Revert "[PDF] Add unpremultiply support and a GM (try3)."

gm/bitmappremul.cpp

-/*
- * Copyright 2013 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "gm.h"
-#include "SkBitmap.h"
-#include "SkCanvas.h"
-#include "SkColorPriv.h"
-
-/**
- * This GM checks that bitmap pixels are unpremultiplied before being exported
- * to other formats. If unpremultiplication is implemented properly, this
- * GM should come out completely white. If not, this GM looks like a row of two
- * greyscale gradients above a row of grey lines.
- * This tests both the ARGB4444 and ARGB8888 bitmap configurations.
- */
-
-static const int SLIDE_SIZE = 256;
-static const int PIXEL_SIZE_8888 = SLIDE_SIZE / 256;
-static const int PIXEL_SIZE_4444 = SLIDE_SIZE / 16;
-
-static SkBitmap init_bitmap(SkBitmap::Config config) {
-    SkBitmap bitmap;
-    bitmap.setConfig(config, SLIDE_SIZE, SLIDE_SIZE);
-    bitmap.allocPixels();
-    bitmap.eraseColor(SK_ColorWHITE);
-    return bitmap;
-}
-
-static SkBitmap make_argb8888_gradient() {
-    SkBitmap bitmap = init_bitmap(SkBitmap::kARGB_8888_Config);
-    uint8_t rowColor = 0;
-    for (int y = 0; y < SLIDE_SIZE; y++) {
-        uint32_t* dst = bitmap.getAddr32(0, y);
-        for (int x = 0; x < SLIDE_SIZE; x++) {
-            dst[x] = SkPackARGB32(rowColor, rowColor,
-                                  rowColor, rowColor);
-        }
-        if (y % PIXEL_SIZE_8888 == PIXEL_SIZE_8888 - 1) {
-            rowColor++;
-        }
-    }
-    return bitmap;
-}
-
-static SkBitmap make_argb4444_gradient() {
-    SkBitmap bitmap = init_bitmap(SkBitmap::kARGB_4444_Config);
-    uint8_t rowColor = 0;
-    for (int y = 0; y < SLIDE_SIZE; y++) {
-        uint16_t* dst = bitmap.getAddr16(0, y);
-        for (int x = 0; x < SLIDE_SIZE; x++) {
-            dst[x] = SkPackARGB4444(rowColor, rowColor,
-                                    rowColor, rowColor);
-        }
-        if (y % PIXEL_SIZE_4444 == PIXEL_SIZE_4444 - 1) {
-            rowColor++;
-        }
-    }
-    return bitmap;
-}
-
-static SkBitmap make_argb8888_stripes() {
-    SkBitmap bitmap = init_bitmap(SkBitmap::kARGB_8888_Config);
-    uint8_t rowColor = 0;
-    for (int y = 0; y < SLIDE_SIZE; y++) {
-        uint32_t* dst = bitmap.getAddr32(0, y);
-        for (int x = 0; x < SLIDE_SIZE; x++) {
-            dst[x] = SkPackARGB32(rowColor, rowColor,
-                                  rowColor, rowColor);
-        }
-        if (rowColor == 0) {
-            rowColor = 255;
-        } else {
-            rowColor = 0;
-        }
-    }
-    return bitmap;
-}
-
-static SkBitmap make_argb4444_stripes() {
-    SkBitmap bitmap = init_bitmap(SkBitmap::kARGB_4444_Config);
-    uint8_t rowColor = 0;;
-    for (int y = 0; y < SLIDE_SIZE; y++) {
-        uint16_t* dst = bitmap.getAddr16(0, y);
-        for (int x = 0; x < SLIDE_SIZE; x++) {
-            dst[x] = SkPackARGB4444(rowColor, rowColor,
-                                    rowColor, rowColor);
-        }
-        if (rowColor == 0) {
-            rowColor = 15;
-        } else {
-            rowColor = 0;
-        }
-    }
-    return bitmap;
-}
-
-namespace skiagm {
-
-class BitmapPremulGM : public GM {
-public:
-    BitmapPremulGM() {
-        this->setBGColor(SK_ColorWHITE);
-    }
-
-protected:
-    SkString onShortName() SK_OVERRIDE {
-        return SkString("bitmap_premul");
-    }
-
-    virtual SkISize onISize() SK_OVERRIDE {
-        return SkISize::Make(SLIDE_SIZE * 2, SLIDE_SIZE * 2);
-    }
-
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
-        SkScalar slideSize = SkIntToScalar(SLIDE_SIZE);
-        canvas->drawBitmap(make_argb8888_gradient(), 0, 0);
-        canvas->drawBitmap(make_argb4444_gradient(), slideSize, 0);
-        canvas->drawBitmap(make_argb8888_stripes(), 0, slideSize);
-        canvas->drawBitmap(make_argb4444_stripes(), slideSize, slideSize);
-    }
-
-private:
-    typedef GM INHERITED;
-};
-
-DEF_GM( return new BitmapPremulGM; )
-}