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main.py
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main.py
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#!/usr/bin/python
PHOTOS_PATH = 'http://172.16.90.1/Photos'
import os
import time
import kivy
from kivy.metrics import dp
from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen, SlideTransition
from kivy.uix.filechooser import FileChooserIconView
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.scatter import Scatter
from kivy.uix.scrollview import ScrollView
from kivy.uix.image import AsyncImage
from kivy.uix.widget import Widget
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.graphics import Rectangle, Color, Ellipse, Line, Fbo, ClearColor, ClearBuffers, Translate
from kivy.clock import Clock
from kivy.uix.widget import WidgetException
import tempfile
def a(arg):
return arg
kivy.uix.filechooser.normpath = a
kivy.uix.filechooser.realpath = a
import filesystemhttp
filesystem = filesystemhttp.FileSystemURL()
from kivy.loader import Loader
Builder.load_string("""
[FileGalleryEntry@Widget]:
locked: False
path: ctx.path
selected: self.path in ctx.controller().selection
size_hint: None, None
on_touch_down: self.collide_point(*args[1].pos) and ctx.controller().entry_touched(self, args[1])
on_touch_up: self.collide_point(*args[1].pos) and ctx.controller().entry_released(self, args[1])
size: ctx.controller().thumbsize+dp(52), ctx.controller().thumbsize+dp(52)
canvas:
Color:
rgba: 1, 1, 1, 1 if self.selected else 0
BorderImage:
border: 8, 8, 8, 8
pos: root.pos
size: root.size
source: 'atlas://data/images/defaulttheme/filechooser_selected'
AsyncImage:
allow_stretch: True
size: ctx.controller().thumbsize,ctx.controller().thumbsize
source: ctx.controller().get_thumb(ctx)
pos: root.x + dp(24), root.y + dp(40)
Label:
text: ctx.name
text_size: (root.width, self.height)
halign: 'center'
shorten: True
size: ctx.controller().thumbsize, '16dp'
pos: root.center_x - self.width /2, root.y + dp(16)
Label:
text: '{}'.format(ctx.controller().get_time(ctx))
font_size: '11sp'
color: .8, .8, .8, 1
size: '100dp', '16sp'
pos: root.pos
pos: root.center_x - self.width /2, root.y
halign: 'center'
<image_button>
canvas:
Clear
<blank_canvas>
canvas.before:
Color:
rgba: 1,1,1,1
Rectangle:
pos: self.pos
size: self.size
""")
class blank_canvas(Widget):
def __init__(self, line_width=40, *args):
super(blank_canvas, self).__init__(*args)
self.line_width=line_width
self.bind(size=self.draw_lines, pos=self.draw_lines)
def draw_lines(self, *args):
line_offset = 0
num_lines = (self.height/self.line_width)
self.canvas.clear()
with self.canvas:
for i in xrange(1,int(num_lines/2)):
line_offset += self.line_width
Color(0,0,0,0.75)
Line(width=1, points=[self.pos[0], self.pos[1]+line_offset, self.pos[0]+self.width, self.pos[1]+line_offset])
line_offset += self.line_width
Color(0.5,0.5,1,0.5)
Line(width=1, points=[self.pos[0], self.pos[1]+line_offset, self.pos[0]+self.width, self.pos[1]+line_offset])
line_offset += self.line_width
Color(0,0,0,0.75)
Line(width=1, points=[self.pos[0], self.pos[1]+line_offset, self.pos[0]+self.width, self.pos[1]+line_offset])
Color(1,0,0,0.25)
Line(width=1.5, points=[self.pos[0]+(self.line_width*1.5), self.pos[1]+self.height, self.pos[0]+(self.line_width*1.5), self.pos[1]])
class FileChooserGalleryView(FileChooserIconView):
thumbsize = dp(119)
_ENTRY_TEMPLATE = 'FileGalleryEntry'
def __init__(self, *args, **kwargs):
super(FileChooserGalleryView, self).__init__(*args, **kwargs)
self.register_event_type('on_select_folder')
def open_entry(self, entry):
self.current_entry = entry
self.dispatch('on_select_folder')
def on_select_folder(self):
pass
def get_thumb(self, ctx):
if ctx.path == '../':
return 'atlas://data/images/defaulttheme/filechooser_folder'
elif ctx.isdir:
img_file = filesystem.normpath(filesystem.join(ctx.path, 'folder.jpg'))
if filesystem.is_file(img_file):
return img_file
else:
return 'atlas://data/images/defaulttheme/filechooser_folder'
elif ctx.path.endswith('.jpg'):
return ctx.path
else:
return 'atlas://data/images/defaulttheme/filechooser_%s' % ('folder' if ctx.isdir else 'file')
def get_time(self, ctx):
return time.ctime(filesystem.getmtime(ctx.path))
class PaintWidget(AsyncImage):
do_drawing = True
done_draw = False
def save_png(self, filename):
if not self.done_draw: # Don't save a blank drawing.
return False
self.do_drawing = False
### Kivy 1.8.1 has an export_to_png function in the widget class. I'm not using 1.8.1 so I'm writing my own.
## Mostly copy-pasted from: https://github.com/kivy/kivy/blob/master/kivy/uix/widget.py (2014/06/16)
if self.parent is not None:
canvas_parent_index = self.parent.canvas.indexof(self.canvas)
self.parent.canvas.remove(self.canvas)
fbo = Fbo(size=self.size_const)
with fbo:
ClearColor(0, 0, 0, 0) # I changed this from 0,0,0,1 to 0,0,0,0 so that I could have a transparent background.
ClearBuffers()
Translate(-self.draw_const[0], -self.draw_const[2], 0)
fbo.add(self.canvas)
fbo.draw()
try:
fbo.texture.save(filename)
success = True
kivy.logger.Logger.debug("PaintWidget: Saved file %s" % filename)
except Exception as e:
success = False
kivy.logger.Logger.error("PaintWidget: Can't save file: %s" % filename)
kivy.logger.Logger.exception(e)
finally:
fbo.remove(self.canvas)
if self.parent is not None:
self.parent.canvas.insert(canvas_parent_index, self.canvas)
self.do_drawing = True
return success
def on_touch_down(self, touch):
if self.do_drawing:
center = self.size[0]/2, self.size[1]/2
const_halved = self.size_const[0]/2, self.size_const[1]/2
self.draw_const = [center[0]-const_halved[0], center[0]+const_halved[0], center[1]-const_halved[1], center[1]+const_halved[1]]
if touch.x > self.draw_const[0] and touch.x < self.draw_const[1] and touch.y > self.draw_const[2] and touch.y < self.draw_const[3]:
self.done_draw = True
with self.canvas.after:
Color(1,1,1)
diameter = 4
Ellipse(pos=(touch.x-(diameter/2), touch.y-(diameter/2)), size=(diameter, diameter))
touch.ud['line_outer'] = Line(points=(touch.x, touch.y), width=diameter)
Color(0,0,0)
Ellipse(pos=(touch.x-((diameter-1)/2), touch.y-((diameter-1)/2)), size=(diameter-1, diameter-1))
touch.ud['line_inner'] = Line(points=touch.ud['line_outer'].points, width=diameter-1)
def on_touch_move(self, touch):
if touch.x < self.draw_const[0]:
touch.x = self.draw_const[0]
if touch.x > self.draw_const[1]:
touch.x = self.draw_const[1]
if touch.y < self.draw_const[2]:
touch.y = self.draw_const[2]
if touch.y > self.draw_const[3]:
touch.y = self.draw_const[3]
if touch.ud.has_key('line_outer'):
touch.ud['line_outer'].points += [touch.x, touch.y]
if touch.ud.has_key('line_inner'):
touch.ud['line_inner'].points = touch.ud['line_outer'].points
def clear(self):
self.canvas.after.clear()
self.do_drawing = True
self.done_draw = False
class ImageCanvas(Widget):
def update_rect(self, instance, value):
self.img.size = self.size
self.img.pos = self.pos
self.blank.size = self.size
self.blank.pos = self.pos
instance.label.center_x = instance.center_x # I should need to set the y pos of this, but it's magically placed in just the right spot.
def __init__(self, *args, **kwargs):
super(ImageCanvas, self).__init__(*args, **kwargs)
with self.canvas.after:
self.label = Label(font_size=32, color=(1,0,0,1))
self.bind(size=self.update_rect, pos=self.update_rect)
self.blank = blank_canvas()
self.add_widget(self.blank)
self.blank.opacity = 1
self.img = AsyncImage(source='', allow_stretch=True)
self.add_widget(self.img)
@property
def source(self):
return self.img.source
@source.setter
def source(self, value):
self.img.source = value
if filesystem.is_file(self.source):
self.blank.opacity = 0
self.img.opacity = 1
else:
self.blank.opacity = 1
self.img.opacity = 0
class ViewerScreen(Screen):
def drawing_toggle(self, *args):
if self.btns[1] == 'ic_action_view_image.png':
self.btns[1] = 'ic_action_view_drawing.png'
self.both.remove_widget(self.overlay)
elif self.btns[1] == 'ic_action_view_drawing.png':
self.btns[1] = 'ic_action_view_image.png'
self.both.add_widget(self.overlay)
app.update_buttons()
def set_image(self, img_fn):
self.image.source = img_fn
app.paint_screen.image.source = img_fn
try:
filesystem.listdir(img_fn+'.overlays')
except:
app.paint_screen.painter.color = (0,0,0,0)
self.btns[1] = None
self.both.remove_widget(self.overlay)
else:
self.btns[1] = 'ic_action_view_image.png'
self.overlay.source = filesystem.join(img_fn+'.overlays', filesystem.listdir(img_fn+'.overlays')[-1])
app.paint_screen.painter.color = (1,1,1,1)
app.paint_screen.painter.source = self.overlay.source
try: self.both.add_widget(self.overlay)
except WidgetException: pass # The overlay widget may already be added, in which case I don't care.
self.both.scale = 1
self.both.rotation = 0
self.both.pos = [0,0]
def __init__(self, *args, **kwargs):
super(ViewerScreen, self).__init__(*args, **kwargs)
self.layout = FloatLayout()
self.add_widget(self.layout)
self.image = ImageCanvas(pos_hint={'center_x': 0.5, 'center_y': 0.5})
self.overlay = AsyncImage(pos_hint={'center_x': 0.5, 'center_y': 0.5})
self.both = Scatter(size_hint=[1,1], do_rotation = False)
self.both.add_widget(self.image)
self.layout.add_widget(self.both)
self.both.bind(size=self.fix_size)
def fix_size(self, *args):
self.image.size = self.both.size
self.overlay.size = self.both.size
class PaintScreen(Screen):
def update_bg(self, instance, value):
instance.bg_col.size = instance.size
instance.bg_col.pos = instance.pos
if self.image.img.opacity == 1:
self.painter.size_const = self.image.img.get_norm_image_size()
elif self.image.blank.opacity == 1:
self.painter.size_const = self.painter.size
def __init__(self, *args, **kwargs):
super(PaintScreen, self).__init__(*args, **kwargs)
with self.canvas.before:
Color(0,0,0,1)
self.bg_col = Rectangle()
self.bind(size=self.update_bg, pos=self.update_bg)
self.image = ImageCanvas()
self.add_widget(self.image)
self.painter = PaintWidget()
self.add_widget(self.painter)
class image_button(Button):
def __init__(self, source = '', *args, **kwargs):
super(image_button, self).__init__(*args, **kwargs)
self.blank = blank_canvas(line_width=10)
self.add_widget(self.blank)
self.img = AsyncImage(source='', allow_stretch=True)
self.add_widget(self.img)
self.source = source
self.bind(size=self.update_img, pos=self.update_img)
def update_img(self, instance, value):
instance.blank.size = instance.size
instance.blank.pos = instance.pos
instance.img.size = instance.size
instance.img.pos = instance.pos
@property
def source(self):
return self.img.source
@source.setter
def source(self, value):
self.img.source = value
if filesystem.is_file(value):
self.blank.opacity = 0
self.img.opacity = 1
else:
self.blank.opacity = 1
self.img.opacity = 0
class PhotoStrip(ScrollView):
def on_press(self, filename):
pass
def on_release(self, filename):
pass
def __init__(self, *args, **kwargs):
super(PhotoStrip, self).__init__(size_hint=(1,1), pos_hint={'center_x': 0.5, 'center_y': 0.5}, do_scroll_x=False, *args, **kwargs)
self.register_event_type('on_press')
self.register_event_type('on_release')
self.strip = AsyncImage(source='photos-strip.png', allow_stretch=True, size_hint_y=1.8)
self.add_widget(self.strip)
self.image0 = image_button()
self.image0.bind(on_press=self.press_btn, on_release=self.release_btn)
self.strip.add_widget(self.image0)
self.image1 = image_button()
self.image1.bind(on_press=self.press_btn, on_release=self.release_btn)
self.strip.add_widget(self.image1)
self.image2 = image_button()
self.image2.bind(on_press=self.press_btn, on_release=self.release_btn)
self.strip.add_widget(self.image2)
self.image3 = image_button()
self.image3.bind(on_press=self.press_btn, on_release=self.release_btn)
self.strip.add_widget(self.image3)
self.strip.bind(size=self.update_buttons,pos=self.update_buttons)
def set_path(self, path):
print path
path = filesystem.normpath(path)
print path
self.scroll_y = 1
if 'effect_y' in dir(self): # Kivy 1.6.0 doesn't have effect_y
self.effect_y.value = self.effect_y.min # This is to work around a bug with the ScrollView (https://github.com/kivy/kivy/issues/2038)
self.image0.source = filesystem.join(path, '0.jpg')
self.image1.source = filesystem.join(path, '1.jpg')
self.image2.source = filesystem.join(path, '2.jpg')
self.image3.source = filesystem.join(path, 'blank')
def press_btn(self, btn):
self.dispatch('on_press', btn.source)
def release_btn(self, btn):
self.dispatch('on_release', btn.source)
def update_buttons(self, instance, value):
spacing = 20
padding = 25
offset = padding
for img in [self.image0, self.image1, self.image2, self.image3]:
img.size = (instance.norm_image_size[0]/60)*43, (instance.norm_image_size[1]-((spacing*3)+(padding*2)))/4
img.center_x = instance.center_x
img.center_y = instance.top-((img.height/2)+offset)
offset += img.height+spacing
class Main(App):
# These are to handle Android switching away from the app or locking the screen.
# I don't want to do anything on pause, but I do want to go back to the main screen if it was paused for a while.
def on_pause(self):
kivy.logger.Logger.debug('Main: pausing')
self.pause_time = time.time()
return True
def on_resume(self):
kivy.logger.Logger.debug('Main: resuming')
if time.time()-self.pause_time > 5:
self.screen_manager.current = 'chooser'
# This disables kivy's settings panel, normally accessible by pressing F1
def open_settings(self, *args):
pass
## "Navbar" button functions
def pressed_win(self, *args):
if 'btn_functions' in dir(self.screen_manager.current_screen) and self.screen_manager.current_screen.btn_functions[0] != None:
self.screen_manager.current_screen.btn_functions[0]()
return False # I'm returning false here so that the button still triggers the next on_release event
def pressed_home(self, *args):
if 'btn_functions' in dir(self.screen_manager.current_screen) and self.screen_manager.current_screen.btn_functions[1] != None:
self.screen_manager.current_screen.btn_functions[1]()
return False # I'm returning false here so that the button still triggers the next on_release event
def pressed_back(self, *args):
if 'btn_functions' in dir(self.screen_manager.current_screen) and self.screen_manager.current_screen.btn_functions[2] != None:
self.screen_manager.current_screen.btn_functions[2]()
return False # I'm returning false here so that the button still triggers the next on_release event
def update_buttons(self, *args):
if 'btns' in dir(self.screen_manager.current_screen):
win, home, back = self.screen_manager.current_screen.btns
if win == None:
self.win_btn.opacity = 0
else:
self.win_btn.opacity = 1
self.win_btn.background_normal = win
self.win_btn.background_down = self.win_btn.background_normal
if home == None:
self.home_btn.opacity = 0
else:
self.home_btn.opacity = 1
self.home_btn.background_normal = home
self.home_btn.background_down = self.home_btn.background_normal
if back == None:
self.back_btn.opacity = 0
else:
self.back_btn.opacity = 1
self.back_btn.background_normal = back
self.back_btn.background_down = self.back_btn.background_normal
## These functions should probably be put somewhat inside the painter widget.
def finish_paint(self, good = True):
self.paint_screen.image.label.text = ''
if good:
self.goto_screen('photostrip', 'right')
def save_painter(self):
savedir = self.paint_screen.image.source+'.overlays'
try:
filesystem.listdir(savedir)
except:
if not filesystem.is_dir(savedir):
filesystem.mkdir(savedir)
index = 0
filename = '%02d.png'
try:
dircontents = os.listdir(savedir)
except: # Probably using the HTTP filesystem.
tmpused = True
filepath = tempfile.mktemp() + '.png'
else:
tmpused = False
while filename % index in dircontents:
index += 1
filepath = filesystem.join(savedir, filename % index)
if self.paint_screen.painter.save_png(filepath) and (not tmpused or filesystem.savefile(savedir, 'png', filepath)): # If saving the file works and either the tmpfile was not used ot the second stage of saving works.
self.paint_screen.painter.do_drawing = False # Stop drawing on the image until the canvas gets cleared (by switching screen)
self.paint_screen.image.label.color = (0,0.75,0,1)
self.paint_screen.image.label.text = 'Saved'
Clock.schedule_once(lambda arg: self.finish_paint(True), 2)
else:
self.paint_screen.image.label.color = (0.75,0,0,1)
self.paint_screen.image.label.text = 'FAILED to save the drawing, sorry.'
Clock.schedule_once(lambda arg: self.finish_paint(False), 3)
def goto_screen(self, screen_name, direction):
self.screen_manager.transition.direction = direction
self.screen_manager.current = screen_name
# This function is just to keep the screen_manager size with window resizing
def update_size(self, root, value):
self.screen_manager.size = (root.width-192, root.height)
def build(self):
root = FloatLayout()
## Screen Manager
self.screen_manager = ScreenManager(transition=SlideTransition(),size_hint=[None,None], pos_hint={'left': 1})
root.bind(size=self.update_size)
root.add_widget(self.screen_manager)
## "Navbar" Buttons
## These are meant to work like the Android navbar would, and I have named them as such.
# These two functions are used for a indicator for the button being pressed.
def rend_circle(btn):
with btn.canvas:
Color(1,1,1,0.25)
size = (btn.size[0], btn.size[1]*1.5)
btn.hl = Ellipse(pos=( btn.pos[0]+((btn.size[0]/2)-(size[0]/2)), btn.pos[1]+((btn.size[1]/2)-(size[1]/2)) ), size=size)
Color(1,1,1,1) # Reset the color, otherwise the background goes dark
def derend_circle(btn):
btn.canvas.remove(btn.hl)
self.win_btn = Button(text='', size_hint=[None,None],size=[192,192],height=192,pos_hint={'right': 1, 'center_y': 0.8})
self.win_btn.bind(on_press=rend_circle)
self.win_btn.bind(on_release=derend_circle)
self.win_btn.bind(on_release=self.pressed_win)
self.home_btn = Button(text='', size_hint=[None,None],size=[192,192],pos_hint={'right': 1, 'center_y': 0.5})
self.home_btn.bind(on_press=rend_circle)
self.home_btn.bind(on_release=derend_circle)
self.home_btn.bind(on_release=self.pressed_home)
self.back_btn = Button(text='', size_hint=[None,None],size=[192,192],pos_hint={'right': 1, 'center_y': 0.2})
self.back_btn.bind(on_press=rend_circle)
self.back_btn.bind(on_release=derend_circle)
self.back_btn.bind(on_release=self.pressed_back)
root.add_widget(self.win_btn)
root.add_widget(self.home_btn)
root.add_widget(self.back_btn)
# Render the background
def update_rect(instance, value):
instance.bg.pos = instance.pos
instance.bg.size = instance.size
self.screen_manager.bind(size=update_rect,pos=update_rect)
with self.screen_manager.canvas.before:
self.screen_manager.bg = Rectangle(source='background.png')
Loader.loading_image = 'loading.png'
## FileChooser
chooser_screen = Screen(name='chooser')
chooser = FileChooserGalleryView(rootpath=PHOTOS_PATH)
chooser.file_system = filesystem
def select_folder(chooser, photostrip):
photostrip.set_path(chooser.current_entry.path)
self.goto_screen('photostrip', 'left')
chooser.bind(on_select_folder=lambda args:select_folder(chooser, photostrip))
chooser_screen.add_widget(chooser)
## Painter
self.paint_screen = PaintScreen(name='painter')
self.paint_screen.bind(on_leave=lambda src: self.paint_screen.painter.clear())
## ImageViewer
viewer_screen = ViewerScreen(name='viewer')
viewer_screen.bind(on_enter=lambda src:setattr(self.paint_screen.image,'source',viewer_screen.image.source))
## Photo strip
def foo(a):
print type(a), a
photostrip_screen = Screen(name='photostrip')
photostrip = PhotoStrip()
photostrip_screen.add_widget(photostrip)
photostrip.bind(
on_press=lambda src,fn:viewer_screen.set_image(fn),
on_release=lambda src,fn: self.goto_screen('painter', 'left'),
)
# Set up the icons and functions for the navbar buttons
chooser_screen.btns = [None, 'ic_action_refresh.png', None]
chooser_screen.btn_functions = [None, chooser._trigger_update, None]
photostrip_screen.btns = [None, None, 'ic_sysbar_back.png']
photostrip_screen.btn_functions = [None, None, lambda:self.goto_screen('chooser', 'right')]
viewer_screen.btns = ['ic_action_edit.png', None, 'ic_sysbar_back.png']
viewer_screen.btn_functions = [lambda:self.goto_screen('painter', 'left'), viewer_screen.drawing_toggle, lambda:self.goto_screen('photostrip', 'right')]
self.paint_screen.btns = ['ic_action_save.png', None, 'ic_action_discard.png']
self.paint_screen.btn_functions = [self.save_painter, None, lambda:self.goto_screen('photostrip', 'right')]
# Finally, add the screens to the manager
self.screen_manager.add_widget(chooser_screen)
self.screen_manager.add_widget(photostrip_screen)
self.screen_manager.add_widget(viewer_screen)
self.screen_manager.add_widget(self.paint_screen)
# Set the navbar buttons from the variables set above
self.screen_manager.transition.bind(on_complete=self.update_buttons)
self.update_buttons()
return root
global app
app = Main()
app.run()