ui/gfx/ipc/gfx_param_traits.cc

   1 // Copyright 2014 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 #include "ui/gfx/ipc/gfx_param_traits.h"
   6
   7 #include <string>
   8
   9 #include "third_party/skia/include/core/SkBitmap.h"
  10 #include "ui/gfx/geometry/point3_f.h"
  11 #include "ui/gfx/geometry/rect.h"
  12 #include "ui/gfx/geometry/rect_f.h"
  13 #include "ui/gfx/range/range.h"
  14
  15 namespace {
  16
  17 struct SkBitmap_Data {
  18   // The color type for the bitmap (bits per pixel, etc).
  19   SkColorType fColorType;
  20
  21   // The alpha type for the bitmap (opaque, premul, unpremul).
  22   SkAlphaType fAlphaType;
  23
  24   // The width of the bitmap in pixels.
  25   uint32 fWidth;
  26
  27   // The height of the bitmap in pixels.
  28   uint32 fHeight;
  29
  30   void InitSkBitmapDataForTransfer(const SkBitmap& bitmap) {
  31     const SkImageInfo& info = bitmap.info();
  32     fColorType = info.colorType();
  33     fAlphaType = info.alphaType();
  34     fWidth = info.width();
  35     fHeight = info.height();
  36   }
  37
  38   // Returns whether |bitmap| successfully initialized.
  39   bool InitSkBitmapFromData(SkBitmap* bitmap,
  40                             const char* pixels,
  41                             size_t pixels_size) const {
  42     if (!bitmap->tryAllocPixels(
  43             SkImageInfo::Make(fWidth, fHeight, fColorType, fAlphaType)))
  44       return false;
  45     if (pixels_size != bitmap->getSize())
  46       return false;
  47     memcpy(bitmap->getPixels(), pixels, pixels_size);
  48     return true;
  49   }
  50 };
  51
  52 }  // namespace
  53
  54 namespace IPC {
  55
  56 void ParamTraits<gfx::Point>::Write(Message* m, const gfx::Point& p) {
  57   WriteParam(m, p.x());
  58   WriteParam(m, p.y());
  59 }
  60
  61 bool ParamTraits<gfx::Point>::Read(const Message* m,
  62                                    base::PickleIterator* iter,
  63                                    gfx::Point* r) {
  64   int x, y;
  65   if (!ReadParam(m, iter, &x) || !ReadParam(m, iter, &y))
  66     return false;
  67   r->set_x(x);
  68   r->set_y(y);
  69   return true;
  70 }
  71
  72 void ParamTraits<gfx::Point>::Log(const gfx::Point& p, std::string* l) {
  73   l->append(base::StringPrintf("(%d, %d)", p.x(), p.y()));
  74 }
  75
  76 void ParamTraits<gfx::PointF>::Write(Message* m, const gfx::PointF& p) {
  77   WriteParam(m, p.x());
  78   WriteParam(m, p.y());
  79 }
  80
  81 bool ParamTraits<gfx::PointF>::Read(const Message* m,
  82                                     base::PickleIterator* iter,
  83                                     gfx::PointF* r) {
  84   float x, y;
  85   if (!ReadParam(m, iter, &x) || !ReadParam(m, iter, &y))
  86     return false;
  87   r->set_x(x);
  88   r->set_y(y);
  89   return true;
  90 }
  91
  92 void ParamTraits<gfx::PointF>::Log(const gfx::PointF& p, std::string* l) {
  93   l->append(base::StringPrintf("(%f, %f)", p.x(), p.y()));
  94 }
  95
  96 void ParamTraits<gfx::Point3F>::Write(Message* m, const gfx::Point3F& p) {
  97   WriteParam(m, p.x());
  98   WriteParam(m, p.y());
  99   WriteParam(m, p.z());
 100 }
 101
 102 bool ParamTraits<gfx::Point3F>::Read(const Message* m,
 103                                      base::PickleIterator* iter,
 104                                      gfx::Point3F* r) {
 105   float x, y, z;
 106   if (!ReadParam(m, iter, &x) || !ReadParam(m, iter, &y) ||
 107       !ReadParam(m, iter, &z))
 108     return false;
 109   r->set_x(x);
 110   r->set_y(y);
 111   r->set_z(z);
 112   return true;
 113 }
 114
 115 void ParamTraits<gfx::Point3F>::Log(const gfx::Point3F& p, std::string* l) {
 116   l->append(base::StringPrintf("(%f, %f, %f)", p.x(), p.y(), p.z()));
 117 }
 118
 119 void ParamTraits<gfx::Size>::Write(Message* m, const gfx::Size& p) {
 120   DCHECK_GE(p.width(), 0);
 121   DCHECK_GE(p.height(), 0);
 122   int values[2] = { p.width(), p.height() };
 123   m->WriteBytes(&values, sizeof(int) * 2);
 124 }
 125
 126 bool ParamTraits<gfx::Size>::Read(const Message* m,
 127                                   base::PickleIterator* iter,
 128                                   gfx::Size* r) {
 129   const char* char_values;
 130   if (!iter->ReadBytes(&char_values, sizeof(int) * 2))
 131     return false;
 132   const int* values = reinterpret_cast<const int*>(char_values);
 133   if (values[0] < 0 || values[1] < 0)
 134     return false;
 135   r->set_width(values[0]);
 136   r->set_height(values[1]);
 137   return true;
 138 }
 139
 140 void ParamTraits<gfx::Size>::Log(const gfx::Size& p, std::string* l) {
 141   l->append(base::StringPrintf("(%d, %d)", p.width(), p.height()));
 142 }
 143
 144 void ParamTraits<gfx::SizeF>::Write(Message* m, const gfx::SizeF& p) {
 145   float values[2] = { p.width(), p.height() };
 146   m->WriteBytes(&values, sizeof(float) * 2);
 147 }
 148
 149 bool ParamTraits<gfx::SizeF>::Read(const Message* m,
 150                                    base::PickleIterator* iter,
 151                                    gfx::SizeF* r) {
 152   const char* char_values;
 153   if (!iter->ReadBytes(&char_values, sizeof(float) * 2))
 154     return false;
 155   const float* values = reinterpret_cast<const float*>(char_values);
 156   r->set_width(values[0]);
 157   r->set_height(values[1]);
 158   return true;
 159 }
 160
 161 void ParamTraits<gfx::SizeF>::Log(const gfx::SizeF& p, std::string* l) {
 162   l->append(base::StringPrintf("(%f, %f)", p.width(), p.height()));
 163 }
 164
 165 void ParamTraits<gfx::Vector2d>::Write(Message* m, const gfx::Vector2d& p) {
 166   int values[2] = { p.x(), p.y() };
 167   m->WriteBytes(&values, sizeof(int) * 2);
 168 }
 169
 170 bool ParamTraits<gfx::Vector2d>::Read(const Message* m,
 171                                       base::PickleIterator* iter,
 172                                       gfx::Vector2d* r) {
 173   const char* char_values;
 174   if (!iter->ReadBytes(&char_values, sizeof(int) * 2))
 175     return false;
 176   const int* values = reinterpret_cast<const int*>(char_values);
 177   r->set_x(values[0]);
 178   r->set_y(values[1]);
 179   return true;
 180 }
 181
 182 void ParamTraits<gfx::Vector2d>::Log(const gfx::Vector2d& v, std::string* l) {
 183   l->append(base::StringPrintf("(%d, %d)", v.x(), v.y()));
 184 }
 185
 186 void ParamTraits<gfx::Vector2dF>::Write(Message* m, const gfx::Vector2dF& p) {
 187   float values[2] = { p.x(), p.y() };
 188   m->WriteBytes(&values, sizeof(float) * 2);
 189 }
 190
 191 bool ParamTraits<gfx::Vector2dF>::Read(const Message* m,
 192                                        base::PickleIterator* iter,
 193                                        gfx::Vector2dF* r) {
 194   const char* char_values;
 195   if (!iter->ReadBytes(&char_values, sizeof(float) * 2))
 196     return false;
 197   const float* values = reinterpret_cast<const float*>(char_values);
 198   r->set_x(values[0]);
 199   r->set_y(values[1]);
 200   return true;
 201 }
 202
 203 void ParamTraits<gfx::Vector2dF>::Log(const gfx::Vector2dF& v, std::string* l) {
 204   l->append(base::StringPrintf("(%f, %f)", v.x(), v.y()));
 205 }
 206
 207 void ParamTraits<gfx::Rect>::Write(Message* m, const gfx::Rect& p) {
 208   int values[4] = { p.x(), p.y(), p.width(), p.height() };
 209   m->WriteBytes(&values, sizeof(int) * 4);
 210 }
 211
 212 bool ParamTraits<gfx::Rect>::Read(const Message* m,
 213                                   base::PickleIterator* iter,
 214                                   gfx::Rect* r) {
 215   const char* char_values;
 216   if (!iter->ReadBytes(&char_values, sizeof(int) * 4))
 217     return false;
 218   const int* values = reinterpret_cast<const int*>(char_values);
 219   if (values[2] < 0 || values[3] < 0)
 220     return false;
 221   r->SetRect(values[0], values[1], values[2], values[3]);
 222   return true;
 223 }
 224
 225 void ParamTraits<gfx::Rect>::Log(const gfx::Rect& p, std::string* l) {
 226   l->append(base::StringPrintf("(%d, %d, %d, %d)", p.x(), p.y(),
 227                                p.width(), p.height()));
 228 }
 229
 230 void ParamTraits<gfx::RectF>::Write(Message* m, const gfx::RectF& p) {
 231   float values[4] = { p.x(), p.y(), p.width(), p.height() };
 232   m->WriteBytes(&values, sizeof(float) * 4);
 233 }
 234
 235 bool ParamTraits<gfx::RectF>::Read(const Message* m,
 236                                    base::PickleIterator* iter,
 237                                    gfx::RectF* r) {
 238   const char* char_values;
 239   if (!iter->ReadBytes(&char_values, sizeof(float) * 4))
 240     return false;
 241   const float* values = reinterpret_cast<const float*>(char_values);
 242   r->SetRect(values[0], values[1], values[2], values[3]);
 243   return true;
 244 }
 245
 246 void ParamTraits<gfx::RectF>::Log(const gfx::RectF& p, std::string* l) {
 247   l->append(base::StringPrintf("(%f, %f, %f, %f)", p.x(), p.y(),
 248                                p.width(), p.height()));
 249 }
 250
 251 void ParamTraits<SkBitmap>::Write(Message* m, const SkBitmap& p) {
 252   size_t fixed_size = sizeof(SkBitmap_Data);
 253   SkBitmap_Data bmp_data;
 254   bmp_data.InitSkBitmapDataForTransfer(p);
 255   m->WriteData(reinterpret_cast<const char*>(&bmp_data),
 256                static_cast<int>(fixed_size));
 257   size_t pixel_size = p.getSize();
 258   SkAutoLockPixels p_lock(p);
 259   m->WriteData(reinterpret_cast<const char*>(p.getPixels()),
 260                static_cast<int>(pixel_size));
 261 }
 262
 263 bool ParamTraits<SkBitmap>::Read(const Message* m,
 264                                  base::PickleIterator* iter,
 265                                  SkBitmap* r) {
 266   const char* fixed_data;
 267   int fixed_data_size = 0;
 268   if (!iter->ReadData(&fixed_data, &fixed_data_size) ||
 269      (fixed_data_size <= 0)) {
 270     NOTREACHED();
 271     return false;
 272   }
 273   if (fixed_data_size != sizeof(SkBitmap_Data))
 274     return false;  // Message is malformed.
 275
 276   const char* variable_data;
 277   int variable_data_size = 0;
 278   if (!iter->ReadData(&variable_data, &variable_data_size) ||
 279      (variable_data_size < 0)) {
 280     NOTREACHED();
 281     return false;
 282   }
 283   const SkBitmap_Data* bmp_data =
 284       reinterpret_cast<const SkBitmap_Data*>(fixed_data);
 285   return bmp_data->InitSkBitmapFromData(r, variable_data, variable_data_size);
 286 }
 287
 288 void ParamTraits<SkBitmap>::Log(const SkBitmap& p, std::string* l) {
 289   l->append("<SkBitmap>");
 290 }
 291
 292 void ParamTraits<gfx::Range>::Write(Message* m, const gfx::Range& r) {
 293   m->WriteSizeT(r.start());
 294   m->WriteSizeT(r.end());
 295 }
 296
 297 bool ParamTraits<gfx::Range>::Read(const Message* m,
 298                                    base::PickleIterator* iter,
 299                                    gfx::Range* r) {
 300   size_t start, end;
 301   if (!iter->ReadSizeT(&start) || !iter->ReadSizeT(&end))
 302     return false;
 303   r->set_start(start);
 304   r->set_end(end);
 305   return true;
 306 }
 307
 308 void ParamTraits<gfx::Range>::Log(const gfx::Range& r, std::string* l) {
 309   l->append(base::StringPrintf("(%" PRIuS ", %" PRIuS ")", r.start(), r.end()));
 310 }
 311
 312 }  // namespace IPC
 313
 314 // Generate param traits write methods.
 315 #include "ipc/param_traits_write_macros.h"
 316 namespace IPC {
 317 #undef UI_GFX_IPC_GFX_PARAM_TRAITS_MACROS_H_
 318 #include "ui/gfx/ipc/gfx_param_traits_macros.h"
 319 }  // namespace IPC
 320
 321 // Generate param traits read methods.
 322 #include "ipc/param_traits_read_macros.h"
 323 namespace IPC {
 324 #undef UI_GFX_IPC_GFX_PARAM_TRAITS_MACROS_H_
 325 #include "ui/gfx/ipc/gfx_param_traits_macros.h"
 326 }  // namespace IPC
 327
 328 // Generate param traits log methods.
 329 #include "ipc/param_traits_log_macros.h"
 330 namespace IPC {
 331 #undef UI_GFX_IPC_GFX_PARAM_TRAITS_MACROS_H_
 332 #include "ui/gfx/ipc/gfx_param_traits_macros.h"
 333 }  // namespace IPC