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gg: bold/mono/italic fonts

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This commit is contained in:
Alexander Medvednikov 2020-07-27 21:19:43 +02:00
parent f33d9f4f68
commit 65159b8070
3 changed files with 48 additions and 3 deletions
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46
vlib/gg/text_rendering.v
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@ -15,6 +15,9 @@ pub:
fons &C.FONScontext
font_normal int
font_bold int
font_mono int
font_italic int
scale f32 = 1.0
}
@ -36,22 +39,59 @@ fn new_ft(c FTConfig) ?&FT{
println('failed to load font "$c.font_path"')
return none
}
bold_path := 'SFNS-bold.ttf'// c.font_path.replace('.ttf', '-bold.ttf')
bytes_bold := os.read_bytes(bold_path) or {
println('failed to load font "$bold_path"')
return none
}
mono_path := '/System/Library/Fonts/SFNSMono.ttf'// c.font_path.replace('.ttf', '-bold.ttf')
bytes_mono:= os.read_bytes(mono_path) or {
println('failed to load font "$mono_path"')
return none
}
italic_path := '/System/Library/Fonts/SFNSItalic.ttf'
bytes_italic:= os.read_bytes(italic_path) or {
println('failed to load font "$italic_path"')
return none
}
fons := sfons.create(512, 512, 1)
return &FT{
fons : fons
font_normal: C.fonsAddFontMem(fons, 'sans', bytes.data, bytes.len, false)
font_bold: C.fonsAddFontMem(fons, 'sans', bytes_bold.data, bytes_bold.len, false)
font_mono: C.fonsAddFontMem(fons, 'sans', bytes_mono.data, bytes_mono.len, false)
font_italic: C.fonsAddFontMem(fons, 'sans', bytes_italic.data, bytes_italic.len, false)
scale: c.scale
}
}
pub fn (ctx &Context) draw_text(x, y int, text string, cfg gx.TextCfg) {
pub fn (ctx &Context) draw_text(x, y int, text_ string, cfg gx.TextCfg) {
if !ctx.font_inited {
return
}
ctx.ft.fons.set_font(ctx.ft.font_normal)
//text := text_.trim_space() // TODO remove/optimize
mut text := text_
if text.contains('\t') {
text = text.replace('\t', ' ')
}
if cfg.bold {
ctx.ft.fons.set_font(ctx.ft.font_bold)
}
else if cfg.mono {
ctx.ft.fons.set_font(ctx.ft.font_mono)
}
else if cfg.italic {
ctx.ft.fons.set_font(ctx.ft.font_italic)
}
else {
ctx.ft.fons.set_font(ctx.ft.font_normal)
}
scale := if ctx.ft.scale == 0 { f32(1) } else { ctx.ft.scale }
size := if cfg.size == 0 { gg.default_font_size } else { cfg.size }
mut size := if cfg.size == 0 { gg.default_font_size } else { cfg.size }
if cfg.mono {
size -= 2
}
ctx.ft.fons.set_size(scale * f32(size))
if cfg.align == gx.align_right {
C.fonsSetAlign(ctx.ft.fons, C.FONS_ALIGN_RIGHT | C.FONS_ALIGN_TOP)