AndriyBas

float widthAspect = 1.0F * canvasWidth / width;
float heightAspect = 1.0F * canvasHeight / height;
// fit the smallest size
holyScale = Math.min(widthAspect, heightAspect);

AndriyBas

// map rect vertices, where destPoint and srcPoints are float[]
matrix.mapPoints(destPoints, srcPoints);

AndriyBas

boolean pointInTriangle(@NonNull PointF pt, @NonNull PointF v1,
                        @NonNull PointF v2, @NonNull PointF v3) {

    boolean b1 = crossProduct(pt, v1, v2) < 0.0f;
    boolean b2 = crossProduct(pt, v2, v3) < 0.0f;
    boolean b3 = crossProduct(pt, v3, v1) < 0.0f;

    return (b1 == b2) && (b2 == b3);
}

AndriyBas

boolean onRotate(RotateGestureDetector detector) {
    // ...
    rotationInDegrees -= detector.getRotationDegreesDelta();
}
boolean onScale(ScaleGestureDetector detector) {
    // ...
    scale += (detector.getScaleFactor() - 1.0F);
}
boolean onMove(MoveGestureDetector detector) {
    // ...

AndriyBas

// calculate params
float topLeftX = layer.getX() * canvasWidth;
float topLeftY = layer.getY() * canvasHeight;
// center - for rotation
float centerX = topLeftX + getWidth() * holyScale * 0.5F;
float centerY = topLeftY + getHeight() * holyScale * 0.5F;

float rotationInDegree = layer.getRotationInDegrees();
float scaleX = layer.getScale();
float scaleY = layer.getScale();

AndriyBas

    @NonNull
    private Bitmap createBitmap(@NonNull TextLayer textLayer, @Nullable Bitmap reuseBmp) {

        int boundsWidth = canvasWidth;

        // init params - size, color, typeface
        textPaint.setStyle(Paint.Style.FILL);
        textPaint.setTextSize(textLayer.getFont().getSize() * canvasWidth);
        textPaint.setColor(textLayer.getFont().getColor());
        textPaint.setTypeface(fontProvider.getTypeface(textLayer.getFont().getFace()));

AndriyBas

Window window = dialog.getWindow();
if (window != null) {
    // remove background
    window.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
    window.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.MATCH_PARENT);
    // remove dim
    WindowManager.LayoutParams windowParams = window.getAttributes();
    window.setDimAmount(0.0F);
    window.setAttributes(windowParams);
}

AndriyBas

class Font {
  
    // color value (ex: 0xFF00FF)
    private int color;
    // name of the font
    private String typeface;
    // size of the font, relative to parent
    private float size;
}

AndriyBas

class Layer {
    float x; // top left X
    float y; // top left Y
    float scale;
    @FloatRange(from = 0.0F, to = 360.0F)
    float rotationInDegrees;
}

AndriyBas

Keybase proof

I hereby claim:

• I am andriybas on github.
• I am andriybas (https://keybase.io/andriybas) on keybase.
• I have a public key ASABDupy0ZcakpjaI57_qPDSYqSOqNeK5PvuBebiwr2ECgo

To claim this, I am signing this object: