Function NewBitmapFromImageWithSize

bitmap.go:208–234

NewBitmapFromImageWithSize creates a bitmap with given size in native units and paints the image on it streched.

(image Image, size Size)

// NewBitmapFromImageWithSize creates a bitmap with given size in native units and paints the image on it streched.
func NewBitmapFromImageWithSize(image Image, size Size) (*Bitmap, error) {
	var disposables Disposables
	defer disposables.Treat()

	dpi := int(math.Round(float64(size.Width) / float64(image.Size().Width) * 96.0))
	bmp, err := NewBitmapWithTransparentPixelsForDPI(size, dpi)
	if err != nil {
		return nil, err
	}
	disposables.Add(bmp)

	canvas, err := NewCanvasFromImage(bmp)
	if err != nil {
		return nil, err
	}
	defer canvas.Dispose()

	canvas.dpi = dpi

	if err := canvas.DrawImageStretchedPixels(image, Rectangle{0, 0, size.Width, size.Height}); err != nil {
		return nil, err
	}

	disposables.Spare()

	return bmp, nil
}

func NewBitmapFromWindow(window Window) (*Bitmap, error) {
	hBmp, err := hBitmapFromWindow(window)