Added KDE3 version of ktechlab

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/ktechlab@1095338 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 170 insertions, 0 deletions

diff --git a/src/flowparts/varcomparison.cpp b/src/flowparts/varcomparison.cpp
new file mode 100644
index 0000000..e01ebf2
--- /dev/null
+++ b/src/flowparts/varcomparison.cpp
@@ -0,0 +1,170 @@
+/***************************************************************************
+ *   Copyright (C) 2003 by David Saxton                                    *
+ *   david@bluehaze.org                                                    *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+#include "varcomparison.h"
+
+#include "libraryitem.h"
+#include "flowcode.h"
+
+#include <klocale.h>
+
+Item* VarComparison::construct( ItemDocument *itemDocument, bool newItem, const char *id )
+{
+	return new VarComparison( (ICNDocument*)itemDocument, newItem, id );
+}
+
+LibraryItem* VarComparison::libraryItem()
+{
+	return new LibraryItem(
+		QString("flow/varcomparison"),
+		i18n("Comparison"),
+		i18n("Variables"),
+		"branch.png",
+		LibraryItem::lit_flowpart,
+		VarComparison::construct );
+}
+
+VarComparison::VarComparison( ICNDocument *icnDocument, bool newItem, const char *id )
+	: FlowPart( icnDocument, newItem, (id) ? id : "varcomparison" )
+{
+	m_name = i18n("Variable Comparison");
+	m_desc = i18n("Conditional branch point, depending on the comparison of two values. The supported comparisons are:<ul><li><b>x == y</b> - Equality: true if x has the same value as y.</li><li><b>x &lt; y</b> - Less than: true if x is smaller than y.</li><li><b>x &gt; y</b> - Greater than: true if x is bigger than y.</li><li><b>x &lt;= y</b> - Less than or equal: true if x is less than or equal to y.</li><li><b>x &gt;= y</b> - Greater than or equal: true if x is greater than or equal to y.</li><li><b>x != y</b> - Does not equal: true if x does not have the same value as y.</li></ul>");
+	initDecisionSymbol();
+	createStdInput();
+	createStdOutput();
+	createAltOutput();
+	
+	createProperty( "0var1", Variant::Type::Combo );
+	property("0var1")->setCaption( i18n("Variable") );
+	property("0var1")->setValue("x");
+	
+	createProperty( "1op", Variant::Type::Select );
+	property("1op")->setAllowed( QStringList::split( ',', "==,<,>,<=,>=,!=" ) );
+	property("1op")->setValue("==");
+	property("1op")->setToolbarCaption(" ");
+	property("1op")->setEditorCaption( i18n("Operation") );
+	
+	createProperty( "2var2", Variant::Type::Combo );
+	property("2var2")->setToolbarCaption(" ");
+	property("2var2")->setEditorCaption( i18n("Value") );
+	property("2var2")->setValue("0");
+	
+	addDisplayText( "output_false", QRect( offsetX()+width(), 2, 40, 20 ), "No" );
+	addDisplayText( "output_true", QRect( 0, offsetY()+height(), 50, 20 ), "Yes" ); 
+}
+
+VarComparison::~VarComparison()
+{
+}
+
+void VarComparison::dataChanged()
+{
+	setCaption( dataString("0var1") + " " + dataString("1op") + " " + dataString("2var2") + " ?" );
+}
+
+QString VarComparison::oppOp( const QString &op )
+{
+	if		( op == "==" )	return "!=";
+	if		( op == "!=" )	return "==";
+	else if ( op == "<" )	return ">=";
+	else if ( op == ">=" )	return "<";
+	else if ( op == ">" )	return "<=";
+	else if ( op == "<=" )	return ">";
+	else return "__UNKNOWN_OP__";
+}
+
+void VarComparison::generateMicrobe( FlowCode *code )
+{
+	QString var1 = dataString("0var1");
+	QString var2 = dataString("2var2");
+	QString test = dataString("1op");
+	
+	handleIfElse( code, var1+" "+test+" "+var2, var1+" "+oppOp(test)+" "+var2, "stdoutput", "altoutput" );
+	
+#if 0
+	code->addCode( "if "+var1+" "+test+" "+var2+"\n{\n" );
+	code->addCodeBranch( outputPart("stdoutput") );
+	code->addCode("}");
+	if ( outputPart("altoutput") )
+	{
+		code->addCode("else\n{");
+		code->addCodeBranch( outputPart("altoutput") );
+		code->addCode("}");
+	}
+#endif
+	
+#if 0
+	QString newCode;
+	
+	if ( FlowCode::isLiteral(var2) ) newCode += "movlw " + var2 + " ; Move literal to register w\n";
+	else
+	{
+		code->addVariable(var2);
+		newCode += "movf " + var2 + ",0 ; Move " + var2 + " to register w\n";
+	}
+	
+	if ( FlowCode::isLiteral(var1) ) newCode += "sublw " + var1 + " ; Subtract register w from " + var1 + ", placing result in w\n";
+	else
+	{
+		code->addVariable(var1);
+		newCode += "subwf " + var1 + ",0 ; Subtract register w from " + var1 + ", placing result in w\n";
+	}
+	
+	
+	if		( test == "==" )
+	{
+		// check: works
+		newCode += "btfss STATUS,2 ; Check if zero flag is set\n";
+		newCode += gotoCode("altoutput") + " ; Result from calculation was non-zero; hence comparison is false\n";
+		newCode += gotoCode("stdoutput") + " ; Ouput was zero; hence comparison is true, so continue from this point\n";
+	}
+	else if	( test == "!=" )
+	{
+		// check: works
+		newCode += "btfsc STATUS,2 ; Check if zero flag is clear\n";
+		newCode += gotoCode("altoutput") + " ; Result from calculation was zero; hence comparison is false\n";
+		newCode += gotoCode("stdoutput") + " ; Output was non-zero; hence comparison is true, so continue from this point\n";
+	}
+	else if	( test == ">=" )
+	{
+		// check: works
+		newCode += "btfss STATUS,0 ; Check if carry flag is set\n";
+		newCode += gotoCode("altoutput") + " ; Result from calculation is negative; hence comparison is false\n";
+		newCode += gotoCode("stdoutput") + " ; Result from calculation is positive or zero; so continue from this point\n";
+	}
+	else if	( test == ">" )
+	{
+		// check: works
+		newCode += "btfss STATUS,0 ; Check if carry flag is set\n";
+		newCode += gotoCode("altoutput") + " ; Result is negative; hence comparison is false\n";
+		newCode += "btfsc STATUS,2 ; Check if zero flag is set\n";
+		newCode += gotoCode("altoutput") + " ; Result is zero; hence comparison is false\n";
+		newCode += gotoCode("stdoutput") + " ; Comparison is true, so continue from this point\n";
+	}
+	else if	( test == "<" )
+	{
+		// check: works
+		newCode += "btfsc STATUS,0 ; Check if carry flag is set\n";
+		newCode += gotoCode("altoutput");
+		newCode += gotoCode("stdoutput");
+	}
+	else if	( test == "<=" )
+	{
+		// check: works
+		newCode += "btfsc STATUS,2 ; Check if result is zero\n";
+		newCode += gotoCode("stdoutput") + " ; Result is zero; hence comparison is true\n";
+		newCode += "btfsc STATUS,0 ; Check if carry flag is set\n";
+		newCode += gotoCode("altoutput") + " ; Result is positive (not zero, has already tested for this); hence comparison is false\n";
+		newCode += gotoCode("stdoutput") + " ; Result is negative, hence comparison is true\n";
+	}
+	
+	code->addCodeBlock( id(), newCode );
+#endif
+}