1st public release

gtk3Import/msgDlg.go

@@ -0,0 +1,175 @@
+// msgDlg.go
+
+/*
+*	©2018 H.F.M. MIT license
+*	Handle gtk3 Dialogs.
+*
+*	Message, Question/Response dialogs, file/dir dialogs, Notifications.
+ */
+
+package gtk3Import
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"regexp"
+
+	"github.com/gotk3/gotk3/gdk"
+	"github.com/gotk3/gotk3/glib"
+	"github.com/gotk3/gotk3/gtk"
+)
+
+// Notify: Display a notify message at the top right of screen.
+func Notify(title, text string) {
+	const appID = "h.f.m"
+	app, _ := gtk.ApplicationNew(appID, glib.APPLICATION_FLAGS_NONE)
+	//Shows an application as soon as the app starts
+	app.Connect("activate", func() {
+		notif := glib.NotificationNew(title)
+		notif.SetBody(text)
+		app.SendNotification(appID, notif)
+	})
+	app.Run(nil)
+	app.Quit()
+}
+
+var FileChooserAction = map[string]gtk.FileChooserAction{
+	"create-folder": gtk.FILE_CHOOSER_ACTION_CREATE_FOLDER,
+	"open":          gtk.FILE_CHOOSER_ACTION_OPEN,
+	"save":          gtk.FILE_CHOOSER_ACTION_SAVE,
+	"select-folder": gtk.FILE_CHOOSER_ACTION_SELECT_FOLDER,
+}
+
+// FileChooser: Display a file chooser dialog.
+// "open", "save", "create-folder", "select-folder" as dlgType.
+// Set title "" permit auto choice from dialog type.
+// options are 1-keepAbove and 2-enablePreviewImages
+func FileChooser(window *gtk.Window, dlgType, title, filename string, options ...bool) (outFilename string, result bool, err error) {
+	var firstBtn, scndBtn string
+	var kpAbove, preview bool // fileNotExist bool
+
+	switch len(options) {
+	case 1:
+		kpAbove = options[0]
+	case 2:
+		kpAbove = options[0]
+		preview = options[1]
+	}
+
+	firstBtn = "Cancel"
+	scndBtn = "Ok"
+
+	if len(title) == 0 {
+		switch dlgType {
+		case "create-folder":
+			title = "Create folder"
+		case "open":
+			title = "Select file to open"
+		case "save":
+			title = "Select file to save"
+		case "select-folder":
+			title = "Select directory"
+		}
+	}
+	fileChooser, err := gtk.FileChooserDialogNewWith2Buttons(title,
+		window, FileChooserAction[dlgType],
+		firstBtn, gtk.RESPONSE_CANCEL,
+		scndBtn, gtk.RESPONSE_ACCEPT)
+	if err != nil {
+		return outFilename, result, err
+	}
+
+	if preview {
+		if previewImage, err := gtk.ImageNew(); err == nil {
+			previewImage.Show()
+			var pixbuf *gdk.Pixbuf
+			fileChooser.SetPreviewWidget(previewImage)
+			fileChooser.Connect("update-preview", func(fc *gtk.FileChooserDialog) {
+				if _, err = os.Stat(fc.GetFilename()); !os.IsNotExist(err) {
+					if pixbuf, err = gdk.PixbufNewFromFile(fc.GetFilename()); err == nil {
+						fileChooser.SetPreviewWidgetActive(true)
+						if pixbuf.GetWidth() > 640 || pixbuf.GetHeight() > 480 {
+							if pixbuf, err = gdk.PixbufNewFromFileAtScale(fc.GetFilename(), 200, 200, true); err != nil {
+								fmt.Printf("Image '%s' cannot be loaded, got error: %s", fc.GetFilename(), err.Error())
+							}
+						}
+						previewImage.SetFromPixbuf(pixbuf)
+					} else {
+						fileChooser.SetPreviewWidgetActive(false)
+					}
+				}
+			})
+		}
+	}
+
+	if dlgType == "save" {
+		fileChooser.SetCurrentName(filepath.Base(filename))
+	}
+	fileChooser.SetCurrentFolder(filepath.Dir(filename))
+	fileChooser.SetDoOverwriteConfirmation(true)
+	fileChooser.SetModal(true)
+	fileChooser.SetSkipPagerHint(true)
+	fileChooser.SetSkipTaskbarHint(true)
+	fileChooser.SetKeepAbove(kpAbove)
+
+	switch int(fileChooser.Run()) {
+	case -3:
+		result = true
+		outFilename = fileChooser.GetFilename()
+	}
+
+	fileChooser.Destroy()
+	return outFilename, result, err
+}
+
+var dialogType = map[string]gtk.MessageType{
+	"info": gtk.MESSAGE_INFO, "inf": gtk.MESSAGE_INFO,
+	"warning": gtk.MESSAGE_WARNING, "wrn": gtk.MESSAGE_WARNING,
+	"question": gtk.MESSAGE_QUESTION, "qst": gtk.MESSAGE_QUESTION,
+	"error": gtk.MESSAGE_ERROR, "err": gtk.MESSAGE_ERROR,
+	"other": gtk.MESSAGE_OTHER, "oth": gtk.MESSAGE_OTHER,
+}
+
+// DlgMessage: Display message dialog whit multiples buttons, text inside accet markup format,
+// return get <0 for cross closed or >-1 correspondig to buttons order representation.
+// "info", "warning", "question", "error", "other" as dlgType.
+// iconFileName: "" = No image
+func DlgMessage(window *gtk.Window, dlgType, title, text string, iconFileName interface{}, buttons ...string) (value int) {
+	// Build dialog
+	msgDialog := gtk.MessageDialogNew(window,
+		gtk.DIALOG_MODAL,
+		dialogType[dlgType],
+		gtk.BUTTONS_NONE,
+		"")
+
+	box, err := msgDialog.GetContentArea()
+	if err == nil {
+		setBoxImage(box, iconFileName)
+	}
+
+	msgDialog.SetSkipTaskbarHint(true)
+	msgDialog.SetKeepAbove(true)
+	// Check for link to ake it clickable
+	reg := regexp.MustCompile(`(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?`)
+	if reg.MatchString(text) {
+		msgDialog.SetProperty("use-markup", true)
+	}
+	msgDialog.SetProperty("text", text)
+	msgDialog.SetTitle(title)
+	// Add button(s)
+	for idx, btn := range buttons {
+		button, err := msgDialog.AddButton(btn, gtk.ResponseType(idx))
+		if err != nil {
+			log.Fatal(btn+" button could not be created: ", err)
+		}
+		parent, _ := button.GetParent()
+		parent.SetHAlign(gtk.ALIGN_END)
+		button.SetSizeRequest(100, 1)
+		button.SetBorderWidth(2)
+	}
+	result := msgDialog.Run()
+	msgDialog.Destroy()
+	return int(result)
+}