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
  26 ComputeTransformForRotation(const nsIntRect& aBounds,
  27                               ScreenRotation aRotation)
  28 {
  29     gfx::Matrix transform;
  30     static const gfx::Float floatPi = static_cast<gfx::Float>(M_PI);
  31
  32     switch (aRotation) {
  33     case ROTATION_0:
  34         break;
  35     case ROTATION_90:
  36         transform.PreTranslate(aBounds.Width(), 0);
  37         transform.PreRotate(floatPi / 2);
  38         break;
  39     case ROTATION_180:
  40         transform.PreTranslate(aBounds.Width(), aBounds.Height());
  41         transform.PreRotate(floatPi);
  42         break;
  43     case ROTATION_270:
  44         transform.PreTranslate(0, aBounds.Height());
  45         transform.PreRotate(floatPi * 3 / 2);
  46         break;
  47     default:
  48         MOZ_CRASH("Unknown rotation");
  49     }
  50     return transform;
  51 }
  52
  53 gfx::Matrix
  54 ComputeTransformForUnRotation(const nsIntRect& aBounds,
  55                               ScreenRotation aRotation)
  56 {
  57     gfx::Matrix transform;
  58     static const gfx::Float floatPi = static_cast<gfx::Float>(M_PI);
  59
  60     switch (aRotation) {
  61     case ROTATION_0:
  62         break;
  63     case ROTATION_90:
  64         transform.PreTranslate(0, aBounds.Height());
  65         transform.PreRotate(floatPi * 3 / 2);
  66         break;
  67     case ROTATION_180:
  68         transform.PreTranslate(aBounds.Width(), aBounds.Height());
  69         transform.PreRotate(floatPi);
  70         break;
  71     case ROTATION_270:
  72         transform.PreTranslate(aBounds.Width(), 0);
  73         transform.PreRotate(floatPi / 2);
  74         break;
  75     default:
  76         MOZ_CRASH("Unknown rotation");
  77     }
  78     return transform;
  79 }
  80
  81 nsIntRect RotateRect(nsIntRect aRect,
  82                      const nsIntRect& aBounds,
  83                      ScreenRotation aRotation)
  84 {
  85   switch (aRotation) {
  86     case ROTATION_0:
  87       return aRect;
  88     case ROTATION_90:
  89       return nsIntRect(aRect.Y(),
  90                        aBounds.Width() - aRect.XMost(),
  91                        aRect.Height(), aRect.Width());
  92     case ROTATION_180:
  93       return nsIntRect(aBounds.Width() - aRect.XMost(),
  94                        aBounds.Height() - aRect.YMost(),
  95                        aRect.Width(), aRect.Height());
  96     case ROTATION_270:
  97       return nsIntRect(aBounds.Height() - aRect.YMost(),
  98                        aRect.X(),
  99                        aRect.Height(), aRect.Width());
 100     default:
 101       MOZ_CRASH("Unknown rotation");
 102   }
 103 }
 104
 105 namespace widget {
 106
 107 uint32_t
 108 WidgetUtils::IsTouchDeviceSupportPresent()
 109 {
 110 #ifdef XP_WIN
 111   return WinUtils::IsTouchDeviceSupportPresent();
 112 #elif defined(MOZ_WIDGET_GTK)
 113   return WidgetUtilsGTK::IsTouchDeviceSupportPresent();
 114 #else
 115   return 0;
 116 #endif
 117 }
 118
 119 // static
 120 void
 121 WidgetUtils::SendBidiKeyboardInfoToContent()
 122 {
 123   nsCOMPtr<nsIBidiKeyboard> bidiKeyboard = nsContentUtils::GetBidiKeyboard();
 124   if (!bidiKeyboard) {
 125     return;
 126   }
 127
 128   bool rtl;
 129   if (NS_FAILED(bidiKeyboard->IsLangRTL(&rtl))) {
 130     return;
 131   }
 132   bool bidiKeyboards = false;
 133   bidiKeyboard->GetHaveBidiKeyboards(&bidiKeyboards);
 134
 135   nsTArray<dom::ContentParent*> children;
 136   dom::ContentParent::GetAll(children);
 137   for (uint32_t i = 0; i < children.Length(); i++) {
 138     Unused << children[i]->SendBidiKeyboardNotify(rtl, bidiKeyboards);
 139   }
 140 }
 141
 142 // static
 143 void
 144 WidgetUtils::GetBrandShortName(nsAString& aBrandName)
 145 {
 146     aBrandName.Truncate();
 147
 148     nsCOMPtr<nsIStringBundleService> bundleService =
 149         mozilla::services::GetStringBundleService();
 150
 151     nsCOMPtr<nsIStringBundle> bundle;
 152     if (bundleService) {
 153         bundleService->CreateBundle(
 154             "chrome://branding/locale/brand.properties",
 155             getter_AddRefs(bundle));
 156     }
 157
 158     if (bundle) {
 159         bundle->GetStringFromName("brandShortName", aBrandName);
 160     }
 161 }
 162
 163 } // namespace widget
 164 } // namespace mozilla