PDF: remove last use of SkPDFImage

gm/all_bitmap_configs.cpp

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "sk_tool_utils.h"
+#include "SkSurface.h"
+#include "Resources.h"
+#include "gm.h"
+
+#include "SkMath.h"
+#include "SkColorPriv.h"
+
+static SkBitmap copy_bitmap(const SkBitmap& src, SkColorType colorType) {
+    SkBitmap copy;
+    src.copyTo(&copy, colorType);
+    copy.setImmutable();
+    return copy;
+}
+
+#define SCALE 128
+
+// Make either A8 or gray8 bitmap.
+static SkBitmap make_bitmap(SkColorType ct) {
+    SkBitmap bm;
+    switch (ct) {
+        case kAlpha_8_SkColorType:
+            bm.allocPixels(SkImageInfo::MakeA8(SCALE, SCALE));
+            break;
+        case kGray_8_SkColorType:
+            bm.allocPixels(
+                    SkImageInfo::Make(SCALE, SCALE, ct, kOpaque_SkAlphaType));
+            break;
+        default:
+            SkASSERT(false);
+            return bm;
+    }
+    SkAutoLockPixels autoLockPixels(bm);
+    uint8_t spectrum[256];
+    for (int y = 0; y < 256; ++y) {
+        spectrum[y] = y;
+    }
+    for (int y = 0; y < 128; ++y) {
+        // Shift over one byte each scanline.
+        memcpy(bm.getAddr8(0, y), &spectrum[y], 128);
+    }
+    bm.setImmutable();
+    return bm;
+}
+
+static void draw_center_letter(char c,
+                               SkPaint* p,
+                               SkColor color,
+                               SkScalar x,
+                               SkScalar y,
+                               SkCanvas* canvas) {
+    SkRect bounds;
+    p->setColor(color);
+    p->measureText(&c, 1, &bounds);
+    canvas->drawText(&c, 1, x - bounds.centerX(), y - bounds.centerY(), *p);
+}
+
+static void color_wheel_native(SkCanvas* canvas) {
+    SkAutoCanvasRestore autoCanvasRestore(canvas, true);
+    canvas->translate(0.5f * SCALE, 0.5f * SCALE);
+    SkPaint p;
+    p.setAntiAlias(false);
+    p.setColor(SK_ColorWHITE);
+    canvas->drawCircle(0.0f, 0.0f, SCALE * 0.5f, p);
+
+    const double sqrt_3_over_2 = 0.8660254037844387;
+    const SkScalar Z = 0.0f;
+    const SkScalar D = 0.3f * SkIntToScalar(SCALE);
+    const SkScalar X = SkDoubleToScalar(D * sqrt_3_over_2);
+    const SkScalar Y = D * SK_ScalarHalf;
+    sk_tool_utils::set_portable_typeface(&p, NULL, SkTypeface::kBold);
+    p.setTextSize(0.28125f * SCALE);
+    draw_center_letter('K', &p, SK_ColorBLACK, Z, Z, canvas);
+    draw_center_letter('R', &p, SK_ColorRED, Z, D, canvas);
+    draw_center_letter('G', &p, SK_ColorGREEN, -X, -Y, canvas);
+    draw_center_letter('B', &p, SK_ColorBLUE, X, -Y, canvas);
+    draw_center_letter('C', &p, SK_ColorCYAN, Z, -D, canvas);
+    draw_center_letter('M', &p, SK_ColorMAGENTA, X, Y, canvas);
+    draw_center_letter('Y', &p, SK_ColorYELLOW, -X, Y, canvas);
+}
+
+template <typename T>
+int find(T* array, int N, T item) {
+    for (int i = 0; i < N; ++i) {
+        if (array[i] == item) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+static SkPMColor premultiply_color(SkColor c) {
+    return SkPremultiplyARGBInline(SkColorGetA(c), SkColorGetR(c),
+                                   SkColorGetG(c), SkColorGetB(c));
+}
+
+static SkBitmap indexed_bitmap() {
+    SkBitmap n32bitmap;
+    n32bitmap.allocN32Pixels(SCALE, SCALE);
+    n32bitmap.eraseColor(SK_ColorTRANSPARENT);
+
+    SkCanvas canvas(n32bitmap);
+    color_wheel_native(&canvas);
+    const SkColor colors[] = {
+            SK_ColorTRANSPARENT,
+            SK_ColorWHITE,
+            SK_ColorBLACK,
+            SK_ColorRED,
+            SK_ColorGREEN,
+            SK_ColorBLUE,
+            SK_ColorCYAN,
+            SK_ColorMAGENTA,
+            SK_ColorYELLOW,
+    };
+    SkPMColor pmColors[SK_ARRAY_COUNT(colors)];
+    for (size_t i = 0; i < SK_ARRAY_COUNT(colors); ++i) {
+        pmColors[i] = premultiply_color(colors[i]);
+    }
+    SkBitmap bm;
+    SkAutoTUnref<SkColorTable> ctable(
+            SkNEW_ARGS(SkColorTable, (pmColors, SK_ARRAY_COUNT(pmColors))));
+    SkImageInfo info = SkImageInfo::Make(SCALE, SCALE, kIndex_8_SkColorType,
+                                         kPremul_SkAlphaType);
+    bm.allocPixels(info, NULL, ctable);
+    SkAutoLockPixels autoLockPixels1(n32bitmap);
+    SkAutoLockPixels autoLockPixels2(bm);
+    for (int y = 0; y < SCALE; ++y) {
+        for (int x = 0; x < SCALE; ++x) {
+            SkPMColor c = *n32bitmap.getAddr32(x, y);
+            int idx = find(pmColors, SK_ARRAY_COUNT(pmColors), c);
+            *bm.getAddr8(x, y) = SkClampMax(idx, SK_ARRAY_COUNT(pmColors) - 1);
+        }
+    }
+    return bm;
+}
+
+static void draw(SkCanvas* canvas,
+                 const SkPaint& p,
+                 const SkBitmap& src,
+                 SkColorType colorType,
+                 const char text[]) {
+    SkASSERT(src.colorType() == colorType);
+    canvas->drawBitmap(src, 0.0f, 0.0f);
+    canvas->drawText(text, strlen(text), 0.0f, 12.0f, p);
+}
+
+DEF_SIMPLE_GM(all_bitmap_configs, canvas, SCALE, 6 * SCALE) {
+    SkAutoCanvasRestore autoCanvasRestore(canvas, true);
+    SkPaint p;
+    p.setColor(SK_ColorBLACK);
+    p.setAntiAlias(true);
+    sk_tool_utils::set_portable_typeface(&p, NULL);
+
+    sk_tool_utils::draw_checkerboard(canvas, SK_ColorLTGRAY, SK_ColorWHITE, 8);
+
+    SkBitmap bitmap;
+    if (GetResourceAsBitmap("color_wheel.png", &bitmap)) {
+        bitmap.setImmutable();
+        draw(canvas, p, bitmap, kN32_SkColorType, "Native 32");
+
+        canvas->translate(0.0f, SkIntToScalar(SCALE));
+        SkBitmap copy565 = copy_bitmap(bitmap, kRGB_565_SkColorType);
+        p.setColor(SK_ColorRED);
+        draw(canvas, p, copy565, kRGB_565_SkColorType, "RGB 565");
+        p.setColor(SK_ColorBLACK);
+
+        canvas->translate(0.0f, SkIntToScalar(SCALE));
+        SkBitmap copy4444 = copy_bitmap(bitmap, kARGB_4444_SkColorType);
+        draw(canvas, p, copy4444, kARGB_4444_SkColorType, "ARGB 4444");
+    } else {
+        canvas->translate(0.0f, SkIntToScalar(2 * SCALE));
+    }
+
+    canvas->translate(0.0f, SkIntToScalar(SCALE));
+    SkBitmap bitmapIndexed = indexed_bitmap();
+    draw(canvas, p, bitmapIndexed, kIndex_8_SkColorType, "Index 8");
+
+    canvas->translate(0.0f, SkIntToScalar(SCALE));
+    SkBitmap bitmapA8 = make_bitmap(kAlpha_8_SkColorType);
+    draw(canvas, p, bitmapA8, kAlpha_8_SkColorType, "Alpha 8");
+
+    p.setColor(SK_ColorRED);
+    canvas->translate(0.0f, SkIntToScalar(SCALE));
+    SkBitmap bitmapG8 = make_bitmap(kGray_8_SkColorType);
+    draw(canvas, p, bitmapG8, kGray_8_SkColorType, "Gray 8");
+}