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misc.cpp
author insilmaril
Wed Jun 14 10:28:01 2006 +0000 (2006-06-14)
branchqt4-port
changeset 5 5cfbba1dc2f8
parent 0 7a96bd401351
permissions -rw-r--r--
Ported TextEditor Actions to QT4 
     1 #include <math.h>

     2 

     3 #include <qregexp.h>

     4 #include <qpoint.h>

     5 #include <stdlib.h>

     6 

     7 #include "misc.h"

     8 

     9 QString qpointToString (const QPoint &p)

    10 {

    11 	return "(" + QString("%1").arg(p.x()) +","+ QString ("%1").arg (p.y()) +")";

    12 }

    13 

    14 ostream &operator<< (ostream &stream, QPoint const &p)

    15 { 

    16 	stream << "("<<p.x()<<","<<p.y()<<")";

    17 	return stream;

    18 }

    19 

    20 float getAngle(const QPoint &p)

    21 {	

    22 	// Calculate angle of vector to y-axis

    23 	if (p.y()==0)

    24 	{

    25 		if (p.x()>=0)

    26 			return M_PI_2;

    27 		else

    28 			return 3* M_PI_2;

    29 	} else

    30 	{

    31 		if (p.y()>0) 

    32 			return (float)(M_PI  - atan ( (double)(p.x()) / (double)(p.y()) ) );

    33 		else	

    34 			if (p.x()<0)

    35 				return (float)( 2*M_PI - atan ( (double)(p.x()) / (double)(p.y()) ) );

    36 			else	

    37 				return (float)( - atan ( (double)(p.x()) / (double)(p.y()) ) );

    38 	}	

    39 }

    40 

    41 QPoint normalise(const QPoint &p)

    42 {	

    43 	// Calculate normalised position (fixed length) 

    44 

    45 	double px=p.x();

    46 	double py=p.y();

    47 	double x;

    48 	double y;

    49 	double r=150;

    50 

    51 	if (px==0)

    52 	{

    53 		x=0;

    54 		if (py>=0)

    55 			y=r;

    56 		else

    57 			y=-r;

    58 	} else

    59 	{

    60 		double sign;

    61 		double a;

    62 		if (px>0) 

    63 			sign=1; 

    64 		else 

    65 			sign=-1;

    66 		

    67 		a=atan (py / px);

    68 		x=cos (a) * r *sign;

    69 		y=sin (a) * r *sign;

    70 	}	

    71 	return QPoint ((int) (x),(int) (y));

    72 }

    73 

    74 

    75 // returns masked "<" ">" "&"

    76 QString quotemeta(const QString &s)

    77 {

    78 	QString r=s;

    79     QRegExp  rx("&(?!amp;)");

    80     r.replace ( rx,"&amp;");

    81     rx.setPattern( ">");

    82     r.replace ( rx,"&gt;");

    83     rx.setPattern( "<");

    84     r.replace ( rx,"&lt;");

    85     rx.setPattern( "\"");

    86     r.replace ( rx,"&quot;");

    87     return r;

    88 }

    89 

    90 int max(int a, int b)

    91 {

    92 	if (a>b)

    93 		return a;

    94 	return b;

    95 }

    96 

    97 int xmlObj::actindent=0;		// make instance of actindent

    98 

    99 xmlObj::xmlObj()

   100 {

   101     indentwidth=4;

   102 }

   103 

   104 

   105 // returns <s at />

   106 QString xmlObj::singleElement(QString s, QString at)

   107 {

   108     return indent() + "<" + s +" " + at +" " + "/>\n";

   109 }

   110 

   111 // returns <s>

   112 QString xmlObj::beginElement(QString s)

   113 {

   114     return indent() + "<" + s + ">\n";

   115 }

   116 

   117 // returns <s at>

   118 QString xmlObj::beginElement(QString s, QString at)

   119 {

   120     return indent() + "<" + s + " " + at + ">\n";

   121 }

   122 

   123 // returns </s>

   124 QString xmlObj::endElement(QString s)

   125 {

   126     return indent() + "</" + s + ">\n";

   127 }

   128 

   129 // returns  at="val"

   130 QString xmlObj::attribut(QString at, QString val)

   131 {

   132     return " " + at + "=\"" + quotemeta (val) + "\""; 

   133 }

   134 

   135 // returns <s> val </s>

   136 QString xmlObj::valueElement(QString el, QString val)

   137 {

   138     return indent() + "<" + el + ">" + quotemeta(val) + "</" +el + ">\n";

   139 }

   140 

   141 // returns <s at> val </s>

   142 QString xmlObj::valueElement(QString el, QString val, QString at)

   143 {

   144     return indent() + "<" + el + " " + at + ">" + quotemeta(val) + "</" +el + ">\n";

   145 }

   146 

   147 void xmlObj::incIndent()

   148 {

   149     actindent++;

   150 }	

   151 

   152 void xmlObj::decIndent()

   153 {

   154     actindent--;

   155     if (actindent<0) actindent=0;

   156 }	

   157 

   158 QString xmlObj::indent()

   159 {

   160     QString s;

   161     int i;

   162     for (i=0; i<actindent*indentwidth; i++)

   163     {

   164 		s= s + " ";

   165     }

   166     return s;

   167 }	

   168
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