I'm trying to make a kind of basic photo editor in kivy. It's supposed to allow the placement and transformation of a base image as well as adding text labels. I'm implementing this functionality using scatters, but I'm running across a problem where I can't get the root scatter to match the size of its child label or image. This makes it hard to actually drag and scale the image and labels, as there's invisible scatter space around each of them that makes it practically impossible to drag and resize the desired scatter.
Here's my python code:
from kivy.app import App
from kivy.uix.scatter import Scatter
from kivy.uix.button import Button
from kivy.uix.popup import Popup
from kivy.uix.scatterlayout import ScatterLayout
from kivy.uix.label import Label
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.anchorlayout import AnchorLayout
from kivy.uix.textinput import TextInput
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.uix.colorpicker import ColorPicker
from kivy.logger import Logger
from kivy.graphics import Color, Ellipse, Line
from kivy.properties import ListProperty
from kivy.properties import NumericProperty
from kivy.properties import ObjectProperty
from kivy.core.window import Window
import os
#from editor import PhotoEditor
import random
#Each class def is a different screen.
class WelcomeScreen(Screen):
pass
class PhoneSelection(Screen):
pass
class StyleSelection(Screen):
pass
class ColorSelection(Screen):
pass
class DesignSelection(Screen):
pass
class UploadPhoto(Screen):
pass
class PatternSelection(Screen):
pass
class PhotoEditor(Screen):
color = ListProperty([1,1,1,1])
word = 'Enter Text'
font_size = 14
font_type = ''
image_path = 'Mike1.png'
erase = False
def open_popup(self):
popup = ColorPopup()
popup.open()
def close_popup(self):
color_bttn = self.ids['color_bttn']
color_bttn.background_color = self.color
color_bttn.color = [1 - self.color[0], 1 - self.color[1], 1 - self.color[2], 1]
def open_text_entry(self):
al = AnchorLayout(anchor_x='center',anchor_y='top')
popup = TextLabelEntry()
al.add_widget(popup)
popup.open()
def close_text_entry(self):
l = Label(text=self.word,color=self.color,font_size=40)
t = TextLabel()
t.add_widget(l)
t.size = l.size
self.ids['il'].add_widget(t)
class Confirm(Screen):
pass
class Pay(Screen):
pass
class ThankYou(Screen):
pass
#These classes are used as parts of the UI for other screens.
class ColorPopup(Popup):
pass
class TextLabel(Scatter):
pass
class TextLabelEntry(Popup):
fonts = []
def font_selector(self):
for file in os.listdir("/mydir"):
if file.endswith(".tff"):
fonts.append(file)
class ImageLabel(ScatterLayout):
pass
class Variables():
#used for storing info about the case to be printed
phone_type = ""
phone_color = ""
phone_style = ""
phone_design_option = ""
total_price = 0.0
#This is the main class that has all the app info.
class MainApp(App):
#Window.size = (1920, 1080)
#Window.fullscreen = True
#list of names for each screen. Each name is used as an ID when changing the current screen.
screens = ["welcome","choose_phone","choose_style","choose_color","choose_design","upload_photo","choose_pattern","photo_edit","confirm","pay","thanks"]
vars = Variables()
#The manager that holds all the screens and allows transitioning between them.
SM = ScreenManager()
def build(self):
#list of names for each screen. Each name is used as an ID when changing the current screen.
screens = ["welcome","choose_phone","choose_style","choose_color","choose_design","upload_photo","choose_pattern","photo_edit","confirm","pay","thanks"]
#Add all screens to the manager and assign the corresponding ID.
self.SM.add_widget(WelcomeScreen(name=screens[0]))
self.SM.add_widget(PhoneSelection(name=screens[1]))
self.SM.add_widget(StyleSelection(name=screens[2]))
self.SM.add_widget(ColorSelection(name=screens[3]))
self.SM.add_widget(DesignSelection(name=screens[4]))
self.SM.add_widget(UploadPhoto(name=screens[5]))
self.SM.add_widget(PatternSelection(name=screens[6]))
self.SM.add_widget(PhotoEditor(name=screens[7]))
self.SM.add_widget(Confirm(name=screens[8]))
self.SM.add_widget(Pay(name=screens[9]))
self.SM.add_widget(ThankYou(name=screens[10]))
#Set the current screen to the welcome screen.
self.SM.current = screens[0]
return self.SM
#Runs the app.
if __name__ == "__main__":
t = MainApp();
t.run()
Most of the action happens in the PhotoEditor class.
And here's my kivy code:
<WelcomeScreen>:
AnchorLayout:
anchor_x: 'center'
anchor_y: 'bottom'
Button:
text: "Welcome!"
size_hint: 0.1,0.1
on_press: root.manager.current = app.screens[7]
<PhoneSelection>:
BoxLayout:
Button:
text: "iPhone 4/4s"
on_press:
root.manager.current = app.screens[1]
app.vars.phone_type = "iPhone YAYAYA"
self.text = str(app.vars.phone_type)
<PhotoEditor>
id: PhotoEditor
FloatLayout:
id: il
ImageLabel:
auto_bring_to_front: False
scale_min: 100/img.width
scale_max: 5000/img.width
id: ilr
Image:
id: img
source: root.image_path
#width: il.width
#height: il.height/self.image_ratio
on_touch_up:
if int(ilr.rotation % 15) < 8: ilr.rotation = int(ilr.rotation - int(ilr.rotation % 15))
if int(ilr.rotation % 15) >= 8: ilr.rotation = int(ilr.rotation - int(ilr.rotation % 15)) + 15
Image:
id: ovrly
source: 'overlay/iphone6.png'
AnchorLayout:
anchor_x: 'left'
anchor_y: 'center'
BoxLayout:
size_hint: 0.1, 0.5
orientation: 'vertical'
Button:
text: 'Color'
color: [1 - root.color[0], 1 - root.color[1], 1 - root.color[2], 1]
background_color: root.color
background_normal: ''
id: color_bttn
on_press: root.open_popup()
Button:
group: 'text'
text: 'Text'
on_press: root.open_text_entry()
<ColorPopup>
size_hint: .5, .5
auto_dismiss: False
title: 'Hello world'
on_open:
r.value = int(r.max * app.SM.get_screen('photo_edit').color[0])
g.value = int(g.max * app.SM.get_screen('photo_edit').color[1])
b.value = int(b.max * app.SM.get_screen('photo_edit').color[2])
AnchorLayout:
anchor_x: 'center'
anchor_y: 'center'
AnchorLayout:
anchor_x: 'center'
anchor_y: 'center'
BoxLayout:
orientation: 'vertical'
Slider:
id: r
on_value:
app.SM.get_screen('photo_edit').color[0] = self.value_normalized
bttn.background_color = app.SM.get_screen('photo_edit').color
bttn.color = [1 - app.SM.get_screen('photo_edit').color[0], 1 - app.SM.get_screen('photo_edit').color[1], 1 - app.SM.get_screen('photo_edit').color[2], 1]
Slider:
id: g
on_value:
app.SM.get_screen('photo_edit').color[1] = self.value_normalized
bttn.background_color = app.SM.get_screen('photo_edit').color
bttn.color = [1 - app.SM.get_screen('photo_edit').color[0], 1 - app.SM.get_screen('photo_edit').color[1], 1 - app.SM.get_screen('photo_edit').color[2], 1]
Slider:
id: b
on_value:
app.SM.get_screen('photo_edit').color[2] = self.value_normalized
bttn.background_color = app.SM.get_screen('photo_edit').color
bttn.color = [1 - app.SM.get_screen('photo_edit').color[0], 1 - app.SM.get_screen('photo_edit').color[1], 1 - app.SM.get_screen('photo_edit').color[2], 1]
Button:
text: 'Close'
id: bttn
background_normal: ''
on_press:
app.SM.get_screen('photo_edit').close_popup()
root.dismiss()
<ImageLabel>
<TextLabel>
size: lbl.size
on_touch_down: if app.SM.get_screen('photo_edit').erase == True: app.SM.get_screen('photo_edit').remove_widget(self)
Label:
id: lbl
#on_size: root.size = self.size
<TextLabelEntry>
size_hint: 0.5,0.5
title: 'Text Entry'
auto_dismiss: True
on_open:
app.SM.get_screen('photo_edit').word = 'Enter Text'
BoxLayout:
size_hint: 0.5,0.2
orientation: 'horizontal'
TextInput:
id: txt
text: 'Enter Text'
on_text: app.SM.get_screen('photo_edit').word = self.text
Button:
on_press:
app.SM.get_screen('photo_edit').close_text_entry()
root.dismiss()
This has been a problem for me for a while, and no matter what I've tried I can't get it fixed. Any help doing so would be greatly appreciated.
