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fw-daemon/vendor/github.com/gotk3/gotk3.old/cairo/canvas.go

402 lines
11 KiB

package cairo
// #cgo pkg-config: cairo cairo-gobject
// #include <stdlib.h>
// #include <cairo.h>
// #include <cairo-gobject.h>
import "C"
import (
"reflect"
"runtime"
"unsafe"
)
// Context is a representation of Cairo's cairo_t.
type Context struct {
context *C.cairo_t
}
// native returns a pointer to the underlying cairo_t.
func (v *Context) native() *C.cairo_t {
if v == nil {
return nil
}
return v.context
}
func (v *Context) GetCContext() *C.cairo_t {
return v.native()
}
// Native returns a pointer to the underlying cairo_t.
func (v *Context) Native() uintptr {
return uintptr(unsafe.Pointer(v.native()))
}
func marshalContext(p uintptr) (interface{}, error) {
c := C.g_value_get_boxed((*C.GValue)(unsafe.Pointer(p)))
context := (*C.cairo_t)(unsafe.Pointer(c))
return wrapContext(context), nil
}
func wrapContext(context *C.cairo_t) *Context {
return &Context{context}
}
// Create is a wrapper around cairo_create().
func Create(target *Surface) *Context {
c := C.cairo_create(target.native())
ctx := wrapContext(c)
runtime.SetFinalizer(ctx, (*Context).destroy)
return ctx
}
// reference is a wrapper around cairo_reference().
func (v *Context) reference() {
v.context = C.cairo_reference(v.native())
}
// destroy is a wrapper around cairo_destroy().
func (v *Context) destroy() {
C.cairo_destroy(v.native())
}
// Status is a wrapper around cairo_status().
func (v *Context) Status() Status {
c := C.cairo_status(v.native())
return Status(c)
}
// Save is a wrapper around cairo_save().
func (v *Context) Save() {
C.cairo_save(v.native())
}
// Restore is a wrapper around cairo_restore().
func (v *Context) Restore() {
C.cairo_restore(v.native())
}
// GetTarget is a wrapper around cairo_get_target().
func (v *Context) GetTarget() *Surface {
c := C.cairo_get_target(v.native())
s := wrapSurface(c)
s.reference()
runtime.SetFinalizer(s, (*Surface).destroy)
return s
}
// PushGroup is a wrapper around cairo_push_group().
func (v *Context) PushGroup() {
C.cairo_push_group(v.native())
}
// PushGroupWithContent is a wrapper around cairo_push_group_with_content().
func (v *Context) PushGroupWithContent(content Content) {
C.cairo_push_group_with_content(v.native(), C.cairo_content_t(content))
}
// TODO(jrick) PopGroup (depends on Pattern)
// PopGroupToSource is a wrapper around cairo_pop_group_to_source().
func (v *Context) PopGroupToSource() {
C.cairo_pop_group_to_source(v.native())
}
// GetGroupTarget is a wrapper around cairo_get_group_target().
func (v *Context) GetGroupTarget() *Surface {
c := C.cairo_get_group_target(v.native())
s := wrapSurface(c)
s.reference()
runtime.SetFinalizer(s, (*Surface).destroy)
return s
}
// SetSourceRGB is a wrapper around cairo_set_source_rgb().
func (v *Context) SetSourceRGB(red, green, blue float64) {
C.cairo_set_source_rgb(v.native(), C.double(red), C.double(green),
C.double(blue))
}
// SetSourceRGBA is a wrapper around cairo_set_source_rgba().
func (v *Context) SetSourceRGBA(red, green, blue, alpha float64) {
C.cairo_set_source_rgba(v.native(), C.double(red), C.double(green),
C.double(blue), C.double(alpha))
}
// TODO(jrick) SetSource (depends on Pattern)
// SetSourceSurface is a wrapper around cairo_set_source_surface().
func (v *Context) SetSourceSurface(surface *Surface, x, y float64) {
C.cairo_set_source_surface(v.native(), surface.native(), C.double(x),
C.double(y))
}
// TODO(jrick) GetSource (depends on Pattern)
// SetAntialias is a wrapper around cairo_set_antialias().
func (v *Context) SetAntialias(antialias Antialias) {
C.cairo_set_antialias(v.native(), C.cairo_antialias_t(antialias))
}
// GetAntialias is a wrapper around cairo_get_antialias().
func (v *Context) GetAntialias() Antialias {
c := C.cairo_get_antialias(v.native())
return Antialias(c)
}
// SetDash is a wrapper around cairo_set_dash().
func (v *Context) SetDash(dashes []float64, offset float64) {
header := (*reflect.SliceHeader)(unsafe.Pointer(&dashes))
cdashes := (*C.double)(unsafe.Pointer(header.Data))
C.cairo_set_dash(v.native(), cdashes, C.int(header.Len),
C.double(offset))
}
// GetDashCount is a wrapper around cairo_get_dash_count().
func (v *Context) GetDashCount() int {
c := C.cairo_get_dash_count(v.native())
return int(c)
}
// GetDash is a wrapper around cairo_get_dash().
func (v *Context) GetDash() (dashes []float64, offset float64) {
dashCount := v.GetDashCount()
cdashes := (*C.double)(C.calloc(8, C.size_t(dashCount)))
var coffset C.double
C.cairo_get_dash(v.native(), cdashes, &coffset)
header := (*reflect.SliceHeader)((unsafe.Pointer(&dashes)))
header.Data = uintptr(unsafe.Pointer(cdashes))
header.Len = dashCount
header.Cap = dashCount
return dashes, float64(coffset)
}
// SetFillRule is a wrapper around cairo_set_fill_rule().
func (v *Context) SetFillRule(fillRule FillRule) {
C.cairo_set_fill_rule(v.native(), C.cairo_fill_rule_t(fillRule))
}
// GetFillRule is a wrapper around cairo_get_fill_rule().
func (v *Context) GetFillRule() FillRule {
c := C.cairo_get_fill_rule(v.native())
return FillRule(c)
}
// SetLineCap is a wrapper around cairo_set_line_cap().
func (v *Context) SetLineCap(lineCap LineCap) {
C.cairo_set_line_cap(v.native(), C.cairo_line_cap_t(lineCap))
}
// GetLineCap is a wrapper around cairo_get_line_cap().
func (v *Context) GetLineCap() LineCap {
c := C.cairo_get_line_cap(v.native())
return LineCap(c)
}
// SetLineJoin is a wrapper around cairo_set_line_join().
func (v *Context) SetLineJoin(lineJoin LineJoin) {
C.cairo_set_line_join(v.native(), C.cairo_line_join_t(lineJoin))
}
// GetLineJoin is a wrapper around cairo_get_line_join().
func (v *Context) GetLineJoin() LineJoin {
c := C.cairo_get_line_join(v.native())
return LineJoin(c)
}
// SetLineWidth is a wrapper around cairo_set_line_width().
func (v *Context) SetLineWidth(width float64) {
C.cairo_set_line_width(v.native(), C.double(width))
}
// GetLineWidth is a wrapper cairo_get_line_width().
func (v *Context) GetLineWidth() float64 {
c := C.cairo_get_line_width(v.native())
return float64(c)
}
// SetMiterLimit is a wrapper around cairo_set_miter_limit().
func (v *Context) SetMiterLimit(limit float64) {
C.cairo_set_miter_limit(v.native(), C.double(limit))
}
// GetMiterLimit is a wrapper around cairo_get_miter_limit().
func (v *Context) GetMiterLimit() float64 {
c := C.cairo_get_miter_limit(v.native())
return float64(c)
}
// SetOperator is a wrapper around cairo_set_operator().
func (v *Context) SetOperator(op Operator) {
C.cairo_set_operator(v.native(), C.cairo_operator_t(op))
}
// GetOperator is a wrapper around cairo_get_operator().
func (v *Context) GetOperator() Operator {
c := C.cairo_get_operator(v.native())
return Operator(c)
}
// SetTolerance is a wrapper around cairo_set_tolerance().
func (v *Context) SetTolerance(tolerance float64) {
C.cairo_set_tolerance(v.native(), C.double(tolerance))
}
// GetTolerance is a wrapper around cairo_get_tolerance().
func (v *Context) GetTolerance() float64 {
c := C.cairo_get_tolerance(v.native())
return float64(c)
}
// Clip is a wrapper around cairo_clip().
func (v *Context) Clip() {
C.cairo_clip(v.native())
}
// ClipPreserve is a wrapper around cairo_clip_preserve().
func (v *Context) ClipPreserve() {
C.cairo_clip_preserve(v.native())
}
// ClipExtents is a wrapper around cairo_clip_extents().
func (v *Context) ClipExtents() (x1, y1, x2, y2 float64) {
var cx1, cy1, cx2, cy2 C.double
C.cairo_clip_extents(v.native(), &cx1, &cy1, &cx2, &cy2)
return float64(cx1), float64(cy1), float64(cx2), float64(cy2)
}
// InClip is a wrapper around cairo_in_clip().
func (v *Context) InClip(x, y float64) bool {
c := C.cairo_in_clip(v.native(), C.double(x), C.double(y))
return gobool(c)
}
// ResetClip is a wrapper around cairo_reset_clip().
func (v *Context) ResetClip() {
C.cairo_reset_clip(v.native())
}
// Rectangle is a wrapper around cairo_rectangle().
func (v *Context) Rectangle(x, y, w, h float64) {
C.cairo_rectangle(v.native(), C.double(x), C.double(y), C.double(w), C.double(h))
}
// Arc is a wrapper around cairo_arc().
func (v *Context) Arc(xc, yc, radius, angle1, angle2 float64) {
C.cairo_arc(v.native(), C.double(xc), C.double(yc), C.double(radius), C.double(angle1), C.double(angle2))
}
// ArcNegative is a wrapper around cairo_arc_negative().
func (v *Context) ArcNegative(xc, yc, radius, angle1, angle2 float64) {
C.cairo_arc_negative(v.native(), C.double(xc), C.double(yc), C.double(radius), C.double(angle1), C.double(angle2))
}
// LineTo is a wrapper around cairo_line_to().
func (v *Context) LineTo(x, y float64) {
C.cairo_line_to(v.native(), C.double(x), C.double(y))
}
// CurveTo is a wrapper around cairo_curve_to().
func (v *Context) CurveTo(x1, y1, x2, y2, x3, y3 float64) {
C.cairo_curve_to(v.native(), C.double(x1), C.double(y1), C.double(x2), C.double(y2), C.double(x3), C.double(y3))
}
// MoveTo is a wrapper around cairo_move_to().
func (v *Context) MoveTo(x, y float64) {
C.cairo_move_to(v.native(), C.double(x), C.double(y))
}
// TODO(jrick) CopyRectangleList (depends on RectangleList)
// Fill is a wrapper around cairo_fill().
func (v *Context) Fill() {
C.cairo_fill(v.native())
}
// ClosePath is a wrapper around cairo_close_path().
func (v *Context) ClosePath() {
C.cairo_close_path(v.native())
}
// NewPath is a wrapper around cairo_new_path().
func (v *Context) NewPath() {
C.cairo_new_path(v.native())
}
// GetCurrentPoint is a wrapper around cairo_get_current_point().
func (v *Context) GetCurrentPoint() (x, y float64) {
C.cairo_get_current_point(v.native(), (*C.double)(&x), (*C.double)(&y))
return
}
// FillPreserve is a wrapper around cairo_fill_preserve().
func (v *Context) FillPreserve() {
C.cairo_fill_preserve(v.native())
}
// FillExtents is a wrapper around cairo_fill_extents().
func (v *Context) FillExtents() (x1, y1, x2, y2 float64) {
var cx1, cy1, cx2, cy2 C.double
C.cairo_fill_extents(v.native(), &cx1, &cy1, &cx2, &cy2)
return float64(cx1), float64(cy1), float64(cx2), float64(cy2)
}
// InFill is a wrapper around cairo_in_fill().
func (v *Context) InFill(x, y float64) bool {
c := C.cairo_in_fill(v.native(), C.double(x), C.double(y))
return gobool(c)
}
// TODO(jrick) Mask (depends on Pattern)
// MaskSurface is a wrapper around cairo_mask_surface().
func (v *Context) MaskSurface(surface *Surface, surfaceX, surfaceY float64) {
C.cairo_mask_surface(v.native(), surface.native(), C.double(surfaceX),
C.double(surfaceY))
}
// Paint is a wrapper around cairo_paint().
func (v *Context) Paint() {
C.cairo_paint(v.native())
}
// PaintWithAlpha is a wrapper around cairo_paint_with_alpha().
func (v *Context) PaintWithAlpha(alpha float64) {
C.cairo_paint_with_alpha(v.native(), C.double(alpha))
}
// Stroke is a wrapper around cairo_stroke().
func (v *Context) Stroke() {
C.cairo_stroke(v.native())
}
// StrokePreserve is a wrapper around cairo_stroke_preserve().
func (v *Context) StrokePreserve() {
C.cairo_stroke_preserve(v.native())
}
// StrokeExtents is a wrapper around cairo_stroke_extents().
func (v *Context) StrokeExtents() (x1, y1, x2, y2 float64) {
var cx1, cy1, cx2, cy2 C.double
C.cairo_stroke_extents(v.native(), &cx1, &cy1, &cx2, &cy2)
return float64(cx1), float64(cy1), float64(cx2), float64(cy2)
}
// InStroke is a wrapper around cairo_in_stroke().
func (v *Context) InStroke(x, y float64) bool {
c := C.cairo_in_stroke(v.native(), C.double(x), C.double(y))
return gobool(c)
}
// CopyPage is a wrapper around cairo_copy_page().
func (v *Context) CopyPage() {
C.cairo_copy_page(v.native())
}
// ShowPage is a wrapper around cairo_show_page().
func (v *Context) ShowPage() {
C.cairo_show_page(v.native())
}