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744 lines
16 KiB
C++
744 lines
16 KiB
C++
/*
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* TextControls.cpp, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#include "StdInc.h"
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#include "TextControls.h"
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#include "Buttons.h"
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#include "Images.h"
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#include "../CPlayerInterface.h"
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#include "../gui/CGuiHandler.h"
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#include "../windows/CMessage.h"
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#include "../adventureMap/CInGameConsole.h"
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#include "../renderSDL/SDL_Extensions.h"
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#include "../../lib/TextOperations.h"
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#ifdef VCMI_ANDROID
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#include "lib/CAndroidVMHelper.h"
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#endif
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std::list<CFocusable*> CFocusable::focusables;
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CFocusable * CFocusable::inputWithFocus;
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std::string CLabel::visibleText()
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{
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return text;
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}
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void CLabel::showAll(SDL_Surface * to)
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{
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CIntObject::showAll(to);
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if(!visibleText().empty())
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blitLine(to, pos, visibleText());
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}
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CLabel::CLabel(int x, int y, EFonts Font, ETextAlignment Align, const SDL_Color & Color, const std::string & Text)
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: CTextContainer(Align, Font, Color), text(Text)
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{
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type |= REDRAW_PARENT;
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autoRedraw = true;
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pos.x += x;
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pos.y += y;
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pos.w = pos.h = 0;
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if(alignment == ETextAlignment::TOPLEFT) // causes issues for MIDDLE
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{
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pos.w = (int)graphics->fonts[font]->getStringWidth(visibleText().c_str());
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pos.h = (int)graphics->fonts[font]->getLineHeight();
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}
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}
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Point CLabel::getBorderSize()
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{
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return Point(0, 0);
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}
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std::string CLabel::getText()
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{
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return text;
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}
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void CLabel::setAutoRedraw(bool value)
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{
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autoRedraw = value;
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}
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void CLabel::setText(const std::string & Txt)
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{
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text = Txt;
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if(autoRedraw)
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{
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if(background || !parent)
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redraw();
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else
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parent->redraw();
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}
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}
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void CLabel::setColor(const SDL_Color & Color)
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{
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color = Color;
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if(autoRedraw)
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{
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if(background || !parent)
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redraw();
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else
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parent->redraw();
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}
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}
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size_t CLabel::getWidth()
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{
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return graphics->fonts[font]->getStringWidth(visibleText());;
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}
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CMultiLineLabel::CMultiLineLabel(Rect position, EFonts Font, ETextAlignment Align, const SDL_Color & Color, const std::string & Text) :
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CLabel(position.x, position.y, Font, Align, Color, Text),
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visibleSize(0, 0, position.w, position.h)
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{
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pos.w = position.w;
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pos.h = position.h;
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splitText(Text, true);
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}
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void CMultiLineLabel::setVisibleSize(Rect visibleSize, bool redrawElement)
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{
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this->visibleSize = visibleSize;
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if(redrawElement)
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redraw();
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}
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void CMultiLineLabel::scrollTextBy(int distance)
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{
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scrollTextTo(visibleSize.y + distance);
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}
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void CMultiLineLabel::scrollTextTo(int distance, bool redrawAfterScroll)
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{
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Rect size = visibleSize;
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size.y = distance;
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setVisibleSize(size, redrawAfterScroll);
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}
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void CMultiLineLabel::setText(const std::string & Txt)
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{
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splitText(Txt, false); //setText used below can handle redraw
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CLabel::setText(Txt);
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}
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void CTextContainer::blitLine(SDL_Surface * to, Rect destRect, std::string what)
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{
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const auto f = graphics->fonts[font];
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Point where = destRect.topLeft();
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// input is rect in which given text should be placed
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// calculate proper position for top-left corner of the text
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if(alignment == ETextAlignment::TOPLEFT)
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{
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where.x += getBorderSize().x;
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where.y += getBorderSize().y;
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}
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if(alignment == ETextAlignment::CENTER)
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{
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where.x += (int(destRect.w) - int(f->getStringWidth(what))) / 2;
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where.y += (int(destRect.h) - int(f->getLineHeight())) / 2;
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}
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if(alignment == ETextAlignment::BOTTOMRIGHT)
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{
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where.x += getBorderSize().x + destRect.w - (int)f->getStringWidth(what);
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where.y += getBorderSize().y + destRect.h - (int)f->getLineHeight();
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}
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size_t begin = 0;
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std::string delimeters = "{}";
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size_t currDelimeter = 0;
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do
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{
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size_t end = what.find_first_of(delimeters[currDelimeter % 2], begin);
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if(begin != end)
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{
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std::string toPrint = what.substr(begin, end - begin);
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if(currDelimeter % 2) // Enclosed in {} text - set to yellow
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f->renderTextLeft(to, toPrint, Colors::YELLOW, where);
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else // Non-enclosed text, use default color
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f->renderTextLeft(to, toPrint, color, where);
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begin = end;
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where.x += (int)f->getStringWidth(toPrint);
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}
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currDelimeter++;
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} while(begin++ != std::string::npos);
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}
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CTextContainer::CTextContainer(ETextAlignment alignment, EFonts font, SDL_Color color) :
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alignment(alignment),
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font(font),
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color(color)
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{
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}
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void CMultiLineLabel::showAll(SDL_Surface * to)
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{
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CIntObject::showAll(to);
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const auto f = graphics->fonts[font];
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// calculate which lines should be visible
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int totalLines = static_cast<int>(lines.size());
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int beginLine = visibleSize.y;
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int endLine = getTextLocation().h + visibleSize.y;
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if(beginLine < 0)
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beginLine = 0;
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else
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beginLine /= (int)f->getLineHeight();
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if(endLine < 0)
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endLine = 0;
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else
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endLine /= (int)f->getLineHeight();
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endLine++;
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// and where they should be displayed
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Point lineStart = getTextLocation().topLeft() - visibleSize + Point(0, beginLine * (int)f->getLineHeight());
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Point lineSize = Point(getTextLocation().w, (int)f->getLineHeight());
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CSDL_Ext::CClipRectGuard guard(to, getTextLocation()); // to properly trim text that is too big to fit
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for(int i = beginLine; i < std::min(totalLines, endLine); i++)
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{
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if(!lines[i].empty()) //non-empty line
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blitLine(to, Rect(lineStart, lineSize), lines[i]);
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lineStart.y += (int)f->getLineHeight();
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}
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}
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void CMultiLineLabel::splitText(const std::string & Txt, bool redrawAfter)
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{
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lines.clear();
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const auto f = graphics->fonts[font];
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int lineHeight = static_cast<int>(f->getLineHeight());
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lines = CMessage::breakText(Txt, pos.w, font);
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textSize.y = lineHeight * (int)lines.size();
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textSize.x = 0;
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for(const std::string & line : lines)
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vstd::amax(textSize.x, f->getStringWidth(line.c_str()));
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if(redrawAfter)
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redraw();
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}
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Rect CMultiLineLabel::getTextLocation()
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{
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// this method is needed for vertical alignment alignment of text
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// when height of available text is smaller than height of widget
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// in this case - we should add proper offset to display text at required position
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if(pos.h <= textSize.y)
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return pos;
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Point textSize(pos.w, (int)graphics->fonts[font]->getLineHeight() * (int)lines.size());
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Point textOffset(pos.w - textSize.x, pos.h - textSize.y);
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switch(alignment)
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{
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case ETextAlignment::TOPLEFT: return Rect(pos.topLeft(), textSize);
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case ETextAlignment::CENTER: return Rect(pos.topLeft() + textOffset / 2, textSize);
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case ETextAlignment::BOTTOMRIGHT: return Rect(pos.topLeft() + textOffset, textSize);
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}
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assert(0);
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return Rect();
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}
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CLabelGroup::CLabelGroup(EFonts Font, ETextAlignment Align, const SDL_Color & Color)
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: font(Font), align(Align), color(Color)
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{
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defActions = 255 - DISPOSE;
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}
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void CLabelGroup::add(int x, int y, const std::string & text)
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{
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OBJECT_CONSTRUCTION_CUSTOM_CAPTURING(255 - DISPOSE);
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labels.push_back(std::make_shared<CLabel>(x, y, font, align, color, text));
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}
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size_t CLabelGroup::currentSize() const
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{
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return labels.size();
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}
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CTextBox::CTextBox(std::string Text, const Rect & rect, int SliderStyle, EFonts Font, ETextAlignment Align, const SDL_Color & Color) :
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sliderStyle(SliderStyle),
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slider(nullptr)
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{
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OBJECT_CONSTRUCTION_CAPTURING(255 - DISPOSE);
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label = std::make_shared<CMultiLineLabel>(rect, Font, Align, Color);
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type |= REDRAW_PARENT;
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pos.x += rect.x;
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pos.y += rect.y;
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pos.h = rect.h;
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pos.w = rect.w;
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assert(pos.w >= 40); //we need some space
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setText(Text);
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}
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void CTextBox::sliderMoved(int to)
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{
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label->scrollTextTo(to);
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}
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void CTextBox::resize(Point newSize)
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{
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pos.w = newSize.x;
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pos.h = newSize.y;
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label->pos.w = pos.w;
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label->pos.h = pos.h;
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slider.reset();
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setText(label->getText()); // force refresh
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}
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void CTextBox::setText(const std::string & text)
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{
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label->pos.w = pos.w; // reset to default before textSize.y check
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label->setText(text);
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if(label->textSize.y <= label->pos.h && slider)
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{
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// slider is no longer needed
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slider.reset();
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}
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else if(slider)
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{
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// decrease width again if slider still used
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label->pos.w = pos.w - 32;
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label->setText(text);
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slider->setAmount(label->textSize.y);
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}
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else if(label->textSize.y > label->pos.h)
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{
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// create slider and update widget
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label->pos.w = pos.w - 32;
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label->setText(text);
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OBJECT_CONSTRUCTION_CUSTOM_CAPTURING(255 - DISPOSE);
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slider = std::make_shared<CSlider>(Point(pos.w - 32, 0), pos.h, std::bind(&CTextBox::sliderMoved, this, _1),
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label->pos.h, label->textSize.y, 0, false, CSlider::EStyle(sliderStyle));
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slider->setScrollStep((int)graphics->fonts[label->font]->getLineHeight());
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}
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}
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void CGStatusBar::setEnteringMode(bool on)
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{
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consoleText.clear();
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if (on)
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{
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assert(enteringText == false);
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alignment = ETextAlignment::TOPLEFT;
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GH.startTextInput(pos);
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setText(consoleText);
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}
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else
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{
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assert(enteringText == true);
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alignment = ETextAlignment::CENTER;
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GH.stopTextInput();
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setText(hoverText);
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}
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enteringText = on;
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}
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void CGStatusBar::setEnteredText(const std::string & text)
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{
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assert(enteringText == true);
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consoleText = text;
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setText(text);
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}
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void CGStatusBar::write(const std::string & Text)
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{
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hoverText = Text;
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if (enteringText == false)
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setText(hoverText);
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}
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void CGStatusBar::clearIfMatching(const std::string & Text)
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{
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if (hoverText == Text)
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clear();
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}
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void CGStatusBar::clear()
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{
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write({});
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}
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CGStatusBar::CGStatusBar(std::shared_ptr<CPicture> background_, EFonts Font, ETextAlignment Align, const SDL_Color & Color)
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: CLabel(background_->pos.x, background_->pos.y, Font, Align, Color, "")
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, enteringText(false)
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{
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addUsedEvents(LCLICK);
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background = background_;
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addChild(background.get());
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pos = background->pos;
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getBorderSize();
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autoRedraw = false;
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}
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CGStatusBar::CGStatusBar(int x, int y, std::string name, int maxw)
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: CLabel(x, y, FONT_SMALL, ETextAlignment::CENTER)
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, enteringText(false)
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{
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addUsedEvents(LCLICK);
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OBJECT_CONSTRUCTION_CAPTURING(255 - DISPOSE);
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background = std::make_shared<CPicture>(name);
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pos = background->pos;
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if((unsigned)maxw < (unsigned)pos.w) //(insigned)-1 > than any correct value of pos.w
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{
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//execution of this block when maxw is incorrect breaks text centralization (issue #3151)
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vstd::amin(pos.w, maxw);
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background->srcRect = Rect(0, 0, maxw, pos.h);
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}
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autoRedraw = false;
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}
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void CGStatusBar::show(SDL_Surface * to)
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{
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showAll(to);
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}
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void CGStatusBar::init()
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{
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GH.statusbar = shared_from_this();
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}
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void CGStatusBar::clickLeft(tribool down, bool previousState)
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{
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if(!down)
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{
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if(LOCPLINT && LOCPLINT->cingconsole->active)
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LOCPLINT->cingconsole->startEnteringText();
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}
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}
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void CGStatusBar::deactivate()
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{
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if (enteringText)
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LOCPLINT->cingconsole->endEnteringText(false);
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CIntObject::deactivate();
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}
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Point CGStatusBar::getBorderSize()
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{
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//Width of borders where text should not be printed
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static const Point borderSize(5, 1);
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switch(alignment)
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{
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case ETextAlignment::TOPLEFT: return Point(borderSize.x, borderSize.y);
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case ETextAlignment::CENTER: return Point(pos.w / 2, pos.h / 2);
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case ETextAlignment::BOTTOMRIGHT: return Point(pos.w - borderSize.x, pos.h - borderSize.y);
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}
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assert(0);
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return Point();
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}
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CTextInput::CTextInput(const Rect & Pos, EFonts font, const CFunctionList<void(const std::string &)> & CB)
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: CLabel(Pos.x, Pos.y, font, ETextAlignment::CENTER),
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cb(CB),
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CFocusable(std::make_shared<CKeyboardFocusListener>(this))
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{
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type |= REDRAW_PARENT;
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pos.h = Pos.h;
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pos.w = Pos.w;
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captureAllKeys = true;
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background.reset();
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addUsedEvents(LCLICK | KEYBOARD | TEXTINPUT);
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#if !defined(VCMI_MOBILE)
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giveFocus();
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#endif
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}
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CTextInput::CTextInput(const Rect & Pos, const Point & bgOffset, const std::string & bgName, const CFunctionList<void(const std::string &)> & CB)
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:cb(CB), CFocusable(std::make_shared<CKeyboardFocusListener>(this))
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{
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pos += Pos.topLeft();
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pos.h = Pos.h;
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pos.w = Pos.w;
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captureAllKeys = true;
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OBJ_CONSTRUCTION;
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background = std::make_shared<CPicture>(bgName, bgOffset.x, bgOffset.y);
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addUsedEvents(LCLICK | KEYBOARD | TEXTINPUT);
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#if !defined(VCMI_MOBILE)
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giveFocus();
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#endif
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}
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CTextInput::CTextInput(const Rect & Pos, std::shared_ptr<IImage> srf)
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:CFocusable(std::make_shared<CKeyboardFocusListener>(this))
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{
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pos += Pos.topLeft();
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captureAllKeys = true;
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OBJ_CONSTRUCTION;
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background = std::make_shared<CPicture>(srf, Pos);
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pos.w = background->pos.w;
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pos.h = background->pos.h;
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background->pos = pos;
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addUsedEvents(LCLICK | KEYBOARD | TEXTINPUT);
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#if !defined(VCMI_MOBILE)
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giveFocus();
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#endif
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}
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std::atomic<int> CKeyboardFocusListener::usageIndex(0);
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CKeyboardFocusListener::CKeyboardFocusListener(CTextInput * textInput)
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:textInput(textInput)
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{
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}
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void CKeyboardFocusListener::focusGot()
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{
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GH.startTextInput(textInput->pos);
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usageIndex++;
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}
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void CKeyboardFocusListener::focusLost()
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{
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if(0 == --usageIndex)
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{
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GH.stopTextInput();
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}
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}
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std::string CTextInput::visibleText()
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{
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return focus ? text + newText + "_" : text;
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}
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void CTextInput::clickLeft(tribool down, bool previousState)
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{
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if(down && !focus)
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giveFocus();
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}
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void CTextInput::keyPressed(const SDL_Keycode & key)
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{
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|
if(!focus)
|
|
return;
|
|
|
|
if(key == SDLK_TAB)
|
|
{
|
|
moveFocus();
|
|
GH.breakEventHandling();
|
|
return;
|
|
}
|
|
|
|
bool redrawNeeded = false;
|
|
|
|
switch(key)
|
|
{
|
|
case SDLK_DELETE: // have index > ' ' so it won't be filtered out by default section
|
|
return;
|
|
case SDLK_BACKSPACE:
|
|
if(!newText.empty())
|
|
{
|
|
Unicode::trimRight(newText);
|
|
redrawNeeded = true;
|
|
}
|
|
else if(!text.empty())
|
|
{
|
|
Unicode::trimRight(text);
|
|
redrawNeeded = true;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if(redrawNeeded)
|
|
{
|
|
redraw();
|
|
cb(text);
|
|
}
|
|
}
|
|
|
|
void CTextInput::setText(const std::string & nText)
|
|
{
|
|
setText(nText, false);
|
|
}
|
|
|
|
void CTextInput::setText(const std::string & nText, bool callCb)
|
|
{
|
|
CLabel::setText(nText);
|
|
if(callCb)
|
|
cb(text);
|
|
}
|
|
|
|
bool CTextInput::captureThisKey(const SDL_Keycode & key)
|
|
{
|
|
if(key == SDLK_RETURN || key == SDLK_KP_ENTER || key == SDLK_ESCAPE)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
void CTextInput::textInputed(const std::string & enteredText)
|
|
{
|
|
if(!focus)
|
|
return;
|
|
std::string oldText = text;
|
|
|
|
text += enteredText;
|
|
|
|
filters(text, oldText);
|
|
if(text != oldText)
|
|
{
|
|
redraw();
|
|
cb(text);
|
|
}
|
|
newText.clear();
|
|
}
|
|
|
|
void CTextInput::textEdited(const std::string & enteredText)
|
|
{
|
|
if(!focus)
|
|
return;
|
|
|
|
newText = enteredText;
|
|
redraw();
|
|
cb(text + newText);
|
|
}
|
|
|
|
void CTextInput::filenameFilter(std::string & text, const std::string &)
|
|
{
|
|
static const std::string forbiddenChars = "<>:\"/\\|?*\r\n"; //if we are entering a filename, some special characters won't be allowed
|
|
size_t pos;
|
|
while((pos = text.find_first_of(forbiddenChars)) != std::string::npos)
|
|
text.erase(pos, 1);
|
|
}
|
|
|
|
void CTextInput::numberFilter(std::string & text, const std::string & oldText, int minValue, int maxValue)
|
|
{
|
|
assert(minValue < maxValue);
|
|
|
|
if(text.empty())
|
|
text = "0";
|
|
|
|
size_t pos = 0;
|
|
if(text[0] == '-') //allow '-' sign as first symbol only
|
|
pos++;
|
|
|
|
while(pos < text.size())
|
|
{
|
|
if(text[pos] < '0' || text[pos] > '9')
|
|
{
|
|
text = oldText;
|
|
return; //new text is not number.
|
|
}
|
|
pos++;
|
|
}
|
|
try
|
|
{
|
|
int value = boost::lexical_cast<int>(text);
|
|
if(value < minValue)
|
|
text = boost::lexical_cast<std::string>(minValue);
|
|
else if(value > maxValue)
|
|
text = boost::lexical_cast<std::string>(maxValue);
|
|
}
|
|
catch(boost::bad_lexical_cast &)
|
|
{
|
|
//Should never happen. Unless I missed some cases
|
|
logGlobal->warn("Warning: failed to convert %s to number!", text);
|
|
text = oldText;
|
|
}
|
|
}
|
|
|
|
CFocusable::CFocusable()
|
|
:CFocusable(std::make_shared<IFocusListener>())
|
|
{
|
|
}
|
|
|
|
CFocusable::CFocusable(std::shared_ptr<IFocusListener> focusListener)
|
|
: focusListener(focusListener)
|
|
{
|
|
focus = false;
|
|
focusables.push_back(this);
|
|
}
|
|
|
|
CFocusable::~CFocusable()
|
|
{
|
|
if(hasFocus())
|
|
{
|
|
inputWithFocus = nullptr;
|
|
focusListener->focusLost();
|
|
}
|
|
|
|
focusables -= this;
|
|
}
|
|
|
|
bool CFocusable::hasFocus() const
|
|
{
|
|
return inputWithFocus == this;
|
|
}
|
|
|
|
void CFocusable::giveFocus()
|
|
{
|
|
focus = true;
|
|
focusListener->focusGot();
|
|
redraw();
|
|
|
|
if(inputWithFocus)
|
|
{
|
|
inputWithFocus->focus = false;
|
|
inputWithFocus->focusListener->focusLost();
|
|
inputWithFocus->redraw();
|
|
}
|
|
|
|
inputWithFocus = this;
|
|
}
|
|
|
|
void CFocusable::moveFocus()
|
|
{
|
|
auto i = vstd::find(focusables, this),
|
|
ourIt = i;
|
|
for(i++; i != ourIt; i++)
|
|
{
|
|
if(i == focusables.end())
|
|
i = focusables.begin();
|
|
|
|
if((*i)->active)
|
|
{
|
|
(*i)->giveFocus();
|
|
break;
|
|
}
|
|
}
|
|
}
|