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cchat-gtk/internal/ui/rich/labeluri/labeluri.go

355 lines
8.3 KiB
Go

package labeluri
import (
"fmt"
"html"
"net/url"
"path"
"strings"
"github.com/diamondburned/cchat-gtk/internal/gts/httputil"
"github.com/diamondburned/cchat-gtk/internal/log"
"github.com/diamondburned/cchat-gtk/internal/ui/dialog"
"github.com/diamondburned/cchat-gtk/internal/ui/primitives"
"github.com/diamondburned/cchat-gtk/internal/ui/primitives/roundimage"
"github.com/diamondburned/cchat-gtk/internal/ui/primitives/scrollinput"
"github.com/diamondburned/cchat-gtk/internal/ui/rich"
"github.com/diamondburned/cchat-gtk/internal/ui/rich/parser/markup"
"github.com/diamondburned/cchat/text"
"github.com/gotk3/gotk3/gdk"
"github.com/gotk3/gotk3/gtk"
"github.com/gotk3/gotk3/pango"
"github.com/pkg/errors"
"github.com/skratchdot/open-golang/open"
)
const (
AvatarSize = 96
PopoverWidth = 250
MaxWidth = 350
MaxHeight = 350
)
type WidgetConnector interface {
gtk.IWidget
primitives.Connector
}
var _ WidgetConnector = (*gtk.Label)(nil)
// Labeler implements a rich label that stores an output state.
type Labeler interface {
WidgetConnector
rich.Labeler
Output() markup.RenderOutput
}
// Label implements a label that's already bounded to the markup URI handlers.
type Label struct {
*rich.Label
output markup.RenderOutput
}
var (
_ Labeler = (*Label)(nil)
_ rich.SuperLabeler = (*Label)(nil)
)
func NewLabel(txt text.Rich) *Label {
l := &Label{}
l.Label = rich.NewInheritLabel(l)
l.Label.SetLabelUnsafe(txt) // test
// Bind and return.
BindRichLabel(l)
return l
}
func (l *Label) Reset() {
l.output = markup.RenderOutput{}
}
func (l *Label) SetLabelUnsafe(content text.Rich) {
l.output = markup.RenderCmplx(content)
l.SetMarkup(l.output.Markup)
}
// Output returns the label's markup output. This function is NOT
// thread-safe.
func (l *Label) Output() markup.RenderOutput {
return l.output
}
// SetOutput sets the internal output and label.
func (l *Label) SetOutput(o markup.RenderOutput) {
l.output = o
l.SetMarkup(o.Markup)
}
func BindRichLabel(label Labeler) {
bind(label, func(uri string, ptr gdk.Rectangle) bool {
var output = label.Output()
if segment := output.IsMention(uri); segment != nil {
if p := NewPopoverMentioner(label, output.Input, segment); p != nil {
p.SetPointingTo(ptr)
p.Popup()
}
return true
}
return false
})
}
func PopoverMentioner(rel gtk.IWidget, input string, mention text.Segment) {
if p := NewPopoverMentioner(rel, input, mention); p != nil {
p.Popup()
}
}
func NewPopoverMentioner(rel gtk.IWidget, input string, segment text.Segment) *gtk.Popover {
var mention = segment.AsMentioner()
if mention == nil {
return nil
}
var info = mention.MentionInfo()
if info.IsEmpty() {
return nil
}
start, end := segment.Bounds()
h := input[start:end]
box, _ := gtk.BoxNew(gtk.ORIENTATION_VERTICAL, 0)
box.Show()
// Do we have an image or an avatar?
var url string
var round bool
if avatarer := segment.AsAvatarer(); avatarer != nil {
url = avatarer.Avatar()
round = true
} else if imager := segment.AsImager(); imager != nil {
url = imager.Image()
}
if url != "" {
box.PackStart(popoverImg(url, round), false, false, 8)
}
head, _ := gtk.LabelNew(largeText(h))
head.SetUseMarkup(true)
head.SetLineWrap(true)
head.SetLineWrapMode(pango.WRAP_WORD_CHAR)
head.SetMarginStart(8)
head.SetMarginEnd(8)
head.Show()
box.PackStart(head, false, false, 0)
// Left-align the label if we don't have an image.
if url == "" {
head.SetXAlign(0)
}
l, _ := gtk.LabelNew(markup.Render(info))
l.SetUseMarkup(true)
l.SetLineWrapMode(pango.WRAP_WORD_CHAR)
l.SetLineWrap(true)
l.SetXAlign(0)
l.SetMarginStart(8)
l.SetMarginEnd(8)
l.SetMarginTop(8)
l.SetMarginBottom(8)
l.Show()
// Enable images???
BindActivator(l)
// Make a scrolling text.
scr := scrollinput.NewVScroll(PopoverWidth)
scr.Show()
scr.Add(l)
box.PackStart(scr, false, false, 0)
p, _ := gtk.PopoverNew(rel)
p.Add(box)
p.SetSizeRequest(PopoverWidth, -1)
p.Connect("destroy", box.Destroy)
return p
}
func largeText(text string) string {
return fmt.Sprintf(
`<span insert-hyphens="false" size="large">%s</span>`, html.EscapeString(text),
)
}
// popoverImg creates a new button with an image for it, which is used for the
// avatar in the user popover.
func popoverImg(url string, round bool) gtk.IWidget {
var btn *gtk.Button
var img *gtk.Image
var idl httputil.ImageContainerSizer
if round {
b, _ := roundimage.NewButton()
img = b.Image.GetImage()
idl = b.Image
btn = b.Button
} else {
img, _ = gtk.ImageNew()
btn, _ = gtk.ButtonNew()
btn.Add(img)
idl = img
}
img.SetSizeRequest(AvatarSize, AvatarSize)
img.SetHAlign(gtk.ALIGN_CENTER)
img.Show()
httputil.AsyncImageSized(idl, url, AvatarSize, AvatarSize)
btn.SetHAlign(gtk.ALIGN_CENTER)
btn.SetRelief(gtk.RELIEF_NONE)
btn.Connect("clicked", func() { PromptOpen(url) })
btn.Show()
return btn
}
func BindActivator(connector WidgetConnector) {
bind(connector, nil)
}
// bind connects activate-link. If activator returns true, then nothing is done.
// Activator can be nil.
func bind(connector WidgetConnector, activator func(uri string, r gdk.Rectangle) bool) {
// This implementation doesn't seem like a good idea. First off, is the
// closure really garbage collected? If it's not, then we have some huge
// issues. Second, if the closure is garbage collected, then when? If it's
// not garbage collecteed, then not only are we leaking 2 float64s per
// message, but we're also keeping alive the widget.
var x, y float64
connector.Connect("motion-notify-event", func(w gtk.IWidget, ev *gdk.Event) {
x, y = gdk.EventMotionNewFromEvent(ev).MotionVal()
})
connector.Connect("activate-link", func(c WidgetConnector, uri string) bool {
// Make a new rectangle to use in the popover.
r := gdk.Rectangle{}
r.SetX(int(x))
r.SetY(int(y))
if activator != nil && activator(uri, r) {
return true
}
switch ext(uri) {
case ".jpg", ".jpeg", ".png", ".webp", ".gif":
// Make a new image that's asynchronously fetched inside a button.
// Cap the width and height if requested.
var w, h, round = markup.FragmentImageSize(uri, MaxWidth, MaxHeight)
var img *gtk.Image
if !round {
img, _ = gtk.ImageNew()
} else {
r, _ := roundimage.NewImage(0)
img = r.Image
}
img.SetFromIconName("image-loading", gtk.ICON_SIZE_BUTTON)
img.Show()
// Asynchronously fetch the image.
httputil.AsyncImageSized(img, uri, w, h)
btn, _ := gtk.ButtonNew()
btn.Add(img)
btn.SetRelief(gtk.RELIEF_NONE)
btn.Connect("clicked", func() { PromptOpen(uri) })
btn.Show()
p, _ := gtk.PopoverNew(c)
p.SetPointingTo(r)
p.Connect("closed", img.Destroy) // on close, destroy image
p.Add(btn)
p.Popup()
return true
}
PromptOpen(uri)
// Never let Gtk open the dialog.
return true
})
}
const urlPrompt = `This link leads to the following URL:
<span weight="bold" insert_hyphens="false"><a href="%[1]s">%[1]s</a></span>
Click <b>Open</b> to proceed.`
var warnLabelCSS = primitives.PrepareCSS(`
label {
padding: 4px 8px;
}
`)
// PromptOpen shows a dialog asking if the URL should be opened.
func PromptOpen(uri string) {
// Format the prompt body.
l, _ := gtk.LabelNew("")
l.SetJustify(gtk.JUSTIFY_CENTER)
l.SetLineWrap(true)
l.SetLineWrapMode(pango.WRAP_WORD_CHAR)
l.Show()
l.SetMarkup(fmt.Sprintf(urlPrompt, html.EscapeString(uri)))
// Style the label.
primitives.AttachCSS(l, warnLabelCSS)
open := func(m *dialog.Modal) {
// Close the dialog.
m.Destroy()
// Open the link.
if err := open.Start(uri); err != nil {
log.Error(errors.Wrap(err, "Failed to open URL after confirm"))
}
}
// Prompt the user if they want to open the URL.
dlg := dialog.NewModal(l, "Caution", "_Open", open)
dlg.SetSizeRequest(350, 100)
// Style the button to have a color.
primitives.SuggestAction(dlg.Action)
// Add a class to the dialog to allow theming.
primitives.AddClass(dlg, "url-warning")
// On link click, close the dialog, open the link ourselves, then return.
l.Connect("activate-link", func(l *gtk.Label, uri string) bool {
open(dlg)
return true
})
// Show the dialog.
dlg.Show()
}
// ext parses and sanitizes the extension to something comparable.
func ext(uri string) string {
u, err := url.Parse(uri)
if err != nil {
return strings.ToLower(path.Ext(uri))
}
return strings.ToLower(path.Ext(u.Path))
}