/
canvas.go
66 lines (53 loc) · 1.26 KB
/
canvas.go
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package windeau
import (
"github.com/nsf/termbox-go"
)
type Cell struct {
Char rune
Fg, Bg termbox.Attribute
}
var BlankCell Cell = Cell{' ', termbox.ColorDefault, termbox.ColorDefault}
type Canvas struct {
X, Y, Width, Height int
Parent *Drawable
cells [][]Cell
}
func MakeCanvas(x, y, w, h int) *Canvas {
canvas := &Canvas{X: x, Y: y, Width: w, Height: h}
canvas.initialize()
return canvas
}
func (c *Canvas) GetRect() Rect {
return Rect{c.X, c.Y, c.Width, c.Height}
}
func (c *Canvas) Fill(char rune, fg, bg termbox.Attribute) {
c.FilledRect(char, fg, bg, c.GetRect())
}
func (c *Canvas) FilledRect(char rune, fg, bg termbox.Attribute, rect Rect) {
if c.GetRect().DoesNotContain(rect) {
return
}
offsetX := rect.X - c.X
offsetY := rect.Y - c.Y
for i := 0; i < rect.Width; i++ {
for j := 0; j < rect.Height; j++ {
c.cells[i+offsetX][j+offsetY] = Cell{char, fg, bg}
}
}
}
func (c *Canvas) Draw() {
for x, row := range c.cells {
for y, cell := range row {
termbox.SetCell(x+c.X, y+c.Y, cell.Char, cell.Fg, cell.Bg)
}
}
}
func (c *Canvas) Cells() [][]Cell {
return c.cells
}
func (c *Canvas) initialize() {
c.cells = make([][]Cell, c.Width)
for i := range c.cells {
c.cells[i] = make([]Cell, c.Height)
}
}