Qt Bugs effecting Chimera 2

1. Toolbar tooltips don't go away promptly ​26669 . Mac.

1. Mouse tracking broken ​29751 . Don't get mouse motion events unless a mouse button is pressed. Wanted this to detect mouse pauses for showing atom specs. Mac.

1. Can't give command-line focus ​32914.

1. Can't give QLineEdit the focus. QLineEdit for command line does not get key strokes after its setFocus() method is called. Tests show it reports hasFocus() -> True, isActiveWindow() -> True, and isEnabled() -> True but still the QMainWindow gets the key events. The QLineEdit is wrapped in a QDockWidget. Several reports on the web of this problem with no solution described. Clicking into the QLineEdit with the mouse makes it accept key events in most but not all cases. Clicking in does not make it accept key events if it already has the focus from the setFocus() call. When it doesn't work it still has the blue highlighting indicating it has focus and has a blinking insertion cursor. It simply doesn't take key strokes. Seems like it really does have focus but simply declines to process the key events.

1. QLineEdit text color can not be set easily. Want red color for some status line warnings. Can change palette text color to change all text to new color. For coloring some text need to switch to a QTextBrowser. ​QLineEdit text color .

1. QApplication.setWindowIcon() or QWidget.setWindowIcon() does not change Mac Dock Icon, Qt 5.0.2.

1. Trackpad event handling disabled on Mac due to scrolling lag issues ​28126, ​37451 .

1. Initial qt window size will be at most 2/3 screen height ​486 (closed although not fixed). Main window doesn't respect the sizeHint and prevents me from making an initial 1024x1024 graphics area.

1. QTextBrowser opens a link to an image <a href="image.jpg">x</a> showing just binary text instead of the image. Seems it only works to link to another html file. Wanted to link thumbnail image to full size image in reply log.

1. Mac retina display support may not be working ​26795. Did not test this.

1. Clicking a line in the command history prepends a directory to the anchor if it is done after the user's guide has been shown It prepends the user's guide directory. Clearing the QTextBrowser source, history and search paths did not remedy this behavior. Put in code to work around this and strip off the prepended directory. Found no bug report on web.