diff options
Diffstat (limited to 'BBB_GOFILES')
| -rw-r--r-- | BBB_GOFILES/draw.go | 484 | ||||
| -rw-r--r-- | BBB_GOFILES/image.go | 58 |
2 files changed, 0 insertions, 542 deletions
diff --git a/BBB_GOFILES/draw.go b/BBB_GOFILES/draw.go deleted file mode 100644 index fd21a75..0000000 --- a/BBB_GOFILES/draw.go +++ /dev/null @@ -1,484 +0,0 @@ -// 13 december 2015 - -package ui - -// #include <stdlib.h> -// #include "ui.h" -// #include "util.h" -// static uiDrawBrush *newBrush(void) -// { -// return (uiDrawBrush *) pkguiAlloc(sizeof (uiDrawBrush)); -// } -// static uiDrawBrushGradientStop *newStops(size_t n) -// { -// return (uiDrawBrushGradientStop *) pkguiAlloc(n * sizeof (uiDrawBrushGradientStop)); -// } -// static void setStop(uiDrawBrushGradientStop *stops, size_t i, double pos, double r, double g, double b, double a) -// { -// stops[i].Pos = pos; -// stops[i].R = r; -// stops[i].G = g; -// stops[i].B = b; -// stops[i].A = a; -// } -// static void freeBrush(uiDrawBrush *b) -// { -// if (b->Type == uiDrawBrushTypeLinearGradient || b->Type == uiDrawBrushTypeRadialGradient) -// free(b->Stops); -// free(b); -// } -// static uiDrawStrokeParams *newStrokeParams(void) -// { -// return (uiDrawStrokeParams *) pkguiAlloc(sizeof (uiDrawStrokeParams)); -// } -// static double *newDashes(size_t n) -// { -// return (double *) pkguiAlloc(n * sizeof (double)); -// } -// static void setDash(double *dashes, size_t i, double dash) -// { -// dashes[i] = dash; -// } -// static void freeStrokeParams(uiDrawStrokeParams *sp) -// { -// if (sp->Dashes != NULL) -// free(sp->Dashes); -// free(sp); -// } -// static uiDrawMatrix *newMatrix(void) -// { -// return (uiDrawMatrix *) pkguiAlloc(sizeof (uiDrawMatrix)); -// } -// static void freeMatrix(uiDrawMatrix *m) -// { -// free(m); -// } -import "C" - -// Path represents a geometric path in a drawing context. -// This is the basic unit of drawing: all drawing operations consist of -// forming a path, then stroking, filling, or clipping to that path. -// A path is an OS resource; you must explicitly free it when finished. -// Paths consist of multiple figures. Once you have added all the -// figures to a path, you must "end" the path to make it ready to draw -// with. -// TODO rewrite all that -// -// Or more visually, the lifecycle of a Path is -// p := NewPath() -// for every figure { -// p.NewFigure(...) // or NewFigureWithArc -// p.LineTo(...) // any number of these in any order -// p.ArcTo(...) -// p.BezierTo(...) -// if figure should be closed { -// p.CloseFigure() -// } -// } -// p.End() -// // ... -// dp.Context.Stroke(p, ...) // any number of these in any order -// dp.Context.Fill(p, ...) -// dp.Context.Clip(p) -// // ... -// p.Free() // when done with the path -// -// A Path also defines its fill mode. (This should ideally be a fill -// parameter, but some implementations prevent it.) -// TODO talk about fill modes -type Path struct { - p *C.uiDrawPath -} - -// TODO -// -// TODO disclaimer -type FillMode uint -const ( - Winding FillMode = iota - Alternate -) - -// NewPath creates a new Path with the given fill mode. -func NewPath(fillMode FillMode) *Path { - var fm C.uiDrawFillMode - - switch fillMode { - case Winding: - fm = C.uiDrawFillModeWinding - case Alternate: - fm = C.uiDrawFillModeAlternate - default: - panic("invalid fill mode passed to ui.NewPath()") - } - return &Path{ - p: C.uiDrawNewPath(fm), - } -} - -// Free destroys a Path. After calling Free the Path cannot be used. -func (p *Path) Free() { - C.uiDrawFreePath(p.p) -} - -// NewFigure starts a new figure in the Path. The current point -// is set to the given point. -func (p *Path) NewFigure(x float64, y float64) { - C.uiDrawPathNewFigure(p.p, C.double(x), C.double(y)) -} - -// NewFigureWithArc starts a new figure in the Path and adds an arc -// as the first element of the figure. Unlike ArcTo, NewFigureWithArc -// does not draw an initial line segment. Otherwise, see ArcTo. -func (p *Path) NewFigureWithArc(xCenter float64, yCenter float64, radius float64, startAngle float64, sweep float64, isNegative bool) { - C.uiDrawPathNewFigureWithArc(p.p, - C.double(xCenter), C.double(yCenter), - C.double(radius), - C.double(startAngle), C.double(sweep), - frombool(isNegative)) -} - -// LineTo adds a line to the current figure of the Path starting from -// the current point and ending at the given point. The current point -// is set to the ending point. -func (p *Path) LineTo(x float64, y float64) { - C.uiDrawPathLineTo(p.p, C.double(x), C.double(y)) -} - -// ArcTo adds a circular arc to the current figure of the Path. -// You pass it the center of the arc, its radius in radians, the starting -// angle (couterclockwise) in radians, and the number of radians the -// arc should sweep (counterclockwise). A line segment is drawn from -// the current point to the start of the arc. The current point is set to -// the end of the arc. -func (p *Path) ArcTo(xCenter float64, yCenter float64, radius float64, startAngle float64, sweep float64, isNegative bool) { - C.uiDrawPathArcTo(p.p, - C.double(xCenter), C.double(yCenter), - C.double(radius), - C.double(startAngle), C.double(sweep), - frombool(isNegative)) -} - -// BezierTo adds a cubic Bezier curve to the current figure of the Path. -// Its start point is the current point. c1x and c1y are the first control -// point. c2x and c2y are the second control point. endX and endY -// are the end point. The current point is set to the end point. -func (p *Path) BezierTo(c1x float64, c1y float64, c2x float64, c2y float64, endX float64, endY float64) { - C.uiDrawPathBezierTo(p.p, - C.double(c1x), C.double(c1y), - C.double(c2x), C.double(c2y), - C.double(endX), C.double(endY)) -} - -// CloseFigure draws a line segment from the current point of the -// current figure of the Path back to its initial point. After calling this, -// the current figure is over and you must either start a new figure -// or end the Path. If this is not called and you start a new figure or -// end the Path, then the current figure will not have this closing line -// segment added to it (but the figure will still be over). -func (p *Path) CloseFigure() { - C.uiDrawPathCloseFigure(p.p) -} - -// AddRectangle creates a new figure in the Path that consists entirely -// of a rectangle whose top-left corner is at the given point and whose -// size is the given size. The rectangle is a closed figure; you must -// either start a new figure or end the Path after calling this method. -func (p *Path) AddRectangle(x float64, y float64, width float64, height float64) { - C.uiDrawPathAddRectangle(p.p, C.double(x), C.double(y), C.double(width), C.double(height)) -} - -// End ends the current Path. You cannot add figures to a Path that has -// been ended. You cannot draw with a Path that has not been ended. -func (p *Path) End() { - C.uiDrawPathEnd(p.p) -} - -// DrawContext represents a drawing surface that you can draw to. -// At present the only DrawContexts are surfaces associated with -// Areas and are provided by package ui; see AreaDrawParams. -type DrawContext struct { - c *C.uiDrawContext -} - -// BrushType defines the various types of brushes. -// -// TODO disclaimer -type BrushType int -const ( - BrushTypeSolid BrushType = iota - BrushTypeLinearGradient - BrushTypeRadialGradient - BrushTypeImage // presently unimplemented -) - -// TODO -// -// TODO disclaimer -// TODO rename these to put LineCap at the beginning? or just Cap? -type LineCap int -const ( - FlatCap LineCap = iota - RoundCap - SquareCap -) - -// TODO -// -// TODO disclaimer -type LineJoin int -const ( - MiterJoin LineJoin = iota - RoundJoin - BevelJoin -) - -// TODO document -const DefaultMiterLimit = 10.0 - -// TODO -type Brush struct { - Type BrushType - - // If Type is Solid. - // TODO - R float64 - G float64 - B float64 - A float64 - - // If Type is LinearGradient or RadialGradient. - // TODO - X0 float64 // start point for both - Y0 float64 - X1 float64 // linear: end point; radial: circle center - Y1 float64 - OuterRadius float64 // for radial gradients only - Stops []GradientStop -} - -// TODO -type GradientStop struct { - Pos float64 // between 0 and 1 inclusive - R float64 - G float64 - B float64 - A float64 -} - -func (b *Brush) toC() *C.uiDrawBrush { - cb := C.newBrush() - cb.Type = C.uiDrawBrushType(b.Type) - switch b.Type { - case BrushTypeSolid: - cb.R = C.double(b.R) - cb.G = C.double(b.G) - cb.B = C.double(b.B) - cb.A = C.double(b.A) - case BrushTypeLinearGradient, BrushTypeRadialGradient: - cb.X0 = C.double(b.X0) - cb.Y0 = C.double(b.Y0) - cb.X1 = C.double(b.X1) - cb.Y1 = C.double(b.Y1) - cb.OuterRadius = C.double(b.OuterRadius) - cb.NumStops = C.size_t(len(b.Stops)) - cb.Stops = C.newStops(cb.NumStops) - for i, s := range b.Stops { - C.setStop(cb.Stops, C.size_t(i), - C.double(s.Pos), - C.double(s.R), - C.double(s.G), - C.double(s.B), - C.double(s.A)) - } - case BrushTypeImage: - panic("unimplemented") - default: - panic("invalid brush type in Brush.toC()") - } - return cb -} - -// TODO -type StrokeParams struct { - Cap LineCap - Join LineJoin - Thickness float64 - MiterLimit float64 - Dashes []float64 - DashPhase float64 -} - -func (sp *StrokeParams) toC() *C.uiDrawStrokeParams { - csp := C.newStrokeParams() - csp.Cap = C.uiDrawLineCap(sp.Cap) - csp.Join = C.uiDrawLineJoin(sp.Join) - csp.Thickness = C.double(sp.Thickness) - csp.MiterLimit = C.double(sp.MiterLimit) - csp.Dashes = nil - csp.NumDashes = C.size_t(len(sp.Dashes)) - if csp.NumDashes != 0 { - csp.Dashes = C.newDashes(csp.NumDashes) - for i, d := range sp.Dashes { - C.setDash(csp.Dashes, C.size_t(i), C.double(d)) - } - } - csp.DashPhase = C.double(sp.DashPhase) - return csp -} - -// TODO -func (c *DrawContext) Stroke(p *Path, b *Brush, sp *StrokeParams) { - cb := b.toC() - csp := sp.toC() - C.uiDrawStroke(c.c, p.p, cb, csp) - C.freeBrush(cb) - C.freeStrokeParams(csp) -} - -// TODO -func (c *DrawContext) Fill(p *Path, b *Brush) { - cb := b.toC() - C.uiDrawFill(c.c, p.p, cb) - C.freeBrush(cb) -} - -// TODO -// TODO should the methods of these return self for chaining? -type Matrix struct { - M11 float64 - M12 float64 - M21 float64 - M22 float64 - M31 float64 - M32 float64 -} - -// TODO identity matrix -func NewMatrix() *Matrix { - m := new(Matrix) - m.SetIdentity() - return m -} - -// TODO -func (m *Matrix) SetIdentity() { - m.M11 = 1 - m.M12 = 0 - m.M21 = 0 - m.M22 = 1 - m.M31 = 0 - m.M32 = 0 -} - -func (m *Matrix) toC() *C.uiDrawMatrix { - cm := C.newMatrix() - cm.M11 = C.double(m.M11) - cm.M12 = C.double(m.M12) - cm.M21 = C.double(m.M21) - cm.M22 = C.double(m.M22) - cm.M31 = C.double(m.M31) - cm.M32 = C.double(m.M32) - return cm -} - -func (m *Matrix) fromC(cm *C.uiDrawMatrix) { - m.M11 = float64(cm.M11) - m.M12 = float64(cm.M12) - m.M21 = float64(cm.M21) - m.M22 = float64(cm.M22) - m.M31 = float64(cm.M31) - m.M32 = float64(cm.M32) - C.freeMatrix(cm) -} - -// TODO -func (m *Matrix) Translate(x float64, y float64) { - cm := m.toC() - C.uiDrawMatrixTranslate(cm, C.double(x), C.double(y)) - m.fromC(cm) -} - -// TODO -func (m *Matrix) Scale(xCenter float64, yCenter float64, x float64, y float64) { - cm := m.toC() - C.uiDrawMatrixScale(cm, - C.double(xCenter), C.double(yCenter), - C.double(x), C.double(y)) - m.fromC(cm) -} - -// TODO -func (m *Matrix) Rotate(x float64, y float64, amount float64) { - cm := m.toC() - C.uiDrawMatrixRotate(cm, C.double(x), C.double(y), C.double(amount)) - m.fromC(cm) -} - -// TODO -func (m *Matrix) Skew(x float64, y float64, xamount float64, yamount float64) { - cm := m.toC() - C.uiDrawMatrixSkew(cm, - C.double(x), C.double(y), - C.double(xamount), C.double(yamount)) - m.fromC(cm) -} - -// TODO -func (m *Matrix) Multiply(m2 *Matrix) { - cm := m.toC() - cm2 := m2.toC() - C.uiDrawMatrixMultiply(cm, cm2) - C.freeMatrix(cm2) - m.fromC(cm) -} - -// TODO -func (m *Matrix) Invertible() bool { - cm := m.toC() - res := C.uiDrawMatrixInvertible(cm) - C.freeMatrix(cm) - return tobool(res) -} - -// TODO -// -// If m is not invertible, false is returned and m is left unchanged. -func (m *Matrix) Invert() bool { - cm := m.toC() - res := C.uiDrawMatrixInvert(cm) - m.fromC(cm) - return tobool(res) -} - -// TODO unimplemented -func (m *Matrix) TransformPoint(x float64, y float64) (xout float64, yout float64) { - panic("TODO") -} - -// TODO unimplemented -func (m *Matrix) TransformSize(x float64, y float64) (xout float64, yout float64) { - panic("TODO") -} - -// TODO -func (c *DrawContext) Transform(m *Matrix) { - cm := m.toC() - C.uiDrawTransform(c.c, cm) - C.freeMatrix(cm) -} - -// TODO -func (c *DrawContext) Clip(p *Path) { - C.uiDrawClip(c.c, p.p) -} - -// TODO -func (c *DrawContext) Save() { - C.uiDrawSave(c.c) -} - -// TODO -func (c *DrawContext) Restore() { - C.uiDrawRestore(c.c) -} diff --git a/BBB_GOFILES/image.go b/BBB_GOFILES/image.go deleted file mode 100644 index 9b791fe..0000000 --- a/BBB_GOFILES/image.go +++ /dev/null @@ -1,58 +0,0 @@ -// 21 august 2018 - -package ui - -import ( - "image" -) - -// #include <stdlib.h> -// #include "ui.h" -import "C" - -// Image stores an image for display on screen. -// -// Images are built from one or more representations, each with the -// same aspect ratio but a different pixel size. Package ui -// automatically selects the most appropriate representation for -// drawing the image when it comes time to draw the image; what -// this means depends on the pixel density of the target context. -// Therefore, one can use Image to draw higher-detailed images on -// higher-density displays. The typical use cases are either: -// -// - have just a single representation, at which point all screens -// use the same image, and thus uiImage acts like a simple -// bitmap image, or -// - have two images, one at normal resolution and one at 2x -// resolution; this matches the current expectations of some -// desktop systems at the time of writing (mid-2018) -// -// Image allocates OS resources; you must explicitly free an Image -// when you are finished with it. -type Image struct { - i *C.uiImage -} - -// NewImage creates a new Image with the given width and -// height. This width and height should be the size in points of the -// image in the device-independent case; typically this is the 1x size. -func NewImage(width, height float64) *Image { - return &Image{ - i: C.uiNewImage(C.double(width), C.double(height)), - } -} - -// Free frees the Image. -func (i *Image) Free() { - C.uiFreeImage(i.i) -} - -// Append adds the given image as a representation of the Image. -func (i *Image) Append(img *image.NRGBA) { - cpix := C.CBytes(img.Pix) - defer C.free(cpix) - C.uiImageAppend(i.i, cpix, - C.int(img.Rect.Dx()), - C.int(img.Rect.Dy()), - C.int(img.Stride)) -} |