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Tuesday the 22nd of May 2012 @ 12:58am

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LibN2L N2L Home Older News Downloads Documentation (n2l5) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Documentation (libN2L-4) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Bugtracker Project Page Report a Bug Bug List Related Things Life 2130 Devel Game Journal

LibN2L-4 Library Code Reference Classes Compounds Files Members Method Index Full Reference cGuiTextDisplay.cpp Go to the documentation of this file. /************************************************************************ Nova-2 Library (libN2L, or simply n2l) Game development C++ Library Copyright (C) 2003 Aaron Cameron 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; either version 2.1 of the License, or (at your option) any later version. 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA A copy of the GNU Lesser General Public License has been provided with this library in the file 'COPYING'. Contact information for the author of this library has been provided with this library in the file 'AUTHOR'. ************************************************************************/ #include "gui/cGuiTextDisplay.h" #include "n2l/dynVars.h" #include "n2l/resourceManagement.h" #include "n2l/events.h" #include "gui/cGuiSlider.h" #include "gui/cGuiSEInt.h" #include "gui/cGuiACInt.h" #include "gui/cGuiFactory.h" namespace n2l { # ifdef N2L_PASSIVE_GUI_REG tBool cGuiTextDisplay::smRegistered = cGuiFactory::current().registerLoader( "n2l::cGuiTextDisplay", cGuiElement::loadNew<cGuiTextDisplay> ); # endif /**************************************************************************/ cGuiTextDisplay::cGuiTextDisplay() { reset(); } /**************************************************************************/ cGuiTextDisplay::~cGuiTextDisplay() { reset(); } /**************************************************************************/ cGuiTextDisplay::cGuiTextDisplay( const cVfsNodeInterface &iNode ) { reset(); load( iNode ); } /**************************************************************************/ cGuiTextDisplay::cGuiTextDisplay( const cDynVar &iDefinition ) { reset(); load( iDefinition ); } /**************************************************************************/ void cGuiTextDisplay::load( const cVfsNodeInterface &iNode ) { cDynVar def; validateAndDecode( def, iNode, "n2l::cGuiTextDisplay" ); load( def ); } /**************************************************************************/ void cGuiTextDisplay::load( const cDynVar &iDefinition ) { // Load parent properties cGuiInteractive::load( iDefinition ); // Now my properties if (iDefinition["textStyle"]) { if (iDefinition["textStyle"].isArray()) textStyle( cGuiTextStyle( iDefinition["textStyle"] ) ); else textStyle( *cResourceManager::get<cGuiTextStyle>( iDefinition["textStyle"]) ); } if (iDefinition.keyExists("slider")) { if (iDefinition["slider"].isArray()) slider( cGuiSlider(iDefinition["slider"]) ); else { // Cleanly catch bad casts so we can show an error, instead // of just exploding anonymously. try { const cAutoPtr<const cGuiSlider> Slider = cResourceManager::getGuiElement(iDefinition["slider"]); slider( *Slider ); } catch (const cBadCastException & iException) { throw cParsingException( "cGuiTextDisplay::load", "Provided slider template file didn\'t " "define a slider"); } } } // slider was an array // Specifically do the text last, so the 'lines' reflow happens as // few times as possible. if (iDefinition.keyExists("text")) text( iDefinition["text"] ); } /**************************************************************************/ void cGuiTextDisplay::draw() const { tGuiPos textPos( innerPos() ); const tFloat LineSeperation = mTextStyle.font()->glyphRowSeperation( mTextStyle.fontHeight() ); const tFloat BottomEdge = (innerPos()+innerSize()).y()-mTextStyle.fontHeight(); tGuiPos lineSize( innerSize().x(), mTextStyle.fontHeight() ); tUint line=0; if (mSlider.isSet()) { line = tUint(mSlider->value()+0.5f); lineSize.x() -= mSlider->size().x(); } else { line = mLineOffset; } while (line<mLines.size() && textPos.y()<BottomEdge) { // Catch the zero size, because draw() will see it as lease to // draw as much as it can. // not none. if (mLines[line].mSize) mTextStyle.draw( textPos, lineSize, mText, mLines[line].mSPos, mLines[line].mSize ); ++line; textPos.y( textPos.y()+lineSize.y()+LineSeperation ); } if (mSlider.isSet()) mSlider->draw(); } /**************************************************************************/ void cGuiTextDisplay::textStyle( const cGuiTextStyle &iStyle ) { mTextStyle = iStyle; propertyChanged(); } /**************************************************************************/ const cGuiTextStyle & cGuiTextDisplay::textStyle() const { return mTextStyle; } /**************************************************************************/ void cGuiTextDisplay::slider( const cGuiSlider &iSliderTemplate ) { mSlider = iSliderTemplate.clone(); // Down on the wheel and kp should go deeper into the text mSlider->swapWheel( true ); propertyChanged(); dimensionChanged(); } /**************************************************************************/ void cGuiTextDisplay::text( const tString & iText ) { mText = substringReplace("\t"," ",iText); propertyChanged(); } /**************************************************************************/ const tString & cGuiTextDisplay::text() const { return mText; } /**************************************************************************/ void cGuiTextDisplay::lineInfo( const tUint &iLine, tUint &oSPos, tUint &oLen ) const { if (iLine >= mLines.size()) throw cOutOfBoundsException( "cGuiTextDisplay::lineInfo", "No such line to get info for.", asString(iLine) ); oSPos = mLines[iLine].mSPos; oLen = mLines[iLine].mSize; } /**************************************************************************/ const tUint cGuiTextDisplay::numLines() const { return mLines.size(); } /**************************************************************************/ const tUint &cGuiTextDisplay::lineOffset() const { return mLineOffset; } /**************************************************************************/ void cGuiTextDisplay::lineOffset( const tUint &iOffset ) { mLineOffset = n2lMin(iOffset, mLines.size()); } /**************************************************************************/ const cAutoPtr<cGuiElement> cGuiTextDisplay::clone() const { cAutoPtr<cGuiElement> newElement( new cGuiTextDisplay ); cloneInto( newElement ); return newElement; } /**************************************************************************/ void cGuiTextDisplay::prop( const tString &iName, const cDynVar &iVal, const tString &iInnerKey ) { if (iName == "textStyle") { if (iInnerKey.empty()) { if (iVal.isArray()) textStyle( iVal ); else textStyle( *cResourceManager::get<cGuiTextStyle>(iVal) ); } else mTextStyle.prop( iInnerKey, iVal ); } else cGuiElement::prop( iName, iVal ); } /**************************************************************************/ const cDynVar cGuiTextDisplay::prop( const tString &iName, const tString &iInnerKey ) const { if (iName == "textStyle") return mTextStyle.prop( iInnerKey ); return cGuiElement::prop( iName ); } /**************************************************************************/ void cGuiTextDisplay::systemEvent( const cAutoPtr<const cEventInterface> &i_iEvent ) { cGuiInteractive::systemEvent( i_iEvent ); if (i_iEvent->type()==EventType_MouseButton) { const cAutoPtr<const cMouseButtonEvent> Click( i_iEvent ); // Intercept up and down clicks and send them to the // slider instead of the canvas so that the wheel works // anywhere on the widget, rather than just on the // slide bar if ((Click->button()==MouseButton_Up || Click->button()==MouseButton_Down) && collides( Click->pos() ) ) { if (mSlider.isSet()) { cAutoPtr<cMouseButtonEvent> fakeClick = new cMouseButtonEvent(*Click); fakeClick->pos( mSlider->pos() ); mSlider->systemEvent( fakeClick ); } } else { // Slider is in here so we don't double send to it if // the up or down wheel is used. if (mSlider.isSet()) mSlider->systemEvent( i_iEvent ); } } else {// if this is a mouse button. if (mSlider.isSet()) mSlider->systemEvent( i_iEvent ); } } /**************************************************************************/ void cGuiTextDisplay::systemEventOutside( const cAutoPtr<const cEventInterface> &i_iEvent ) { cGuiInteractive::systemEventOutside( i_iEvent ); if (mSlider.isSet()) mSlider->systemEventOutside( i_iEvent ); } /**************************************************************************/ void cGuiTextDisplay::cloneInto( const cAutoPtr<cGuiTextDisplay> &i_ioElement ) const { // Parent Properties first cGuiInteractive::cloneInto( i_ioElement ); // Now our properties. i_ioElement->textStyle(mTextStyle); if (mSlider.isSet()) i_ioElement->slider( *mSlider ); i_ioElement->text(mText); i_ioElement->mLineOffset = mLineOffset; } /**************************************************************************/ void cGuiTextDisplay::dimensionChanged() { // Call our parent first cGuiInteractive::dimensionChanged(); if (mSlider.isSet()) { mSlider->pos( tGuiPos(innerPos().x()+innerSize().x()-mSlider->size().x(), innerPos().y()) ); mSlider->size( tGuiPos(mSlider->size().x(),innerSize().y()) ); } } /**************************************************************************/ void cGuiTextDisplay::propertyChanged() { // Call our parent first cGuiInteractive::propertyChanged(); // Rebuild the line indicies. mLines.clear(); const tFloat LineSeperation = mTextStyle.font()->glyphRowSeperation( mTextStyle.fontHeight() ); tGuiPos lineSize( innerSize().x(), mTextStyle.fontHeight() ); // If se have a slider, leave room for it. if (mSlider.isSet()) lineSize.x() -= mSlider->size().x(); tString::size_type lastShownChar(0); tLineInfo lineInfo; const tLineInfo EmptyLine = {0,0}; while (lastShownChar<mText.size()) { // Find the next 'newline' character, this can be optimized // in the future. tString::size_type nextNewline( mText.find_first_of('\n', lastShownChar) ); // If there was a newline, seek until we hit it, rather than // showing the whole line. if (nextNewline!=tString::npos) { lineInfo.mSPos = lastShownChar; lineInfo.mSize = mTextStyle.wouldDraw( lineSize, mText, lastShownChar, nextNewline-lastShownChar ); lastShownChar += (lineInfo.mSize); // Strip the first newline, if there is one. We don't // want to render two. if (mText[lastShownChar] == '\n') ++lastShownChar; mLines.push_back(lineInfo); while (mText[lastShownChar] == '\n') { mLines.push_back(EmptyLine); ++lastShownChar; } } else { lineInfo.mSPos = lastShownChar; lineInfo.mSize = mTextStyle.wouldDraw( lineSize, mText, lastShownChar ); //++lineInfo.mSize; lastShownChar += lineInfo.mSize; mLines.push_back(lineInfo); if (mText[lastShownChar]==' ' || mText[lastShownChar]=='\n') ++lastShownChar; } } // Set the slider min/max/range based on the line calculations if (mSlider.isSet()) { mSlider->min(0); mSlider->value(0); mSlider->max( mLines.size() ); mSlider->range( tUint(innerSize().y()/(lineSize.y()+LineSeperation)) ); } } /**************************************************************************/ void cGuiTextDisplay::reset() { pos( tGuiPos(0,0) ); size( tGuiPos(0,0) ); mText = ""; mSlider = 0; mLineOffset = 0; mLineOffset = 0; } } // namespace n2l

©2012 Aaron Cameron