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Simple Data grid for kivy. (Work in python 3 an 2)
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import json | |
from kivy.app import App | |
from kivy.lang import Builder | |
from kivy.properties import ListProperty | |
from kivy.uix.label import Label | |
from kivy.uix.togglebutton import ToggleButton | |
from kivy.uix.gridlayout import GridLayout | |
from kivy.uix.boxlayout import BoxLayout | |
from kivy.core.window import Window | |
from kivy.uix.scrollview import ScrollView | |
from functools import partial | |
Builder.load_string(''' | |
# define how clabel looks and behaves | |
<CLabel>: | |
canvas.before: | |
Color: | |
rgb: self.bgcolor | |
Rectangle: | |
size: self.size | |
pos: self.pos | |
<HeaderLabel>: | |
canvas.before: | |
Color: | |
rgb: self.bgcolor | |
Rectangle: | |
size: self.size | |
pos: self.pos | |
''' | |
) | |
class CLabel(ToggleButton): | |
bgcolor = ListProperty() | |
class HeaderLabel(Label): | |
bgcolor = ListProperty() | |
class DataGrid(GridLayout): | |
def __init__(self, header_data, cols_size, **kwargs): | |
super(DataGrid, self).__init__(**kwargs) | |
self.rows = 0 | |
self.size_hint_y = None | |
self.bind(minimum_height=self.setter('height')) | |
self.cols = len(header_data) | |
self.spacing = [1, 1] | |
self.counter = 0 | |
n = 0 | |
for hcell in header_data: | |
header_str = "[b]" + str(hcell) + "[/b]" | |
self.add_widget(HeaderLabel(text=header_str, markup=True, size_hint_y=None, | |
height=40, id="Header_Label", size_hint_x=cols_size[n], | |
bgcolor=[0.108, 0.476, 0.611])) | |
n += 1 | |
def add_row(self, row_data, row_align, cols_size): | |
self.rows += 1 | |
def change_on_press(clabel): | |
childs = clabel.parent.children | |
for ch in childs: | |
if ch.id == clabel.id: | |
row_n = ch.id[4:5] if len(ch.id) == 11 else ch.id[4:6] | |
for c in childs: | |
if ('row_' + str(row_n) + '_col_') in c.id: | |
change_on_release(c) | |
def change_on_release(clabel): | |
clabel.state = "down" if clabel.state == "normal" else "normal" | |
n = 0 | |
for item in row_data: | |
cell = CLabel(text=('[color=000000]' + item + '[/color]'), | |
# background_color_normal=ListProperty([1, 1, 1, 0.5]), | |
# background_color_down = ListProperty([1, 1, 1, 1]) | |
background_normal="background_normal.png", | |
background_down="background_pressed.png", | |
bgcolor=[1, 1, 1], | |
halign=row_align[n], | |
markup=True, | |
on_press=partial(change_on_press), | |
on_release=partial(change_on_release), | |
text_size=(0, None), | |
size_hint_x=cols_size[n], | |
size_hint_y=None, | |
height=40, | |
id=("row_" + str(self.counter) + "_col_" + str(n))) | |
cell_width = Window.size[0] * cell.size_hint_x | |
cell.text_size = (cell_width - 30, None) | |
cell.texture_update() | |
self.add_widget(cell) | |
n += 1 | |
self.counter += 1 | |
# self.rows += 1 | |
def remove_row(self, n_cols, instance, **kwargs): | |
childs = self.parent.children | |
selected = 0 | |
for ch in childs: | |
for c in reversed(ch.children): | |
if c.id != "Header_Label": | |
if c.state == "down": | |
self.remove_widget(c) | |
selected += 1 | |
if selected == 0: | |
for ch in childs: | |
count = 0 | |
while count < n_cols: | |
if n_cols != len(ch.children): | |
for c in ch.children: | |
if c.id != "Header_Label": | |
self.remove_widget(c) | |
count += 1 | |
break | |
else: | |
break | |
else: | |
break | |
def select_all(self, instance, **kwargs): | |
self.change_state("down") | |
def unselect_all(self, instance, **kwargs): | |
self.change_state("normal") | |
def change_state(self, state): | |
childs = self.parent.children | |
for ch in childs: | |
for c in ch.children: | |
if c.id != "Header_Label": | |
c.state = state | |
class Table(BoxLayout): | |
def __init__(self, header, **kwargs): | |
super(Table, self).__init__(orientation="horizontal") | |
self.col_size = [0.1, 0.5, 0.2, 0.2] | |
# header = ['ID', 'Nome', 'Preco', 'IVA'] | |
self.grid = DataGrid(header, self.col_size) | |
self.grid.rows = 1 | |
scroll = ScrollView(size_hint=(1, 1), size=(400, 500000), scroll_y=0, pos_hint={'center_x': .5, 'center_y': .5}) | |
scroll.add_widget(self.grid) | |
scroll.do_scroll_x, scroll.do_scroll_y = False, True | |
self.add_widget(scroll) | |
data_json = open('data.json') | |
data = json.load(data_json) | |
self.fill(data) | |
def fill(self, data): | |
body_alignment = ["center", "center", "center", "center"] | |
for d in data: | |
self.grid.add_row(d, body_alignment, self.col_size) | |
class MainApp(App): | |
def build(self): | |
return Table(['ID', 'Nome', 'Preco', 'IVA']) | |
if __name__ == '__main__': | |
MainApp().run() |
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