Aspose.Slides FOSS
Java
开发者指南
Connectors

使用连接器 — Aspose.Slides FOSS for Java

连接线是用线条在视觉上链接两个其他形状的形状。Aspose.Slides FOSS for Java 支持弯曲、直线和曲线连接线。形状上的连接点通过整数 connection site indexes 进行标识。

连接站点索引

每个形状公开四个标准连接点：

索引侧面
0顶部
1左侧
2底部
3右侧

在两个形状之间添加弯曲连接线 

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ShapeType;
import org.aspose.slides.foss.export.SaveFormat;

try (Presentation prs = new Presentation()) {
    var slide = prs.getSlides().get(0);

    // Create two shapes to connect
    var box1 = slide.getShapes().addAutoShape(ShapeType.RECTANGLE, 50, 150, 150, 60);
    box1.addTextFrame("Start");

    var box2 = slide.getShapes().addAutoShape(ShapeType.RECTANGLE, 400, 150, 150, 60);
    box2.addTextFrame("End");

    // Add a bent connector (position/size are ignored once connected)
    var conn = slide.getShapes().addConnector(ShapeType.BENT_CONNECTOR3, 0, 0, 10, 10);

    // Connect right side of box1 to left side of box2
    conn.setStartShapeConnectedTo(box1);
    conn.setStartShapeConnectionSiteIndex(3);   // right
    conn.setEndShapeConnectedTo(box2);
    conn.setEndShapeConnectionSiteIndex(1);     // left

    prs.save("connector.pptx", SaveFormat.PPTX);
}

连接器形状类型

ShapeTypeDescription
ShapeType.BENT_CONNECTOR3两个 90 度弯（最常用于流程图式图表）
ShapeType.BENT_CONNECTOR2一个 90 度弯
ShapeType.BENT_CONNECTOR4三个 90 度弯
ShapeType.STRAIGHT_CONNECTOR1直接的直线
ShapeType.CURVED_CONNECTOR2单个平滑曲线
ShapeType.CURVED_CONNECTOR3双弯曲线

从上到下的连接 

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ShapeType;
import org.aspose.slides.foss.export.SaveFormat;

try (Presentation prs = new Presentation()) {
    var slide = prs.getSlides().get(0);

    var top = slide.getShapes().addAutoShape(ShapeType.RECTANGLE, 250, 80, 200, 60);
    top.addTextFrame("Decision");

    var bottom = slide.getShapes().addAutoShape(ShapeType.RECTANGLE, 250, 300, 200, 60);
    bottom.addTextFrame("Action");

    var conn = slide.getShapes().addConnector(ShapeType.BENT_CONNECTOR3, 0, 0, 10, 10);
    conn.setStartShapeConnectedTo(top);
    conn.setStartShapeConnectionSiteIndex(2);    // bottom of top box
    conn.setEndShapeConnectedTo(bottom);
    conn.setEndShapeConnectionSiteIndex(0);      // top of bottom box

    prs.save("vertical-connector.pptx", SaveFormat.PPTX);
}

带有多个连接器的流程图 

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ShapeType;
import org.aspose.slides.foss.export.SaveFormat;
import org.aspose.slides.foss.IAutoShape;
import org.aspose.slides.foss.ISlide;

try (Presentation prs = new Presentation()) {
    var slide = prs.getSlides().get(0);

    var start = addBox(slide, "Start", 260, 60);
    var process = addBox(slide, "Process Data", 260, 180);
    var end = addBox(slide, "End", 260, 300);

    connect(slide, start, 2, process, 0);    // start -> process (bottom to top)
    connect(slide, process, 2, end, 0);      // process -> end (bottom to top)

    prs.save("flowchart.pptx", SaveFormat.PPTX);
}

static IAutoShape addBox(ISlide slide, String text, float x, float y) {
    var s = slide.getShapes().addAutoShape(ShapeType.RECTANGLE, x, y, 160, 50);
    s.addTextFrame(text);
    return s;
}

static void connect(ISlide slide, IAutoShape s1, int site1, IAutoShape s2, int site2) {
    var conn = slide.getShapes().addConnector(ShapeType.BENT_CONNECTOR3, 0, 0, 10, 10);
    conn.setStartShapeConnectedTo(s1);
    conn.setStartShapeConnectionSiteIndex(site1);
    conn.setEndShapeConnectedTo(s2);
    conn.setEndShapeConnectionSiteIndex(site2);
}

格式化连接器

连接线支持与其他形状相同的 getLineFormat() 属性：

import org.aspose.slides.foss.Presentation;
import org.aspose.slides.foss.ShapeType;
import org.aspose.slides.foss.LineDashStyle;
import org.aspose.slides.foss.drawing.Color;
import org.aspose.slides.foss.export.SaveFormat;

try (Presentation prs = new Presentation()) {
    var slide = prs.getSlides().get(0);
    var box1 = slide.getShapes().addAutoShape(ShapeType.RECTANGLE, 50, 150, 150, 60);
    var box2 = slide.getShapes().addAutoShape(ShapeType.RECTANGLE, 400, 150, 150, 60);

    var conn = slide.getShapes().addConnector(ShapeType.BENT_CONNECTOR3, 0, 0, 10, 10);
    conn.setStartShapeConnectedTo(box1);
    conn.setStartShapeConnectionSiteIndex(3);
    conn.setEndShapeConnectedTo(box2);
    conn.setEndShapeConnectionSiteIndex(1);

    // Style the connector line
    conn.getLineFormat().setWidth(2.5);
    conn.getLineFormat().setDashStyle(LineDashStyle.DASH);
    conn.getLineFormat().getFillFormat().getSolidFillColor().setColor(Color.fromArgb(0, 0, 139));

    prs.save("styled-connector.pptx", SaveFormat.PPTX);
}

另请参见

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