Initial release: RadiantWave v1.0

internal/page/pageItem.go

@@ -0,0 +1,83 @@
+package page
+
+import (
+	"fmt"
+
+	"github.com/go-gl/mathgl/mgl32"
+	"github.com/veandco/go-sdl2/sdl"
+	"rhemawavetech.com/rhemawave/internal/fontManager"
+	"rhemawavetech.com/rhemawave/internal/shaderManager"
+)
+
+// PageItem defines the basic features of any item on any page
+// This coupling makes creating, updating and managing pages easier
+type PageItem struct {
+	ID    uint32
+	W     int32
+	H     int32
+	X     int32 // Horizontal position
+	Y     int32 // Vertical position
+	Color sdl.Color
+	// index int
+}
+
+// Scale updates the W and H of an item based on a scale factor (usually determined by base font size / desired font size)
+func (i *PageItem) Scale(scale float32) {
+	i.W = int32(float32(i.W) * scale)
+	i.H = int32(float32(i.H) * scale)
+}
+
+// Dimensions returns an mgl32.Vec2 containing the W and H of an item, respectively
+func (i *PageItem) Dimensions(scale float32) mgl32.Vec2 {
+	return mgl32.Vec2{float32(float32(i.W) * scale), float32(float32(i.H) * scale)}
+}
+
+// RawDimensions returns a mgl32.Vec2 containing the W and H of an item, without scaling
+// This method will replace Dimensions in the future. Future PageItems should first call Scale(), then RawDimensions()
+func (i *PageItem) RawDimensions() mgl32.Vec2 {
+	return mgl32.Vec2{float32(i.W), float32(i.H)}
+}
+
+// Position returns an mgl32.Vec2 contianing the X and Y positions of an item, respectively
+func (i *PageItem) Position() mgl32.Vec2 {
+	return mgl32.Vec2{float32(i.X), float32(i.Y)}
+}
+
+// StringItem is an extended PageItem that contains a string content and string specific methods
+type StringItem struct {
+	PageItem
+	content string
+}
+
+// NewStringItem creates a new StringItem with the given content, font, and color.
+// It initializes the texture ID, width, and height by creating a string texture using the font
+// and shader manager.
+func NewStringItem(content string, font *fontManager.FontEntry, color sdl.Color) (StringItem, error) {
+	var err error
+
+	fm := fontManager.Get()
+	sm := shaderManager.Get()
+
+	shader, ok := sm.Get("text")
+	if !ok {
+		return StringItem{}, fmt.Errorf("failed to fetch shader")
+	}
+
+	id, width, height, err := fm.CreateStringTexture(font.Name, content, shader)
+	if err != nil {
+		return StringItem{}, err
+	}
+
+	newStringItem := StringItem{
+		PageItem: PageItem{
+			ID:    id,
+			W:     width,
+			H:     height,
+			Color: color,
+		},
+		content: content,
+	}
+
+	return newStringItem, err
+
+}