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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
|
#------------------------------------------------------------------------------
#
# Copyright (c) 2009, Enthought, Inc.
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in enthought/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!
#
# Author: Evan Patterson
# Date: 08/11/2009
#
#------------------------------------------------------------------------------
""" Defines the various image enumeration editors for the PyQt user interface
toolkit.
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
from pyface.qt import QtCore, QtGui
# FIXME: ToolkitEditorFactory is a proxy class defined here just for backward
# compatibility. The class has been moved to the
# traitsui.editors.image_enum_editor file.
from traitsui.editors.image_enum_editor import ToolkitEditorFactory
from editor import Editor
from enum_editor import BaseEditor as BaseEnumEditor
from enum_editor import SimpleEditor as SimpleEnumEditor
from enum_editor import RadioEditor as CustomEnumEditor
from helper import pixmap_cache
#-------------------------------------------------------------------------------
# 'BaseImageEnumEditor' class:
#-------------------------------------------------------------------------------
class BaseEditor(object):
""" The base class for the different styles of ImageEnumEditor.
"""
def get_pixmap(self, name):
""" Get a pixmap representing a possible object traits value.
"""
if name is None:
return None
factory = self.factory
name = ''.join((factory.prefix, name, factory.suffix))
return pixmap_cache(name, factory._image_path)
#-------------------------------------------------------------------------------
# 'ReadonlyEditor' class:
#-------------------------------------------------------------------------------
class ReadonlyEditor(BaseEditor, BaseEnumEditor):
""" Read-only style of image enumeration editor, which displays a single
static image representing the object trait's value.
"""
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init(self, parent):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
self.control = QtGui.QLabel()
self.control.setPixmap(self.get_pixmap(self.str_value))
self.set_tooltip()
#---------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#---------------------------------------------------------------------------
def update_editor(self):
""" Updates the editor when the object trait changes externally to the
editor.
"""
self.control.setPixmap(self.get_pixmap(self.str_value))
#-------------------------------------------------------------------------------
# 'SimpleEditor' class:
#-------------------------------------------------------------------------------
class SimpleEditor(BaseEditor, SimpleEnumEditor):
""" Simple style of image enumeration editor, which displays a combo box.
"""
#---------------------------------------------------------------------------
# Returns the QComboBox used for the editor control:
#---------------------------------------------------------------------------
def create_combo_box(self):
""" Returns the QComboBox used for the editor control.
"""
control = ImageEnumComboBox(self)
control.setSizePolicy(QtGui.QSizePolicy.Maximum,
QtGui.QSizePolicy.Maximum)
return control
#---------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#---------------------------------------------------------------------------
def update_editor ( self ):
""" Updates the editor when the object trait changes externally to the
editor.
"""
if self._no_enum_update == 0:
self._no_enum_update += 1
try:
index = self.names.index(self.inverse_mapping[self.value])
except:
self.control.setCurrentIndex(-1)
else:
cols = self.factory.cols
rows = (len(self.names) + cols - 1) / cols
row, col = index / cols, index % cols
self.control.setModelColumn(col)
self.control.setCurrentIndex(row)
self._no_enum_update -= 1
#---------------------------------------------------------------------------
# Rebuilds the contents of the editor whenever the original factory
# object's 'values' trait changes:
#---------------------------------------------------------------------------
def rebuild_editor(self):
""" Rebuilds the contents of the editor whenever the original factory
object's **values** trait changes.
"""
self.control.model().reset()
#-------------------------------------------------------------------------------
# 'CustomEditor' class:
#-------------------------------------------------------------------------------
class CustomEditor(BaseEditor, CustomEnumEditor):
""" Simple style of image enumeration editor, which displays a combo box.
"""
# Is the button layout row-major or column-major? This value overrides the
# default.
row_major = True
#---------------------------------------------------------------------------
# Returns the QAbstractButton used for the radio button:
#---------------------------------------------------------------------------
def create_button(self, name):
""" Returns the QAbstractButton used for the radio button.
"""
button = QtGui.QToolButton()
button.setAutoExclusive(True)
button.setCheckable(True)
pixmap = self.get_pixmap(name)
button.setIcon(QtGui.QIcon(pixmap))
button.setIconSize(pixmap.size())
return button
#-------------------------------------------------------------------------------
# Custom Qt objects used in the SimpleEditor:
#-------------------------------------------------------------------------------
class ImageEnumComboBox(QtGui.QComboBox):
""" A combo box which displays images instead of text.
"""
def __init__(self, editor, parent=None):
""" Reimplemented to store the editor and set a delegate for drawing the
items in the popup menu. If there is more than one column, use a
TableView instead of ListView for the popup.
"""
QtGui.QComboBox.__init__(self, parent)
self._editor = editor
model = ImageEnumModel(editor, self)
self.setModel(model)
delegate = ImageEnumItemDelegate(editor, self)
if editor.factory.cols > 1:
view = ImageEnumTablePopupView(self)
view.setItemDelegate(delegate)
self.setView(view)
# Unless we force it, the popup for a combo box will not be wider
# than the box itself, so we set a high minimum width.
width = 0
for col in xrange(self._editor.factory.cols):
width += view.sizeHintForColumn(col)
view.setMinimumWidth(width)
else:
self.setItemDelegate(delegate)
def paintEvent(self, event):
""" Reimplemented to draw the ComboBox frame and paint the image
centered in it.
"""
painter = QtGui.QStylePainter(self)
painter.setPen(self.palette().color(QtGui.QPalette.Text))
option = QtGui.QStyleOptionComboBox()
self.initStyleOption(option)
painter.drawComplexControl(QtGui.QStyle.CC_ComboBox, option)
editor = self._editor
pixmap = editor.get_pixmap(editor.inverse_mapping[editor.value])
arrow = self.style().subControlRect(QtGui.QStyle.CC_ComboBox, option,
QtGui.QStyle.SC_ComboBoxArrow, None)
option.rect.setWidth(option.rect.width() - arrow.width())
target = QtGui.QStyle.alignedRect(QtCore.Qt.LeftToRight,
QtCore.Qt.AlignCenter,
pixmap.size(), option.rect)
painter.drawPixmap(target, pixmap)
def sizeHint(self):
""" Reimplemented to set a size hint based on the size of the larget
image.
"""
size = QtCore.QSize()
for name in self._editor.names:
size = size.expandedTo(self._editor.get_pixmap(name).size())
option = QtGui.QStyleOptionComboBox()
self.initStyleOption(option)
size = self.style().sizeFromContents(QtGui.QStyle.CT_ComboBox, option,
size, self)
return size
class ImageEnumTablePopupView(QtGui.QTableView):
def __init__(self, parent):
""" Configure the appearence of the table view.
"""
QtGui.QTableView.__init__(self, parent)
hheader = self.horizontalHeader()
hheader.setResizeMode(QtGui.QHeaderView.ResizeToContents)
hheader.hide()
vheader = self.verticalHeader()
vheader.setResizeMode(QtGui.QHeaderView.ResizeToContents)
vheader.hide()
self.setShowGrid(False)
class ImageEnumItemDelegate(QtGui.QStyledItemDelegate):
""" An item delegate which draws only images.
"""
def __init__(self, editor, parent):
""" Reimplemented to store the editor.
"""
QtGui.QStyledItemDelegate.__init__(self, parent)
self._editor = editor
def displayText(self, value, locale):
""" Reimplemented to display nothing.
"""
return ''
def paint(self, painter, option, mi):
""" Reimplemented to draw images.
"""
# Delegate to our superclass to draw the background
QtGui.QStyledItemDelegate.paint(self, painter, option, mi)
# Now draw the pixmap
name = mi.data(QtCore.Qt.DisplayRole)
pixmap = self._get_pixmap(name)
if pixmap is not None:
target = QtGui.QStyle.alignedRect(QtCore.Qt.LeftToRight,
QtCore.Qt.AlignCenter,
pixmap.size(), option.rect)
painter.drawPixmap(target, pixmap)
def sizeHint(self, option, mi):
""" Reimplemented to define a size hint based on the size of the pixmap.
"""
name = mi.data(QtCore.Qt.DisplayRole)
pixmap = self._get_pixmap(name)
if pixmap is None:
return QtCore.QSize()
return pixmap.size()
def _get_pixmap(self, name):
return self._editor.get_pixmap(name)
class ImageEnumModel(QtCore.QAbstractTableModel):
""" A table model for use with the 'simple' style ImageEnumEditor.
"""
def __init__(self, editor, parent):
""" Reimplemented to store the editor.
"""
super(ImageEnumModel, self).__init__(parent)
self._editor = editor
def rowCount(self, mi):
""" Reimplemented to return the number of rows.
"""
cols = self._editor.factory.cols
result = (len(self._editor.names) + cols - 1) / cols
return result
def columnCount(self, mi):
""" Reimplemented to return the number of columns.
"""
return self._editor.factory.cols
def data(self, mi, role):
""" Reimplemented to return the data.
"""
if role == QtCore.Qt.DisplayRole:
index = mi.row() * self._editor.factory.cols + mi.column()
if index < len(self._editor.names):
return self._editor.names[index]
return None
|
