widget/WidgetUtils.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: sw=2 ts=8 et :
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   6  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "mozilla/WidgetUtils.h"
   9 #include "mozilla/dom/ContentParent.h"
  10 #include "mozilla/Services.h"
  11 #include "mozilla/Unused.h"
  12 #include "nsContentUtils.h"
  13 #include "nsIBidiKeyboard.h"
  14 #include "nsIStringBundle.h"
  15 #include "nsTArray.h"
  16 #ifdef XP_WIN
  17 #  include "WinUtils.h"
  18 #endif
  19 #ifdef MOZ_WIDGET_GTK
  20 #  include "mozilla/WidgetUtilsGtk.h"
  21 #endif
  22
  23 namespace mozilla {
  24
  25 gfx::Matrix ComputeTransformForRotation(const nsIntRect& aBounds,
  26                                         ScreenRotation aRotation) {
  27   gfx::Matrix transform;
  28   static const gfx::Float floatPi = static_cast<gfx::Float>(M_PI);
  29
  30   switch (aRotation) {
  31     case ROTATION_0:
  32       break;
  33     case ROTATION_90:
  34       transform.PreTranslate(aBounds.Width(), 0);
  35       transform.PreRotate(floatPi / 2);
  36       break;
  37     case ROTATION_180:
  38       transform.PreTranslate(aBounds.Width(), aBounds.Height());
  39       transform.PreRotate(floatPi);
  40       break;
  41     case ROTATION_270:
  42       transform.PreTranslate(0, aBounds.Height());
  43       transform.PreRotate(floatPi * 3 / 2);
  44       break;
  45     default:
  46       MOZ_CRASH("Unknown rotation");
  47   }
  48   return transform;
  49 }
  50
  51 gfx::Matrix ComputeTransformForUnRotation(const nsIntRect& aBounds,
  52                                           ScreenRotation aRotation) {
  53   gfx::Matrix transform;
  54   static const gfx::Float floatPi = static_cast<gfx::Float>(M_PI);
  55
  56   switch (aRotation) {
  57     case ROTATION_0:
  58       break;
  59     case ROTATION_90:
  60       transform.PreTranslate(0, aBounds.Height());
  61       transform.PreRotate(floatPi * 3 / 2);
  62       break;
  63     case ROTATION_180:
  64       transform.PreTranslate(aBounds.Width(), aBounds.Height());
  65       transform.PreRotate(floatPi);
  66       break;
  67     case ROTATION_270:
  68       transform.PreTranslate(aBounds.Width(), 0);
  69       transform.PreRotate(floatPi / 2);
  70       break;
  71     default:
  72       MOZ_CRASH("Unknown rotation");
  73   }
  74   return transform;
  75 }
  76
  77 nsIntRect RotateRect(nsIntRect aRect, const nsIntRect& aBounds,
  78                      ScreenRotation aRotation) {
  79   switch (aRotation) {
  80     case ROTATION_0:
  81       return aRect;
  82     case ROTATION_90:
  83       return nsIntRect(aRect.Y(), aBounds.Width() - aRect.XMost(),
  84                        aRect.Height(), aRect.Width());
  85     case ROTATION_180:
  86       return nsIntRect(aBounds.Width() - aRect.XMost(),
  87                        aBounds.Height() - aRect.YMost(), aRect.Width(),
  88                        aRect.Height());
  89     case ROTATION_270:
  90       return nsIntRect(aBounds.Height() - aRect.YMost(), aRect.X(),
  91                        aRect.Height(), aRect.Width());
  92     default:
  93       MOZ_CRASH("Unknown rotation");
  94   }
  95 }
  96
  97 namespace widget {
  98
  99 uint32_t WidgetUtils::IsTouchDeviceSupportPresent() {
 100 #ifdef XP_WIN
 101   return WinUtils::IsTouchDeviceSupportPresent();
 102 #elif defined(MOZ_WIDGET_GTK)
 103   return WidgetUtilsGTK::IsTouchDeviceSupportPresent();
 104 #else
 105   return 0;
 106 #endif
 107 }
 108
 109 // static
 110 void WidgetUtils::SendBidiKeyboardInfoToContent() {
 111   nsCOMPtr<nsIBidiKeyboard> bidiKeyboard = nsContentUtils::GetBidiKeyboard();
 112   if (!bidiKeyboard) {
 113     return;
 114   }
 115
 116   bool rtl;
 117   if (NS_FAILED(bidiKeyboard->IsLangRTL(&rtl))) {
 118     return;
 119   }
 120   bool bidiKeyboards = false;
 121   bidiKeyboard->GetHaveBidiKeyboards(&bidiKeyboards);
 122
 123   nsTArray<dom::ContentParent*> children;
 124   dom::ContentParent::GetAll(children);
 125   for (uint32_t i = 0; i < children.Length(); i++) {
 126     Unused << children[i]->SendBidiKeyboardNotify(rtl, bidiKeyboards);
 127   }
 128 }
 129
 130 // static
 131 void WidgetUtils::GetBrandShortName(nsAString& aBrandName) {
 132   aBrandName.Truncate();
 133
 134   nsCOMPtr<nsIStringBundleService> bundleService =
 135       mozilla::services::GetStringBundleService();
 136
 137   nsCOMPtr<nsIStringBundle> bundle;
 138   if (bundleService) {
 139     bundleService->CreateBundle("chrome://branding/locale/brand.properties",
 140                                 getter_AddRefs(bundle));
 141   }
 142
 143   if (bundle) {
 144     bundle->GetStringFromName("brandShortName", aBrandName);
 145   }
 146 }
 147
 148 }  // namespace widget
 149 }  // namespace mozilla