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LoadFontface returns an error

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This commit is contained in:
flopp 2016-03-05 20:46:55 +01:00
parent 021242611d
commit 646568c788
6 changed files with 24 additions and 13 deletions
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2
README.md
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@ -91,7 +91,7 @@ DrawStringWrapped(s string, x, y, ax, ay, width, lineSpacing float64, align Alig
MeasureString(s string) (w, h float64) MeasureString(s string) (w, h float64)
WordWrap(s string, w float64) []string WordWrap(s string, w float64) []string
SetFontFace(fontFace font.Face) SetFontFace(fontFace font.Face)
LoadFontFace(path string, points float64) LoadFontFace(path string, points float64) error
``` ```
## Color Functions ## Color Functions

9
context.go
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@ -555,14 +555,13 @@ func (dc *Context) SetFontFace(fontFace font.Face) {
dc.fontFace = fontFace dc.fontFace = fontFace
} }
func (dc *Context) LoadFontFace(path string, points float64) { func (dc *Context) LoadFontFace(path string, points float64) error {
if face, err := loadFontFace(path, points); err == nil { face, err := loadFontFace(path, points)
if err == nil {
dc.fontFace = face dc.fontFace = face
dc.fontHeight = points * 72 / 96 dc.fontHeight = points * 72 / 96
} else {
dc.fontFace = basicfont.Face7x13
dc.fontHeight = 13
} }
return err
} }
func (dc *Context) drawString(im *image.RGBA, s string, x, y float64) { func (dc *Context) drawString(im *image.RGBA, s string, x, y float64) {

4
examples/meme.go
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@ -7,7 +7,9 @@ func main() {
dc := gg.NewContext(S, S) dc := gg.NewContext(S, S)
dc.SetRGB(1, 1, 1) dc.SetRGB(1, 1, 1)
dc.Clear() dc.Clear()
dc.LoadFontFace("/Library/Fonts/Impact.ttf", 96) if err := dc.LoadFontFace("/Library/Fonts/Impact.ttf", 96); err != nil {
panic(err)
}
dc.SetRGB(0, 0, 0) dc.SetRGB(0, 0, 0)
s := "ONE DOES NOT SIMPLY" s := "ONE DOES NOT SIMPLY"
n := 6 // "stroke" size n := 6 // "stroke" size

8
examples/scatter.go
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@ -54,9 +54,13 @@ func main() {
// draw text // draw text
dc.Identity() dc.Identity()
dc.SetRGB(0, 0, 0) dc.SetRGB(0, 0, 0)
dc.LoadFontFace("/Library/Fonts/Arial Bold.ttf", 24) if err := dc.LoadFontFace("/Library/Fonts/Arial Bold.ttf", 24); err != nil {
panic(err)
}
dc.DrawStringAnchored("Chart Title", S/2, P/2, 0.5, 0.5) dc.DrawStringAnchored("Chart Title", S/2, P/2, 0.5, 0.5)
dc.LoadFontFace("/Library/Fonts/Arial.ttf", 18) if err := dc.LoadFontFace("/Library/Fonts/Arial.ttf", 18); err != nil {
panic(err)
}
dc.DrawStringAnchored("X Axis Title", S/2, S-P/2, 0.5, 0.5) dc.DrawStringAnchored("X Axis Title", S/2, S-P/2, 0.5, 0.5)
dc.SavePNG("out.png") dc.SavePNG("out.png")
} }

4
examples/text.go
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@ -8,7 +8,9 @@ func main() {
dc.SetRGB(1, 1, 1) dc.SetRGB(1, 1, 1)
dc.Clear() dc.Clear()
dc.SetRGB(0, 0, 0) dc.SetRGB(0, 0, 0)
dc.LoadFontFace("/Library/Fonts/Arial.ttf", 96) if err := dc.LoadFontFace("/Library/Fonts/Arial.ttf", 96); err != nil {
panic(err)
}
dc.DrawStringAnchored("Hello, world!", S/2, S/2, 0.5, 0.5) dc.DrawStringAnchored("Hello, world!", S/2, S/2, 0.5, 0.5)
dc.SavePNG("out.png") dc.SavePNG("out.png")
} }

8
examples/wrap.go
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@ -18,7 +18,9 @@ func main() {
dc.SetLineWidth(3) dc.SetLineWidth(3)
dc.Stroke() dc.Stroke()
dc.SetRGB(0, 0, 0) dc.SetRGB(0, 0, 0)
dc.LoadFontFace("/Library/Fonts/Arial Bold.ttf", 18) if err := dc.LoadFontFace("/Library/Fonts/Arial Bold.ttf", 18); err != nil {
panic(err)
}
dc.DrawStringWrapped("UPPER LEFT", P, P, 0, 0, 0, 1.5, gg.AlignLeft) dc.DrawStringWrapped("UPPER LEFT", P, P, 0, 0, 0, 1.5, gg.AlignLeft)
dc.DrawStringWrapped("UPPER RIGHT", W-P, P, 1, 0, 0, 1.5, gg.AlignRight) dc.DrawStringWrapped("UPPER RIGHT", W-P, P, 1, 0, 0, 1.5, gg.AlignRight)
dc.DrawStringWrapped("BOTTOM LEFT", P, H-P, 0, 1, 0, 1.5, gg.AlignLeft) dc.DrawStringWrapped("BOTTOM LEFT", P, H-P, 0, 1, 0, 1.5, gg.AlignLeft)
@ -27,7 +29,9 @@ func main() {
dc.DrawStringWrapped("LOWER MIDDLE", W/2, H-P, 0.5, 1, 0, 1.5, gg.AlignCenter) dc.DrawStringWrapped("LOWER MIDDLE", W/2, H-P, 0.5, 1, 0, 1.5, gg.AlignCenter)
dc.DrawStringWrapped("LEFT MIDDLE", P, H/2, 0, 0.5, 0, 1.5, gg.AlignLeft) dc.DrawStringWrapped("LEFT MIDDLE", P, H/2, 0, 0.5, 0, 1.5, gg.AlignLeft)
dc.DrawStringWrapped("RIGHT MIDDLE", W-P, H/2, 1, 0.5, 0, 1.5, gg.AlignRight) dc.DrawStringWrapped("RIGHT MIDDLE", W-P, H/2, 1, 0.5, 0, 1.5, gg.AlignRight)
dc.LoadFontFace("/Library/Fonts/Arial.ttf", 12) if err := dc.LoadFontFace("/Library/Fonts/Arial.ttf", 12); err != nil {
panic(err)
}
dc.DrawStringWrapped(TEXT, W/2-P, H/2-P, 1, 1, W/3, 1.75, gg.AlignLeft) dc.DrawStringWrapped(TEXT, W/2-P, H/2-P, 1, 1, W/3, 1.75, gg.AlignLeft)
dc.DrawStringWrapped(TEXT, W/2+P, H/2-P, 0, 1, W/3, 2, gg.AlignLeft) dc.DrawStringWrapped(TEXT, W/2+P, H/2-P, 0, 1, W/3, 2, gg.AlignLeft)
dc.DrawStringWrapped(TEXT, W/2-P, H/2+P, 1, 0, W/3, 2.25, gg.AlignLeft) dc.DrawStringWrapped(TEXT, W/2-P, H/2+P, 1, 0, W/3, 2.25, gg.AlignLeft)