chrome/browser/ui/views/tabs/tab_strip_layout.h

// Copyright 2015 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.

#ifndef CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_LAYOUT_H_
#define CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_LAYOUT_H_

#include <vector>

#include "ui/gfx/geometry/size.h"

namespace gfx {
class Rect;
}

class TabAnimationState;

struct TabSizeInfo {
  // The width of pinned tabs.
  int pinned_tab_width;

  // The min width of active/inactive tabs.
  int min_active_width;
  int min_inactive_width;

  // The size of a standard tab, which is the max size active or inactive tabs
  // have.
  gfx::Size standard_size;

  // The overlap between adjacent tabs. When positioning tabs the x-coordinate
  // of a tab is calculated as the x-coordinate of the previous tab plus the
  // previous tab's width minus the |tab_overlap|, e.g.
  // next_tab_x = previous_tab.bounds().right() - tab_overlap.
  int tab_overlap;
};

// Calculates and returns the bounds of the tabs. |width| is the available
// width to use for tab layout. This never sizes the tabs smaller then the
// minimum widths in TabSizeInfo, and as a result the calculated bounds may go
// beyond |width|.
std::vector<gfx::Rect> CalculateTabBounds(
    const TabSizeInfo& tab_size_info,
    const std::vector<TabAnimationState>& tabs,
    int width);

std::vector<gfx::Rect> CalculatePinnedTabBounds(
    const TabSizeInfo& tab_size_info,
    const std::vector<TabAnimationState>& pinned_tabs);

#endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_LAYOUT_H_