pdf/pdf.cc

   1 // Copyright (c) 2010 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 "pdf/pdf.h"
   6
   7 #if defined(OS_WIN)
   8 #include <windows.h>
   9 #endif
  10
  11 #include "base/command_line.h"
  12 #include "base/logging.h"
  13 #include "pdf/out_of_process_instance.h"
  14 #include "ppapi/c/ppp.h"
  15 #include "ppapi/cpp/private/internal_module.h"
  16 #include "ppapi/cpp/private/pdf.h"
  17 #include "v8/include/v8.h"
  18
  19 bool g_sdk_initialized_via_pepper = false;
  20
  21 namespace chrome_pdf {
  22
  23 PDFModule::PDFModule() {
  24 }
  25
  26 PDFModule::~PDFModule() {
  27   if (g_sdk_initialized_via_pepper) {
  28     chrome_pdf::ShutdownSDK();
  29     g_sdk_initialized_via_pepper = false;
  30   }
  31 }
  32
  33 bool PDFModule::Init() {
  34   return true;
  35 }
  36
  37 pp::Instance* PDFModule::CreateInstance(PP_Instance instance) {
  38   if (!g_sdk_initialized_via_pepper) {
  39     v8::StartupData natives;
  40     v8::StartupData snapshot;
  41     pp::PDF::GetV8ExternalSnapshotData(pp::InstanceHandle(instance),
  42                                        &natives.data, &natives.raw_size,
  43                                        &snapshot.data, &snapshot.raw_size);
  44     if (natives.data) {
  45       v8::V8::SetNativesDataBlob(&natives);
  46       v8::V8::SetSnapshotDataBlob(&snapshot);
  47     }
  48     if (!chrome_pdf::InitializeSDK())
  49       return NULL;
  50     g_sdk_initialized_via_pepper = true;
  51   }
  52
  53   return new OutOfProcessInstance(instance);
  54 }
  55
  56
  57 // Implementation of Global PPP functions ---------------------------------
  58 int32_t PPP_InitializeModule(PP_Module module_id,
  59                              PPB_GetInterface get_browser_interface) {
  60   PDFModule* module = new PDFModule();
  61   if (!module->InternalInit(module_id, get_browser_interface)) {
  62     delete module;
  63     return PP_ERROR_FAILED;
  64   }
  65
  66   pp::InternalSetModuleSingleton(module);
  67   return PP_OK;
  68 }
  69
  70 void PPP_ShutdownModule() {
  71   delete pp::Module::Get();
  72   pp::InternalSetModuleSingleton(NULL);
  73 }
  74
  75 const void* PPP_GetInterface(const char* interface_name) {
  76   if (!pp::Module::Get())
  77     return NULL;
  78   return pp::Module::Get()->GetPluginInterface(interface_name);
  79 }
  80
  81 #if defined(OS_WIN)
  82 bool RenderPDFPageToDC(const void* pdf_buffer,
  83                                  int buffer_size,
  84                                  int page_number,
  85                                  HDC dc,
  86                                  int dpi,
  87                                  int bounds_origin_x,
  88                                  int bounds_origin_y,
  89                                  int bounds_width,
  90                                  int bounds_height,
  91                                  bool fit_to_bounds,
  92                                  bool stretch_to_bounds,
  93                                  bool keep_aspect_ratio,
  94                                  bool center_in_bounds,
  95                                  bool autorotate) {
  96   if (!g_sdk_initialized_via_pepper) {
  97     if (!chrome_pdf::InitializeSDK()) {
  98       return false;
  99     }
 100   }
 101   scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
 102       chrome_pdf::PDFEngineExports::Create());
 103   chrome_pdf::PDFEngineExports::RenderingSettings settings(
 104       dpi, dpi, pp::Rect(bounds_origin_x, bounds_origin_y, bounds_width,
 105                          bounds_height),
 106       fit_to_bounds, stretch_to_bounds, keep_aspect_ratio, center_in_bounds,
 107       autorotate);
 108   bool ret = engine_exports->RenderPDFPageToDC(pdf_buffer, buffer_size,
 109                                                page_number, settings, dc);
 110   if (!g_sdk_initialized_via_pepper) {
 111     chrome_pdf::ShutdownSDK();
 112   }
 113   return ret;
 114 }
 115
 116 #endif  // OS_WIN
 117
 118 bool GetPDFDocInfo(const void* pdf_buffer,
 119                    int buffer_size, int* page_count,
 120                    double* max_page_width) {
 121   if (!g_sdk_initialized_via_pepper) {
 122     if (!chrome_pdf::InitializeSDK())
 123       return false;
 124   }
 125   scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
 126       chrome_pdf::PDFEngineExports::Create());
 127   bool ret = engine_exports->GetPDFDocInfo(
 128       pdf_buffer, buffer_size, page_count, max_page_width);
 129   if (!g_sdk_initialized_via_pepper) {
 130     chrome_pdf::ShutdownSDK();
 131   }
 132   return ret;
 133 }
 134
 135 bool GetPDFPageSizeByIndex(const void* pdf_buffer,
 136                            int pdf_buffer_size, int page_number,
 137                            double* width, double* height) {
 138   if (!g_sdk_initialized_via_pepper) {
 139     if (!chrome_pdf::InitializeSDK())
 140       return false;
 141   }
 142   scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
 143       chrome_pdf::PDFEngineExports::Create());
 144   bool ret = engine_exports->GetPDFPageSizeByIndex(
 145       pdf_buffer, pdf_buffer_size, page_number, width, height);
 146   if (!g_sdk_initialized_via_pepper)
 147     chrome_pdf::ShutdownSDK();
 148   return ret;
 149 }
 150
 151 bool RenderPDFPageToBitmap(const void* pdf_buffer,
 152                            int pdf_buffer_size,
 153                            int page_number,
 154                            void* bitmap_buffer,
 155                            int bitmap_width,
 156                            int bitmap_height,
 157                            int dpi,
 158                            bool autorotate) {
 159   if (!g_sdk_initialized_via_pepper) {
 160     if (!chrome_pdf::InitializeSDK())
 161       return false;
 162   }
 163   scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports(
 164       chrome_pdf::PDFEngineExports::Create());
 165   chrome_pdf::PDFEngineExports::RenderingSettings settings(
 166       dpi, dpi, pp::Rect(bitmap_width, bitmap_height), true, false, true, true,
 167       autorotate);
 168   bool ret = engine_exports->RenderPDFPageToBitmap(
 169       pdf_buffer, pdf_buffer_size, page_number, settings, bitmap_buffer);
 170   if (!g_sdk_initialized_via_pepper) {
 171     chrome_pdf::ShutdownSDK();
 172   }
 173   return ret;
 174 }
 175
 176 }  // namespace chrome_pdf