content/renderer/renderer_clipboard_delegate.cc

   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_delegate.h"
   8
   9 #include "base/memory/shared_memory.h"
  10 #include "base/numerics/safe_math.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 "third_party/skia/include/core/SkBitmap.h"
  15 #include "ui/base/clipboard/clipboard.h"
  16 #include "ui/gfx/geometry/size.h"
  17
  18 namespace content {
  19
  20 RendererClipboardDelegate::RendererClipboardDelegate() {
  21 }
  22
  23 uint64 RendererClipboardDelegate::GetSequenceNumber(ui::ClipboardType type) {
  24   uint64 sequence_number = 0;
  25   RenderThreadImpl::current()->Send(
  26       new ClipboardHostMsg_GetSequenceNumber(type, &sequence_number));
  27   return sequence_number;
  28 }
  29
  30 bool RendererClipboardDelegate::IsFormatAvailable(
  31     content::ClipboardFormat format,
  32     ui::ClipboardType type) {
  33   bool result = false;
  34   RenderThreadImpl::current()->Send(
  35       new ClipboardHostMsg_IsFormatAvailable(format, type, &result));
  36   return result;
  37 }
  38
  39 void RendererClipboardDelegate::Clear(ui::ClipboardType type) {
  40   RenderThreadImpl::current()->Send(new ClipboardHostMsg_Clear(type));
  41 }
  42
  43 void RendererClipboardDelegate::ReadAvailableTypes(
  44     ui::ClipboardType type,
  45     std::vector<base::string16>* types,
  46     bool* contains_filenames) {
  47   RenderThreadImpl::current()->Send(
  48       new ClipboardHostMsg_ReadAvailableTypes(type, types, contains_filenames));
  49 }
  50
  51 void RendererClipboardDelegate::ReadText(ui::ClipboardType type,
  52                                          base::string16* result) {
  53   RenderThreadImpl::current()->Send(
  54       new ClipboardHostMsg_ReadText(type, result));
  55 }
  56
  57 void RendererClipboardDelegate::ReadHTML(ui::ClipboardType type,
  58                                          base::string16* markup,
  59                                          GURL* url,
  60                                          uint32* fragment_start,
  61                                          uint32* fragment_end) {
  62   RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadHTML(
  63       type, markup, url, fragment_start, fragment_end));
  64 }
  65
  66 void RendererClipboardDelegate::ReadRTF(ui::ClipboardType type,
  67                                         std::string* result) {
  68   RenderThreadImpl::current()->Send(new ClipboardHostMsg_ReadRTF(type, result));
  69 }
  70
  71 void RendererClipboardDelegate::ReadImage(ui::ClipboardType type,
  72                                           std::string* data) {
  73   base::SharedMemoryHandle image_handle;
  74   uint32 image_size = 0;
  75   RenderThreadImpl::current()->Send(
  76       new ClipboardHostMsg_ReadImage(type, &image_handle, &image_size));
  77   if (base::SharedMemory::IsHandleValid(image_handle)) {
  78     base::SharedMemory buffer(image_handle, true);
  79     buffer.Map(image_size);
  80     data->append(static_cast<char*>(buffer.memory()), image_size);
  81   }
  82 }
  83
  84 void RendererClipboardDelegate::ReadCustomData(ui::ClipboardType clipboard_type,
  85                                                const base::string16& type,
  86                                                base::string16* data) {
  87   RenderThreadImpl::current()->Send(
  88       new ClipboardHostMsg_ReadCustomData(clipboard_type, type, data));
  89 }
  90
  91 void RendererClipboardDelegate::WriteText(ui::ClipboardType clipboard_type,
  92                                           const base::string16& text) {
  93   RenderThreadImpl::current()->Send(
  94       new ClipboardHostMsg_WriteText(clipboard_type, text));
  95 }
  96
  97 void RendererClipboardDelegate::WriteHTML(ui::ClipboardType clipboard_type,
  98                                           const base::string16& markup,
  99                                           const GURL& url) {
 100   RenderThreadImpl::current()->Send(
 101       new ClipboardHostMsg_WriteHTML(clipboard_type, markup, url));
 102 }
 103
 104 void RendererClipboardDelegate::WriteSmartPasteMarker(
 105     ui::ClipboardType clipboard_type) {
 106   RenderThreadImpl::current()->Send(
 107       new ClipboardHostMsg_WriteSmartPasteMarker(clipboard_type));
 108 }
 109
 110 void RendererClipboardDelegate::WriteCustomData(
 111     ui::ClipboardType clipboard_type,
 112     const std::map<base::string16, base::string16>& data) {
 113   RenderThreadImpl::current()->Send(
 114       new ClipboardHostMsg_WriteCustomData(clipboard_type, data));
 115 }
 116
 117 void RendererClipboardDelegate::WriteBookmark(ui::ClipboardType clipboard_type,
 118                                               const GURL& url,
 119                                               const base::string16& title) {
 120   RenderThreadImpl::current()->Send(
 121       new ClipboardHostMsg_WriteBookmark(clipboard_type, url, title));
 122 }
 123
 124 bool RendererClipboardDelegate::WriteImage(ui::ClipboardType clipboard_type,
 125                                            const SkBitmap& bitmap) {
 126   // Only 32-bit bitmaps are supported.
 127   DCHECK_EQ(bitmap.colorType(), kN32_SkColorType);
 128
 129   const gfx::Size size(bitmap.width(), bitmap.height());
 130   scoped_ptr<base::SharedMemory> shared_buf;
 131   {
 132     SkAutoLockPixels locked(bitmap);
 133     void* pixels = bitmap.getPixels();
 134     // TODO(piman): this should not be NULL, but it is. crbug.com/369621
 135     if (!pixels)
 136       return false;
 137
 138     base::CheckedNumeric<uint32> checked_buf_size = 4;
 139     checked_buf_size *= size.width();
 140     checked_buf_size *= size.height();
 141     if (!checked_buf_size.IsValid())
 142       return false;
 143
 144     // Allocate a shared memory buffer to hold the bitmap bits.
 145     uint32 buf_size = checked_buf_size.ValueOrDie();
 146     shared_buf = ChildThreadImpl::current()->AllocateSharedMemory(buf_size);
 147     if (!shared_buf)
 148       return false;
 149     if (!shared_buf->Map(buf_size))
 150       return false;
 151     // Copy the bits into shared memory
 152     DCHECK(shared_buf->memory());
 153     memcpy(shared_buf->memory(), pixels, buf_size);
 154     shared_buf->Unmap();
 155   }
 156
 157   RenderThreadImpl::current()->Send(new ClipboardHostMsg_WriteImage(
 158       clipboard_type, size, shared_buf->handle()));
 159   return true;
 160 }
 161
 162 void RendererClipboardDelegate::CommitWrite(ui::ClipboardType clipboard_type) {
 163   RenderThreadImpl::current()->Send(
 164       new ClipboardHostMsg_CommitWrite(clipboard_type));
 165 }
 166
 167 }  // namespace content