I am new to Qt and I'm trying is to create a media player with library phonon. I'm doing in here: http://doc.qt.io/qt-4.8/qt-phonon-qmusicplayer-example.html. I do not know how to present the songs on Qlabel name.
How to give name of song to on label.
In Function:
metaStateChanged(Phonon::State newState, Phonon::State /* oldState */)
Set the text of your label:
QString title = metaData.value("TITLE");
if (title == "")
title = metaInformationResolver->currentSource().fileName();
myLabel->setText(title);
And try reading the fantastic documentation that qt offers beside the examples: http://doc.qt.io/qt-4.8/index.html
Related
I have been using java 17 and I'm unable to add icons into the map as a layer. please help me.
void drawTarget(double x, double y) {
SimpleFeatureTypeBuilder builder = new SimpleFeatureTypeBuilder();
builder.setName("MyFeatureType");
builder.setCRS( DefaultGeographicCRS.WGS84 ); // set crs
builder.add("location", LineString.class); // add geometry
// build the type
SimpleFeatureType TYPE = builder.buildFeatureType();
// create features using the type defined
SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(TYPE);
// GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory();
// Coordinate[] coords =
// new Coordinate[] {new Coordinate(79,25.00), new Coordinate(x, y)};
// line = geometryFactory.createLineString(coords);
// ln = new javafx.scene.shape.Line();
FontAwesomeIcon faico = new FontAwesomeIcon();
faico.setIconName("FIGHTER_JET");
faico.setX(76);
faico.setY(25);
faico.setVisible(true);
// TranslateTransition trans = new TranslateTransition();
// trans.setNode(faico);
featureBuilder.add(faico);
SimpleFeature feature = featureBuilder.buildFeature("FeaturePoint");
DefaultFeatureCollection featureCollection = new DefaultFeatureCollection("external", TYPE);
featureCollection.add(feature); // Add feature 1, 2, 3, etc
Style style5 = SLD.createLineStyle(Color.YELLOW, 2f);
Layer layer5 = new FeatureLayer(featureCollection, style5);
map.addLayer(layer5);
// mapFrame.getMapPane().repaint();
}
I want to add a font-awesome icon to the map
Currently, your code is attempting to use an Icon as a Geometry in your feature. I'm guessing that's what isn't working since you don't say.
If you want to use an Icon to display the location of a Feature then you will need two things.
A valid geometry in your feature, probably a point (since an Icon is normally a point)
A valid Style to be used by the Renderer to draw your feature(s) on the map. Currently, you are asking for the line in your feature to be drawn using a yellow line (style5 = SLD.createLineStyle(Color.YELLOW, 2f);)
I can't really help with step 1, since I don't know where your fighter jet currently is.
For step 2 I suggest you look at the SLD resources to give you some clues of how the styling system works before going on the manual to see how GeoTools implements that.
Since you are trying to add an Icon I suggest you'd need something like:
List<GraphicalSymbol> symbols = new ArrayList<>();
symbols.add(sf.externalGraphic(svg, "svg", null)); // svg preferred
symbols.add(sf.externalGraphic(png, "png", null)); // png preferred
symbols.add(sf.mark(ff.literal("circle"), fill, stroke)); // simple circle backup plan
Expression opacity = null; // use default
Expression size = ff.literal(10);
Expression rotation = null; // use default
AnchorPoint anchor = null; // use default
Displacement displacement = null; // use default
// define a point symbolizer of a small circle
Graphic city = sf.graphic(symbols, opacity, size, rotation, anchor, displacement);
PointSymbolizer pointSymbolizer =
sf.pointSymbolizer("point", ff.property("the_geom"), null, null, city);
rule1.symbolizers().add(pointSymbolizer);
featureTypeStyle.rules().add(rule1);
But that assumes that you can convert your FontAwesomeIcon into a static representation that the renderer can draw (png, svg). If it doesn't work like that (I don't use JavaFX) then you may need to add a new MarkFactory to handle them.
I am trying to pull the Enum chosen from a dialog and assign the label to a table's column.
For example: Dialog opens and allows you to choose from:
Surface
OutOfSpec
Other
These are 0,1,2 respectively.
The user chooses OutOfSpec (the label for this is Out Of Spec), I want to put this enum's Name, or the label, into a table. The column I'm inserting into is set to be a str.
Here's the code I've tried, without success:
SysDictEnum dictEnum = new SysDictEnum(enumNum(SDILF_ScrapReasons));
reason = dialog.addField(enumStr(SDILF_ScrapReasons),"Scrap Reason");
dialog.run();
if (!dialog.closedOk())
{
info(reason.value());
return;
}
ttsBegin;
// For now, this will strip off the order ID from the summary fields.
// No longer removing the Order ID
batchAttr = PdsBatchAttributes::find(itemId, invDim.inventBatchId, "OrderId");
orders = SDILF_BreakdownOrders::find(batchAttr.PdsBatchAttribValue, true);
if (orders)
{
orders.BoxProduced -= 1;
orders.update();
}
// Adding a batch attribute that will include the reason for scrapping
select forUpdate batchAttr;
batchAttr.PdsBatchAttribId = "ScrapReason";
//batchAttr.PdsBatchAttribValue = any2str(dictEnum.index2Value(reason.value()));
batchAttr.PdsBatchAttribValue = enum2str(reason.value());
batchAttr.InventBatchId = invDim.inventBatchId;
batchAttr.ItemId = itemId;
batchAttr.insert();
Obviously this is not the whole code, but it should be enough to give the issue that I'm trying to solve.
I'm sure there is a way to get the int value and use that to assign the label, I've just not been able to figure it out yet.
EDIT
To add some more information about what I am trying to accomplish. We make our finished goods, sometimes they are out of spec or damaged when this happens we then have to scrap that finished good. When we do this we want to keep track of why it is being scrapped, but we don't want just a bunch of random reasons. I used an enum to limit the reasons. When the operator clicks the button to scrap something they will get a dialog screen pop-up that allows them to select a reason for scrapping. The code will then, eventually, put that assigned reason on that finished items batch attributes so that we can track it later in a report and have a list of all the finished goods that were scrapped and why they were scrapped.
I'm not entirely sure of your question, but I think you're just missing one of the index2[...] calls or you're not getting the return value from your dialog correctly. Just create the below as a new job, run it, make a selection of Open Order and click ok.
I don't know the difference between index2Label and index2Name.
static void Job67(Args _args)
{
Dialog dialog = new dialog();
SysDictEnum dictEnum = new SysDictEnum(enumNum(SalesStatus));
DialogField reason;
SalesStatus salesStatusUserSelection;
str label, name, symbol;
int value;
reason = dialog.addField(enumStr(SalesStatus), "SalesStatus");
dialog.run();
if (dialog.closedOk())
{
salesStatusUserSelection = reason.value();
// Label
label = dictEnum.index2Label(salesStatusUserSelection);
// Name
name = dictEnum.index2Name(salesStatusUserSelection);
// Symbol
symbol = dictEnum.index2Symbol(salesStatusUserSelection);
// Value
value = dictEnum.index2Value(salesStatusUserSelection);
info(strFmt("Label: %1; Name: %2; Symbol: %3; Value: %4", label, name, symbol, value));
}
}
I want iterate over a list of string, output the string as plain text in jupyter lab then interactively highlight a substring to get easily the start index of the substring and the length. The goal is to do a quick annotation of text and get the coordinates of the substring.
Is it easy or even possible to do something like this with jupyter notebook (lab)? If then How?
I had a look at ipywidgets but couldn't find something for this use case.
Here's an example with the RangeSlider:
import ipywidgets
input_string = 'averylongstring'
widg = ipywidgets.IntRangeSlider(
value = [0, len(input_string)],
min=0, max=len(input_string)
)
output_widg = ipywidgets.Text()
display(widg)
display(output_widg)
def chomp_string(widg):
start,end = tuple(widg['new'])
output_widg.value = input_string[start: end]
widg.observe(chomp_string, names='value')
You can implement this using jp_proxy_widgets. See the following screenshot:
Note that there are warnings about compatibility for selection protocols -- I only tested this on Chrome on a Mac. Also I don't know why the indices are off by one
(select_callback(startOffset+1, endOffset+1);)
Please see https://github.com/AaronWatters/jp_proxy_widget for more information
Edit: Here is the pastable text as requested:
import jp_proxy_widget
select_widget = jp_proxy_widget.JSProxyWidget()
txt = """
Never gonna give you up.
Never gonna let you down.
Never gonna run around and
desert you.
"""
selected_text = None
def select_callback(startOffset, endOffset):
global selected_text
selected_text = txt[startOffset: endOffset]
print ("Selected", startOffset, endOffset, repr(selected_text))
select_widget.js_init("""
// (Javascript) Add a text area.
element.empty()
$("<h3>please select text:</h3>").appendTo(element);
var textarea = $('<textarea cols="50" rows="5">' + txt + "</textarea>").appendTo(element);
// Attach a select handler that calls back to select_callback.
var select_handler = function(event) {;
var target = event.target;
var startOffset = target.selectionStart;
var endOffset = target.selectionEnd;
select_callback(startOffset+1, endOffset+1);
};
textarea[0].addEventListener('select', select_handler);
""", txt=txt, select_callback=select_callback)
# display the widget
select_widget.debugging_display()
I am trying to make point of sale terminal. I need to read read (item ID, item names, and item price) from a text file with FileChooser. Then the itemID should be listed in a comboBox. The comboBox selection should change labels and prices to the corresponding item name and item price. I believe this has to do with properties and binding but I don't understand how to use those.
I've tried creating an Items class, I tried reading the file into three arrays and then comparing the ID array item to the combobox selection and then switching the label text to the name array item with the same position.
stage.setTitle("Open Resource File");
FileChooser fileChooser = new FileChooser();
try {
FileReader reader = new
FileReader(fileChooser.showOpenDialog(stage));
Scanner scanner = new Scanner(reader);
for (int i = 0; i < 10; i++) {
itemID[i] = scanner.next();
itemName[i] = scanner.next();
itemPrice[i] = scanner.nextDouble();
}
scanner.close();
reader.close();
}
catch (Exception FileNotFoundException) {
}
Items item = new Items();
ComboBox idBox = new ComboBox();
idBox.setPromptText("Select an item");
idBox.getItems().addAll("A", "B", "C", "D", "E", "F", "G", "H", "I",
"J");
idBox.setOnAction(e -> {
item.setName(idBox.getValue().toString(), itemID, itemName);
item.setPrice(idBox.getValue().toString(), itemID, itemPrice);
nameLbl.setText(item.name.toString());
});
double quantity;
Label idLabel = new Label("Item ID: ");
Label nameLabel = new Label("Item Name: ");
Label nameLbl = new Label(item.name.toString());
Label priceLabel = new Label("Item Price: ");
Label priceLbl = new
Label(NumberFormat.getCurrencyInstance(newLocale("en",
"US")).format(item.price));
Label priceLbl = new Label("");
Program compiles and main window opens but shows error and crashes when
it tries to create the point of sales terminal window.
So there are a number of things you're going to want to look into, this isn't going to contain all the code, but it should be enough to get you going.
1) You're going to want to scan your Items into an ObservableList<Item> so that you have them in a single List to work with. At a bare minimum you can do something like this in your for:
String id = scanner.next();
String name = scanner.next();
String price = scanner.nextDouble();
items.add(new Item(id, name, price));
although you probably want to make the looping within the scanner a little more dynamic (instead of to 10) - possibly use a while loop or a different reader.
2) Now that you have your list of Items you want to use a ComboBox<Item> cbItems = new ComboBox<Item>() in order to display. You're going to have to set the cbItems.setCellFactory(...) and cbItems.setButtonFactory(...) in order to display the Id or the name in the drop down. The ObservableList you've added to can then be set to the cbItems.setItems(items) described in (1). There are a ton of SO articles on doing so, so I'll leave out the full code.
3) It's dealers choice on whether you want to use ObjectProperty<Item> or cbItems.selectedProperty() in order to bind to the text boxes that you're using. 'd suggest starting with the on change handler you're using now and setting the labels directly with item.getName() and once you've got that working move on to lblName.textProperty().bind(Bindings....).
With regards to the error, you haven't posted enough information (what the exception is, or the full code to replicate) so I can't help in that way. But if you research the items above, you should be closer.
I have a working app that draws NSAttributedStrings into a custom view. The NSAttributedStrings can included embedded images. This works on versions of macOS prior to Mojave. The app can display the strings on screen, print them, and save them to image files.
This is apparently broken under Mojave. Weirdly, printing and saving to image files still works; but on-screen, the strings display only the text and not the embedded images. Proper space is left for the images, but that space is blank.
I've tested by building a small app that shows a window with an NSTextField (a label) and a custom view. It makes a single NSAttributedString with an embedded image. It applies that string to the attributedStringValue of the label, and also calls drawInRect: on the same string in the drawRect: method of the custom view. In the label, the string is displayed correctly, image and all. But in the custom view, only the text appears, and the space where the image should be is blank.
Anybody got a clue why this is happening on Mojave but not on earlier versions of macOS?
Here is the code that makes the string (and caches it, for re-use):
static NSMutableAttributedString* sgAttrString = nil;
/*
* Creates an attributed string the first time it's called,
* then returns that same string each time it's called.
*/
+ (NSAttributedString*)getAttributedString
{
if (sgAttrString == nil)
{
NSFont* font = [NSFont fontWithName:#"Helvetica" size:24.0];
NSDictionary *attrs = #{
NSFontAttributeName: font
};
sgAttrString = [[NSMutableAttributedString alloc] initWithString:#"Daisy: " attributes:attrs];
NSImage* daisy = [NSImage imageNamed:#"daisy.png"];
[daisy setSize:NSMakeSize(24,24)];
NSTextAttachment *attachment = [[NSTextAttachment alloc] init];
// I'm aware that attachment.image is available only on macOS 10.11 and later.
// It's not an issue in my real project.
attachment.image = daisy;
NSMutableAttributedString* imageStr = [[NSMutableAttributedString alloc] init];
[imageStr setAttributedString:[NSAttributedString attributedStringWithAttachment:attachment]];
[sgAttrString appendAttributedString:imageStr];
[sgAttrString appendAttributedString: [[NSAttributedString alloc] initWithString:#" !!" attributes:attrs]];
}
return sgAttrString;
}
Here is the code that applies the string to the NSTextField:
NSAttributedString* str = [Utilities getAttributedString];
self.label.attributedStringValue = str;
And here is the code that draws the string in a custom NSView:
NSAttributedString* str = [Utilities getAttributedString];
[str drawInRect:NSMakeRect(50,50, 300, 40)];
Again, this behavior seems to occur only in Mojave! Thanks in advance for any help.