akkartik
/
mu
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

slack: ctrl-f for page-down

This commit is contained in:
Kartik K. Agaram 2021-08-11 18:08:08 -07:00
parent 5c55de64e0
commit a0550a55fd
3 changed files with 92 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
501draw-text.mu
View File

@ -172,19 +172,16 @@ fn render-grapheme screen: (addr screen), g: grapheme, xmin: int, ymin: int, xma
# that way the caller can draw more if given the same min and max bounding-box.
# if there isn't enough space, truncate
fn draw-text-wrapping-right-then-down screen: (addr screen), _text: (addr array byte), xmin: int, ymin: int, xmax: int, ymax: int, _x: int, _y: int, color: int, background-color: int -> _/eax: int, _/ecx: int {
var stream-storage: (stream byte 0x200/print-buffer-size) # 4 rows of text = 1/12th of a real screen
# fake screens unlikely to be larger
# so this seems a reasonable size
# allocated on the stack, so quickly reclaimed
var stream-storage: (stream byte 0x4000/print-buffer-size)
var stream/edi: (addr stream byte) <- address stream-storage
var text/esi: (addr array byte) <- copy _text
var len/eax: int <- length text
compare len, 0x200
compare len, 0x4000/print-buffer-size
{
break-if-<
write stream, "ERROR: stream too small in draw-text-wrapping-right-then-down"
}
compare len, 0x200
compare len, 0x4000/print-buffer-size
{
break-if->=
write stream, text

92
browse-slack/environment.mu
View File

@ -2,6 +2,7 @@
# are fully specified by the operations used to generate them.
type environment {
item-index: int
}
# static buffer sizes in this file:
@ -10,6 +11,7 @@ type environment {
# item-padding-ver # in characters
# avatar-side # in pixels
# avatar-space-hor # in characters
# avatar-space-ver # in characters
# search-position-x # in characters
# search-space-ver # in characters
# author-name-padding-ver # in characters
@ -17,6 +19,15 @@ type environment {
# channel-offset-x # in characters
# menu-space-ver # in characters
fn initialize-environment _self: (addr environment), _items: (addr item-list) {
var self/esi: (addr environment) <- copy _self
var items/eax: (addr item-list) <- copy _items
var newest-item-a/eax: (addr int) <- get items, newest
var newest-item/eax: int <- copy *newest-item-a
var dest/edi: (addr int) <- get self, item-index
copy-to *dest, newest-item
}
fn render-environment screen: (addr screen), env: (addr environment), users: (addr array user), channels: (addr array channel), items: (addr item-list) {
clear-screen screen
render-search-input screen, env
@ -49,7 +60,8 @@ fn render-channels screen: (addr screen), env: (addr environment), _channels: (a
}
}
fn render-item-list screen: (addr screen), env: (addr environment), _items: (addr item-list), users: (addr array user) {
fn render-item-list screen: (addr screen), _env: (addr environment), _items: (addr item-list), users: (addr array user) {
var env/esi: (addr environment) <- copy _env
var tmp-width/eax: int <- copy 0
var tmp-height/ecx: int <- copy 0
tmp-width, tmp-height <- screen-size screen
@ -60,12 +72,12 @@ fn render-item-list screen: (addr screen), env: (addr environment), _items: (add
#
var y/ecx: int <- copy 2/search-space-ver
y <- add 1/item-padding-ver
var newest-item/eax: (addr int) <- get env, item-index
var i/ebx: int <- copy *newest-item
var items/esi: (addr item-list) <- copy _items
var items-data-ah/eax: (addr handle array item) <- get items, data
var _items-data/eax: (addr array item) <- lookup *items-data-ah
var items-data/edi: (addr array item) <- copy _items-data
var newest-item/eax: (addr int) <- get items, newest
var i/ebx: int <- copy *newest-item
{
compare i, 0
break-if-<
@ -96,6 +108,10 @@ fn render-menu screen: (addr screen) {
set-cursor-position screen, 2/x, y
draw-text-rightward-from-cursor screen, " / ", width, 0/fg 0xf/bg
draw-text-rightward-from-cursor screen, " search ", width, 0xf/fg, 0/bg
draw-text-rightward-from-cursor screen, " ^f ", width, 0/fg 0xf/bg
draw-text-rightward-from-cursor screen, " next page ", width, 0xf/fg, 0/bg
draw-text-rightward-from-cursor screen, " ^b ", width, 0/fg 0xf/bg
draw-text-rightward-from-cursor screen, " previous page ", width, 0xf/fg, 0/bg
}
fn render-item screen: (addr screen), _item: (addr item), _users: (addr array user), y: int, screen-height: int -> _/ecx: int {
@ -148,8 +164,9 @@ fn render-item screen: (addr screen), _item: (addr item), _users: (addr array us
var text-y/ecx: int <- copy y
text-y <- add 1/author-name-padding-ver
x, text-y <- draw-text-wrapping-right-then-down screen, text, x text-y, 0x70/xmax=post-right-coord screen-height, x text-y, 7/fg 0/bg
text-y <- add 2/item-padding-ver
# flush
add-to y, 6
add-to y, 6/avatar-space-ver
compare y, text-y
{
break-if-<
@ -158,5 +175,70 @@ fn render-item screen: (addr screen), _item: (addr item), _users: (addr array us
return text-y
}
fn update-environment env: (addr environment), key: byte {
fn update-environment env: (addr environment), key: byte, items: (addr item-list) {
{
compare key, 6/ctrl-f
break-if-!=
page-down env, items
return
}
{
compare key, 2/ctrl-b
break-if-!=
page-up env, items
return
}
}
fn page-down _env: (addr environment), _items: (addr item-list) {
var env/edi: (addr environment) <- copy _env
var items/esi: (addr item-list) <- copy _items
var items-data-ah/eax: (addr handle array item) <- get items, data
var _items-data/eax: (addr array item) <- lookup *items-data-ah
var items-data/ebx: (addr array item) <- copy _items-data
var src/eax: (addr int) <- get env, item-index
var new-item-index/ecx: int <- copy *src
var y/edx: int <- copy 2
{
compare new-item-index, 0
break-if-<
compare y, 0x28/screen-height-minus-menu
break-if->=
var offset/eax: (offset item) <- compute-offset items-data, new-item-index
var item/eax: (addr item) <- index items-data, offset
var item-text-ah/eax: (addr handle array byte) <- get item, text
var item-text/eax: (addr array byte) <- lookup *item-text-ah
var h/eax: int <- estimate-height item-text
set-cursor-position 0/screen, 0 0
draw-int32-decimal-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, h, 4/fg 0/bg
y <- add h
new-item-index <- decrement
loop
}
new-item-index <- increment
var dest/eax: (addr int) <- get env, item-index
copy-to *dest, new-item-index
}
fn page-up _env: (addr environment), _items: (addr item-list) {
}
# keep sync'd with render-item
fn estimate-height _message-text: (addr array byte) -> _/eax: int {
var message-text/esi: (addr array byte) <- copy _message-text
var result/eax: int <- length message-text
var remainder/edx: int <- copy 0
result, remainder <- integer-divide result, 0x40/post-width
compare remainder, 0
{
break-if-=
result <- increment
}
result <- add 2/item-padding-ver
compare result, 6/avatar-space-ver
{
break-if->
return 6/avatar-space-ver
}
return result
}

3
browse-slack/main.mu
View File

@ -81,13 +81,14 @@ fn main screen: (addr screen), keyboard: (addr keyboard), data-disk: (addr disk)
# render
var env-storage: environment
var env/ebx: (addr environment) <- address env-storage
initialize-environment env, items
{
render-environment screen, env, users, channels, items
{
var key/eax: byte <- read-key keyboard
compare key, 0
loop-if-=
update-environment env, key
update-environment env, key, items
}
loop
}