| TextField._x Property | Flash 6 |
| horizontal location of the text field, in pixels | read/write | Description The floating-point _x property indicates the horizontal position of theField's left border. It is measured relative to one of two possible coordinate spaces: -
If theField resides on the main timeline, _x is measured relative to the Stage's left edge. For example, an _x of 20 indicates that theField's left border is 20 pixels to the right of the Stage's left edge; -20 indicates it is 20 pixels to the left. -
If theField resides on a movie clip instance's timeline, _x is measured relative to the registration point of that parent instance. For example, an _x of 20 indicates that theField's left border is 20 pixels to the right of its parent instance's registration point; -20 indicates 20 pixels to the left. The _x property (along with all horizontal coordinates in Flash) increases to the right and decreases to the left. Fractional _x values are approximated in Flash with antialiasing (blurring). If theField is contained by an instance that is scaled and/or rotated, the coordinate space it inhabits is also scaled and/or rotated. For example, if theField's parent is scaled by 200% and rotated 90 degrees clockwise, _x increases in the downward direction, rather than to the right, and a single unit of _x is 2 pixels instead of 1. Example The following example uses the _x property to align one field to another (they share the same x-coordinate, so they are aligned along the same vertical line): // Make the first field this.createTextField("firstName_txt", 1, 250, 0, 200, 20); firstName_txt.border = true; firstName_txt.type = "input"; // Make the second field this.createTextField("lastName_txt", 2, 0, 0, 200, 20); lastName_txt.border = true; lastName_txt.type = "input"; // Align the second field lastName_txt._x = firstName_txt._x; lastName_txt._y = firstName_txt._y + firstName_txt._height + 10; The following example adds to all text fields a slideTo( ) method that moves a text field left or right to some destination at a given speed: // Method to start the slide interval TextField.prototype.slideTo = function (xPos, pixelsPerSec) { var moveAmount = pixelsPerSec/20; if (xPos < 0) { moveAmount = -moveAmount; } this.slideInterval = setInterval(this, "slide", 50, moveAmount, xPos); } // Method to move the text field TextField.prototype.slide = function (moveAmount, xPos) { this._x += moveAmount; if (Math.abs(this._x - xPos) < 1) { clearInterval(this.slideInterval); } updateAfterEvent(); } // Make the field this.createTextField("theField_txt", 1, 0, 0, 200, 20); theField_txt.border = true; theField_txt.text = "Watch me go for a ride!"; // Slide it to 500 at speed 100px/second theField_txt.slideTo(500, 100); See Also MovieClip.globalToLocal( ), MovieClip.localToGlobal( ), TextField._y |
