1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// This file provides the embedder's side of the Clipboard interface. 6 7#include "content/renderer/renderer_clipboard_client.h" 8 9#include "base/memory/shared_memory.h" 10#include "base/strings/string16.h" 11#include "content/common/clipboard_messages.h" 12#include "content/public/renderer/content_renderer_client.h" 13#include "content/renderer/render_thread_impl.h" 14#include "content/renderer/scoped_clipboard_writer_glue.h" 15#include "ui/base/clipboard/clipboard.h" 16#include "ui/gfx/size.h" 17 18namespace content { 19 20namespace { 21 22class RendererClipboardWriteContext : public ClipboardClient::WriteContext { 23 public: 24 RendererClipboardWriteContext(); 25 virtual ~RendererClipboardWriteContext(); 26 virtual void WriteBitmapFromPixels(ui::Clipboard::ObjectMap* objects, 27 const void* pixels, 28 const gfx::Size& size) OVERRIDE; 29 virtual void Flush(const ui::Clipboard::ObjectMap& objects) OVERRIDE; 30 31 private: 32 scoped_ptr<base::SharedMemory> shared_buf_; 33 DISALLOW_COPY_AND_ASSIGN(RendererClipboardWriteContext); 34}; 35 36RendererClipboardWriteContext::RendererClipboardWriteContext() { 37} 38 39RendererClipboardWriteContext::~RendererClipboardWriteContext() { 40} 41 42// This definition of WriteBitmapFromPixels uses shared memory to communicate 43// across processes. 44void RendererClipboardWriteContext::WriteBitmapFromPixels( 45 ui::Clipboard::ObjectMap* objects, 46 const void* pixels, 47 const gfx::Size& size) { 48 // Do not try to write a bitmap more than once 49 if (shared_buf_) 50 return; 51 52 uint32 buf_size = 4 * size.width() * size.height(); 53 54 // Allocate a shared memory buffer to hold the bitmap bits. 55 shared_buf_.reset(ChildThread::current()->AllocateSharedMemory(buf_size)); 56 if (!shared_buf_) 57 return; 58 59 // Copy the bits into shared memory 60 DCHECK(shared_buf_->memory()); 61 memcpy(shared_buf_->memory(), pixels, buf_size); 62 shared_buf_->Unmap(); 63 64 ui::Clipboard::ObjectMapParam size_param; 65 const char* size_data = reinterpret_cast<const char*>(&size); 66 for (size_t i = 0; i < sizeof(gfx::Size); ++i) 67 size_param.push_back(size_data[i]); 68 69 ui::Clipboard::ObjectMapParams params; 70 71 // The first parameter is replaced on the receiving end with a pointer to 72 // a shared memory object containing the bitmap. We reserve space for it here. 73 ui::Clipboard::ObjectMapParam place_holder_param; 74 params.push_back(place_holder_param); 75 params.push_back(size_param); 76 (*objects)[ui::Clipboard::CBF_SMBITMAP] = params; 77} 78 79// Flushes the objects to the clipboard with an IPC. 80void RendererClipboardWriteContext::Flush( 81 const ui::Clipboard::ObjectMap& objects) { 82 if (shared_buf_) { 83 RenderThreadImpl::current()->Send( 84 new ClipboardHostMsg_WriteObjectsSync(objects, shared_buf_->handle())); 85 } else { 86 RenderThreadImpl::current()->Send( 87 new ClipboardHostMsg_WriteObjectsAsync(objects)); 88 } 89} 90 91} // anonymous namespace 92 93RendererClipboardClient::RendererClipboardClient() { 94} 95 96RendererClipboardClient::~RendererClipboardClient() { 97} 98 99ui::Clipboard* RendererClipboardClient::GetClipboard() { 100 return NULL; 101} 102 103uint64 RendererClipboardClient::GetSequenceNumber(ui::ClipboardType type) { 104 uint64 sequence_number = 0; 105 RenderThreadImpl::current()->Send( 106 new ClipboardHostMsg_GetSequenceNumber(type, &sequence_number)); 107 return sequence_number; 108} 109 110bool RendererClipboardClient::IsFormatAvailable( 111 const ui::Clipboard::FormatType& format, 112 ui::ClipboardType type) { 113 bool result; 114 RenderThreadImpl::current()->Send( 115 new ClipboardHostMsg_IsFormatAvailable(format, type, &result)); 116 return result; 117} 118 119void RendererClipboardClient::Clear(ui::ClipboardType type) { 120 RenderThreadImpl::current()->Send(new ClipboardHostMsg_Clear(type)); 121} 122 123void RendererClipboardClient::ReadAvailableTypes( 124 ui::ClipboardType type, 125 std::vector<base::string16>* types, 126 bool* contains_filenames) { 127 RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadAvailableTypes( 128 type, types, contains_filenames)); 129} 130 131void RendererClipboardClient::ReadText(ui::ClipboardType type, 132 base::string16* result) { 133 RenderThreadImpl::current()->Send( 134 new ClipboardHostMsg_ReadText(type, result)); 135} 136 137void RendererClipboardClient::ReadAsciiText(ui::ClipboardType type, 138 std::string* result) { 139 RenderThreadImpl::current()->Send( 140 new ClipboardHostMsg_ReadAsciiText(type, result)); 141} 142 143void RendererClipboardClient::ReadHTML(ui::ClipboardType type, 144 base::string16* markup, 145 GURL* url, uint32* fragment_start, 146 uint32* fragment_end) { 147 RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadHTML( 148 type, markup, url, fragment_start, fragment_end)); 149} 150 151void RendererClipboardClient::ReadRTF(ui::ClipboardType type, 152 std::string* result) { 153 RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadRTF(type, result)); 154} 155 156void RendererClipboardClient::ReadImage(ui::ClipboardType type, 157 std::string* data) { 158 base::SharedMemoryHandle image_handle; 159 uint32 image_size; 160 RenderThreadImpl::current()->Send( 161 new ClipboardHostMsg_ReadImage(type, &image_handle, &image_size)); 162 if (base::SharedMemory::IsHandleValid(image_handle)) { 163 base::SharedMemory buffer(image_handle, true); 164 buffer.Map(image_size); 165 data->append(static_cast<char*>(buffer.memory()), image_size); 166 } 167} 168 169void RendererClipboardClient::ReadCustomData(ui::ClipboardType clipboard_type, 170 const base::string16& type, 171 base::string16* data) { 172 RenderThreadImpl::current()->Send( 173 new ClipboardHostMsg_ReadCustomData(clipboard_type, type, data)); 174} 175 176void RendererClipboardClient::ReadData(const ui::Clipboard::FormatType& format, 177 std::string* data) { 178 RenderThreadImpl::current()->Send( 179 new ClipboardHostMsg_ReadData(format, data)); 180} 181 182ClipboardClient::WriteContext* RendererClipboardClient::CreateWriteContext() { 183 return new RendererClipboardWriteContext; 184} 185 186} // namespace content 187