Stefan Seefeld wrote:
Vladimir Prus wrote:
You should never specify object size at all. The size of main window should be set the GUI library, or set as proportion of screen size.
The size of a composite graphic should be determined by negotiating the required size (range) necessary to draw the content with the size the screen (or generally, parent graphic) provides. See http://fresco.org/docs/papers/blending.pdf for a description of this process.
The answer is of course you need both... I have a widget, its an 'OK' Button - I don't care how big it is or what you measure it with, it may or may not need to scale as the pixel count of the screen is increased... If I buy a big screen I normally want to be able to put more stuff on it... but not so that the text becomes impossible to read for instance. Size is determined by font size, etc. I have another widget, its purpose is to display my streaming HD video ... it had better be exactly XxY pixels else I won't be able to control the scaling correctly. Size in this case is controlled by content which is measured in pixels. Is this a special case ... maybe, can this be done with '3D' floating point co-ordinates ... yes if you get your transforms correct, this requires knowing the viewport and a bunch of other stuff but it is do-able. Kevin -- | Kevin Wheatley, Cinesite (Europe) Ltd | Nobody thinks this | | Senior Technology | My employer for certain | | And Network Systems Architect | Not even myself |