Qt 使用 kdChart 自定义甘特图
时间: 2023-07-11 15:05:29 浏览: 422
Qt使用 kdChart 库可以轻松地实现自定义甘特图。以下是一个简单的例子,演示了如何使用 kdChart 实现一个基本的甘特图:
1. 首先,需要在项目中包含 kdChart 库头文件:
```cpp
#include <kdchart/KDChartGlobal>
#include <kdchart/KDGanttChart>
```
2. 创建一个 KDGanttChart 对象,并设置其大小和标题:
```cpp
KDGantt::DateTime now = KDGantt::DateTime::currentDateTimeUtc();
KDGantt::DateTimeSpan span( KDGantt::DateTime::fromString( "2019-05-01", Qt::ISODate ),
KDGantt::DateTime::fromString( "2019-06-01", Qt::ISODate ) );
KDGantt::GanttChart gantt;
gantt.setTitle( "My Gantt Chart" );
gantt.setGeometry( 100, 100, 800, 600 );
gantt.setTimeSpan( KDGantt::DateTimeRange( span ) );
```
3. 创建一个 KDGantt::StandardItemModel 对象,并设置其列数和行数:
```cpp
KDGantt::StandardItemModel* model = new KDGantt::StandardItemModel( 0, 4, &gantt );
model->setHeaderData( 0, Qt::Horizontal, "Task" );
model->setHeaderData( 1, Qt::Horizontal, "Start" );
model->setHeaderData( 2, Qt::Horizontal, "End" );
model->setHeaderData( 3, Qt::Horizontal, "Progress" );
gantt.setModel( model );
```
4. 添加任务和进度:
```cpp
KDGantt::StandardItem* item1 = new KDGantt::StandardItem( "Task 1" );
item1->setData( now, KDGantt::StartTimeRole );
item1->setData( now.addDays( 5 ), KDGantt::EndTimeRole );
item1->setData( 0.5, KDGantt::CompletionRole );
model->appendRow( item1 );
```
5. 显示甘特图:
```cpp
gantt.show();
```
完整的示例代码如下:
```cpp
#include <QApplication>
#include <kdchart/KDChartGlobal>
#include <kdchart/KDGanttChart>
#include <kdchart/KDGanttViewItem>
#include <kdchart/KDGanttStyleOptionViewItem>
int main( int argc, char** argv )
{
QApplication app( argc, argv );
KDGantt::DateTime now = KDGantt::DateTime::currentDateTimeUtc();
KDGantt::DateTimeSpan span( KDGantt::DateTime::fromString( "2019-05-01", Qt::ISODate ),
KDGantt::DateTime::fromString( "2019-06-01", Qt::ISODate ) );
KDGantt::GanttChart gantt;
gantt.setTitle( "My Gantt Chart" );
gantt.setGeometry( 100, 100, 800, 600 );
gantt.setTimeSpan( KDGantt::DateTimeRange( span ) );
KDGantt::StandardItemModel* model = new KDGantt::StandardItemModel( 0, 4, &gantt );
model->setHeaderData( 0, Qt::Horizontal, "Task" );
model->setHeaderData( 1, Qt::Horizontal, "Start" );
model->setHeaderData( 2, Qt::Horizontal, "End" );
model->setHeaderData( 3, Qt::Horizontal, "Progress" );
gantt.setModel( model );
KDGantt::StandardItem* item1 = new KDGantt::StandardItem( "Task 1" );
item1->setData( now, KDGantt::StartTimeRole );
item1->setData( now.addDays( 5 ), KDGantt::EndTimeRole );
item1->setData( 0.5, KDGantt::CompletionRole );
model->appendRow( item1 );
gantt.show();
return app.exec();
}
```
运行以上代码,将会看到一个基本的甘特图。使用 kdChart 库,可以轻松实现更复杂的甘特图,并进行自定义样式设置。