1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
#------------------------------------------------------------------------------
# Copyright (c) 2022-2024, Nucleic Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file LICENSE, distributed with this software.
#------------------------------------------------------------------------------
""" An example of how to override tolkit-supplied size hints on your widget.
The toolkit-supplied size hint for MPLCanvas is 480 x 640 pixels, which
prevents you from sizing the canvas smaller. This can be a problem when you are
presenting a large grid of Matplotlib figures.
This example demonstrates how to override the tookit-supplied size hint for
MPLCanvas. By setting resist_width, resist_height, hug_height, and hug_width to
'ignore', you can resize the figure almost freely in any direction.
This serves to demonstrate how the resist, hug and limit constraints interact
to control the size of a widget.
resist:
If "strong", the widget will not shrink smaller than the preferred size
(i.e., the constraint `width >= width_hint` or `height >= height_hint` is
set on the object).
hug:
If "strong", the widget will not change from the preferred size (i.e., the
constraint `width == width_hint` or `height == height_hint` is set on the
object).
limit:
If "strong", the widget will not expand larger than the preferred size
(i.e., the constraint `width <= width_hint` and `height <= height_hint` is
set on the object).
To allow a MPLCanvas to shrink smaller than the default size but not expand
larger:
resist = ignore or weak
hug = ignore or weak
limit = strong
To allow a MPLCanvas to expand larger than the default size but not shrink
smaller:
resist = strong
hug = ignore or weak
limit = ignore or weak
To disallow a MPLCanvas to change in size:
resist = strong, ignore or weak
hug = strong
limit = strong, ignore or weak
<< autodoc-me >>
"""
import matplotlib.pyplot as plt
import numpy as np
from enaml.widgets.api import (Form, Label, MPLCanvas, ObjectCombo, VGroup,
Window)
def make_figure():
# Constrained layout uses the kiwisolver engine and will ensure that the
# axes are formatted properly regardless of the size of the figure.
figure, axes = plt.subplots(constrained_layout=True)
x = np.arange(1000) / 1000
y = np.sin(2 * np.pi * 5 * x)
axes.plot(x, y)
return figure
enamldef Main(Window):
Form:
Label:
text = 'resist_height and resist_width'
ObjectCombo: resist:
items = ['strong', 'weak', 'ignore']
Label:
text = 'hug_height and hug_width'
ObjectCombo: hug:
items = ['strong', 'weak', 'ignore']
Label:
text = 'limit_height and limit_width'
ObjectCombo: limit:
items = ['strong', 'weak', 'ignore']
MPLCanvas: canvas:
resist_width << resist.selected
resist_height << resist.selected
hug_width << hug.selected
hug_height << hug.selected
limit_width << limit.selected
limit_height << limit.selected
# This specifies the minimum possible size for the window.
constraints = [(width >= 100) | 'strong', (height >= 100) | 'strong']
figure = make_figure()
|
