Hi all, sorry for responding my own mail.
On Tuesday 11 April 2006 21:57, Werner Hoch wrote: > I'd like to hear some comments about how to fix the rubberband relics > when zooming while drawing. > > All zooming/paning actions have the following actions: > * Save the current rubberband points (SCREENtoWORLD ...) > at the moment only start_x/y and last_x/y (second_x/y is missing) > * recalc the drawing area > * redraw all objects > * recalc the saved points (WORLDtoSCREEN ...) > * the redraw of the rubberbands << missing code > > At the moment the redraw of the rubberbands are missing. > With the next mouse-move-event a XOR-PUT to the (not existing) > rubberbands are made and the new rubberbands are drawn. > > The XOR-PUT of not existing rubberbands causes the rubberband relics. > > > I guess that implementing the redraw of the missing rubberbands is > not that easy. > Instead implementing the statment "there are no rubberbands" would be > easier. Just set every variable of the rubberband to it's "start" > value. > The "start" values are those that are in the object draw start > functions. > > For the net it would be: (o_net_start()): > last_x=second_x=start_x; > ... > > The circle needs: (o_circle_start()): > last_x=start_x; > distance=0; > ... > > Ok. Now the length of all rubberbands are zero and there are no > rubberbands on the screen. > With the next mouse-move-event the rubberbands are redrawn and > everything is fine. > > What do you think about the concept? I put the code to CVS last week. Well it is the right way to go as long as we have no elements that require more than 2 user actions (like splines). Following things should work without errors: * draw primitiv objects (line, arc, circle, net, bus, box, zoombox) * move and copy of complex objects > Do you expect bad side effects? There are some extra XOR-drawings necessary to make move and copy work. You'll may notice it if you move several large symbols and do some zooming actions. [...] > For other zooming/paning actions and objects the code doesn't work > that well. There are a lot of places where minor changes are required > to make zoom-while-drawing work completely. Tracking them will take a > while. Works for all zooming/paning actions now. See Changelog notes. Things that don't work yet: * zoom while modifying objects e.g. resize a box and zoom Rubberband errors not related to zoom/pan. Jumps between x_states: * e.g. start drawing a net while drawing a box a intermediate SELECT state is required to solve this Component placement: * zooming while component placement does not change the size of the symbol Let me know if you see any problems with the changes. regards Werner
