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#include "ui/base/resource/resource_bundle.h"
6
7#import <AppKit/AppKit.h>
8
9#include "base/basictypes.h"
10#include "base/files/file_path.h"
11#include "base/files/file_util.h"
12#include "base/mac/bundle_locations.h"
13#include "base/mac/mac_util.h"
14#include "base/mac/scoped_nsobject.h"
15#include "base/memory/ref_counted_memory.h"
16#include "base/strings/sys_string_conversions.h"
17#include "base/synchronization/lock.h"
18#include "ui/base/resource/resource_handle.h"
19#include "ui/gfx/image/image.h"
20
21namespace ui {
22
23namespace {
24
25base::FilePath GetResourcesPakFilePath(NSString* name, NSString* mac_locale) {
26  NSString *resource_path;
27  // Some of the helper processes need to be able to fetch resources
28  // (chrome_main.cc: SubprocessNeedsResourceBundle()). Fetch the same locale
29  // as the already-running browser instead of using what NSBundle might pick
30  // based on values at helper launch time.
31  if ([mac_locale length]) {
32    resource_path = [base::mac::FrameworkBundle() pathForResource:name
33                                                           ofType:@"pak"
34                                                      inDirectory:@""
35                                                  forLocalization:mac_locale];
36  } else {
37    resource_path = [base::mac::FrameworkBundle() pathForResource:name
38                                                           ofType:@"pak"];
39  }
40
41  if (!resource_path) {
42    // Return just the name of the pack file.
43    return base::FilePath(base::SysNSStringToUTF8(name) + ".pak");
44  }
45
46  return base::FilePath([resource_path fileSystemRepresentation]);
47}
48
49}  // namespace
50
51void ResourceBundle::LoadCommonResources() {
52  AddDataPackFromPath(GetResourcesPakFilePath(@"chrome_100_percent",
53                        nil), SCALE_FACTOR_100P);
54
55  // On Mac we load 1x and 2x resources and we let the UI framework decide
56  // which one to use.
57  if (IsScaleFactorSupported(SCALE_FACTOR_200P)) {
58    AddDataPackFromPath(GetResourcesPakFilePath(@"chrome_200_percent", nil),
59                        SCALE_FACTOR_200P);
60  }
61}
62
63base::FilePath ResourceBundle::GetLocaleFilePath(const std::string& app_locale,
64                                                 bool test_file_exists) {
65  NSString* mac_locale = base::SysUTF8ToNSString(app_locale);
66
67  // Mac OS X uses "_" instead of "-", so swap to get a Mac-style value.
68  mac_locale = [mac_locale stringByReplacingOccurrencesOfString:@"-"
69                                                     withString:@"_"];
70
71  // On disk, the "en_US" resources are just "en" (http://crbug.com/25578).
72  if ([mac_locale isEqual:@"en_US"])
73    mac_locale = @"en";
74
75  base::FilePath locale_file_path =
76      GetResourcesPakFilePath(@"locale", mac_locale);
77
78  if (delegate_) {
79    locale_file_path =
80        delegate_->GetPathForLocalePack(locale_file_path, app_locale);
81  }
82
83  // Don't try to load empty values or values that are not absolute paths.
84  if (locale_file_path.empty() || !locale_file_path.IsAbsolute())
85    return base::FilePath();
86
87  if (test_file_exists && !base::PathExists(locale_file_path))
88    return base::FilePath();
89
90  return locale_file_path;
91}
92
93gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id, ImageRTL rtl) {
94  // Flipped images are not used on Mac.
95  DCHECK_EQ(rtl, RTL_DISABLED);
96
97  // Check to see if the image is already in the cache.
98  {
99    base::AutoLock lock(*images_and_fonts_lock_);
100    if (images_.count(resource_id)) {
101      if (!images_[resource_id].HasRepresentation(gfx::Image::kImageRepCocoa)) {
102        DLOG(WARNING) << "ResourceBundle::GetNativeImageNamed() is returning a"
103          << " cached gfx::Image that isn't backed by an NSImage. The image"
104          << " will be converted, rather than going through the NSImage loader."
105          << " resource_id = " << resource_id;
106      }
107      return images_[resource_id];
108    }
109  }
110
111  gfx::Image image;
112  if (delegate_)
113    image = delegate_->GetNativeImageNamed(resource_id, rtl);
114
115  if (image.IsEmpty()) {
116    base::scoped_nsobject<NSImage> ns_image;
117    for (size_t i = 0; i < data_packs_.size(); ++i) {
118      scoped_refptr<base::RefCountedStaticMemory> data(
119          data_packs_[i]->GetStaticMemory(resource_id));
120      if (!data.get())
121        continue;
122
123      base::scoped_nsobject<NSData> ns_data(
124          [[NSData alloc] initWithBytes:data->front() length:data->size()]);
125      if (!ns_image.get()) {
126        ns_image.reset([[NSImage alloc] initWithData:ns_data]);
127      } else {
128        NSImageRep* image_rep = [NSBitmapImageRep imageRepWithData:ns_data];
129        if (image_rep)
130          [ns_image addRepresentation:image_rep];
131      }
132    }
133
134    if (!ns_image.get()) {
135      LOG(WARNING) << "Unable to load image with id " << resource_id;
136      NOTREACHED();  // Want to assert in debug mode.
137      return GetEmptyImage();
138    }
139
140    image = gfx::Image(ns_image.release());
141  }
142
143  base::AutoLock lock(*images_and_fonts_lock_);
144
145  // Another thread raced the load and has already cached the image.
146  if (images_.count(resource_id))
147    return images_[resource_id];
148
149  images_[resource_id] = image;
150  return images_[resource_id];
151}
152
153}  // namespace ui
154