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)
220 @misc_utils.log_exception(_moduleLogger)
221 def _on_search_edited(self, *args):
222 userInput = self._searchEntry.text()
223 if len(userInput) < self.MINIMAL_ENTRY:
226 lowerInput = str(userInput).lower()
227 for catIndex, category in enumerate(unit_data.UNIT_CATEGORIES):
228 units = unit_data.get_units(category)
229 for unitIndex, unit in enumerate(units):
230 loweredUnit = unit.lower()
231 if lowerInput in loweredUnit:
232 twi = QtGui.QTreeWidgetItem(self._resultsBox)
233 twi.setText(0, category)
237 class UnitData(object):
239 HEADERS = ["Name", "Value", "", "Unit"]
240 ALIGNMENT = [QtCore.Qt.AlignLeft, QtCore.Qt.AlignRight, QtCore.Qt.AlignLeft, QtCore.Qt.AlignLeft]
242 def __init__(self, name, unit, description, conversion):
245 self._description = description
246 self._conversion = conversion
249 self._integerDisplay, self._fractionalDisplay = split_number(self._value)
259 def update_value(self, newValue):
260 self._value = newValue
261 self._integerDisplay, self._fractionalDisplay = split_number(newValue)
268 def conversion(self):
269 return self._conversion
271 def data(self, column):
273 return [self._name, self._integerDisplay, self._fractionalDisplay, self._unit][column]
278 class UnitModel(QtCore.QAbstractItemModel):
280 def __init__(self, categoryName, parent=None):
281 super(UnitModel, self).__init__(parent)
282 self._categoryName = categoryName
283 self._unitData = unit_data.UNIT_DESCRIPTIONS[self._categoryName]
286 for key in unit_data.get_units(self._categoryName):
287 conversion, unit, description = self._unitData[key]
288 self._children.append(UnitData(key, unit, description, conversion))
290 @misc_utils.log_exception(_moduleLogger)
291 def columnCount(self, parent):
295 return len(UnitData.HEADERS)
297 @misc_utils.log_exception(_moduleLogger)
298 def data(self, index, role):
299 if not index.isValid():
301 elif role == QtCore.Qt.TextAlignmentRole:
302 return UnitData.ALIGNMENT[index.column()]
303 elif role != QtCore.Qt.DisplayRole:
306 item = index.internalPointer()
307 if isinstance(item, UnitData):
308 return item.data(index.column())
309 elif item is UnitData.HEADERS:
310 return item[index.column()]
312 @misc_utils.log_exception(_moduleLogger)
313 def sort(self, column, order = QtCore.Qt.AscendingOrder):
314 isReverse = order == QtCore.Qt.AscendingOrder
316 key_func = lambda item: item.name
317 elif column in [1, 2]:
318 key_func = lambda item: item.value
320 key_func = lambda item: item.unit
321 self._children.sort(key=key_func, reverse = isReverse)
325 @misc_utils.log_exception(_moduleLogger)
326 def flags(self, index):
327 if not index.isValid():
328 return QtCore.Qt.NoItemFlags
330 return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
332 @misc_utils.log_exception(_moduleLogger)
333 def headerData(self, section, orientation, role):
334 if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
335 return UnitData.HEADERS[section]
339 @misc_utils.log_exception(_moduleLogger)
340 def index(self, row, column, parent):
341 if not self.hasIndex(row, column, parent):
342 return QtCore.QModelIndex()
345 return QtCore.QModelIndex()
347 parentItem = UnitData.HEADERS
348 childItem = self._children[row]
350 return self.createIndex(row, column, childItem)
352 return QtCore.QModelIndex()
354 @misc_utils.log_exception(_moduleLogger)
355 def parent(self, index):
356 if not index.isValid():
357 return QtCore.QModelIndex()
359 childItem = index.internalPointer()
360 if isinstance(childItem, UnitData):
361 return QtCore.QModelIndex()
362 elif childItem is UnitData.HEADERS:
365 @misc_utils.log_exception(_moduleLogger)
366 def rowCount(self, parent):
367 if 0 < parent.column():
370 if not parent.isValid():
371 return len(self._children)
373 return len(self._children)
375 def get_unit(self, index):
376 return self._children[index]
378 def index_unit(self, unitName):
379 for i, child in enumerate(self._children):
380 if child.name == unitName:
383 raise RuntimeError("Unit not found")
385 def update_values(self, fromIndex, userInput):
386 value = self._sanitize_value(userInput)
387 func, arg = self._children[fromIndex].conversion
388 base = func.to_base(value, arg)
389 for i, child in enumerate(self._children):
392 func, arg = child.conversion
393 newValue = func.from_base(base, arg)
394 child.update_value(newValue)
398 def _all_changed(self):
399 topLeft = self.createIndex(0, 1, self._children[0])
400 bottomRight = self.createIndex(len(self._children)-1, 2, self._children[-1])
401 self.dataChanged.emit(topLeft, bottomRight)
403 def _sanitize_value(self, userEntry):
404 if self._categoryName == "Computer Numbers":
413 value = float(userEntry)
417 class UnitWindow(object):
419 def __init__(self, parent, category, app):
421 self._categoryName = category
422 self._selectedIndex = 0
424 self._selectedUnitName = QtGui.QLabel()
425 self._selectedUnitValue = QtGui.QLineEdit()
426 self._selectedUnitValue.textEdited.connect(self._on_value_edited)
427 self._selectedUnitSymbol = QtGui.QLabel()
429 self._selectedUnitLayout = QtGui.QHBoxLayout()
430 self._selectedUnitLayout.addWidget(self._selectedUnitName)
431 self._selectedUnitLayout.addWidget(self._selectedUnitValue)
432 self._selectedUnitLayout.addWidget(self._selectedUnitSymbol)
434 self._unitsModel = UnitModel(self._categoryName)
435 self._unitsView = QtGui.QTreeView()
436 self._unitsView.setModel(self._unitsModel)
437 self._unitsView.clicked.connect(self._on_unit_clicked)
438 self._unitsView.setUniformRowHeights(True)
439 self._unitsView.header().setSortIndicatorShown(True)
440 self._unitsView.header().setClickable(True)
441 self._unitsView.setSortingEnabled(True)
442 self._unitsView.setAlternatingRowColors(True)
444 self._unitsView.setHeaderHidden(True)
446 self._layout = QtGui.QVBoxLayout()
447 self._layout.addLayout(self._selectedUnitLayout)
448 self._layout.addWidget(self._unitsView)
450 centralWidget = QtGui.QWidget()
451 centralWidget.setLayout(self._layout)
453 self._window = QtGui.QMainWindow(parent)
454 if parent is not None:
455 self._window.setWindowModality(QtCore.Qt.WindowModal)
456 self._window.setWindowTitle("%s - %s" % (constants.__pretty_app_name__, category))
457 self._window.setWindowIcon(QtGui.QIcon(app.appIconPath))
458 self._window.setCentralWidget(centralWidget)
461 self._unitsModel.sort(1)
463 self._sortActionGroup = QtGui.QActionGroup(None)
464 self._sortByNameAction = QtGui.QAction(self._sortActionGroup)
465 self._sortByNameAction.setText("Sort By Name")
466 self._sortByNameAction.setStatusTip("Sort the units by name")
467 self._sortByNameAction.setToolTip("Sort the units by name")
468 self._sortByValueAction = QtGui.QAction(self._sortActionGroup)
469 self._sortByValueAction.setText("Sort By Value")
470 self._sortByValueAction.setStatusTip("Sort the units by value")
471 self._sortByValueAction.setToolTip("Sort the units by value")
472 self._sortByUnitAction = QtGui.QAction(self._sortActionGroup)
473 self._sortByUnitAction.setText("Sort By Unit")
474 self._sortByUnitAction.setStatusTip("Sort the units by unit")
475 self._sortByUnitAction.setToolTip("Sort the units by unit")
477 self._sortByValueAction.setChecked(True)
479 viewMenu = self._window.menuBar().addMenu("&View")
480 viewMenu.addAction(self._app.jumpAction)
481 viewMenu.addSeparator()
482 viewMenu.addAction(self._sortByNameAction)
483 viewMenu.addAction(self._sortByValueAction)
484 viewMenu.addAction(self._sortByUnitAction)
486 self._sortByNameAction.triggered.connect(self._on_sort_by_name)
487 self._sortByValueAction.triggered.connect(self._on_sort_by_value)
488 self._sortByUnitAction.triggered.connect(self._on_sort_by_unit)
495 def select_unit(self, unitName):
496 index = self._unitsModel.index_unit(unitName)
497 self._select_unit(index)
499 @misc_utils.log_exception(_moduleLogger)
500 def _on_sort_by_name(self, checked = False):
501 self._unitsModel.sort(0, QtCore.Qt.DescendingOrder)
503 @misc_utils.log_exception(_moduleLogger)
504 def _on_sort_by_value(self, checked = False):
505 self._unitsModel.sort(1)
507 @misc_utils.log_exception(_moduleLogger)
508 def _on_sort_by_unit(self, checked = False):
509 self._unitsModel.sort(3, QtCore.Qt.DescendingOrder)
511 @misc_utils.log_exception(_moduleLogger)
512 def _on_unit_clicked(self, index):
513 self._select_unit(index.row())
515 @misc_utils.log_exception(_moduleLogger)
516 def _on_value_edited(self, *args):
517 userInput = self._selectedUnitValue.text()
518 self._unitsModel.update_values(self._selectedIndex, str(userInput))
520 def _select_unit(self, index):
521 unit = self._unitsModel.get_unit(index)
522 self._selectedUnitName.setText(unit.name)
523 self._selectedUnitValue.setText(str(unit.value))
524 self._selectedUnitSymbol.setText(unit.unit)
526 self._selectedIndex = index
527 qindex = self._unitsModel.createIndex(index, 0, self._unitsModel.get_unit(index))
528 self._unitsView.scrollTo(qindex)
532 app = QtGui.QApplication([])
537 if __name__ == "__main__":
538 logging.basicConfig(level = logging.DEBUG)
540 os.makedirs(constants._data_path_)