Loading font issues...

Programming Questions

rabidvill..

in Programming Questions • 10 months ago

Receiving this error:

Display 0 does not exist, using the default display instead.

java.lang.NullPointerException

at java.io.DataInputStream.readInt(DataInputStream.java:370)

at processing.core.PFont.<init>(Unknown Source)

at processing.core.PApplet.loadFont(Unknown Source)

at REM$SlideClock.<init>(REM.java:79)

at REM.<init>(REM.java:27)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

at java.lang.reflect.Constructor.newInstance(Constructor.java:513)

at java.lang.Class.newInstance0(Class.java:355)

at java.lang.Class.newInstance(Class.java:308)

at processing.core.PApplet.runSketch(Unknown Source)

at processing.core.PApplet.main(Unknown Source)

Exception in thread "main" java.lang.RuntimeException: java.lang.RuntimeException: Could not load font SegoeUI-Light-85.vlw. Make sure that the font has been copied to the data folder of your sketch.

at processing.core.PApplet.runSketch(Unknown Source)

at processing.core.PApplet.main(Unknown Source)

Caused by: java.lang.RuntimeException: Could not load font SegoeUI-Light-85.vlw. Make sure that the font has been copied to the data folder of your sketch.

at processing.core.PApplet.die(Unknown Source)

at processing.core.PApplet.loadFont(Unknown Source)

at REM$SlideClock.<init>(REM.java:79)

at REM.<init>(REM.java:27)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

at java.lang.reflect.Constructor.newInstance(Constructor.java:513)

at java.lang.Class.newInstance0(Class.java:355)

at java.lang.Class.newInstance(Class.java:308)

... 2 more

I am running windows 8 developers edition:

here is my code:

class TestFont

{

PFont font;

{

cf = loadFont("SegoeUI-Light-85.vlw");

}

void displayMethod()

{

fill(255);

stroke(255);

textFont(cf);

text("All your base, are belong to us!!!", width/2,height/2);

}

Replies(11)

tfguy44

Re: Loading font issues...

10 months ago

Is that the entirety of your code? If so, I am not surprised you are having troubles.

First, you define a PFont variable call font, but then it is never used.

Instead, you try to use a variable cf (presumable as a PFont) which is never declared.

You also have stray curly braces in your class for no reason. Is that supposed to be a constructor?

You define this class but then never use it.

I have fixed up your code into a working example:

class TestFont {
PFont cf;
TestFont(){
cf = createFont( "Ariel", 20 );
}
void displayMethod()
{
fill(255);
textFont(cf);
textAlign(CENTER);
text("All your base, are belong to us!!!", width/2,height/2);
}
}
TestFont tf;
void setup(){
size(400,200);
tf = new TestFont();
}
void draw(){
background(0);
tf.displayMethod();
}

rabidvill..

Re: Re: Loading font issues...

10 months ago

Sorry, the "font" and "cf" was a mistake, it should read cf through the whole thing, but I noticed that you used createFont instead of loadFont, I have tried both method and still get compiler errors, and I left out the main class to keep from being to verbose.

Ne Plus Ultra

rabidvill..

Re: Loading font issues...

10 months ago

FYI, I have done this a million times but for some reason I am getting compiler errors.

Ne Plus Ultra

PhiLho

Re: Loading font issues...

10 months ago

Why is this in Library and Tools Development section? Are you working on a library?

Your loadFont() is in what is called a static initialization block: this block is run once, before the class is instantiated.
And probably before setup() is run.
But that's only when setup() is run that the data folder is known. You have the same problem when you call a loadXxx() method at the global level.
tfguy44 shows a way to do it, although the font will be loaded for each instance of the class.
Fonts are generally a global resource, so it is better to declare them globally and to init them in setup().

rabidvill..

Re: Re: Loading font issues...

10 months ago

I was going to put this in the General section, but this made more sense because of the the compiler error I keep getting.

I understand that loadFont is static, but the issue seems to be recognizing the data folder. The font is physically there(used the font creation tool) but the IDE seems to not recognize that the font is there, do you see what I saying now?

Ne Plus Ultra

rabidvill..

Re: Loading font issues...

10 months ago

The font is in the data folder, but it keeps arguing that the font needs to be created.

Ne Plus Ultra

PhiLho

Re: Loading font issues...

10 months ago

Apparently my explanations weren't clear.

Let's start at the beginning: why do you need to load the font in the class itself?

rabidvill..

Re: Re: Loading font issues...

10 months ago

Because I will be using different styles of font in other classes. I have done this many times before and it has worked, and if I rebuild this project, it will work, but when I load it again(close the sketch and re-open), I get the compiler issue.
Here is the complete code:

SlideClock sc;

int x1, x2;

{

sc = new SlideClock();

size(420, 200);

x1 = 0;

x2 = width*2/3-10;

}

void draw()

{

background(0);

smooth();

sc.hours();

sc.minutes();

sc.seconds();

sc.displayMethod(x1, height*7/12, x2, height*7/12);

}

class Alarm

{

PImage img;

String inputHours, inputMinutes;

Alarm()

{

img = loadImage("set.png");

}

void setUserHours(String input)

{

inputHours = input;

}

String getHours()

{

return inputHours;

}

void setUserMinutes(String input)

{

inputMinutes = input;

}

String getMinutes()

{

return inputMinutes;

}

void ButtonAlarm()

{

image(img,width*13/15,height*13/17);

}

class SlideClock

{

int h, m, s;

PFont cf;

SlideClock()

{

cf = loadFont("SegoeUI-Light-85.vlw");

textFont(cf);

}

int hours()

{

if (hour() > 12)

{

return h = hour() -12;

}

else

{

return h = hour();

}

int minutes()

{

return m = minute();

}

int seconds()

{

return s = second();

}

void displayMethod(int x1, int y1, int x2, int y2)

{

fill(255);

stroke(255);

textFont(cf);

text(h+":"+m+":"+s, x1, y1);

if (hour() > 12)

{

text("p.m.",x2,y2);

}

else

{

text("a.m.",x2,y2);

}

Ne Plus Ultra

PhiLho

Re: Loading font issues...

10 months ago

I am lost. I don't know what you use to paste code here, but in the first message, it seems we are missing the TextFont constructor declaration, and in your last message, the setup() declaration. Which led us on a wrong track.
You have a setup() declaration, are you? If not, it would explain (perhaps) why you have to error shown in the first message.

Anyway, if you make one instance of your class, the code is fine (with a setup()!). In cases of making lot of instances of such classes, it is better to make the references to fonts and images static, which isn't possible in Processing. So it is better to load all instances of resources (fonts, images, texts, etc.) in setup(), in global variables or arrays, and to dispatch them to the created arrays.
In your case, if you have only one or two instances, it is OK.

rabidvill..

Re: Loading font issues...

10 months ago

Thank you, and sorry again. I was actually trying to replicate the issue and copied the wrong code, the 2nd copy is actually the correct one. I figured out the issue and it has nothing to do with processing but my jre. I unistalled (32-bit) and re-installed my jdk(64-bit), because I just recently upgraded from windows 7(32-bit) to windows 8 (64-bit). Thank you again for your time and sorry for making you go on the goose chase.
Ne Plus Ultra

PhiLho

Re: Loading font issues...

10 months ago

" sorry for making you go on the goose chase"
No problem, I only hope you learned some things from our explanations.

Note: not sure what your exact problem was, but I run without problem a 32-bit JVM on a 64-bit Windows 7. I don't know for Win 8, thought, but I doubt it is different.

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