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Ensure group_count is never zero in any ImageRef

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Now group_count means the number of refs pointing to the same image from
that ref onwards. This is needed because we can index the list of refs
at any point when drawing not just at the start of a group.

Fixes #6594
This commit is contained in:
Kovid Goyal 2023-09-02 12:48:44 +05:30
parent 0be1295023
commit 951951776a
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GPG Key ID: 06BC317B515ACE7C
2 changed files with 25 additions and 6 deletions
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12
kitty/graphics.c
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@ -983,12 +983,14 @@ grman_update_layers(GraphicsManager *self, unsigned int scrolled_by, float scree
// Calculate the group counts
i = 0;
while (i < self->count) {
id_type image_id = self->render_data[i].image_id, start = i;
if (start == self->count - 1) i = self->count;
else {
while (i < self->count - 1 && self->render_data[++i].image_id == image_id) {}
id_type num_identical = 1, image_id = self->render_data[i].image_id, start = i;
while (++i < self->count) {
if (self->render_data[i].image_id != image_id) break;
num_identical++;
}
while (num_identical > 0) {
self->render_data[start++].group_count = num_identical--;
}
self->render_data[start].group_count = i - start;
}
return true;
}

19
kitty_tests/graphics.py
View File

@ -516,13 +516,30 @@ class TestGraphics(BaseTest):
rect_eq(l2[0]['dest_rect'], left, top, -1 + (1 + s.columns) * dx, top - dy * 5 / ch)
rect_eq(l2[1]['src_rect'], 0, 0, 1, 1)
rect_eq(l2[1]['dest_rect'], -1, 1, -1 + dx, 1 - dy)
self.ae(l2[0]['group_count'], 1), self.ae(l2[1]['group_count'], 1)
self.ae(l2[0]['group_count'], 2)
self.ae(l2[1]['group_count'], 1)
self.ae(s.cursor.x, 0), self.ae(s.cursor.y, 1)
self.ae(put_image(s, 10, 20, cursor_movement=1)[1], 'OK')
self.ae(s.cursor.x, 0), self.ae(s.cursor.y, 1)
s.reset()
self.assertEqual(s.grman.disk_cache.total_size, 0)
def test_image_layer_grouping(self):
cw, ch = 10, 20
s, dx, dy, put_image, put_ref, layers, rect_eq = put_helpers(self, cw, ch)
def group_counts():
return tuple(x['group_count'] for x in layers(s))
self.ae(put_image(s, 10, 20, id=1)[1], 'OK')
self.ae(group_counts(), (1,))
put_ref(s, id=1, num_cols=2, num_lines=1, placement_id=2)
put_ref(s, id=1, num_cols=2, num_lines=1, placement_id=3, z=-2)
put_ref(s, id=1, num_cols=2, num_lines=1, placement_id=4, z=-2)
self.ae(group_counts(), (4, 3, 2, 1))
self.ae(put_image(s, 8, 16, id=2, z=-1)[1], 'OK')
self.ae(group_counts(), (2, 1, 1, 2, 1))
def test_unicode_placeholders(self):
# This test tests basic image placement using using unicode placeholders
cw, ch = 10, 20