Class: Qt::PlainTextEdit

Inherits:
Object show all
Defined in:
lib/cosmos/gui/qt.rb

Direct Known Subclasses

Cosmos::CompletionTextEdit

Instance Method Summary collapse

Instance Method Details

#add_formatted_text(text, color = nil) ⇒ Object 



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# File 'lib/cosmos/gui/qt.rb', line 431

def add_formatted_text(text, color = nil)
  if text =~ /[\x00-\x08\x0B-\x0C\x0E-\x1F\x7F-\xFF]/
    text.chomp!
    text = text.inspect.remove_quotes
    text << "\n"
  end
  if text =~ /<G>/ or color == Cosmos::GREEN
    text.gsub!('<G>', '')
    addText(text, Cosmos::GREEN)
  elsif text =~ /<Y>/ or color == Cosmos::YELLOW
    text.gsub!('<Y>', '')
    addText(text, Cosmos::YELLOW)
  elsif text =~ /<R>/ or color == Cosmos::RED
    text.gsub!('<R>', '')
    addText(text, Cosmos::RED)
  elsif text =~ /<B>/ or color == Cosmos::BLUE
    text.gsub!('<B>', '')
    addText(text, Cosmos::BLUE)
  else
    addText(text) # default is Cosmos::BLACK
  end
end

#addText(text, color = Cosmos::BLACK) ⇒ Object 



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# File 'lib/cosmos/gui/qt.rb', line 454

def addText(text, color = Cosmos::BLACK)
  @current_text = "" if !defined? @current_text or @current_text.nil?
  text = text.gsub("&", "&amp;")
  text.gsub!("\n", '')
  text.gsub!(' ', '&nbsp;')
  text.gsub!(">", "&gt;")
  text.gsub!("<", "&lt;")
  rgb_color = "#%02X%02X%02X" % [color.red, color.green, color.blue]
  @current_text +="<font color=\"#{rgb_color}\">#{text}</font><br/>"
end

#appendText(text, color = Cosmos::BLACK) ⇒ Object 



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# File 'lib/cosmos/gui/qt.rb', line 470

def appendText(text, color = Cosmos::BLACK)
  text = text.chomp
  text.gsub!(/\n/, '<br/>') # replace newlines with html breaks
  text.gsub!("&", "&amp;")
  text.gsub!(' ', '&nbsp;')
  text.gsub!(">", "&gt;")
  text.gsub!("<", "&lt;")
  rgb_color = "#%02X%02X%02X" % [color.red, color.green, color.blue]
  appendHtml("<font color=\"#{rgb_color}\">#{text}</font>")
end

#flush ⇒ Object 



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# File 'lib/cosmos/gui/qt.rb', line 465

def flush
  appendHtml(@current_text)
  @current_text = nil
end

#selected_lines ⇒ Object

Return the selected lines. If a partial line is selected the entire line will be returned. If there is no selection the line with the cursor will be returned



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# File 'lib/cosmos/gui/qt.rb', line 483

def selected_lines
  cursor = textCursor
  selection_end = cursor.selectionEnd
  # Initially place the cursor at the beginning of the selection
  # If nothing is selected this will just put the cursor at the beginning of the current line
  cursor.setPosition(textCursor.selectionStart)
  cursor.movePosition(Qt::TextCursor::StartOfLine)
  # Move the cursor to the end of the selection while keeping the anchor
  cursor.setPosition(selection_end, Qt::TextCursor::KeepAnchor)
  # Normally we want to select the entire line where the end of selection is
  # However if the user selects an exact number of lines
  # the cursor will be at the beginning of the following line
  # Therefore if the cursor is at the beginning of the line and we have a selection
  # we'll skip moving to the end of the line
  unless (cursor.atBlockStart and textCursor.hasSelection)
    cursor.movePosition(Qt::TextCursor::EndOfLine, Qt::TextCursor::KeepAnchor)
  end
  # If there is no selection then just return nil
  return nil if cursor.selectedText.nil?

  cursor.selection.toPlainText

  # The selectedText function returns the Unicode U+2029 paragraph separator character
  # instead of newline \n. Thus we have to unpack as Unicode, covert to newlines, and then repack
  #text = cursor.selectedText.unpack("U*")
  #text.collect! {|letter| if letter == 63 then 10 else letter end }
  #text.pack("U*")
end

#selection_end_line ⇒ Object

Return the line number (0 based) of the selection end



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# File 'lib/cosmos/gui/qt.rb', line 520

def selection_end_line
  cursor = textCursor
  cursor.setPosition(textCursor.selectionEnd)
  cursor.blockNumber
end

#selection_start_line ⇒ Object

Return the line number (0 based) of the selection start



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# File 'lib/cosmos/gui/qt.rb', line 513

def selection_start_line
  cursor = textCursor
  cursor.setPosition(textCursor.selectionStart)
  cursor.blockNumber
end