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#!/usr/bin/ruby -w
require 'Qt'
require 'rexml/document'
require '../base/rui.rb'
class MyTextEditor < TQt::TextEdit
signals 'saved()'
slots 'insert_icon()', 'new()', 'open()', 'save_as()'
def initialize(w = nil)
@images = {}
@@next_image_id = 0
super(w)
self.setTextFormat(TQt::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 = TQt::Pixmap.new(fname)
msfactory = TQt::MimeSourceFactory.defaultFactory
msfactory.setPixmap(image_id, pixmap)
@images[image_id] = fname
image_id
end
def insert_icon
fname = TQt::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 = TQt::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 = TQt::FileDialog.getOpenFileName
return if fname.nil?
unless File.exists?(fname)
TQt::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 = TQt::FileDialog.getSaveFileName
return if fname.nil?
if File.exists?(fname)
TQt::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 < TQt::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 = TQt::ToolBar.new(self, "file operations")
fileMenu = TQt::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 = TQt::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 = TQt::Application.new(ARGV)
w = MyWidget.new
w.show
a.setMainWidget(w)
a.exec()
exit
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