Problem with TextArea with scrolling

Hi all

In my application I use qml custom page (simple text editor) that have only one line with 5 buttons, second row have a textField and the rest of the screen is TextArea, nested/arranged in containers bit. Content of the text box is filled by reading text file:

I use

QTextStream in(&file);
while (!in.atEnd()) {
textHolder->setText(in.readAll().toUtf8());

But, sometimes, text is passed in a single line in the text box, even if the file contains more lines, spaces etc. I used the same code for plain program Qt and the content of the file is displayed as shown in the text file.

Following problem, after the filling of the text box visible set with input from the keyboard, the TextArea scrools automatically, but up to a certain number of lines of text (10 +-) and it borders them. I cannot scrool it up nor down. With the help of resetText() resets the content of the static text, but does not return to the top. Tried to use the ScrollView, but without success. It's preety * beep * useless.

In addition, when the virtual keyboard appears, top of TextArea overlaps the textlabel. Had no idea how to solve this problem.

I did the same thing in Qt for the PB and it works without problem, but stunts gives me headaches

Here is my qml file

import bb.cascades 1.0
import Dialog.FileBrowse 1.0
import Dialog.FileSave 1.0

Page {
   content:
   Container {
        layout: StackLayout {
        }

    //main container
    Container {
            layout: StackLayout {
                layoutDirection: LayoutDirection.LeftToRight
                bottomPadding: 5.0
                leftPadding: 5.0
                rightPadding: 5.0
                topPadding: 5.0
            }
          //  scrollMode: ScrollMode.None
            Button {
                objectName: "open"
                text: "Open"
                onClicked: {
                    filebrowseDialog.show();
                }
                attachedObjects: [
                    FileBrowseDialog {
                        id: filebrowseDialog
                        objectName: "fb"
                        multiselect: false
                        filters: [
                            "*.doc",
                            "*.txt",
                            "*.html",
                            "*.htm",
                            "*.dat",
                            "*.php",
                            "*.*"
                        ]
                        onSelectionCompleted: {
                            if (filebrowseDialog.filepaths.length > 0) {
                                labelID.text = filebrowseDialog.filepaths[0];
                                cs.on_openButton_clicked(filebrowseDialog.filepaths[0]);
                            } else {
                                labelID.text = "Nothing selected";

                            }
                        }
                        onSelectionCancelled: {
                           // labelID.text = "File open cancelled";

                           //simulator test, comment it out for release!!!
                           labelID.text = "no REAL file selected";
                           cs.on_openButton_clicked("test.txt");
                        }
                    }
                ]
            }
            Button {
                objectName: "close"
                text: "Clear"

            }
            Button {
                objectName: "save"
                text: "Save"

            }

            Button {
                objectName: "saveAs"
                text: "Save As.."
                attachedObjects: [
                                    FileSaveDialog {
                                        id: filesavedialog
                                        objectName: "fs"
                                       // filesave_filename: "test.txt"

                                        onSelectionCompleted: {
                                            labelID.text = "Saved to: " + filesavedialog.filepaths[0];
                                            cs.on_saveAsButton_clicked(filesavedialog.filepaths[0]);
                                    }
                                    }
                                ]
                                onClicked: {
                                    filesavedialog.show();
                                }
            }
            Button {
                objectName: "exit"
                text: "Exit"
            }
        }
        Container {
            leftMargin: 0.0
            layout: StackLayout {
                leftPadding: 5.0
                rightPadding: 5.0
                bottomPadding: 5.0
            }
            Label {
                id: labelID
                objectName: "documentName"
                text: ""
                layoutProperties: StackLayoutProperties {
                    verticalAlignment: VerticalAlignment.Center
                    horizontalAlignment: HorizontalAlignment.Center
                }
            }
            ScrollView { id: scrollableTextHolder scrollViewProperties.scrollMode: ScrollMode.Vertical Container { TextArea { objectName: "contentHolder" inputMode: TextAreaInputMode.Text preferredWidth: 1270.0 minWidth: 1270.0 maxWidth: 1270.0 preferredHeight: 590.0 minHeight: 590.0 //maxHeight: 2048.0 } } }
        }
    }
}

Sorry for the late reply, I've corrected the problem last night. Read the file with this

QTextStream in(&file);
textHolder->setText(in.readAll());

or this

QString line = "";
QChar theChar;
while (!in.atEnd()) {
in.operator >>(theChar);
qDebug() << "text redden(QChar): " << theChar << endl;
qDebug() << "character is(category): " << theChar.category() << endl;
line.append(theChar);
}
textHolder->setText(line);

Returns the integer values of whitespace and newline characters are OK. Problem saving the contents of the file.

Somehow QTextStream recognizes the line break characters and spaces like [QChar:eparator_Space7Unicode Zs class name] and [QChar:ther_Control10Unicode name of the class Cc] that are correct but refuses to write them to the file.

I used this to solve my problem.

QTextStream out(&file);
            for(int i=0;itext().length();++i){
                                    qDebug() << "text to be written: " << QChar(textHolder->text().at(i)) << endl;
                                    qDebug() << "character is(category): " << textHolder->text().at(i).category() << endl;
                                    if(textHolder->text().at(i).category() == 10){
                                    out << "\n";
                                    }
                                    else{
                                        out << textHolder->text().at(i);
                                    }
                                }
            out.flush();

Tags: BlackBerry Developers

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