From 8a1c16ff38322f0210116fa7293eb8817c7e477e Mon Sep 17 00:00:00 2001
From: "reed@android.com"
 <reed@android.com@2bbb7eff-a529-9590-31e7-b0007b416f81>
Date: Wed, 17 Dec 2008 15:59:43 +0000
Subject: grab from latest android

git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81
---
 samplecode/SampleFilter2.cpp | 124 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 samplecode/SampleFilter2.cpp

(limited to 'samplecode/SampleFilter2.cpp')

diff --git a/samplecode/SampleFilter2.cpp b/samplecode/SampleFilter2.cpp
new file mode 100644
index 0000000000..30ac2bd001
--- /dev/null
+++ b/samplecode/SampleFilter2.cpp
@@ -0,0 +1,124 @@
+#include "SampleCode.h"
+#include "SkView.h"
+#include "SkCanvas.h"
+#include "SkGradientShader.h"
+#include "SkGraphics.h"
+#include "SkImageDecoder.h"
+#include "SkPath.h"
+#include "SkPorterDuff.h"
+#include "SkRegion.h"
+#include "SkShader.h"
+#include "SkUtils.h"
+#include "SkXfermode.h"
+#include "SkShaderExtras.h"
+#include "SkColorPriv.h"
+#include "SkColorFilter.h"
+#include "SkTime.h"
+
+static const char* gNames[] = {
+    "/skimages/background_01.png"
+};
+
+class Filter2View : public SkView {
+public:
+    SkBitmap*   fBitmaps;
+    int         fBitmapCount;
+    int         fCurrIndex;
+
+	Filter2View() {
+        fBitmapCount = SK_ARRAY_COUNT(gNames)*2;
+        fBitmaps = new SkBitmap[fBitmapCount];
+        
+        for (int i = 0; i < fBitmapCount/2; i++) {
+            SkImageDecoder::DecodeFile(gNames[i], &fBitmaps[i],
+                                       SkBitmap::kARGB_8888_Config,
+                                       SkImageDecoder::kDecodePixels_Mode);
+        }
+        for (int i = fBitmapCount/2; i < fBitmapCount; i++) {
+            SkImageDecoder::DecodeFile(gNames[i-fBitmapCount/2], &fBitmaps[i],
+                                       SkBitmap::kRGB_565_Config,
+                                       SkImageDecoder::kDecodePixels_Mode);
+        }
+        fCurrIndex = 0;
+    }
+    
+    virtual ~Filter2View() {
+        delete[] fBitmaps;
+    }
+    
+protected:
+    // overrides from SkEventSink
+    virtual bool onQuery(SkEvent* evt) {
+        if (SampleCode::TitleQ(*evt)) {
+            SkString str("Filter/Dither ");
+            str.append(gNames[fCurrIndex]);
+            SampleCode::TitleR(evt, str.c_str());
+            return true;
+        }
+        return this->INHERITED::onQuery(evt);
+    }
+    
+    void drawBG(SkCanvas* canvas) {
+//        canvas->drawColor(0xFFDDDDDD);
+        canvas->drawColor(SK_ColorGRAY);
+//        canvas->drawColor(SK_ColorWHITE);
+    }
+    
+    virtual void onDraw(SkCanvas* canvas) {
+        this->drawBG(canvas);
+        
+        canvas->translate(SkIntToScalar(10), SkIntToScalar(50));
+        
+        const SkScalar W = SkIntToScalar(fBitmaps[0].width() + 1);
+        const SkScalar H = SkIntToScalar(fBitmaps[0].height() + 1);
+        SkPaint paint;
+        
+        const SkScalar scale = SkFloatToScalar(0.897917f);
+        canvas->scale(SK_Scalar1, scale);
+
+        for (int k = 0; k < 2; k++) {
+            paint.setFilterBitmap(k == 1);
+            for (int j = 0; j < 2; j++) {
+                paint.setDither(j == 1);
+                for (int i = 0; i < fBitmapCount; i++) {
+                    SkScalar x = (k * fBitmapCount + j) * W;
+                    SkScalar y = i * H;
+                    x = SkIntToScalar(SkScalarRound(x));
+                    y = SkIntToScalar(SkScalarRound(y));
+                    canvas->drawBitmap(fBitmaps[i], x, y, &paint);
+                    if (i == 0) {
+                        SkPaint p;
+                        p.setAntiAlias(true);
+                        p.setTextAlign(SkPaint::kCenter_Align);
+                        p.setTextSize(SkIntToScalar(18));
+                        SkString s("dither=");
+                        s.appendS32(paint.isDither());
+                        s.append(" filter=");
+                        s.appendS32(paint.isFilterBitmap());
+                        canvas->drawText(s.c_str(), s.size(), x + W/2,
+                                         y - p.getTextSize(), p);
+                    }
+                    if (k+j == 2) {
+                        SkPaint p;
+                        p.setAntiAlias(true);
+                        p.setTextSize(SkIntToScalar(18));
+                        SkString s;
+                        s.append(" depth=");
+                        s.appendS32(fBitmaps[i].config() == SkBitmap::kRGB_565_Config ? 16 : 32);
+                        canvas->drawText(s.c_str(), s.size(), x + W + SkIntToScalar(4),
+                                         y + H/2, p);
+                    }
+                }
+            }
+        }
+    }
+    
+private:
+    typedef SkView INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static SkView* MyFactory() { return new Filter2View; }
+static SkViewRegister reg(MyFactory);
+
-- 
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