Replies: 7 comments 4 replies
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_May have something to do with version of javafx jar files; java version fails in Processing on Windows too. I recently updated my javafx jar files in an attempt to get this stuff to run in Windows and may have shot myself in the foot. |
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No longer a problem of running the code. I finally got the latest version of py5 and py5_tools installed on my Windows 11 system (had to do everything manually). I was able to install javafx with py5_tools and now I can get a window with this code. However, now there is a new issue which is this error message: I now have a FX2D window but am not able to add anything to it. |
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I think the problem lies in py5.core.Sketch.setup as indicated in the error message: import java.awt.Canvas;
...
public void setup() {
if (success) {
PSurface surface = getSurface();
// request focus for Java2D and FX2D renderers on Windows and MacOS
if (platform == WINDOWS && (sketchRenderer().equals(JAVA2D) || sketchRenderer().equals(FX2D))) {
Canvas canvas = (Canvas) surface.getNative();
canvas.setFocusable(true);
canvas.requestFocus();
} else if (platform == MACOS && (sketchRenderer().equals(JAVA2D) || sketchRenderer().equals(FX2D) || g.isGL())) {
ThinkDifferent.activateSketchWindow();
}Proposed change: |
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Yes, I see what you are saying. Casting |
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As it turns out getting py5 to recognize 'import javafx' was not possible in my attempts. Upon looking at the code again its primary function was to setFocus on the canvas which is not really necessary in my opinion, so I deleted it and re-compiled the py5.jar according to instructions on the website and it worked. My code changes are shown below: Sketch code: import javafx
_wndW = 400
_wndH = 300
def myBtnAction(evt):
print("You hit the button.",evt)
def setup():
size(_wndW, _wndH,FX2D)
window_title("JavaFX Default Window")
canvas = get_surface().get_native()
root = canvas.getParent()
pane = javafx.scene.layout.Pane()
btn = javafx.scene.control.Button("Push Me")
btn.setLayoutX(30)
btn.setLayoutY(30)
btn.setOnAction(myBtnAction)
pane.getChildren().add(btn)
root.getChildren().add(pane)
def draw():
fill(0,0,255)
circle(200,100,100)Output on Windows 11: A DropBox link to my recompiled py5.jar is here if anyone else wants to try it: |
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The correct code change here is to modify the conditional so that it does
not include FX2D on Windows. That code is needed for JAVA2D.
For your modification, does the window get focus? Does it ever open behind
other windows?
…On Fri, Jun 20, 2025, 5:55 PM vsquared ***@***.***> wrote:
As it turns out getting py5 to recognize 'import javafx' was not possible
in my attempts. Upon looking at the code again its primary function was to
setFocus on the canvas which is not really necessary in my opinion, so I
deleted it and re-compiled py5.jar according instructions on the website
and it worked. My code changes are shown below:
//import java.awt.Canvas;
...
public void setup() {
if (success) {
PSurface surface = getSurface();
// request focus for Java2D and FX2D renderers on Windows and MacOS
if (platform == WINDOWS && (sketchRenderer().equals(JAVA2D) || sketchRenderer().equals(FX2D))) {
// Canvas canvas = (Canvas) surface.getNative();
// canvas.setFocusable(true);
// canvas.requestFocus();
} else if (platform == MACOS && (sketchRenderer().equals(JAVA2D) || sketchRenderer().equals(FX2D) || g.isGL())) {
ThinkDifferent.activateSketchWindow();
}
Sketch code:
import javafx
_wndW = 400_wndH = 300
def myBtnAction(evt):
print("You hit the button.",evt)
def setup():
size(_wndW, _wndH,FX2D)
window_title("JavaFX Default Window")
canvas = get_surface().get_native()
root = canvas.getParent()
pane = javafx.scene.layout.Pane()
btn = javafx.scene.control.Button("Push Me")
btn.setLayoutX(30)
btn.setLayoutY(30)
btn.setOnAction(myBtnAction)
pane.getChildren().add(btn)
root.getChildren().add(pane)
def draw():
fill(0,0,255)
circle(200,100,100)
Output on Windows 11:
w11.png (view on web)
<https://github.com/user-attachments/assets/81603dfe-723d-4898-beb0-4e522c895ba9>
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I just opened the demo file in Thonny on top of browser and app opened on top of Thonny: |
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If you need it for Java2D you could put the code back and remove FX2D. |
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# Uses Imported mode for py5
def setup():
size(400,400,JAVA2D)
get_surface().set_always_on_top(True)
background(209);
def draw():
fill(0,255,0)
circle(100,100,100)In my opinion asking a window component (canvas in this case) to be in focus and then expecting the window itself to be in front is not likely to work (if I'm understanding correctly). Nonetheless, you must have had some positive experience doing things this way or you wouldn't have put it in. My experience in objc is a little different. |
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I'm just curious, isn't JAVA2D the default renderer? If it is, then why is it even an option? |
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Yes, it is the default renderer. In the code I need to check if the user is using that one and not something else like P2D, etc. |
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I don't understand why this won't run in Windows11:
Error:
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