在幻灯片上调整形状大小

在幻灯片上调整形状大小

Aspose.Slides for Java 客户最常问的问题之一是如何调整形状大小，以便在更改幻灯片大小时数据不会被截断。这条简短的技术提示展示了如何实现这一点。

为了避免形状偏离，每个形状需要根据新的幻灯片大小进行更新。

Presentation presentation = new Presentation("D:\\TestResize.ppt");
 
//Old slide size
float currentHeight = (float)presentation.getSlideSize().getSize().getHeight();
 
float currentWidth =(float)presentation.getSlideSize().getSize().getWidth();
 
//Changing slide size
presentation.getSlideSize().setType(SlideSizeType.A4Paper); 
 
 
//New slide size
float newHeight = (float)presentation.getSlideSize().getSize().getHeight();
float newWidth = (float)presentation.getSlideSize().getSize().getWidth();
 
 
float ratioHeight = newHeight / currentHeight;
float ratioWidth = newWidth / currentWidth;
 
 
for (ISlide slide : presentation.getSlides())
{
for (IShape shape : slide.getShapes())
    {
//Resize position
shape.setHeight(shape.getHeight() * ratioHeight);
shape.setWidth(shape.getWidth() * ratioWidth);
 
//Resize shape size if required 
shape.setY(shape.getY() * ratioHeight);
shape.setX(shape.getX() * ratioWidth);
 
    }
}
 
presentation.save("Test.pptx",SaveFormat.Pptx);

如果幻灯片中有任何表格，则上述代码可能无法完美执行。在这种情况下，需要调整表格的每个单元格大小。

如果您需要调整包含表格的幻灯片，请使用以下代码。设置表格的宽度或高度是形状中的一个特例，您需要更改单独行的高度和列的宽度来调整表格的高度和宽度。

Presentation presentation = new Presentation("D:\\Test.pptx");
 
//Old slide size
float currentHeight = (float) presentation.getSlideSize().getSize().getHeight();
float currentWidth = (float) presentation.getSlideSize().getSize().getWidth();
 
//Changing slide size
presentation.getSlideSize().setType(SlideSizeType.A4Paper);
//presentation.SlideSize.Orientation = SlideOrienation.Portrait;
 
//New slide size
float newHeight = (float) presentation.getSlideSize().getSize().getHeight();
float newWidth = (float) presentation.getSlideSize().getSize().getWidth();
 
 
float ratioHeight = newHeight / currentHeight;
float ratioWidth = newWidth / currentWidth;
 
for (IMasterSlide master : presentation.getMasters())
    {
 for (IShape shape : master.getShapes())
{
    //Resize position
    shape.setHeight(shape.getHeight() * ratioHeight);
    shape.setWidth(shape.getWidth() * ratioWidth);
 
    //Resize shape size if required 
    shape.setY(shape.getY() * ratioHeight);
    shape.setX(shape.getX() * ratioWidth);
 
}
 
 for (ILayoutSlide layoutslide : master.getLayoutSlides())
 {
     for (IShape shape : layoutslide.getShapes())
     {
         //Resize position
         shape.setHeight(shape.getHeight() * ratioHeight);
         shape.setWidth(shape.getWidth() * ratioWidth);
 
         //Resize shape size if required 
         shape.setY(shape.getY() * ratioHeight);
         shape.setX(shape.getX() * ratioWidth);
 
     }
 
 }
    }
 
for (ISlide slide : presentation.getSlides())
    {
for (IShape shape : slide.getShapes())
{
    //Resize position
    shape.setHeight(shape.getHeight() * ratioHeight);
    shape.setWidth(shape.getWidth() * ratioWidth);
 
    //Resize shape size if required 
    shape.setY(shape.getY() * ratioHeight);
    shape.setX(shape.getX() * ratioWidth);
    if (shape instanceof ITable)
    {
        ITable table = (ITable)shape;
     IRow row=null;
         
        for(int i=0;i<table.getRows().size();i++)
        {
            row=table.getRows().get_Item(i);
            row.setMinimalHeight(row.getMinimalHeight() * ratioHeight);
        }
        IColumn col;
        for (int j=0;j<table.getColumns().size();j++)
        {
            col=table.getColumns().get_Item(j);
            col.setWidth(col.getWidth() * ratioWidth);
 
        }
    }
 
}
    }
 
presentation.save("D:\\Test.pptx", SaveFormat.Pptx);