More FramedCurve render work
- draw last point correctly if applicable - comment intent.
This commit is contained in:
parent
a98015e11a
commit
1eb8216408
@ -201,45 +201,49 @@ FramedCurve::render (Rect const & area, Cairo::RefPtr<Cairo::Context> context) c
|
||||
}
|
||||
}
|
||||
|
||||
/* a redraw may have been requested between the last sample and the last point.*/
|
||||
const Duple first_sample = Duple (samples[left].x, samples[left].y);
|
||||
|
||||
const Duple first_point = Duple (samples[left].x, samples[left].y);
|
||||
Duple last_point = Duple (samples[right].x, samples[right].y);
|
||||
|
||||
if (draw.x1 > last_point.x) {
|
||||
last_point = Duple (_points.back().x, _points.back().y);
|
||||
}
|
||||
|
||||
window_space = item_to_window (first_point);
|
||||
/* move to the first sample's x and the draw height */
|
||||
window_space = item_to_window (Duple (first_sample.x, draw.height()));
|
||||
context->move_to (window_space.x, window_space.y);
|
||||
|
||||
/* draw line between samples */
|
||||
for (uint32_t idx = left + 1; idx <= right; ++idx) {
|
||||
/* draw line to first sample and then between samples */
|
||||
for (uint32_t idx = left; idx <= right; ++idx) {
|
||||
window_space = item_to_window (Duple (samples[idx].x, samples[idx].y), false);
|
||||
context->line_to (window_space.x, window_space.y);
|
||||
}
|
||||
|
||||
/* a redraw may have been requested between the last sample and the last point.
|
||||
if so, draw a line to the last _point.
|
||||
*/
|
||||
Duple last_sample = Duple (samples[right].x, samples[right].y);
|
||||
|
||||
if (draw.x1 > last_sample.x) {
|
||||
last_sample = Duple (_points.back().x, _points.back().y);
|
||||
window_space = item_to_window (last_sample, false);
|
||||
context->line_to (window_space.x, window_space.y);
|
||||
}
|
||||
|
||||
switch (curve_fill) {
|
||||
case None:
|
||||
context->stroke();
|
||||
break;
|
||||
case Inside:
|
||||
context->stroke_preserve ();
|
||||
|
||||
window_space = item_to_window (Duple (last_point.x, draw.height()));
|
||||
/* close the frame, possibly using the last _point's x rather than samples[right].x */
|
||||
window_space = item_to_window (Duple (last_sample.x, draw.height()));
|
||||
context->line_to (window_space.x, window_space.y);
|
||||
window_space = item_to_window (Duple (first_point.x, draw.height()));
|
||||
window_space = item_to_window (Duple (first_sample.x, draw.height()));
|
||||
context->line_to (window_space.x, window_space.y);
|
||||
|
||||
context->close_path();
|
||||
setup_fill_context(context);
|
||||
context->fill ();
|
||||
break;
|
||||
case Outside:
|
||||
context->stroke_preserve ();
|
||||
window_space = item_to_window (last_point);
|
||||
window_space = item_to_window (last_sample);
|
||||
context->line_to (window_space.x, window_space.y);
|
||||
window_space = item_to_window (first_point);
|
||||
window_space = item_to_window (first_sample);
|
||||
context->line_to (window_space.x, window_space.y);
|
||||
context->close_path();
|
||||
setup_fill_context(context);
|
||||
|
Loading…
Reference in New Issue
Block a user