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Refined the hit-test API some more.

This commit is contained in:
Pietro Gagliardi 2017-02-07 16:21:18 -05:00
parent ac9aefc43a
commit a5dac81855
1 changed files with 9 additions and 1 deletions
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10
ui_attrstr.h
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@ -128,12 +128,20 @@ _UI_ENUM(uiDrawTextLayoutHitTestPosition) {
};
struct uiDrawTextLayoutHitTestResult {
// The byte position of the character at the given point.
size_t Pos;
// Line is the line at the given point. If the point is on the space
// after the end of a line, Pos will be Line's end index. In this case,
// the rectangle for that character will actually be on the *next*
// line. This disparity is only relevant for caret positioning when
// using the mouse; in that case, to ensure proper behavior, use
// the Caret fields below. In all other cases (including keyboard
// caret movement), use the actual rectangle for the grapheme
// at Pos (via uiDrawTextLayoutByteRangeToRectangle()).
int Line;
uiDrawTextLayoutHitTestPosition XPosition;
uiDrawTextLayoutHitTestPosition YPosition;
int CaretLine;
double CaretX;
double CaretY;
// CaretWidth is decided by uiDrawCaret().