Converted CFX_Matrix::TransformRect() to take in consts

Currently, all three of CFX_Matrix::TransformRect() take in rect values
and modify them in place.

This CL converts them to take in constant values and return the
transformed values instead, and fixes all the call sites.

Bug=pdfium:874

Change-Id: I9c274df3b14e9d88c100ba0530068e06e8fec32b
Reviewed-on: https://pdfium-review.googlesource.com/11550
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Jane Liu <janeliulwq@google.com>

1 files changed, 3 insertions, 6 deletions

diff --git a/fxbarcode/oned/BC_OnedEAN13Writer.cpp b/fxbarcode/oned/BC_OnedEAN13Writer.cpp
index 85f545c602..9149982ebe 100644
--- a/fxbarcode/oned/BC_OnedEAN13Writer.cpp
+++ b/fxbarcode/oned/BC_OnedEAN13Writer.cpp
@@ -168,24 +168,21 @@ bool CBC_OnedEAN13Writer::ShowChars(const CFX_WideStringC& contents,
   CFX_FloatRect rect((float)leftPosition, (float)(m_Height - iTextHeight),
                      (float)(leftPosition + strWidth - 0.5), (float)m_Height);
   matr.Concat(*matrix);
-  matr.TransformRect(rect);
-  FX_RECT re = rect.GetOuterRect();
+  FX_RECT re = matr.TransformRect(rect).GetOuterRect();
   device->FillRect(&re, m_backgroundColor);
   CFX_FloatRect rect1(
       (float)(leftPosition + 47 * multiple), (float)(m_Height - iTextHeight),
       (float)(leftPosition + 47 * multiple + strWidth - 0.5), (float)m_Height);
   CFX_Matrix matr1(m_outputHScale, 0.0, 0.0, 1.0, 0.0, 0.0);
   matr1.Concat(*matrix);
-  matr1.TransformRect(rect1);
-  re = rect1.GetOuterRect();
+  re = matr1.TransformRect(rect1).GetOuterRect();
   device->FillRect(&re, m_backgroundColor);
   int32_t strWidth1 = multiple * 7;
   CFX_Matrix matr2(m_outputHScale, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f);
   CFX_FloatRect rect2(0.0f, (float)(m_Height - iTextHeight),
                       (float)strWidth1 - 0.5f, (float)m_Height);
   matr2.Concat(*matrix);
-  matr2.TransformRect(rect2);
-  re = rect2.GetOuterRect();
+  re = matr2.TransformRect(rect2).GetOuterRect();
   device->FillRect(&re, m_backgroundColor);
 
   float blank = 0.0;