ui/base/resource/resource_bundle_win.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 #include "ui/base/resource/resource_bundle_win.h"
   6
   7 #include "base/logging.h"
   8 #include "base/path_service.h"
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "ui/base/layout.h"
  11 #include "ui/base/resource/resource_bundle.h"
  12 #include "ui/base/resource/resource_data_dll_win.h"
  13 #include "ui/gfx/win/dpi.h"
  14
  15 namespace ui {
  16
  17 namespace {
  18
  19 HINSTANCE resources_data_dll;
  20
  21 HINSTANCE GetCurrentResourceDLL() {
  22   if (resources_data_dll)
  23     return resources_data_dll;
  24   return GetModuleHandle(NULL);
  25 }
  26
  27 base::FilePath GetResourcesPakFilePath(const std::string& pak_name) {
  28   base::FilePath path;
  29   if (PathService::Get(base::DIR_MODULE, &path))
  30     return path.AppendASCII(pak_name.c_str());
  31
  32   // Return just the name of the pack file.
  33   return base::FilePath(base::ASCIIToUTF16(pak_name));
  34 }
  35
  36 }  // namespace
  37
  38 void ResourceBundle::LoadCommonResources() {
  39   // As a convenience, add the current resource module as a data packs.
  40   data_packs_.push_back(new ResourceDataDLL(GetCurrentResourceDLL()));
  41   // Have high-DPI resources for 140% and 180% scaling on Windows based on
  42   // default scaling for Metro mode. If high-DPI mode is enabled, load resource
  43   // pak closest to the desired scale factor.  The high-DPI resources are
  44   // scaled up from 100% touch.
  45   float scale = gfx::win::GetDeviceScaleFactor();
  46   bool force_touch_resources = false;
  47   switch(ui::GetSupportedScaleFactor(scale)) {
  48     case ui::SCALE_FACTOR_180P:
  49       AddDataPackFromPath(GetResourcesPakFilePath(
  50           "chrome_touch_180_percent.pak"),
  51           SCALE_FACTOR_180P);
  52       force_touch_resources = true;
  53       break;
  54     case ui::SCALE_FACTOR_140P:
  55       AddDataPackFromPath(GetResourcesPakFilePath(
  56           "chrome_touch_140_percent.pak"),
  57           SCALE_FACTOR_140P);
  58       force_touch_resources = true;
  59   }
  60   // TODO(kevers|girard): Remove loading of 1x resources when in high-DPI
  61   // mode once all resources are available at 140% and 180%.
  62   if (ui::GetDisplayLayout() == ui::LAYOUT_TOUCH || force_touch_resources) {
  63     AddDataPackFromPath(
  64         GetResourcesPakFilePath("chrome_touch_100_percent.pak"),
  65         SCALE_FACTOR_100P);
  66   } else {
  67     AddDataPackFromPath(
  68         GetResourcesPakFilePath("chrome_100_percent.pak"),
  69         SCALE_FACTOR_100P);
  70   }
  71 }
  72
  73 gfx::Image& ResourceBundle::GetNativeImageNamed(int resource_id, ImageRTL rtl) {
  74   // Flipped image is not used on Windows.
  75   DCHECK_EQ(rtl, RTL_DISABLED);
  76
  77   // Windows only uses SkBitmap for gfx::Image, so this is the same as
  78   // GetImageNamed.
  79   return GetImageNamed(resource_id);
  80 }
  81
  82 void SetResourcesDataDLL(HINSTANCE handle) {
  83   resources_data_dll = handle;
  84 }
  85
  86 HICON LoadThemeIconFromResourcesDataDLL(int icon_id) {
  87   return ::LoadIcon(GetCurrentResourceDLL(), MAKEINTRESOURCE(icon_id));
  88 }
  89
  90 }  // namespace ui;