fc - high-level canvas for the fyne toolkit

is created with:

package main

import (
	"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.CText(50, 25, 10, "hello, world", white)
	canvas.Image(50, 75, 200, 200, "earth.jpg")

	canvas.EndRun()
}

Introduction

There are methods for Text (begin, centered, and end aligned), Circles, Lines, Rectangles, and Images.

Percent coordinate based methods

NewCanvas makes a new canvas

NewCanvas(name string, w, h int) Canvas

EndRun shows the content and runs the app

(canvas *Canvas) EndRun()

Text places text within a container, using percent coordinates

(canvas *Canvas) Text(x, y float64, size float64, s string, color color.RGBA) {

CText places centered text using percent coordinates

(canvas *Canvas) CText(x, y float64, size float64, s string, color color.RGBA) {

EText places end-aligned text within a container, using percent coordinates

(canvas *Canvas) EText(x, y float64, size float64, s string, color color.RGBA) {

Circle places a circle within a container, using percent coordinates

(canvas *Canvas) Circle(x, y, r float64, color color.RGBA) {

Line places a line within a container, using percent coordinates

(canvas *Canvas) Line(x1, y1, x2, y2, size float64, color color.RGBA) {

Rect places a rectangle centered on (x,y) within a container, using percent coordinates

(canvas *Canvas) Rect(x, y, w, h float64, color color.RGBA) {

CornerRect places a rectangle with upper left corner on (x,y) within a container, using percent coordinates

(canvas *Canvas) CornerRect(x, y, w, h float64, color color.RGBA) {

Image places an image centered at (x, y) within a container, using percent coordinates

(canvas *Canvas) Image(x, y float64, w, h int, name string) {

Absolute methods: uses absolute coordinate system and fyne structures directly

AbsStart -- begin the application

func AbsStart(name string, w, h int) (fyne.Window, *fyne.Container)

AbsEndRun -- run the app

func AbsEnd(window fyne.Window, content *fyne.Container, w, h int) {

AbsText -- Add text at (x,y) with the specified size and color

func AbsText(c *fyne.Container, x, y int, s string, size int, color color.RGBA)

AbsTextMid -- Add Center text

func AbsTextMid(c *fyne.Container, x, y int, s string, size int, color color.RGBA)

AbsTectEnd -- Add End-Aligned text

func AbsTextEnd(c *fyne.Container, x, y int, s string, size int, color color.RGBA)

AbsLine -- Add a colored line from (x1,y1) to (x2, y2)

func AbsLine(c *fyne.Container, x1, y1, x2, y2 int, size float32, color color.RGBA)

AbsCircle --- Add a circle object centered at (x,y) with radius r

func AbsCircle(c *fyne.Container, x, y, r int, color color.RGBA)

AbsCornerRect -- Add a rectangle with (c *fyne.Container, x,y) at the upper left, with dimension (w, h)

func AbsCornerRect(c *fyne.Container, x, y, w, h int, color color.RGBA)

AbsRect -- Add a rectangle centered at (c *fyne.Container, x,y), with dimension (w, h)

func AbsRect(c *fyne.Container, x, y, w, h int, color color.RGBA)

AbsAdd an image named as name centered at (x, y) with dimensions ( w, h)

func AbsImage(c *fyne.Container, x, y, w, h int, name string)

AbsAdd an named image with upper left at (x, y) with dimensions (w, h)

func AbsCornerImage(c *fyne.Container, x, y, w, h int, name string)