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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#import "ui/base/clipboard/clipboard_mac.h"
#import <AppKit/AppKit.h>
#import <PDFKit/PDFKit.h>
#include <vector>
#include "base/apple/scoped_cftyperef.h"
#include "base/mac/mac_util.h"
#include "base/memory/free_deleter.h"
#include "base/memory/ref_counted.h"
#include "base/test/task_environment.h"
#include "base/test/test_future.h"
#include "testing/platform_test.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/base/clipboard/clipboard_buffer.h"
#include "ui/base/clipboard/clipboard_monitor.h"
#include "ui/base/clipboard/clipboard_observer.h"
#include "ui/base/clipboard/clipboard_util_mac.h"
#include "ui/base/clipboard/scoped_clipboard_writer.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/skia_util.h"
namespace ui {
namespace {
// CGDataProviderReleaseDataCallback that releases the CreateImage buffer.
void CreateImageBufferReleaser(void* info, const void* data, size_t size) {
DCHECK_EQ(info, data);
free(info);
}
class TestClipboardObserver : public ClipboardObserver {
public:
TestClipboardObserver() {
ClipboardMonitor::GetInstance()->AddObserver(this);
}
~TestClipboardObserver() override {
ClipboardMonitor::GetInstance()->RemoveObserver(this);
}
void OnClipboardDataChanged() override { ++data_changed_count_; }
int data_changed_count() const { return data_changed_count_; }
private:
int data_changed_count_ = 0;
};
} // namespace
class ClipboardMacTest : public PlatformTest {
public:
ClipboardMacTest()
: task_environment_(base::test::TaskEnvironment::MainThreadType::IO) {}
NSImage* CreateImage(int32_t width, int32_t height, bool retina) {
int32_t pixel_width = retina ? width * 2 : width;
int32_t pixel_height = retina ? height * 2 : height;
// It seems more natural to create an NSBitmapImageRep and set it as the
// representation for an NSImage. This doesn't work, because when the
// result is written, and then read from an NSPasteboard, the new NSImage
// loses its "retina-ness".
uint8_t* buffer =
static_cast<uint8_t*>(calloc(pixel_width * pixel_height, 4));
base::apple::ScopedCFTypeRef<CGDataProviderRef> provider(
CGDataProviderCreateWithData(buffer, buffer,
(pixel_width * pixel_height * 4),
&CreateImageBufferReleaser));
base::apple::ScopedCFTypeRef<CGColorSpaceRef> color_space(
CGColorSpaceCreateWithName(kCGColorSpaceSRGB));
base::apple::ScopedCFTypeRef<CGImageRef> image_ref(
CGImageCreate(pixel_width, pixel_height, 8, 32, 4 * pixel_width,
color_space.get(), kCGImageAlphaLast, provider.get(),
nullptr, NO, kCGRenderingIntentDefault));
return [[NSImage alloc] initWithCGImage:image_ref.get()
size:NSMakeSize(width, height)];
}
std::vector<uint8_t> ReadPngSync(ClipboardMac* clipboard_mac,
NSPasteboard* pasteboard) {
base::test::TestFuture<std::vector<uint8_t>> future;
clipboard_mac->ReadPngInternal(
ClipboardBuffer::kCopyPaste, pasteboard,
future.GetCallback<const std::vector<uint8_t>&>());
return future.Get();
}
void WriteBitmap(ClipboardMac* clipboard_mac,
const SkBitmap& bitmap,
NSPasteboard* pasteboard) {
clipboard_mac->WriteBitmapInternal(bitmap, pasteboard);
}
std::optional<DataTransferEndpoint> GetSource(
const ClipboardMac* clipboard_mac,
NSPasteboard* pasteboard) {
return clipboard_mac->GetSourceInternal(ClipboardBuffer::kCopyPaste,
pasteboard);
}
void Clear(ClipboardMac* clipboard_mac, NSPasteboard* pasteboard) {
clipboard_mac->ClearInternal(ClipboardBuffer::kCopyPaste, pasteboard);
}
void WritePortableAndPlatformRepresentations(
ClipboardMac* clipboard_mac,
std::unique_ptr<DataTransferEndpoint> data_src,
NSPasteboard* pasteboard) {
clipboard_mac->WritePortableAndPlatformRepresentationsInternal(
ClipboardBuffer::kCopyPaste, /*objects=*/{}, /*raw_objects=*/{},
/*platform_representations=*/{}, std::move(data_src), pasteboard,
/*privacy_types=*/0);
}
private:
base::test::TaskEnvironment task_environment_;
};
TEST_F(ClipboardMacTest, ReadImageRetina) {
int32_t width = 99;
int32_t height = 101;
scoped_refptr<UniquePasteboard> pasteboard = new UniquePasteboard;
[pasteboard->get() writeObjects:@[ CreateImage(width, height, true) ]];
Clipboard* clipboard = Clipboard::GetForCurrentThread();
ClipboardMac* clipboard_mac = static_cast<ClipboardMac*>(clipboard);
std::vector<uint8_t> png_data = ReadPngSync(clipboard_mac, pasteboard->get());
SkBitmap bitmap = gfx::PNGCodec::Decode(png_data);
ASSERT_FALSE(bitmap.isNull());
EXPECT_EQ(2 * width, bitmap.width());
EXPECT_EQ(2 * height, bitmap.height());
}
TEST_F(ClipboardMacTest, ReadImageNonRetina) {
int32_t width = 99;
int32_t height = 101;
scoped_refptr<UniquePasteboard> pasteboard = new UniquePasteboard;
[pasteboard->get() writeObjects:@[ CreateImage(width, height, false) ]];
Clipboard* clipboard = Clipboard::GetForCurrentThread();
ClipboardMac* clipboard_mac = static_cast<ClipboardMac*>(clipboard);
std::vector<uint8_t> png_data = ReadPngSync(clipboard_mac, pasteboard->get());
SkBitmap bitmap = gfx::PNGCodec::Decode(png_data);
ASSERT_FALSE(bitmap.isNull());
EXPECT_EQ(width, bitmap.width());
EXPECT_EQ(height, bitmap.height());
}
TEST_F(ClipboardMacTest, EmptyImage) {
NSImage* image = [[NSImage alloc] init];
scoped_refptr<UniquePasteboard> pasteboard = new UniquePasteboard;
[pasteboard->get() writeObjects:@[ image ]];
Clipboard* clipboard = Clipboard::GetForCurrentThread();
ClipboardMac* clipboard_mac = static_cast<ClipboardMac*>(clipboard);
std::vector<uint8_t> png_data = ReadPngSync(clipboard_mac, pasteboard->get());
SkBitmap bitmap = gfx::PNGCodec::Decode(png_data);
ASSERT_TRUE(bitmap.isNull());
}
TEST_F(ClipboardMacTest, PDFImage) {
int32_t width = 99;
int32_t height = 101;
PDFPage* page = [[PDFPage alloc] init];
[page setBounds:NSMakeRect(0, 0, width, height)
forBox:kPDFDisplayBoxMediaBox];
PDFDocument* pdf_document = [[PDFDocument alloc] init];
[pdf_document insertPage:page atIndex:0];
NSData* pdf_data = [pdf_document dataRepresentation];
scoped_refptr<UniquePasteboard> pasteboard = new UniquePasteboard;
[pasteboard->get() setData:pdf_data forType:NSPasteboardTypePDF];
Clipboard* clipboard = Clipboard::GetForCurrentThread();
ClipboardMac* clipboard_mac = static_cast<ClipboardMac*>(clipboard);
std::vector<uint8_t> png_data = ReadPngSync(clipboard_mac, pasteboard->get());
SkBitmap bitmap = gfx::PNGCodec::Decode(png_data);
ASSERT_FALSE(bitmap.isNull());
EXPECT_EQ(width, bitmap.width());
EXPECT_EQ(height, bitmap.height());
}
TEST_F(ClipboardMacTest, WriteBitmapAddsPNGToClipboard) {
int32_t width = 99;
int32_t height = 101;
scoped_refptr<UniquePasteboard> pasteboard = new UniquePasteboard;
Clipboard* clipboard = Clipboard::GetForCurrentThread();
ClipboardMac* clipboard_mac = static_cast<ClipboardMac*>(clipboard);
SkBitmap bitmap;
bitmap.allocN32Pixels(width, height);
bitmap.eraseColor(SK_ColorRED);
WriteBitmap(clipboard_mac, bitmap, pasteboard->get());
NSData* data = [pasteboard->get() dataForType:NSPasteboardTypePNG];
ASSERT_TRUE(data);
const uint8_t* bytes = static_cast<const uint8_t*>(data.bytes);
std::vector<uint8_t> png_data(bytes, bytes + data.length);
SkBitmap result_bitmap = gfx::PNGCodec::Decode(png_data);
ASSERT_FALSE(result_bitmap.isNull());
EXPECT_TRUE(gfx::BitmapsAreEqual(bitmap, result_bitmap));
}
TEST_F(ClipboardMacTest, SourceTracking) {
TestClipboardObserver observer;
scoped_refptr<UniquePasteboard> pasteboard = new UniquePasteboard;
Clipboard* clipboard = Clipboard::GetForCurrentThread();
ClipboardMac* clipboard_mac = static_cast<ClipboardMac*>(clipboard);
GURL google_url = GURL("https://www.google.com");
WritePortableAndPlatformRepresentations(
clipboard_mac, std::make_unique<DataTransferEndpoint>(google_url),
pasteboard->get());
ASSERT_EQ(observer.data_changed_count(), 1);
auto source = GetSource(clipboard_mac, pasteboard->get());
ASSERT_TRUE(source);
ASSERT_TRUE(source->IsUrlType());
ASSERT_EQ(*source->GetURL(), google_url);
GURL chromium_url = GURL("https://chromium.org");
WritePortableAndPlatformRepresentations(
clipboard_mac, std::make_unique<DataTransferEndpoint>(chromium_url),
pasteboard->get());
ASSERT_EQ(observer.data_changed_count(), 2);
source = GetSource(clipboard_mac, pasteboard->get());
ASSERT_TRUE(source);
ASSERT_TRUE(source->IsUrlType());
ASSERT_EQ(*source->GetURL(), chromium_url);
Clear(clipboard_mac, pasteboard->get());
ASSERT_FALSE(GetSource(clipboard_mac, pasteboard->get()));
}
} // namespace ui
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