Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_font.cc

+// Copyright (c) 2011 The Native Client Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "native_client/src/shared/ppapi_proxy/plugin_ppb_font.h"
+
+#include "native_client/src/include/nacl_scoped_ptr.h"
+#include "native_client/src/include/portability.h"
+#include "native_client/src/shared/ppapi_proxy/object_serialize.h"
+#include "native_client/src/shared/ppapi_proxy/plugin_callback.h"
+#include "native_client/src/shared/ppapi_proxy/plugin_globals.h"
+#include "native_client/src/shared/ppapi_proxy/utility.h"
+#include "ppapi/c/dev/ppb_font_dev.h"
+#include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/c/pp_point.h"
+#include "ppapi/c/pp_rect.h"
+#include "srpcgen/ppb_rpc.h"
+
+namespace ppapi_proxy {
+
+namespace {
+
+const nacl_abi_size_t kPPPointBytes =
+    static_cast<nacl_abi_size_t>(sizeof(struct PP_Point));
+const nacl_abi_size_t kPPRectBytes =
+    static_cast<nacl_abi_size_t>(sizeof(struct PP_Rect));
+const nacl_abi_size_t kPPTextRunBytes =
+    static_cast<nacl_abi_size_t>(sizeof(struct PP_TextRun_Dev));
+const nacl_abi_size_t kPPFontMetricsBytes =
+    static_cast<nacl_abi_size_t>(sizeof(struct PP_FontMetrics_Dev));
+const nacl_abi_size_t kPPFontDescriptionBytes =
+    static_cast<nacl_abi_size_t>(sizeof(struct PP_FontDescription_Dev));
+const int32_t kInvalidOffset = -1;
+
+PP_Var GetFontFamilies(PP_Instance instance) {
+  DebugPrintf("PPB_Font::GetFontFamilies: instance=%"NACL_PRIu32"\n",
+              instance);
+  NaClSrpcChannel* channel = GetMainSrpcChannel();
+
+  PP_Var font_families = PP_MakeUndefined();
+  nacl_abi_size_t var_size = kMaxVarSize;
+  nacl::scoped_array<char> var_bytes(new char[kMaxVarSize]);
+
+  NaClSrpcError srpc_result =
+      PpbFontRpcClient::PPB_Font_GetFontFamilies(
+          channel,
+          instance,
+          &var_size,
+          var_bytes.get());
+
+  DebugPrintf("PPB_Font::GetFontFamilies: %s\n",
+              NaClSrpcErrorString(srpc_result));
+
+  if (srpc_result == NACL_SRPC_RESULT_OK)
+    (void) DeserializeTo(
+        channel, var_bytes.get(), var_size, 1, &font_families);
+  return font_families;
+}
+
+PP_Resource Create(PP_Instance instance,
+                   const struct PP_FontDescription_Dev* description) {
+  DebugPrintf("PPB_Font::Create: instance=%"NACL_PRIu32"\n", instance);
+
+  nacl_abi_size_t face_size = kMaxVarSize;
+  nacl::scoped_array<char> face_bytes(
+      Serialize(&description->face, 1, &face_size));
+
+  PP_Resource resource = kInvalidResourceId;
+  NaClSrpcError srpc_result =
+      PpbFontRpcClient::PPB_Font_Create(
+          GetMainSrpcChannel(),
+          instance,
+          kPPFontDescriptionBytes,
+          reinterpret_cast<char*>(
+              const_cast<struct PP_FontDescription_Dev*>(description)),
+          face_size,
+          face_bytes.get(),
+          &resource);
+
+  DebugPrintf("PPB_Font::Create: %s\n", NaClSrpcErrorString(srpc_result));
+  if (srpc_result == NACL_SRPC_RESULT_OK) {
+    scoped_refptr<PluginFont> font =
+        PluginResource::AdoptAs<PluginFont>(resource);
+    if (font.get())
+      return resource;
+  }
+  return kInvalidResourceId;
+}
+
+PP_Bool IsFont(PP_Resource resource) {
+  DebugPrintf("PPB_Font::IsFont: resource=%"NACL_PRIu32"\n", resource);
+
+  int32_t is_font = 0;
+  NaClSrpcError srpc_result =
+      PpbFontRpcClient::PPB_Font_IsFont(GetMainSrpcChannel(),
+                                        resource,
+                                        &is_font);
+
+  DebugPrintf("PPB_Font::IsFont: %s\n", NaClSrpcErrorString(srpc_result));
+  if (srpc_result == NACL_SRPC_RESULT_OK && is_font)
+    return PP_TRUE;
+  return PP_FALSE;
+}
+
+PP_Bool Describe(PP_Resource font,
+                 struct PP_FontDescription_Dev* description,
+                 struct PP_FontMetrics_Dev* metrics) {
+  DebugPrintf("PPB_Font::Describe: font=%"NACL_PRIu32"\n", font);
+  NaClSrpcChannel* channel = GetMainSrpcChannel();
+
+  int32_t success = 0;
+  nacl_abi_size_t description_size = kPPFontDescriptionBytes;
+  nacl_abi_size_t face_size = kMaxVarSize;
+  nacl::scoped_array<char> face_bytes(new char[kMaxVarSize]);
+  nacl_abi_size_t metrics_size = kPPFontMetricsBytes;
+  NaClSrpcError srpc_result =
+      PpbFontRpcClient::PPB_Font_Describe(
+          channel,
+          font,
+          &description_size,
+          reinterpret_cast<char*>(description),
+          &face_size,
+          face_bytes.get(),
+          &metrics_size,
+          reinterpret_cast<char*>(metrics),
+          &success);
+
+  DebugPrintf("PPB_Font::Describe: %s\n", NaClSrpcErrorString(srpc_result));
+
+  description->face = PP_MakeUndefined();
+  if (srpc_result == NACL_SRPC_RESULT_OK && success) {
+    (void) DeserializeTo(
+        channel, face_bytes.get(), face_size, 1, &description->face);
+    return PP_TRUE;
+  }
+  return PP_FALSE;
+}
+
+PP_Bool DrawTextAt(PP_Resource font,
+                   PP_Resource image_data,
+                   const struct PP_TextRun_Dev* text_run,
+                   const struct PP_Point* position,
+                   uint32_t color,
+                   const struct PP_Rect* clip,
+                   PP_Bool image_data_is_opaque) {
+  DebugPrintf("PPB_Font::DrawTextAt: font=%"NACL_PRIu32"\n", font);
+
+  nacl_abi_size_t text_size = kMaxVarSize;
+  nacl::scoped_array<char> text_bytes(
+      Serialize(&text_run->text, 1, &text_size));
+
+  int32_t success = 0;
+  NaClSrpcError srpc_result =
+      PpbFontRpcClient::PPB_Font_DrawTextAt(
+          GetMainSrpcChannel(),
+          font,
+          image_data,
+          kPPTextRunBytes,
+          reinterpret_cast<char*>(
+              const_cast<struct PP_TextRun_Dev*>(text_run)),
+          text_size,
+          text_bytes.get(),
+          kPPPointBytes,
+          reinterpret_cast<char*>(const_cast<struct PP_Point*>(position)),
+          color,
+          kPPRectBytes,
+          reinterpret_cast<char*>(const_cast<struct PP_Rect*>(clip)),
+          image_data_is_opaque,
+          &success);
+
+  DebugPrintf("PPB_Font::DrawTextAt: %s\n", NaClSrpcErrorString(srpc_result));
+  if (srpc_result == NACL_SRPC_RESULT_OK && success)
+    return PP_TRUE;
+  return PP_FALSE;
+}
+
+int32_t MeasureText(PP_Resource font,
+                    const struct PP_TextRun_Dev* text_run) {
+  DebugPrintf("PPB_Font::MeasureText: font=%"NACL_PRIu32"\n", font);
+
+  nacl_abi_size_t text_size = kMaxVarSize;
+  nacl::scoped_array<char> text_bytes(
+      Serialize(&text_run->text, 1, &text_size));
+  int32_t width = 0;
+  NaClSrpcError srpc_result =
+      PpbFontRpcClient::PPB_Font_MeasureText(
+          GetMainSrpcChannel(),
+          font,
+          kPPTextRunBytes,
+          reinterpret_cast<char*>(
+              const_cast<struct PP_TextRun_Dev*>(text_run)),
+          text_size,
+          text_bytes.get(),
+          &width);
+
+  DebugPrintf("PPB_Font::MeasureText: %s\n", NaClSrpcErrorString(srpc_result));
+  return width;
+}
+
+uint32_t CharacterOffsetForPixel(PP_Resource font,
+                                 const struct PP_TextRun_Dev* text_run,
+                                 int32_t pixel_position) {
+  DebugPrintf("PPB_Font::CharacterOffsetForPixel: font=%"NACL_PRIu32"\n", font);
+
+  nacl_abi_size_t text_size = kMaxVarSize;
+  nacl::scoped_array<char> text_bytes(
+      Serialize(&text_run->text, 1, &text_size));
+  int32_t offset = kInvalidOffset;
+  NaClSrpcError srpc_result =
+      PpbFontRpcClient::PPB_Font_CharacterOffsetForPixel(
+          GetMainSrpcChannel(),
+          font,
+          kPPTextRunBytes,
+          reinterpret_cast<char*>(
+              const_cast<struct PP_TextRun_Dev*>(text_run)),
+          text_size,
+          text_bytes.get(),
+          pixel_position,
+          &offset);
+
+  DebugPrintf("PPB_Font::CharacterOffsetForPixel: %s\n",
+              NaClSrpcErrorString(srpc_result));
+  return offset;
+}
+
+int32_t PixelOffsetForCharacter(PP_Resource font,
+                                const struct PP_TextRun_Dev* text_run,
+                                uint32_t char_offset) {
+  DebugPrintf("PPB_Font::PixelOffsetForCharacter: font=%"NACL_PRIu32"\n", font);
+
+  nacl_abi_size_t text_size = kMaxVarSize;
+  nacl::scoped_array<char> text_bytes(
+      Serialize(&text_run->text, 1, &text_size));
+  int32_t offset = kInvalidOffset;
+  NaClSrpcError srpc_result =
+      PpbFontRpcClient::PPB_Font_PixelOffsetForCharacter(
+          GetMainSrpcChannel(),
+          font,
+          kPPTextRunBytes,
+          reinterpret_cast<char*>(
+              const_cast<struct PP_TextRun_Dev*>(text_run)),
+          text_size,
+          text_bytes.get(),
+          char_offset,
+          &offset);
+
+  DebugPrintf("PPB_Font::PixelOffsetForCharacter: %s\n",
+              NaClSrpcErrorString(srpc_result));
+  return offset;
+}
+
+}  // namespace
+
+const PPB_Font_Dev* PluginFont::GetInterface() {
+  static const PPB_Font_Dev font_interface = {
+    GetFontFamilies,
+    Create,
+    IsFont,
+    Describe,
+    DrawTextAt,
+    MeasureText,
+    CharacterOffsetForPixel,
+    PixelOffsetForCharacter
+  };
+  return &font_interface;
+}
+
+}  // namespace ppapi_proxy
+