Following the doc and the example provided by cno I tried making a Bar Chart but despite the tries and the tests I always fall on the same result. I am sure I either missed something or I made a mistake somewhere, maybe there is some parameter I didn't understand well like the scale
Current BarChart Code
public Form createBarChartForm()
{
XYMultipleSeriesRenderer rendererTwo
= new XYMultipleSeriesRenderer(300);
rendererTwo.setBarWidth(300);
// rendererTwo.addYTextLabel(1, "ok");
// rendererTwo.addXTextLabel(5, "Ouuhh");
rendererTwo.setXAxisMin(1, 50);
rendererTwo.setXAxisMax(5, 200);
rendererTwo.setGridColor(ColorUtil.GREEN, 10);
// rendererTwo.setDisplayValues(true);
// rendererTwo.setYAxisMin(5);
// rendererTwo.setYAxisMax(5, 10);
com.codename1.charts.models.XYMultipleSeriesDataset dataset
= new XYMultipleSeriesDataset();
XYSeries xYSeries = new XYSeries("Hi", 50);
XYSeries xYSeries2 = new XYSeries("Hello", 150);
XYSeries xYSeries3 = new XYSeries("Hola", 80);
dataset.addSeries(xYSeries);
dataset.addSeries(xYSeries2);
dataset.addSeries(xYSeries3);
com.codename1.charts.views.BarChart chart = new com.codename1.charts.views.BarChart(
dataset, rendererTwo, BarChart.Type.STACKED);
// Wrap the chart in a Component so we can add it to a form
ChartComponent c = new ChartComponent(chart);
// Create a form and show it.
Form f = new Form("Budget", new com.codename1.ui.layouts.BorderLayout());
f.add(com.codename1.ui.layouts.BorderLayout.CENTER, c);
return f;
}
Result (Always The same when no errors)
Result (Stack Overflow upload would show at the bottom right and not entierly)
I found a chart demo on cno's website and it was more than I asked for.
Link To Charts Demo
It contains demo for all charts and it's well made.
I download the git project and tested out the one I need (extracted some methods) and it works. I would say I was 50% in the way of getting there.
I apologize if this was useless as I didn't really think the website would contain demo and I just fell on the site randomly.
Related
let's say I have a bunch of pdf files that I want to migrate into a new pdf. BUT the new pdf file is a table-structured file. And the content of the pdf files should fit in the first cell of a two-column-table.
I am not sure if the approach of working with tables is correct. I am open to any other solutions. All I want is at the end some custom text at the top, followed by pdf content and a checkbox on the right side. (One per pdf content)
What I have so far:
`
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
Document doc = new Document(pdfDoc, PageSize.A4);
doc.SetMargins(0f, 0f, 18f, 18f);
PdfReader reader = new PdfReader(src);
PdfDocument srcDoc = new PdfDocument(reader);
Table table = new Table(new float[] { 2f, 1f });
PdfFormXObject imagePage = srcDoc.GetFirstPage().CopyAsFormXObject(pdfDoc);
var image = new Image(imagePage);
Cell cell = new Cell().Add(image);
cell.SetHorizontalAlignment(HorizontalAlignment.LEFT);
cell.SetVerticalAlignment(VerticalAlignment.TOP);
table.AddCell(cell);
Table checkTable = new Table(2);
Cell cellCheck1 = new Cell();
cellCheck1.SetNextRenderer(new CheckboxCellRenderer(cellCheck1, "cb1", 0));
cellCheck1.SetHeight(50);
checkTable.AddCell(cellCheck1);
Cell cellCheck2 = new Cell();
cellCheck2.SetNextRenderer(new CheckboxCellRenderer(cellCheck2, "cb2", 1));
cellCheck2.SetHeight(50);
checkTable.AddCell(cellCheck2);
table.AddCell(checkTable);
doc.Add(table);
doc.Close();`
My Problem here is that the pdf content has still its margin. Which completely spoils the design. It is so frustrating, I appreciate any help.
You say
My Problem here is that the pdf content has still its margin. Which completely spoils the design.
PDFs (usually) don't know anything about margins. Thus, you have to detect the margins of the page to import first. You can do this by parsing the page content into an event listener that keeps track of the bounding box of drawing instructions, like the TextMarginFinder. Then you can reduce the source page to those dimensions. This can be done by means of the following method:
PdfPage restrictToText(PdfPage page)
{
TextMarginFinder finder = new TextMarginFinder();
new PdfCanvasProcessor(finder).ProcessPageContent(page);
Rectangle textRect = finder.GetTextRectangle();
page.SetMediaBox(textRect);
page.SetCropBox(textRect);
return page;
}
You apply this method in your code right before you copy the page as form XObject, i.e. you replace
PdfFormXObject imagePage = srcDoc.GetFirstPage().CopyAsFormXObject(pdfDoc);
by
PdfFormXObject imagePage = restrictToText(srcDoc.GetFirstPage()).CopyAsFormXObject(pdfDoc);
This causes the Image this XObject will be embedded in to have the correct size. Unfortunately it will be somewhat mispositioned because the restricted page still has the same coordinate system as the original one, merely its crop box defines a smaller section than before. To fix this, one has to apply an offset, one has to subtract the coordinates of the lower left corner of the page crop box which has become the XObject bounding box. Thus, add after instantiating the Image the following code:
Rectangle bbox = imagePage.GetBBox().ToRectangle();
image.SetProperty(Property.LEFT, -bbox.GetLeft());
image.SetProperty(Property.BOTTOM, -bbox.GetBottom());
image.SetProperty(Property.POSITION, LayoutPosition.RELATIVE);
Now the restricted page is properly positioned in your table cell.
Beware: The TextMarginFinder (as its name indicates) determines the margins by text alone. Thus, if the page contains other contents, too, e.g. decorations like a logo, this logo is ignored and might eventually be cut out. If you want such decorations, too, in your overviews, you have to use a different margin finder class.
I seem to have an issue after upgrading iText from 2.1.7 where the PDF seems to be missing or the image has shrunk between pages.
I'm wondering if this is a known issue or if there is something that I need to set in order to fix it.
Some context:
no real calculations have been changed when switching libraries.
the general structure is that we have a Document which has a pdfTable which holds a bunch of pdfImages.
changing between landscape and portrait produces different results.
the images are scaled down so that it will fit the page.
Edit: Sorry, my application was pretty big and does a bunch of work. I had to make a simple mock version before posting the problem
Sample Code (So the numbers are just examples that I used. I basically added a 800*600 Image 5 times using landscape position. I end up seeing only 3 pages when I am expecting 5.)
Note: Using portrait page size shows all 5 but it seems that the sizes vary for some reason.
ByteArrayOutputStream baos = createTemporaryOutputStream();
Document doc = newDocument();
PdfWriter writer = newWriter(doc, baos);
writer.setViewerPreferences(PdfWriter.ALLOW_PRINTING | PdfWriter.PageLayoutSinglePage);
//create page rectangle landscape
Rectangle page = new Rectangle(PageSize.A4.rotate());
doc.setPageSize(page);
doc.setMargins((float)36.0, (float)36.0, (float)36.0, (float)36.0);
doc.open();
//create element pdf table.
PdfPTable table = new PdfPTable(new float[]{(float) 770.0});
table.setWidthPercentage(100);
table.setSplitRows(true);
table.setSplitLate(false);
table.setHeaderRows(0);
// in my case I used 5 800*600 images (same picture)
//then I loop through them and create pdfcell
//and then add it to table which then gets added to the document
List<Image> hi = (List<Image>) model.get("images");
for (Image image : hi) {
com.itextpdf.text.Image pdfImage = com.itextpdf.text.Image.getInstance(image.getBytes());
pdfImage.scalePercent((float) (0.8642384 * 100));
PdfPCell cell = new PdfPCell(pdfImage, false);
table.addCell(cell);
}
doc.add(table);
doc.close();
I use one JTextArea and JScrollBar. It has this problem when I run it and it will fill by text, I can't navigate it. i.e. when I click on arrowkey on scrolbar, nothing happen. although I write the update code for it (by using API), but it doesn't work well. What shall i do? Thanks in advance.
I show my code as bellow:
JTextArea Result_field = new JTextArea(5,10);
Result_field.setPreferredSize(new Dimension(5, 10));
JScrollPane scrollPane = new JScrollPane( Result_field );
scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
scrollPane.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS);
DefaultCaret caret = (DefaultCaret)Result_field.getCaret();
caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
PrintStream printStream = new PrintStream(new CustomOutputStreamm(Result_field));
System.setOut(printStream);
MainPanel.add(scrollPane,gbc);
I found out my problem, although we define one JTextArea or ... by the size, But after that we should determine the prefer size again.
I have a great problem with ZK charts!
I have 2 type of chart: a chart with data of the current day (so this chart is generated automatically) and a chart with data of a clicked date.
The first chart works correctely, the second not!
If I have clicked on a date, I build a graph! But it's impossible to modify the label position or name of label! And I need to modify these things. This is my graph:
<charts width="1700" style="height: 400px" type="line" model="#bind(vm.chart2)" title="">
</charts>
When I clicked I call this method:
#Command
#NotifyChange("chart2")
public ChartsModel viewGraph(#BindingParam("self") Group self){
String a = self.getLabel();//this is for passed a parameter
ServiceImpl usr = new ServiceImpl();
chart2 = usr.viewGraph(a);
return chart2;
}
viewGraph is so built:
#Override
public ChartsModel viewGraph(String data) {
//chart2 = new Charts();
chart2.setModel(LineLabelsData.setCategoryModel2(data));
chart2.getXAxis().getLabels().setRotation(180);
chart2.getYAxis().getTitle().setText("TEXT");
chart2.getTooltip().setEnabled(false);
chart2.getXAxis().getLabels().setRotation(180);
LinePlotOptions linePlotOptions =
chart2.getPlotData().getPlotOptions().getLine();
linePlotOptions.setEnableMouseTracking(false);
linePlotOptions.getDataLabels().setEnabled(true);
return chart2.getModel();
}
If I print something in this method my console view it correctely! The problem is that
chart2.getYAxis().getTitle().setText("TEXT");
does not work like
chart2.getXAxis().getLabels().setRotation(180);
How can I change that values?
To change yAxis title, you can simply call chart2.getYAxis().setTitle("title");
You may want to post your questions in ZK Forum rather than stackoverflow as our community users are experienced in ZK, and can help you quicker.
I have a pdf which include text written in Type 3 Font.
I want to get some text from it and write it into other pdf in exactly same shape.
I am using itext. Please give me a tip.
edit: I attached my code.
DocumentFont f = renderInfo.getFont();
String str = renderInfo.getText();
x = renderInfo.getBaseline().getStartPoint().get(Vector.I1);
In this code, I want to write str into x value position.
In Type 3 Font, is it work?
You can copy parts of one page to a new one using code like this:
InputStream resourceStream = getClass().getResourceAsStream("from.pdf");
PdfReader reader = new PdfReader(new FileOutputStream("from.pdf"));
Rectangle pagesize = reader.getPageSizeWithRotation(1);
Document document = new Document(pagesize);
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("areaOfFrom.pdf"));
document.open();
PdfContentByte content = writer.getDirectContent();
PdfImportedPage page = writer.getImportedPage(reader, 1);
content.saveState();
content.rectangle(0, 350, 360, 475);
content.clip();
content.newPath();
content.addTemplate(page, 0, 0);
content.restoreState();
document.close();
reader.close();
This turns your
into
Unfortunately, though, that hidden content is merely... hidden... but it is still there. You can especially mark the lines with that hidden text and try to copy&paste them.
If you want to completely remove that hidden text (or start out by merely copying the desired text), you have to inspect the content of the imported page and filter it. I'm afraid iText does not yet explicitly support something like that. It can be done using the iText lowlevel API but it is quite some work.