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package ui
import rl "github.com/gen2brain/raylib-go/raylib"
type GridColumn struct {
// A portion of the screen the row will occupy. Works similar to CSS's 'flex-grow'
WidthWeight float32
// The objects that lay in this row
Spacing float32
// Spaces between the columns
Objects []UIElement
// Styling preferences
Style *Style
location rl.Rectangle
cache layoutCache
}
func (base *GridColumn) Init(parent *Menu) {
base.Style = InitStyle(base.Style, defaultGridStyle)
for _, v := range base.Objects {
v.Init(parent)
}
base.cache = layoutCache {
ScreenResolution: rl.Vector2{ X:0, Y:0 },
}
}
func (base *GridColumn) Destroy() {
}
// Gets the scale width of the element. Works similar to CSS's 'flex-grow'
func (base *GridColumn) GetOccupationWeight() float32 {
return base.WidthWeight
}
// Draw the element with the given size
func (base *GridColumn) Draw(span *rl.Rectangle) {
if !base.cache.IsValid() {
base.RecalculateCache(span)
}
for i, v := range base.Objects {
var offset = base.cache.RowLocations[i]
var elemSpan = rl.Rectangle {
X: span.X + *base.Style.Padding,
Y: offset.X,
Width: base.cache.Width,
Height: offset.Y,
}
v.Draw(&elemSpan)
}
}
func (base *GridColumn) RecalculateCache(span *rl.Rectangle) {
base.cache.SpanResolution = rl.Vector2{
X: span.Width,
Y: span.Height,
}
base.cache.ScreenResolution = rl.Vector2 {
X: float32(rl.GetScreenWidth()),
Y: float32(rl.GetScreenHeight()),
}
base.cache.CalculateOffsets(span.Width, span.Height, *base.Style.Padding, *base.Style.Padding)
var weightToScale = getWeightToPixelsRatio(base, base.cache.Height)
var spacingPx = base.Spacing * span.Height
base.cache.CalculateRowsLocations(base.Objects, weightToScale, spacingPx, span.Y)
}
func (base *GridColumn) GetElements() []UIElement {
return base.Objects
}
func (base *GridColumn) GetSpacing() float32 {
return base.Spacing
}
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