// Package gtk was automatically generated by github.com/bnema/puregotk DO NOT EDIT
package gtk

import (
	"structs"
	"unsafe"

	"github.com/ebitengine/purego"

	"github.com/bnema/puregotk/pkg/core"
	"github.com/bnema/puregotk/v4/glib"
	"github.com/bnema/puregotk/v4/gobject/types"
)

// A function to be used by `GtkCustomLayout` to allocate a widget.
type CustomAllocateFunc func(uintptr, int, int, int)

// A function to be used by `GtkCustomLayout` to measure a widget.
type CustomMeasureFunc func(uintptr, Orientation, int, *int, *int, *int, *int)

// Queries a widget for its preferred size request mode.
type CustomRequestModeFunc func(uintptr) SizeRequestMode

type CustomLayoutClass struct {
	_ structs.HostLayout

	ParentClass LayoutManagerClass
}

func (x *CustomLayoutClass) GoPointer() uintptr {
	return uintptr(unsafe.Pointer(x))
}

// Uses closures for size negotiation.
//
// A `GtkCustomLayout` uses closures matching to the old `GtkWidget`
// virtual functions for size negotiation, as a convenience API to
// ease the porting towards the corresponding `GtkLayoutManager`
// virtual functions.
type CustomLayout struct {
	LayoutManager
}

var xCustomLayoutGLibType func() types.GType

func CustomLayoutGLibType() types.GType {
	return xCustomLayoutGLibType()
}

func CustomLayoutNewFromInternalPtr(ptr uintptr) *CustomLayout {
	cls := &CustomLayout{}
	cls.Ptr = ptr
	return cls
}

var xNewCustomLayout func(uintptr, uintptr, uintptr) uintptr

// Creates a new legacy layout manager.
//
// Legacy layout managers map to the old `GtkWidget` size negotiation
// virtual functions, and are meant to be used during the transition
// from layout containers to layout manager delegates.
func NewCustomLayout(RequestModeVar *CustomRequestModeFunc, MeasureVar *CustomMeasureFunc, AllocateVar *CustomAllocateFunc) *CustomLayout {
	var cls *CustomLayout

	var RequestModeVarRef uintptr
	if RequestModeVar != nil {
		RequestModeVarPtr := uintptr(unsafe.Pointer(RequestModeVar))
		if cbRefPtr, ok := glib.GetCallback(RequestModeVarPtr); ok {
			RequestModeVarRef = cbRefPtr
		} else {
			fcb := func(arg0 uintptr) SizeRequestMode {
				cbFn := *RequestModeVar
				return cbFn(arg0)
			}
			RequestModeVarRef = purego.NewCallback(fcb)
			glib.SaveCallbackWithClosure(RequestModeVarPtr, RequestModeVarRef, RequestModeVar)
		}
	}

	var MeasureVarRef uintptr
	if MeasureVar != nil {
		MeasureVarPtr := uintptr(unsafe.Pointer(MeasureVar))
		if cbRefPtr, ok := glib.GetCallback(MeasureVarPtr); ok {
			MeasureVarRef = cbRefPtr
		} else {
			fcb := func(arg0 uintptr, arg1 Orientation, arg2 int, arg3 *int, arg4 *int, arg5 *int, arg6 *int) {
				cbFn := *MeasureVar
				cbFn(arg0, arg1, arg2, arg3, arg4, arg5, arg6)
			}
			MeasureVarRef = purego.NewCallback(fcb)
			glib.SaveCallbackWithClosure(MeasureVarPtr, MeasureVarRef, MeasureVar)
		}
	}

	var AllocateVarRef uintptr
	if AllocateVar != nil {
		AllocateVarPtr := uintptr(unsafe.Pointer(AllocateVar))
		if cbRefPtr, ok := glib.GetCallback(AllocateVarPtr); ok {
			AllocateVarRef = cbRefPtr
		} else {
			fcb := func(arg0 uintptr, arg1 int, arg2 int, arg3 int) {
				cbFn := *AllocateVar
				cbFn(arg0, arg1, arg2, arg3)
			}
			AllocateVarRef = purego.NewCallback(fcb)
			glib.SaveCallbackWithClosure(AllocateVarPtr, AllocateVarRef, AllocateVar)
		}
	}

	cret := xNewCustomLayout(RequestModeVarRef, MeasureVarRef, AllocateVarRef)

	if cret == 0 {
		return nil
	}
	cls = &CustomLayout{}
	cls.Ptr = cret
	return cls
}

func (c *CustomLayout) GoPointer() uintptr {
	if c == nil {
		return 0
	}
	return c.Ptr
}

func (c *CustomLayout) SetGoPointer(ptr uintptr) {
	c.Ptr = ptr
}

func init() {
	core.SetPackageName("GTK", "gtk4")
	core.SetSharedLibraries("GTK", []string{"libgtk-4.so.1"})
	var libs []uintptr
	for _, libPath := range core.GetPaths("GTK") {
		lib, err := purego.Dlopen(libPath, purego.RTLD_NOW|purego.RTLD_GLOBAL)
		if err != nil {
			panic(err)
		}
		libs = append(libs, lib)
	}

	core.PuregoSafeRegister(&xCustomLayoutGLibType, libs, "gtk_custom_layout_get_type")

	core.PuregoSafeRegister(&xNewCustomLayout, libs, "gtk_custom_layout_new")

}