From 47ca036e29aa44f93d2300f5ed0109b3845d30d6 Mon Sep 17 00:00:00 2001
From: "reed@android.com"
 <reed@android.com@2bbb7eff-a529-9590-31e7-b0007b416f81>
Date: Wed, 2 Sep 2009 02:07:45 +0000
Subject: add

git-svn-id: http://skia.googlecode.com/svn/trunk@349 2bbb7eff-a529-9590-31e7-b0007b416f81
---
 samplecode/SampleBlur.cpp | 84 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 samplecode/SampleBlur.cpp

(limited to 'samplecode/SampleBlur.cpp')

diff --git a/samplecode/SampleBlur.cpp b/samplecode/SampleBlur.cpp
new file mode 100644
index 0000000000..13bf10ad19
--- /dev/null
+++ b/samplecode/SampleBlur.cpp
@@ -0,0 +1,84 @@
+#include "SampleCode.h"
+#include "SkBlurMaskFilter.h"
+#include "SkColorPriv.h"
+#include "SkGradientShader.h"
+#include "SkView.h"
+#include "SkCanvas.h"
+#include "SkUtils.h"
+
+static SkBitmap make_bitmap() {
+    SkBitmap bm;
+    SkColorTable* ctable = new SkColorTable(256);
+
+    SkPMColor* c = ctable->lockColors();
+    for (int i = 0; i < 256; i++) {
+        c[i] = SkPackARGB32(255 - i, 0, 0, 0);
+    }
+    ctable->unlockColors(true);
+    bm.setConfig(SkBitmap::kIndex8_Config, 256, 256);
+    bm.allocPixels(ctable);
+    ctable->unref();
+
+    bm.lockPixels();
+    const float cx = bm.width() * 0.5f;
+    const float cy = bm.height() * 0.5f;
+    for (int y = 0; y < bm.height(); y++) {
+        float dy = y - cy;
+        dy *= dy;
+        uint8_t* p = bm.getAddr8(0, y);
+        for (int x = 0; x < 256; x++) {
+            float dx = x - cx;
+            dx *= dx;
+            float d = (dx + dy) / (cx/2);
+            int id = (int)d;
+            if (id > 255) {
+                id = 255;
+            }
+            p[x] = id;
+        }
+    }
+    bm.unlockPixels();
+    return bm;
+}
+
+class BlurView : public SkView {
+    SkBitmap    fBM;
+public:
+	BlurView() {
+    }
+    
+protected:
+    // overrides from SkEventSink
+    virtual bool onQuery(SkEvent* evt) {
+        if (SampleCode::TitleQ(*evt)) {
+            SampleCode::TitleR(evt, "Blur");
+            return true;
+        }
+        return this->INHERITED::onQuery(evt);
+    }
+    
+    void drawBG(SkCanvas* canvas) {
+        canvas->drawColor(0xFFDDDDDD);
+    }
+    
+    virtual void onDraw(SkCanvas* canvas) {
+        drawBG(canvas);
+
+        SkMaskFilter* mf = SkBlurMaskFilter::Create(20, SkBlurMaskFilter::kOuter_BlurStyle);
+        SkPaint paint;
+        paint.setAntiAlias(true);
+        
+        canvas->drawCircle(100, 100, 50, paint);
+        paint.setMaskFilter(mf)->unref();
+        canvas->drawCircle(200, 100, 50, paint);
+    }
+    
+private:
+    typedef SkView INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static SkView* MyFactory() { return new BlurView; }
+static SkViewRegister reg(MyFactory);
+
-- 
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