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sdrangel/sdrgui/gui/valuedialz.cpp

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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2017 F4EXB //
// written by Edouard Griffiths //
// //
// Same as ValueDial but handles optionally positive and negative numbers with //
// sign display. //
// //
// 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 as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program 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 General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <QPainter>
#include <QMouseEvent>
#include <QWheelEvent>
#include <QKeyEvent>
#include <QLocale>
#include <QApplication>
#include <QAccessibleValueChangeEvent>
#include "gui/valuedialz.h"
ValueDialZ::ValueDialZ(bool positiveOnly, QWidget* parent, ColorMapper colorMapper) :
QWidget(parent),
m_positiveOnly(positiveOnly),
m_decimalPos(0),
m_animationState(0),
m_colorMapper(colorMapper)
{
setAutoFillBackground(false);
setAttribute(Qt::WA_OpaquePaintEvent, true);
setAttribute(Qt::WA_NoSystemBackground, true);
setAttribute(Qt::WA_InputMethodEnabled, true);
setMouseTracking(true);
setFocusPolicy(Qt::StrongFocus);
setInputMethodHints(Qt::ImhFormattedNumbersOnly);
m_background.setStart(0, 0);
m_background.setFinalStop(0, 1);
m_background.setCoordinateMode(QGradient::ObjectBoundingMode);
ColorMapper::colormap::const_iterator cmit = m_colorMapper.getDialBackgroundColorMap().begin();
ColorMapper::colormap::const_iterator cmitEnd = m_colorMapper.getDialBackgroundColorMap().end();
for (; cmit != cmitEnd; ++ cmit) {
m_background.setColorAt(cmit->first, cmit->second);
}
m_value = 0;
m_valueNew = 0;
m_valueMin = m_positiveOnly ? 0 : -2200000;
m_valueMax = 2200000;
m_numDigits = 7;
m_numThousandPoints = m_numDigits / 3;
m_cursor = -1;
m_digitWidth = 0;
m_digitHeight = 0;
m_hightlightedDigit = -1;
m_text = formatText(m_value);
m_cursorState = false;
const QLocale & cLocale = QLocale::c();
m_groupSeparator = cLocale.groupSeparator();
m_decSeparator = cLocale.decimalPoint();
connect(&m_animationTimer, SIGNAL(timeout()), this, SLOT(animate()));
connect(&m_blinkTimer, SIGNAL(timeout()), this, SLOT(blink()));
}
void ValueDialZ::setFont(const QFont& font)
{
QWidget::setFont(font);
QFontMetrics fm(font);
m_digitWidth = fm.horizontalAdvance('0');
m_digitHeight = fm.ascent();
if(m_digitWidth < m_digitHeight)
m_digitWidth = m_digitHeight;
setFixedWidth((m_numDigits + m_numThousandPoints + (m_positiveOnly ? 0 : 1)) * m_digitWidth + 2);
setFixedHeight(m_digitHeight * 2 + 2);
}
void ValueDialZ::setBold(bool bold)
{
QFont f = font();
f.setBold(bold);
setFont(f);
}
void ValueDialZ::setColorMapper(ColorMapper colorMapper)
{
m_colorMapper = colorMapper;
ColorMapper::colormap::const_iterator cmit = m_colorMapper.getDialBackgroundColorMap().begin();
ColorMapper::colormap::const_iterator cmitEnd = m_colorMapper.getDialBackgroundColorMap().end();
for (; cmit != cmitEnd; ++ cmit) {
m_background.setColorAt(cmit->first, cmit->second);
}
}
void ValueDialZ::setValue(qint64 value)
{
m_valueNew = value;
if(m_valueNew < m_valueMin) {
m_valueNew = m_valueMin;
}
else if(m_valueNew > m_valueMax) {
m_valueNew = m_valueMax;
}
QAccessibleValueChangeEvent event(this, m_valueNew);
QAccessible::updateAccessibility(&event);
if(m_valueNew < m_value) {
m_animationState = 1;
} else if(m_valueNew > m_value) {
m_animationState = -1;
} else {
return;
}
m_animationTimer.start(20);
m_textNew = formatText(m_valueNew);
emit changed(m_valueNew);
}
void ValueDialZ::setValueRange(bool positiveOnly, uint numDigits, qint64 min, qint64 max, int decimalPos)
{
m_positiveOnly = positiveOnly;
m_decimalPos = decimalPos < 0 ? 0 : decimalPos > (int) numDigits ? numDigits : decimalPos;
m_numDigits = numDigits;
m_numThousandPoints = m_numDigits < 3 ? 0 : (m_numDigits%3) == 0 ? (m_numDigits/3)-1 : m_numDigits/3;
setFixedWidth((m_numDigits + m_numThousandPoints + (m_positiveOnly ? 0 : 1)) * m_digitWidth + 2);
m_valueMin = positiveOnly ? (min < 0 ? 0 : min) : min;
m_valueMax = positiveOnly ? (max < 0 ? 0 : max) : max;
if (m_valueNew < m_valueMin)
{
setValue(m_valueMin);
}
else if (m_valueNew > m_valueMax)
{
setValue(m_valueMax);
}
else if ((m_value == 0) && (m_valueNew == 0))
{
m_text = formatText(0);
m_textNew = m_text;
update();
}
}
quint64 ValueDialZ::findExponent(int digit)
{
// digit and separators index from left to right
quint64 e = 1;
int s = (m_decimalPos % 3);
s = (3-s) % 3;
// digit and separators index from right to left starting at 1
int d = (m_numDigits + m_numThousandPoints + (m_positiveOnly ? 0 : 1)) - digit;
for (int i = s+1; i < d+s; i++)
{
// if ((i%4 == 0) || (m_positiveOnly && (i == d+s-1))) { // non digit positions
if (i%4 == 0) {
continue;
}
e *= 10;
}
// d = d - (d / 4) - 1;
// for (int i = 0; i < d; i++) {
// e *= 10;
// }
return e;
}
QChar ValueDialZ::digitNeigh(QChar c, bool dir)
{
if (c == QChar('+')) {
return QChar('-');
} else if (c == QChar('-')) {
return QChar('+');
}
if(dir)
{
if(c == QChar('0')) {
return QChar('9');
} else {
return QChar::fromLatin1(c.toLatin1() - 1);
}
}
else
{
if(c == QChar('9')) {
return QChar('0');
} else {
return QChar::fromLatin1(c.toLatin1() + 1);
}
}
}
QString ValueDialZ::formatText(qint64 value)
{
QString str = QString("%1%2").arg(m_positiveOnly ? "" : value < 0 ? "-" : "+").arg(value < 0 ? -value : value, m_numDigits, 10, QChar('0'));
int s = (m_decimalPos % 3);
s = (3-s) % 3;
int iDec = (m_decimalPos - 1) / 3;
for (int i = 0; i < m_numThousandPoints; i++)
{
int ipoint = m_numDigits + (m_positiveOnly ? 0 : 1) - 3 + s - 3 * i;
if (ipoint != 0) // do not insert leading point
{
if ((m_decimalPos != 0) && (i == iDec)) {
str.insert(ipoint, m_decSeparator);
} else {
str.insert(ipoint, m_groupSeparator);
}
}
}
return str;
}
void ValueDialZ::paintEvent(QPaintEvent*)
{
QPainter painter(this);
painter.setPen(Qt::black);
painter.setBrush(m_background);
painter.drawRect(0, 0, width() - 1, height() - 1);
painter.setPen(m_colorMapper.getBoundaryColor());
painter.setBrush(Qt::NoBrush);
for (int i = 1; i < 1 + m_numDigits + m_numThousandPoints; i++)
{
painter.setPen(m_colorMapper.getBoundaryColor());
painter.drawLine(1 + i * m_digitWidth, 1, 1 + i * m_digitWidth, height() - 1);
painter.setPen(m_colorMapper.getBoundaryAlphaColor());
painter.drawLine(0 + i * m_digitWidth, 1, 0 + i * m_digitWidth, height() - 1);
painter.drawLine(2 + i * m_digitWidth, 1, 2 + i * m_digitWidth, height() - 1);
}
painter.setPen(m_colorMapper.getBoundaryAlphaColor());
painter.drawLine(1, 1, 1, height() - 1);
painter.drawLine(width() - 2, 1, width() - 2, height() - 1);
// dial borders
painter.setPen(m_colorMapper.getDarkBorderColor());
painter.drawLine(0, 0, width() - 2, 0);
painter.drawLine(0, height() - 1, 0, 0);
painter.setPen(m_colorMapper.getLightBorderColor());
painter.drawLine(1, height() - 1, width() - 1, height() - 1);
painter.drawLine(width() - 1, height() - 1, width() - 1, 0);
if (m_hightlightedDigit >= 0)
{
painter.setPen(Qt::NoPen);
painter.setBrush(m_colorMapper.getHighlightColor());
painter.drawRect(2 + m_hightlightedDigit * m_digitWidth, 1, m_digitWidth - 1, height() - 1);
}
QColor secondaryForegroundColor = m_colorMapper.getSecondaryForegroundColor();
if (!isEnabled()) {
secondaryForegroundColor = secondaryForegroundColor.darker();
}
if (m_animationState == 0)
{
for (int i = 0; i < m_text.length(); i++)
{
painter.setClipRect(1 + i * m_digitWidth, 1, m_digitWidth, m_digitHeight * 2);
painter.setPen(secondaryForegroundColor);
painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * 0.6, m_digitWidth, m_digitHeight), Qt::AlignCenter, m_text.mid(i, 1));
if ((m_text[i] != m_groupSeparator) && (m_text[i] != m_decSeparator))
{
painter.setPen(m_colorMapper.getForegroundColor());
painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * -0.7, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], true));
painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * 1.9, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], false));
}
}
painter.setClipping(false);
if ((m_cursor >= 0) && (m_cursorState))
{
painter.setPen(Qt::NoPen);
painter.setBrush(secondaryForegroundColor);
painter.drawRect(4 + m_cursor * m_digitWidth, 1 + m_digitHeight * 1.5, m_digitWidth - 5, m_digitHeight / 6);
}
}
else
{
for(int i = 0; i < m_text.length(); i++)
{
if (m_text[i] == m_textNew[i])
{
painter.setClipRect(1 + i * m_digitWidth, 1, m_digitWidth, m_digitHeight * 2);
painter.setPen(secondaryForegroundColor);
painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * 0.6, m_digitWidth, m_digitHeight), Qt::AlignCenter, m_text.mid(i, 1));
if ((m_text[i] != m_groupSeparator) && (m_text[i] != m_decSeparator))
{
painter.setPen(m_colorMapper.getForegroundColor());
painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * -0.7, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], true));
painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * 1.9, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], false));
}
}
else
{
int h = m_digitHeight * 0.6 + m_digitHeight * m_animationState / 2.0;
painter.setClipRect(1 + i * m_digitWidth, 1, m_digitWidth, m_digitHeight * 2);
painter.setPen(secondaryForegroundColor);
painter.drawText(QRect(1 + i * m_digitWidth, h, m_digitWidth, m_digitHeight), Qt::AlignCenter, m_text.mid(i, 1));
if ((m_text[i] != m_groupSeparator) && (m_text[i] != m_decSeparator))
{
painter.setPen(m_colorMapper.getForegroundColor());
painter.drawText(QRect(1 + i * m_digitWidth, h + m_digitHeight * -0.7, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], true));
painter.drawText(QRect(1 + i * m_digitWidth, h + m_digitHeight * 1.9, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], false));
}
}
}
}
}
void ValueDialZ::mousePressEvent(QMouseEvent* event)
{
int i;
i = (event->x() - 1) / m_digitWidth;
if (m_positiveOnly)
if ((m_text[i] == m_groupSeparator) || (m_text[i] == m_decSeparator) || (m_text[i] == QChar('+')) || (m_text[i] == QChar('-')))
{
i++;
if (i > m_numDigits + m_numThousandPoints + (m_positiveOnly ? 0 : 1))
{
return;
}
}
Qt::MouseButton mouseButton = event->button();
if (mouseButton == Qt::RightButton) // ceil value at current digit
{
if(m_cursor >= 0)
{
m_cursor = -1;
m_blinkTimer.stop();
update();
}
qint64 e = findExponent(i);
m_valueNew = (m_value / e) * e;
setValue(m_valueNew);
//qDebug("ValueDial::mousePressEvent: Qt::RightButton: i: %d e: %ll new: %ll", i, e, valueNew);
}
else if (mouseButton == Qt::LeftButton) // set cursor at current digit
{
if (qApp->autoSipEnabled())
{
QGuiApplication::inputMethod()->show();
}
m_cursor = i;
m_cursorState = true;
m_blinkTimer.start(400);
update();
}
}
void ValueDialZ::mouseMoveEvent(QMouseEvent* event)
{
int i;
i = (event->x() - 1) / m_digitWidth;
if ((i >= m_text.size()) || (m_text[i] == m_groupSeparator) || (m_text[i] == m_decSeparator)) {
i = -1;
}
if (i != m_hightlightedDigit)
{
m_hightlightedDigit = i;
update();
}
}
void ValueDialZ::wheelEvent(QWheelEvent* event)
{
int i;
i = (event->position().x() - 1) / m_digitWidth;
if ((m_text[i] != m_groupSeparator) && (m_text[i] != m_decSeparator)) {
m_hightlightedDigit = i;
} else {
return;
}
if (m_cursor >= 0)
{
m_cursor = -1;
m_blinkTimer.stop();
update();
}
if(m_animationState == 0)
{
if (!m_positiveOnly && (m_hightlightedDigit == 0))
{
m_valueNew = (-m_value < m_valueMin) ? m_valueMin : (-m_value > m_valueMax) ? m_valueMax : -m_value;
}
else
{
qint64 e = findExponent(m_hightlightedDigit);
if(event->angleDelta().y() < 0)
{
if (event->modifiers() & Qt::ShiftModifier) {
e *= 5;
} else if (event->modifiers() & Qt::ControlModifier) {
e *= 2;
}
m_valueNew = (m_value - e < m_valueMin) ? m_valueMin : m_value - e;
}
else
{
if (event->modifiers() & Qt::ShiftModifier) {
e *= 5;
} else if (event->modifiers() & Qt::ControlModifier) {
e *= 2;
}
m_valueNew = (m_value + e > m_valueMax) ? m_valueMax : m_value + e;
}
}
setValue(m_valueNew);
event->accept();
}
}
void ValueDialZ::leaveEvent(QEvent*)
{
if(m_hightlightedDigit != -1) {
m_hightlightedDigit = -1;
update();
}
}
void ValueDialZ::inputMethodEvent(QInputMethodEvent* event)
{
// Android numeric virtual keyboard sends inputMethodEvents rather than keyPressEvent for . and -.
// No + on keyboard, so use either to flip sign
if ((event->commitString() == ".") || (event->commitString() == "-"))
{
setValue(-m_value);
update();
}
}
void ValueDialZ::keyPressEvent(QKeyEvent* value)
{
if(m_cursor >= 0)
{
if((value->key() == Qt::Key_Return) || (value->key() == Qt::Key_Enter) || (value->key() == Qt::Key_Escape))
{
m_cursor = -1;
m_cursorState = false;
m_blinkTimer.stop();
update();
return;
}
}
if((m_cursor < 0) && (m_hightlightedDigit >= 0))
{
m_cursor = m_hightlightedDigit;
if ((m_text[m_cursor] == m_groupSeparator) || (m_text[m_cursor] == m_decSeparator)) {
m_cursor++;
}
if(m_cursor >= m_numDigits + m_numThousandPoints + (m_positiveOnly ? 0 : 1)) {
return;
}
m_cursorState = true;
m_blinkTimer.start(400);
update();
}
if(m_cursor < 0) {
return;
}
if ((value->key() == Qt::Key_Left) || (value->key() == Qt::Key_Backspace))
{
if(m_cursor > 0)
{
m_cursor--;
if ((m_text[m_cursor] == m_groupSeparator) || (m_text[m_cursor] == m_decSeparator)) {
m_cursor--;
}
if (m_cursor < 0) {
m_cursor++;
}
m_cursorState = true;
update();
return;
}
}
else if(value->key() == Qt::Key_Right)
{
if(m_cursor < m_numThousandPoints + m_numDigits)
{
m_cursor++;
if ((m_text[m_cursor] == m_groupSeparator) || (m_text[m_cursor] == m_decSeparator)) {
m_cursor++;
}
if(m_cursor >= m_numThousandPoints + m_numDigits + (m_positiveOnly ? 0 : 1)) {
m_cursor--;
}
m_cursorState = true;
update();
return;
}
}
else if(value->key() == Qt::Key_Up)
{
if (!m_positiveOnly && (m_cursor == 0))
{
if(m_animationState != 0) {
m_value = m_valueNew;
}
m_valueNew = (-m_value < m_valueMin) ? m_valueMin : (-m_value > m_valueMax) ? m_valueMax : -m_value;
}
else
{
qint64 e = findExponent(m_cursor);
if (value->modifiers() & Qt::ShiftModifier) {
e *= 5;
} else if (value->modifiers() & Qt::ControlModifier) {
e *= 2;
}
if(m_animationState != 0) {
m_value = m_valueNew;
}
m_valueNew = m_value + e > m_valueMax ? m_valueMax : m_value + e;
}
setValue(m_valueNew);
}
else if(value->key() == Qt::Key_Down)
{
if (!m_positiveOnly && (m_cursor == 0))
{
if(m_animationState != 0) {
m_value = m_valueNew;
}
m_valueNew = (-m_value < m_valueMin) ? m_valueMin : (-m_value > m_valueMax) ? m_valueMax : -m_value;
}
else
{
qint64 e = findExponent(m_cursor);
if (value->modifiers() & Qt::ShiftModifier) {
e *= 5;
} else if (value->modifiers() & Qt::ControlModifier) {
e *= 2;
}
if(m_animationState != 0) {
m_value = m_valueNew;
}
m_valueNew = m_value - e < m_valueMin ? m_valueMin : m_value - e;
}
setValue(m_valueNew);
}
if(value->text().length() != 1) {
return;
}
QChar c = value->text()[0];
if ((c == QChar('+')) && (m_cursor == 0) && (m_text[m_cursor] == QChar('-'))) // change sign to positive
{
setValue(-m_value);
update();
}
else if ((c == QChar('-')) && (m_cursor == 0) && (m_text[m_cursor] == QChar('+'))) // change sign to negative
{
setValue(-m_value);
update();
}
else if ((c >= QChar('0')) && (c <= QChar('9')) && (m_cursor > 0)) // digits
{
if(m_animationState != 0) {
m_value = m_valueNew;
}
int d = c.toLatin1() - '0';
quint64 e = findExponent(m_cursor);
quint64 value = abs(m_value);
int sign = m_value < 0 ? -1 : 1;
quint64 v = (value / e) % 10;
v = value - v * e;
v += d * e;
setValue(sign*v);
m_cursor++;
if ((m_text[m_cursor] == m_groupSeparator) || (m_text[m_cursor] == m_decSeparator)) {
m_cursor++;
}
if(m_cursor >= m_numDigits + m_numThousandPoints + (m_positiveOnly ? 0 : 1))
{
m_cursor = -1;
m_blinkTimer.stop();
}
else
{
m_cursorState = true;
}
update();
}
}
void ValueDialZ::focusInEvent(QFocusEvent*)
{
if(m_cursor == -1) {
m_cursor = 0;
m_cursorState = true;
m_blinkTimer.start(400);
update();
}
}
void ValueDialZ::focusOutEvent(QFocusEvent*)
{
m_cursor = -1;
m_blinkTimer.stop();
update();
}
void ValueDialZ::animate()
{
update();
if(m_animationState > 0)
m_animationState++;
else if(m_animationState < 0)
m_animationState--;
else {
m_animationTimer.stop();
m_animationState = 0;
return;
}
if(abs(m_animationState) >= 4) {
m_animationState = 0;
m_animationTimer.stop();
m_value = m_valueNew;
m_text = m_textNew;
}
}
void ValueDialZ::blink()
{
if(m_cursor >= 0) {
m_cursorState = !m_cursorState;
update();
}
}
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