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authorMarkus Ongyerth <aerc@ongy.net>2018-06-01 09:58:00 +0200
committerDrew DeVault <sir@cmpwn.com>2018-06-01 16:04:43 -0700
commit80e891a8024ac10a60daa790131e04f0326b0c73 (patch)
tree7a07cc26b2885e43e57e1672d2895c7fae2b173e /lib/ui/context.go
parent3836d240c9aa26615e7d768a57436d171edc3831 (diff)
downloadaerc-80e891a8024ac10a60daa790131e04f0326b0c73.tar.gz
switch to tcell from termbox
This is a simple mostly straight forward switch to tcell in favor of termbox. It uses the tcell native api (not the compat layer) but does not make use of most features. Further changes should include moving to tcell's views.TextArea and the general built in widget behaviour instead of the current ad hoc implementation. Regression: Cursor isn't shown in ex-line
Diffstat (limited to 'lib/ui/context.go')
-rw-r--r--lib/ui/context.go86
1 files changed, 49 insertions, 37 deletions
diff --git a/lib/ui/context.go b/lib/ui/context.go
index ca3f4522..80316897 100644
--- a/lib/ui/context.go
+++ b/lib/ui/context.go
@@ -4,73 +4,77 @@ import (
"fmt"
"github.com/mattn/go-runewidth"
- tb "github.com/nsf/termbox-go"
+ "github.com/gdamore/tcell"
+ "github.com/gdamore/tcell/views"
)
// A context allows you to draw in a sub-region of the terminal
type Context struct {
- x int
- y int
- width int
- height int
+ viewport *views.ViewPort
}
func (ctx *Context) X() int {
- return ctx.x
+ x, _, _, _ := ctx.viewport.GetPhysical()
+ return x
}
func (ctx *Context) Y() int {
- return ctx.y
+ _, y, _, _ := ctx.viewport.GetPhysical()
+ return y
}
func (ctx *Context) Width() int {
- return ctx.width
+ width, _ := ctx.viewport.Size()
+ return width
}
func (ctx *Context) Height() int {
- return ctx.height
+ _, height := ctx.viewport.Size()
+ return height
}
-func NewContext(width, height int) *Context {
- return &Context{0, 0, width, height}
+func NewContext(width, height int, screen tcell.Screen) *Context {
+ vp := views.NewViewPort(screen, 0, 0, width, height)
+ return &Context{vp}
}
func (ctx *Context) Subcontext(x, y, width, height int) *Context {
- if x+width > ctx.width || y+height > ctx.height {
- panic(fmt.Errorf("Attempted to create context larger than parent"))
+ vp_width, vp_height := ctx.viewport.Size()
+ if (x < 0 || y < 0) {
+ panic(fmt.Errorf("Attempted to create context with negative offset"))
}
- return &Context{
- x: ctx.x + x,
- y: ctx.y + y,
- width: width,
- height: height,
+ if (x + width > vp_width || y + height > vp_height) {
+ panic(fmt.Errorf("Attempted to create context larger than parent"))
}
+ vp := views.NewViewPort(ctx.viewport, x, y, width, height)
+ return &Context{vp}
}
-func (ctx *Context) SetCell(x, y int, ch rune, fg, bg tb.Attribute) {
- if x >= ctx.width || y >= ctx.height {
+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"))
}
- tb.SetCell(ctx.x+x, ctx.y+y, ch, fg, bg)
+ crunes := []rune{}
+ ctx.viewport.SetContent(x, y, ch, crunes, style)
}
-func (ctx *Context) Printf(x, y int, ref tb.Cell,
+func (ctx *Context) Printf(x, y int, style tcell.Style,
format string, a ...interface{}) int {
+ width, height := ctx.viewport.Size()
- if x >= ctx.width || y >= ctx.height {
+ if x >= width || y >= height {
panic(fmt.Errorf("Attempted to draw outside of context"))
}
str := fmt.Sprintf(format, a...)
- x += ctx.x
- y += ctx.y
old_x := x
newline := func() bool {
x = old_x
y++
- return y < ctx.height
+ return y < height
}
for _, ch := range str {
if str == " こんにちは " {
@@ -84,9 +88,10 @@ func (ctx *Context) Printf(x, y int, ref tb.Cell,
case '\r':
x = old_x
default:
- tb.SetCell(x, y, ch, ref.Fg, ref.Bg)
+ crunes := []rune{}
+ ctx.viewport.SetContent(x, y, ch, crunes, style)
x += runewidth.RuneWidth(ch)
- if x == old_x+ctx.width {
+ if x == old_x + width {
if !newline() {
return runewidth.StringWidth(str)
}
@@ -97,13 +102,20 @@ func (ctx *Context) Printf(x, y int, ref tb.Cell,
return runewidth.StringWidth(str)
}
-func (ctx *Context) Fill(x, y, width, height int, ref tb.Cell) {
- _x := x
- _y := y
- for ; y < _y+height && y < ctx.height; y++ {
- for ; x < _x+width && x < ctx.width; x++ {
- ctx.SetCell(x, y, ref.Ch, ref.Fg, ref.Bg)
- }
- x = _x
- }
+//func (ctx *Context) Screen() tcell.Screen {
+// return ctx.screen
+//}
+
+func (ctx *Context) Fill(x, y, width, height int, rune rune, style tcell.Style) {
+ vp := views.NewViewPort(ctx.viewport, x, y, width, height)
+ vp.Fill(rune, style)
+}
+
+func (ctx *Context) SetCursor(x, y int) {
+ // FIXME: Cursor needs to be set on tcell.Screen, or layout has to
+ // provide a CellModel
+ // cv := views.NewCellView()
+ // cv.Init()
+ // cv.SetView(ctx.viewport)
+ // cv.SetCursor(x, y)
}