initial commit
This commit is contained in:
NeilClack
@@ -0,0 +1,273 @@
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package page
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import (
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"fmt"
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"strings"
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"time"
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"github.com/go-gl/gl/v3.3-core/gl"
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"github.com/go-gl/mathgl/mgl32"
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"github.com/veandco/go-sdl2/sdl"
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"rhemawavetech.com/rhemawave/internal/colors"
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"rhemawavetech.com/rhemawave/internal/db"
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"rhemawavetech.com/rhemawave/internal/fontManager"
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"rhemawavetech.com/rhemawave/internal/logger"
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"rhemawavetech.com/rhemawave/internal/shaderManager"
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)
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type LogViewerPage struct {
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Base
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titleTextureID uint32
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titleTextureWidth int32
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titleTextureHeight int32
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lines []string
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lineTextureIDs []uint32
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lineTextureWidths []int32
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lineTextureHeights []int32
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lineColors []sdl.Color
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hintTextureID uint32
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hintTextureWidth int32
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hintTextureHeight int32
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scrollOffset int32
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maxScrollOffset int32
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lineHeight int32
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visibleHeight int32
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}
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func (p *LogViewerPage) Init(ctx *PageCtx) error {
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var logs []db.Log
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if err := p.Base.Init(ctx); err != nil {
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return fmt.Errorf("failed base page initialization: %w", err)
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}
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if result := p.Context.DbPtr.Order("timestamp desc").Limit(250).Find(&logs); result.Error != nil {
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logger.Error("error querying database for logs: %s", result.Error)
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return fmt.Errorf("%s", result.Error)
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}
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// // Format and word-wrap each log entry
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// for _, entry := range logs {
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// formatted := fmt.Sprintf("[%s] [%s] %s", entry.Timestamp, entry.Level, entry.Message)
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// wrapped := wrapText(formatted, 100)
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// p.lines = append(p.lines, strings.Split(wrapped, "\n")...)
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// }
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levelColors := map[string]sdl.Color{
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"DEBUG": colors.SkyBlue,
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"INFO": colors.White,
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"WARNING": colors.Yellow,
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"ERROR": colors.RedOrange,
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}
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fallbackColor := colors.White
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p.lineColors = make([]sdl.Color, len(p.lines))
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for _, entry := range logs {
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color, ok := levelColors[entry.Level]
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if !ok {
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color = fallbackColor
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}
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logTime := time.UnixMilli(entry.Timestamp)
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timeStr := logTime.Format("2006-01-02 15:04")
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line := fmt.Sprintf("[%s] [%s] %s", timeStr, entry.Level, entry.Message)
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p.lines = append(p.lines, line)
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p.lineColors = append(p.lineColors, color)
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}
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applicationFont := "SpaceMonoNerdFont-Regular"
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fm := fontManager.Get()
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textShader, ok := shaderManager.Get().Get("text")
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if !ok {
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return fmt.Errorf("unable to fetch text shader")
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}
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// Title texture
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titleID, titleW, titleH, err := fm.CreateStringTexture(applicationFont, "Application Logs", textShader)
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if err != nil {
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return fmt.Errorf("failed to create title texture: %w", err)
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}
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p.titleTextureID = titleID
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p.titleTextureWidth = titleW
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p.titleTextureHeight = titleH
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// Line textures
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p.lineTextureIDs = make([]uint32, len(p.lines))
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p.lineTextureWidths = make([]int32, len(p.lines))
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p.lineTextureHeights = make([]int32, len(p.lines))
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for i, line := range p.lines {
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if strings.TrimSpace(line) == "" {
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continue
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}
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texID, w, h, err := fm.CreateStringTexture(applicationFont, line, textShader)
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if err != nil {
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return fmt.Errorf("failed to create line texture: %w", err)
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}
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p.lineTextureIDs[i] = texID
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p.lineTextureWidths[i] = w
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p.lineTextureHeights[i] = h
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}
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// Hint texture
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hintText := "Arrow Keys / PgUp/PgDn to scroll | F1|2|3 to Exit"
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hintID, hintW, hintH, err := fm.CreateStringTexture(applicationFont, hintText, textShader)
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if err != nil {
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return fmt.Errorf("failed to create hint texture: %w", err)
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}
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p.hintTextureID = hintID
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p.hintTextureWidth = hintW
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p.hintTextureHeight = hintH
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return nil
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}
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func (p *LogViewerPage) HandleEvent(event *sdl.Event) error {
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switch e := (*event).(type) {
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case *sdl.KeyboardEvent:
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if e.Type == sdl.KEYDOWN {
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switch e.Keysym.Sym {
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case sdl.K_BACKSPACE:
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p.Context.NavigateTo(SETTINGS)
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case sdl.K_UP:
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p.scrollOffset -= p.lineHeight
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if p.scrollOffset < 0 {
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p.scrollOffset = 0
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}
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case sdl.K_DOWN:
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p.scrollOffset += p.lineHeight
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if p.scrollOffset > p.maxScrollOffset {
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p.scrollOffset = p.maxScrollOffset
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}
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case sdl.K_PAGEUP:
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p.scrollOffset -= p.visibleHeight
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if p.scrollOffset < 0 {
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p.scrollOffset = 0
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}
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case sdl.K_PAGEDOWN:
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p.scrollOffset += p.visibleHeight
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if p.scrollOffset > p.maxScrollOffset {
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p.scrollOffset = p.maxScrollOffset
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}
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case sdl.K_HOME:
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p.scrollOffset = 0
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case sdl.K_END:
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p.scrollOffset = p.maxScrollOffset
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}
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}
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case *sdl.MouseWheelEvent:
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p.scrollOffset -= e.Y * p.lineHeight * 3
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if p.scrollOffset < 0 {
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p.scrollOffset = 0
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}
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if p.scrollOffset > p.maxScrollOffset {
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p.scrollOffset = p.maxScrollOffset
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}
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}
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return nil
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}
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func (p *LogViewerPage) Update(dt float32) error {
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return nil
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}
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func (p *LogViewerPage) Render() error {
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config, err := db.GetConfig(p.Context.DbPtr)
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if err != nil {
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panic(err)
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}
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baseFontSize := config.StandardFontSize
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sm := shaderManager.Get()
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textShader, _ := sm.Get("text")
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titleFontSize := int32(48)
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titleScale := float32(titleFontSize) / float32(baseFontSize)
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contentFontSize := int32(24)
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contentScale := float32(contentFontSize) / float32(baseFontSize)
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hintFontSize := int32(20)
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hintScale := float32(hintFontSize) / float32(baseFontSize)
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margin := int32(40)
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lineSpacing := int32(4)
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p.lineHeight = contentFontSize + lineSpacing
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contentLeftX := 25
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// Title
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titleH := float32(p.titleTextureHeight) * titleScale
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titleW := float32(p.titleTextureWidth) * titleScale
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titleX := p.Base.ScreenCenterX - int32(titleW/2)
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titleY := p.Base.ScreenHeight - margin - int32(titleH)
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p.Base.RenderTexture(textShader, p.titleTextureID, mgl32.Vec2{float32(titleX), float32(titleY)}, mgl32.Vec2{titleW, titleH}, colors.White)
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// Hint at bottom
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hintH := float32(p.hintTextureHeight) * hintScale
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hintW := float32(p.hintTextureWidth) * hintScale
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hintX := p.Base.ScreenCenterX - int32(hintW/2)
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hintY := margin
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p.Base.RenderTexture(textShader, p.hintTextureID, mgl32.Vec2{float32(hintX), float32(hintY)}, mgl32.Vec2{hintW, hintH}, colors.Gray)
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// Content area bounds
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contentTop := titleY - margin
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contentBottom := hintY + int32(hintH) + margin
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p.visibleHeight = contentTop - contentBottom
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// Total content height
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totalContentHeight := int32(len(p.lines)) * p.lineHeight
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p.maxScrollOffset = totalContentHeight - p.visibleHeight
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if p.maxScrollOffset < 0 {
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p.maxScrollOffset = 0
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}
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// Render visible lines
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currentY := contentTop - p.lineHeight + p.scrollOffset
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for i, line := range p.lines {
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if strings.TrimSpace(line) == "" {
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currentY -= p.lineHeight
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continue
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}
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if p.lineTextureIDs[i] == 0 {
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currentY -= p.lineHeight
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continue
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}
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if currentY > contentTop || currentY+p.lineHeight < contentBottom {
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currentY -= p.lineHeight
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continue
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}
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lineW := float32(p.lineTextureWidths[i]) * contentScale
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lineH := float32(p.lineTextureHeights[i]) * contentScale
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color := colors.White
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if i < len(p.lineColors) {
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color = p.lineColors[i]
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}
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p.Base.RenderTexture(textShader, p.lineTextureIDs[i], mgl32.Vec2{float32(contentLeftX), float32(currentY)}, mgl32.Vec2{lineW, lineH}, color)
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currentY -= p.lineHeight
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}
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return nil
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}
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func (p *LogViewerPage) Destroy() error {
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gl.DeleteTextures(1, &p.titleTextureID)
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gl.DeleteTextures(1, &p.hintTextureID)
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for _, texID := range p.lineTextureIDs {
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if texID != 0 {
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gl.DeleteTextures(1, &texID)
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}
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}
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return p.Base.Destroy()
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}
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