基于Qt的车载GPS监控系统（5）温度设置

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设置界面

界面的类构成

基类：SetDialog 实现子功能界面通用的共性元素，背景设置，系统标题，子功能名称，返回按钮。
派生类：AlarmDialog 实现温度上限，下限，当前值的显示与设置功能。

设置对话框头文件

#ifndef SETDIALOG_H
#define SETDIALOG_H
#include <QtGui>
#include <QDebug>
#include"dht9000.h"

class SetDialog : public QDialog
{
    Q_OBJECT
public:
    SetDialog(QWidget *parent=0);
protected:
    QLineEdit * lineTitle;
    struct st_sys_dev g_dev[1];
    QToolButton *buttonSet;
private:
    QLabel *labelBg;
};
#endif // SETDIALOG_H

设置对话框实现文件

#include "setdialog.h"
#include "dht9000.h"
#include<QtGui>
#include<QDebug>


SetDialog::SetDialog( QWidget *parent)
    : QDialog( parent)
{
    load_dev(g_dev);

    this->setWindowIcon(QPixmap( ":/images/1.png") );
    this->setWindowTitle(tr("GP9001车载GPS监控系统"));
    this->setMinimumSize(800,480);
    this->setMaximumSize(800,480);
    labelBg = new QLabel(this);
    labelBg->setGeometry(QRect(0, 0, 800, 480));
    labelBg->setPixmap(QPixmap(":/images/9001bg.jpg"));
    labelBg->setScaledContents(true);

    lineTitle = new QLineEdit(this);
    //设置显示数字字体大小
    QFont font = lineTitle->font();
    font.setPointSize(font.pointSize() + 5);

    lineTitle->setFont(font);
    lineTitle->setText(tr("系统设置"));
    lineTitle->setReadOnly(true);
    lineTitle->setAlignment(Qt::AlignHCenter|Qt::AlignVCenter);
    lineTitle->setGeometry(QRect(300, 90, 200, 35));

    buttonSet = new QToolButton(this);
    buttonSet->setGeometry(QRect(350, 360, 100, 100));
    buttonSet->setText( tr( "保存/退出" ) );
    buttonSet->setIcon( QPixmap( ":/images/5.png") );
    buttonSet->setIconSize( QPixmap( ":/images/5.png").size() );
    buttonSet->setAutoRaise( TRUE );
    buttonSet->setToolButtonStyle( Qt::ToolButtonTextUnderIcon);
    connect(buttonSet,SIGNAL(clicked()),this,SLOT(accept()));
}

温度设置头文件

ifndef ALARMDIALOG_H
#define ALARMDIALOG_H
#include "setdialog.h"

class AlarmDialog:public SetDialog
{
    Q_OBJECT
public:
    AlarmDialog(QWidget *parent = 0);
public slots:
    void saveDev();
private:
    QLabel *labTempUp;
    QSpinBox *spinTempUp;
    QSlider *slidTempUp;

    QLabel *labTempLow;
    QSpinBox *spinTempLow;
    QSlider *slidTempLow;

    QLabel *labHumiUp;
    QSpinBox *spinHumiUp;
    QSlider *slidHumiUp;
};
#endif // ALARMDIALOG_H

温度设置实现程序

#include"alarmdialog.h"

AlarmDialog::AlarmDialog(QWidget *parent)
    :SetDialog(parent)
{
    this->lineTitle->setText(tr("温度设置"));
    load_dev(g_dev);

    //设置温度上限值
    labTempUp = new QLabel(this);
    labTempUp->setText(tr("设置温度上限值："));
    labTempUp->setGeometry(QRect(200, 170, 100, 25));

    spinTempUp = new QSpinBox(this);
    spinTempUp->setRange(20,50);
    spinTempUp->setGeometry(QRect(310, 170, 60, 25));
    spinTempUp->setValue(g_dev->alarm_set.temp_upper);

    slidTempUp = new QSlider(this);
    slidTempUp->setRange(20,50);
    slidTempUp->setOrientation(Qt::Horizontal);
    slidTempUp->setGeometry(QRect(380, 170, 260, 25));
    slidTempUp->setValue(g_dev->alarm_set.temp_upper);

    connect(spinTempUp,SIGNAL(valueChanged(int)),slidTempUp,SLOT(setValue(int)));
    connect(slidTempUp,SIGNAL(valueChanged(int)),spinTempUp,SLOT(setValue(int)));
    //设置温度下限值
    labTempLow = new QLabel(this);
    labTempLow->setText(tr("设置温度下限值："));
    labTempLow->setGeometry(QRect(200, 220, 100, 25));

    spinTempLow = new QSpinBox(this);
    spinTempLow->setRange(-30,15);
    spinTempLow->setGeometry(QRect(310, 220, 60, 25));
    spinTempLow->setValue(g_dev->alarm_set.temp_lower);

    slidTempLow = new QSlider(this);
    slidTempLow->setRange(-30,15);
    slidTempLow->setOrientation(Qt::Horizontal);
    slidTempLow->setGeometry(QRect(380, 220, 260, 25));
    slidTempLow->setValue(g_dev->alarm_set.temp_lower);

    connect(spinTempLow,SIGNAL(valueChanged(int)),slidTempLow,SLOT(setValue(int)));
    connect(slidTempLow,SIGNAL(valueChanged(int)),spinTempLow,SLOT(setValue(int)));

    //设置车厢温度
    labHumiUp = new QLabel(this);
    labHumiUp->setText(tr("设置车厢温度值："));
    labHumiUp->setGeometry(QRect(200, 270, 100, 25));

    spinHumiUp = new QSpinBox(this);
    spinHumiUp->setRange(-30,20);
    spinHumiUp->setGeometry(QRect(310, 270, 60, 25));
    spinHumiUp->setValue(g_dev->alarm_set.temp);

    slidHumiUp = new QSlider(this);
    slidHumiUp->setRange(-30,20);
    slidHumiUp->setOrientation(Qt::Horizontal);
    slidHumiUp->setGeometry(QRect(380, 270, 260, 25));
    slidHumiUp->setValue(g_dev->alarm_set.temp);

    connect(spinHumiUp,SIGNAL(valueChanged(int)),slidHumiUp,SLOT(setValue(int)));
    connect(slidHumiUp,SIGNAL(valueChanged(int)),spinHumiUp,SLOT(setValue(int)));


    connect(this->buttonSet,SIGNAL(clicked()),this,SLOT(saveDev()));
}

void AlarmDialog::saveDev()
{
    g_dev->alarm_set.temp_upper = spinTempUp->value();
    g_dev->alarm_set.temp_lower = spinTempLow->value();
    g_dev->alarm_set.temp = spinHumiUp->value();

    save_dev(g_dev);
}

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