diff options
author | Drew DeVault <sir@cmpwn.com> | 2018-02-26 22:54:39 -0500 |
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committer | Drew DeVault <sir@cmpwn.com> | 2018-02-26 22:54:39 -0500 |
commit | 1418e1b9dc41d8f69bccb8de0fe0f1fb6835ce11 (patch) | |
tree | 4ae8b3373fdadb6dd3e7b8c8789cf938522b8f8a /ui/context.go | |
parent | 661e3ec2a4dd97d4a8a8eab4f281b088770a6af2 (diff) |
Split UI library and widgets
Diffstat (limited to 'ui/context.go')
-rw-r--r-- | ui/context.go | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/ui/context.go b/ui/context.go deleted file mode 100644 index ca3f452..0000000 --- a/ui/context.go +++ /dev/null @@ -1,109 +0,0 @@ -package ui - -import ( - "fmt" - - "github.com/mattn/go-runewidth" - tb "github.com/nsf/termbox-go" -) - -// A context allows you to draw in a sub-region of the terminal -type Context struct { - x int - y int - width int - height int -} - -func (ctx *Context) X() int { - return ctx.x -} - -func (ctx *Context) Y() int { - return ctx.y -} - -func (ctx *Context) Width() int { - return ctx.width -} - -func (ctx *Context) Height() int { - return ctx.height -} - -func NewContext(width, height int) *Context { - return &Context{0, 0, width, height} -} - -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")) - } - return &Context{ - x: ctx.x + x, - y: ctx.y + y, - width: width, - height: height, - } -} - -func (ctx *Context) SetCell(x, y int, ch rune, fg, bg tb.Attribute) { - if x >= ctx.width || y >= ctx.height { - panic(fmt.Errorf("Attempted to draw outside of context")) - } - tb.SetCell(ctx.x+x, ctx.y+y, ch, fg, bg) -} - -func (ctx *Context) Printf(x, y int, ref tb.Cell, - format string, a ...interface{}) int { - - if x >= ctx.width || y >= ctx.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 - } - for _, ch := range str { - if str == " こんにちは " { - fmt.Printf("%c\n", ch) - } - switch ch { - case '\n': - if !newline() { - return runewidth.StringWidth(str) - } - case '\r': - x = old_x - default: - tb.SetCell(x, y, ch, ref.Fg, ref.Bg) - x += runewidth.RuneWidth(ch) - if x == old_x+ctx.width { - if !newline() { - return runewidth.StringWidth(str) - } - } - } - } - - 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 - } -} |