Class: JLDrill::Gtk::ProblemDisplay

Inherits:
Context::Gtk::VBox show all
Defined in:
lib/jldrill/views/gtk/widgets/ProblemDisplay.rb

Overview

This is the widget that displays the problem. The display is made up of 2 pieces: the QuestionPane, which shows the question for the problem and the AnswerPane which shows the answer. The ProblemDisplay also interacts with the PopupFactory to display the kanji/kana Popup when hovering over a character.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(view) ⇒ ProblemDisplay

Returns a new instance of ProblemDisplay.



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 19

def initialize(view)
    @view = view
    @context = @view.context
    super()
    @vpane = nil
    @question = QuestionPane.new(self)
    @answer = AnswerPane.new(self)
    @problem = nil
    @kanjiPopupFactory = KanjiPopupFactory.new(view)
    @vocabPopupFactory = VocabPopupFactory.new(view)
    # Default to Kanji Popups
    @popupFactory = @kanjiPopupFactory
    @lastEvent = nil
    @accel = Gtk::AccelGroup.new
    packVPane
    connectSignals
    afterWidgetIsAdded do
        gtkWidgetMainWindow.add_accel_group(@accel)
    end
end

Instance Attribute Details

#accel ⇒ Object (readonly)

Returns the value of attribute accel.



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 17

def accel
  @accel
end

#answer ⇒ Object (readonly)

Returns the value of attribute answer.



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 17

def answer
  @answer
end

#question ⇒ Object (readonly)

Returns the value of attribute question.



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 17

def question
  @question
end

Instance Method Details

#adjustSizeForAnswer ⇒ Object

Try to accomodate the answer size. Always keep 10% of the panel for the question, though. Note: This method is in an idle_add block because we have to wait until the pane has been redrawn before we calculate the size. By putting it in an idle_add block we can ensure that the events that draw the pane have finished.



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 137

def adjustSizeForAnswer
    Gtk.idle_add do
        maxPos = @vpane.max_position
        minPos = (maxPos.to_f * 0.10).to_i
        pos = maxPos - @answer.bufferSize
        if pos < minPos
            pos = minPos
        end
        # Don't adjust the size unnecessarily
        if pos < @vpane.position
            @vpane.position = pos
        end
    end
end

#adjustSizeForQuestion ⇒ Object

Attempt to adjust the size of the question pane to accomodate the size of the question Note: This method is in an idle_add block because we have to wait until the pane has been redrawn before we calculate the size. By putting it in an idle_add block we can ensure that the events that draw the pane have finished.



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 112

def adjustSizeForQuestion
    Gtk.idle_add do
        pos = @question.bufferSize
        # But don't adjust the size unnecessarily
        if pos > @vpane.position
            @vpane.position = pos
        end
        false
    end
end

#connectSignals ⇒ Object 



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 58

def connectSignals
    @question.contents.add_events(Gdk::Event::POINTER_MOTION_MASK)
    @question.contents.add_events(Gdk::Event::LEAVE_NOTIFY_MASK)
    @answer.contents.add_events(Gdk::Event::POINTER_MOTION_MASK)
    @answer.contents.add_events(Gdk::Event::LEAVE_NOTIFY_MASK)
    
    @accel.connect(Gdk::Keyval::GDK_space, 0, Gtk::ACCEL_VISIBLE) do
        @popupFactory.closePopup
        if @context.dictionaryLoaded?
            if @popupFactory == @kanjiPopupFactory
                @popupFactory = @vocabPopupFactory
            else
                @popupFactory = @kanjiPopupFactory
            end
            if !@lastEvent.nil?
                @popupFactory.notify(@lastEvent)
            end
        end
    end
    
    @question.contents.signal_connect('motion_notify_event') do |widget, motion|
        @lastEvent = MotionEvent.new(widget, motion)
        @popupFactory.notify(@lastEvent)
    end

    @answer.contents.signal_connect('motion_notify_event') do |widget, motion|
        @lastEvent = MotionEvent.new(widget, motion)
        @popupFactory.notify(@lastEvent)
    end
    
    @question.contents.signal_connect('leave_notify_event') do
        @popupFactory.closePopup
    end
    
    @answer.contents.signal_connect('leave_notify_event') do
        @popupFactory.closePopup
    end
end

#expandWithSavePath(filename) ⇒ Object 



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 171

def expandWithSavePath(filename)
    @context.expandWithSavePath(filename)
end

#expire ⇒ Object 



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 153

def expire
    if !@problem.nil?
        @question.expire
    end
end

#newProblem(problem) ⇒ Object 



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 97

def newProblem(problem)
    @popupFactory.closePopup
    @problem = problem
    @answer.clear(@problem)
    @question.update(problem)
    adjustSizeForQuestion
end

#packVPane ⇒ Object 



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 49

def packVPane
    @vpane = Gtk::VPaned.new
    @vpane.set_border_width(5)
    @vpane.pack1(@question, true, true)
    @vpane.pack2(@answer, true, true)
    self.pack_end(@vpane, true, true)
    @vpane.show
end

#removeVPane ⇒ Object 



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 40

def removeVPane
    if !@vpane.nil?
        @vpane.remove(@question)
        @vpane.remove(@answer)
        self.remove(@vpane)
        @vpane = nil
    end
end

#showAnswer ⇒ Object 



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 123

def showAnswer
    if !@problem.nil?
        @answer.update(@problem)
        adjustSizeForAnswer
    end
end

#showBusy(bool) ⇒ Object 



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 175

def showBusy(bool)
    if bool
        @vpane.window.set_cursor(Gdk::Cursor.new(Gdk::Cursor::WATCH))
        self.window.set_cursor(Gdk::Cursor.new(Gdk::Cursor::WATCH))
    else
        @vpane.window.set_cursor(nil)
        self.window.set_cursor(nil)
    end
    Gdk::flush
    @popupFactory.showBusy(bool)
    @question.showBusy(bool)
    @answer.showBusy(bool)
end

#showingAnswer? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 159

def showingAnswer?
    !@answer.clear?
end

#updateProblem(problem) ⇒ Object 



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# File 'lib/jldrill/views/gtk/widgets/ProblemDisplay.rb', line 163

def updateProblem(problem)
    needToDisplayAnswer = showingAnswer?
    newProblem(problem)
    if needToDisplayAnswer
        showAnswer
    end
end