source/frontend/widgets/paramspinbox.cpp

   1 /*
   2  * Parameter SpinBox, a custom Qt4 widget
   3  * Copyright (C) 2011-2013 Filipe Coelho <falktx@falktx.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * For a full copy of the GNU General Public License see the doc/GPL.txt file.
  16  */
  17
  18 #include "paramspinbox.hpp"
  19
  20 #include <QtGui/QMouseEvent>
  21
  22 ParamProgressBar::ParamProgressBar(QWidget* parent)
  23     : QProgressBar(parent)
  24 {
  25     m_leftClickDown = false;
  26
  27     m_minimum = 0.0f;
  28     m_maximum = 1.0f;
  29     m_rvalue  = 0.0f;
  30
  31     m_textCall = nullptr;
  32
  33     setMinimum(0);
  34     setMaximum(1000);
  35     setValue(0);
  36     setFormat("(none)");
  37 }
  38
  39 void ParamProgressBar::set_minimum(float value)
  40 {
  41     m_minimum = value;
  42 }
  43
  44 void ParamProgressBar::set_maximum(float value)
  45 {
  46     m_maximum = value;
  47 }
  48
  49 void ParamProgressBar::set_value(float value)
  50 {
  51     m_rvalue = value;
  52     float vper = (value - m_minimum) / (m_maximum - m_minimum);
  53     setValue(vper * 1000);
  54 }
  55
  56 void ParamProgressBar::set_label(QString label)
  57 {
  58     m_label = label;
  59
  60     if (m_label == "(coef)")
  61     {
  62         m_label = "";
  63         m_preLabel = "*";
  64     }
  65 }
  66
  67 void ParamProgressBar::set_text_call(TextCallback* textCall)
  68 {
  69     m_textCall = textCall;
  70 }
  71
  72 void ParamProgressBar::handleMouseEventPos(const QPoint& pos)
  73 {
  74     float xper  = float(pos.x()) / width();
  75     float value = xper * (m_maximum - m_minimum) + m_minimum;
  76
  77     if (value < m_minimum)
  78         value = m_minimum;
  79     else if (value > m_maximum)
  80         value = m_maximum;
  81
  82     emit valueChangedFromBar(value);
  83 }
  84
  85 void ParamProgressBar::mousePressEvent(QMouseEvent* event)
  86 {
  87     if (event->button() == Qt::LeftButton)
  88     {
  89         handleMouseEventPos(event->pos());
  90         m_leftClickDown = true;
  91     }
  92     else
  93         m_leftClickDown = false;
  94     QProgressBar::mousePressEvent(event);
  95 }
  96
  97 void ParamProgressBar::mouseMoveEvent(QMouseEvent* event)
  98 {
  99     if (m_leftClickDown)
 100         handleMouseEventPos(event->pos());
 101     QProgressBar::mouseMoveEvent(event);
 102 }
 103
 104 void ParamProgressBar::mouseReleaseEvent(QMouseEvent* event)
 105 {
 106     m_leftClickDown = false;
 107     QProgressBar::mouseReleaseEvent(event);
 108 }
 109
 110 void ParamProgressBar::paintEvent(QPaintEvent* event)
 111 {
 112     if (m_textCall)
 113         setFormat(QString("%1 %2 %3").arg(m_preLabel).arg(m_textCall->textCallBack()).arg(m_label));
 114     else
 115         setFormat(QString("%1 %2 %3").arg(m_preLabel).arg(m_rvalue).arg(m_label));
 116
 117     QProgressBar::paintEvent(event);
 118 }