def delete_item(self, instance, *largs):
if instance.is_selected:
parent = self.widget.parent
parent.remove_widget(self.widget)
self.clear_selection(True)
if not self.canvas_area.children:
self.root_name = ""
#Instantiate the WidgetTree again if the
#root widget itself was deleted. We have to do this as
# treeview.remove all nodes wont remove the root at all.
self.widget_tree_box.remove_widget(self.widget_tree)
self.widget_tree = WidgetTree(self)
self.widget_tree_box.add_widget(self.widget_tree)
#Refresh the widget tree
self.widget_tree.refresh()
def __init__(self, **kwargs):
super(Designer, self).__init__(**kwargs)
self.root_name = ""
self.popup = None
self.file = ""
# A count variable to give ids to generated widget
self.count = 0
#This variable updates to True when ctrl is pressed
self.ctrl_pressed = False
#Instantiate the WidgetTree
self.widget_tree = WidgetTree(self)
self.widget_tree_box.add_widget(self.widget_tree)
#Instantiate MenuBar
self.menubar = MenuBar(designer = self, pos_hint = {'x':0,'top':1}, \
canvas_area = self.canvas_area, size_hint = (.70,None),height = 25)
self.add_widget(self.menubar)
#Instantiate right widgets bar
# We update the same widgets bar, and dont create new instances everytime
self.widgetbar = NewWidgetsMenu(self)
self.rightbox.add_widget(self.widgetbar)
#Initialize the keyboard and set up handlers for key press and release
self.canvas_area._keyboard = Window.request_keyboard(self._keyboard_closed,self)
self.canvas_area._keyboard.bind(on_key_down=self._on_keyboard_down)
self.canvas_area._keyboard.bind(on_key_up = self._on_keyboard_up)
# Setup canvas for highlighting
with self.canvas.after:
self.gcolor = Color(1, 1, 0, .25)
PushMatrix()
self.gtranslate = Translate(0, 0, 0)
self.grotate = Rotate(0, 0, 0, 1)
self.gscale = Scale(1.)
self.grect = Rectangle(size=(0, 0))
PopMatrix()
# Instantiate Statusbar
self.status_bar = StatusBar(size_hint = (1,.05))
self.leftbox.add_widget(self.status_bar)
#Show properties binding
# self.widget -> updated on_touch_down in 'canvas_area'
# So, whenever we have a new self.widget, we call show_properties
self.bind(widget = self.show_properties)
self.bind(widget = self.widget_tree.select_highlighted)
class Designer(FloatLayout):
widget = ObjectProperty(None, allownone=True)
#All components of the designer
status_bar = ObjectProperty(None)
canvas_area = ObjectProperty(None)
leftbox = ObjectProperty(None)
rightbox = ObjectProperty(None)
win = ObjectProperty(None)
menubar = ObjectProperty(None)
widget_tree = ObjectProperty(None)
widgetbar = None
numeric_keys = ObjectProperty(None)
boolean_keys = ObjectProperty(None)
string_keys = ObjectProperty(None)
remaining_keys = ObjectProperty(None)
numeric_keys, boolean_keys, string_keys,\
remaining_keys = ([] for i in range(4))
def __init__(self, **kwargs):
super(Designer, self).__init__(**kwargs)
self.root_name = ""
self.popup = None
self.file = ""
# A count variable to give ids to generated widget
self.count = 0
#This variable updates to True when ctrl is pressed
self.ctrl_pressed = False
#Instantiate the WidgetTree
self.widget_tree = WidgetTree(self)
self.widget_tree_box.add_widget(self.widget_tree)
#Instantiate MenuBar
self.menubar = MenuBar(designer = self, pos_hint = {'x':0,'top':1}, \
canvas_area = self.canvas_area, size_hint = (.70,None),height = 25)
self.add_widget(self.menubar)
#Instantiate right widgets bar
# We update the same widgets bar, and dont create new instances everytime
self.widgetbar = NewWidgetsMenu(self)
self.rightbox.add_widget(self.widgetbar)
#Initialize the keyboard and set up handlers for key press and release
self.canvas_area._keyboard = Window.request_keyboard(self._keyboard_closed,self)
self.canvas_area._keyboard.bind(on_key_down=self._on_keyboard_down)
self.canvas_area._keyboard.bind(on_key_up = self._on_keyboard_up)
# Setup canvas for highlighting
with self.canvas.after:
self.gcolor = Color(1, 1, 0, .25)
PushMatrix()
self.gtranslate = Translate(0, 0, 0)
self.grotate = Rotate(0, 0, 0, 1)
self.gscale = Scale(1.)
self.grect = Rectangle(size=(0, 0))
PopMatrix()
# Instantiate Statusbar
self.status_bar = StatusBar(size_hint = (1,.05))
self.leftbox.add_widget(self.status_bar)
#Show properties binding
# self.widget -> updated on_touch_down in 'canvas_area'
# So, whenever we have a new self.widget, we call show_properties
self.bind(widget = self.show_properties)
self.bind(widget = self.widget_tree.select_highlighted)
def _keyboard_closed(self):
'''Default keyboard closer necessary for initializing a keyboard'''
self.canvas_area._keyboard.unbind(on_key_down=self._on_keyboard_down)
self.canvas_area._keyboard = None
def _on_keyboard_down(self,keyboard,keycode,*largs):
'''If 'ctrl' button is pressed, it sets the corresponding
boolean True'''
modifiers = keycode[1]
if modifiers == 'ctrl':
self.ctrl_pressed = True
def _on_keyboard_up(self,keyboard,keycode,*largs):
''' If 'ctrl' key is released, it makes the corresponding boolean
go False'''
modifiers = keycode[1]
if modifiers == 'ctrl':
self.ctrl_pressed = False
def redraw_canvas(self, widget, *kwargs):
''' This function redraws the canvas of 'Layout' widgets whenever they are
moved or resized so that it is easy to recognize them in the canvas_area.
As the 'Layout' widgets themselves dont have a representation.'''
widget.canvas.clear()
thickness = 5
with widget.canvas:
Color(0.5, 0.5, 0.5, .5)
Rectangle(pos = widget.pos, size = (thickness, widget.height))
Rectangle(pos = widget.pos, size = (widget.width, thickness))
Rectangle(pos = (widget.x,widget.top), size = (widget.width, thickness))
Rectangle(pos = (widget.x + widget.width, widget.y), size = (thickness, widget.height))
def drag(self, widget, touch):
''' This function moves the widget in the canvas_area when it is
dragged (on_touch_move of the widget is called)'''
if self.widget == widget:
'''The above check is done so that only the selected widget
which is stored in "self.widget" is moved on drag.'''
widget.center = touch.pos
def on_touch_down(self,touch):
#First priority should be given to menubar as it has
#to be on top of canvas_area
if self.menubar.collide_point(*touch.pos) or self.menubar.menu_down:
super(Designer, self).on_touch_down(touch)
# Next we check if touch is outside the 'canvas_area' region
elif not self.canvas_area.collide_point(*touch.pos):
super(Designer, self).on_touch_down(touch)
#What's remaining is the canvas_area region
else:
canvas_area = self.canvas_area
temp_widget = self.pick(canvas_area, *touch.pos)
if temp_widget is not canvas_area:
self.widget = temp_widget
else:
self.widget = None
super(Designer, self).on_touch_down(touch)
return True
def pick(self, widget, x, y):
ret = None
if widget.collide_point(x, y):
ret = widget
x2, y2 = widget.to_local(x, y)
for child in widget.children:
ret = self.pick(child, x2, y2) or ret
return ret
def show_properties(self, widget, value):
'''This function is called whenever an added widget is selected
in the canvas area. It draws the widget properties bar
on the right, and sets up a highlighting area around the
selected widget'''
if value is not None:
#We have to stop previous highlighing
Clock.unschedule(self.highlight_at)
#Setting up highlighting of the selected widget
Clock.schedule_interval(self.highlight_at, 0)
# Here I instantiate a new PropertiesMenu everytime.
# Is this very expensive?
self.rightbox.clear_widgets()
properties_menu = PropertiesMenu(self)
self.rightbox.add_widget(properties_menu)
else:
#We have to stop highlighing
Clock.unschedule(self.highlight_at)
self.grect.size = (0, 0)
# Go to basic menu
self.rightbox.clear_widgets()
self.rightbox.add_widget(self.widgetbar)
def rebuild_menu(self, node, value, parent = None):
'''This function is called when a widget needs to be added
as a child to one of the added layouts in the canvas area'''
if value:
self.rightbox.clear_widgets()
self.widgetbar.build_menu(parent = parent)
self.rightbox.add_widget(self.widgetbar)
def delete_item(self, instance, *largs):
if instance.is_selected:
parent = self.widget.parent
parent.remove_widget(self.widget)
self.clear_selection(True)
if not self.canvas_area.children:
self.root_name = ""
#Instantiate the WidgetTree again if the
#root widget itself was deleted. We have to do this as
# treeview.remove all nodes wont remove the root at all.
self.widget_tree_box.remove_widget(self.widget_tree)
self.widget_tree = WidgetTree(self)
self.widget_tree_box.add_widget(self.widget_tree)
#Refresh the widget tree
self.widget_tree.refresh()
def clear_selection(self,*kwargs):
'''This function takes away the highlight
and also nullifies the self.widget'''
self.widget = None
#We have to stop highlighing
Clock.unschedule(self.highlight_at)
self.grect.size = (0, 0)
def highlight_at(self, *largs):
'''A function to highlight the current self.widget'''
gr = self.grect
widget = self.widget
# determine rotation
a = Vector(1, 0)
b = Vector(widget.to_window(*widget.to_parent(0, 0)))
c = Vector(widget.to_window(*widget.to_parent(1, 0))) - b
angle = -a.angle(c)
# determine scale
scale = c.length()
# apply transform
gr.size = widget.size
self.gtranslate.xy = Vector(widget.to_window(*widget.pos))
self.grotate.angle = angle
self.gscale.scale = scale
def give_id(self):
self.count = self.count + 1
return "widget"+str(self.count)