Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #include "nsRect.h"
       7             : #include "mozilla/gfx/Types.h"          // for eSideBottom, etc
       8             : #include "mozilla/CheckedInt.h"         // for CheckedInt
       9             : #include "nsDeviceContext.h"            // for nsDeviceContext
      10             : #include "nsString.h"               // for nsAutoString, etc
      11             : #include "nsMargin.h"                   // for nsMargin
      12             : 
      13             : static_assert((int(eSideTop) == 0) &&
      14             :               (int(eSideRight) == 1) &&
      15             :               (int(eSideBottom) == 2) &&
      16             :               (int(eSideLeft) == 3),
      17             :               "The mozilla::Side sequence must match the nsMargin nscoord sequence");
      18             : 
      19          43 : const mozilla::gfx::IntRect& GetMaxSizedIntRect() {
      20          43 :   static const mozilla::gfx::IntRect r(0, 0, INT32_MAX, INT32_MAX);
      21          43 :   return r;
      22             : }
      23             : 
      24             : 
      25         780 : bool nsRect::Overflows() const {
      26             : #ifdef NS_COORD_IS_FLOAT
      27             :   return false;
      28             : #else
      29         780 :   mozilla::CheckedInt<int32_t> xMost = this->x;
      30         780 :   xMost += this->width;
      31         780 :   mozilla::CheckedInt<int32_t> yMost = this->y;
      32         780 :   yMost += this->height;
      33         780 :   return !xMost.isValid() || !yMost.isValid();
      34             : #endif
      35             : }
      36             : 
      37             : #ifdef DEBUG
      38             : // Diagnostics
      39             : 
      40           0 : FILE* operator<<(FILE* out, const nsRect& rect)
      41             : {
      42           0 :   nsAutoString tmp;
      43             : 
      44             :   // Output the coordinates in fractional pixels so they're easier to read
      45           0 :   tmp.Append('{');
      46           0 :   tmp.AppendFloat(NSAppUnitsToFloatPixels(rect.x,
      47           0 :                        nsDeviceContext::AppUnitsPerCSSPixel()));
      48           0 :   tmp.AppendLiteral(", ");
      49           0 :   tmp.AppendFloat(NSAppUnitsToFloatPixels(rect.y,
      50           0 :                        nsDeviceContext::AppUnitsPerCSSPixel()));
      51           0 :   tmp.AppendLiteral(", ");
      52           0 :   tmp.AppendFloat(NSAppUnitsToFloatPixels(rect.width,
      53           0 :                        nsDeviceContext::AppUnitsPerCSSPixel()));
      54           0 :   tmp.AppendLiteral(", ");
      55           0 :   tmp.AppendFloat(NSAppUnitsToFloatPixels(rect.height,
      56           0 :                        nsDeviceContext::AppUnitsPerCSSPixel()));
      57           0 :   tmp.Append('}');
      58           0 :   fputs(NS_LossyConvertUTF16toASCII(tmp).get(), out);
      59           0 :   return out;
      60             : }
      61             : 
      62             : #endif // DEBUG