
                     canvas->drawRect(dot, labelP);
-                    canvas->drawText(label.c_str(), label.size(),
+                    canvas->drawString(label,
                         pos.x() - tan.x() * 1.25f, pos.y() - tan.y() * 1.25f, labelP);
                 }
             }
@@ -381,7 +381,7 @@ protected:
             if (0 == index % 10) {
                 SkString label;
                 label.appendS32(index);
-                canvas->drawText(label.c_str(), label.size(),
+                canvas->drawString(label,
                     pos.x() + tan.x() * 1.25f, pos.y() + tan.y() * 1.25f, paint);
             }
         }
@@ -509,9 +509,9 @@ protected:
         paint.setColor(0xFF000000);
         paint.setTextSize(11.0f);
         paint.setStyle(SkPaint::kFill_Style);
-        canvas->drawText(label.c_str(), label.size(), bounds.fLeft + 5, yPos - 5, paint);
+        canvas->drawString(label, bounds.fLeft + 5, yPos - 5, paint);
         paint.setTextSize(13.0f);
-        canvas->drawText(name, strlen(name), bounds.fLeft, bounds.bottom() + 11, paint);
+        canvas->drawString(name, bounds.fLeft, bounds.bottom() + 11, paint);
     }
 
     void setForGeometry() {
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);
     }
diff --git a/samplecode/SampleRegion.cpp b/samplecode/SampleRegion.cpp
index 082ff22286..1fee2fa7f9 100644
--- a/samplecode/SampleRegion.cpp
+++ b/samplecode/SampleRegion.cpp
@@ -226,7 +226,7 @@ protected:
         paint.setAntiAlias(true);
         paint.setTextSize(SkIntToScalar(20));
         paint.setColor(hilite ? SK_ColorRED : 0x40FF0000);
-        canvas->drawText(text, strlen(text), loc.fX, loc.fY, paint);
+        canvas->drawString(text, loc.fX, loc.fY, paint);
     }
 
     void drawPredicates(SkCanvas* canvas, const SkPoint pts[]) {
@@ -373,7 +373,7 @@ protected:
         canvas->translate(0, SkIntToScalar(200));
 
         for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); op++) {
-            canvas->drawText(gOps[op].fName, strlen(gOps[op].fName), SkIntToScalar(75), SkIntToScalar(50), textPaint);
+            canvas->drawString(gOps[op].fName, SkIntToScalar(75), SkIntToScalar(50), textPaint);
 
             this->drawRgnOped(canvas, gOps[op].fOp, gOps[op].fColor);
 
diff --git a/samplecode/SampleShip.cpp b/samplecode/SampleShip.cpp
index 9d65b6f690..08f794abab 100644
--- a/samplecode/SampleShip.cpp
+++ b/samplecode/SampleShip.cpp
@@ -150,7 +150,7 @@ protected:
         paint.setColor(SK_ColorBLACK);
         canvas->drawRect(SkRect::MakeXYWH(0, 0, 200, 24), paint);
         paint.setColor(SK_ColorWHITE);
-        canvas->drawText(outString.c_str(), outString.size(), 5, 15, paint);
+        canvas->drawString(outString, 5, 15, paint);
 
         this->inval(nullptr);
     }
diff --git a/samplecode/SampleStrokePath.cpp b/samplecode/SampleStrokePath.cpp
index e69625e9bf..3f84482f4f 100644
--- a/samplecode/SampleStrokePath.cpp
+++ b/samplecode/SampleStrokePath.cpp
@@ -170,7 +170,7 @@ protected:
                     if (x) {
                         paint.setMaskFilter(SkBlurMaskFilter::Make(gStyle[x - 1], sigma));
                     }
-                    canvas->drawText("Title Bar", 9, x*SkIntToScalar(100), y*SkIntToScalar(30), paint);
+                    canvas->drawString("Title Bar", x*SkIntToScalar(100), y*SkIntToScalar(30), paint);
                     sigma *= 0.75f;
                 }
 
diff --git a/samplecode/SampleSubpixelTranslate.cpp b/samplecode/SampleSubpixelTranslate.cpp
index 3bb90562fa..fd66de25ca 100644
--- a/samplecode/SampleSubpixelTranslate.cpp
+++ b/samplecode/SampleSubpixelTranslate.cpp
@@ -71,7 +71,7 @@ protected:
             canvas->drawBitmapRect( fBM, r, &paint );
         }
 
-        canvas->drawText( "AA Scaled", strlen("AA Scaled"), fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fSize + 10), fCurPos.fY + fSize/2, paint );
+        canvas->drawString( "AA Scaled", fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fSize + 10), fCurPos.fY + fSize/2, paint );
 
         paint.setAntiAlias(false);
         for (size_t i = 0; i < SK_ARRAY_COUNT(gQualitys); ++i) {
@@ -79,7 +79,7 @@ protected:
             SkRect r = SkRect::MakeXYWH( fCurPos.fX + i * (fSize + 10), fCurPos.fY + fSize + 10, fSize, fSize );
             canvas->drawBitmapRect( fBM, r, &paint );
         }
-        canvas->drawText( "Scaled", strlen("Scaled"), fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fSize + 10), fCurPos.fY + fSize + 10 + fSize/2, paint );
+        canvas->drawString( "Scaled", fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fSize + 10), fCurPos.fY + fSize + 10 + fSize/2, paint );
 
         paint.setAntiAlias(true);
         for (size_t i = 0; i < SK_ARRAY_COUNT(gQualitys); ++i) {
@@ -87,7 +87,7 @@ protected:
             canvas->drawBitmap( fBM, fCurPos.fX + i * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10), &paint );
         }
 
-        canvas->drawText( "AA No Scale", strlen("AA No Scale"), fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10) + fSize/2, paint );
+        canvas->drawString( "AA No Scale", fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10) + fSize/2, paint );
 
         paint.setAntiAlias(false);
         for (size_t i = 0; i < SK_ARRAY_COUNT(gQualitys); ++i) {
@@ -95,7 +95,7 @@ protected:
             canvas->drawBitmap( fBM, fCurPos.fX + i * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10) + fBM.height() + 10, &paint );
         }
 
-        canvas->drawText( "No Scale", strlen("No Scale"), fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10) + fBM.height() + 10 + fSize/2, paint );
+        canvas->drawString( "No Scale", fCurPos.fX + SK_ARRAY_COUNT(gQualitys) * (fBM.width() + 10), fCurPos.fY + 2*(fSize + 10) + fBM.height() + 10 + fSize/2, paint );
 
 
         fCurPos.fX += fHorizontalVelocity;
diff --git a/samplecode/SampleText.cpp b/samplecode/SampleText.cpp
index 8325cd7755..12f345cd33 100644
--- a/samplecode/SampleText.cpp
+++ b/samplecode/SampleText.cpp
@@ -95,7 +95,7 @@ protected:
         paint.setFlags(paint.getFlags() | SkPaint::kAntiAlias_Flag
                                         | SkPaint::kDevKernText_Flag);
         paint.setTextSize(SkIntToScalar(14));
-        canvas.drawText(s, strlen(s), SkIntToScalar(8), SkIntToScalar(14), paint);
+        canvas.drawString(s, SkIntToScalar(8), SkIntToScalar(14), paint);
     }
 
     static void fill_pts(SkPoint pts[], size_t n, SkRandom* rand) {
@@ -119,7 +119,7 @@ protected:
 
 //        canvas->translate(0, SkIntToScalar(50));
 
-  //      canvas->drawText(style, strlen(style), SkIntToScalar(20), SkIntToScalar(20), paint);
+  //      canvas->drawString(style, SkIntToScalar(20), SkIntToScalar(20), paint);
 
         paint.setTypeface(SkTypeface::MakeFromFile("/skimages/samplefont.ttf"));
         paint.setAntiAlias(true);
diff --git a/samplecode/SampleTextAlpha.cpp b/samplecode/SampleTextAlpha.cpp
index 8286177ae7..c357e6d8c2 100644
--- a/samplecode/SampleTextAlpha.cpp
+++ b/samplecode/SampleTextAlpha.cpp
@@ -59,7 +59,7 @@ protected:
             paint.setColor(rand.nextU() | (0xFF << 24));
             paint.setTextSize(SkIntToScalar(ps));
             paint.setTextSize(SkIntToScalar(24));
-            canvas->drawText(str, strlen(str), x, y, paint);
+            canvas->drawString(str, x, y, paint);
             y += paint.getFontMetrics(nullptr);
         }
     }
diff --git a/samplecode/SampleTiling.cpp b/samplecode/SampleTiling.cpp
index 84346b0f72..e09354ec72 100644
--- a/samplecode/SampleTiling.cpp
+++ b/samplecode/SampleTiling.cpp
@@ -111,7 +111,7 @@ protected:
                     str.printf("[%s,%s]", gModeNames[kx], gModeNames[ky]);
 
                     p.setTextAlign(SkPaint::kCenter_Align);
-                    textCanvas->drawText(str.c_str(), str.size(), x + r.width()/2, y, p);
+                    textCanvas->drawString(str, x + r.width()/2, y, p);
 
                     x += r.width() * 4 / 3;
                 }
@@ -143,7 +143,7 @@ protected:
                     p.setAntiAlias(true);
                     p.setLooper(fLooper);
                     str.printf("%s, %s", gConfigNames[i], gFilterNames[j]);
-                    textCanvas->drawText(str.c_str(), str.size(), x, y + r.height() * 2 / 3, p);
+                    textCanvas->drawString(str, x, y + r.height() * 2 / 3, p);
                 }
 
                 y += r.height() * 4 / 3;
diff --git a/samplecode/SampleUnpremul.cpp b/samplecode/SampleUnpremul.cpp
index be42d23bbd..cd05fcffd4 100644
--- a/samplecode/SampleUnpremul.cpp
+++ b/samplecode/SampleUnpremul.cpp
@@ -93,7 +93,7 @@ protected:
             } else {
                 failure.printf("Failed to decode %s", fCurrFile.c_str());
             }
-            canvas->drawText(failure.c_str(), failure.size(), 0, height, paint);
+            canvas->drawString(failure, 0, height, paint);
             return;
         }
 
@@ -101,16 +101,16 @@ protected:
         SkString header(SkOSPath::Basename(fCurrFile.c_str()));
         header.appendf("     [%dx%d]     %s", fBitmap.width(), fBitmap.height(),
                        (fPremul ? "premultiplied" : "unpremultiplied"));
-        canvas->drawText(header.c_str(), header.size(), 0, height, paint);
+        canvas->drawString(header, 0, height, paint);
         canvas->translate(0, height);
 
         // Help messages
         header.printf("Press '%c' to move to the next image.'", fNextImageChar);
-        canvas->drawText(header.c_str(), header.size(), 0, height, paint);
+        canvas->drawString(header, 0, height, paint);
         canvas->translate(0, height);
 
         header.printf("Press '%c' to toggle premultiplied decode.", fTogglePremulChar);
-        canvas->drawText(header.c_str(), header.size(), 0, height, paint);
+        canvas->drawString(header, 0, height, paint);
 
         // Now draw the image itself.
         canvas->translate(height * 2, height * 2);
diff --git a/samplecode/SampleXfer.cpp b/samplecode/SampleXfer.cpp
index 9ca2e78c0c..87427fc8f3 100644
--- a/samplecode/SampleXfer.cpp
+++ b/samplecode/SampleXfer.cpp
@@ -75,7 +75,7 @@ protected:
         paint.setTextSize(16);
         paint.setTextAlign(SkPaint::kCenter_Align);
         paint.setLCDRenderText(true);
-        canvas->drawText(fLabel.c_str(), fLabel.size(), r.centerX(), r.fTop + 0.68f * r.height(), paint);
+        canvas->drawString(fLabel, r.centerX(), r.fTop + 0.68f * r.height(), paint);
     }
 
     Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned modi) override {
diff --git a/samplecode/SampleXfermodesBlur.cpp b/samplecode/SampleXfermodesBlur.cpp
index 2a17e6b1b8..ff198bcf8b 100644
--- a/samplecode/SampleXfermodesBlur.cpp
+++ b/samplecode/SampleXfermodesBlur.cpp
@@ -160,7 +160,7 @@ protected:
                 canvas->drawRect(r, p);
 
                 const char* label = SkBlendMode_Name(gModes[i]);
-                canvas->drawText(label, strlen(label),
+                canvas->drawString(label,
                                  x + w/2, y - labelP.getTextSize()/2, labelP);
                 x += w + SkIntToScalar(10);
                 if ((i % W) == W - 1) {