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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/thumbnails/thumbnail_tab_helper.h"
#include "base/basictypes.h"
#include "base/stringprintf.h"
#include "chrome/common/render_messages.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/public/test/mock_render_process_host.h"
#include "content/public/test/test_renderer_host.h"
#include "skia/ext/platform_canvas.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkColorPriv.h"
#include "ui/gfx/canvas.h"
#include "ui/surface/transport_dib.h"
using content::WebContents;
typedef testing::Test ThumbnailTabHelperTest;
TEST_F(ThumbnailTabHelperTest, CalculateBoringScore_Empty) {
SkBitmap bitmap;
EXPECT_DOUBLE_EQ(1.0, ThumbnailTabHelper::CalculateBoringScore(bitmap));
}
TEST_F(ThumbnailTabHelperTest, CalculateBoringScore_SingleColor) {
const gfx::Size kSize(20, 10);
gfx::Canvas canvas(kSize, ui::SCALE_FACTOR_100P, true);
// Fill all pixels in black.
canvas.FillRect(gfx::Rect(kSize), SK_ColorBLACK);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The thumbnail should deserve the highest boring score.
EXPECT_DOUBLE_EQ(1.0, ThumbnailTabHelper::CalculateBoringScore(bitmap));
}
TEST_F(ThumbnailTabHelperTest, CalculateBoringScore_TwoColors) {
const gfx::Size kSize(20, 10);
gfx::Canvas canvas(kSize, ui::SCALE_FACTOR_100P, true);
// Fill all pixels in black.
canvas.FillRect(gfx::Rect(kSize), SK_ColorBLACK);
// Fill the left half pixels in white.
canvas.FillRect(gfx::Rect(0, 0, kSize.width() / 2, kSize.height()),
SK_ColorWHITE);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
ASSERT_EQ(kSize.width(), bitmap.width());
ASSERT_EQ(kSize.height(), bitmap.height());
// The thumbnail should be less boring because two colors are used.
EXPECT_DOUBLE_EQ(0.5, ThumbnailTabHelper::CalculateBoringScore(bitmap));
}
TEST_F(ThumbnailTabHelperTest, GetClippedBitmap_TallerThanWide) {
// The input bitmap is vertically long.
gfx::Canvas canvas(gfx::Size(40, 90), ui::SCALE_FACTOR_100P, true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is square.
ThumbnailTabHelper::ClipResult clip_result = ThumbnailTabHelper::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailTabHelper::GetClippedBitmap(
bitmap, 10, 10, &clip_result);
// The clipped bitmap should be square.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(40, clipped_bitmap.height());
// The input was taller than wide.
EXPECT_EQ(ThumbnailTabHelper::kTallerThanWide, clip_result);
}
TEST_F(ThumbnailTabHelperTest, GetClippedBitmap_WiderThanTall) {
// The input bitmap is horizontally long.
gfx::Canvas canvas(gfx::Size(70, 40), ui::SCALE_FACTOR_100P, true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is square.
ThumbnailTabHelper::ClipResult clip_result = ThumbnailTabHelper::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailTabHelper::GetClippedBitmap(
bitmap, 10, 10, &clip_result);
// The clipped bitmap should be square.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(40, clipped_bitmap.height());
// The input was wider than tall.
EXPECT_EQ(ThumbnailTabHelper::kWiderThanTall, clip_result);
}
TEST_F(ThumbnailTabHelperTest, GetClippedBitmap_TooWiderThanTall) {
// The input bitmap is horizontally very long.
gfx::Canvas canvas(gfx::Size(90, 40), ui::SCALE_FACTOR_100P, true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is square.
ThumbnailTabHelper::ClipResult clip_result = ThumbnailTabHelper::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailTabHelper::GetClippedBitmap(
bitmap, 10, 10, &clip_result);
// The clipped bitmap should be square.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(40, clipped_bitmap.height());
// The input was wider than tall.
EXPECT_EQ(ThumbnailTabHelper::kTooWiderThanTall, clip_result);
}
TEST_F(ThumbnailTabHelperTest, GetClippedBitmap_NotClipped) {
// The input bitmap is square.
gfx::Canvas canvas(gfx::Size(40, 40), ui::SCALE_FACTOR_100P, true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is square.
ThumbnailTabHelper::ClipResult clip_result = ThumbnailTabHelper::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailTabHelper::GetClippedBitmap(
bitmap, 10, 10, &clip_result);
// The clipped bitmap should be square.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(40, clipped_bitmap.height());
// There was no need to clip.
EXPECT_EQ(ThumbnailTabHelper::kNotClipped, clip_result);
}
TEST_F(ThumbnailTabHelperTest, GetClippedBitmap_NonSquareOutput) {
// The input bitmap is square.
gfx::Canvas canvas(gfx::Size(40, 40), ui::SCALE_FACTOR_100P, true);
SkBitmap bitmap =
skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(false);
// The desired size is horizontally long.
ThumbnailTabHelper::ClipResult clip_result = ThumbnailTabHelper::kNotClipped;
SkBitmap clipped_bitmap = ThumbnailTabHelper::GetClippedBitmap(
bitmap, 20, 10, &clip_result);
// The clipped bitmap should have the same aspect ratio of the desired size.
EXPECT_EQ(40, clipped_bitmap.width());
EXPECT_EQ(20, clipped_bitmap.height());
// The input was taller than wide.
EXPECT_EQ(ThumbnailTabHelper::kTallerThanWide, clip_result);
}
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