Implement badges for page actions. Also add badge text color API.

chrome/browser/views/browser_actions_container.cc

 // 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.
 
 #include "chrome/browser/views/browser_actions_container.h"
 
 #include "app/gfx/canvas.h"
 #include "app/resource_bundle.h"
 #include "base/stl_util-inl.h"
 #include "base/string_util.h"
@@ skipping 281 matching lines @@
   button_ = new BrowserActionButton(browser_action, extension, panel);
   AddChildView(button_);
 }
 
 void BrowserActionView::Layout() {
   button_->SetBounds(0, kControlVertOffset, width(), kButtonSize);
 }
 
 void BrowserActionView::PaintChildren(gfx::Canvas* canvas) {
   View::PaintChildren(canvas);
-
-  const std::string& text = button_->browser_action_state()->badge_text();
-  if (text.empty())
-    return;
-
-  const int kTextSize = 8;
-  const int kBottomMargin = 5;
-  const int kPadding = 2;
-  const int kBadgeHeight = 11;
-  const int kMaxTextWidth = 23;
-  const int kCenterAlignThreshold = 20;  // at than width, we center align
-
-  canvas->save();
-
-  SkTypeface* typeface = SkTypeface::CreateFromName("Arial", SkTypeface::kBold);
-  SkPaint text_paint;
-  text_paint.setAntiAlias(true);
-  text_paint.setColor(SK_ColorWHITE);
-  text_paint.setFakeBoldText(true);
-  text_paint.setTextAlign(SkPaint::kLeft_Align);
-  text_paint.setTextSize(SkIntToScalar(kTextSize));
-  text_paint.setTypeface(typeface);
-
-  // Calculate text width. We clamp it to a max size.
-  SkScalar text_width = text_paint.measureText(text.c_str(), text.size());
-  text_width = SkIntToScalar(
-      std::min(kMaxTextWidth, SkScalarFloor(text_width)));
-
-  // Cacluate badge size. It is clamped to a min width just because it looks
-  // silly if it is too skinny.
-  int badge_width = SkScalarFloor(text_width) + kPadding * 2;
-  badge_width = std::max(kBadgeHeight, badge_width);
-
-  // Paint the badge background color in the right location. It is usually
-  // right-aligned, but it can also be center-aligned if it is large.
-  SkRect rect;
-  rect.fBottom = SkIntToScalar(height() - kBottomMargin);
-  rect.fTop = rect.fBottom - SkIntToScalar(kBadgeHeight);
-  if (badge_width >= kCenterAlignThreshold) {
-    rect.fLeft = SkIntToScalar((width() - badge_width) / 2);
-    rect.fRight = rect.fLeft + SkIntToScalar(badge_width);
-  } else {
-    rect.fRight = SkIntToScalar(width());
-    rect.fLeft = rect.fRight - badge_width;
-  }
-
-  SkPaint rect_paint;
-  rect_paint.setStyle(SkPaint::kFill_Style);
-  rect_paint.setAntiAlias(true);
-  rect_paint.setColor(
-      button_->browser_action_state()->badge_background_color());
-  canvas->drawRoundRect(rect, SkIntToScalar(2), SkIntToScalar(2), rect_paint);
-
-  // Overlay the gradient. It is stretchy, so we do this in three parts.
-  ResourceBundle& resource_bundle = ResourceBundle::GetSharedInstance();
-  SkBitmap* gradient_left = resource_bundle.GetBitmapNamed(
-      IDR_BROWSER_ACTION_BADGE_LEFT);
-  SkBitmap* gradient_right = resource_bundle.GetBitmapNamed(
-      IDR_BROWSER_ACTION_BADGE_RIGHT);
-  SkBitmap* gradient_center = resource_bundle.GetBitmapNamed(
-      IDR_BROWSER_ACTION_BADGE_CENTER);
-
-  canvas->drawBitmap(*gradient_left, rect.fLeft, rect.fTop);
-  canvas->TileImageInt(*gradient_center,
-      SkScalarFloor(rect.fLeft) + gradient_left->width(),
-      SkScalarFloor(rect.fTop),
-      SkScalarFloor(rect.width()) - gradient_left->width() -
-                    gradient_right->width(),
-      SkScalarFloor(rect.height()));
-  canvas->drawBitmap(*gradient_right,
-      rect.fRight - SkIntToScalar(gradient_right->width()), rect.fTop);
-
-  // Finally, draw the text centered within the badge. We set a clip in case the
-  // text was too large.
-  rect.fLeft += kPadding;
-  rect.fRight -= kPadding;
-  canvas->clipRect(rect);
-  canvas->drawText(text.c_str(), text.size(),
-                   rect.fLeft + (rect.width() - text_width) / 2,
-                   rect.fTop + kTextSize + 1,
-                   text_paint);
-  canvas->restore();
+  button_->browser_action_state()->PaintBadge(canvas,
+                                              gfx::Rect(width(), height()));
 }
 
 
 ////////////////////////////////////////////////////////////////////////////////
 // BrowserActionsContainer
 
 BrowserActionsContainer::BrowserActionsContainer(
     Profile* profile, ToolbarView* toolbar)
     : profile_(profile),
       toolbar_(toolbar),
@@ skipping 183 matching lines @@
       std::min(static_cast<int>(browser_action_views_.size()),
                kMinimumNumberOfVisibleBrowserActions) * kButtonSize;
 
   // Even if available_width is <= 0, we still return at least the |min_width|.
   if (available_width <= 0)
     return min_width;
 
   return std::max(min_width, available_width - available_width % kButtonSize +
                   kHorizontalPadding * 2);
 }