4 from __future__ import with_statement
11 from PyQt4 import QtGui
12 from PyQt4 import QtCore
15 from util import misc as misc_utils
19 _moduleLogger = logging.getLogger("gonvert_glade")
22 def change_menu_label(widgets, labelname, newtext):
23 item_label = widgets.get_widget(labelname).get_children()[0]
24 item_label.set_text(newtext)
27 def split_number(number):
29 fractional, integer = math.modf(number)
31 integerDisplay = number
32 fractionalDisplay = ""
34 integerDisplay = str(integer)
35 fractionalDisplay = str(fractional)
36 if "e+" in integerDisplay:
37 integerDisplay = number
38 fractionalDisplay = ""
39 elif "e-" in fractionalDisplay and 0.0 < integer:
40 integerDisplay = number
41 fractionalDisplay = ""
42 elif "e-" in fractionalDisplay:
44 fractionalDisplay = number
46 integerDisplay = integerDisplay.split(".", 1)[0] + "."
47 fractionalDisplay = fractionalDisplay.rsplit(".", 1)[-1]
49 return integerDisplay, fractionalDisplay
52 class Gonvert(object):
54 # @todo Remember last selection
57 # @todo Fullscreen support (showFullscreen, showNormal)
58 # @todo Close Window / Quit keyboard shortcuts
59 # @todo Ctrl+l support
60 # @todo Unit conversion window: focus always on input, arrows switch units
63 os.path.dirname(__file__),
64 os.path.join(os.path.dirname(__file__), "../data"),
65 os.path.join(os.path.dirname(__file__), "../lib"),
72 for dataPath in self._DATA_PATHS:
73 appIconPath = os.path.join(dataPath, "pixmaps", "gonvert.png")
74 if os.path.isfile(appIconPath):
75 self._dataPath = dataPath
78 raise RuntimeError("UI Descriptor not found!")
79 self._appIconPath = appIconPath
81 self._jumpWindow = None
82 self._catWindow = None
84 self._jumpAction = QtGui.QAction(None)
85 self._jumpAction.setText("Quick Jump")
86 self._jumpAction.setStatusTip("Search for a unit and jump straight to it")
87 self._jumpAction.setToolTip("Search for a unit and jump straight to it")
88 self._jumpAction.setShortcut(QtGui.QKeySequence("CTRL+j"))
89 self._jumpAction.triggered.connect(self._on_jump_start)
91 self.request_category()
93 def request_category(self):
94 if self._catWindow is not None:
95 self._catWindow.close()
96 self._catWindow = None
97 self._catWindow = CategoryWindow(None, self)
98 return self._catWindow
100 def search_units(self):
101 if self._jumpWindow is not None:
102 self._jumpWindow.close()
103 self._jumpWindow = None
104 self._jumpWindow = QuickJump(None, self)
105 return self._jumpWindow
108 def appIconPath(self):
109 return self._appIconPath
112 def jumpAction(self):
113 return self._jumpAction
115 @misc_utils.log_exception(_moduleLogger)
116 def _on_jump_start(self, checked = False):
120 class CategoryWindow(object):
122 def __init__(self, parent, app):
124 self._unitWindow = None
126 self._categories = QtGui.QTreeWidget()
127 self._categories.setHeaderLabels(["Categories"])
128 self._categories.itemClicked.connect(self._on_category_clicked)
129 self._categories.setHeaderHidden(True)
130 self._categories.setAlternatingRowColors(True)
131 for catName in unit_data.UNIT_CATEGORIES:
132 twi = QtGui.QTreeWidgetItem(self._categories)
133 twi.setText(0, catName)
135 self._layout = QtGui.QVBoxLayout()
136 self._layout.addWidget(self._categories)
138 centralWidget = QtGui.QWidget()
139 centralWidget.setLayout(self._layout)
141 self._window = QtGui.QMainWindow(parent)
142 if parent is not None:
143 self._window.setWindowModality(QtCore.Qt.WindowModal)
144 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
145 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
146 self._window.setCentralWidget(centralWidget)
148 viewMenu = self._window.menuBar().addMenu("&View")
149 viewMenu.addAction(self._app.jumpAction)
154 if self._unitWindow is not None:
155 self._unitWindow.close()
156 self._unitWindow = None
159 def selectCategory(self, categoryName):
160 if self._unitWindow is not None:
161 self._unitWindow.close()
162 self._unitWindow = None
163 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
164 return self._unitWindow
166 @misc_utils.log_exception(_moduleLogger)
167 def _on_category_clicked(self, item, columnIndex):
168 categoryName = unicode(item.text(0))
169 self.selectCategory(categoryName)
172 class QuickJump(object):
176 def __init__(self, parent, app):
179 self._searchLabel = QtGui.QLabel("Search:")
180 self._searchEntry = QtGui.QLineEdit("")
181 self._searchEntry.textEdited.connect(self._on_search_edited)
183 self._entryLayout = QtGui.QHBoxLayout()
184 self._entryLayout.addWidget(self._searchLabel)
185 self._entryLayout.addWidget(self._searchEntry)
187 self._resultsBox = QtGui.QTreeWidget()
188 self._resultsBox.setHeaderLabels(["Categories", "Units"])
189 self._resultsBox.setHeaderHidden(True)
190 self._resultsBox.setAlternatingRowColors(True)
191 self._resultsBox.itemClicked.connect(self._on_result_clicked)
193 self._layout = QtGui.QVBoxLayout()
194 self._layout.addLayout(self._entryLayout)
195 self._layout.addWidget(self._resultsBox)
197 centralWidget = QtGui.QWidget()
198 centralWidget.setLayout(self._layout)
200 self._window = QtGui.QMainWindow(parent)
201 if parent is not None:
202 self._window.setWindowModality(QtCore.Qt.WindowModal)
203 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
204 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
205 self._window.setCentralWidget(centralWidget)
212 @misc_utils.log_exception(_moduleLogger)
213 def _on_result_clicked(self, item, columnIndex):
214 categoryName = unicode(item.text(0))
215 unitName = unicode(item.text(1))
216 catWindow = self._app.request_category()
217 unitsWindow = catWindow.selectCategory(categoryName)
218 unitsWindow.select_unit(unitName)
221 @misc_utils.log_exception(_moduleLogger)
222 def _on_search_edited(self, *args):
223 userInput = self._searchEntry.text()
224 if len(userInput) < self.MINIMAL_ENTRY:
227 self._resultsBox.clear()
228 lowerInput = str(userInput).lower()
229 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
230 units = unit_data.get_units(category)
231 for unitIndex, unit in enumerate(units):
232 loweredUnit = unit.lower()
233 if lowerInput in loweredUnit:
234 twi = QtGui.QTreeWidgetItem(self._resultsBox)
235 twi.setText(0, category)
239 class UnitData(object):
241 HEADERS = ["Name", "Value", "", "Unit"]
242 ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
244 def __init__(self, name, unit, description, conversion):
247 self._description = description
248 self._conversion = conversion
251 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
261 def update_value(self, newValue):
262 self._value = newValue
263 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
270 def conversion(self):
271 return self._conversion
273 def data(self, column):
275 return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
280 class UnitModel(QtCore.QAbstractItemModel):
282 def __init__(self, categoryName, parent=None):
283 super(UnitModel, self).__init__(parent)
284 self._categoryName = categoryName
285 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
288 for key in unit_data.get_units(self._categoryName):
289 conversion, unit, description = self._unitData[key]
290 self._children.append(UnitData(key, unit, description, conversion))
292 @misc_utils.log_exception(_moduleLogger)
293 def columnCount(self, parent):
297 return len(UnitData.HEADERS)
299 @misc_utils.log_exception(_moduleLogger)
300 def data(self, index, role):
301 if not index.isValid():
303 elif role == QtCore.Qt.TextAlignmentRole:
304 return UnitData.ALIGNMENT[index.column()]
305 elif role != QtCore.Qt.DisplayRole:
308 item = index.internalPointer()
309 if isinstance(item, UnitData):
310 return item.data(index.column())
311 elif item is UnitData.HEADERS:
312 return item[index.column()]
314 @misc_utils.log_exception(_moduleLogger)
315 def sort(self, column, order = QtCore.Qt.AscendingOrder):
316 isReverse = order == QtCore.Qt.AscendingOrder
318 key_func = lambda item: item.name
319 elif column in [1, 2]:
320 key_func = lambda item: item.value
322 key_func = lambda item: item.unit
323 self._children.sort(key=key_func, reverse = isReverse)
327 @misc_utils.log_exception(_moduleLogger)
328 def flags(self, index):
329 if not index.isValid():
330 return QtCore.Qt.NoItemFlags
332 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
334 @misc_utils.log_exception(_moduleLogger)
335 def headerData(self, section, orientation, role):
336 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
337 return UnitData.HEADERS[section]
341 @misc_utils.log_exception(_moduleLogger)
342 def index(self, row, column, parent):
343 if not self.hasIndex(row, column, parent):
344 return QtCore.QModelIndex()
347 return QtCore.QModelIndex()
349 parentItem = UnitData.HEADERS
350 childItem = self._children[row]
352 return self.createIndex(row, column, childItem)
354 return QtCore.QModelIndex()
356 @misc_utils.log_exception(_moduleLogger)
357 def parent(self, index):
358 if not index.isValid():
359 return QtCore.QModelIndex()
361 childItem = index.internalPointer()
362 if isinstance(childItem, UnitData):
363 return QtCore.QModelIndex()
364 elif childItem is UnitData.HEADERS:
367 @misc_utils.log_exception(_moduleLogger)
368 def rowCount(self, parent):
369 if 0 < parent.column():
372 if not parent.isValid():
373 return len(self._children)
375 return len(self._children)
377 def get_unit(self, index):
378 return self._children[index]
380 def index_unit(self, unitName):
381 for i, child in enumerate(self._children):
382 if child.name == unitName:
385 raise RuntimeError("Unit not found")
387 def update_values(self, fromIndex, userInput):
388 value = self._sanitize_value(userInput)
389 func, arg = self._children[fromIndex].conversion
390 base = func.to_base(value, arg)
391 for i, child in enumerate(self._children):
394 func, arg = child.conversion
395 newValue = func.from_base(base, arg)
396 child.update_value(newValue)
400 def _all_changed(self):
401 topLeft = self.createIndex(0, 1, self._children[0])
402 bottomRight = self.createIndex(len(self._children)-1, 2, self._children[-1])
403 self.dataChanged.emit(topLeft, bottomRight)
405 def _sanitize_value(self, userEntry):
406 if self._categoryName == "Computer Numbers":
415 value = float(userEntry)
419 class UnitWindow(object):
421 def __init__(self, parent, category, app):
423 self._categoryName = category
424 self._selectedIndex = 0
426 self._selectedUnitName = QtGui.QLabel()
427 self._selectedUnitValue = QtGui.QLineEdit()
428 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
429 self._selectedUnitSymbol = QtGui.QLabel()
431 self._selectedUnitLayout = QtGui.QHBoxLayout()
432 self._selectedUnitLayout.addWidget(self._selectedUnitName)
433 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
434 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
436 self._unitsModel = UnitModel(self._categoryName)
437 self._unitsView = QtGui.QTreeView()
438 self._unitsView.setModel(self._unitsModel)
439 self._unitsView.clicked.connect(self._on_unit_clicked)
440 self._unitsView.setUniformRowHeights(True)
441 self._unitsView.header().setSortIndicatorShown(True)
442 self._unitsView.header().setClickable(True)
443 self._unitsView.setSortingEnabled(True)
444 self._unitsView.setAlternatingRowColors(True)
446 self._unitsView.setHeaderHidden(True)
448 self._layout = QtGui.QVBoxLayout()
449 self._layout.addLayout(self._selectedUnitLayout)
450 self._layout.addWidget(self._unitsView)
452 centralWidget = QtGui.QWidget()
453 centralWidget.setLayout(self._layout)
455 self._window = QtGui.QMainWindow(parent)
456 if parent is not None:
457 self._window.setWindowModality(QtCore.Qt.WindowModal)
458 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
459 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
460 self._window.setCentralWidget(centralWidget)
463 self._unitsModel.sort(1)
465 self._sortActionGroup = QtGui.QActionGroup(None)
466 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
467 self._sortByNameAction.setText("Sort By Name")
468 self._sortByNameAction.setStatusTip("Sort the units by name")
469 self._sortByNameAction.setToolTip("Sort the units by name")
470 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
471 self._sortByValueAction.setText("Sort By Value")
472 self._sortByValueAction.setStatusTip("Sort the units by value")
473 self._sortByValueAction.setToolTip("Sort the units by value")
474 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
475 self._sortByUnitAction.setText("Sort By Unit")
476 self._sortByUnitAction.setStatusTip("Sort the units by unit")
477 self._sortByUnitAction.setToolTip("Sort the units by unit")
479 self._sortByValueAction.setChecked(True)
481 viewMenu = self._window.menuBar().addMenu("&View")
482 viewMenu.addAction(self._app.jumpAction)
483 viewMenu.addSeparator()
484 viewMenu.addAction(self._sortByNameAction)
485 viewMenu.addAction(self._sortByValueAction)
486 viewMenu.addAction(self._sortByUnitAction)
488 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
489 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
490 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
497 def select_unit(self, unitName):
498 index = self._unitsModel.index_unit(unitName)
499 self._select_unit(index)
501 @misc_utils.log_exception(_moduleLogger)
502 def _on_sort_by_name(self, checked = False):
503 self._unitsModel.sort(0, QtCore.Qt.DescendingOrder)
505 @misc_utils.log_exception(_moduleLogger)
506 def _on_sort_by_value(self, checked = False):
507 self._unitsModel.sort(1)
509 @misc_utils.log_exception(_moduleLogger)
510 def _on_sort_by_unit(self, checked = False):
511 self._unitsModel.sort(3, QtCore.Qt.DescendingOrder)
513 @misc_utils.log_exception(_moduleLogger)
514 def _on_unit_clicked(self, index):
515 self._select_unit(index.row())
517 @misc_utils.log_exception(_moduleLogger)
518 def _on_value_edited(self, *args):
519 userInput = self._selectedUnitValue.text()
520 self._unitsModel.update_values(self._selectedIndex, str(userInput))
522 def _select_unit(self, index):
523 unit = self._unitsModel.get_unit(index)
524 self._selectedUnitName.setText(unit.name)
525 self._selectedUnitValue.setText(str(unit.value))
526 self._selectedUnitSymbol.setText(unit.unit)
528 self._selectedIndex = index
529 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
530 self._unitsView.scrollTo(qindex)
534 app = QtGui.QApplication([])
539 if __name__ == "__main__":
540 logging.basicConfig(level = logging.DEBUG)
542 os.makedirs(constants._data_path_)