Bookmark STAR bubble

chrome/browser/cocoa/bookmark_bubble_view.mm

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "chrome/browser/cocoa/bookmark_bubble_view.h"
+#import "third_party/GTM/AppKit/GTMTheme.h"
+
+namespace {
+// TODO(jrg): confirm constants with UI dudes
+const CGFloat kBubbleCornerRadius = 8.0;
+const CGFloat kBubbleArrowXOffset = 10.0;
+const CGFloat kBubbleArrowWidth = 15.0;
+const CGFloat kBubbleArrowHeight = 8.0;
+const CGFloat kBubbleBorderLineWidth = 1.0;
+}
+
+@implementation BookmarkBubbleView
+
+- (void)drawRect:(NSRect)rect {
+  // Make room for the border to be seen.
+  NSRect bounds = [self bounds];
+  bounds.size.height -= kBubbleArrowHeight;
+  bounds = NSInsetRect(bounds,
+                       kBubbleBorderLineWidth/2.0,
+                       kBubbleBorderLineWidth/2.0);
+
+  NSBezierPath* bezier = [NSBezierPath bezierPath];
+  rect.size.height -= kBubbleArrowHeight;
+
+  // Start with a rounded rectangle.
+  [bezier appendBezierPathWithRoundedRect:bounds
+                                  xRadius:kBubbleCornerRadius
+                                  yRadius:kBubbleCornerRadius];
+
+  // Add the bubble arrow (pointed at the star).
+  NSPoint arrowStart = NSMakePoint(NSMinX(bounds), NSMaxY(bounds));
+  arrowStart.x += kBubbleArrowXOffset;
+  [bezier moveToPoint:NSMakePoint(arrowStart.x, arrowStart.y)];
+  [bezier lineToPoint:NSMakePoint(arrowStart.x + kBubbleArrowWidth/2.0,
+                                  arrowStart.y + kBubbleArrowHeight)];
+  [bezier lineToPoint:NSMakePoint(arrowStart.x + kBubbleArrowWidth,
+                                  arrowStart.y)];
+  [bezier closePath];
+
+  // Draw the outline...
+  [[NSColor blackColor] set];
+  [bezier setLineWidth:kBubbleBorderLineWidth];
+  [bezier stroke];
+
+  // Then fill the inside.
+  GTMTheme *theme = [GTMTheme defaultTheme];
+  NSGradient *gradient = [theme gradientForStyle:GTMThemeStyleToolBar
+                                           state:NO];
+  [gradient drawInBezierPath:bezier angle:0.0];
+}
+
+@end
+