Touch constants and dead code removal.

chrome/browser/ui/touch/tabs/touch_tab_strip_controller.cc

-// Copyright (c) 2011 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/ui/touch/tabs/touch_tab_strip_controller.h"
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "chrome/browser/extensions/extension_tab_helper.h"
-#include "chrome/browser/favicon/favicon_tab_helper.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
-#include "chrome/browser/ui/touch/tabs/touch_tab.h"
-#include "chrome/browser/ui/touch/tabs/touch_tab_strip.h"
-#include "chrome/browser/ui/views/tabs/tab_renderer_data.h"
-#include "skia/ext/image_operations.h"
-#include "ui/gfx/codec/png_codec.h"
-#include "ui/gfx/favicon_size.h"
-
-namespace {
-
-void CalcTouchIconTargetSize(int* width, int* height) {
-  if (*width > TouchTab::kTouchTargetIconSize ||
-      *height > TouchTab::kTouchTargetIconSize) {
-    // Too big, resize it maintaining the aspect ratio.
-    float aspect_ratio = static_cast<float>(*width) /
-                         static_cast<float>(*height);
-    *height = TouchTab::kTouchTargetIconSize;
-    *width = static_cast<int>(aspect_ratio * *height);
-    if (*width > TouchTab::kTouchTargetIconSize) {
-      *width = TouchTab::kTouchTargetIconSize;
-      *height = static_cast<int>(*width / aspect_ratio);
-    }
-  }
-}
-
-GURL GetURLWithoutFragment(const GURL& gurl) {
-  url_canon::Replacements<char> replacements;
-  replacements.ClearUsername();
-  replacements.ClearPassword();
-  replacements.ClearQuery();
-  replacements.ClearRef();
-  return gurl.ReplaceComponents(replacements);
-}
-
-}  // namespace
-
-TouchTabStripController::TouchTabStripController(Browser* browser,
-                                                 TabStripModel* model)
-    : BrowserTabStripController(browser, model) {
-}
-
-TouchTabStripController::~TouchTabStripController() {
-}
-
-void TouchTabStripController::TabDetachedAt(TabContentsWrapper* contents,
-                                            int model_index) {
-  if (consumer_.HasPendingRequests()) {
-    TouchTab* touch_tab =
-        static_cast<TouchTab*>(tabstrip()->GetBaseTabAtModelIndex(model_index));
-    consumer_.CancelAllRequestsForClientData(touch_tab);
-  }
-  BrowserTabStripController::TabDetachedAt(contents, model_index);
-}
-
-void TouchTabStripController::TabChangedAt(TabContentsWrapper* contents,
-                                           int model_index,
-                                           TabChangeType change_type) {
-  // Clear the large icon if we are loading a different URL in the same tab.
-  if (change_type == LOADING_ONLY) {
-    TouchTab* touch_tab =
-        static_cast<TouchTab*>(tabstrip()->GetBaseTabAtModelIndex(model_index));
-      if (!touch_tab->touch_icon().isNull()) {
-      GURL existing_tab_url = GetURLWithoutFragment(touch_tab->data().url);
-      GURL page_url = GetURLWithoutFragment(contents->tab_contents()->GetURL());
-      // Reset touch icon if the url are different.
-      if (existing_tab_url != page_url) {
-        touch_tab->set_touch_icon(SkBitmap());
-        consumer_.CancelAllRequestsForClientData(touch_tab);
-      }
-    }
-  }
-
-  // Always call parent's method.
-  BrowserTabStripController::TabChangedAt(contents, model_index, change_type);
-}
-
-void TouchTabStripController::SetTabRendererDataFromModel(
-    TabContents* contents,
-    int model_index,
-    TabRendererData* data,
-    TabStatus tab_status) {
-  // Call parent first.
-  BrowserTabStripController::SetTabRendererDataFromModel(contents, model_index,
-                                                         data, tab_status);
-  if (tab_status == NEW_TAB)
-    return;
-
-  // Use the touch icon if any.
-  TouchTab* touch_tab =
-      static_cast<TouchTab*>(tabstrip()->GetBaseTabAtModelIndex(model_index));
-    if (!touch_tab->touch_icon().isNull()) {
-    data->favicon = touch_tab->touch_icon();
-    return;
-  }
-
-  // In the case where we do not have a touch icon we scale up the small
-  // favicons (16x16) which originally are coming from NavigationEntry.
-  if (data->favicon.width() == gfx::kFaviconSize &&
-      data->favicon.height() == gfx::kFaviconSize) {
-    data->favicon = skia::ImageOperations::Resize(data->favicon,
-        skia::ImageOperations::RESIZE_BEST, TouchTab::kTouchTargetIconSize,
-        TouchTab::kTouchTargetIconSize);
-  }
-
-  // Check if we have an outstanding request for this tab.
-  if (consumer_.HasPendingRequests())
-    consumer_.CancelAllRequestsForClientData(touch_tab);
-
-  // Request touch icon.
-  GURL page_url = GetURLWithoutFragment(contents->GetURL());
-  FaviconService* favicon_service = profile()->GetFaviconService(
-      Profile::EXPLICIT_ACCESS);
-  if (favicon_service) {
-    CancelableRequestProvider::Handle h =
-        favicon_service->GetFaviconForURL(
-            page_url,
-            history::TOUCH_ICON | history::TOUCH_PRECOMPOSED_ICON,
-            &consumer_,
-            base::Bind(&TouchTabStripController::OnTouchIconAvailable,
-                       base::Unretained(this)));
-    consumer_.SetClientData(favicon_service, h, touch_tab);
-  }
-}
-
-const TouchTabStrip* TouchTabStripController::tabstrip() const {
-  return static_cast<const TouchTabStrip*>(
-      BrowserTabStripController::tabstrip());
-}
-
-void TouchTabStripController::OnTouchIconAvailable(
-    FaviconService::Handle h,
-    history::FaviconData favicon) {
-  // Abandon the request when there is no valid favicon.
-  if (!favicon.is_valid())
-    return;
-
-  // Retrieve the model_index from the TouchTab pointer received.
-  TouchTab* touch_tab = consumer_.GetClientDataForCurrentRequest();
-  int model_index = tabstrip()->GetModelIndexOfBaseTab(touch_tab);
-  if (!IsValidIndex(model_index))
-    return;
-
-  // Try to decode the favicon, return on failure.
-  SkBitmap bitmap;
-  gfx::PNGCodec::Decode(favicon.image_data->front(),
-                        favicon.image_data->size(),
-                        &bitmap);
-  if (bitmap.isNull())
-    return;
-
-  // Rescale output, if needed, and assign to the TouchTab instance.
-  int width = bitmap.width();
-  int height = bitmap.height();
-  if (width == TouchTab::kTouchTargetIconSize &&
-      height == TouchTab::kTouchTargetIconSize) {
-    touch_tab->set_touch_icon(bitmap);
-  } else {
-    CalcTouchIconTargetSize(&width, &height);
-    touch_tab->set_touch_icon(skia::ImageOperations::Resize(bitmap,
-        skia::ImageOperations::RESIZE_BEST, width, height));
-  }
-
-  // Refresh UI since favicon changed.
-  browser()->GetTabContentsAt(model_index)->NotifyNavigationStateChanged(
-      TabContents::INVALIDATE_TAB);
-}