grab from latest android
git-svn-id: http://skia.googlecode.com/svn/trunk@27 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleFilter2.cpp b/samplecode/SampleFilter2.cpp
new file mode 100644
index 0000000..30ac2bd
--- /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);
+