1 files changed, 150 insertions, 0 deletions
diff --git a/qtruby/rubylib/examples/textedit/textedit.rb b/qtruby/rubylib/examples/textedit/textedit.rb
new file mode 100644
index 00000000..db905b4f
--- /dev/null
+++ b/qtruby/rubylib/examples/textedit/textedit.rb
@@ -0,0 +1,150 @@
+#!/usr/bin/ruby -w
+
+require 'Qt'
+require 'rexml/document'
+
+require '../base/rui.rb'
+
+class MyTextEditor < Qt::TextEdit
+   signals 'saved()'
+   slots 'insert_icon()', 'new()', 'open()', 'save_as()'
+   def initialize(w = nil)
+      @images = {}
+      @@next_image_id = 0
+      super(w)
+      self.setTextFormat(Qt::RichText)
+   end
+   def insert_richtext(richtext)
+      # todo, use a rand string
+      unique_string = '000___xxx123456789xxx___xxx123456789xxx___000'
+      insert(unique_string)
+      txt = self.text().gsub(unique_string, richtext)
+      self.setText(txt)
+   end
+   def next_image_id
+      @@next_image_id += 1
+   end
+   def load_image(fname, image_id)
+      pixmap = Qt::Pixmap.new(fname)
+      msfactory = Qt::MimeSourceFactory.defaultFactory
+      msfactory.setPixmap(image_id, pixmap)
+      @images[image_id] = fname
+      image_id
+   end
+   def insert_icon
+      fname = Qt::FileDialog.getOpenFileName
+      return if fname.nil?
+      image_id = "image_#{next_image_id}"
+      load_image(fname, image_id)
+      insert_richtext('<qt><img source="'+image_id+'"></qt>')
+   end
+   def createPopupMenu(pos) # virtual
+      pm = Qt::PopupMenu.new
+      pm.insertItem("Insert Image!", self, SLOT('insert_icon()'))
+      pm
+   end
+   def has_metadata
+      !@images.empty?
+   end
+   def metadata_fname(fname)
+      "#{fname}.metadata.xml"
+   end
+   def attempt_metadata_load(fname)
+      return unless File.exists?(metadata_fname(fname))
+      file = File.open(metadata_fname(fname))
+      @xmldoc = REXML::Document.new file
+      @xmldoc.root.elements.each("image") {
+         |image|
+         image_id = image.attributes["ident"]
+         img_fname = image.attributes["filename"]
+         load_image(img_fname, image_id)
+      }
+   end
+   def metadata_save_if_has(fname)
+      return if not has_metadata
+      metadata_doc = REXML::Document.new '<metadata/>'
+      @images.each {
+         |id, img_fname|
+         metadata_doc.root.add_element("image", {"filename"=>img_fname, "ident"=>id})
+      }
+      file = File.new(metadata_fname(fname), "w")
+      file.puts(metadata_doc)
+      file.close
+   end
+   def metadata_clear
+      @images = {}
+   end
+   def new(txt = "")
+      metadata_clear
+      self.setText(txt)
+   end
+   def open
+      fname = Qt::FileDialog.getOpenFileName
+      return if fname.nil?
+      unless File.exists?(fname)
+         Qt::MessageBox.critical(self, "File Does Not Exist", "Sorry, unable to find the requested file!")
+         return
+      end
+      return if fname.nil?
+      txt = File.open(fname).gets(nil)
+      metadata_clear
+      attempt_metadata_load(fname)
+      self.setText(txt)
+   end
+   def save_as
+      fname = Qt::FileDialog.getSaveFileName
+      return if fname.nil?
+      if File.exists?(fname)
+         Qt::MessageBox.critical(self, "File Already Exists", "Sorry, file already exists. Please choose a non-existing filename!")
+         return save_as
+      end
+      file = File.new(fname, "w")
+      file.puts(text())
+      file.close
+      metadata_save_if_has(fname)
+      emit saved()
+   end
+end
+
+class MyWidget < Qt::MainWindow
+   slots 'text_changed()', 'saved()'
+   def initialize()
+      super
+      @editor = MyTextEditor.new(self)
+      connect(@editor, SIGNAL('textChanged()'), self, SLOT('text_changed()'))
+      connect(@editor, SIGNAL('saved()'), self, SLOT('saved()'))
+
+      fileTools = Qt::ToolBar.new(self, "file operations")
+      fileMenu = Qt::PopupMenu.new(self)
+
+      actions = [
+         RAction.new("&New",  Icons::FILE_NEW, @editor, SLOT('new()'), [fileTools, fileMenu]),
+         RAction.new("&Open...", Icons::FILE_OPEN, @editor, SLOT('open()'), [fileTools, fileMenu]),
+         @save = RAction.new("Save &As...", Icons::FILE_SAVE_AS, @editor, SLOT('save_as()'), [fileTools, fileMenu]),
+         RSeperator.new([fileMenu]),
+         RAction.new("E&xit", Icons::EXIT, $qApp, SLOT('quit()'), [fileMenu])
+      ]
+
+      build_actions(actions)
+
+      menubar = Qt::MenuBar.new(self)
+      menubar.insertItem("&File", fileMenu)
+
+      self.setCentralWidget(@editor)
+   end
+   def saved
+      @save.action.setEnabled(false)
+   end
+   def text_changed
+      @save.action.setEnabled(true)
+   end
+end
+
+a = Qt::Application.new(ARGV)
+
+w = MyWidget.new
+w.show
+
+a.setMainWidget(w)
+a.exec()
+exit