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This commit is contained in:
Will Charczuk 2016-09-05 13:26:12 -07:00
parent b78f2327aa
commit 8f56e5939b
10 changed files with 105 additions and 44 deletions
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14
raster_renderer.go
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@ -28,7 +28,7 @@ type rasterRenderer struct {
i *image.RGBA
gc *drawing.RasterGraphicContext
rotateRadians float64
rotateRadians *float64
s Style
}
@ -183,34 +183,34 @@ func (rr *rasterRenderer) MeasureText(body string) Box {
Right: int(math.Ceil(r)),
Bottom: int(math.Ceil(b)),
}
if rr.rotateRadians == 0 {
if rr.rotateRadians == nil {
return textBox
}
return textBox.Rotate(rr.rotateRadians)
return textBox.Rotate(*rr.rotateRadians)
}
// SetTextRotation sets a text rotation.
func (rr *rasterRenderer) SetTextRotation(radians float64) {
rr.rotateRadians = radians
rr.rotateRadians = &radians
}
func (rr *rasterRenderer) getCoords(x, y int) (xf, yf int) {
if rr.rotateRadians == 0 {
if rr.rotateRadians == nil {
xf = x
yf = y
return
}
rr.gc.Translate(float64(x), float64(y))
rr.gc.Rotate(rr.rotateRadians)
rr.gc.Rotate(*rr.rotateRadians)
return
}
// ClearTextRotation clears text rotation.
func (rr *rasterRenderer) ClearTextRotation() {
rr.gc.SetMatrixTransform(drawing.NewIdentityMatrix())
rr.rotateRadians = 0
rr.rotateRadians = nil
}
// Save implements the interface method.