|
1
|
|
|
import ctypes |
|
2
|
|
|
|
|
3
|
|
|
from pypen.drawing.color import Color |
|
4
|
|
|
from pypen.utils.math import TAU |
|
5
|
|
|
from pypen.settings import default_settings |
|
6
|
|
|
import cairo |
|
7
|
|
|
from pyglet import gl, image |
|
8
|
|
|
|
|
9
|
|
|
class PyPen(): |
|
10
|
|
|
def __init__(self, user_sketch): |
|
11
|
|
|
self.user_sketch = user_sketch |
|
12
|
|
|
|
|
13
|
|
|
self.surface_data = None |
|
14
|
|
|
self.surface = None |
|
15
|
|
|
self.context = None |
|
16
|
|
|
|
|
17
|
|
|
self.update_settings() |
|
18
|
|
|
self._fix_primitive_functions() |
|
19
|
|
|
|
|
20
|
|
|
def _fix_primitive_functions(self): |
|
21
|
|
|
self.user_sketch.fill_screen = self.fill_screen |
|
22
|
|
|
self.user_sketch.clear_screen = self.clear_screen |
|
23
|
|
|
self.user_sketch.clear = self.clear |
|
24
|
|
|
|
|
25
|
|
|
self.user_sketch.rectangle = self.rectangle |
|
26
|
|
|
self.user_sketch.circle = self.circle |
|
27
|
|
|
self.user_sketch.ellipse = self.ellipse |
|
28
|
|
|
self.user_sketch.arc = self.arc |
|
29
|
|
|
|
|
30
|
|
|
self.user_sketch.arc = self.arc |
|
31
|
|
|
|
|
32
|
|
|
self.user_sketch.rotate = self.rotate |
|
33
|
|
|
self.user_sketch.translate = self.translate |
|
34
|
|
|
self.user_sketch.scale = self.scale |
|
35
|
|
|
self.user_sketch.save = self.save |
|
36
|
|
|
self.user_sketch.restore = self.restore |
|
37
|
|
|
|
|
38
|
|
|
self.user_sketch.reset_style = self.reset_style |
|
39
|
|
|
|
|
40
|
|
|
def _fill(self, unparsed_fill_color): |
|
41
|
|
|
if unparsed_fill_color != "": |
|
42
|
|
|
self.user_sketch.settings.fill_color = unparsed_fill_color |
|
43
|
|
|
|
|
44
|
|
|
fill_color = Color.from_user_input(self.user_sketch.settings.fill_color) |
|
45
|
|
|
self.context.set_source_rgba(*fill_color.rgba()) |
|
46
|
|
|
self.context.fill() |
|
47
|
|
|
|
|
48
|
|
|
def _stroke(self, unparsed_stroke_color, unparsed_stroke_width): |
|
49
|
|
|
if unparsed_stroke_color != "": |
|
50
|
|
|
self.user_sketch.settings.stroke_color = unparsed_stroke_color |
|
51
|
|
|
|
|
52
|
|
|
if unparsed_stroke_width >= 0: |
|
53
|
|
|
self.user_sketch.settings.stroke_width = unparsed_stroke_width |
|
54
|
|
|
|
|
55
|
|
|
stroke_color = Color.from_user_input(self.user_sketch.settings.stroke_color) |
|
56
|
|
|
stroke_width = self.user_sketch.settings.stroke_width |
|
57
|
|
|
|
|
58
|
|
|
self.context.set_line_width(stroke_width) |
|
59
|
|
|
self.context.set_source_rgba(*stroke_color.rgba()) |
|
60
|
|
|
self.context.stroke_preserve() |
|
61
|
|
|
|
|
62
|
|
|
def rotate(self, angle=0): |
|
63
|
|
|
self.context.rotate(angle) |
|
64
|
|
|
|
|
65
|
|
|
def translate(self, x=0, y=0): |
|
66
|
|
|
self.context.translate(x, y) |
|
67
|
|
|
|
|
68
|
|
|
def scale(self, factor=1): |
|
69
|
|
|
self.context.scale(factor) |
|
70
|
|
|
|
|
71
|
|
|
def save(self): |
|
72
|
|
|
self.context.save() |
|
73
|
|
|
|
|
74
|
|
|
def restore(self): |
|
75
|
|
|
self.context.restore() |
|
76
|
|
|
|
|
77
|
|
|
def reset_style(self): |
|
78
|
|
|
self.user_sketch.settings.fill_color = default_settings.fill_color |
|
79
|
|
|
self.user_sketch.settings.stroke_color = default_settings.stroke_color |
|
80
|
|
|
self.user_sketch.settings.stroke_width = default_settings.stroke_width |
|
81
|
|
|
|
|
82
|
|
|
def update_settings(self): |
|
83
|
|
|
self.surface_data = (ctypes.c_ubyte * (self.user_sketch.settings.width * self.user_sketch.settings.height * 4))() |
|
84
|
|
|
self.surface = cairo.ImageSurface.create_for_data(self.surface_data, |
|
85
|
|
|
cairo.FORMAT_ARGB32, |
|
86
|
|
|
self.user_sketch.settings.width, |
|
87
|
|
|
self.user_sketch.settings.height, |
|
88
|
|
|
self.user_sketch.settings.width * 4) |
|
89
|
|
|
self.context = cairo.Context(self.surface) |
|
90
|
|
|
self.texture = image.Texture.create_for_size(gl.GL_TEXTURE_2D, self.user_sketch.settings.width, self.user_sketch.settings.height, gl.GL_RGBA) |
|
91
|
|
|
|
|
92
|
|
|
def clear_screen(self): |
|
93
|
|
|
self.fill_screen("default_background_color") |
|
94
|
|
|
|
|
95
|
|
|
def clear(self): |
|
96
|
|
|
self.clear_screen() |
|
97
|
|
|
|
|
98
|
|
|
def fill_screen(self, color="default_background_color"): |
|
99
|
|
|
background_color = Color.from_user_input(color) |
|
100
|
|
|
self.context.save() |
|
101
|
|
|
self.context.scale(self.user_sketch.settings.width, self.user_sketch.settings.height) |
|
102
|
|
|
self.context.rectangle(0, 0, 1, 1) |
|
103
|
|
|
self.context.set_source_rgba(*background_color.rgba()) |
|
104
|
|
|
self.context.fill() |
|
105
|
|
|
self.context.restore() |
|
106
|
|
|
|
|
107
|
|
|
def rectangle(self, x, y, width, height, fill_color="", stroke_color="", stroke_width=-1): |
|
108
|
|
|
self.context.rectangle(x, y, width, height) |
|
109
|
|
|
self._stroke(stroke_color, stroke_width) |
|
110
|
|
|
self._fill(fill_color) |
|
111
|
|
|
|
|
112
|
|
|
def circle(self, x, y, radius, fill_color="", stroke_color="", stroke_width=-1): |
|
113
|
|
|
self.context.arc(x, y, radius, 0, TAU) |
|
114
|
|
|
self._stroke(stroke_color, stroke_width) |
|
115
|
|
|
self._fill(fill_color) |
|
116
|
|
|
|
|
117
|
|
|
def ellipse(self, x, y, width, height, fill_color="", stroke_color="", stroke_width=-1): |
|
118
|
|
|
ratio = height/width |
|
119
|
|
|
self.save() |
|
120
|
|
|
self.context.scale(1, ratio) |
|
121
|
|
|
self.context.arc(x, y/ratio, width, 0, TAU) |
|
122
|
|
|
self.restore() |
|
123
|
|
|
self._stroke(stroke_color, stroke_width) |
|
124
|
|
|
self._fill(fill_color) |
|
125
|
|
|
|
|
126
|
|
|
def arc(self, x, y, radius, start_angle, stop_angle, fill_color="", stroke_color="", stroke_width=-1): |
|
127
|
|
|
self.context.arc(x, y, radius, start_angle, stop_angle) |
|
128
|
|
|
self._stroke(stroke_color, stroke_width) |
|
129
|
|
|
self._fill(fill_color) |
|
130
|
|
|
|
Canvim /
PyPen
