/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsRect.h"

#include "mozilla/gfx/Types.h"   // for eSideBottom, etc

#include "mozilla/CheckedInt.h"  // for CheckedInt

#include "nsDeviceContext.h"     // for nsDeviceContext

#include "nsString.h"            // for nsAutoString, etc

#include "nsMargin.h"            // for nsMargin

static_assert(

    (int(eSideTop) == 0) && (int(eSideRight) == 1) && (int(eSideBottom) == 2) &&

        (int(eSideLeft) == 3),

    "The mozilla::Side sequence must match the nsMargin nscoord sequence");

const mozilla::gfx::IntRect& GetMaxSizedIntRect() {

  static const mozilla::gfx::IntRect r(0, 0, INT32_MAX, INT32_MAX);

  return r;

}

bool nsRect::Overflows() const {

#ifdef NS_COORD_IS_FLOAT

  return false;

#else

  mozilla::CheckedInt<int32_t> xMost = this->x;

  xMost += this->width;

  mozilla::CheckedInt<int32_t> yMost = this->y;

  yMost += this->height;

  return !xMost.isValid() || !yMost.isValid();

#endif

}

#ifdef DEBUG

// Diagnostics

FILE* operator<<(FILE* out, const nsRect& rect) {

  nsAutoString tmp;

  // Output the coordinates in fractional pixels so they're easier to read

  tmp.Append('{');

  tmp.AppendFloat(NSAppUnitsToFloatPixels(

      rect.X(), nsDeviceContext::AppUnitsPerCSSPixel()));

  tmp.AppendLiteral(", ");

  tmp.AppendFloat(NSAppUnitsToFloatPixels(

      rect.Y(), nsDeviceContext::AppUnitsPerCSSPixel()));

  tmp.AppendLiteral(", ");

  tmp.AppendFloat(NSAppUnitsToFloatPixels(

      rect.Width(), nsDeviceContext::AppUnitsPerCSSPixel()));

  tmp.AppendLiteral(", ");

  tmp.AppendFloat(NSAppUnitsToFloatPixels(

      rect.Height(), nsDeviceContext::AppUnitsPerCSSPixel()));

  tmp.Append('}');

  fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);

  return out;

}

#endif  // DEBUG