MyGUI自动换行（修正选区）

首先谢谢这位兄台给了一个思路。

http://blog.csdn.net/cparent/article/details/8230304?reload#cpp

但是这个有点问题，选中的区域有问题。

我这里是直接使用他的类似：

[code=C/C++]

<pre class="cpp" name="code">if (FontCodeType::Space == character){roll_back.set(line_info.simbols.size(), index, count, width);}

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的方法来达到换行目的。在

[code=C/C++]

if(_maxWidth != -1&& (width + char_fullAdvance) > _maxWidth)

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这里加上换行标示，就可以了。但是由于这时候长度已经大于了，所以这个标示应该加在当前字符的前面。

找到前一个地点加换行。

现在逻辑是对的，但是选中的索引还有问题。

在MyGUI_EditText.cpp里

 void EditText::doRender()

原来每行都会把索引++。这里注释掉去掉。

MyGUI_TextView.cpp

里把回车加上一个虚的符号。

[code=C/C++]

    line_info.simbols.push_back(CharInfo());

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如下：

[code=C/C++]

void TextView::update(const UString& _text, IFont* _font, int _height, Align _align, VertexColourType _format, int _maxWidth){mFontHeight = _height;// массив для быстрой конвертации цветовstatic const char convert_colour[64] ={0,  1,  2,  3,  4,  5,  6, 7, 8, 9, 0, 0, 0, 0, 0, 0,0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0,0,  0,  0,  0,  0,  0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0};mViewSize.clear();RollBackPoint roll_back;IntSize result;float width = 0.0f;size_t count = 0;mLength = 0;mLineInfo.clear();LineInfo line_info;int font_height = _font->getDefaultHeight();UString::const_iterator end = _text.end();UString::const_iterator index = _text.begin();/*if (index == end)return;*/result.height += _height;for (; index != end; ++index){Char character = *index;// новая строкаif (character == FontCodeType::CR|| character == FontCodeType::NEL|| character == FontCodeType::LF){if (character == FontCodeType::CR){UString::const_iterator peeki = index;++peeki;if ((peeki != end) && (*peeki == FontCodeType::LF))index = peeki; // skip both as one newline}line_info.width = (int)ceil(width);line_info.count = count;mLength += line_info.count + 1;result.height += _height;setMax(result.width, line_info.width);width = 0;count = 0;<span style="color:#ff0000;">line_info.simbols.push_back(CharInfo());</span>mLineInfo.push_back(line_info);line_info.clear();// отменяем откатroll_back.clear();continue;}// тегelse if (character == L'#'){// берем следующий символ++ index;if (index == end){--index;    // это защитаcontinue;}character = *index;// если два подряд, то рисуем один шарп, если нет то меняем цветif (character != L'#'){// парсим первый символuint32 colour = convert_colour[(character - 48) & 0x3F];// и еще пять символов после шарпаfor (char i = 0; i < 5; i++){++ index;if (index == end){--index;    // это защитаcontinue;}colour <<= 4;colour += convert_colour[ ((*index) - 48) & 0x3F ];}// если нужно, то меняем красный и синий компонентыtexture_utility::convertColour(colour, _format);line_info.simbols.push_back( CharInfo(colour) );continue;}}GlyphInfo* info = _font->getGlyphInfo(character);if (info == nullptr)continue;if (FontCodeType::Space == character){roll_back.set(line_info.simbols.size(), index, count, width);}else if (FontCodeType::Tab == character){roll_back.set(line_info.simbols.size(), index, count, width);}float char_width = info->width;float char_height = info->height;float char_advance = info->advance;float char_bearingX = info->bearingX;float char_bearingY = info->bearingY;if (_height != font_height){float scale = (float)_height / font_height;char_width *= scale;char_height *= scale;char_advance *= scale;char_bearingX *= scale;char_bearingY *= scale;}float char_fullAdvance = char_bearingX + char_advance;<span style="color:#ff0000;">if( (_maxWidth != -1) && ((width + char_fullAdvance) > _maxWidth) && (_maxWidth>char_fullAdvance)){UString::const_iterator peeki_front = index;if (peeki_front!=_text.begin()){--peeki_front;GlyphInfo* info_front = _font->getGlyphInfo(*peeki_front);if (info_front){float char_advance_front = info_front->advance;float char_bearingX_front = info_front->bearingX;if (_height != font_height){float scale = (float)_height / font_height;char_advance_front *= scale;char_bearingX_front *= scale;}float char_fullAdvance_front = char_bearingX_front + char_advance_front;line_info.simbols.push_back(CharInfo(info->uvRect, char_width, char_height, char_advance, char_bearingX, char_bearingY));roll_back.set(line_info.simbols.size()-1, peeki_front, count-1, width-char_fullAdvance_front);width += char_fullAdvance;}}}</span>// перенос словif (_maxWidth != -1&& (width + char_fullAdvance) > _maxWidth&& !roll_back.empty()){// откатываем до последнего пробелаwidth = roll_back.getWidth();count = roll_back.getCount();index = roll_back.getTextIter();line_info.simbols.erase(line_info.simbols.begin() + roll_back.getPosition(), line_info.simbols.end());// запоминаем место отката, как полную строкуline_info.width = (int)ceil(width);line_info.count = count;mLength += line_info.count + 1;result.height += _height;setMax(result.width, line_info.width);width = 0;count = 0;mLineInfo.push_back(line_info);line_info.clear();// отменяем откатroll_back.clear();continue;}line_info.simbols.push_back(CharInfo(info->uvRect, char_width, char_height, char_advance, char_bearingX, char_bearingY));width += char_fullAdvance;count ++;}line_info.width = (int)ceil(width);line_info.count = count;mLength += line_info.count;mLineInfo.push_back(line_info);setMax(result.width, line_info.width);// теперь выравниванием строкиfor (VectorLineInfo::iterator line = mLineInfo.begin(); line != mLineInfo.end(); ++line){if (_align.isRight())line->offset = result.width - line->width;else if (_align.isHCenter())line->offset = (result.width - line->width) / 2;}mViewSize = result;}

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[code=C/C++]

void EditText::doRender(){if (nullptr == mFont || !mVisible || mEmptyView)return;if (mRenderItem->getCurrentUpdate() || mTextOutDate)updateRawData();Vertex* vertex = mRenderItem->getCurrentVertexBuffer();const RenderTargetInfo& renderTargetInfo = mRenderItem->getRenderTarget()->getInfo();// колличество отрисованных вершинsize_t vertexCount = 0;// текущие цветаuint32 colour = mCurrentColourNative;uint32 inverseColour = mInverseColourNative;uint32 selectedColour = mInvertSelect ? inverseColour : colour | 0x00FFFFFF;const VectorLineInfo& textViewData = mTextView.getData();float top = (float)(-mViewOffset.top + mCoord.top);FloatRect vertexRect;const FloatRect& selectedUVRect = mFont->getGlyphInfo(mBackgroundNormal ? FontCodeType::Selected : FontCodeType::SelectedBack)->uvRect;size_t index = 0;for (VectorLineInfo::const_iterator line = textViewData.begin(); line != textViewData.end(); ++line){float left = (float)(line->offset - mViewOffset.left + mCoord.left);for (VectorCharInfo::const_iterator sim = line->simbols.begin(); sim != line->simbols.end(); ++sim){if (sim->isColour()){colour = sim->getColour() | (colour & 0xFF000000);inverseColour = colour ^ 0x00FFFFFF;selectedColour = mInvertSelect ? inverseColour : colour | 0x00FFFFFF;continue;}// смещение текстуры для фонаbool select = index >= mStartSelect && index < mEndSelect;float fullAdvance = sim->getBearingX() + sim->getAdvance();// Render the selection, if any, first.if (select){vertexRect.set(left, top, left + fullAdvance, top + (float)mFontHeight);drawGlyph(renderTargetInfo, vertex, vertexCount, vertexRect, selectedUVRect, selectedColour);}// Render the glyph shadow, if any.if (mShadow){vertexRect.left = left + sim->getBearingX() + 1.0f;vertexRect.top = top + sim->getBearingY() + 1.0f;vertexRect.right = vertexRect.left + sim->getWidth();vertexRect.bottom = vertexRect.top + sim->getHeight();drawGlyph(renderTargetInfo, vertex, vertexCount, vertexRect, sim->getUVRect(), mShadowColourNative);}// Render the glyph itself.vertexRect.left = left + sim->getBearingX();vertexRect.top = top + sim->getBearingY();vertexRect.right = vertexRect.left + sim->getWidth();vertexRect.bottom = vertexRect.top + sim->getHeight();drawGlyph(renderTargetInfo, vertex, vertexCount, vertexRect, sim->getUVRect(), (!select || !mInvertSelect) ? colour : inverseColour);left += fullAdvance;++index;}top += mFontHeight;<span style="color:#cc0000;">//++index;</span>}// Render the cursor, if any, last.if (mVisibleCursor){IntPoint point = mTextView.getCursorPoint(mCursorPosition) - mViewOffset + mCoord.point();GlyphInfo* cursorGlyph = mFont->getGlyphInfo(static_cast<Char>(FontCodeType::Cursor));vertexRect.set((float)point.left, (float)point.top, (float)point.left + cursorGlyph->width, (float)(point.top + mFontHeight));drawGlyph(renderTargetInfo, vertex, vertexCount, vertexRect, cursorGlyph->uvRect, mCurrentColourNative | 0x00FFFFFF);}// колличество реально отрисованных вершинmRenderItem->setLastVertexCount(vertexCount);}

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MyGUI_TextViewData.h不要动