gg: text_width()

medvednikov · medvednikov · commit 40da32a141a4 · 2020-07-12T01:46:21.000+02:00
diff --git a/vlib/gg/text_rendering.v b/vlib/gg/text_rendering.v
@@ -85,8 +85,13 @@ pub fn (ft &FT) flush(){
 	sfons.flush(ft.fons)
 }
 
-pub fn (ft &Context) text_width(s string) int {
-	return 0
+pub fn (ctx &Context) text_width(s string) int {
+	if !ctx.font_inited {
+		return 0
+	}
+	mut buf := [4]f32
+	C.fonsTextBounds(ctx.ft.fons, 0, 0, s.str, 0, buf)
+	return int((buf[2] - buf[0]) / ctx.scale)
 }
 
 pub fn (ft &Context) text_height(s string) int {

Original file line number	Diff line number	Diff line change
`@@ -85,8 +85,13 @@ pub fn (ft &FT) flush(){`
`85`	`85`	`sfons.flush(ft.fons)`
`86`	`86`	`}`
`87`	`87`
`88`		`-pub fn (ft &Context) text_width(s string) int {`
`89`		`- return 0`
	`88`	`+pub fn (ctx &Context) text_width(s string) int {`
	`89`	`+ if !ctx.font_inited {`
	`90`	`+ return 0`
	`91`	`+ }`
	`92`	`+ mut buf := [4]f32`
	`93`	`+ C.fonsTextBounds(ctx.ft.fons, 0, 0, s.str, 0, buf)`
	`94`	`+ return int((buf[2] - buf[0]) / ctx.scale)`
`90`	`95`	`}`
`91`	`96`
`92`	`97`	`pub fn (ft &Context) text_height(s string) int {`