Add FPDFText_GetMatrix() API

This is similar to FPDFPath_GetMatrix(), but works on text, not path
objects.

Change-Id: If268362b7fa4398124b953e0e2225074523f5f65
Reviewed-on: https://pdfium-review.googlesource.com/35434
Reviewed-by: dsinclair <dsinclair@chromium.org>
Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/fpdfsdk/fpdf_edit_embeddertest.cpp b/fpdfsdk/fpdf_edit_embeddertest.cpp
index 07879c5054..c78700ea67 100644
--- a/fpdfsdk/fpdf_edit_embeddertest.cpp
+++ b/fpdfsdk/fpdf_edit_embeddertest.cpp
@@ -1122,6 +1122,23 @@ TEST_F(FPDFEditEmbeddertest, AddStandardFontText) {
     CompareBitmap(page_bitmap.get(), 612, 792, md5_3);
   }
 
+  double matrix_a = 0;
+  double matrix_b = 0;
+  double matrix_c = 0;
+  double matrix_d = 0;
+  double matrix_e = 0;
+  double matrix_f = 0;
+  EXPECT_FALSE(FPDFText_GetMatrix(nullptr, &matrix_a, &matrix_b, &matrix_c,
+                                  &matrix_d, &matrix_e, &matrix_f));
+  EXPECT_TRUE(FPDFText_GetMatrix(text_object3, &matrix_a, &matrix_b, &matrix_c,
+                                 &matrix_d, &matrix_e, &matrix_f));
+  EXPECT_EQ(1., matrix_a);
+  EXPECT_EQ(1.5, matrix_b);
+  EXPECT_EQ(2., matrix_c);
+  EXPECT_EQ(0.5, matrix_d);
+  EXPECT_EQ(200., matrix_e);
+  EXPECT_EQ(200., matrix_f);
+
   // TODO(npm): Why are there issues with text rotated by 90 degrees?
   // TODO(npm): FPDF_SaveAsCopy not giving the desired result after this.
   FPDF_ClosePage(page);