maemo.org - Talk - View Single Post - RFC: Developing a vector-based drawing library for handwriting (libpenpen)

	benlau	2010-07-29 , 10:07
	Posts: 135 \| Thanked: 375 times \| Joined on Mar 2010 @ Hong Kong	#7

Originally Posted by Venemo

Indeed.
A picture of the dialog is here:
Link
It also has an "Advanced" button for advanced color selection, and you can set an arbitrary title and default color for the dialog.
It returns a QColor instance which holds the selected color data.

Thanks!

Originally Posted by Venemo

Thanks!
If I see it correctly, all I need is a PPPaper instance, and do stuff with that?

yes. The core is PPPaper.

Moreover, Qt has two GUI framework. The first one is QWidget based , which is similar to GtkWidget , it provide a traditional way to develop GUI.

The other one is QGraphicsItem based , which is designed for 2D / 3D graphical user interface. Each item has it own transformation matrix , which is similar to Flash.

PenPen use the second one , which is more flexible , but the code to get started is a little bit complex than using widget. I am thinking about to pack a QWidget class so that it is more easy to get started.

The concept should be much clear when the demo code is ready.

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