Java for Android Tutorial 11

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Tutorial 11 - Printing Charts


Standard Printing

TeeChart Pro offers standard print methods to print the Onscreen Chart 'as is' to the Printer.

Simple Print command

To print a Chart use the Print method. This will print the chart as it appears onscreen.

Example

tChart1.getPrinter().print();


Print Orientation

The Print method allows you to print both Landscape and Portrait orientations, even if they are not defined as the default, by the use of the boolean landscape parameter. The default orientation will take effect again after the print is complete. Default Orientation can be changed using the Landscape property (set to true for Landscape, false for Portrait):

Example

tChart1.getPrinter().setLandscape(true);
tChart1.getPrinter().print();


Print Preview

The PrintPreview window will show you how the Chart will appear when printed. You may modify print parameters in the Print Preview window. To call PrintPreview run:

tChart1.getPrinter().preview();


Greyscale printing

When printing to Greyscale printers you should take care that the colours of the Chart are easily distinguishable when translated to shades of grey. To help, you could add Brush styles to the Chart Series to more easily distinguish Series when printed.

You can also print Grayscale Charts to color printers using the Grayscale property:

tChart1.getPrinter().setGrayscale(true);
tChart1.getPrinter().print(true);


Extended Printing methods

Printing multiple Charts

Use beginPrint() and endPrint() to send a Chart to the printer without ejecting the page; BeginPrint() and EndPrint() start and end the Printer job. More than one Chart can be sent to the same page/printer job and user custom input can be included too.

Example (Prints 2 Charts to a page):

     public void button1_actionPerformed(ActionEvent e) {

        tChart1.getPrinter().beginPrint();
        tChart1.getPrinter().print(tChart2.getChart().chart,new com.steema.teechart.Rectangle(100,10,300,200));
        tChart1.getPrinter().print(new com.steema.teechart.Rectangle(100,300,300,200));
        tChart1.getPrinter().endPrint();
}

Print previewing several Charts on one page

The Print Previewer now accepts more than one Chart. Chart positions are controlled setting the Rectangle of the Print method.

Example (Shows 2 Charts in the Print Previewer):

    public void button1_actionPerformed(ActionEvent e) {

        tChart1.getPrinter().beginPrint();
        tChart1.getPrinter().print(tChart2.getChart().chart,new com.steema.teechart.Rectangle(100,10,300,200));
        tChart1.getPrinter().print(new com.steema.teechart.Rectangle(100,300,300,200));
        tChart1.getPrinter().preview();
}

Mixing printed Chart output with other print output

Use the ChartPrint() event to mix TeeChart print output with non Chart printer output.
The following example takes the text from the TeeChart Headers and prints them on a page with two TChart objects:

    public void button1_actionPerformed(ActionEvent e) {

        tChart1.getPrinter().beginPrint();
        tChart1.getPrinter().print(tChart2.getChart().chart,new com.steema.teechart.Rectangle(100,10,300,200));
        tChart1.getPrinter().print(new com.steema.teechart.Rectangle(100,300,300,200));
        tChart1.getPrinter().endPrint();
}

    public void doChartPrint(Object sender, PrintPageEventArgs e) {
        e.drawString("Chart: " ((com.steema.teechart.printer.ChartPrintJob)sender).getChart().getHeader().getText(),
                     100,((com.steema.teechart.printer.ChartPrintJob)sender).getChart().getChartRect().getBottom() 10);
    }




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