Conditionally draw a bezel below text fields, used for the omnibox.

BUG=49793
TEST=visual inspection. unit tests shouldn't leak or crash on drawing.
Review URL: http://codereview.chromium.org/3042014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@53224 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 39 insertions, 5 deletions

diff --git a/chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm b/chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm
index edb9a64..8acb8ba 100644
--- a/chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm
+++ b/chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm
@@ -148,6 +148,10 @@ size_t CalculatePositionsInFrame(
   return kCornerRadius;
 }
 
+- (BOOL)shouldDrawBezel {
+  return YES;
+}
+
 - (void)clearDecorations {
   leftDecorations_.clear();
   rightDecorations_.clear();
diff --git a/chrome/browser/cocoa/styled_text_field_cell.h b/chrome/browser/cocoa/styled_text_field_cell.h
index 7eb12a8..c89f7d1 100644
--- a/chrome/browser/cocoa/styled_text_field_cell.h
+++ b/chrome/browser/cocoa/styled_text_field_cell.h
@@ -2,6 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#ifndef CHROME_BROWSER_COCOA_STYLED_TEXT_FIELD_CELL_H_
+#define CHROME_BROWSER_COCOA_STYLED_TEXT_FIELD_CELL_H_
+
 #import <Cocoa/Cocoa.h>
 
 // StyledTextFieldCell customizes the look of the standard Cocoa text field.
@@ -13,12 +16,11 @@
 @interface StyledTextFieldCell : NSTextFieldCell {
 }
 
-// Baseline adjust for the text in this cell.  Defaults to 0.  Subclasses should
-// override as needed.
-- (CGFloat)baselineAdjust;
+@end
 
-// Radius of the corners of the field.  Defaults to square corners (0.0).
-- (CGFloat)cornerRadius;
+// Methods intended to be overridden by subclasses, not part of the public API
+// and should not be called outside of subclasses.
+@interface StyledTextFieldCell (ProtectedMethods)
 
 // Return the portion of the cell to show the text cursor over.  The default
 // implementation returns the full |cellFrame|.  Subclasses should override this
@@ -31,4 +33,17 @@
 // Subclasses should override this method if they add any decorations.
 - (NSRect)textFrameForFrame:(NSRect)cellFrame;
 
+// Baseline adjust for the text in this cell.  Defaults to 0.  Subclasses should
+// override as needed.
+- (CGFloat)baselineAdjust;
+
+// Radius of the corners of the field.  Defaults to square corners (0.0).
+- (CGFloat)cornerRadius;
+
+// Returns YES if a light themed bezel should be drawn under the text field.
+// Default implementation returns NO.
+- (BOOL)shouldDrawBezel;
+
 @end
+
+#endif  // CHROME_BROWSER_COCOA_STYLED_TEXT_FIELD_CELL_H_
diff --git a/chrome/browser/cocoa/styled_text_field_cell.mm b/chrome/browser/cocoa/styled_text_field_cell.mm
index 64fc0e4..5289175 100644
--- a/chrome/browser/cocoa/styled_text_field_cell.mm
+++ b/chrome/browser/cocoa/styled_text_field_cell.mm
@@ -85,6 +85,10 @@ private:
   return 0.0;
 }
 
+- (BOOL)shouldDrawBezel {
+  return NO;
+}
+
 // Returns the same value as textCursorFrameForFrame, but does not call it
 // directly to avoid potential infinite loops.
 - (NSRect)textFrameForFrame:(NSRect)cellFrame {
@@ -166,6 +170,17 @@ private:
     FrameRectWithInset(shadowFrame, 0.5, radius - 0.5, 1.0, shadowShade);
   }
 
+  // Draw optional bezel below bottom stroke.
+  if ([self shouldDrawBezel]) {
+    [[NSColor colorWithCalibratedWhite:0.96 alpha:1.0] set];
+    NSRect bezelRect = NSMakeRect(cellFrame.origin.x,
+                                  NSMaxY(cellFrame) - 0.5,
+                                  NSWidth(cellFrame),
+                                  1.0);
+    bezelRect = NSInsetRect(bezelRect, radius - 0.5, 0.0);
+    NSRectFill(bezelRect);
+  }
+
   // Draw the focus ring if needed.
   if ([self showsFirstResponder]) {
     NSColor* color =