futher "Canvas" or "CanvasObjekt" to easy draw

[MatejMagat305]

Well this is similar to #856 and #2228, but I really hope that is not duplication .......

Is your feature request related to a problem? Please describe:

The Canvas Object are little bit complication to draw picture to game like https://github.com/gonutz/prototype/blob/main/samples/screenshots/games.png

Is it possible to construct a solution with the existing API?

yes, but verry hard to render picture per pixel Image. ..............

Describe the solution you'd like to see:

two options:

1. litle modificate https://github.com/ajstarks/fc and make from this futher "Canvas" or "CanvasObjekt", ../fc is based on fyne and use NewContainerWithoutLayout and canvas.Rectangle to backround, there is isues Combining fc with fyne (proper) ajstarks/fc#2 ...
2. make futher "Canvas" or "CanvasObjekt" with similar functionality:

canvasObject.Circle(50, 0, 100, blue)
canvasObject.CText(50, 25, 10, "hello, world", white)
canvasObject.Image(50, 75, 200, 200, "earth.jpg")

Position of object inside would be relative to canvasObject position.

(edited)There is example how I was able to combinate funkcionality of .../fc and fyne:

package main

import (
	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/widget"
	"golang.org/x/image/colornames"
	"image/color"

	"github.com/ajstarks/fc"
)

func main() {
	width := 500
	height := 500
	blue := color.RGBA{0, 0, 255, 255}
	white := color.RGBA{255, 255, 255, 255}

	canvas := fc.NewCanvas("hello", width, height)

	canvas.Circle(50, 0, 100, blue)
	canvas.Rect(20, 25, 20, 40, colornames.Green)
	canvas.CText(50, 25, 10, "hello, world", white)
	canvas.Image(50, 75, 200, 200, "earth.jpg")

	window := createWindow(canvas)
	window.ShowAndRun()
}

func createWindow(c fc.Canvas) fyne.Window {
	w := c.Window
	w.Resize(fyne.NewSize(float32(c.Width), float32(c.Height)))
	w.SetFixedSize(true)
	w.SetPadded(false)
	hello := widget.NewLabel("Hello Fyne!")
	w.SetContent(container.NewVBox(
		hello,
		widget.NewButton("Hi!", func() {
			hello.SetText("Welcome :)")
		}),
		c.Container,
	))
	return w
}

it is good library, but it would be better to embed it .........

[MatejMagat305]

maybe change constructor and it is ordinary "CanvasObject" without hard work .................

[andydotxyz]

If you wish to render a pixel-specific image please use canvas.Raster - everything else is scaled according to device and user preference.

[andydotxyz]

I’m not sure what this is asking for - everything illustrated is already possible

[Jacalz]

I read it as wishing to have something like what Java Swing does where you can do something like g2d.drawCircle() (and so on) to draw things directly on a canvas without needing to add things into a container. Each time you repaint (or refresh in our case) the canvas, you draw on a clean canvas instead of drawing more things in the old one. Do I understand that correctly?

[MatejMagat305]

@Jacalz yes, something like Java Swing or JavaFX ..........

[MatejMagat305]

i M REALY SORRY above is not clear..........., the point is: there is library fc based on fyne, which has functionality similar Java Swing or JavaFX and it would be awesome to embed this like futher CanvasObject, above mention issues (and my experiment) show it behave similar (if not equal) like CanvasObject so why not ...., of course there are some useles redundancy, but I think after small modification ................

[andydotxyz]

I think fc does implement CanvasObject, so you can use it as described.
I don’t think that including it in Fyne core makes sense - the main API is a retained mode toolkit to build user applications. Graphical libraries like that and other can embed CanvasObject or Go Image component to mix modalities if you want - as you demonstrated already.

[Jacalz]

Indeed. If you think fc should integrate better with Fyne, then you probably should open an issue with them instead :)