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// Copyright (c) 2012 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/tabs/tab_resources.h"
#include "base/logging.h"
#include "ui/gfx/path.h"
namespace {
// Hit mask constants.
const SkScalar kTabCapWidth = 15;
const SkScalar kTabTopCurveWidth = 4;
const SkScalar kTabBottomCurveWidth = 3;
#if defined(TOOLKIT_VIEWS)
// Windows and Ash have shadows in the left, right and top parts of the tab.
const SkScalar kTabInset = 6;
const SkScalar kTabTop = 2;
#else
// Linux GTK and Mac don't have the shadows.
const SkScalar kTabInset = 0;
const SkScalar kTabTop = 0;
#endif
} // namespace
// static
void TabResources::GetHitTestMask(int width,
int height,
bool include_top_shadow,
gfx::Path* path) {
DCHECK(path);
SkScalar left = kTabInset;
SkScalar top = kTabTop;
SkScalar right = SkIntToScalar(width) - kTabInset;
SkScalar bottom = SkIntToScalar(height);
// Start in the lower-left corner.
path->moveTo(left, bottom);
// Left end cap.
path->lineTo(left + kTabBottomCurveWidth, bottom - kTabBottomCurveWidth);
path->lineTo(left + kTabCapWidth - kTabTopCurveWidth,
top + kTabTopCurveWidth);
path->lineTo(left + kTabCapWidth, top);
// Extend over the top shadow area if we have one and the caller wants it.
if (kTabTop > 0 && include_top_shadow) {
path->lineTo(left + kTabCapWidth, 0);
path->lineTo(right - kTabCapWidth, 0);
}
// Connect to the right cap.
path->lineTo(right - kTabCapWidth, top);
// Right end cap.
path->lineTo(right - kTabCapWidth + kTabTopCurveWidth,
top + kTabTopCurveWidth);
path->lineTo(right - kTabBottomCurveWidth, bottom - kTabBottomCurveWidth);
path->lineTo(right, bottom);
// Close out the path.
path->lineTo(left, bottom);
path->close();
}
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