Menu description pt. 1

1 files changed, 84 insertions, 0 deletions

diff --git a/engine/Dynamic/Descriptors/UIElement.go b/engine/Dynamic/Descriptors/UIElement.go
new file mode 100644
index 0000000..e0540ee
--- /dev/null
+++ b/engine/Dynamic/Descriptors/UIElement.go
@@ -0,0 +1,84 @@
+package descriptors
+
+import (
+	"fmt"
+	"strings"
+
+	ui "github.com/DegustatorPonos/RuinesOfRafdolon/UI"
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+type UIElementDescriptor struct {
+	Type string
+	Weight float32
+	Style StyleDescriptor
+
+	// For labels
+	Text string
+	Alignment string
+
+	// For grid elements
+	Children []UIElementDescriptor
+	Spacing float32
+}
+
+func InitUIParser() {
+	typeParsers = map[string]func(*UIElementDescriptor) ui.UIElement {
+		ui.VoidTypeName: parseAsVoid,
+		ui.LabelTypeName: parseAsLabel,
+		ui.GridRowTypeName: parseAsGridRow,
+	}
+}
+
+// The item type to its parser relationship
+var typeParsers map[string]func(*UIElementDescriptor) ui.UIElement
+
+func (base *UIElementDescriptor) Parse() (ui.UIElement, error) {
+	var elemType = strings.ToLower(base.Type)
+	var descFunc, exists = typeParsers[elemType]
+	if exists {
+		return descFunc(base), nil
+	}
+	return nil, fmt.Errorf("Unknown UI element type")
+}
+
+func parseAsVoid(base *UIElementDescriptor) ui.UIElement {
+	return &ui.Void {
+		Weight: base.Weight,
+	}
+}
+
+func parseAsLabel(base *UIElementDescriptor) ui.UIElement {
+	var alignment ui.TextAlignment
+	switch strings.ToLower(base.Alignment) {
+	case "center":
+		alignment = ui.Center
+	case "start":
+		alignment = ui.Start
+	}
+
+	return &ui.Label {
+		WidthWeight: base.Weight,
+		Text: base.Text,
+		Alignment: alignment,
+		Style: base.Style.Parse(),
+	}
+}
+
+func parseAsGridRow(base *UIElementDescriptor) ui.UIElement {
+	var outp = ui.GridRow {
+		Weight: base.Weight,
+		Spacing: base.Spacing,
+		Style: base.Style.Parse(),
+		Objects: make([]ui.UIElement, 0, len(base.Children)),
+	}
+	for _, v := range base.Children {
+		var child, parseErr = v.Parse()
+		if parseErr != nil {
+			rl.TraceLog(rl.LogWarning, "Failed to parse a parent element of a grid row: %v", parseErr.Error())
+			continue
+		}
+		outp.Objects = append(outp.Objects, child)
+	}
+	return &outp
+}