/** * @file llpreeditor.h * @brief I believe this is used for languages like Japanese that require * an "input method editor" to type Kanji. * @author Open source patch, incorporated by Dave Simmons * * $LicenseInfo:firstyear=2007&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LL_PREEDITOR #define LL_PREEDITOR class LLPreeditor { public: typedef std::vector<S32> segment_lengths_t; typedef std::vector<BOOL> standouts_t; // We don't delete against LLPreeditor, but compilers complain without this... virtual ~LLPreeditor() {}; // Discard any preedit info. on this preeditor. virtual void resetPreedit() = 0; // Update the preedit feedback using specified details. // Existing preedit is discarded and replaced with the new one. (I.e., updatePreedit is not cumulative.) // All arguments are IN. // preedit_count is the number of elements in arrays preedit_list and preedit_standouts. // preedit list is an array of preedit texts (clauses.) // preedit_standouts indicates whether each preedit text should be shown as standout clause. // caret_position is the preedit-local position of text editing caret, in # of llwchar. virtual void updatePreedit(const LLWString &preedit_string, const segment_lengths_t &preedit_segment_lengths, const standouts_t &preedit_standouts, S32 caret_position) = 0; // Turn the specified sub-contents into an active preedit. // Both position and length are IN and count with UTF-32 (llwchar) characters. // This method primarily facilitates reconversion. virtual void markAsPreedit(S32 position, S32 length) = 0; // Get the position and the length of the active preedit in the contents. // Both position and length are OUT and count with UTF-32 (llwchar) characters. // When this preeditor has no active preedit, position receives // the caret position, and length receives 0. virtual void getPreeditRange(S32 *position, S32 *length) const = 0; // Get the position and the length of the current selection in the contents. // Both position and length are OUT and count with UTF-32 (llwchar) characters. // When this preeditor has no selection, position receives // the caret position, and length receives 0. virtual void getSelectionRange(S32 *position, S32 *length) const = 0; // Get the locations where the preedit and related UI elements are displayed. // Locations are relative to the app window and measured in GL coordinate space (before scaling.) // query_position is IN argument, and other three are OUT. virtual BOOL getPreeditLocation(S32 query_position, LLCoordGL *coord, LLRect *bounds, LLRect *control) const = 0; // Get the size (height) of the current font used in this preeditor. virtual S32 getPreeditFontSize() const = 0; // Get the contents of this preeditor as a LLWString. If there is an active preedit, // the returned LLWString contains it. virtual LLWString getPreeditString() const = 0; // Handle a UTF-32 char on this preeditor, i.e., add the character // to the contents. // This is a back door of the method of same name of LLWindowCallback. // called_from_parent should be set to FALSE if calling through LLPreeditor. virtual BOOL handleUnicodeCharHere(llwchar uni_char) = 0; }; #endif