| /* |
| * 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 "gm/gm.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorSpace.h" |
| #include "include/core/SkFont.h" |
| #include "include/core/SkFontStyle.h" |
| #include "include/core/SkFontTypes.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPixmap.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkTypeface.h" |
| #include "include/core/SkTypes.h" |
| #include "tools/DecodeUtils.h" |
| #include "tools/Resources.h" |
| #include "tools/ToolUtils.h" |
| #include "tools/fonts/FontToolUtils.h" |
| |
| #include <string.h> |
| #include <initializer_list> |
| |
| static SkBitmap copy_bitmap(const SkBitmap& src, SkColorType colorType) { |
| const SkBitmap* srcPtr = &src; |
| SkBitmap tmp(src); |
| if (kRGB_565_SkColorType == colorType) { |
| tmp.setAlphaType(kOpaque_SkAlphaType); |
| srcPtr = &tmp; |
| } |
| |
| SkBitmap copy; |
| ToolUtils::copy_to(©, colorType, *srcPtr); |
| 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; |
| } |
| 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, const SkFont& font, SkColor color, |
| SkScalar x, SkScalar y, SkCanvas* canvas) { |
| SkRect bounds; |
| font.measureText(&c, 1, SkTextEncoding::kUTF8, &bounds); |
| canvas->drawSimpleText(&c, 1, SkTextEncoding::kUTF8, |
| x - bounds.centerX(), y - bounds.centerY(), |
| font, SkPaint(SkColor4f::FromColor(color))); |
| } |
| |
| static void color_wheel_native(SkCanvas* canvas) { |
| SkAutoCanvasRestore autoCanvasRestore(canvas, true); |
| canvas->translate(0.5f * SCALE, 0.5f * SCALE); |
| canvas->drawCircle(0.0f, 0.0f, SCALE * 0.5f, SkPaint(SkColors::kWhite)); |
| |
| 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; |
| |
| SkFont font; |
| font.setEdging(SkFont::Edging::kAlias); |
| font.setTypeface(ToolUtils::CreatePortableTypeface("Sans", SkFontStyle::Bold())); |
| font.setSize(0.28125f * SCALE); |
| draw_center_letter('K', font, SK_ColorBLACK, Z, Z, canvas); |
| draw_center_letter('R', font, SK_ColorRED, Z, D, canvas); |
| draw_center_letter('G', font, SK_ColorGREEN, -X, -Y, canvas); |
| draw_center_letter('B', font, SK_ColorBLUE, X, -Y, canvas); |
| draw_center_letter('C', font, SK_ColorCYAN, Z, -D, canvas); |
| draw_center_letter('M', font, SK_ColorMAGENTA, X, Y, canvas); |
| draw_center_letter('Y', font, 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 void draw(SkCanvas* canvas, |
| const SkPaint& p, |
| const SkFont& font, |
| const SkBitmap& src, |
| SkColorType colorType, |
| const char text[]) { |
| SkASSERT(src.colorType() == colorType); |
| canvas->drawImage(src.asImage(), 0.0f, 0.0f); |
| canvas->drawSimpleText(text, strlen(text), SkTextEncoding::kUTF8, 0.0f, 12.0f, font, p); |
| } |
| |
| DEF_SIMPLE_GM(all_bitmap_configs, canvas, SCALE, 6 * SCALE) { |
| SkAutoCanvasRestore autoCanvasRestore(canvas, true); |
| SkPaint p(SkColors::kBlack); |
| p.setAntiAlias(true); |
| |
| SkFont font = ToolUtils::DefaultPortableFont(); |
| |
| ToolUtils::draw_checkerboard(canvas, SK_ColorLTGRAY, SK_ColorWHITE, 8); |
| |
| SkBitmap bitmap; |
| if (ToolUtils::GetResourceAsBitmap("images/color_wheel.png", &bitmap)) { |
| bitmap.setImmutable(); |
| draw(canvas, p, font, 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, font, 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, font, copy4444, kARGB_4444_SkColorType, "ARGB 4444"); |
| |
| canvas->translate(0.0f, SkIntToScalar(SCALE)); |
| SkBitmap copyF16 = copy_bitmap(bitmap, kRGBA_F16_SkColorType); |
| draw(canvas, p, font, copyF16, kRGBA_F16_SkColorType, "RGBA F16"); |
| |
| } else { |
| canvas->translate(0.0f, SkIntToScalar(3 * SCALE)); |
| } |
| |
| canvas->translate(0.0f, SkIntToScalar(SCALE)); |
| SkBitmap bitmapA8 = make_bitmap(kAlpha_8_SkColorType); |
| draw(canvas, p, font, 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, font, bitmapG8, kGray_8_SkColorType, "Gray 8"); |
| } |
| |
| sk_sp<SkImage> make_not_native32_color_wheel() { |
| SkBitmap n32bitmap, notN32bitmap; |
| n32bitmap.allocN32Pixels(SCALE, SCALE); |
| n32bitmap.eraseColor(SK_ColorTRANSPARENT); |
| SkCanvas n32canvas(n32bitmap); |
| color_wheel_native(&n32canvas); |
| #if SK_PMCOLOR_BYTE_ORDER(B,G,R,A) |
| const SkColorType ct = kRGBA_8888_SkColorType; |
| #elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A) |
| const SkColorType ct = kBGRA_8888_SkColorType; |
| #endif |
| static_assert(ct != kN32_SkColorType, "BRGA!=RGBA"); |
| SkAssertResult(ToolUtils::copy_to(¬N32bitmap, ct, n32bitmap)); |
| SkASSERT(notN32bitmap.colorType() == ct); |
| return notN32bitmap.asImage(); |
| } |
| |
| DEF_SIMPLE_GM(not_native32_bitmap_config, canvas, SCALE, SCALE) { |
| sk_sp<SkImage> notN32image(make_not_native32_color_wheel()); |
| SkASSERT(notN32image); |
| ToolUtils::draw_checkerboard(canvas, SK_ColorLTGRAY, SK_ColorWHITE, 8); |
| canvas->drawImage(notN32image.get(), 0.0f, 0.0f); |
| } |
| |
| static uint32_t make_pixel(int x, int y, SkAlphaType alphaType) { |
| SkASSERT(x >= 0 && x < SCALE); |
| SkASSERT(y >= 0 && y < SCALE); |
| |
| SkScalar R = SCALE / 2.0f; |
| |
| uint32_t alpha = 0x00; |
| |
| if ((x - R) * (x - R) + (y - R) * (y - R) < R * R) { |
| alpha = 0xFF; |
| } |
| |
| uint32_t component; |
| switch (alphaType) { |
| case kPremul_SkAlphaType: |
| component = alpha; |
| break; |
| case kUnpremul_SkAlphaType: |
| component = 0xFF; |
| break; |
| default: |
| SK_ABORT("Should not get here - invalid alpha type"); |
| } |
| return alpha << 24 | component; |
| } |
| |
| static void make_color_test_bitmap_variant( |
| SkColorType colorType, |
| SkAlphaType alphaType, |
| sk_sp<SkColorSpace> colorSpace, |
| SkBitmap* bm) |
| { |
| SkASSERT(colorType == kRGBA_8888_SkColorType || colorType == kBGRA_8888_SkColorType); |
| SkASSERT(alphaType == kPremul_SkAlphaType || alphaType == kUnpremul_SkAlphaType); |
| bm->allocPixels( |
| SkImageInfo::Make(SCALE, SCALE, colorType, alphaType, colorSpace)); |
| const SkPixmap& pm = bm->pixmap(); |
| for (int y = 0; y < pm.height(); y++) { |
| for (int x = 0; x < pm.width(); x++) { |
| *pm.writable_addr32(x, y) = make_pixel(x, y, alphaType); |
| } |
| } |
| } |
| |
| DEF_SIMPLE_GM(all_variants_8888, canvas, 4 * SCALE + 30, 2 * SCALE + 10) { |
| ToolUtils::draw_checkerboard(canvas, SK_ColorLTGRAY, SK_ColorWHITE, 8); |
| |
| sk_sp<SkColorSpace> colorSpaces[] { |
| SkColorSpace::MakeSRGB(), |
| nullptr, |
| }; |
| for (const sk_sp<SkColorSpace>& colorSpace : colorSpaces) { |
| canvas->save(); |
| for (auto alphaType : {kPremul_SkAlphaType, kUnpremul_SkAlphaType}) { |
| canvas->save(); |
| for (auto colorType : {kRGBA_8888_SkColorType, kBGRA_8888_SkColorType}) { |
| SkBitmap bm; |
| make_color_test_bitmap_variant(colorType, alphaType, colorSpace, &bm); |
| canvas->drawImage(bm.asImage(), 0.0f, 0.0f); |
| canvas->translate(SCALE + 10, 0.0f); |
| } |
| canvas->restore(); |
| canvas->translate(0.0f, SCALE + 10); |
| } |
| canvas->restore(); |
| canvas->translate(2 * (SCALE + 10), 0.0f); |
| } |
| } |