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"))
90 self.request_category()
92 def request_category(self):
93 if self._catWindow is not None:
94 self._catWindow.close()
95 self._catWindow = None
96 self._catWindow = CategoryWindow(None, self)
97 return self._catWindow
99 def search_units(self):
100 if self._jumpWindow is not None:
101 self._jumpWindow.close()
102 self._jumpWindow = None
103 self._jumpWindow = QuickJump(None, self)
104 return self._jumpWindow
107 def appIconPath(self):
108 return self._appIconPath
111 def jumpAction(self):
112 return self._jumpAction
115 class CategoryWindow(object):
117 def __init__(self, parent, app):
119 self._unitWindow = None
121 self._categories = QtGui.QTreeWidget()
122 self._categories.setHeaderLabels(["Categories"])
123 self._categories.itemClicked.connect(self._on_category_clicked)
124 self._categories.setHeaderHidden(True)
125 for catName in unit_data.UNIT_CATEGORIES:
126 twi = QtGui.QTreeWidgetItem(self._categories)
127 twi.setText(0, catName)
129 self._layout = QtGui.QVBoxLayout()
130 self._layout.addWidget(self._categories)
132 centralWidget = QtGui.QWidget()
133 centralWidget.setLayout(self._layout)
135 self._window = QtGui.QMainWindow(parent)
136 if parent is not None:
137 self._window.setWindowModality(QtCore.Qt.WindowModal)
138 self._window.setWindowTitle("%s - Categories" % constants.__pretty_app_name__)
139 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
140 self._window.setCentralWidget(centralWidget)
142 viewMenu = self._window.menuBar().addMenu("&View")
143 viewMenu.addAction(self._app.jumpAction)
145 self._app.jumpAction.triggered.connect(self._on_jump_start)
152 def selectCategory(self, categoryName):
153 if self._unitWindow is not None:
154 self._unitWindow.close()
155 self._unitWindow = None
156 self._unitWindow = UnitWindow(self._window, categoryName, self._app)
157 return self._unitWindow
159 @misc_utils.log_exception(_moduleLogger)
160 def _on_jump_start(self, checked = False):
161 self._app.search_units()
163 @misc_utils.log_exception(_moduleLogger)
164 def _on_category_clicked(self, item, columnIndex):
165 categoryName = unicode(item.text(0))
166 self.selectCategory(categoryName)
169 class QuickJump(object):
173 def __init__(self, parent, app):
176 self._searchLabel = QtGui.QLabel("Search:")
177 self._searchEntry = QtGui.QLineEdit("")
178 self._searchEntry.textEdited.connect(self._on_search_edited)
180 self._entryLayout = QtGui.QHBoxLayout()
181 self._entryLayout.addWidget(self._searchLabel)
182 self._entryLayout.addWidget(self._searchEntry)
184 self._resultsBox = QtGui.QTreeWidget()
185 self._resultsBox.setHeaderLabels(["Categories", "Units"])
186 self._resultsBox.setHeaderHidden(True)
187 self._resultsBox.itemClicked.connect(self._on_result_clicked)
189 self._layout = QtGui.QVBoxLayout()
190 self._layout.addLayout(self._entryLayout)
191 self._layout.addWidget(self._resultsBox)
193 centralWidget = QtGui.QWidget()
194 centralWidget.setLayout(self._layout)
196 self._window = QtGui.QMainWindow(parent)
197 if parent is not None:
198 self._window.setWindowModality(QtCore.Qt.WindowModal)
199 self._window.setWindowTitle("%s - Quick Jump" % constants.__pretty_app_name__)
200 self._window.setWindowIcon(QtGui.QIcon(self._app.appIconPath))
201 self._window.setCentralWidget(centralWidget)
208 @misc_utils.log_exception(_moduleLogger)
209 def _on_result_clicked(self, item, columnIndex):
210 categoryName = unicode(item.text(0))
211 unitName = unicode(item.text(1))
212 catWindow = self._app.request_category()
213 unitsWindow = catWindow.selectCategory(categoryName)
214 unitsWindow.select_unit(unitName)
216 @misc_utils.log_exception(_moduleLogger)
217 def _on_search_edited(self, *args):
218 userInput = self._searchEntry.text()
219 if len(userInput) < self.MINIMAL_ENTRY:
222 lowerInput = str(userInput).lower()
223 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
224 units = unit_data.get_units(category)
225 for unitIndex, unit in enumerate(units):
226 loweredUnit = unit.lower()
227 if lowerInput in loweredUnit:
228 twi = QtGui.QTreeWidgetItem(self._resultsBox)
229 twi.setText(0, category)
233 class UnitData(object):
235 HEADERS = ["Name", "Value", "", "Unit"]
236 ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
238 def __init__(self, name, unit, description, conversion):
241 self._description = description
242 self._conversion = conversion
245 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
255 def update_value(self, newValue):
256 self._value = newValue
257 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
264 def conversion(self):
265 return self._conversion
267 def data(self, column):
269 return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
274 class UnitModel(QtCore.QAbstractItemModel):
276 def __init__(self, categoryName, parent=None):
277 super(UnitModel, self).__init__(parent)
278 self._categoryName = categoryName
279 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
282 for key in unit_data.get_units(self._categoryName):
283 conversion, unit, description = self._unitData[key]
284 self._children.append(UnitData(key, unit, description, conversion))
286 @misc_utils.log_exception(_moduleLogger)
287 def columnCount(self, parent):
291 return len(UnitData.HEADERS)
293 @misc_utils.log_exception(_moduleLogger)
294 def data(self, index, role):
295 if not index.isValid():
297 elif role == QtCore.Qt.TextAlignmentRole:
298 return UnitData.ALIGNMENT[index.column()]
299 elif role != QtCore.Qt.DisplayRole:
302 item = index.internalPointer()
303 if isinstance(item, UnitData):
304 return item.data(index.column())
305 elif item is UnitData.HEADERS:
306 return item[index.column()]
308 @misc_utils.log_exception(_moduleLogger)
309 def sort(self, column, order = QtCore.Qt.AscendingOrder):
310 isReverse = order == QtCore.Qt.AscendingOrder
312 key_func = lambda item: item.name
313 elif column in [1, 2]:
314 key_func = lambda item: item.value
316 key_func = lambda item: item.unit
317 self._children.sort(key=key_func, reverse = isReverse)
321 @misc_utils.log_exception(_moduleLogger)
322 def flags(self, index):
323 if not index.isValid():
324 return QtCore.Qt.NoItemFlags
326 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
328 @misc_utils.log_exception(_moduleLogger)
329 def headerData(self, section, orientation, role):
330 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
331 return UnitData.HEADERS[section]
335 @misc_utils.log_exception(_moduleLogger)
336 def index(self, row, column, parent):
337 if not self.hasIndex(row, column, parent):
338 return QtCore.QModelIndex()
341 return QtCore.QModelIndex()
343 parentItem = UnitData.HEADERS
344 childItem = self._children[row]
346 return self.createIndex(row, column, childItem)
348 return QtCore.QModelIndex()
350 @misc_utils.log_exception(_moduleLogger)
351 def parent(self, index):
352 if not index.isValid():
353 return QtCore.QModelIndex()
355 childItem = index.internalPointer()
356 if isinstance(childItem, UnitData):
357 return QtCore.QModelIndex()
358 elif childItem is UnitData.HEADERS:
361 @misc_utils.log_exception(_moduleLogger)
362 def rowCount(self, parent):
363 if 0 < parent.column():
366 if not parent.isValid():
367 return len(self._children)
369 return len(self._children)
371 def get_unit(self, index):
372 return self._children[index]
374 def index_unit(self, unitName):
375 for i, child in enumerate(self._children):
376 if child.name == unitName:
379 raise RuntimeError("Unit not found")
381 def update_values(self, fromIndex, userInput):
382 value = self._sanitize_value(userInput)
383 func, arg = self._children[fromIndex].conversion
384 base = func.to_base(value, arg)
385 for i, child in enumerate(self._children):
388 func, arg = child.conversion
389 newValue = func.from_base(base, arg)
390 child.update_value(newValue)
394 def _all_changed(self):
395 topLeft = self.createIndex(0, 1, self._children[0])
396 bottomRight = self.createIndex(len(self._children)-1, 2, self._children[-1])
397 self.dataChanged.emit(topLeft, bottomRight)
399 def _sanitize_value(self, userEntry):
400 if self._categoryName == "Computer Numbers":
409 value = float(userEntry)
413 class UnitWindow(object):
415 def __init__(self, parent, category, app):
417 self._categoryName = category
418 self._selectedIndex = 0
420 self._selectedUnitName = QtGui.QLabel()
421 self._selectedUnitValue = QtGui.QLineEdit()
422 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
423 self._selectedUnitSymbol = QtGui.QLabel()
425 self._selectedUnitLayout = QtGui.QHBoxLayout()
426 self._selectedUnitLayout.addWidget(self._selectedUnitName)
427 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
428 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
430 self._unitsModel = UnitModel(self._categoryName)
431 self._unitsView = QtGui.QTreeView()
432 self._unitsView.setModel(self._unitsModel)
433 self._unitsView.clicked.connect(self._on_unit_clicked)
434 self._unitsView.setUniformRowHeights(True)
435 self._unitsView.header().setSortIndicatorShown(True)
436 self._unitsView.header().setClickable(True)
437 self._unitsView.setSortingEnabled(True)
439 self._unitsView.setHeaderHidden(True)
441 self._layout = QtGui.QVBoxLayout()
442 self._layout.addLayout(self._selectedUnitLayout)
443 self._layout.addWidget(self._unitsView)
445 centralWidget = QtGui.QWidget()
446 centralWidget.setLayout(self._layout)
448 self._window = QtGui.QMainWindow(parent)
449 if parent is not None:
450 self._window.setWindowModality(QtCore.Qt.WindowModal)
451 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
452 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
453 self._window.setCentralWidget(centralWidget)
457 self._sortActionGroup = QtGui.QActionGroup(None)
458 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
459 self._sortByNameAction.setText("Sort By Name")
460 self._sortByNameAction.setStatusTip("Sort the units by name")
461 self._sortByNameAction.setToolTip("Sort the units by name")
462 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
463 self._sortByValueAction.setText("Sort By Value")
464 self._sortByValueAction.setStatusTip("Sort the units by value")
465 self._sortByValueAction.setToolTip("Sort the units by value")
466 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
467 self._sortByUnitAction.setText("Sort By Unit")
468 self._sortByUnitAction.setStatusTip("Sort the units by unit")
469 self._sortByUnitAction.setToolTip("Sort the units by unit")
471 viewMenu = self._window.menuBar().addMenu("&View")
472 viewMenu.addAction(self._app.jumpAction)
473 viewMenu.addSeparator()
474 viewMenu.addAction(self._sortByNameAction)
475 viewMenu.addAction(self._sortByValueAction)
476 viewMenu.addAction(self._sortByUnitAction)
478 self._app.jumpAction.triggered.connect(self._on_jump_start)
479 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
480 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
481 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
488 def select_unit(self, unitName):
489 index = self._unitsModel.index_unit(unitName)
490 self._select_unit(index)
492 @misc_utils.log_exception(_moduleLogger)
493 def _on_sort_by_name(self, checked = False):
494 self._unitsModel.sort(0, QtCore.Qt.DescendingOrder)
496 @misc_utils.log_exception(_moduleLogger)
497 def _on_sort_by_value(self, checked = False):
498 self._unitsModel.sort(1)
500 @misc_utils.log_exception(_moduleLogger)
501 def _on_sort_by_unit(self, checked = False):
502 self._unitsModel.sort(3, QtCore.Qt.DescendingOrder)
504 @misc_utils.log_exception(_moduleLogger)
505 def _on_jump_start(self, checked = False):
506 self._app.search_units()
508 @misc_utils.log_exception(_moduleLogger)
509 def _on_unit_clicked(self, index):
510 self._select_unit(index.row())
512 @misc_utils.log_exception(_moduleLogger)
513 def _on_value_edited(self, *args):
514 userInput = self._selectedUnitValue.text()
515 self._unitsModel.update_values(self._selectedIndex, str(userInput))
517 def _select_unit(self, index):
518 unit = self._unitsModel.get_unit(index)
519 self._selectedUnitName.setText(unit.name)
520 self._selectedUnitValue.setText(str(unit.value))
521 self._selectedUnitSymbol.setText(unit.unit)
523 self._selectedIndex = index
524 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
525 self._unitsView.scrollTo(qindex)
529 app = QtGui.QApplication([])
534 if __name__ == "__main__":
535 logging.basicConfig(level = logging.DEBUG)
537 os.makedirs(constants._data_path_)