54a56cd3c6
various changes to get independent scrolling to work better in canvas. mostly tweaks relating to how scroll offsets are used during rendering.
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Event handling offsets still require work.
2014-06-03 16:12:00 -04:00
bf7b35388b
rationalize and centralize computation of positional offset and scroll offset for canvas items
2014-06-03 16:11:24 -04:00
6019f06bdf
different approach to independent scrolling, involving ArdourCanvas::ScrollGroup
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The idea now is that a scroll group item can be added to the canvas which will causes its children to scroll in either or both
directions (horizontal or vertical). There are few complications: the position() of the ScrollGroup is ambiguous depending
on whether you want it with scroll taken into account or not, so Item::canvas_position() was added, which defaults to
the same value as Item::position() but is overridden by ScrollGroup to return the position independent of scrolling. This
method is used when translating between item/canvas/window coordinate systems.
Note that the basic idea is that we MOVE the scroll group when a scroll happens. This mirrors what happens in the GnomeCanvas,
where Nick Mainsbridge came up with a great idea that allowed unification of the time bar and track canvases.
2014-06-03 16:10:27 -04:00
97109672c7
initial redesign of canvas scrolling to facilitate independent x- and y-axis scrolling of specific groups within the canvas.
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This commit should cause no change in behaviour, but contains all the code and changes necessary
for the next step
2014-06-03 16:09:06 -04:00
fed5599baa
smooth visual curve drawing
2014-05-30 03:04:02 +02:00
e5802bdbea
move an assert to cover only cases where it is needed
2014-03-07 11:23:22 -05:00
dde4d3bbc3
only queue an item redraw from Item::show() or Item::Hide() if the call changes the visibility status of the item (i.e. make no-ops really be no-ops)
2014-03-04 21:58:17 -05:00
79d2a686ff
make Item::set_position() do nothing if the position doesn't change
2014-02-13 18:18:19 -05:00
6473cc7cb4
drop use of bounding box to determine whether an item covers a point; add Item::covers(Duple const&)
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Default implementation for Item still uses bounding box, but specializations for Arc (Circle), Polygon, Line and PolyLine have been added
2013-11-04 11:56:10 -05:00
7bbd28aa08
notable changes to try to improve most of enter/leave handling for canvas items
2013-10-30 23:36:30 -04:00
5ebc4a99be
don't request redraw of a Canvas item if it marked invisible
2013-10-25 13:29:23 -04:00
ecd29c6d70
add Item::redraw() convenience method
2013-10-24 17:54:54 -04:00
37743ea9b1
minor fixes for recent cairocanvas work so that it builds on OS X (64bit)
2013-07-01 12:04:02 -04:00
77f5f4c4bf
basically operational switch to canvas drawing coordinates, although text and waves don't work, and redraw areas are too small
2013-06-18 08:23:06 -04:00
737433c446
tweaks to improve enter/leave event handling - fixes at least some crashes caused by this stuff
2013-04-24 18:31:00 -04:00
b36e085001
add back change lost during branch merging
2013-04-21 18:57:55 -04:00
b02a7445bf
Revert "add Group::clear(), do not clear _canvas member of Item when unparented (only the parent is changed)"
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This reverts commit a4df65a56f83823aba27432685977f420458a213.
2013-04-21 15:35:20 -04:00
fca81c9a6a
add Group::clear(), do not clear _canvas member of Item when unparented (only the parent is changed)
2013-04-21 15:35:20 -04:00
d1a05240ef
fix clamping of line and rect coordinates to avoid issues with cairo when drawing way outside a surface's dimensions; move various coordinate methods down to Canvas, because they don't require GTK information; make visible_area() a Canvas virtual method so that we don't have to cast to call it
2013-04-17 10:53:17 -04:00
c1df3295c1
virtual Fill:: and Outline:: methods so that Canvas::Items that cache image renderings of themselves can invalidate those caches when colors etc. change; add Item::{begin,end}_visual_change() so that we can notify the canvas more efficiently when *only* visual properties have changed and not the bounding box (probably needs to be used more widely)
2013-04-16 20:38:10 -04:00
37dd7e952b
add headers to all canvas .cc and .h files
2013-04-15 22:10:18 -04:00
64d3763652
remove all xml++.h inclusion by canvas implementations
2013-04-15 22:00:13 -04:00
84fb0a8dce
remove all XML related API from canvas. it may have been useful during development, but it is just a distraction - we will NEVER be saving or restoring canvas state via XML or any kind of serialized state
2013-04-15 21:57:08 -04:00
af4539f857
a few changes to fix region dragging, all related to coordinate system handling, which is now much simpler with the new canvas; more debugging output when asked for
2013-04-15 10:38:12 -04:00
4e84bc3a39
changes to get cairocanvas branch to build on OS X, with its stupid nil and Rect macros, plus some const_cast<> and unused variable fixes that should really be in master but will have to wait till we rebase master
2013-04-12 21:46:44 -04:00
ee1f0520a8
many changes to get the cairo-canvas version much, much more functional. still problems with a lot of subtle and not-so-subtle issues
2013-04-11 20:19:22 -04:00
053eaf77fd
a variety of fixes for the cairocanvas, but it still buggy as hell handling events and lots of other stuff
2013-04-09 14:22:58 -04:00
1267b1d61c
mo' better debugging of canvas "structure" via Item::dump and derivatives
2013-04-08 19:48:09 -04:00
07a505b1b2
lots of tweaking and adding debug output including operator<</dump(ostream&) methods to help visualize canvas structure
2013-04-05 11:27:26 -04:00
19bd641915
commit immediately post linking
2013-04-04 18:45:27 -04:00
aaea166135
initial commit of hand merging, plus getting "ancient" waf script to work correctly
2013-04-04 00:32:52 -04:00
