File size: 4,973 Bytes
e1191aa | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | /* FTSPlot - fast time series dataset plotter
Copyright (C) 2013 Michael Riss <Michael.Riss@gmail.com>
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
#include <math.h>
#include "XScaleBar.h"
#define MAX(a,b) a<b?b:a
using namespace FTSPlot;
XScaleBar::XScaleBar( QWidget* parent )
: QGLWidget( parent )
{
qtminDeltaticks = 3;
Xcursor = 0;
Xscale = 1;
Xmax = 1;
fixedFont.setFamily( "fixed" );
fixedFont.setPointSize( 8 );
fixedFont.setStyleStrategy( QFont::OpenGLCompatible );
fixedFont.setStyleHint( QFont::TypeWriter );
fm = new QFontMetrics( fixedFont );
}
void XScaleBar::initializeGL()
{
glClearColor(1.0, 1.0, 1.0, 0.0);
glShadeModel(GL_FLAT);
glEnable( GL_LINE_SMOOTH );
glEnable( GL_BLEND );
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
glLineWidth(1.0);
glDisable(GL_DEPTH_TEST);
}
void XScaleBar::resizeGL ( int width, int height )
{
this->width = width;
this->height = height;
glViewport(0, 0, (GLint)width, (GLint)height);
glMatrixMode ( GL_PROJECTION );
glLoadIdentity ();
gluOrtho2D( 0.0, (double) width, (double) height, 0 );
}
void XScaleBar::paintGL()
{
glClear ( GL_COLOR_BUFFER_BIT );
glColor3f ( 0.0, 0.0, 0.0 );
glLineWidth( 2.0 );
glBegin ( GL_LINES );
glVertex2d ( 0, 0 );
glVertex2d ( width, 0 );
glEnd();
glLineWidth( 1.0 );
// Draw tick marks
long double XDelta = Xscale * (double) width;
long double XMax = Xcursor + XDelta;
qtlabelbuffer = " " + QString::number( XMax, 'f', 0 );
int labelWidth = fm->width( qtlabelbuffer );
long double powerDueToLabel = ceill( log10l( XDelta / ( (long double) width / labelWidth ))) - 1;
long double power = MAX( 0, ceill( log10l( XDelta / ( (long double)width / (long double)qtminDeltaticks ) ) ) );
power = MAX( power, powerDueToLabel );
long double XStart = powl( 10, power ) * ceill( Xcursor / powl(10, power) );
long double XEnd = powl( 10, power ) * floorl( screen2data(width) / powl(10, power) );
glBegin ( GL_LINES );
for ( long double idx = XStart; idx <= XEnd; idx += powl(10, power) )
{
glVertex2d( data2screen(idx), 0 );
glVertex2d( data2screen(idx), 5 );
}
XStart = powl( 10, power+1 ) * ceill( Xcursor / powl(10, power+1) ) - powl(10, power+1)/2.0 ;
if ( XStart < Xcursor )
{
XStart += powl(10, power+1);
}
XEnd = powl( 10, power+1 ) * floorl( screen2data(width) / powl(10, power+1) );
glBegin ( GL_LINES );
for ( long double idx = XStart; idx <= XEnd; idx += powl(10, power+1) )
{
glVertex2d( data2screen(idx), 0 );
glVertex2d( data2screen(idx), 8 );
}
XStart = powl( 10, power+1 ) * ceill( Xcursor / powl(10, power+1) );
XEnd = powl( 10, power+1 ) * floorl( screen2data(width) / powl(10, power+1) );
for ( long double idx = XStart; idx <= XEnd; idx += powl(10, power+1) )
{
glVertex2d( data2screen(idx), 0 );
glVertex2d( data2screen(idx), 10 );
}
glEnd();
for ( long double idx = XStart; idx <= XEnd; idx += powl(10, power+1) )
{
qtlabelbuffer = QString::number( idx, 'f', 0 );
renderText( data2screen(idx) - fm->width( qtlabelbuffer ) / 2, 20, qtlabelbuffer, fixedFont );
}
glFlush();
}
void XScaleBar::updateCoords( long double Xcursor, double Xscale )
{
this->Xcursor = Xcursor;
this->Xscale = Xscale;
this->makeCurrent();
update();
}
long double XScaleBar::screen2data( int screenCoord)
{
return Xcursor + (long double) screenCoord * (long double) Xscale;
}
int XScaleBar::data2screen( long double dataCoord )
{
return (int) ( ( (long double) dataCoord - Xcursor) / (long double) Xscale );
}
void XScaleBar::setNewXmin(long double Xmin)
{
this->Xmin = Xmin;
}
void XScaleBar::setNewXmax( long double Xmax )
{
this->Xmax = Xmax;
// Cached Calculations
stringstream buffer;
buffer << Xmax;
QString label;
label = QString::number( Xmax, 'f', 0 );
int qtlabelwidth = fm->width(label);
qtminDeltaticks = MAX( 3, ceill( qtlabelwidth / 10.0 ) );
update();
}
// kate: indent-mode cstyle; space-indent on; indent-width 0;
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