Move RTL related functions from app/l10n_util to base/i18n/rtl

TBR=darin
BUG=none
TEST=none

Review URL: http://codereview.chromium.org/1073005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@42182 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 23 insertions, 6 deletions

diff --git a/app/gfx/canvas.cc b/app/gfx/canvas.cc
index 75f8011..75ec0a1 100644
--- a/app/gfx/canvas.cc
+++ b/app/gfx/canvas.cc
@@ -8,6 +8,7 @@
 
 #include "app/gfx/font.h"
 #include "app/l10n_util.h"
+#include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "gfx/rect.h"
 #include "third_party/skia/include/core/SkShader.h"
@@ -218,7 +219,7 @@ void Canvas::DrawStringInt(const std::wstring& text,
                            const SkColor& color,
                            int x, int y, int w, int h) {
   DrawStringInt(text, font, color, x, y, w, h,
-                l10n_util::DefaultCanvasTextAlignment());
+                gfx::Canvas::DefaultCanvasTextAlignment());
 }
 
 void Canvas::DrawStringInt(const std::wstring& text,
@@ -267,4 +268,11 @@ SkBitmap Canvas::ExtractBitmap() const {
   return result;
 }
 
+// static
+int Canvas::DefaultCanvasTextAlignment() {
+  if (!base::i18n::IsRTL())
+    return gfx::Canvas::TEXT_ALIGN_LEFT;
+  return gfx::Canvas::TEXT_ALIGN_RIGHT;
+}
+
 }  // namespace gfx
diff --git a/app/gfx/canvas.h b/app/gfx/canvas.h
index 79eed9c..ea4fbf3 100644
--- a/app/gfx/canvas.h
+++ b/app/gfx/canvas.h
@@ -211,6 +211,15 @@ class Canvas : public skia::PlatformCanvas {
   static void SizeStringInt(const std::wstring& test, const gfx::Font& font,
                             int *width, int* height, int flags);
 
+  // Returns the default text alignment to be used when drawing text on a
+  // gfx::Canvas based on the directionality of the system locale language. This
+  // function is used by gfx::Canvas::DrawStringInt when the text alignment is
+  // not specified.
+  //
+  // This function returns either gfx::Canvas::TEXT_ALIGN_LEFT or
+  // gfx::Canvas::TEXT_ALIGN_RIGHT.
+  static int DefaultCanvasTextAlignment();
+
  private:
 #if defined(OS_WIN)
   // Draws text with the specified color, font and location. The text is
diff --git a/app/gfx/canvas_win.cc b/app/gfx/canvas_win.cc
index de9d45a..abe722c 100644
--- a/app/gfx/canvas_win.cc
+++ b/app/gfx/canvas_win.cc
@@ -7,7 +7,7 @@
 #include <limits>
 
 #include "app/gfx/font.h"
-#include "app/l10n_util.h"
+#include "base/i18n/rtl.h"
 #include "gfx/rect.h"
 #include "third_party/skia/include/core/SkShader.h"
 
@@ -24,7 +24,7 @@ void DoDrawText(HDC hdc, const std::wstring& text,
   // 1. The current locale is RTL.
   // 2. The string itself has RTL directionality.
   if (flags & DT_RTLREADING) {
-    if (l10n_util::AdjustStringForLocaleDirection(text, &localized_text)) {
+    if (base::i18n::AdjustStringForLocaleDirection(text, &localized_text)) {
       string_ptr = localized_text.c_str();
       string_size = static_cast<int>(localized_text.length());
     }
@@ -42,7 +42,7 @@ int ComputeFormatFlags(int flags, const std::wstring& text) {
   if (!(flags & (gfx::Canvas::TEXT_ALIGN_CENTER |
                  gfx::Canvas::TEXT_ALIGN_RIGHT |
                  gfx::Canvas::TEXT_ALIGN_LEFT))) {
-    flags |= l10n_util::DefaultCanvasTextAlignment();
+    flags |= gfx::Canvas::DefaultCanvasTextAlignment();
   }
 
   // horizontal alignment
@@ -113,8 +113,8 @@ int ComputeFormatFlags(int flags, const std::wstring& text) {
   // using RTL directionality then we respect that and pass DT_RTLREADING to
   // ::DrawText even if the locale is LTR.
   if ((flags & gfx::Canvas::FORCE_RTL_DIRECTIONALITY) ||
-      ((l10n_util::GetTextDirection() == l10n_util::RIGHT_TO_LEFT) &&
-       (f & DT_RIGHT) && l10n_util::StringContainsStrongRTLChars(text))) {
+      (base::i18n::IsRTL() &&
+       (f & DT_RIGHT) && base::i18n::StringContainsStrongRTLChars(text))) {
     f |= DT_RTLREADING;
   }