ardour/livetrax
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pending-peaks: checker pattern.

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This commit is contained in:
Robin Gareus 2015-09-15 02:28:24 +02:00
parent 7e1baa70e4
commit 11c0adfbae
1 changed files with 29 additions and 6 deletions
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35
gtk2_ardour/audio_region_view.cc
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@ -76,6 +76,34 @@ static double const handle_size = 10; /* height of fade handles */
Cairo::RefPtr<Cairo::Pattern> AudioRegionView::pending_peak_pattern;
static Cairo::RefPtr<Cairo::Pattern> create_pending_peak_pattern() {
cairo_surface_t * is = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 8, 8);
// create checker pattern
unsigned char *img = cairo_image_surface_get_data (is);
cairo_surface_flush (is);
const int stride = cairo_image_surface_get_stride (is);
for (int y = 0; y < 8; ++y) {
for (int x = 0; x < 8; ++x) {
const int off = (y * stride + x * 4);
uint32_t *pixel = (uint32_t*) &img[off];
if ((x < 4) ^ (y < 4)) {
*pixel = 0xa0000000;
} else {
*pixel = 0x40000000;
}
}
}
cairo_surface_mark_dirty (is);
cairo_pattern_t* pat = cairo_pattern_create_for_surface (is);
cairo_pattern_set_extend (pat, CAIRO_EXTEND_REPEAT);
Cairo::RefPtr<Cairo::Pattern> p (new Cairo::Pattern (pat, false));
cairo_surface_destroy (is);
return p;
}
AudioRegionView::AudioRegionView (ArdourCanvas::Container *parent, RouteTimeAxisView &tv, boost::shared_ptr<AudioRegion> r, double spu,
uint32_t basic_color)
: RegionView (parent, tv, r, spu, basic_color)
@ -149,12 +177,7 @@ AudioRegionView::init (bool wfd)
// where order is important and where it isn't...
if (!pending_peak_pattern) {
cairo_pattern_t* pat = cairo_pattern_create_radial (4.0, 4.0, 1.0, 4.0, 4.0, 4.0);
cairo_pattern_add_color_stop_rgba (pat, 0.0, 0, 0, 0, 1.0);
cairo_pattern_add_color_stop_rgba (pat, 0.6, 0, 0, 0, 0.0);
cairo_pattern_set_extend (pat, CAIRO_EXTEND_REPEAT);
Cairo::RefPtr<Cairo::Pattern> p (new Cairo::Pattern (pat, false));
pending_peak_pattern = p;
pending_peak_pattern = create_pending_peak_pattern();
}
// needs to be created first, RegionView::init() calls set_height()