kopia lustrzana https://github.com/f4exb/sdrangel
428 wiersze
12 KiB
C++
428 wiersze
12 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QPainter>
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#include <QMouseEvent>
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#include <QWheelEvent>
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#include <QKeyEvent>
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#include "gui/valuedial.h"
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ValueDial::ValueDial(QWidget* parent) :
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QWidget(parent),
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m_animationState(0)
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{
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setAutoFillBackground(false);
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setAttribute(Qt::WA_OpaquePaintEvent, true);
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setAttribute(Qt::WA_NoSystemBackground, true);
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setMouseTracking(true);
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setFocusPolicy(Qt::StrongFocus);
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m_background.setStart(0, 0);
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m_background.setFinalStop(0, 1);
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m_background.setCoordinateMode(QGradient::ObjectBoundingMode);
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m_background.setColorAt(0.0, QColor(0x40, 0x40, 0x40));
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m_background.setColorAt(0.1, QColor(0xc0, 0xc0, 0xc0));
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m_background.setColorAt(0.2, QColor(0xf0, 0xf0, 0xf0));
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m_background.setColorAt(0.5, QColor(0xff, 0xff, 0xff));
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m_background.setColorAt(0.8, QColor(0xd0, 0xd0, 0xd0));
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m_background.setColorAt(0.9, QColor(0xa0, 0xa0, 0xa0));
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m_background.setColorAt(1.0, QColor(0x40, 0x40, 0x40));
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m_value = 0;
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m_valueMin = 0;
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m_valueMax = 2200000;
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m_numDigits = 7;
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m_numDecimalPoints = m_numDigits / 3;
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m_cursor = -1;
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m_hightlightedDigit = -1;
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m_text = formatText(m_value);
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m_cursorState = false;
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connect(&m_animationTimer, SIGNAL(timeout()), this, SLOT(animate()));
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connect(&m_blinkTimer, SIGNAL(timeout()), this, SLOT(blink()));
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}
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void ValueDial::setFont(const QFont& font)
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{
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QWidget::setFont(font);
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QFontMetrics fm(font);
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m_digitWidth = fm.width('0');
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m_digitHeight = fm.ascent();
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if(m_digitWidth < m_digitHeight)
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m_digitWidth = m_digitHeight;
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setFixedWidth((m_numDigits + m_numDecimalPoints) * m_digitWidth + 2);
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setFixedHeight(m_digitHeight * 2 + 2);
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}
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void ValueDial::setValue(quint64 value)
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{
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m_valueNew = value;
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if(m_valueNew < m_valueMin)
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m_valueNew = m_valueMin;
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else if(m_valueNew > m_valueMax)
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m_valueNew = m_valueMax;
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if(m_valueNew < m_value)
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m_animationState = 1;
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else if(m_valueNew > m_value)
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m_animationState = -1;
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else return;
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m_animationTimer.start(20);
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m_textNew = formatText(m_valueNew);
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}
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void ValueDial::setValueRange(uint numDigits, quint64 min, quint64 max)
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{
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m_numDigits = numDigits;
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m_numDecimalPoints = m_numDigits / 3;
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m_valueMin = min;
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m_valueMax = max;
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if(m_value < min)
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setValue(min);
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else if(m_value > max)
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setValue(max);
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setFixedWidth((m_numDigits + m_numDecimalPoints) * m_digitWidth + 2);
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}
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quint64 ValueDial::findExponent(int digit)
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{
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quint64 e = 1;
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int d = (m_numDigits + m_numDecimalPoints) - digit;
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d = d - (d / 4) - 1;
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for(int i = 0; i < d; i++)
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e *= 10;
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return e;
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}
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QChar ValueDial::digitNeigh(QChar c, bool dir)
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{
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if(dir) {
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if(c == QChar('0'))
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return QChar('9');
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else return QChar::fromLatin1(c.toLatin1() - 1);
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} else {
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if(c == QChar('9'))
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return QChar('0');
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else return QChar::fromLatin1(c.toLatin1() + 1);
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}
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}
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QString ValueDial::formatText(quint64 value)
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{
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QString str = QString("%1").arg(value, m_numDigits, 10, QChar('0'));
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for(int i = 0; i < m_numDecimalPoints; i++)
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str.insert(m_numDigits - 3 - 3 * i, ".");
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return str;
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}
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void ValueDial::paintEvent(QPaintEvent*)
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{
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QPainter painter(this);
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painter.setPen(Qt::black);
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painter.setBrush(m_background);
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painter.drawRect(0, 0, width() - 1, height() - 1);
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painter.setPen(QColor(0x20, 0x20, 0x20));
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painter.setBrush(Qt::NoBrush);
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for(int i = 1; i < m_numDigits + m_numDecimalPoints; i++) {
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painter.setPen(QColor(0x20, 0x20, 0x20));
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painter.drawLine(1 + i * m_digitWidth, 1, 1 + i * m_digitWidth, height() - 1);
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painter.setPen(QColor(0x00, 0x00, 0x00, 0x20));
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painter.drawLine(0 + i * m_digitWidth, 1, 0 + i * m_digitWidth, height() - 1);
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painter.drawLine(2 + i * m_digitWidth, 1, 2 + i * m_digitWidth, height() - 1);
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}
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painter.setPen(QColor(0x00, 0x00, 0x00, 0x20));
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painter.drawLine(1, 1, 1, height() - 1);
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painter.drawLine(width() - 2, 1, width() - 2, height() - 1);
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if(m_hightlightedDigit >= 0) {
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painter.setPen(Qt::NoPen);
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painter.setBrush(QColor(0xff, 0x00, 0x00, 0x20));
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painter.drawRect(2 + m_hightlightedDigit * m_digitWidth, 1, m_digitWidth - 1, height() - 1);
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}
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if(m_animationState == 0) {
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for(int i = 0; i < m_text.length(); i++) {
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painter.setClipRect(1 + i * m_digitWidth, 1, m_digitWidth, m_digitHeight * 2);
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painter.setPen(QColor(0x10, 0x10, 0x10));
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painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * 0.6, m_digitWidth, m_digitHeight), Qt::AlignCenter, m_text.mid(i, 1));
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if(m_text[i] != QChar('.')) {
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painter.setPen(QColor(0x00, 0x00, 0x00));
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painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * -0.7, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], true));
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painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * 1.9, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], false));
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}
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}
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painter.setClipping(false);
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if((m_cursor >= 0) && (m_cursorState)) {
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painter.setPen(Qt::NoPen);
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painter.setBrush(QColor(0x10, 0x10, 0x10));
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painter.drawRect(4 + m_cursor * m_digitWidth, 1 + m_digitHeight * 1.5, m_digitWidth - 5, m_digitHeight / 6);
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}
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} else {
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if(m_animationState != 0) {
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for(int i = 0; i < m_text.length(); i++) {
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if(m_text[i] == m_textNew[i]) {
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painter.setClipRect(1 + i * m_digitWidth, 1, m_digitWidth, m_digitHeight * 2);
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painter.setPen(QColor(0x10, 0x10, 0x10));
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painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * 0.6, m_digitWidth, m_digitHeight), Qt::AlignCenter, m_text.mid(i, 1));
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if(m_text[i] != QChar('.')) {
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painter.setPen(QColor(0x00, 0x00, 0x00));
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painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * -0.7, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], true));
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painter.drawText(QRect(1 + i * m_digitWidth, m_digitHeight * 1.9, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], false));
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}
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} else {
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int h = m_digitHeight * 0.6 + m_digitHeight * m_animationState / 2.0;
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painter.setClipRect(1 + i * m_digitWidth, 1, m_digitWidth, m_digitHeight * 2);
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painter.setPen(QColor(0x10, 0x10, 0x10));
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painter.drawText(QRect(1 + i * m_digitWidth, h, m_digitWidth, m_digitHeight), Qt::AlignCenter, m_text.mid(i, 1));
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if(m_text[i] != QChar('.')) {
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painter.setPen(QColor(0x00, 0x00, 0x00));
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painter.drawText(QRect(1 + i * m_digitWidth, h + m_digitHeight * -0.7, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], true));
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painter.drawText(QRect(1 + i * m_digitWidth, h + m_digitHeight * 1.9, m_digitWidth, m_digitHeight), Qt::AlignCenter, digitNeigh(m_text[i], false));
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}
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}
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}
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}
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}
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}
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void ValueDial::mousePressEvent(QMouseEvent* event)
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{
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int i;
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i = (event->x() - 1) / m_digitWidth;
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if(m_text[i] == QChar('.')) {
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i++;
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if(i > m_numDigits + m_numDecimalPoints)
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return;
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}
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m_cursor = i;
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m_cursorState = true;
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m_blinkTimer.start(400);
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update();
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}
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void ValueDial::mouseMoveEvent(QMouseEvent* event)
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{
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int i;
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i = (event->x() - 1) / m_digitWidth;
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if(m_text[i] == QChar('.'))
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i = -1;
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if(i != m_hightlightedDigit) {
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m_hightlightedDigit = i;
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update();
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}
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}
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void ValueDial::wheelEvent(QWheelEvent* event)
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{
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int i;
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i = (event->x() - 1) / m_digitWidth;
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if(m_text[i] != QChar('.'))
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m_hightlightedDigit = i;
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else
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return;
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if(m_cursor >= 0) {
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m_cursor = -1;
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m_blinkTimer.stop();
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update();
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}
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quint64 e = findExponent(m_hightlightedDigit);
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if(m_animationState == 0) {
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if(event->delta() < 0) {
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if(event->modifiers() & Qt::ShiftModifier)
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e *= 5;
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if(m_value < e)
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m_valueNew = m_valueMin;
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else m_valueNew = m_value - e;
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} else {
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if(event->modifiers() & Qt::ShiftModifier)
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e *= 5;
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if(m_valueMax - m_value < e)
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m_valueNew = m_valueMax;
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else m_valueNew = m_value + e;
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}
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setValue(m_valueNew);
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emit changed(m_valueNew);
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}
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}
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void ValueDial::leaveEvent(QEvent*)
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{
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if(m_hightlightedDigit != -1) {
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m_hightlightedDigit = -1;
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update();
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}
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}
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void ValueDial::keyPressEvent(QKeyEvent* value)
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{
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if(m_cursor >= 0) {
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if((value->key() == Qt::Key_Return) || (value->key() == Qt::Key_Enter) || (value->key() == Qt::Key_Escape)) {
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m_cursor = -1;
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m_cursorState = false;
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m_blinkTimer.stop();
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update();
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return;
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}
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}
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if((m_cursor < 0) && (m_hightlightedDigit >= 0)) {
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m_cursor = m_hightlightedDigit;
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if(m_text[m_cursor] == QChar('.'))
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m_cursor++;
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if(m_cursor >= m_numDigits + m_numDecimalPoints)
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return;
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m_cursorState = true;
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m_blinkTimer.start(400);
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update();
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}
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if(m_cursor < 0)
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return;
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if((value->key() == Qt::Key_Left) || (value->key() == Qt::Key_Backspace)) {
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if(m_cursor > 0) {
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m_cursor--;
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if(m_text[m_cursor] == QChar('.'))
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m_cursor--;
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if(m_cursor < 0)
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m_cursor++;
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m_cursorState = true;
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update();
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return;
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}
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} else if(value->key() == Qt::Key_Right) {
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if(m_cursor < m_numDecimalPoints + m_numDigits) {
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m_cursor++;
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if(m_text[m_cursor] == QChar('.'))
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m_cursor++;
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if(m_cursor >= m_numDecimalPoints + m_numDigits)
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m_cursor--;
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m_cursorState = true;
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update();
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return;
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}
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} else if(value->key() == Qt::Key_Up) {
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quint64 e = findExponent(m_cursor);
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if(value->modifiers() & Qt::ShiftModifier)
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e *= 5;
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if(m_animationState != 0)
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m_value = m_valueNew;
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if(m_valueMax - m_value < e)
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m_valueNew = m_valueMax;
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else m_valueNew = m_value + e;
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setValue(m_valueNew);
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emit changed(m_valueNew);
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} else if(value->key() == Qt::Key_Down) {
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quint64 e = findExponent(m_cursor);
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if(value->modifiers() & Qt::ShiftModifier)
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e *= 5;
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if(m_animationState != 0)
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m_value = m_valueNew;
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if(m_value < e)
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m_valueNew = m_valueMin;
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else m_valueNew = m_value - e;
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setValue(m_valueNew);
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emit changed(m_valueNew);
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}
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if(value->text().length() != 1)
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return;
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QChar c = value->text()[0];
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if(c >= QChar('0') && (c <= QChar('9'))) {
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int d = c.toLatin1() - '0';
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quint64 e = findExponent(m_cursor);
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quint64 v = (m_value / e) % 10;
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if(m_animationState != 0)
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m_value = m_valueNew;
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v = m_value - v * e;
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v += d * e;
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setValue(v);
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emit changed(m_valueNew);
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m_cursor++;
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if(m_text[m_cursor] == QChar('.'))
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m_cursor++;
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if(m_cursor >= m_numDigits + m_numDecimalPoints) {
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m_cursor = -1;
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m_blinkTimer.stop();
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} else {
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m_cursorState = true;
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}
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update();
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}
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}
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void ValueDial::focusInEvent(QFocusEvent*)
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{
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if(m_cursor == -1) {
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m_cursor = 0;
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m_cursorState = true;
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m_blinkTimer.start(400);
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update();
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}
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}
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void ValueDial::focusOutEvent(QFocusEvent*)
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{
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m_cursor = -1;
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m_blinkTimer.stop();
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update();
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}
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void ValueDial::animate()
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{
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update();
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if(m_animationState > 0)
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m_animationState++;
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else if(m_animationState < 0)
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m_animationState--;
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else {
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m_animationTimer.stop();
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m_animationState = 0;
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return;
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}
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if(abs(m_animationState) >= 4) {
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m_animationState = 0;
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m_animationTimer.stop();
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m_value = m_valueNew;
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m_text = m_textNew;
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}
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}
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void ValueDial::blink()
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{
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if(m_cursor >= 0) {
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m_cursorState = !m_cursorState;
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update();
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}
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}
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