move inset out of SkRRect.h for now, and add experimental versions to gm

git-svn-id: http://skia.googlecode.com/svn/trunk@6833 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 59 insertions, 29 deletions

diff --git a/gm/rrect.cpp b/gm/rrect.cpp
index 62ca533453..4cbf5030c2 100644
--- a/gm/rrect.cpp
+++ b/gm/rrect.cpp
@@ -10,44 +10,67 @@
 #include "SkRRect.h"
 #include "SkPath.h"
 
+typedef void (*InsetProc)(const SkRRect&, SkScalar dx, SkScalar dy, SkRRect*);
+
+static void inset0(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
+    SkRect r = src.rect();
+
+    r.inset(dx, dy);
+    if (r.isEmpty()) {
+        dst->setEmpty();
+        return;
+    }
+    
+    SkVector radii[4];
+    for (int i = 0; i < 4; ++i) {
+        radii[i] = src.radii((SkRRect::Corner)i);
+    }
+    for (int i = 0; i < 4; ++i) {
+        radii[i].fX -= dx;
+        radii[i].fY -= dy;
+    }
+    dst->setRectRadii(r, radii);
+}
+
+static void inset1(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
+    SkRect r = src.rect();
+
+    r.inset(dx, dy);
+    if (r.isEmpty()) {
+        dst->setEmpty();
+        return;
+    }
+    
+    SkVector radii[4];
+    for (int i = 0; i < 4; ++i) {
+        radii[i] = src.radii((SkRRect::Corner)i);
+    }
+    dst->setRectRadii(r, radii);
+}
+
 static void draw_rrect_color(SkCanvas* canvas, const SkRRect& rrect) {
     SkPaint paint;
     paint.setAntiAlias(true);
-    
+    paint.setStyle(SkPaint::kStroke_Style);
+
     if (rrect.isRect()) {
         paint.setColor(SK_ColorRED);
     } else if (rrect.isOval()) {
-        paint.setColor(SK_ColorGREEN);
+        paint.setColor(0xFF008800);
     } else if (rrect.isSimple()) {
         paint.setColor(SK_ColorBLUE);
     } else {
-        paint.setColor(SK_ColorGRAY);
+        paint.setColor(SK_ColorBLACK);
     }
     canvas->drawRRect(rrect, paint);
 }
 
-static void drawrr(SkCanvas* canvas, const SkRRect& rrect) {
-    SkRRect inner, outer, inner2;
-    
-    SkScalar dx = 30;
-    SkScalar dy = 30;
-
-    rrect.outset(dx, dy, &outer);
-    rrect.inset(dx/2, dy/2, &inner);
-    rrect.inset(dx, dy, &inner2);
-
-    draw_rrect_color(canvas, outer);
-    draw_rrect_color(canvas, rrect);
-    draw_rrect_color(canvas, inner);
-    draw_rrect_color(canvas, inner2);
-
-    SkPaint paint;
-    paint.setAntiAlias(true);
-    paint.setStyle(SkPaint::kStroke_Style);
-    paint.setColor(SK_ColorDKGRAY);
-    canvas->drawRRect(rrect, paint);
-    canvas->drawRRect(inner, paint);
-    canvas->drawRRect(inner2, paint);
+static void drawrr(SkCanvas* canvas, const SkRRect& rrect, InsetProc proc) {
+    SkRRect rr;
+    for (SkScalar d = -30; d <= 30; d += 10) {
+        proc(rrect, d, d, &rr);
+        draw_rrect_color(canvas, rr);
+    }
 }
 
 class RRectGM : public skiagm::GM {
@@ -64,8 +87,10 @@ protected:
     }
     
     virtual void onDraw(SkCanvas* canvas) {
+        static const InsetProc insetProcs[] = { inset0, inset1 };
+
         SkRRect rrect[4];
-        SkRect r = { 0, 0, 120, 240 };
+        SkRect r = { 0, 0, 120, 160 };
         SkVector radii[4] = {
             { 0, 0 }, { 20, 20 }, { 10, 40 }, { 40, 40 }
         };
@@ -76,9 +101,14 @@ protected:
         rrect[3].setRectRadii(r, radii);
 
         canvas->translate(50, 50);
-        for (size_t i = 0; i < SK_ARRAY_COUNT(rrect); ++i) {
-            drawrr(canvas, rrect[i]);
-            canvas->translate(rrect[i].width() * 2, 0);
+        for (size_t j = 0; j < SK_ARRAY_COUNT(insetProcs); ++j) {
+            canvas->save();
+            for (size_t i = 0; i < SK_ARRAY_COUNT(rrect); ++i) {
+                drawrr(canvas, rrect[i], insetProcs[j]);
+                canvas->translate(rrect[i].width() * 5 / 3, 0);
+            }
+            canvas->restore();
+            canvas->translate(0, rrect[0].height() * 5 / 3);
         }
     }