diff --git a/font/main.go b/font/main.go
index 2f2455a..7b3ffa4 100644
--- a/font/main.go
+++ b/font/main.go
@@ -4,2 +3,0 @@ import (
- "fmt"
- adapter "grim/adapters"
@@ -9,0 +8,3 @@ import (
+ "io/ioutil"
+ "os"
+ "path/filepath"
@@ -11,0 +13 @@ import (
+ "strconv"
@@ -19,7 +20,0 @@ import (
-func sortByLength(strings []string) []string {
- sort.Slice(strings, func(i, j int) bool {
- return len(strings[i]) < len(strings[j])
- })
- return strings
-}
-
@@ -27 +22 @@ func sortByLength(strings []string) []string {
-func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem) string {
+func GetFontPath(fontName string, bold int, italic bool) string {
@@ -33 +27,0 @@ func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem)
- paths := sortByLength(fs.Paths)
@@ -36 +30 @@ func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem)
- fontPath := tryLoadSystemFontWithBestWeight(font, bold, italic, paths)
+ fontPath := tryLoadSystemFontWithBestWeight(font, bold, italic)
@@ -45 +39 @@ func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem)
- fontPath = tryLoadSystemFontWithBestWeight("Arial", bold, italic, paths)
+ fontPath = tryLoadSystemFontWithBestWeight("Arial", bold, italic)
@@ -47 +41 @@ func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem)
- fontPath = tryLoadSystemFontWithBestWeight("Andale Mono", bold, italic, paths)
+ fontPath = tryLoadSystemFontWithBestWeight("Andale Mono", bold, italic)
@@ -49 +43 @@ func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem)
- fontPath = tryLoadSystemFontWithBestWeight("Georgia", bold, italic, paths)
+ fontPath = tryLoadSystemFontWithBestWeight("Georgia", bold, italic)
@@ -52,2 +45,0 @@ func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem)
- fmt.Println(fontPath)
-
@@ -61 +53 @@ func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem)
- return tryLoadSystemFontWithBestWeight("Georgia", bold, italic, paths)
+ return tryLoadSystemFontWithBestWeight("Georgia", bold, italic)
@@ -64 +56 @@ func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem)
-func tryLoadSystemFontWithBestWeight(fontName string, desiredWeight int, italic bool, paths []string) string {
+func tryLoadSystemFontWithBestWeight(fontName string, desiredWeight int, italic bool) string {
@@ -75 +67 @@ func tryLoadSystemFontWithBestWeight(fontName string, desiredWeight int, italic
- availableWeights := getAvailableWeights(fontName, italic, paths)
+ availableWeights := getAvailableWeights(fontName, italic)
@@ -86 +78 @@ func tryLoadSystemFontWithBestWeight(fontName string, desiredWeight int, italic
- for _, v := range paths {
+ for _, v := range allFonts {
@@ -95 +87 @@ func tryLoadSystemFontWithBestWeight(fontName string, desiredWeight int, italic
-func getAvailableWeights(fontName string, italic bool, paths []string) []int {
+func getAvailableWeights(fontName string, italic bool) []int {
@@ -105 +97 @@ func getAvailableWeights(fontName string, italic bool, paths []string) []int {
- if tryLoadFontExists(fontWithWeight, paths) {
+ if tryLoadFontExists(fontWithWeight) {
@@ -113,3 +105 @@ func getAvailableWeights(fontName string, italic bool, paths []string) []int {
-// var allFonts []string
-
-func tryLoadFontExists(fontWithWeight string, paths []string) bool {
+func tryLoadFontExists(fontWithWeight string) bool {
@@ -121 +111 @@ func tryLoadFontExists(fontWithWeight string, paths []string) bool {
- for _, v := range paths {
+ for _, v := range allFonts {
@@ -169,3 +159,7 @@ func getWeightName(weight int) string {
-func LoadFont(fontName string, fontSize int, bold int, italic bool, fs *adapter.FileSystem) (font.Face, error) {
- // Use a TrueType font file for the specified font name
- fontFile := GetFontPath(fontName, bold, italic, fs)
+var allFonts = getSystemFonts()
+
+func sortByLength(strings []string) {
+ sort.Slice(strings, func(i, j int) bool {
+ return len(strings[i]) < len(strings[j])
+ })
+}
@@ -173 +167,22 @@ func LoadFont(fontName string, fontSize int, bold int, italic bool, fs *adapter.
- // fontFile := fs.FindFile(fontName)
+func GetFontSize(css map[string]string) float32 {
+ fL := len(css["font-size"])
+
+ var fs float32 = 16
+
+ if fL > 0 {
+ if css["font-size"][fL-2:] == "px" {
+ fs64, _ := strconv.ParseFloat(css["font-size"][0:fL-2], 32)
+ fs = float32(fs64)
+ }
+ if css["font-size"][fL-2:] == "em" {
+ fs64, _ := strconv.ParseFloat(css["font-size"][0:fL-2], 32)
+ fs = float32(fs64)
+ }
+ }
+
+ return fs
+}
+
+func LoadFont(fontName string, fontSize int, bold int, italic bool) (font.Face, error) {
+ // Use a TrueType font file for the specified font name
+ fontFile := GetFontPath(fontName, bold, italic)
@@ -176 +191 @@ func LoadFont(fontName string, fontSize int, bold int, italic bool, fs *adapter.
- fontData, err := fs.ReadFile(fontFile)
+ fontData, err := os.ReadFile(fontFile)
@@ -224,0 +240,79 @@ func MeasureSpace(t *element.Text) int {
+func getSystemFonts() []string {
+ var fontPaths []string
+
+ switch runtime.GOOS {
+ case "windows":
+ fontPaths = append(fontPaths, getWindowsFontPaths()...)
+ case "darwin":
+ fontPaths = append(fontPaths, getMacFontPaths()...)
+ case "linux":
+ fontPaths = append(fontPaths, getLinuxFontPaths()...)
+ default:
+ return nil
+ }
+
+ sortByLength(fontPaths)
+ return fontPaths
+}
+
+func getWindowsFontPaths() []string {
+ var fontPaths []string
+
+ // System Fonts
+ systemFontsDir := "C:\\Windows\\Fonts"
+ getFontsRecursively(systemFontsDir, &fontPaths)
+
+ // User Fonts
+ userFontsDir := os.ExpandEnv("%APPDATA%\\Microsoft\\Windows\\Fonts")
+ getFontsRecursively(userFontsDir, &fontPaths)
+
+ return fontPaths
+}
+
+func getMacFontPaths() []string {
+ var fontPaths []string
+
+ // System Fonts
+ systemFontsDirs := []string{"/System/Library/Fonts", "/Library/Fonts"}
+ for _, dir := range systemFontsDirs {
+ getFontsRecursively(dir, &fontPaths)
+ }
+
+ // User Fonts
+ userFontsDir := filepath.Join(os.Getenv("HOME"), "Library/Fonts")
+ getFontsRecursively(userFontsDir, &fontPaths)
+ return fontPaths
+}
+
+func getLinuxFontPaths() []string {
+ var fontPaths []string
+
+ // System Fonts
+ systemFontsDirs := []string{"/usr/share/fonts", "/usr/local/share/fonts"}
+ for _, dir := range systemFontsDirs {
+ getFontsRecursively(dir, &fontPaths)
+ }
+
+ // User Fonts
+ userFontsDir := filepath.Join(os.Getenv("HOME"), ".fonts")
+ getFontsRecursively(userFontsDir, &fontPaths)
+
+ return fontPaths
+}
+
+func getFontsRecursively(dir string, fontPaths *[]string) {
+ files, err := ioutil.ReadDir(dir)
+ if err != nil {
+ return
+ }
+
+ for _, file := range files {
+ path := filepath.Join(dir, file.Name())
+ if file.IsDir() {
+ getFontsRecursively(path, fontPaths)
+ } else if strings.HasSuffix(strings.ToLower(file.Name()), ".ttf") {
+ *fontPaths = append(*fontPaths, path)
+ }
+ }
+}
+
package font
import (
"fmt"
adapter "grim/adapters"
"grim/element"
"image"
"image/color"
"image/draw"
"runtime"
"sort"
"strings"
"github.com/golang/freetype/truetype"
"golang.org/x/image/font"
"golang.org/x/image/math/fixed"
)
func sortByLength(strings []string) []string {
sort.Slice(strings, func(i, j int) bool {
return len(strings[i]) < len(strings[j])
})
return strings
}
// LoadSystemFont loads a font from the system fonts directory or loads a specific font by name
func GetFontPath(fontName string, bold int, italic bool, fs *adapter.FileSystem) string {
if len(fontName) == 0 {
fontName = "serif"
}
fonts := strings.Split(fontName, ",")
paths := sortByLength(fs.Paths)
for _, font := range fonts {
font = strings.TrimSpace(font)
fontPath := tryLoadSystemFontWithBestWeight(font, bold, italic, paths)
if fontPath != "" {
return fontPath
}
// Check special font families only if it's the first font in the list
switch font {
case "sans-serif":
fontPath = tryLoadSystemFontWithBestWeight("Arial", bold, italic, paths)
case "monospace":
fontPath = tryLoadSystemFontWithBestWeight("Andale Mono", bold, italic, paths)
case "serif":
fontPath = tryLoadSystemFontWithBestWeight("Georgia", bold, italic, paths)
}
fmt.Println(fontPath)
if fontPath != "" {
return fontPath
}
}
// Default to serif if none of the specified fonts are found
return tryLoadSystemFontWithBestWeight("Georgia", bold, italic, paths)
}
func tryLoadSystemFontWithBestWeight(fontName string, desiredWeight int, italic bool, paths []string) string {
font := fontName
if italic {
font += " Italic"
}
slash := "/"
if runtime.GOOS == "windows" {
slash = "\\"
}
availableWeights := getAvailableWeights(fontName, italic, paths)
closestWeight := findClosestWeight(availableWeights, desiredWeight)
// Get the closest weight name and attempt to load the font
weightName := getWeightName(closestWeight)
fontWithWeight := fontName + " " + weightName
fontWithWeight = strings.TrimSpace(fontWithWeight)
if italic {
fontWithWeight += " Italic"
}
for _, v := range paths {
if strings.Contains(strings.ToLower(v), strings.ToLower(slash+fontWithWeight)) {
return v
}
}
return ""
}
func getAvailableWeights(fontName string, italic bool, paths []string) []int {
weightMappings := []int{100, 200, 300, 400, 500, 600, 700, 800, 900}
availableWeights := []int{}
for _, weight := range weightMappings {
weightName := getWeightName(weight)
fontWithWeight := strings.TrimSpace(fontName + " " + weightName)
if italic {
fontWithWeight += " Italic"
}
if tryLoadFontExists(fontWithWeight, paths) {
availableWeights = append(availableWeights, weight)
}
}
return availableWeights
}
// var allFonts []string
func tryLoadFontExists(fontWithWeight string, paths []string) bool {
slash := "/"
if runtime.GOOS == "windows" {
slash = "\\"
}
for _, v := range paths {
if strings.Contains(strings.ToLower(v), strings.ToLower(slash+fontWithWeight)) {
return true
}
}
return false
}
func findClosestWeight(availableWeights []int, desiredWeight int) int {
if len(availableWeights) == 0 {
return 400 // Default to "Regular" if no weights are available
}
closest := availableWeights[0]
for _, weight := range availableWeights {
if abs(weight-desiredWeight) < abs(closest-desiredWeight) {
closest = weight
}
}
return closest
}
func getWeightName(weight int) string {
switch weight {
case 100:
return "Thin"
case 200:
return "ExtraLight"
case 300:
return "Light"
case 400:
return ""
case 500:
return "Medium"
case 600:
return "SemiBold"
case 700:
return "Bold"
case 800:
return "ExtraBold"
case 900:
return "Black"
default:
return ""
}
}
func LoadFont(fontName string, fontSize int, bold int, italic bool, fs *adapter.FileSystem) (font.Face, error) {
// Use a TrueType font file for the specified font name
fontFile := GetFontPath(fontName, bold, italic, fs)
// fontFile := fs.FindFile(fontName)
// Read the font file
fontData, err := fs.ReadFile(fontFile)
if err != nil {
return nil, err
}
// Parse the TrueType font data
fnt, err := truetype.Parse(fontData)
if err != nil {
return nil, err
}
options := truetype.Options{
Size: float64(fontSize),
DPI: 72,
Hinting: font.HintingNone,
}
// Create a new font face with the specified size
return truetype.NewFace(fnt, &options), nil
}
func MeasureText(t *element.Text, text string) int {
var width fixed.Int26_6
for _, runeValue := range text {
if runeValue == ' ' {
// Handle spaces separately, add word spacing
width += fixed.I(t.WordSpacing)
} else {
fnt := *t.Font
adv, ok := fnt.GlyphAdvance(runeValue)
if !ok {
continue
}
// Update the total width with the glyph advance and bounds
width += adv + fixed.I(t.LetterSpacing)
}
}
return width.Round()
}
func MeasureSpace(t *element.Text) int {
fnt := *t.Font
adv, _ := fnt.GlyphAdvance(' ')
return adv.Round()
}
func Render(t *element.Text) (*image.RGBA, int) {
if t.LineHeight == 0 {
t.LineHeight = t.EM + 3
}
width := MeasureText(t, t.Text+" ")
// Use fully transparent color for the background
img := image.NewRGBA(image.Rect(0, 0, width, t.LineHeight))
// fmt.Println(t.Width, t.LineHeight, (len(lines)))
r, g, b, a := t.Color.RGBA()
draw.Draw(img, img.Bounds(), &image.Uniform{color.RGBA{uint8(r), uint8(g), uint8(b), uint8(0)}}, image.Point{}, draw.Over)
// fmt.Println(int(t.Font.Metrics().Ascent))
dot := fixed.Point26_6{X: fixed.I(0), Y: (fixed.I(t.LineHeight+(t.EM/2)) / 2)}
dr := &font.Drawer{
Dst: img,
Src: &image.Uniform{color.RGBA{uint8(r), uint8(g), uint8(b), uint8(a)}},
Face: *t.Font,
Dot: dot,
}
drawn := drawString(*t, dr, t.Text, width, img)
return drawn, width
}
func drawString(t element.Text, dr *font.Drawer, v string, lineWidth int, img *image.RGBA) *image.RGBA {
underlinePosition := dr.Dot
for _, ch := range v {
if ch == ' ' {
// Handle spaces separately, add word spacing
dr.Dot.X += fixed.I(t.WordSpacing)
} else {
dr.DrawString(string(ch))
dr.Dot.X += fixed.I(t.LetterSpacing)
}
}
if t.Underlined || t.Overlined || t.LineThrough {
underlinePosition.X = 0
baseLineY := underlinePosition.Y
fnt := *t.Font
descent := fnt.Metrics().Descent
if t.Underlined {
underlinePosition.Y = baseLineY + descent
underlinePosition.Y = (underlinePosition.Y / 100) * 97
drawLine(img, underlinePosition, fixed.Int26_6(lineWidth), t.DecorationThickness, t.DecorationColor)
}
if t.LineThrough {
underlinePosition.Y = baseLineY - (descent)
drawLine(img, underlinePosition, fixed.Int26_6(lineWidth), t.DecorationThickness, t.DecorationColor)
}
if t.Overlined {
underlinePosition.Y = baseLineY - descent*3
drawLine(img, underlinePosition, fixed.Int26_6(lineWidth), t.DecorationThickness, t.DecorationColor)
}
}
return img
}
func drawLine(img draw.Image, start fixed.Point26_6, width fixed.Int26_6, thickness int, col color.Color) {
// Bresenham's line algorithm
x0, y0 := start.X.Round(), start.Y.Round()
x1 := x0 + int(width)
y1 := y0
dx := abs(x1 - x0)
dy := abs(y1 - y0)
sx, sy := 1, 1
if x0 > x1 {
sx = -1
}
if y0 > y1 {
sy = -1
}
err := dx - dy
for {
for i := 0; i < thickness; i++ {
img.Set(x0, (y0-(thickness/2))+i, col)
}
if x0 == x1 && y0 == y1 {
break
}
e2 := 2 * err
if e2 > -dy {
err -= dy
x0 += sx
}
if e2 < dx {
err += dx
y0 += sy
}
}
}
func abs(x int) int {
if x < 0 {
return -x
}
return x
}
func Min(a, b float32) float32 {
if a < b {
return a
} else {
return b
}
}