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ui: avoid panic when terminal window is shrunk 

When using a tiling window manager, aerc terminal dimensions may be
greatly reduced after a new window has been created by :open. When the
ui attempts to render to formerly-valid coordinates, SetCell & Printf
may panic. Replace panic() with no-op in both functions to prevent
aerc from crashing after a window shrink.

Signed-off-by: Jason Stewart <support@eggplantsd.com>
Acked-by: Robin Jarry <robin@jarry.cc>
This commit is contained in:
Jason Stewart 2022-09-26 11:11:49 -04:00 committed by Robin Jarry
parent 4c3565653a
commit 27978a859b
1 changed files with 4 additions and 2 deletions
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6
lib/ui/context.go
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@ -56,7 +56,8 @@ func (ctx *Context) Subcontext(x, y, width, height int) *Context {
func (ctx *Context) SetCell(x, y int, ch rune, style tcell.Style) {
width, height := ctx.viewport.Size()
if x >= width || y >= height {
panic(fmt.Errorf("Attempted to draw outside of context"))
// no-op when dims are inadequate
return
}
crunes := []rune{}
ctx.viewport.SetContent(x, y, ch, crunes, style)
@ -68,7 +69,8 @@ func (ctx *Context) Printf(x, y int, style tcell.Style,
width, height := ctx.viewport.Size()
if x >= width || y >= height {
panic(fmt.Errorf("Attempted to draw outside of context"))
// no-op when dims are inadequate
return 0
}
str := fmt.Sprintf(format, a...)