// 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/chromeos/frame/browser_frame_view_chromeos.h"

#include "chrome/browser/ui/views/frame/browser_view.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
#include "views/window/hit_test.h"
#include "views/window/window.h"
#include "ui/base/theme_provider.h"

namespace {
// Additional pixels of pad above the tabs.
const int kTopPad = 4;
// To align theme bitmaps correctly we return this offset.
const int kThemeOffset = -5;
}

namespace chromeos {

// BrowserFrameViewChromeos adds a few pixels of pad to the top of the tabstrip.
// To enable this we have to grab mouse events in that area and forward them on
// to the NonClientView. We do this by overriding HitTest(), NonClientHitTest()
// and GetEventHandlerForPoint().
BrowserFrameViewChromeos::BrowserFrameViewChromeos(
    BrowserFrame* frame, BrowserView* browser_view)
    : OpaqueBrowserFrameView(frame, browser_view) {
}

BrowserFrameViewChromeos::~BrowserFrameViewChromeos() {
}

int BrowserFrameViewChromeos::NonClientHitTest(const gfx::Point& point) {
  if (point.y() < kTopPad)
    return HTNOWHERE;
  return OpaqueBrowserFrameView::NonClientHitTest(point);
}

bool BrowserFrameViewChromeos::HitTest(const gfx::Point& l) const {
  if (l.y() < kTopPad)
    return true;
  return OpaqueBrowserFrameView::HitTest(l);
}

views::View* BrowserFrameViewChromeos::GetEventHandlerForPoint(
    const gfx::Point& point) {
  if (point.y() < kTopPad) {
    gfx::Point nc_point(point.x(), kTopPad);
    views::NonClientView* nc_view = frame()->GetWindow()->non_client_view();
    View::ConvertPointToView(this, nc_view, &nc_point);
    return nc_view->GetEventHandlerForPoint(nc_point);
  }
  return OpaqueBrowserFrameView::GetEventHandlerForPoint(point);
}

int BrowserFrameViewChromeos::GetHorizontalTabStripVerticalOffset(
    bool restored) const {
  return NonClientTopBorderHeight(restored, true) + kTopPad;
}

void BrowserFrameViewChromeos::ModifyMaximizedFramePainting(
    int* top_offset, SkBitmap** left_corner, SkBitmap** right_corner) {
  *top_offset = kThemeOffset;
  ui::ThemeProvider* tp = GetThemeProvider();
  if (tp->HasCustomImage(IDR_THEME_FRAME))
    return;
  if (browser_view()->IsOffTheRecord()) {
    *left_corner = tp->GetBitmapNamed(IDR_THEME_FRAME_INCOGNITO_LEFT);
    *right_corner = tp->GetBitmapNamed(IDR_THEME_FRAME_INCOGNITO_RIGHT);
  } else {
    *left_corner = tp->GetBitmapNamed(IDR_THEME_FRAME_LEFT);
    *right_corner = tp->GetBitmapNamed(IDR_THEME_FRAME_RIGHT);
  }
}

}  // namespace chromeos