According to Lars Clausen <lrclause cs uiuc edu>:
After reading <URL:http://www106.pair.com/rhp/free-software-ui.html> about user interfaces in open-source software, I would like to hear if anybody on the list knows something about user interfaces (more than just from having used a bunch). If there are any, could you point out the worst problems that Dia has in its interface? I'd like to turn some attention to that as we work towards a 1.0 release.
I think I know a little about user interface. So I'll try to give my opinion for what it is worth. First apologize if I say things that have already been told, but for the sake of consistency, I'll just tell them. The Diagram Window ================== By default, the Diagram Window should have a menu bar. Currently the option is not on by default (because I did that change and wanted it not to be intrusive...). This is a switch to set in preferences. I know that some people will argue, so let it along since at least that can be toggled. :-) Properties Dialog ----------------- it can be opened using Dialog->Property. If no object is selected this menu should be disabled. Anyway, I'll talk about how this should really work instead. The Properties dialog should act like an "instpector". A floating toolbar that changes its content upon selections. If nothing it selected, it becomes empty, but stays here. That is not the current behavior. It does not update, unless you "reopen it". That is not user friendly as you may select another object, then click apply to discover that the wrong object has been changed.... :-/ BAD. (I know, this happened to me several time, and I won't told you how frustrated I was with that). Selecting and manipulating objects ---------------------------------- Only one problem, but it is an annoyance. The middle (or right) button that is used to trigger object specific action should select before raising the menu. Because the intuitive way it point and click.... And these commands should be available from the main menu and/or the properties, because restricting to contextual menu is just not good. Contextual menus are shortcuts. Nothing more. The backspace key should be used for object deletion. The arrow keys for precise moving. Mouse selection is not always as precise as one wishes: sometimes, for smal object, it resize it instead of moving. And I haven't clicked in the handle but within the object. Menus ----- The menu "File" should have a MRU of last opened file like the toolbox "File" menu. The tools menu should be customized to show tools like in the toolbox. There should be a Window menu allowing to switch to other open diagram... I know that a window manager should be able to handle that, but. The property dialog =================== This property dialog should have tabs for object specific properties. In case of multiple selection, it should handle that and allow mixed states and changing parameter globally on the whole selection. The buttons ----------- There should be only 3 buttons: [Apply]: to apply current properties [Close]: to close the dialog without changes. This one can also be avoided as the close box for the windows does the same. [Revert]: don't save properties and revert to what the object is currently. The [OK] button is currently confusing, and since I described a non modal property "inspector", this button has no more reasons to be. Line properties --------------- Arrows: the same pictograms should be used in the properties dialog and in the toolbox... The properties dialog currently use text name for arrow types, which is not as easy to guess. Same to line styles. All --- We should have choice beetween several units for size, and for text, default should be "points". List of units: cm mm in pt Pixels (px) is unlikely to be because we don't work at pixel level in Dia... I'm sure I have other ideas and comments. Like for example having movable palettes for tools, etc. But much more sophisicated than the basic changes I talked about here. Feel free to comment. Hub
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