[TIMOB-9166] iOS: Button background image scaling issues when button height is smaller than its background image

Problem

There is a scaling issue when a button's height is set to be smaller than its background image. It appears that though the background top cap and left cap are set they are not respected when the background image is scaled. Setting the button height to be the height of the background image fixes this problem--as shown in the screenshot. This did not happen Release 1.8.2 but occurs from the head of 1.8.x branch(1.8.3) to Release 2.0.1GA2

Sample Code

{noformat} // this sets the background color of the master UIView (when there are no windows/tab groups on it) Titanium.UI.setBackgroundColor('#000'); var win1 = Titanium.UI.createWindow({ title : 'Tab 1', backgroundColor : '#fff', layout : "vertical" }); // button-background.png is 39x37 var button1 = Ti.UI.createButton({ top : 0, left : 0, height : 34, width : 106, backgroundImage : "button-background.png", backgroundTopCap:15, backgroundLeftCap:15, backgroundRepeat : false, color : "#000000", font : { "fontSize" : 14, "fontWeight" : "bold", "fontFamily" : "Helvetica Neue" }, style : Titanium.UI.iPhone.SystemButtonStyle.PLAIN, title : "106x34" }); var button2 = Ti.UI.createButton({ top : 50, left : 0, height : 37, width : 106, backgroundImage : "button-background.png", backgroundTopCap : 15, backgroundLeftCap : 15, backgroundRepeat : false, color : "#000000", font : { "fontSize" : 14, "fontWeight" : "bold", "fontFamily" : "Helvetica Neue" }, style : Titanium.UI.iPhone.SystemButtonStyle.PLAIN, title : "106x37" }); win1.add(button1); win1.add(button2); win1.open(); {noformat} The background image is also attached.