Aegisub/aegisub/src/scintilla_text_ctrl.cpp

124 lines
4.1 KiB
C++

// Copyright (c) 2007, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
//
// $Id$
/// @file scintilla_text_ctrl.cpp
/// @brief Customised version of wxStyledTextControl used for main edit box
/// @ingroup custom_control
///
#include "config.h"
#include "scintilla_text_ctrl.h"
#include "utils.h"
ScintillaTextCtrl::ScintillaTextCtrl(wxWindow* parent, wxWindowID id, const wxString& value, const wxPoint& pos, const wxSize& size, long style)
: wxStyledTextCtrl(parent, id, pos, size, style, value)
{
Bind(wxEVT_MOUSEWHEEL, &ScintillaTextCtrl::OnMouseWheel, this);
}
/// @brief Get unicode-compatible position
int ScintillaTextCtrl::GetUnicodePosition(int pos) {
return GetText().Left(pos).utf8_str().length();
}
/// @brief Reverse unicode-compatible position
int ScintillaTextCtrl::GetReverseUnicodePosition(int pos) {
wxCharBuffer buffer = GetText().utf8_str();
// Limit position to it
if (pos > (signed)buffer.length()) pos = buffer.length();
// Get UTF8 substring
char *buf2 = new char[pos+1];
memcpy(buf2,buffer,pos);
buf2[pos] = 0;
// Convert back and return its length
wxString buf3(buf2,wxConvUTF8);
delete[] buf2;
return buf3.Length();
}
/// @brief Start unicode-safe styling
void ScintillaTextCtrl::StartUnicodeStyling(int start,int mask) {
StartStyling(GetUnicodePosition(start),mask);
// Cache the text for styling as GetText is hideously slow
text = GetText();
}
/// @brief Unicode-safe styling
void ScintillaTextCtrl::SetUnicodeStyling(int start,int length,int style) {
// Get the real length
int len = text.Mid(start, length).utf8_str().length();
// Set styling
SetStyling(len,style);
}
/// @brief Get boundaries of word at position
void ScintillaTextCtrl::GetBoundsOfWordAtPosition(int pos,int &start,int &end) {
IntPairVector results;
GetWordBoundaries(GetText(), results);
// Get boundaries
for (size_t i = 0; i < results.size(); i++) {
if (results[i].first <= pos && results[i].second >= pos) {
start = results[i].first;
end = results[i].second;
return;
}
}
// Word not found
start = 0;
end = 0;
}
/// @brief Get word at specified position
wxString ScintillaTextCtrl::GetWordAtPosition(int pos) {
int start,end;
GetBoundsOfWordAtPosition(pos, start, end);
return GetText().Mid(start, end - start);
}
/// @brief Set selection, unicode-aware
void ScintillaTextCtrl::SetSelectionU(int start, int end) {
SetSelection(GetUnicodePosition(start),GetUnicodePosition(end));
}
void ScintillaTextCtrl::OnMouseWheel(wxMouseEvent& evt) {
if (ForwardMouseWheelEvent(this, evt)) {
// Skip the event so that wxSTC's default mouse wheel handler is hit
evt.Skip();
}
}