Re-sizing Shapes on Slide

Re-sizing Shapes on Slide

One of the most frequent questions asked by the Aspose.Slides for Java customers is how to re-size shapes so that when Slide size is changed the data does not cut off. This short technical tip shows how to achieve that.

To avoid shapes disorientation, each shape on the slide needs to be updated according to new slide size.

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);

If there is any table in the slide then above code would not work perfect. In that case, every cell of the table needs to be resized.

You need to use following code on your end if you need to re-size the slides with tables. Setting table width or height is a special case in shapes where you need to alter the individual row height and column width to alter the table height and width.

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);