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package ui
import (
"encoding/json"
"fmt"
rl "github.com/gen2brain/raylib-go/raylib"
)
const GridRowTypeName string = "gridrow"
type GridRow struct {
// A portion of the screen the row will occupy. Works similar to CSS's 'flex-grow'
Weight float32
// The objects that lay in this row
Objects []UIElement
// Spaces between the columns
Spacing float32
// Styling preferences
Style Style `json:"-"`
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.FillMissing(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.Weight
}
// 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]
// rl.TraceLog(rl.LogInfo, "Cache: %v", base.cache)
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()),
}
rl.TraceLog(rl.LogInfo, "Span: %vx%v \tPadding: %v", span.Width, span.Height, *base.Style.Padding)
base.cache.CalculateOffsets(span.Width, span.Height, *base.Style.Padding, *base.Style.Padding)
var weightToScale = getWeightToPixelsRatio(base, base.cache.Width)
rl.TraceLog(rl.LogInfo, "Ratio: %v", weightToScale)
var spacingPx = base.Spacing * span.Width
base.cache.CalculateRowsLocations(base.Objects, weightToScale, spacingPx, span.X)
}
func (base GridRow) String() string {
var outp, jsonErr = json.Marshal(base)
if jsonErr != nil {
return fmt.Sprintf("Failed to parse settings: %s", jsonErr.Error())
}
return string(outp)
}
|
