GM: replace boilerplate with macros

I have verified locally that nothing draws differently.

Motivation:
*   SK_SIMPLE_GM makes it easier to write a GM.
*   Reducing 1100 lines of code makes maintenance easier.
*   Simple GMs are easy to convert to Fiddles.

Review URL: https://codereview.chromium.org/1333553002

1 files changed, 23 insertions, 179 deletions

diff --git a/gm/linepaths.cpp b/gm/linepaths.cpp
index 0c99fa754c..51df788dd4 100644
--- a/gm/linepaths.cpp
+++ b/gm/linepaths.cpp
@@ -11,24 +11,10 @@
 #include "SkPaint.h"
 #include "SkRandom.h"
 
-namespace skiagm {
-
-class LinePathGM : public GM {
-public:
-    LinePathGM() {}
-
-protected:
-
-    SkString onShortName() {
-        return SkString("linepath");
-    }
-
-    SkISize onISize() { return SkISize::Make(1240, 390); }
-
-    void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
-                  const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
-                  SkPaint::Style style, SkPath::FillType fill,
-                  SkScalar strokeWidth) {
+static void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
+                     const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
+                     SkPaint::Style style, SkPath::FillType fill,
+                     SkScalar strokeWidth) {
         path.setFillType(fill);
         SkPaint paint;
         paint.setStrokeCap(cap);
@@ -40,9 +26,9 @@ protected:
         canvas->clipRect(clip);
         canvas->drawPath(path, paint);
         canvas->restore();
-    }
+}
 
-    virtual void onDraw(SkCanvas* canvas) {
+static void draw(SkCanvas* canvas, bool doClose) {
         struct FillAndName {
             SkPath::FillType fFill;
             const char*      fName;
@@ -79,157 +65,23 @@ protected:
         PathAndName path;
         path.fPath.moveTo(25*SK_Scalar1, 15*SK_Scalar1);
         path.fPath.lineTo(75*SK_Scalar1, 15*SK_Scalar1);
-        path.fName = "moveTo-line";
-
-        SkPaint titlePaint;
-        titlePaint.setColor(SK_ColorBLACK);
-        titlePaint.setAntiAlias(true);
-        sk_tool_utils::set_portable_typeface(&titlePaint);
-        titlePaint.setTextSize(15 * SK_Scalar1);
-        const char title[] = "Line Drawn Into Rectangle Clips With "
-                             "Indicated Style, Fill and Linecaps, with stroke width 10";
-        canvas->drawText(title, strlen(title),
-                            20 * SK_Scalar1,
-                            20 * SK_Scalar1,
-                            titlePaint);
-
-        SkRandom rand;
-        SkRect rect = SkRect::MakeWH(100*SK_Scalar1, 30*SK_Scalar1);
-        canvas->save();
-        canvas->translate(10 * SK_Scalar1, 30 * SK_Scalar1);
-        canvas->save();
-        for (size_t cap = 0; cap < SK_ARRAY_COUNT(gCaps); ++cap) {
-            if (0 < cap) {
-                canvas->translate((rect.width() + 40 * SK_Scalar1) * SK_ARRAY_COUNT(gStyles), 0);
-            }
-            canvas->save();
-            for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
-                if (0 < fill) {
-                    canvas->translate(0, rect.height() + 40 * SK_Scalar1);
-                }
-                canvas->save();
-                for (size_t style = 0; style < SK_ARRAY_COUNT(gStyles); ++style) {
-                    if (0 < style) {
-                        canvas->translate(rect.width() + 40 * SK_Scalar1, 0);
-                    }
-
-                    SkColor color = sk_tool_utils::color_to_565(0xff007000);
-                    this->drawPath(path.fPath, canvas, color, rect,
-                                    gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
-                                    gFills[fill].fFill, SK_Scalar1*10);
-
-                    SkPaint rectPaint;
-                    rectPaint.setColor(SK_ColorBLACK);
-                    rectPaint.setStyle(SkPaint::kStroke_Style);
-                    rectPaint.setStrokeWidth(-1);
-                    rectPaint.setAntiAlias(true);
-                    canvas->drawRect(rect, rectPaint);
-
-                    SkPaint labelPaint;
-                    labelPaint.setColor(color);
-                    labelPaint.setAntiAlias(true);
-                    sk_tool_utils::set_portable_typeface(&labelPaint);
-                    labelPaint.setTextSize(10 * SK_Scalar1);
-                    canvas->drawText(gStyles[style].fName,
-                                        strlen(gStyles[style].fName),
-                                        0, rect.height() + 12 * SK_Scalar1,
-                                        labelPaint);
-                    canvas->drawText(gFills[fill].fName,
-                                        strlen(gFills[fill].fName),
-                                        0, rect.height() + 24 * SK_Scalar1,
-                                        labelPaint);
-                    canvas->drawText(gCaps[cap].fName,
-                                        strlen(gCaps[cap].fName),
-                                        0, rect.height() + 36 * SK_Scalar1,
-                                        labelPaint);
-                }
-                canvas->restore();
-            }
-            canvas->restore();
+        if (doClose) {
+            path.fPath.close();
+            path.fName = "moveTo-line-close";
+        } else {
+            path.fName = "moveTo-line";
         }
-        canvas->restore();
-        canvas->restore();
-    }
-
-private:
-    typedef GM INHERITED;
-};
-
-class LineClosePathGM : public GM {
-public:
-    LineClosePathGM() {}
-
-protected:
-    SkString onShortName() {
-        return SkString("lineclosepath");
-    }
-
-    SkISize onISize() { return SkISize::Make(1240, 390); }
-
-    void drawPath(SkPath& path,SkCanvas* canvas,SkColor color,
-                  const SkRect& clip,SkPaint::Cap cap, SkPaint::Join join,
-                  SkPaint::Style style, SkPath::FillType fill,
-                  SkScalar strokeWidth) {
-        path.setFillType(fill);
-        SkPaint paint;
-        paint.setStrokeCap(cap);
-        paint.setStrokeWidth(strokeWidth);
-        paint.setStrokeJoin(join);
-        paint.setColor(color);
-        paint.setStyle(style);
-        canvas->save();
-        canvas->clipRect(clip);
-        canvas->drawPath(path, paint);
-        canvas->restore();
-    }
-
-    virtual void onDraw(SkCanvas* canvas) {
-        struct FillAndName {
-            SkPath::FillType fFill;
-            const char*      fName;
-        };
-        static const FillAndName gFills[] = {
-            {SkPath::kWinding_FillType, "Winding"},
-            {SkPath::kEvenOdd_FillType, "Even / Odd"},
-            {SkPath::kInverseWinding_FillType, "Inverse Winding"},
-            {SkPath::kInverseEvenOdd_FillType, "Inverse Even / Odd"},
-        };
-        struct StyleAndName {
-            SkPaint::Style fStyle;
-            const char*    fName;
-        };
-        static const StyleAndName gStyles[] = {
-            {SkPaint::kFill_Style, "Fill"},
-            {SkPaint::kStroke_Style, "Stroke"},
-            {SkPaint::kStrokeAndFill_Style, "Stroke And Fill"},
-        };
-        struct CapAndName {
-            SkPaint::Cap  fCap;
-            SkPaint::Join fJoin;
-            const char*   fName;
-        };
-        static const CapAndName gCaps[] = {
-            {SkPaint::kButt_Cap, SkPaint::kBevel_Join, "Butt"},
-            {SkPaint::kRound_Cap, SkPaint::kRound_Join, "Round"},
-            {SkPaint::kSquare_Cap, SkPaint::kBevel_Join, "Square"}
-        };
-        struct PathAndName {
-            SkPath      fPath;
-            const char* fName;
-        };
-        PathAndName path;
-        path.fPath.moveTo(25*SK_Scalar1, 15*SK_Scalar1);
-        path.fPath.lineTo(75*SK_Scalar1, 15*SK_Scalar1);
-        path.fPath.close();
-        path.fName = "moveTo-line-close";
 
         SkPaint titlePaint;
         titlePaint.setColor(SK_ColorBLACK);
         titlePaint.setAntiAlias(true);
         sk_tool_utils::set_portable_typeface(&titlePaint);
         titlePaint.setTextSize(15 * SK_Scalar1);
-        const char title[] = "Line Closed Drawn Into Rectangle Clips With "
-                             "Indicated Style, Fill and Linecaps, with stroke width 10";
+        const char titleNoClose[] = "Line Drawn Into Rectangle Clips With "
+            "Indicated Style, Fill and Linecaps, with stroke width 10";
+        const char titleClose[] = "Line Closed Drawn Into Rectangle Clips With "
+            "Indicated Style, Fill and Linecaps, with stroke width 10";
+        const char* title = doClose ? titleClose : titleNoClose;
         canvas->drawText(title, strlen(title),
                             20 * SK_Scalar1,
                             20 * SK_Scalar1,
@@ -256,7 +108,7 @@ protected:
                     }
 
                     SkColor color = sk_tool_utils::color_to_565(0xff007000);
-                    this->drawPath(path.fPath, canvas, color, rect,
+                    drawPath(path.fPath, canvas, color, rect,
                                     gCaps[cap].fCap, gCaps[cap].fJoin, gStyles[style].fStyle,
                                     gFills[fill].fFill, SK_Scalar1*10);
 
@@ -291,18 +143,10 @@ protected:
         }
         canvas->restore();
         canvas->restore();
-    }
-
-private:
-    typedef GM INHERITED;
-};
-
-//////////////////////////////////////////////////////////////////////////////
-
-static GM* LinePathFactory(void*) { return new LinePathGM; }
-static GMRegistry regLinePath(LinePathFactory);
-
-static GM* LineClosePathFactory(void*) { return new LineClosePathGM; }
-static GMRegistry regLineClosePath(LineClosePathFactory);
-
+}
+DEF_SIMPLE_GM(linepath, canvas, 1240, 390) {
+    draw(canvas, false);
+}
+DEF_SIMPLE_GM(lineclosepath, canvas, 1240, 390) {
+    draw(canvas, true);
 }