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package gui
import (
"fmt"
"image"
_ "image/gif"
_ "image/jpeg"
_ "image/png"
"os"
"path/filepath"
"fyne.io/fyne/v2"
"fyne.io/fyne/v2/canvas"
"fyne.io/fyne/v2/container"
"fyne.io/fyne/v2/widget"
)
// ImageDisplay is a custom widget for displaying images
type ImageDisplay struct {
widget.BaseWidget
container *fyne.Container
imageCanvas *canvas.Image
imageLabel *widget.Label
currentImage string
}
// NewImageDisplay creates a new image display widget
func NewImageDisplay() *ImageDisplay {
d := &ImageDisplay{}
// Create image canvas
d.imageCanvas = canvas.NewImageFromResource(nil)
d.imageCanvas.FillMode = canvas.ImageFillContain
d.imageCanvas.SetMinSize(fyne.NewSize(200, 150)) // Half the size
// Create label
d.imageLabel = widget.NewLabel("No image")
d.imageLabel.Alignment = fyne.TextAlignCenter
// Create main container - no navigation buttons here
d.container = container.NewBorder(
nil,
d.imageLabel,
nil, nil,
d.imageCanvas,
)
d.ExtendBaseWidget(d)
return d
}
// CreateRenderer implements fyne.Widget
func (d *ImageDisplay) CreateRenderer() fyne.WidgetRenderer {
return widget.NewSimpleRenderer(d.container)
}
// SetImage sets a single image to display
func (d *ImageDisplay) SetImage(imagePath string) {
if imagePath == "" {
d.Clear()
return
}
d.currentImage = imagePath
// Load image from file
file, err := os.Open(imagePath)
if err != nil {
d.imageLabel.SetText(fmt.Sprintf("Error loading image: %v", err))
return
}
defer file.Close()
img, _, err := image.Decode(file)
if err != nil {
d.imageLabel.SetText(fmt.Sprintf("Error decoding image: %v", err))
return
}
// Update canvas
d.imageCanvas.Image = img
d.imageCanvas.Refresh()
// Update label
d.imageLabel.SetText(filepath.Base(imagePath))
}
// SetImages sets multiple images but only displays the first one
func (d *ImageDisplay) SetImages(images []string) {
if len(images) > 0 {
d.SetImage(images[0])
} else {
d.Clear()
}
}
// Clear clears the display
func (d *ImageDisplay) Clear() {
d.currentImage = ""
d.imageCanvas.Image = nil
d.imageCanvas.Refresh()
d.imageLabel.SetText("No image")
}
// ResourceFromPath creates a Fyne resource from a file path
func ResourceFromPath(path string) (fyne.Resource, error) {
file, err := os.Open(path)
if err != nil {
return nil, err
}
defer file.Close()
data, err := os.ReadFile(path)
if err != nil {
return nil, err
}
return fyne.NewStaticResource(filepath.Base(path), data), nil
}
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