virtual bool OnBidirectionalText(const wchar_t* text, UPInt textLen, wchar_t* newText, unsigned* indexMap, bool* mirrorBits);
OnBidirectionalText is a callback that is called on bidirectional text enabled textfields. This method receives original text ('text'/'textLen' parameters) and pre-allocated buffers:
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Parameters |
Description |
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const wchar_t* text |
The original text. |
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UPInt textLen |
Length of the text. |
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wchar_t* newText |
New re-ordered text should be put there, do not overrun the length (the length is the same as 'textLen') |
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unsigned* indexMap |
A buffer for an array of unsigned integers, that should be filled with new indices of each char. For example, if original char at index 0 was relocated to index 10, then indexMap[0] = 10. |
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bool* mirrorBits |
A buffer for an array of bools (length = 'textLen'), where index is an index of char in 'newText' and the value (true/false) indicates necessity of the glyph mirroring (for example, for integral sign). |
Should return 'true' if method was successful and the core should use contents of the buffers; false, if no changes to the textfield should be applied.