add setXYWH to rects

new tests for circles



git-svn-id: http://skia.googlecode.com/svn/trunk@877 2bbb7eff-a529-9590-31e7-b0007b416f81

include/core/SkRect.h

@@ -95,6 +95,13 @@ struct SkIRect {
         fBottom = bottom;
     }
 
+    void setXYWH(int32_t x, int32_t y, int32_t width, int32_t height) {
+        fLeft = x;
+        fTop = y;
+        fRight = x + width;
+        fBottom = y + height;
+    }
+    
     /** Offset set the rectangle by adding dx to its left and right,
         and adding dy to its top and bottom.
     */
@@ -348,6 +355,13 @@ struct SkRect {
     */
     void set(const SkPoint pts[], int count);
 
+    void setXYWH(SkScalar x, SkScalar y, SkScalar width, SkScalar height) {
+        fLeft = x;
+        fTop = y;
+        fRight = x + width;
+        fBottom = y + height;
+    }
+
     /** Offset set the rectangle by adding dx to its left and right,
         and adding dy to its top and bottom.
     */

samplecode/SampleOvalTest.cpp

@@ -0,0 +1,114 @@
+#include "SampleCode.h"
+#include "SkView.h"
+#include "SkCanvas.h"
+
+static const int kILimit = 101;
+static const SkScalar kLimit = SK_Scalar1 * kILimit;
+
+class OvalTestView : public SkView {
+public:
+    SkSize      fSize;
+    SkPMColor   fInsideColor;   // signals an interior pixel that was not set
+    SkPMColor   fOutsideColor;  // signals an exterior pixels that was set
+    SkBitmap    fBitmap;
+
+	OvalTestView() {
+        fSize.set(SK_Scalar1, SK_Scalar1);
+
+        fBitmap.setConfig(SkBitmap::kARGB_8888_Config, kILimit, kILimit);
+        fBitmap.allocPixels();
+
+        fInsideColor = SkPreMultiplyColor(SK_ColorRED);
+        fOutsideColor = SkPreMultiplyColor(SK_ColorGREEN);
+    }
+
+protected:
+    // overrides from SkEventSink
+    virtual bool onQuery(SkEvent* evt) {
+        if (SampleCode::TitleQ(*evt)) {
+            SampleCode::TitleR(evt, "OvalTest");
+            return true;
+        }
+        return this->INHERITED::onQuery(evt);
+    }
+
+    void drawBG(SkCanvas* canvas) {
+        canvas->drawColor(0xFFDDDDDD);
+    }
+
+    void drawOval() {
+        SkCanvas canvas(fBitmap);
+        SkPaint p;
+
+        fBitmap.eraseColor(0);
+        canvas.drawOval(SkRect::MakeSize(fSize), p);
+    }
+
+    int checkOval(int* flatCount, int* buldgeCount) {
+        int flatc = 0;
+        int buldgec = 0;
+        const SkScalar rad = SkScalarHalf(fSize.width());
+        SkScalar cx = SkScalarHalf(fSize.width());
+        SkScalar cy = SkScalarHalf(fSize.height());
+        for (int y = 0; y < kILimit; y++) {
+            for (int x = 0; x < kILimit; x++) {
+                // measure from pixel centers
+                SkScalar px = SkIntToScalar(x) + SK_ScalarHalf;
+                SkScalar py = SkIntToScalar(y) + SK_ScalarHalf;
+
+                SkPMColor* ptr = fBitmap.getAddr32(x, y);
+                SkScalar dist = SkPoint::Length(px - cx, py - cy);
+                if (dist <= rad && !*ptr) {
+                    flatc++;
+                    *ptr = fInsideColor;
+                } else if (dist > rad && *ptr) {
+                    buldgec++;
+                    *ptr = fOutsideColor;
+                }
+            }
+        }
+        if (flatCount) *flatCount = flatc;
+        if (buldgeCount) *buldgeCount = buldgec;
+        return flatc + buldgec;
+    }
+
+    virtual void onDraw(SkCanvas* canvas) {
+        this->drawBG(canvas);
+
+        this->drawOval();
+        int flatCount, buldgeCount;
+        this->checkOval(&flatCount, &buldgeCount);
+        this->inval(NULL);
+
+        canvas->drawBitmap(fBitmap, SkIntToScalar(20), SkIntToScalar(20), NULL);
+
+
+        static int gFlatCount;
+        static int gBuldgeCount;
+        gFlatCount += flatCount;
+        gBuldgeCount += buldgeCount;
+
+        if (fSize.fWidth < kLimit) {
+            SkDebugf("--- width=%g, flat=%d buldge=%d total: flat=%d buldge=%d\n", fSize.fWidth,
+                     flatCount, buldgeCount, gFlatCount, gBuldgeCount);
+            fSize.fWidth += SK_Scalar1;
+            fSize.fHeight += SK_Scalar1;
+        } else {
+         //   fSize.set(SK_Scalar1, SK_Scalar1);
+        }
+    }
+
+    virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
+        this->inval(NULL);
+        return NULL;
+    }
+
+private:
+    typedef SkView INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+
+static SkView* MyFactory() { return new OvalTestView; }
+static SkViewRegister reg(MyFactory);
+