Example #1
0
func drawsq(b draw.Image, p image.Point, ptx int) {
	var r image.Rectangle
	r.Min = p
	r.Max.X = r.Min.X + pcsz
	r.Max.Y = r.Min.Y + pcsz
	draw.Draw(b, r, image.Black, image.ZP)
	draw.Draw(b, r.Inset(1), txpix[ptx], image.ZP)
}
Example #2
0
func drawsq(b *draw.Image, p image.Point, ptx int) {
	var r image.Rectangle
	r.Min = p
	r.Max.X = r.Min.X + pcsz
	r.Max.Y = r.Min.Y + pcsz
	b.Draw(r, display.Black, nil, image.ZP)
	b.Draw(r.Inset(1), tx[ptx], nil, image.ZP)
}
Example #3
0
func setpiece(p *Piece) {
	bb.Draw(bb.R, display.White, nil, image.ZP)
	bbmask.Draw(bb.R, display.Transparent, nil, image.ZP)
	br = image.Rect(0, 0, 0, 0)
	br2 = br
	piece = p
	if p == nil {
		return
	}
	var op image.Point
	var r image.Rectangle
	r.Min = bb.R.Min
	for i, pt := range p.d {
		r.Min.X += pt.X * pcsz
		r.Min.Y += pt.Y * pcsz
		r.Max.X = r.Min.X + pcsz
		r.Max.Y = r.Min.Y + pcsz
		if i == 0 {
			bb.Draw(r, display.Black, nil, image.ZP)
			bb.Draw(r.Inset(1), tx[piece.tx], nil, image.ZP)
			bbmask.Draw(r, display.Opaque, nil, image.ZP)
			op = r.Min
		} else {
			bb.Draw(r, bb, nil, op)
			bbmask.Draw(r, bbmask, nil, op)
		}
		if br.Max.X < r.Max.X {
			br.Max.X = r.Max.X
		}
		if br.Max.Y < r.Max.Y {
			br.Max.Y = r.Max.Y
		}
	}
	br.Max = br.Max.Sub(bb.R.Min)
	delta := image.Pt(0, DY)
	br2.Max = br.Max.Add(delta)
	r = br.Add(bb2.R.Min)
	r2 := br2.Add(bb2.R.Min)
	bb2.Draw(r2, display.White, nil, image.ZP)
	bb2.Draw(r.Add(delta), bb, nil, bb.R.Min)
	bb2mask.Draw(r2, display.Transparent, nil, image.ZP)
	bb2mask.Draw(r, display.Opaque, bbmask, bb.R.Min)
	bb2mask.Draw(r.Add(delta), display.Opaque, bbmask, bb.R.Min)
}
Example #4
0
func setpiece(p *Piece) {
	draw.Draw(bb, bbr, image.White, image.ZP)
	draw.Draw(bbmask, bbr, image.Transparent, image.ZP)
	br = image.Rect(0, 0, 0, 0)
	br2 = br
	piece = p
	if p == nil {
		return
	}
	var op image.Point
	var r image.Rectangle
	r.Min = bbr.Min
	for i, pt := range p.d {
		r.Min.X += pt.X * pcsz
		r.Min.Y += pt.Y * pcsz
		r.Max.X = r.Min.X + pcsz
		r.Max.Y = r.Min.Y + pcsz
		if i == 0 {
			draw.Draw(bb, r, image.Black, image.ZP)
			draw.Draw(bb, r.Inset(1), txpix[piece.tx], image.ZP)
			draw.Draw(bbmask, r, image.Opaque, image.ZP)
			op = r.Min
		} else {
			draw.Draw(bb, r, bb, op)
			draw.Draw(bbmask, r, bbmask, op)
		}
		if br.Max.X < r.Max.X {
			br.Max.X = r.Max.X
		}
		if br.Max.Y < r.Max.Y {
			br.Max.Y = r.Max.Y
		}
	}
	br.Max = br.Max.Sub(bbr.Min)
	delta := image.Pt(0, DY)
	br2.Max = br.Max.Add(delta)
	r = br.Add(bb2r.Min)
	r2 := br2.Add(bb2r.Min)
	draw.Draw(bb2, r2, image.White, image.ZP)
	draw.Draw(bb2, r.Add(delta), bb, bbr.Min)
	draw.Draw(bb2mask, r2, image.Transparent, image.ZP)
	draw.DrawMask(bb2mask, r, image.Opaque, bbr.Min, bbmask, image.ZP, draw.Over)
	draw.DrawMask(bb2mask, r.Add(delta), image.Opaque, bbr.Min, bbmask, image.ZP, draw.Over)
}
Example #5
0
// Returns a sub-image of the input image.  The bounding rectangle is the
// smallest possible rectangle that includes all pixels that have alpha > 0,
// with one pixel of border on all sides.
func minimalSubImage(src image.Image) *subImage {
	bounds := src.Bounds()
	var new_bounds image.Rectangle
	new_bounds.Max = bounds.Min
	new_bounds.Min = bounds.Max
	for x := bounds.Min.X; x <= bounds.Max.X; x++ {
		for y := bounds.Min.Y; y <= bounds.Max.Y; y++ {
			c := src.At(x, y)
			_, _, _, a := c.RGBA()
			if a > 0 {
				if x < new_bounds.Min.X {
					new_bounds.Min.X = x
				}
				if y < new_bounds.Min.Y {
					new_bounds.Min.Y = y
				}
				if x > new_bounds.Max.X {
					new_bounds.Max.X = x
				}
				if y > new_bounds.Max.Y {
					new_bounds.Max.Y = y
				}
			}
		}
	}

	// // We want one row/col of boundary between characters so that we don't get
	// // annoying artifacts
	new_bounds.Min.X--
	new_bounds.Min.Y--
	new_bounds.Max.X++
	new_bounds.Max.Y++

	if new_bounds.Min.X > new_bounds.Max.X || new_bounds.Min.Y > new_bounds.Max.Y {
		new_bounds = image.Rect(0, 0, 0, 0)
	}

	return &subImage{src, new_bounds}
}
Example #6
0
// Add finds a position for the given image in the atlas and copies the image
// there. It returns the new sub-image. If there is no more space in the atlas,
// it returns an error.
func (a *Atlas) Add(id string, img image.Image) (SubImage, error) {
	// determine the position of the new image
	rect, err := a.packer.Insert(img.Bounds().Dx(), img.Bounds().Dy())
	if err != nil {
		return SubImage{}, errors.New("unable to add image to atlas: " + err.Error())
	}
	var bounds image.Rectangle
	bounds.Min = a.Image.Bounds().Min.Add(image.Pt(rect.X, rect.Y))
	bounds.Max = bounds.Min.Add(image.Pt(rect.Width, rect.Height))

	// copy the image data into the atlas
	draw.Draw(a.Image, bounds, img, img.Bounds().Min, draw.Src)

	sub := SubImage{
		Image: subImage{
			a.Image,
			bounds,
		},
		ID: id,
	}
	a.SubImages = append(a.SubImages, sub)

	return sub, nil
}
Example #7
0
func (f *Frame) Insert(r []rune, p0 uint64) {
	if p0 > uint64(f.nchars) || len(r) == 0 || f.Background == nil {
		return
	}

	var rect image.Rectangle
	var col, tcol *draw.Image

	pts := make([]points, 0)

	n0 := f.findbox(0, 0, p0)
	cn0 := p0
	nn0 := n0
	pt0 := f.ptofcharnb(p0, n0)
	ppt0 := pt0
	opt0 := pt0
	pt1 := f.bxscan(r, &ppt0)
	ppt1 := pt1
	b := f.box[n0]

	if n0 < f.nbox {
		f.cklinewrap(&pt0, b)
		f.cklinewrap0(&ppt1, b)
	}
	f.modified = true
	/*
	 * ppt0 and ppt1 are start and end of insertion as they will appear when
	 * insertion is complete. pt0 is current location of insertion position
	 * (p0); pt1 is terminal point (without line wrap) of insertion.
	 */
	if f.p0 == f.p1 {
		f.Tick(f.Ptofchar(f.p0), false)
	}

	/*
	 * Find point where old and new x's line up
	 * Invariants:
	 *	pt0 is where the next box (b, n0) is now
	 *	pt1 is where it will be after the insertion
	 * If pt1 goes off the rectangle, we can toss everything from there on
	 */
	npts := 0
	for ; pt1.X != pt0.X && pt1.Y != f.Rect.Max.Y && n0 < f.nbox; npts++ {
		b := f.box[n0]
		f.cklinewrap(&pt0, b)
		f.cklinewrap0(&pt1, b)

		if b.Nrune > 0 {
			n, fits := f.canfit(pt1, b)
			if !fits {
				panic("frame.canfit == 0")
			}
			if n != b.Nrune {
				f.splitbox(uint64(n0), uint64(n))
				b = f.box[n0]
			}
		}
		if npts == nalloc {
			pts = append(pts, make([]points, npts+DELTA)...)
			nalloc += DELTA
			b = f.box[n0]
		}
		pts[npts].pt0 = pt0
		pts[npts].pt1 = pt1
		if pt1.Y == f.Rect.Max.Y {
			break
		}
		f.advance(&pt0, b)
		pt1.X += f.newwid(pt1, b)
		cn0 += uint64(nrune(b))
		n0++
	}

	if pt1.Y > f.Rect.Max.Y {
		panic("frame.Insert pt1 too far")
	}
	if pt1.Y == f.Rect.Max.Y && n0 < f.nbox {
		f.nchars -= f.strlen(n0)
		f.delbox(n0, f.nbox-1)
	}
	if n0 == f.nbox {
		div := f.Font.Height
		if pt1.X > f.Rect.Min.X {
			div++
		}
		f.nlines = (pt1.Y - f.Rect.Min.Y) / div
	} else if pt1.Y != pt0.Y {
		y := f.Rect.Max.Y
		q0 := pt0.Y + f.Font.Height
		q1 := pt1.Y + f.Font.Height
		f.nlines += (q1 - q0) / f.Font.Height
		if f.nlines > f.maxlines {
			f.chop(ppt1, p0, nn0)
		}
		if pt1.Y < y {
			rect = f.Rect
			rect.Min.Y = q1
			rect.Max.Y = y
			if q1 < y {
				f.Background.Draw(rect, f.Background, nil, image.Pt(f.Rect.Min.X, q0))
			}
			rect.Min = pt1
			rect.Max.X = pt1.X + (f.Rect.Max.X - pt0.X)
			rect.Max.Y += q1
			f.Background.Draw(rect, f.Background, nil, pt0)
		}
	}

	/*
	 * Move the old stuff down to make room.  The loop will move the stuff
	 * between the insertion and the point where the x's lined up.
	 * The draw()s above moved everything down after the point they lined up.
	 */
	y := 0
	if pt1.Y == f.Rect.Max.Y {
		y = pt1.Y
	}
	for n0 = n0 - 1; npts >= 0; n0-- {
		b := f.box[n0]
		pt := pts[npts].pt1

		if b.Nrune > 0 {
			rect.Min = pt
			rect.Max = rect.Min
			rect.Max.X += b.Wid
			rect.Max.Y += f.Font.Height

			f.Background.Draw(rect, f.Background, nil, pts[npts].pt0)
			/* clear bit hanging off right */
			if npts == 0 && pt.Y > pt0.Y {
				rect.Min = opt0
				rect.Max = opt0
				rect.Max.X = f.Rect.Max.X
				rect.Max.Y += f.Font.Height

				if f.p0 <= cn0 && cn0 < f.p1 { /* b+1 is inside selection */
					col = f.Cols[colHigh]
				} else {
					col = f.Cols[colBack]
				}
				f.Background.Draw(rect, col, nil, rect.Min)
			} else if pt.Y < y {
				rect.Min = pt
				rect.Max = pt
				rect.Min.X += b.Wid
				rect.Max.X = f.Rect.Max.X
				rect.Max.Y += f.Font.Height

				if f.p0 <= cn0 && cn0 < f.p1 {
					col = f.Cols[colHigh]
				} else {
					col = f.Cols[colBack]
				}
				f.Background.Draw(rect, col, nil, rect.Min)
			}
			y = pt.Y
			cn0 -= uint64(b.Nrune)
		} else {
			rect.Min = pt
			rect.Max = pt
			rect.Max.X += b.Wid
			rect.Max.Y += f.Font.Height
			if rect.Max.X >= f.Rect.Max.X {
				rect.Max.X = f.Rect.Max.X
			}
			cn0--
			if f.p0 <= cn0 && cn0 < f.p1 {
				col = f.Cols[colHigh]
				tcol = f.Cols[colHText]
			} else {
				col = f.Cols[colBack]
				tcol = f.Cols[colText]
			}
			f.Background.Draw(rect, col, nil, rect.Min)
			y = 0
			if pt.X == f.Rect.Min.X {
				y = pt.Y
			}
		}
	}

	if f.p0 < p0 && p0 <= f.p1 {
		col = f.Cols[colHigh]
		tcol = f.Cols[colHText]
	} else {
		col = f.Cols[colBack]
		tcol = f.Cols[colText]
	}

	f.SelectPaint(ppt0, ppt1, col)
	f.DrawText(ppt0, tcol, col)
	f.addbox(uint64(nn0), uint64(frame.nbox))

	for n := 0; n < frame.nbox; n++ {
		f.box[nn0+n] = frame.box[n]
	}

	if nn0 > 0 && f.box[nn0-1].Nrune >= 0 && ppt0.X-f.box[nn0-1].Wid >= f.Rect.Min.X {
		nn0--
		ppt0.X -= f.box[nn0].Wid
	}

	n0 += frame.nbox
	if n0 < f.nbox-1 {
		n0++
	}
	f.clean(ppt0, nn0, n0)
	f.nchars += frame.nchars
	if f.p0 >= p0 {
		f.p0 += uint64(frame.nchars)
	}
	if f.p0 >= uint64(f.nchars) {
		f.p0 = uint64(f.nchars)
	}
	if f.p1 >= p0 {
		f.p1 += uint64(frame.nchars)
	}
	if f.p1 >= uint64(f.nchars) {
		f.p1 += uint64(f.nchars)
	}
	if f.p0 == f.p1 {
		f.Tick(f.Ptofchar(f.p0), true)
	}
}