I have a QFormLayout with a bunch of QLineEdits. I also have a QPushButton that I want to place at the horizontal center of my dialog. This is the code
//ask for book name
le_book = new QLineEdit;
layout->addRow("Book: ", le_book);
//ask for author
le_author = new QLineEdit;
layout->addRow("Author: ", le_author);
//ask for uid
le_uid = new QLineEdit;
layout->addRow("UID: ", le_uid);
//ask for tags
fillComboBox();
//ask for quantity
sb_quantity = new QSpinBox;
layout->addRow("Quantity: ", sb_quantity);
okay = new QPushButton("Okay");
connect(okay, &QPushButton::clicked, this, &Dialog::onOkay);
//how to place this pushButton at the horizontal center
Added this code after the last comment:
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->addLayout(layout);
mainLayout->addWidget(okay, 0, Qt::AlignCenter);
this->setLayout(mainLayout);
And it worked!
Related
I'm trying to create a simple pdf multi-page document with fields in it. To do that I have a template pdf which in the code I clone this template as many times as needed in order to create the document itself.
The problem comes with inserting some data in it. The type of data I try to insert to the document is not supposed to change across the pages. Rather than that, it stays static in all pages, Like the "Pages" digit that represents the number of the pages that this document contains.
Now, Inside my template pdf I have some text fields like, for instance, "Shipper1" and "Pages". I want to be able to insert my data into this text fields so that all the pages in the document will have this values in their "Shipper1" and "Pages" fields.
My code currently does that only on the first page. It shows the data perfectly. On the other hand, when I go to another page, the data isn't shown there. It's just displays an empty field.
Here is the code where I initiate the pdf document:
static void initiatePdf() {
// Initiate a new PDF Box object and get the acro form from it
File file = new File(Constants.Paths.EMPTY_DOC)
PDDocument tempDoc
Evaluator evaluator = new Evaluator(metaHolder)
int numPages = evaluator.getNumOfPagesRequired(objects)
FieldRenamer renamer = new FieldRenamer()
PDResources res = new PDResources()
COSDictionary acroFormDict = new COSDictionary()
List<PDField> fields = []
Closure isFieldExist = {List<PDField> elements, String fieldName ->
elements.findAll{it.getFullyQualifiedName() == fieldName}.size() > 0
}
for(int i = 0; i < numPages; i++) {
tempDoc = new PDDocument().load(file)
PDDocumentCatalog docCatalog = tempDoc.getDocumentCatalog()
PDAcroForm acroForm = docCatalog.acroForm
PDPage page = (PDPage) docCatalog.getPages().get(0)
renamer.setCurrentForm(acroForm)
if(i == 0) {
res = acroForm.getDefaultResources()
acroFormDict.mergeInto(acroForm.getCOSObject())
renamer.renameFields(1)
} else
renamer.renameFields(i*10+1)
List<PDField> newFields = acroForm.fields.findAll { PDField newField ->
isFieldExist(fields, newField.getFullyQualifiedName()) == false
}
fields.addAll(newFields)
document.addPage(page)
}
PDAcroForm acroForm = new PDAcroForm(document, acroFormDict);
acroForm.setFields(fields)
acroForm.setDefaultResources(res);
document.documentCatalog.setAcroForm(acroForm)
}
A couple of things first:
metaHolder instance holds the information about all
the fields that reside inside the acro form. the info is: Field Name, Field Widget Width, Field Font and Font size
evaluator is just and instance of the Evaluator class. Its purpose is to analyze the dynamic data and decide how many pages will take to contain all that text data.
Here is where I try to populate the fields with text:
static void populateData() {
def properties = ["$Constants.Fields.SHIPPER" : "David"]
FieldPopulater populater = new FieldPopulater(document, metaHolder)
populater.populateStaticFields(properties)
}
FieldPopulater class:
package app.components
import app.StringUtils
import app.components.entities.DGObject
import app.components.entities.FieldMeta
import org.apache.pdfbox.pdmodel.PDDocument
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm
import org.apache.pdfbox.pdmodel.interactive.form.PDField
/**
* Created by David on 18/10/2016.
*/
class FieldPopulater {
PDAcroForm acroForm
FormMetaHolder metaHolder
FieldPopulater(PDDocument document, FormMetaHolder metaHolder) {
this.acroForm = document.getDocumentCatalog().acroForm
this.metaHolder = metaHolder
}
void populateStaticFields(properties) {
List<PDField> fields = []
properties.each {fieldName, data ->
FieldMeta fieldMeta = metaHolder.getMetaData(fieldName)
fields = acroForm.fields.findAll { PDField field ->
String currentName = field.getFullyQualifiedName()
char lastChar = currentName[-1]
if(Character.isDigit(lastChar)) {
currentName = currentName.substring(0,currentName.size()-1)
}
currentName == fieldName
}
if(fields.size() > 1) {
int counter = 1
String tempData = data
String currentFitData
while(tempData.isEmpty() != true) {
int maxWords = Utils.getMaxWords(tempData, fieldMeta)
currentFitData = StringUtils.getTextByWords(tempData, maxWords)
tempData = StringUtils.chopTextByWords(tempData, maxWords)
PDField field = fields.find{it.getFullyQualifiedName()[-1] == "$counter"}
field?.setValue(currentFitData)
counter++
}
} else {
PDField tempField = fields[0]
tempField.setValue(data)
}
}
}
}
The result is, in the first page, the field "Shipper" has a value of "David"
In the second page, the field "Shipper" is empty.
Here is an image. First page:
Second page:
What is the problem here?
UPDATE: I tried to add the widgets of every new acro form to the current page so that every field will a few kids widgets that will represent the field, but it still doesn't work.
// All the widgets that are associated with the fields
List<PDAnnotationWidget> widgets = acroForm.fields.collect {PDField field -> field.getWidgets().get(0)}
page.annotations.addAll(widgets)
UPDATE: I also tried to add the current widget of a field to the parent field's collection of widgets. Here is the code:
List<PDAnnotationWidget> widgets = []
// All the widgets that are associated with the fields
acroForm.fields.each {PDField field ->
PDAnnotationWidget widget = field.widgets.get(0)
// Adding the following widget to the page and to the field's list of annotation widgets
widgets.add(widget)
fields.find {it.getFullyQualifiedName() == field.getFullyQualifiedName()}?.widgets.add(widget)
}
page.annotations.addAll(widgets)
What you want is to have sereval visual representations of the same field. This is done by having several annotation widgets for such a field.
In PDF, when a field has only one annotation widget, they share a common dictionary. When it has several, the annotation widgets are in a child list of the field.
When you want several annotation widgets for one field, you need to create the annotation widgets with new PDAnnotationWidget() instead of calling field.getWidgets().get(0) and using that one. These widgets must be added to a list, and this list must be assigned to the field with setWidgets(). And for each widget you must call setRectangle() and setPage() and setParent().
An example for this is in the new CreateMultiWidgetsForm.java example. The setParent() method is not yet available in 2.0.3 (but will be in 2.0.4). In this answer, it is replaced with a call that does the same thing in a less elegant way.
public final class CreateMultiWidgetsForm
{
private CreateMultiWidgetsForm()
{
}
public static void main(String[] args) throws IOException
{
// Create a new document with 2 empty pages.
PDDocument document = new PDDocument();
PDPage page1 = new PDPage(PDRectangle.A4);
document.addPage(page1);
PDPage page2 = new PDPage(PDRectangle.A4);
document.addPage(page2);
// Adobe Acrobat uses Helvetica as a default font and
// stores that under the name '/Helv' in the resources dictionary
PDFont font = PDType1Font.HELVETICA;
PDResources resources = new PDResources();
resources.put(COSName.getPDFName("Helv"), font);
// Add a new AcroForm and add that to the document
PDAcroForm acroForm = new PDAcroForm(document);
document.getDocumentCatalog().setAcroForm(acroForm);
// Add and set the resources and default appearance at the form level
acroForm.setDefaultResources(resources);
// Acrobat sets the font size on the form level to be
// auto sized as default. This is done by setting the font size to '0'
String defaultAppearanceString = "/Helv 0 Tf 0 g";
acroForm.setDefaultAppearance(defaultAppearanceString);
// Add a form field to the form.
PDTextField textBox = new PDTextField(acroForm);
textBox.setPartialName("SampleField");
// Acrobat sets the font size to 12 as default
// This is done by setting the font size to '12' on the
// field level.
// The text color is set to blue in this example.
// To use black, replace "0 0 1 rg" with "0 0 0 rg" or "0 g".
defaultAppearanceString = "/Helv 12 Tf 0 0 1 rg";
textBox.setDefaultAppearance(defaultAppearanceString);
// add the field to the AcroForm
acroForm.getFields().add(textBox);
// Specify 1st annotation associated with the field
PDAnnotationWidget widget1 = new PDAnnotationWidget();
PDRectangle rect = new PDRectangle(50, 750, 250, 50);
widget1.setRectangle(rect);
widget1.setPage(page1);
widget1.getCOSObject().setItem(COSName.PARENT, textBox);
// Specify 2nd annotation associated with the field
PDAnnotationWidget widget2 = new PDAnnotationWidget();
PDRectangle rect2 = new PDRectangle(200, 650, 100, 50);
widget2.setRectangle(rect2);
widget2.setPage(page2);
widget2.getCOSObject().setItem(COSName.PARENT, textBox);
// set green border and yellow background for 1st widget
// if you prefer defaults, just delete this code block
PDAppearanceCharacteristicsDictionary fieldAppearance1
= new PDAppearanceCharacteristicsDictionary(new COSDictionary());
fieldAppearance1.setBorderColour(new PDColor(new float[]{0,1,0}, PDDeviceRGB.INSTANCE));
fieldAppearance1.setBackground(new PDColor(new float[]{1,1,0}, PDDeviceRGB.INSTANCE));
widget1.setAppearanceCharacteristics(fieldAppearance1);
// set red border and green background for 2nd widget
// if you prefer defaults, just delete this code block
PDAppearanceCharacteristicsDictionary fieldAppearance2
= new PDAppearanceCharacteristicsDictionary(new COSDictionary());
fieldAppearance2.setBorderColour(new PDColor(new float[]{1,0,0}, PDDeviceRGB.INSTANCE));
fieldAppearance2.setBackground(new PDColor(new float[]{0,1,0}, PDDeviceRGB.INSTANCE));
widget2.setAppearanceCharacteristics(fieldAppearance2);
List <PDAnnotationWidget> widgets = new ArrayList<PDAnnotationWidget>();
widgets.add(widget1);
widgets.add(widget2);
textBox.setWidgets(widgets);
// make sure the annotations are visible on screen and paper
widget1.setPrinted(true);
widget2.setPrinted(true);
// Add the annotations to the pages
page1.getAnnotations().add(widget1);
page2.getAnnotations().add(widget2);
// set the field value
textBox.setValue("Sample field");
document.save("MultiWidgetsForm.pdf");
document.close();
}
}
Requirement:
A large image (dynamic) needs to be split and shown in PDF pages. If image can't be accomodated in one page then we need to add another page and try to fit the remaining portion and so on.
So far I am able to split the image in multiple pages, however it appears that they are completely ignoring the margin values and so images are shown without any margins.
Please see below code:
string fileStringReplace = imageByteArray.Replace("data:image/jpeg;base64,", "");
Byte[] imageByte = Convert.FromBase64String(fileStringReplace);
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(imageByte);
float w = image.ScaledWidth;
float h = image.ScaledHeight;
float cropHeight = 1500f;
iTextSharp.text.Rectangle page = new iTextSharp.text.Rectangle(1150f, cropHeight);
var x = page.Height;
Byte[] created;
iTextSharp.text.Document document = new iTextSharp.text.Document(page, 20f, 20f, 20f, 40f); --This has no impact
using (var outputMemoryStream = new MemoryStream())
{
PdfWriter writer = PdfWriter.GetInstance(document, outputMemoryStream);
writer.CloseStream = false;
document.Open();
PdfContentByte canvas = writer.DirectContentUnder;
float usedHeights = h;
while (usedHeights >= 0)
{
usedHeights -= cropHeight;
document.SetPageSize(new iTextSharp.text.Rectangle(1150f, cropHeight));
canvas.AddImage(image, w, 0, 0, h, 0, -usedHeights);
document.NewPage();
}
document.Close();
created = outputMemoryStream.ToArray();
outputMemoryStream.Write(created, 0, created.Length);
outputMemoryStream.Position = 0;
}
return created;
I also tried to set margin in the loop by document.SetMargins() - but that's not working.
You are mixing different things.
When you create margins, be it while constructing the Document instance or by using the setMargins() method, you create margins for when you let iText(Sharp) decide on the layout. That is: the margins will be respected when you do something like document.Add(image).
However, you do not allow iText to create the layout. You create a PdfContentByte named canvas and you decide to add the image to that canvas using a transformation matrix. This means that you will calculate the a, b, c, d, e, and f value needed for the AddImage() method.
You are supposed to do that Math. If you want to see a margin, then the values w, 0, 0, h, 0, and -usedHeights are wrong, and you shouldn't blame iTextSharp, you should blame your lack of insight in analytical geometrics (that's the stuff you learn in high school at the age of 16).
This might be easier for you:
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(imageByte);
float w = image.ScaledWidth;
float h = image.ScaledHeight;
// For the sake of simplicity, I don't crop the image, I just add 20 user units
iTextSharp.text.Rectangle page = new iTextSharp.text.Rectangle(w + 20, h + 20);
iTextSharp.text.Document document = new iTextSharp.text.Document(page);
PdfWriter writer = PdfWriter.GetInstance(document, outputMemoryStream);
// Please drop the line that prevents closing the output stream!
// Why are so many people making this mistake?
// Who told you you shouldn't close the output stream???
document.Open();
// We define an absolute position for the image
// it will leave a margin of 10 to the left and to the bottom
// as we created a page that is 20 user units to wide and to high,
// we will also have a margin of 10 to the right and to the top
img.SetAbsolutePosition(10, 10);
document.Add(Image);
document.Close();
Note that SetAbsolutePosition() also lets you take control, regardless of the margins, as an alternative, you could use:
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(imageByte);
float w = image.ScaledWidth;
float h = image.ScaledHeight;
// For the sake of simplicity, I don't crop the image, I just add 20 user units
iTextSharp.text.Rectangle page = new iTextSharp.text.Rectangle(w + 20, h + 20);
iTextSharp.text.Document document = new iTextSharp.text.Document(page, 10, 10, 10, 10);
PdfWriter writer = PdfWriter.GetInstance(document, outputMemoryStream);
// Please drop the line that prevents closing the output stream!
// Why are so many people making this mistake?
// Who told you you shouldn't close the output stream???
document.Open();
// We add the image to the document, and we let iTextSharp decide where to put it
// As there is just sufficient space to fit the image inside the page, it should fit,
// But be aware of the existence of a leading; that could create side-effects
// such as forwarding the image to the next page because it doesn't fit vertically
document.Add(Image);
document.Close();
I am using Expert PDF to generate PDF from HTML.
I have to generate footer on all pages except on the first page.
I tried with:
PdfConverter pdfConverter = new PdfConverter();
AddFooter(pdfConverter);
private void AddFooter(PdfConverter pdfConverter)
{
string thisPageURL = HttpContext.Current.Request.Url.AbsoluteUri;
string headerAndFooterHtmlUrl = thisPageURL.Substring(0, thisPageURL.LastIndexOf('/')) + "/HeaderAndFooterHtml.htm";
//enable footer
pdfConverter.PdfDocumentOptions.ShowFooter = true;
// set the footer height in points
pdfConverter.PdfFooterOptions.FooterHeight = 60;
//write the page number
pdfConverter.PdfFooterOptions.TextArea = new TextArea(0, 30, "This is page &p; of &P; ",
new System.Drawing.Font(new System.Drawing.FontFamily("Times New Roman"), 10, System.Drawing.GraphicsUnit.Point));
pdfConverter.PdfFooterOptions.TextArea.EmbedTextFont = true;
pdfConverter.PdfFooterOptions.TextArea.TextAlign = HorizontalTextAlign.Right;
// set the footer HTML area
pdfConverter.PdfFooterOptions.HtmlToPdfArea = new HtmlToPdfArea(0, 0, -1, pdfConverter.PdfFooterOptions.FooterHeight,
headerAndFooterHtmlUrl, 1024, -1);
pdfConverter.PdfFooterOptions.HtmlToPdfArea.FitHeight = true;
}
but this code generate footer on all pages.
Can someone give me idea or solution for this problem?
Thanks in advance!
Add below line in your code:
pdfConverter.PdfFooterOptions.ShowOnFirstPage = false;
Below is my code to display highcharts, now in the chart goal is showed on mouse over. i want to display it as thin line:
options.series[1] = new Object();
options.series[1].name = "Goal Points";
options.series[1].data = Goallimit;
options.series[1].type = 'arearange';
options.series[1].lineWidth = 0;
options.series[1].linkedTo = ':previous';
options.series[1].color = '#A6E685';
options.series[1].fillOpacity = 0.3;
options.series[1].zIndex = 0;!
Here is Highchart image
Here is the situation. In my app I have an overlay layer that is composed of a transparent PNG. I have replaced the hitarea for the png with a 1x1 image using the following code:
[Bindable]
[Embed(source = "/assets/1x1image.png")]
private var onexonebitmapClass:Class;
private function loadCompleteHandler(event:Event):void
{
// Create the bitmap
var onexonebitmap:BitmapData = new onexonebitmapClass().bitmapData;
var bitmap:Bitmap;
bitmap = event.target.content as Bitmap;
bitmap.smoothing = true;
var _hitarea:Sprite = createHitArea(onexonebitmap, 1);
var rect:flash.geom.Rectangle = _box.toFlexRectangle(sprite.width, sprite.height);
var drawnBox:Sprite = new FlexSprite();
bitmap.width = rect.width;
bitmap.height = rect.height;
bitmap.x = -loader.width / 2;
bitmap.y = -loader.height / 2;
bitmap.alpha = _alpha;
_hitarea.alpha = 0;
drawnBox.x = rect.x + rect.width / 2;
drawnBox.y = rect.y + rect.height / 2;
// Add the bitmap as a child to the drawnBox
drawnBox.addChild(bitmap);
// Rotate the object.
drawnBox.rotation = _rotation;
// Add the drawnBox to the sprite
sprite.addChild(drawnBox);
// Set the hitarea to drawnBox
drawnBox.hitArea = _hitarea;
}
private function createHitArea(bitmapData:BitmapData, grainSize:uint = 1):Sprite
{
var _hitarea:Sprite = new Sprite();
_hitarea.graphics.beginFill(0x900000, 1.0);
for (var x:uint = 0; x < bitmapData.width; x += grainSize)
{
for (var y:uint = grainSize; y < bitmapData.height; y += grainSize)
{
if (x <= bitmapData.width && y <= bitmapData.height && bitmapData.getPixel(x, y) != 0)
{
_hitarea.graphics.drawRect(x, y, grainSize, grainSize);
}
}
}
_hitarea.graphics.endFill();
return _hitarea;
}
This is based off the work done here: Creating a hitarea for PNG Image with transparent (alpha) regions in Flex
Using the above code I am able to basically ignore the overlay layer for all mouse events (click, double click, move, etc.) However, I am unable to capture the right click (context menu) event for items that are beneath the overlay.
For instance I have a spell check component that checks the spelling on any textitem and like most other spell checkers if the word is incorrect or not in the dictionary underlines the word in red and if you right click on it would give you a list of suggestions in the contextmenu. This is working great when the text box is not under the overlay, but if the text box is under the overlay I get nothing back.
If anyone can give me some pointers on how to capture the right click event on a textItem that is under a transparent png that would be great.