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package ui
import (
"image/color"
rl "github.com/gen2brain/raylib-go/raylib"
)
var defaultGridPadding float32 = 0
var defaultGridRoundness float32 = 0
var defaultGridStyle = &Style {
BacgroundColor: &color.RGBA{0, 0, 0, 0},
FontColor: &rl.DarkGray,
Padding: &defaultGridPadding,
Roundness: &defaultGridRoundness,
}
type GridRow struct {
// A portion of the screen the row will occupy. Works similar to CSS's 'flex-grow'
HeightWeight float32
// The objects that lay in this row
Objects []UIElement
// Spaces between the columns
Spacing float32
// Styling preferences
Style *Style
location rl.Rectangle
cache layoutCache
}
func (base *GridRow) GetElements() []UIElement {
return base.Objects
}
func (base *GridRow) GetSpacing() float32 {
return base.Spacing
}
func (base *GridRow) 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 *GridRow) Destroy() {
}
// Gets the scale width of the element. Works similar to CSS's 'flex-grow'
func (base *GridRow) GetOccupationWeight() float32 {
return base.HeightWeight
}
// Draw the element with the given size
func (base *GridRow) 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: offset.X,
Y: span.Y + *base.Style.Padding,
Width: offset.Y,
Height: span.Height - *base.Style.Padding * 2,
}
v.Draw(&elemSpan)
}
}
func (base *GridRow) 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.Width)
var spacingPx = base.Spacing * span.Width
base.cache.CalculateRowsLocations(base.Objects, weightToScale, spacingPx, span.X)
}
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