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make pixel borders of screen clear

This commit is contained in:
Kartik K. Agaram 2021-04-29 20:35:50 -07:00
parent 26eae87d3f
commit 24222b1735
1 changed files with 20 additions and 16 deletions
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36
shell/sandbox.mu
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@ -216,13 +216,14 @@ fn render-empty-screen screen: (addr screen), _target-screen: (addr screen), xmi
# top border
{
set-cursor-position screen, xmin, screen-y
move-cursor-right screen
var width/edx: (addr int) <- get target-screen, width
var limit/edx: int <- copy *width
limit <- add 2/screen-border
var x/ebx: int <- copy 0
{
compare x, *width
compare x, limit
break-if->=
draw-code-point-at-cursor screen, 0x2d/horizontal-bar, 0x18/fg, 0/bg
draw-code-point-at-cursor screen, 0x20/space, 0/fg, 0x12/bg=almost-black
move-cursor-right screen
x <- increment
loop
@ -236,7 +237,7 @@ fn render-empty-screen screen: (addr screen), _target-screen: (addr screen), xmi
compare y, *height
break-if->=
set-cursor-position screen, xmin, screen-y
draw-code-point-at-cursor screen, 0x7c/vertical-bar, 0x18/fg, 0/bg
draw-code-point-at-cursor screen, 0x20/space, 0/fg, 0x12/bg=almost-black
move-cursor-right screen
var width/edx: (addr int) <- get target-screen, width
var x/ebx: int <- copy 0
@ -248,7 +249,7 @@ fn render-empty-screen screen: (addr screen), _target-screen: (addr screen), xmi
x <- increment
loop
}
draw-code-point-at-cursor screen, 0x7c/vertical-bar, 0x18/fg, 0/bg
draw-code-point-at-cursor screen, 0x20/space, 0/fg, 0x12/bg=almost-black
y <- increment
screen-y <- increment
loop
@ -256,13 +257,14 @@ fn render-empty-screen screen: (addr screen), _target-screen: (addr screen), xmi
# bottom border
{
set-cursor-position screen, xmin, screen-y
move-cursor-right screen
var width/edx: (addr int) <- get target-screen, width
var limit/edx: int <- copy *width
limit <- add 2/screen-border
var x/ebx: int <- copy 0
{
compare x, *width
compare x, limit
break-if->=
draw-code-point-at-cursor screen, 0x2d/horizontal-bar, 0x18/fg, 0/bg
draw-code-point-at-cursor screen, 0x20/space, 0x20/space, 0x12/bg=almost-black
move-cursor-right screen
x <- increment
loop
@ -278,13 +280,14 @@ fn render-screen screen: (addr screen), _target-screen: (addr screen), xmin: int
# top border
{
set-cursor-position screen, xmin, screen-y
move-cursor-right screen
var width/edx: (addr int) <- get target-screen, width
var limit/edx: int <- copy *width
limit <- add 2/screen-border
var x/ebx: int <- copy 0
{
compare x, *width
compare x, limit
break-if->=
draw-code-point-at-cursor screen, 0x2d/horizontal-bar, 0x18/fg, 0/bg
draw-code-point-at-cursor screen, 0x20/space, 0/fg, 0x12/bg=almost-black
move-cursor-right screen
x <- increment
loop
@ -299,7 +302,7 @@ fn render-screen screen: (addr screen), _target-screen: (addr screen), xmin: int
compare y, *height
break-if->=
set-cursor-position screen, xmin, screen-y
draw-code-point-at-cursor screen, 0x7c/vertical-bar, 0x18/fg, 0/bg
draw-code-point-at-cursor screen, 0x20/space, 0/fg, 0x12/bg=almost-black
move-cursor-right screen
var width/edx: (addr int) <- get target-screen, width
var x/ebx: int <- copy 0
@ -311,7 +314,7 @@ fn render-screen screen: (addr screen), _target-screen: (addr screen), xmin: int
x <- increment
loop
}
draw-code-point-at-cursor screen, 0x7c/vertical-bar, 0x18/fg, 0/bg
draw-code-point-at-cursor screen, 0x20/space, 0/fg, 0x12/bg=almost-black
y <- increment
screen-y <- increment
loop
@ -372,13 +375,14 @@ fn render-screen screen: (addr screen), _target-screen: (addr screen), xmin: int
# bottom border
{
set-cursor-position screen, xmin, screen-y
move-cursor-right screen
var width/edx: (addr int) <- get target-screen, width
var limit/edx: int <- copy *width
limit <- add 2/screen-border
var x/ebx: int <- copy 0
{
compare x, *width
compare x, limit
break-if->=
draw-code-point-at-cursor screen, 0x2d/horizontal-bar, 0x18/fg, 0/bg
draw-code-point-at-cursor screen, 0x20/space, 0x20/space, 0x12/bg=almost-black
move-cursor-right screen
x <- increment
loop