优化一下这段代码//饼状图 QPieSeries *pie_series; pie_series = new QPieSeries(this); //定义各扇形切片的颜色 static const QStringList list_pie_color = { "#6480D6","#A1DC85","#FFAD25","#FF7777","#84D1EF","#4CB383", }; //设置数据 QList<qreal> list_data = {3.1, 3.2, 3.3, 3.4, 3.5, 3.6}; //扇形 for (int i = 0; i < list_pie_color.size(); i++) { QPieSlice* pie_slice = new QPieSlice(this); pie_slice->setLabelVisible(true); pie_slice->setValue(list_data[i]); pie_slice->setLabel(QString::number(list_data[i])); pie_slice->setColor(list_pie_color[i]); pie_slice->setLabelColor(list_pie_color[i]); pie_slice->setBorderColor(list_pie_color[i]); pie_series->append(pie_slice); } //图表视图 QChart* chart = new QChart; chart->setTitle("岩性分布统计图"); // chart->setTheme(QChart::ChartThemeDark); //标题字体 QFont font = qApp->font(); font.setBold(true); font.setPointSize(16); chart->setTitleFont(font); //加入饼图 chart->addSeries(pie_series); chart->setAnimationOptions(QChart::SeriesAnimations); //图例 chart->legend()->setAlignment(Qt::AlignBottom); chart->legend()->setBackgroundVisible(false); ui->graphicsView_type_pie->setChart(chart);

这段代码可以进行以下优化：

1. 使用列表初始化方式数据和颜色：

static const QList<qreal> list_data = {3.1, 3.2, 3.3, 3.4, 3.5, 3.6};
static const QStringList list_pie_color = {"#6480D6","#A1DC85","#FFAD25","#FF7777","#84D1EF","#4CB383"};

使用`QList<qreal>`代替`QList<double>`，并使用`QStringList`代替`QString`数组。

2. 使用范围for循环简化代码：

for (int i = 0; i < list_data.size(); i++)
{
    QPieSlice* pie_slice = new QPieSlice(this);
    pie_slice->setLabelVisible(true);
    pie_slice->setValue(list_data[i]);
    pie_slice->setLabel(QString::number(list_data[i]));
    pie_slice->setColor(list_pie_color[i]);
    pie_slice->setLabelColor(list_pie_color[i]);
    pie_slice->setBorderColor(list_pie_color[i]);
    pie_series->append(pie_slice);
}

可以将循环改为范围for循环，遍历`list_data`并使用其中的值和对应的颜色创建饼图切片。

3. 将部分代码移到初始化列表中：

QChart* chart = new QChart;
chart->setTitle("岩性分布统计图");
chart->setTitleFont(QFont(qApp->font().family(), 16, QFont::Bold));
chart->addSeries(pie_series);
chart->setAnimationOptions(QChart::SeriesAnimations);
chart->legend()->setAlignment(Qt::AlignBottom);
chart->legend()->setBackgroundVisible(false);
ui->graphicsView_type_pie->setChart(chart);

将一些操作移动到初始化列表中，使代码更简洁。

优化后的代码如下所示：

static const QList<qreal> list_data = {3.1, 3.2, 3.3, 3.4, 3.5, 3.6};
static const QStringList list_pie_color = {"#6480D6","#A1DC85","#FFAD25","#FF7777","#84D1EF","#4CB383"};

QPieSeries *pie_series = new QPieSeries(this);

for (int i = 0; i < list_data.size(); i++)
{
    QPieSlice* pie_slice = new QPieSlice(this);
    pie_slice->setLabelVisible(true);
    pie_slice->setValue(list_data[i]);
    pie_slice->setLabel(QString::number(list_data[i]));
    pie_slice->setColor(list_pie_color[i]);
    pie_slice->setLabelColor(list_pie_color[i]);
    pie_slice->setBorderColor(list_pie_color[i]);
    pie_series->append(pie_slice);
}

QChart* chart = new QChart;
chart->setTitle("岩性分布统计图");
chart->setTitleFont(QFont(qApp->font().family(), 16, QFont::Bold));
chart->addSeries(pie_series);
chart->setAnimationOptions(QChart::SeriesAnimations);
chart->legend()->setAlignment(Qt::AlignBottom);
chart->legend()->setBackgroundVisible(false);
ui->graphicsView_type_pie->setChart(chart);