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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
# (C) Copyright 2005-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
""" A renderer which will display a cell-specific image in addition to some
text displayed in the same way the standard string renderer normally
would. """
import wx
from wx.grid import GridCellRenderer
from wx.grid import GridCellStringRenderer
from wx import SOLID, Brush, Rect, TRANSPARENT_PEN
class GridCellImageRenderer(GridCellRenderer):
""" A renderer which will display a cell-specific image in addition to some
text displayed in the same way the standard string renderer normally
would. """
def __init__(self, provider=None):
""" Build a new PyGridCellImageRenderer.
'provider', if provided, should implement
get_image_for_cell(row, col) to specify an image to appear
in the cell at row, col. """
GridCellRenderer.__init__(self)
# save the string renderer to use for text.
self._string_renderer = GridCellStringRenderer()
self._provider = provider
return
# ------------------------------------------------------------------------
# GridCellRenderer interface.
# ------------------------------------------------------------------------
def Draw(self, grid, attr, dc, rect, row, col, isSelected):
""" Draw the appropriate icon into the specified grid cell. """
# clear the cell first
if isSelected:
bgcolor = grid.GetSelectionBackground()
else:
bgcolor = grid.GetCellBackgroundColour(row, col)
dc.SetBackgroundMode(SOLID)
dc.SetBrush(Brush(bgcolor, SOLID))
dc.SetPen(TRANSPARENT_PEN)
dc.DrawRectangle(rect.x, rect.y, rect.width, rect.height)
# find the correct image for this cell
bmp = self._get_image(grid, row, col)
# find the correct text for this cell
text = self._get_text(grid, row, col)
# figure out placement -- we try to center things!
# fixme: we should be responding to the horizontal/vertical
# alignment info in the attr object!
size = self.GetBestSize(grid, attr, dc, row, col)
halign, valign = attr.GetAlignment()
# width first
wdelta = rect.width - size.GetWidth()
x = rect.x
if halign == wx.ALIGN_CENTRE and wdelta > 0:
x += wdelta / 2
# now height
hdelta = rect.height - size.GetHeight()
y = rect.y
if valign == wx.ALIGN_CENTRE and hdelta > 0:
y += hdelta / 2
dc.SetClippingRegion(*rect)
if bmp is not None:
# now draw our image into it
dc.DrawBitmap(bmp, x, y, 1)
x += bmp.GetWidth()
if text is not None and text != "":
width = rect.x + rect.width - x
height = rect.y + rect.height - y
# draw any text that should be included
new_rect = Rect(x, y, width, height)
self._string_renderer.Draw(
grid, attr, dc, new_rect, row, col, isSelected
)
dc.DestroyClippingRegion()
def GetBestSize(self, grid, attr, dc, row, col):
""" Determine best size for the cell. """
# find the correct image
bmp = self._get_image(grid, row, col)
if bmp is not None:
bmp_size = wx.Size(bmp.GetWidth(), bmp.GetHeight())
else:
bmp_size = wx.Size(0, 0)
# find the correct text for this cell
text = self._get_text(grid, row, col)
if text is not None:
text_size = self._string_renderer.GetBestSize(
grid, attr, dc, row, col
)
else:
text_size = wx.Size(0, 0)
result = wx.Size(
bmp_size.width + text_size.width,
max(bmp_size.height, text_size.height),
)
return result
def Clone(self):
return GridCellImageRenderer(self._provider)
# ------------------------------------------------------------------------
# protected 'GridCellIconRenderer' interface.
# ------------------------------------------------------------------------
def _get_image(self, grid, row, col):
""" Returns the correct bmp for the data at row, col. """
bmp = None
if self._provider is not None and hasattr(
self._provider, "get_image_for_cell"
):
# get the image from the specified provider
img = self._provider.get_image_for_cell(grid, row, col)
if img is not None:
bmp = img.create_bitmap()
else:
bmp = None
return bmp
def _get_text(self, grid, row, col):
""" Returns the correct text for the data at row, col. """
text = None
if self._provider is not None and hasattr(
self._provider, "get_text_for_cell"
):
# get the image from the specified provider
text = self._provider.get_text_for_cell(grid, row, col)
else:
text = grid.GetCellValue(row, col)
return text
|
