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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.
// This file provides the embedder's side of the Clipboard interface.
#include "content/renderer/renderer_clipboard_client.h"
#include "base/memory/shared_memory.h"
#include "base/strings/string16.h"
#include "content/common/clipboard_messages.h"
#include "content/public/renderer/content_renderer_client.h"
#include "content/renderer/render_thread_impl.h"
#include "content/renderer/scoped_clipboard_writer_glue.h"
#include "ui/base/clipboard/clipboard.h"
#include "ui/gfx/size.h"
namespace content {
namespace {
class RendererClipboardWriteContext : public ClipboardClient::WriteContext {
public:
RendererClipboardWriteContext();
virtual ~RendererClipboardWriteContext();
virtual void WriteBitmapFromPixels(ui::Clipboard::ObjectMap* objects,
const void* pixels,
const gfx::Size& size) OVERRIDE;
virtual void Flush(const ui::Clipboard::ObjectMap& objects) OVERRIDE;
private:
scoped_ptr<base::SharedMemory> shared_buf_;
DISALLOW_COPY_AND_ASSIGN(RendererClipboardWriteContext);
};
RendererClipboardWriteContext::RendererClipboardWriteContext() {
}
RendererClipboardWriteContext::~RendererClipboardWriteContext() {
}
// This definition of WriteBitmapFromPixels uses shared memory to communicate
// across processes.
void RendererClipboardWriteContext::WriteBitmapFromPixels(
ui::Clipboard::ObjectMap* objects,
const void* pixels,
const gfx::Size& size) {
// Do not try to write a bitmap more than once
if (shared_buf_)
return;
uint32 buf_size = 4 * size.width() * size.height();
// Allocate a shared memory buffer to hold the bitmap bits.
shared_buf_.reset(ChildThread::current()->AllocateSharedMemory(buf_size));
if (!shared_buf_)
return;
// Copy the bits into shared memory
DCHECK(shared_buf_->memory());
memcpy(shared_buf_->memory(), pixels, buf_size);
shared_buf_->Unmap();
ui::Clipboard::ObjectMapParam size_param;
const char* size_data = reinterpret_cast<const char*>(&size);
for (size_t i = 0; i < sizeof(gfx::Size); ++i)
size_param.push_back(size_data[i]);
ui::Clipboard::ObjectMapParams params;
// The first parameter is replaced on the receiving end with a pointer to
// a shared memory object containing the bitmap. We reserve space for it here.
ui::Clipboard::ObjectMapParam place_holder_param;
params.push_back(place_holder_param);
params.push_back(size_param);
(*objects)[ui::Clipboard::CBF_SMBITMAP] = params;
}
// Flushes the objects to the clipboard with an IPC.
void RendererClipboardWriteContext::Flush(
const ui::Clipboard::ObjectMap& objects) {
if (shared_buf_) {
RenderThreadImpl::current()->Send(
new ClipboardHostMsg_WriteObjectsSync(objects, shared_buf_->handle()));
} else {
RenderThreadImpl::current()->Send(
new ClipboardHostMsg_WriteObjectsAsync(objects));
}
}
} // anonymous namespace
RendererClipboardClient::RendererClipboardClient() {
}
RendererClipboardClient::~RendererClipboardClient() {
}
ui::Clipboard* RendererClipboardClient::GetClipboard() {
return NULL;
}
uint64 RendererClipboardClient::GetSequenceNumber(ui::ClipboardType type) {
uint64 sequence_number = 0;
RenderThreadImpl::current()->Send(
new ClipboardHostMsg_GetSequenceNumber(type, &sequence_number));
return sequence_number;
}
bool RendererClipboardClient::IsFormatAvailable(
const ui::Clipboard::FormatType& format,
ui::ClipboardType type) {
bool result;
RenderThreadImpl::current()->Send(
new ClipboardHostMsg_IsFormatAvailable(format, type, &result));
return result;
}
void RendererClipboardClient::Clear(ui::ClipboardType type) {
RenderThreadImpl::current()->Send(new ClipboardHostMsg_Clear(type));
}
void RendererClipboardClient::ReadAvailableTypes(
ui::ClipboardType type,
std::vector<base::string16>* types,
bool* contains_filenames) {
RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadAvailableTypes(
type, types, contains_filenames));
}
void RendererClipboardClient::ReadText(ui::ClipboardType type,
base::string16* result) {
RenderThreadImpl::current()->Send(
new ClipboardHostMsg_ReadText(type, result));
}
void RendererClipboardClient::ReadAsciiText(ui::ClipboardType type,
std::string* result) {
RenderThreadImpl::current()->Send(
new ClipboardHostMsg_ReadAsciiText(type, result));
}
void RendererClipboardClient::ReadHTML(ui::ClipboardType type,
base::string16* markup,
GURL* url, uint32* fragment_start,
uint32* fragment_end) {
RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadHTML(
type, markup, url, fragment_start, fragment_end));
}
void RendererClipboardClient::ReadRTF(ui::ClipboardType type,
std::string* result) {
RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadRTF(type, result));
}
void RendererClipboardClient::ReadImage(ui::ClipboardType type,
std::string* data) {
base::SharedMemoryHandle image_handle;
uint32 image_size;
RenderThreadImpl::current()->Send(
new ClipboardHostMsg_ReadImage(type, &image_handle, &image_size));
if (base::SharedMemory::IsHandleValid(image_handle)) {
base::SharedMemory buffer(image_handle, true);
buffer.Map(image_size);
data->append(static_cast<char*>(buffer.memory()), image_size);
}
}
void RendererClipboardClient::ReadCustomData(ui::ClipboardType clipboard_type,
const base::string16& type,
base::string16* data) {
RenderThreadImpl::current()->Send(
new ClipboardHostMsg_ReadCustomData(clipboard_type, type, data));
}
void RendererClipboardClient::ReadData(const ui::Clipboard::FormatType& format,
std::string* data) {
RenderThreadImpl::current()->Send(
new ClipboardHostMsg_ReadData(format, data));
}
ClipboardClient::WriteContext* RendererClipboardClient::CreateWriteContext() {
return new RendererClipboardWriteContext;
}
} // namespace content
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