mirror of
https://github.com/diamondburned/cchat-gtk.git
synced 2024-12-23 20:56:42 +00:00
153 lines
3.9 KiB
Go
153 lines
3.9 KiB
Go
package drag
|
|
|
|
import (
|
|
"net/url"
|
|
"strings"
|
|
|
|
"github.com/diamondburned/cchat-gtk/internal/log"
|
|
"github.com/diamondburned/cchat-gtk/internal/ui/primitives"
|
|
"github.com/gotk3/gotk3/gdk"
|
|
"github.com/gotk3/gotk3/gtk"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
func NewTargetEntry(target string, f gtk.TargetFlags, info uint) gtk.TargetEntry {
|
|
e, _ := gtk.TargetEntryNew(target, f, info)
|
|
return *e
|
|
}
|
|
|
|
// Find searches the given container for the draggable widget with the given
|
|
// name.
|
|
func Find(w primitives.Container, id string) int {
|
|
var index = -1 // not found default
|
|
|
|
primitives.EachChildren(w, func(i int, v interface{}) bool {
|
|
if primitives.GetName(v.(primitives.Namer)) == id {
|
|
index = i
|
|
return true
|
|
}
|
|
|
|
return false
|
|
})
|
|
|
|
return index
|
|
}
|
|
|
|
type MainDraggable interface {
|
|
ID() string
|
|
SetName(string)
|
|
SetSensitive(bool)
|
|
|
|
gtk.IWidget
|
|
Draggable
|
|
}
|
|
|
|
type Draggable interface {
|
|
DragSourceSet(gdk.ModifierType, []gtk.TargetEntry, gdk.DragAction)
|
|
DragDestSet(gtk.DestDefaults, []gtk.TargetEntry, gdk.DragAction)
|
|
|
|
primitives.Connector
|
|
}
|
|
|
|
func BindFileDest(dg Draggable, file func(path []string)) {
|
|
var dragEntries = []gtk.TargetEntry{
|
|
NewTargetEntry("text/uri-list", gtk.TARGET_OTHER_APP, 1),
|
|
}
|
|
|
|
dg.DragDestSet(gtk.DEST_DEFAULT_ALL, dragEntries, gdk.ACTION_COPY)
|
|
dg.Connect("drag-data-received",
|
|
func(_ gtk.IWidget, ctx *gdk.DragContext, x, y uint, data *gtk.SelectionData) {
|
|
// Get the files in form of line-delimited URIs
|
|
var uris = strings.Fields(string(data.GetData()))
|
|
|
|
// Create a path slice that we decode URIs into.
|
|
var paths = uris[:0]
|
|
|
|
// Decode the URIs.
|
|
for _, uri := range uris {
|
|
u, err := url.Parse(uri)
|
|
if err != nil {
|
|
log.Error(errors.Wrapf(err, "Failed parsing URI %q", uri))
|
|
continue
|
|
}
|
|
paths = append(paths, u.Path)
|
|
}
|
|
|
|
file(paths)
|
|
},
|
|
)
|
|
}
|
|
|
|
// Swapper is the type for a swap function.
|
|
type Swapper = func(targetID, movingID string)
|
|
|
|
// BindDraggable binds the draggable widget and make it drag-and-droppable. The
|
|
// parent MUST have its own state of children and MUST NOT rely on its container
|
|
// states.
|
|
//
|
|
// This function can take additional draggers, which will override the main
|
|
// draggable and will be the only widgets that can be dragged away. The source
|
|
// ID will be taken from the main draggable.
|
|
func BindDraggable(dg MainDraggable, icon string, fn Swapper, draggers ...Draggable) {
|
|
var atom = "data_" + icon
|
|
var dragAtom = gdk.GdkAtomIntern(atom, false)
|
|
var dragEntries = []gtk.TargetEntry{
|
|
NewTargetEntry(atom, gtk.TARGET_SAME_APP, 0),
|
|
}
|
|
|
|
// Set the ID for Find().
|
|
dg.SetName(dg.ID())
|
|
|
|
// Make closures function so we can use twice.
|
|
srcSet := func(dragger Draggable) {
|
|
// Drag source so you can drag the button away.
|
|
dragger.DragSourceSet(gdk.BUTTON1_MASK, dragEntries, gdk.ACTION_MOVE)
|
|
|
|
dragger.Connect("drag-data-get",
|
|
func(_ gtk.IWidget, ctx *gdk.DragContext, data *gtk.SelectionData) {
|
|
// Set the index-in-bytes.
|
|
data.SetData(dragAtom, []byte(dg.ID()))
|
|
},
|
|
)
|
|
|
|
dragger.Connect("drag-begin",
|
|
func(_ gtk.IWidget, ctx *gdk.DragContext) {
|
|
gtk.DragSetIconName(ctx, icon, 0, 0)
|
|
dg.SetSensitive(false)
|
|
},
|
|
)
|
|
|
|
dragger.Connect("drag-end",
|
|
func() {
|
|
dg.SetSensitive(true)
|
|
},
|
|
)
|
|
}
|
|
dstSet := func(dragger Draggable) {
|
|
// Drag destination so you can drag the button here.
|
|
dragger.DragDestSet(gtk.DEST_DEFAULT_ALL, dragEntries, gdk.ACTION_MOVE)
|
|
|
|
dragger.Connect("drag-data-received",
|
|
func(_ gtk.IWidget, ctx *gdk.DragContext, x, y uint, data *gtk.SelectionData) {
|
|
// Receive the incoming row's ID and call MoveSession.
|
|
fn(dg.ID(), string(data.GetData()))
|
|
},
|
|
)
|
|
}
|
|
|
|
// If we have no extra draggers given, then the MainDraggable should also be
|
|
// a source.
|
|
if len(draggers) == 0 {
|
|
srcSet(dg)
|
|
} else {
|
|
// Else, set drag sources only on those extra draggables.
|
|
for _, dragger := range draggers {
|
|
srcSet(dragger)
|
|
dstSet(dragger)
|
|
}
|
|
}
|
|
|
|
// Make MainDraggable a drag destination as well.
|
|
dstSet(dg)
|
|
}
|