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The top line of the selection rect is arguably 1 px too low, but
waveviews seem centered on the area properly.
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'gtk2_ardour/gui_thread.h'
Technically it doesn't make much difference but from what I can tell, the only files which #include 'gtk2_ardour/gui_thread.h' are the source files from gtk2_ardour itself. The support libraries always #include 'gtkmm2ext/gui_thread.h' directly (which seems sensible). So for consistency's sake, let's keep it the same for libcanvas.
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Invalidate all source entries from the image cache when we get our
region's DropReferences signal, while ignoring any subsequent regions with
no source.
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Should fix crash when audiosource disappears.
Reworked from submitted patch from tlat.
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In summary:
* no antialiasing of waveviews
* no diagonal lines
* simplify clip detection
* don't use LINE_CAP_ROUND for outline
* use the wave colour when drawing outline only
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wasn't the no-op it claimed to be.
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Canvas::WaveView
And add commented out attempt at more subtle attempt to get it right
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waveview when necessary
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fixes http://tracker.ardour.org/view.php?id=5589#c15515
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* proper y-pixel alignment (+.5px offset)
* outline: draw dots (not 1px lines)
* shape: round towards peak (use signal, not top/bot)
* honor 2px red selection border
* work-around canvas rect +1 issue
* always draw clipping line towards center
* draw at most one clip-line at either side of 0.
* exact 1px wide zero line
* fix spread calculation for rectified view
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Reduce user panic by removing ! from missing file dialog title.
Use justify left in missing file dialog.
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the region is resized; implement WaveView::set_region_start() which could be used by an xfade editor etc.
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be) slightly more efficient and is simpler to understand; add comments
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There are 3 possible components to draw at each x-axis position: the waveform "line", the zero line and an outline/clip indicator.
We have to decide which of the 3 to draw at each position, pixel by pixel. This makes the rendering less efficient but it is
the only way I can see to do this correctly.
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draw zero line before outline, for better effects with low amplitude waves
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class; rename Group as "Layout" and retain only drawing semantics
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Items no longer need a parent group (they require a Canvas pointer instead), so all constructors have been rationalized
and have two variants, one with a parent and one with a canvas.
All Items now inherit from Fill and Outline, to banish diagonal inheritance and virtual base classes and all that.
There were zero changes to the Ardour GUI arising from these changes.
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in waveviews
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previous one, but usually ends up using three of them at the current
CACHE_HIGH_WATER setting.
Should result in a smaller memory footprint for sessions with
multiple copies of nearby audio segments (electronic style).
The downside is the larger memory footprint for linear recording
sessions if CACHE_HIGH_WATER > 1 (1 giving a max of two
half - sized cache entries per audio stream).
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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.
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down when dealing with fractional pixels
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color for edge dots of waveforms instead of hardcoding black
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audio region views
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Item::covers(Duple const&)
Default implementation for Item still uses bounding box, but specializations for Arc (Circle), Polygon, Line and PolyLine have been added
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* clip level is now -0.9dbFS
* display of clipping is optional (see Theme Manager window)
* clipping is based on disk data, unscaled by region gain
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height)
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Mostly this just involved removing the private CacheEntry class that really served no further purpose once
the design reverted to a single cached image
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