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unicode_input kitten: Fix scrolling over multiple screens not working

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Fixes #6497
This commit is contained in:
Kovid Goyal
2023-07-27 08:40:19 +05:30
parent 6fda8d7e23
commit 737e4cdbd3
2 changed files with 31 additions and 19 deletions
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48
kittens/unicode_input/table.go
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@@ -51,15 +51,21 @@ func ljust(s string, sz int) string {
return s
}
type scroll_data struct {
num_items_per_page int
scroll_rows int
}
type table struct {
emoji_variation string
layout_dirty bool
last_rows, last_cols int
codepoints []rune
current_idx, scroll_rows int
text string
num_cols, num_rows int
mode Mode
emoji_variation string
layout_dirty bool
last_rows, last_cols int
codepoints []rune
current_idx int
scroll_data scroll_data
text string
num_cols, num_rows int
mode Mode
green, reversed, intense_gray func(...any) string
}
@@ -81,6 +87,7 @@ func (self *table) current_codepoint() rune {
}
func (self *table) set_codepoints(codepoints []rune, mode Mode, current_idx int) {
delta := len(codepoints) - len(self.codepoints)
self.codepoints = codepoints
if self.codepoints != nil && mode != FAVORITES && mode != HEX {
slices.Sort(self.codepoints)
@@ -93,7 +100,9 @@ func (self *table) set_codepoints(codepoints []rune, mode Mode, current_idx int)
if self.current_idx >= len(self.codepoints) {
self.current_idx = 0
}
self.scroll_rows = 0
if delta != 0 {
self.scroll_data = scroll_data{}
}
}
func (self *table) codepoint_at_hint(hint string) rune {
@@ -201,7 +210,10 @@ func (self *table) layout(rows, cols int) string {
space_for_desc = col_width - 2 - idx_size - 4
self.num_rows = rows
rows_left := rows
skip_scroll := self.scroll_rows * self.num_cols
if self.scroll_data.num_items_per_page != self.num_cols*self.num_rows {
self.update_scroll_data()
}
skip_scroll := self.scroll_data.scroll_rows * self.num_cols
for i, cd := range parts {
if skip_scroll > 0 {
@@ -223,6 +235,12 @@ func (self *table) layout(rows, cols int) string {
return self.text
}
func (self *table) update_scroll_data() {
self.scroll_data.num_items_per_page = self.num_rows * self.num_cols
page_num := self.current_idx / self.scroll_data.num_items_per_page
self.scroll_data.scroll_rows = self.num_rows * page_num
}
func (self *table) move_current(rows, cols int) {
if len(self.codepoints) == 0 {
return
@@ -237,13 +255,5 @@ func (self *table) move_current(rows, cols int) {
self.current_idx = utils.Max(0, utils.Min(self.current_idx, len(self.codepoints)-1))
self.layout_dirty = true
}
first_visible := self.scroll_rows * self.num_cols
last_visible := first_visible + ((self.num_cols * self.num_rows) - 1)
scroll_amount := self.num_rows
if self.current_idx < first_visible {
self.scroll_rows = utils.Max(self.scroll_rows-scroll_amount, 0)
}
if self.current_idx > last_visible {
self.scroll_rows += scroll_amount
}
self.update_scroll_data()
}