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examples: use fontstash wrapper calls (#12718)

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Larpon 2021-12-06 21:39:43 +01:00 • committed by GitHub
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7 changed files with 145 additions and 143 deletions
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38
vlib/gg/text_rendering.c.v
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@ -2,6 +2,7 @@
// Use of this source code is governed by an MIT license that can be found in the LICENSE file.
module gg
import fontstash
import sokol.sfons
import sokol.sgl
import gx
@ -9,7 +10,7 @@ import os
struct FT {
pub:
fons &C.FONScontext
fons &fontstash.Context
font_normal int
font_bold int
font_mono int
@ -43,14 +44,10 @@ fn new_ft(c FTConfig) ?&FT {
return &FT{
fons: fons
font_normal: C.fonsAddFontMem(fons, c'sans', bytes_normal.data, bytes_normal.len,
false)
font_bold: C.fonsAddFontMem(fons, c'sans', bytes_bold.data, bytes_bold.len,
false)
font_mono: C.fonsAddFontMem(fons, c'sans', bytes_mono.data, bytes_mono.len,
false)
font_italic: C.fonsAddFontMem(fons, c'sans', bytes_italic.data, bytes_italic.len,
false)
font_normal: fons.add_font_mem('sans', bytes_normal, false)
font_bold: fons.add_font_mem('sans', bytes_bold, false)
font_mono: fons.add_font_mem('sans', bytes_mono, false)
font_italic: fons.add_font_mem('sans', bytes_italic, false)
scale: c.scale
}
} else {
@ -112,11 +109,10 @@ fn new_ft(c FTConfig) ?&FT {
debug_font_println('Font used for font_italic : $italic_path')
return &FT{
fons: fons
font_normal: C.fonsAddFontMem(fons, c'sans', bytes.data, bytes.len, false)
font_bold: C.fonsAddFontMem(fons, c'sans', bytes_bold.data, bytes_bold.len, false)
font_mono: C.fonsAddFontMem(fons, c'sans', bytes_mono.data, bytes_mono.len, false)
font_italic: C.fonsAddFontMem(fons, c'sans', bytes_italic.data, bytes_italic.len,
false)
font_normal: fons.add_font_mem('sans', bytes, false)
font_bold: fons.add_font_mem('sans', bytes_bold, false)
font_mono: fons.add_font_mem('sans', bytes_mono, false)
font_italic: fons.add_font_mem('sans', bytes_italic, false)
scale: c.scale
}
}
@ -137,12 +133,12 @@ pub fn (ctx &Context) set_cfg(cfg gx.TextCfg) {
scale := if ctx.ft.scale == 0 { f32(1) } else { ctx.ft.scale }
size := if cfg.mono { cfg.size - 2 } else { cfg.size }
ctx.ft.fons.set_size(scale * f32(size))
C.fonsSetAlign(ctx.ft.fons, int(cfg.align) | int(cfg.vertical_align))
color := C.sfons_rgba(cfg.color.r, cfg.color.g, cfg.color.b, cfg.color.a)
ctx.ft.fons.set_align(int(cfg.align) | int(cfg.vertical_align))
color := sfons.rgba(cfg.color.r, cfg.color.g, cfg.color.b, cfg.color.a)
if cfg.color.a != 255 {
sgl.load_pipeline(ctx.timage_pip)
}
C.fonsSetColor(ctx.ft.fons, color)
ctx.ft.fons.set_color(color)
ascender := f32(0.0)
descender := f32(0.0)
lh := f32(0.0)
@ -172,7 +168,7 @@ pub fn (ctx &Context) draw_text(x int, y int, text_ string, cfg gx.TextCfg) {
// }
ctx.set_cfg(cfg)
scale := if ctx.ft.scale == 0 { f32(1) } else { ctx.ft.scale }
C.fonsDrawText(ctx.ft.fons, x * scale, y * scale, &char(text_.str), 0) // TODO: check offsets/alignment
ctx.ft.fons.draw_text(x * scale, y * scale, text_) // TODO: check offsets/alignment
}
pub fn (ctx &Context) draw_text_def(x int, y int, text string) {
@ -198,7 +194,7 @@ pub fn (ctx &Context) text_width(s string) int {
return 0
}
mut buf := [4]f32{}
C.fonsTextBounds(ctx.ft.fons, 0, 0, &char(s.str), 0, &buf[0])
ctx.ft.fons.text_bounds(0, 0, s, &buf[0])
if s.ends_with(' ') {
return int((buf[2] - buf[0]) / ctx.scale) +
ctx.text_width('i') // TODO fix this in fontstash?
@ -219,7 +215,7 @@ pub fn (ctx &Context) text_height(s string) int {
return 0
}
mut buf := [4]f32{}
C.fonsTextBounds(ctx.ft.fons, 0, 0, &char(s.str), 0, &buf[0])
ctx.ft.fons.text_bounds(0, 0, s, &buf[0])
return int((buf[3] - buf[1]) / ctx.scale)
}
@ -229,6 +225,6 @@ pub fn (ctx &Context) text_size(s string) (int, int) {
return 0, 0
}
mut buf := [4]f32{}
C.fonsTextBounds(ctx.ft.fons, 0, 0, &char(s.str), 0, &buf[0])
ctx.ft.fons.text_bounds(0, 0, s, &buf[0])
return int((buf[2] - buf[0]) / ctx.scale), int((buf[3] - buf[1]) / ctx.scale)
}