From 8549ab48a5f8b613ea35dfd64f925fd0438efd0d Mon Sep 17 00:00:00 2001 From: Henrique Nakashima Date: Thu, 19 Apr 2018 21:33:53 +0000 Subject: Fix caret moving to start of edit on click after the text. It now moves to the end of the edit text instead. In a multiline edit, clicking after the end of a line in the middle of the text moves the caret to the beginning of the next line. This is a known issue to be addressed later. Bug: chromium:832293 Change-Id: I55ca1f7eebf935fbb7d9526f115489bdfbd8ba1c Reviewed-on: https://pdfium-review.googlesource.com/31012 Reviewed-by: dsinclair Commit-Queue: Henrique Nakashima --- xfa/fde/cfde_texteditengine.cpp | 18 ++++++++++++++++-- xfa/fde/cfde_texteditengine_unittest.cpp | 12 ++++++++++++ 2 files changed, 28 insertions(+), 2 deletions(-) (limited to 'xfa/fde') diff --git a/xfa/fde/cfde_texteditengine.cpp b/xfa/fde/cfde_texteditengine.cpp index 39396ad00d..ac66fd7f99 100644 --- a/xfa/fde/cfde_texteditengine.cpp +++ b/xfa/fde/cfde_texteditengine.cpp @@ -899,12 +899,19 @@ size_t CFDE_TextEditEngine::GetIndexForPoint(const CFX_PointF& point) { size_t start_it_idx = start_it->nStart; for (; start_it <= end_it; ++start_it) { - if (!start_it->rtPiece.Contains(point)) + // We need to handle clicking off the end of the line. Using Contains() + // would constrain the detection to the text on the line. + bool piece_contains_point_vertically = + (point.y >= start_it->rtPiece.top && + point.y < start_it->rtPiece.bottom()); + if (!piece_contains_point_vertically) continue; std::vector rects = GetCharRects(*start_it); for (size_t i = 0; i < rects.size(); ++i) { - if (!rects[i].Contains(point)) + bool character_contains_point_horizontally = + (point.x >= rects[i].left && point.x < rects[i].right()); + if (!character_contains_point_horizontally) continue; size_t pos = start_it->nStart + i; if (pos >= text_length_) @@ -920,6 +927,13 @@ size_t CFDE_TextEditEngine::GetIndexForPoint(const CFX_PointF& point) { // TODO(dsinclair): Old code had a before flag set based on bidi? return pos; } + + // Point is not within the horizontal range of any characters, it's + // afterwards. Return the position after the the last character. + // The last line has nCount equal to the number of characters + 1 (sentinel + // character maybe?). Restrict to the text_length_ to account for that. + return std::min(static_cast(start_it->nStart + start_it->nCount), + text_length_); } if (start_it == text_piece_info_.end()) diff --git a/xfa/fde/cfde_texteditengine_unittest.cpp b/xfa/fde/cfde_texteditengine_unittest.cpp index 522e61a011..e279f8eb34 100644 --- a/xfa/fde/cfde_texteditengine_unittest.cpp +++ b/xfa/fde/cfde_texteditengine_unittest.cpp @@ -415,6 +415,18 @@ TEST_F(CFDE_TextEditEngineTest, GetIndexForPoint) { engine()->Insert(0, L"Hello World"); EXPECT_EQ(0U, engine()->GetIndexForPoint({0.0f, 0.0f})); EXPECT_EQ(11U, engine()->GetIndexForPoint({999999.0f, 9999999.0f})); + EXPECT_EQ(11U, engine()->GetIndexForPoint({999999.0f, 0.0f})); + EXPECT_EQ(1U, engine()->GetIndexForPoint({10.0f, 5.0f})); +} + +TEST_F(CFDE_TextEditEngineTest, GetIndexForPointMultiline) { + engine()->SetFontSize(10.0f); + engine()->Insert(0, + L"A text long enough to span multiple lines and test " + L"getting indexes on multi-line edits."); + EXPECT_EQ(0U, engine()->GetIndexForPoint({0.0f, 0.0f})); + EXPECT_EQ(87U, engine()->GetIndexForPoint({999999.0f, 9999999.0f})); + EXPECT_EQ(12U, engine()->GetIndexForPoint({999999.0f, 0.0f})); EXPECT_EQ(1U, engine()->GetIndexForPoint({10.0f, 5.0f})); } -- cgit v1.2.3