ea10c7cfc1
remove hashlib import add filehash of external plugins to PluginDialog add emptyline add filehash of external plugins to PluginDialog
1491 lines
51 KiB
Python
1491 lines
51 KiB
Python
from abc import ABC, ABCMeta
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import os.path
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import time
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import sys
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import platform
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import queue
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import os
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import webbrowser
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from functools import partial, lru_cache, wraps
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from typing import (NamedTuple, Callable, Optional, TYPE_CHECKING, List, Any, Sequence, Tuple)
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from PyQt6 import QtCore
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from PyQt6.QtGui import (QFont, QColor, QCursor, QPixmap, QImage,
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QPalette, QIcon, QFontMetrics, QPainter, QContextMenuEvent)
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from PyQt6.QtCore import (Qt, pyqtSignal, QCoreApplication, QThread, QSize, QRect, QPoint, QObject)
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from PyQt6.QtWidgets import (QPushButton, QLabel, QMessageBox, QHBoxLayout, QVBoxLayout, QLineEdit,
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QStyle, QDialog, QGroupBox, QButtonGroup, QRadioButton,
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QFileDialog, QWidget, QToolButton, QPlainTextEdit, QApplication, QToolTip,
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QGraphicsEffect, QGraphicsScene, QGraphicsPixmapItem, QLayoutItem, QLayout, QMenu,
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QFrame)
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from electrum.i18n import _
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from electrum.util import FileImportFailed, FileExportFailed, resource_path
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from electrum.util import EventListener, event_listener, get_logger, UserCancelled, UserFacingException
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from electrum.invoices import PR_UNPAID, PR_PAID, PR_EXPIRED, PR_INFLIGHT, PR_UNKNOWN, PR_FAILED, PR_ROUTING, PR_UNCONFIRMED, PR_BROADCASTING, PR_BROADCAST
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from electrum.logging import Logger
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from electrum.qrreader import MissingQrDetectionLib, QrCodeResult
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if TYPE_CHECKING:
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from .main_window import ElectrumWindow
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from .paytoedit import PayToEdit
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from electrum.simple_config import SimpleConfig
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from electrum.simple_config import ConfigVarWithConfig
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if platform.system() == 'Windows':
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MONOSPACE_FONT = 'Lucida Console'
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elif platform.system() == 'Darwin':
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MONOSPACE_FONT = 'Monaco'
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else:
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MONOSPACE_FONT = 'monospace'
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_logger = get_logger(__name__)
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dialogs = []
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pr_icons = {
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PR_UNKNOWN: "warning.png",
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PR_UNPAID: "unpaid.png",
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PR_PAID: "confirmed.png",
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PR_EXPIRED: "expired.png",
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PR_INFLIGHT: "unconfirmed.png",
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PR_FAILED: "warning.png",
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PR_ROUTING: "unconfirmed.png",
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PR_UNCONFIRMED: "unconfirmed.png",
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PR_BROADCASTING: "unconfirmed.png",
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PR_BROADCAST: "unconfirmed.png",
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}
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# filter tx files in QFileDialog:
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TRANSACTION_FILE_EXTENSION_FILTER_ANY = "Transaction (*.txn *.psbt);;All files (*)"
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TRANSACTION_FILE_EXTENSION_FILTER_ONLY_PARTIAL_TX = "Partial Transaction (*.psbt)"
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TRANSACTION_FILE_EXTENSION_FILTER_ONLY_COMPLETE_TX = "Complete Transaction (*.txn)"
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TRANSACTION_FILE_EXTENSION_FILTER_SEPARATE = (f"{TRANSACTION_FILE_EXTENSION_FILTER_ONLY_PARTIAL_TX};;"
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f"{TRANSACTION_FILE_EXTENSION_FILTER_ONLY_COMPLETE_TX};;"
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f"All files (*)")
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class EnterButton(QPushButton):
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def __init__(self, text, func):
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QPushButton.__init__(self, text)
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self.func = func
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self.clicked.connect(func)
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self._orig_text = text
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def keyPressEvent(self, e):
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if e.key() in [Qt.Key.Key_Return, Qt.Key.Key_Enter]:
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self.func()
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def restore_original_text(self):
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self.setText(self._orig_text)
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class ThreadedButton(QPushButton):
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def __init__(self, text, task, on_success=None, on_error=None):
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QPushButton.__init__(self, text)
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self.task = task
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self.on_success = on_success
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self.on_error = on_error
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self.clicked.connect(self.run_task)
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def run_task(self):
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self.setEnabled(False)
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self.thread = TaskThread(self)
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self.thread.add(self.task, self.on_success, self.done, self.on_error)
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def done(self):
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self.setEnabled(True)
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self.thread.stop()
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class WWLabel(QLabel):
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def __init__ (self, text="", parent=None):
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QLabel.__init__(self, text, parent)
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self.setWordWrap(True)
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self.setTextInteractionFlags(Qt.TextInteractionFlag.TextSelectableByMouse)
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class AmountLabel(QLabel):
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def __init__(self, *args, **kwargs):
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QLabel.__init__(self, *args, **kwargs)
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self.setFont(QFont(MONOSPACE_FONT))
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self.setTextInteractionFlags(Qt.TextInteractionFlag.TextSelectableByMouse)
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class HelpMixin:
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def __init__(self, help_text: str, *, help_title: str = None):
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assert isinstance(self, QWidget), "HelpMixin must be a QWidget instance!"
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self.help_text = help_text
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self._help_title = help_title or _('Help')
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if isinstance(self, QLabel):
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self.setTextInteractionFlags(
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(self.textInteractionFlags() | Qt.TextInteractionFlag.TextSelectableByMouse)
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& ~Qt.TextInteractionFlag.TextSelectableByKeyboard)
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def show_help(self):
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custom_message_box(
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icon=QMessageBox.Icon.Information,
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parent=self,
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title=self._help_title,
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text=self.help_text,
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rich_text=True,
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)
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class HelpLabel(HelpMixin, QLabel):
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def __init__(self, text: str, help_text: str):
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QLabel.__init__(self, text)
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HelpMixin.__init__(self, help_text)
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self.app = QCoreApplication.instance()
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self.font = self.font()
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@classmethod
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def from_configvar(cls, cv: 'ConfigVarWithConfig') -> 'HelpLabel':
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return HelpLabel(cv.get_short_desc() + ':', cv.get_long_desc())
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def mouseReleaseEvent(self, x):
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self.show_help()
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def enterEvent(self, event):
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self.font.setUnderline(True)
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self.setFont(self.font)
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self.app.setOverrideCursor(QCursor(Qt.CursorShape.PointingHandCursor))
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return QLabel.enterEvent(self, event)
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def leaveEvent(self, event):
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self.font.setUnderline(False)
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self.setFont(self.font)
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self.app.setOverrideCursor(QCursor(Qt.CursorShape.ArrowCursor))
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return QLabel.leaveEvent(self, event)
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class HelpButton(HelpMixin, QToolButton):
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def __init__(self, text: str):
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QToolButton.__init__(self)
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HelpMixin.__init__(self, text)
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self.setText('?')
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self.setFocusPolicy(Qt.FocusPolicy.NoFocus)
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self.setFixedWidth(round(2.2 * char_width_in_lineedit()))
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self.clicked.connect(self.show_help)
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class InfoButton(HelpMixin, QPushButton):
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def __init__(self, text: str):
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QPushButton.__init__(self, _('Info'))
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HelpMixin.__init__(self, text, help_title=_('Info'))
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self.setFocusPolicy(Qt.FocusPolicy.NoFocus)
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self.setFixedWidth(6 * char_width_in_lineedit())
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self.clicked.connect(self.show_help)
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class Buttons(QHBoxLayout):
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def __init__(self, *buttons):
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QHBoxLayout.__init__(self)
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self.addStretch(1)
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for b in buttons:
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if b is None:
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continue
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self.addWidget(b)
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class CloseButton(QPushButton):
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def __init__(self, dialog):
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QPushButton.__init__(self, _("Close"))
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self.clicked.connect(dialog.close)
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self.setDefault(True)
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class CopyButton(QPushButton):
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def __init__(self, text_getter, app):
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QPushButton.__init__(self, _("Copy"))
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self.clicked.connect(lambda: app.clipboard().setText(text_getter()))
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class CopyCloseButton(QPushButton):
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def __init__(self, text_getter, app, dialog):
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QPushButton.__init__(self, _("Copy and Close"))
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self.clicked.connect(lambda: app.clipboard().setText(text_getter()))
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self.clicked.connect(dialog.close)
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self.setDefault(True)
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class OkButton(QPushButton):
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def __init__(self, dialog, label=None):
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QPushButton.__init__(self, label or _("OK"))
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self.clicked.connect(dialog.accept)
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self.setDefault(True)
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class CancelButton(QPushButton):
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def __init__(self, dialog, label=None):
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QPushButton.__init__(self, label or _("Cancel"))
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self.clicked.connect(dialog.reject)
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class MessageBoxMixin(object):
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def top_level_window_recurse(self, window=None, test_func=None):
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window = window or self
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classes = (WindowModalDialog, QMessageBox)
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if test_func is None:
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test_func = lambda x: True
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for n, child in enumerate(window.children()):
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# Test for visibility as old closed dialogs may not be GC-ed.
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# Only accept children that confirm to test_func.
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if isinstance(child, classes) and child.isVisible() \
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and test_func(child):
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return self.top_level_window_recurse(child, test_func=test_func)
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return window
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def top_level_window(self, test_func=None):
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return self.top_level_window_recurse(test_func)
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def question(self, msg, parent=None, title=None, icon=None, **kwargs) -> bool:
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Yes, No = QMessageBox.StandardButton.Yes, QMessageBox.StandardButton.No
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return Yes == self.msg_box(icon=icon or QMessageBox.Icon.Question,
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parent=parent,
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title=title or '',
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text=msg,
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buttons=Yes|No,
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defaultButton=No,
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**kwargs)
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def show_warning(self, msg, parent=None, title=None, **kwargs):
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return self.msg_box(QMessageBox.Icon.Warning, parent,
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title or _('Warning'), msg, **kwargs)
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def show_error(self, msg, parent=None, **kwargs):
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return self.msg_box(QMessageBox.Icon.Warning, parent,
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_('Error'), msg, **kwargs)
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def show_critical(self, msg, parent=None, title=None, **kwargs):
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return self.msg_box(QMessageBox.Icon.Critical, parent,
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title or _('Critical Error'), msg, **kwargs)
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def show_message(self, msg, parent=None, title=None, **kwargs):
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return self.msg_box(QMessageBox.Icon.Information, parent,
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title or _('Information'), msg, **kwargs)
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def msg_box(self, icon, parent, title, text, *, buttons=QMessageBox.StandardButton.Ok,
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defaultButton=QMessageBox.StandardButton.NoButton, rich_text=False,
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checkbox=None):
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parent = parent or self.top_level_window()
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return custom_message_box(icon=icon,
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parent=parent,
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title=title,
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text=text,
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buttons=buttons,
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defaultButton=defaultButton,
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rich_text=rich_text,
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checkbox=checkbox)
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def query_choice(self,
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msg: Optional[str],
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choices: Sequence[Tuple],
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title: Optional[str] = None,
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default_choice: Optional[Any] = None) -> Optional[Any]:
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# Needed by QtHandler for hardware wallets
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if title is None:
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title = _('Question')
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dialog = WindowModalDialog(self.top_level_window(), title=title)
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dialog.setMinimumWidth(400)
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choice_widget = ChoiceWidget(message=msg, choices=choices, selected=default_choice)
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vbox = QVBoxLayout(dialog)
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vbox.addWidget(choice_widget)
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cancel_button = CancelButton(dialog)
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vbox.addLayout(Buttons(cancel_button, OkButton(dialog)))
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cancel_button.setFocus()
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if not dialog.exec():
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return None
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return choice_widget.selected_key
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def custom_message_box(*, icon, parent, title, text, buttons=QMessageBox.StandardButton.Ok,
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defaultButton=QMessageBox.StandardButton.NoButton, rich_text=False,
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checkbox=None):
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if type(icon) is QPixmap:
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d = QMessageBox(QMessageBox.Icon.Information, title, str(text), buttons, parent)
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d.setIconPixmap(icon)
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else:
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d = QMessageBox(icon, title, str(text), buttons, parent)
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d.setWindowModality(Qt.WindowModality.WindowModal)
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d.setDefaultButton(defaultButton)
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if rich_text:
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d.setTextInteractionFlags(Qt.TextInteractionFlag.TextSelectableByMouse | Qt.TextInteractionFlag.LinksAccessibleByMouse)
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# set AutoText instead of RichText
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# AutoText lets Qt figure out whether to render as rich text.
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# e.g. if text is actually plain text and uses "\n" newlines;
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# and we set RichText here, newlines would be swallowed
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d.setTextFormat(Qt.TextFormat.AutoText)
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else:
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d.setTextInteractionFlags(Qt.TextInteractionFlag.TextSelectableByMouse)
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d.setTextFormat(Qt.TextFormat.PlainText)
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if checkbox is not None:
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d.setCheckBox(checkbox)
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return d.exec()
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class WindowModalDialog(QDialog, MessageBoxMixin):
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'''Handy wrapper; window modal dialogs are better for our multi-window
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daemon model as other wallet windows can still be accessed.'''
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def __init__(self, parent, title=None):
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QDialog.__init__(self, parent)
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self.setWindowModality(Qt.WindowModality.WindowModal)
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if title:
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self.setWindowTitle(title)
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class WaitingDialog(WindowModalDialog):
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'''Shows a please wait dialog whilst running a task. It is not
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necessary to maintain a reference to this dialog.'''
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def __init__(self, parent: QWidget, message: str, task, on_success=None, on_error=None, on_cancel=None):
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assert parent
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if isinstance(parent, MessageBoxMixin):
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parent = parent.top_level_window()
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WindowModalDialog.__init__(self, parent, _("Please wait"))
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self.message_label = QLabel(message)
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vbox = QVBoxLayout(self)
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vbox.addWidget(self.message_label)
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if on_cancel:
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self.cancel_button = CancelButton(self)
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self.cancel_button.clicked.connect(on_cancel)
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vbox.addLayout(Buttons(self.cancel_button))
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self.accepted.connect(self.on_accepted)
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self.show()
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self.thread = TaskThread(self)
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self.thread.finished.connect(self.deleteLater) # see #3956
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self.thread.add(task, on_success, self.accept, on_error)
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def wait(self):
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self.thread.wait()
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def on_accepted(self):
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self.thread.stop()
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def update(self, msg):
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print(msg)
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self.message_label.setText(msg)
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class RunCoroutineDialog(WaitingDialog):
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def __init__(self, parent: QWidget, message: str, coroutine):
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from electrum import util
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import asyncio
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import concurrent.futures
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loop = util.get_asyncio_loop()
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assert util.get_running_loop() != loop, 'must not be called from asyncio thread'
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self._exception = None
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self._result = None
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self._future = asyncio.run_coroutine_threadsafe(coroutine, loop)
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def task():
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try:
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self._result = self._future.result()
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except concurrent.futures.CancelledError:
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self._exception = UserCancelled
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except Exception as e:
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self._exception = e
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WaitingDialog.__init__(self, parent, message, task, on_cancel=self._future.cancel)
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def run(self):
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self.exec()
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if self._exception:
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raise self._exception
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else:
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return self._result
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def line_dialog(parent, title, label, ok_label, default=None):
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dialog = WindowModalDialog(parent, title)
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dialog.setMinimumWidth(500)
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l = QVBoxLayout()
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dialog.setLayout(l)
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l.addWidget(QLabel(label))
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txt = QLineEdit()
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if default:
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txt.setText(default)
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l.addWidget(txt)
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l.addLayout(Buttons(CancelButton(dialog), OkButton(dialog, ok_label)))
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if dialog.exec():
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return txt.text()
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def text_dialog(
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*,
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parent,
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title,
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header_layout,
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ok_label,
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default=None,
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allow_multi=False,
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config: 'SimpleConfig',
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):
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from .qrtextedit import ScanQRTextEdit
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dialog = WindowModalDialog(parent, title)
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dialog.setMinimumWidth(600)
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l = QVBoxLayout()
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dialog.setLayout(l)
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if isinstance(header_layout, str):
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l.addWidget(QLabel(header_layout))
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else:
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l.addLayout(header_layout)
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txt = ScanQRTextEdit(allow_multi=allow_multi, config=config)
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if default:
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txt.setText(default)
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l.addWidget(txt)
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l.addLayout(Buttons(CancelButton(dialog), OkButton(dialog, ok_label)))
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if dialog.exec():
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return txt.toPlainText()
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|
|
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class ChoiceWidget(QWidget):
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"""Renders a list of tuples as a radiobuttons group.
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The first element of each tuple is used as a key.
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The second element of each tuple is used as user facing string.
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The remainder of the tuple can be any additional data.
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Callers can pre-select an item by key, through the 'selected' parameter.
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The selected item is made available by index (selected_index),
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by key (selected_key) and by whole tuple (selected_item).
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"""
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itemSelected = pyqtSignal([int], arguments=['index'])
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def __init__(self, *, message: Optional[str] = None, choices: Sequence[Tuple] = None, selected: Optional[Any] = None):
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QWidget.__init__(self)
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vbox = QVBoxLayout()
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self.setLayout(vbox)
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if choices is None:
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choices = []
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self.selected_index = -1 # int
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self.selected_item = None # Optional[Tuple]
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self.selected_key = None # Optional[Any]
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self.choices = choices
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if message and len(message) > 50:
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vbox.addWidget(WWLabel(message))
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message = ""
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gb2 = QGroupBox(message)
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vbox.addWidget(gb2)
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vbox2 = QVBoxLayout()
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gb2.setLayout(vbox2)
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self.group = group = QButtonGroup()
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assert isinstance(choices, list)
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iterator = enumerate(choices)
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for i, c in iterator:
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button = QRadioButton(gb2)
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button.setText(c[1])
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vbox2.addWidget(button)
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group.addButton(button)
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group.setId(button, i)
|
|
if (i == 0 and selected is None) or c[0] == selected:
|
|
self.selected_index = i
|
|
self.selected_item = c
|
|
self.selected_key = c[0]
|
|
button.setChecked(True)
|
|
group.buttonClicked.connect(self.on_selected)
|
|
|
|
def on_selected(self, button):
|
|
self.selected_index = self.group.id(button)
|
|
self.selected_item = self.choices[self.selected_index]
|
|
self.selected_key = self.choices[self.selected_index][0]
|
|
self.itemSelected.emit(self.selected_index)
|
|
|
|
def select(self, key):
|
|
iterator = enumerate(self.choices)
|
|
for i, c in iterator:
|
|
if key == c[0]:
|
|
self.group.button(i).click()
|
|
|
|
|
|
class ResizableStackedWidget(QWidget):
|
|
"""Simple alternative to QStackedWidget, as QStackedWidget always resizes to the largest
|
|
widget in the stack, leaving ugly scrollbars where they're not needed."""
|
|
def __init__(self, parent):
|
|
super().__init__(parent)
|
|
self.setLayout(QVBoxLayout())
|
|
self.widgets = []
|
|
self.current_index = -1
|
|
|
|
def sizeHint(self) -> QSize:
|
|
if not self.count() or not self.currentWidget():
|
|
return super().sizeHint()
|
|
return self.currentWidget().sizeHint()
|
|
|
|
def addWidget(self, widget: QWidget) -> int:
|
|
self.widgets.append(widget)
|
|
self.layout().addWidget(widget)
|
|
if len(self.widgets) == 1: # first widget?
|
|
self.current_index = 0
|
|
self.showCurrentWidget()
|
|
return len(self.widgets) - 1
|
|
|
|
def removeWidget(self, widget: QWidget):
|
|
i = self.widgets.index(widget)
|
|
self.widgets.remove(widget)
|
|
self.layout().removeWidget(widget)
|
|
if self.current_index >= i:
|
|
self.current_index -= 1
|
|
if self.current_index == self.count() - 1:
|
|
self.showCurrentWidget()
|
|
|
|
def setCurrentIndex(self, index: int):
|
|
assert isinstance(index, int)
|
|
assert 0 <= index < len(self.widgets), f'invalid widget index {index}'
|
|
self.current_index = index
|
|
self.showCurrentWidget()
|
|
|
|
def currentWidget(self) -> Optional[QWidget]:
|
|
if self.current_index < 0:
|
|
return None
|
|
return self.widgets[self.current_index]
|
|
|
|
def showCurrentWidget(self):
|
|
if not self.widgets:
|
|
return
|
|
|
|
for i, k in enumerate(self.widgets):
|
|
if i == self.current_index:
|
|
k.show()
|
|
else:
|
|
k.hide()
|
|
|
|
def count(self) -> int:
|
|
return len(self.widgets)
|
|
|
|
|
|
class VLine(QFrame):
|
|
"""Vertical line separator"""
|
|
def __init__(self):
|
|
super(VLine, self).__init__()
|
|
self.setFrameShape(QFrame.Shape.VLine)
|
|
self.setFrameShadow(QFrame.Shadow.Sunken)
|
|
self.setLineWidth(1)
|
|
|
|
|
|
def address_field(addresses, *, btn_text: str = None):
|
|
if btn_text is None:
|
|
btn_text = _('Get wallet address')
|
|
hbox = QHBoxLayout()
|
|
address_e = QLineEdit()
|
|
if addresses and len(addresses) > 0:
|
|
address_e.setText(addresses[0])
|
|
else:
|
|
addresses = []
|
|
|
|
def func():
|
|
try:
|
|
i = addresses.index(str(address_e.text())) + 1
|
|
i = i % len(addresses)
|
|
address_e.setText(addresses[i])
|
|
except ValueError:
|
|
# the user might have changed address_e to an
|
|
# address not in the wallet (or to something that isn't an address)
|
|
if addresses and len(addresses) > 0:
|
|
address_e.setText(addresses[0])
|
|
button = QPushButton(btn_text)
|
|
button.clicked.connect(func)
|
|
hbox.addWidget(button)
|
|
hbox.addWidget(address_e)
|
|
return hbox, address_e
|
|
|
|
|
|
def filename_field(parent, config, defaultname, select_msg):
|
|
vbox = QVBoxLayout()
|
|
vbox.addWidget(QLabel(_("Format")))
|
|
gb = QGroupBox("format", parent)
|
|
b1 = QRadioButton(gb)
|
|
b1.setText(_("CSV"))
|
|
b1.setChecked(True)
|
|
b2 = QRadioButton(gb)
|
|
b2.setText(_("json"))
|
|
vbox.addWidget(b1)
|
|
vbox.addWidget(b2)
|
|
|
|
hbox = QHBoxLayout()
|
|
|
|
directory = config.IO_DIRECTORY
|
|
path = os.path.join(directory, defaultname)
|
|
filename_e = QLineEdit()
|
|
filename_e.setText(path)
|
|
|
|
def func():
|
|
text = filename_e.text()
|
|
_filter = "*.csv" if defaultname.endswith(".csv") else "*.json" if defaultname.endswith(".json") else None
|
|
p = getSaveFileName(
|
|
parent=None,
|
|
title=select_msg,
|
|
filename=text,
|
|
filter=_filter,
|
|
config=config,
|
|
)
|
|
if p:
|
|
filename_e.setText(p)
|
|
|
|
button = QPushButton(_('File'))
|
|
button.clicked.connect(func)
|
|
hbox.addWidget(button)
|
|
hbox.addWidget(filename_e)
|
|
vbox.addLayout(hbox)
|
|
|
|
def set_csv(v):
|
|
text = filename_e.text()
|
|
text = text.replace(".json",".csv") if v else text.replace(".csv",".json")
|
|
filename_e.setText(text)
|
|
|
|
b1.clicked.connect(lambda: set_csv(True))
|
|
b2.clicked.connect(lambda: set_csv(False))
|
|
|
|
return vbox, filename_e, b1
|
|
|
|
|
|
def get_iconname_qrcode() -> str:
|
|
return "qrcode_white.png" if ColorScheme.dark_scheme else "qrcode.png"
|
|
|
|
|
|
def get_iconname_camera() -> str:
|
|
return "camera_white.png" if ColorScheme.dark_scheme else "camera_dark.png"
|
|
|
|
|
|
def editor_contextMenuEvent(self, p: 'PayToEdit', e: 'QContextMenuEvent') -> None:
|
|
m = self.createStandardContextMenu()
|
|
m.addSeparator()
|
|
m.addAction(read_QIcon(get_iconname_camera()), _("Read QR code with camera"), p.on_qr_from_camera_input_btn)
|
|
m.addAction(read_QIcon("picture_in_picture.png"), _("Read QR code from screen"), p.on_qr_from_screenshot_input_btn)
|
|
m.addAction(read_QIcon("file.png"), _("Read file"), p.on_input_file)
|
|
m.exec(e.globalPos())
|
|
|
|
|
|
def scan_qr_from_screenshot() -> QrCodeResult:
|
|
from .qrreader import scan_qr_from_image
|
|
screenshots = [screen.grabWindow(0).toImage()
|
|
for screen in QApplication.instance().screens()]
|
|
if all(screen.allGray() for screen in screenshots):
|
|
raise UserFacingException(_("Failed to take screenshot."))
|
|
scanned_qr = None
|
|
for screenshot in screenshots:
|
|
try:
|
|
scan_result = scan_qr_from_image(screenshot)
|
|
except MissingQrDetectionLib as e:
|
|
raise UserFacingException(_("Unable to scan image.") + "\n" + repr(e))
|
|
if len(scan_result) > 0:
|
|
if (scanned_qr is not None) or len(scan_result) > 1:
|
|
raise UserFacingException(_("More than one QR code was found on the screen."))
|
|
scanned_qr = scan_result
|
|
if scanned_qr is None:
|
|
raise UserFacingException(_("No QR code was found on the screen."))
|
|
assert len(scanned_qr) == 1, f"{len(scanned_qr)=}, expected 1"
|
|
return scanned_qr[0]
|
|
|
|
|
|
class GenericInputHandler:
|
|
def input_qr_from_camera(
|
|
self,
|
|
*,
|
|
config: 'SimpleConfig',
|
|
allow_multi: bool = False,
|
|
show_error: Callable[[str], None],
|
|
setText: Callable[[str], None] = None,
|
|
parent: QWidget = None,
|
|
) -> None:
|
|
if setText is None:
|
|
setText = self.setText
|
|
def cb(success: bool, error: str, data: Optional[str]):
|
|
if not success:
|
|
if error:
|
|
show_error(error)
|
|
return
|
|
if not data:
|
|
data = ''
|
|
try:
|
|
if allow_multi:
|
|
text = self.text()
|
|
if data in text:
|
|
return
|
|
if text and not text.endswith('\n'):
|
|
text += '\n'
|
|
text += data
|
|
text += '\n'
|
|
setText(text)
|
|
else:
|
|
new_text = data
|
|
setText(new_text)
|
|
except Exception as e:
|
|
show_error(_('Invalid payment identifier in QR') + ':\n' + repr(e))
|
|
|
|
from .qrreader import scan_qrcode
|
|
if parent is None:
|
|
parent = self if isinstance(self, QWidget) else None
|
|
scan_qrcode(parent=parent, config=config, callback=cb)
|
|
|
|
def input_qr_from_screenshot(
|
|
self,
|
|
*,
|
|
allow_multi: bool = False,
|
|
show_error: Callable[[str], None],
|
|
setText: Callable[[str], None] = None,
|
|
) -> None:
|
|
if setText is None:
|
|
setText = self.setText
|
|
try:
|
|
scanned_qr = scan_qr_from_screenshot()
|
|
except UserFacingException as e:
|
|
show_error(str(e))
|
|
return
|
|
data = scanned_qr.data
|
|
try:
|
|
if allow_multi:
|
|
text = self.text()
|
|
if data in text:
|
|
return
|
|
if text and not text.endswith('\n'):
|
|
text += '\n'
|
|
text += data
|
|
text += '\n'
|
|
setText(text)
|
|
else:
|
|
new_text = data
|
|
setText(new_text)
|
|
except Exception as e:
|
|
show_error(_('Invalid payment identifier in QR') + ':\n' + repr(e))
|
|
|
|
def input_file(
|
|
self,
|
|
*,
|
|
config: 'SimpleConfig',
|
|
show_error: Callable[[str], None],
|
|
setText: Callable[[str], None] = None,
|
|
) -> None:
|
|
if setText is None:
|
|
setText = self.setText
|
|
fileName = getOpenFileName(
|
|
parent=None,
|
|
title='select file',
|
|
config=config,
|
|
)
|
|
if not fileName:
|
|
return
|
|
try:
|
|
try:
|
|
with open(fileName, "r") as f:
|
|
data = f.read()
|
|
except UnicodeError as e:
|
|
with open(fileName, "rb") as f:
|
|
data = f.read()
|
|
data = data.hex()
|
|
except BaseException as e:
|
|
show_error(_('Error opening file') + ':\n' + repr(e))
|
|
else:
|
|
try:
|
|
setText(data)
|
|
except Exception as e:
|
|
show_error(_('Invalid payment identifier in file') + ':\n' + repr(e))
|
|
|
|
def input_paste_from_clipboard(
|
|
self,
|
|
*,
|
|
setText: Callable[[str], None] = None,
|
|
) -> None:
|
|
if setText is None:
|
|
setText = self.setText
|
|
app = QApplication.instance()
|
|
setText(app.clipboard().text())
|
|
|
|
|
|
class OverlayControlMixin(GenericInputHandler):
|
|
STYLE_SHEET_COMMON = '''
|
|
QPushButton { border-width: 1px; padding: 0px; margin: 0px; }
|
|
'''
|
|
|
|
STYLE_SHEET_LIGHT = '''
|
|
QPushButton { border: 1px solid transparent; }
|
|
QPushButton:hover { border: 1px solid #3daee9; }
|
|
'''
|
|
|
|
def __init__(self, middle: bool = False):
|
|
GenericInputHandler.__init__(self)
|
|
assert isinstance(self, QWidget)
|
|
assert isinstance(self, OverlayControlMixin) # only here for type-hints in IDE
|
|
self.middle = middle
|
|
self.overlay_widget = QWidget(self)
|
|
style_sheet = self.STYLE_SHEET_COMMON
|
|
if not ColorScheme.dark_scheme:
|
|
style_sheet = style_sheet + self.STYLE_SHEET_LIGHT
|
|
self.overlay_widget.setStyleSheet(style_sheet)
|
|
self.overlay_layout = QHBoxLayout(self.overlay_widget)
|
|
self.overlay_layout.setContentsMargins(0, 0, 0, 0)
|
|
self.overlay_layout.setSpacing(1)
|
|
self._updateOverlayPos()
|
|
|
|
def resizeEvent(self, e):
|
|
super().resizeEvent(e)
|
|
self._updateOverlayPos()
|
|
|
|
def _updateOverlayPos(self):
|
|
frame_width = self.style().pixelMetric(QStyle.PixelMetric.PM_DefaultFrameWidth)
|
|
overlay_size = self.overlay_widget.sizeHint()
|
|
x = self.rect().right() - frame_width - overlay_size.width()
|
|
y = self.rect().bottom() - overlay_size.height()
|
|
middle = self.middle
|
|
if hasattr(self, 'document'):
|
|
# Keep the buttons centered if we have less than 2 lines in the editor
|
|
line_spacing = QFontMetrics(self.document().defaultFont()).lineSpacing()
|
|
if self.rect().height() < (line_spacing * 2):
|
|
middle = True
|
|
y = (y / 2) + frame_width if middle else y - frame_width
|
|
if hasattr(self, 'verticalScrollBar') and self.verticalScrollBar().isVisible():
|
|
scrollbar_width = self.style().pixelMetric(QStyle.PixelMetric.PM_ScrollBarExtent)
|
|
x -= scrollbar_width
|
|
self.overlay_widget.move(int(x), int(y))
|
|
|
|
def addWidget(self, widget: QWidget):
|
|
# The old code positioned the items the other way around, so we just insert at position 0 instead
|
|
self.overlay_layout.insertWidget(0, widget)
|
|
|
|
def addButton(self, icon_name: str, on_click, tooltip: str) -> QPushButton:
|
|
button = QPushButton(self.overlay_widget)
|
|
button.setToolTip(tooltip)
|
|
button.setIcon(read_QIcon(icon_name))
|
|
button.setCursor(QCursor(Qt.CursorShape.PointingHandCursor))
|
|
button.clicked.connect(on_click)
|
|
self.addWidget(button)
|
|
return button
|
|
|
|
def addCopyButton(self):
|
|
def on_copy():
|
|
app = QApplication.instance()
|
|
app.clipboard().setText(self.text())
|
|
QToolTip.showText(QCursor.pos(), _("Text copied to clipboard"), self)
|
|
|
|
self.addButton("copy.png", on_copy, _("Copy to clipboard"))
|
|
|
|
def addPasteButton(
|
|
self,
|
|
*,
|
|
setText: Callable[[str], None] = None,
|
|
):
|
|
input_paste_from_clipboard = partial(
|
|
self.input_paste_from_clipboard,
|
|
setText=setText,
|
|
)
|
|
self.addButton("copy.png", input_paste_from_clipboard, _("Paste from clipboard"))
|
|
|
|
def add_qr_show_button(self, *, config: 'SimpleConfig', title: Optional[str] = None):
|
|
if title is None:
|
|
title = _("QR code")
|
|
|
|
def qr_show():
|
|
from .qrcodewidget import QRDialog
|
|
try:
|
|
s = str(self.text())
|
|
except Exception:
|
|
s = self.text()
|
|
if not s:
|
|
return
|
|
QRDialog(
|
|
data=s,
|
|
parent=self,
|
|
title=title,
|
|
config=config,
|
|
).exec()
|
|
|
|
self.addButton(get_iconname_qrcode(), qr_show, _("Show as QR code"))
|
|
# side-effect: we export this method:
|
|
self.on_qr_show_btn = qr_show
|
|
|
|
def add_qr_input_combined_button(
|
|
self,
|
|
*,
|
|
config: 'SimpleConfig',
|
|
allow_multi: bool = False,
|
|
show_error: Callable[[str], None],
|
|
setText: Callable[[str], None] = None,
|
|
):
|
|
input_qr_from_camera = partial(
|
|
self.input_qr_from_camera,
|
|
config=config,
|
|
allow_multi=allow_multi,
|
|
show_error=show_error,
|
|
setText=setText,
|
|
)
|
|
input_qr_from_screenshot = partial(
|
|
self.input_qr_from_screenshot,
|
|
allow_multi=allow_multi,
|
|
show_error=show_error,
|
|
setText=setText,
|
|
)
|
|
self.add_menu_button(
|
|
icon=get_iconname_camera(),
|
|
tooltip=_("Read QR code"),
|
|
options=[
|
|
(get_iconname_camera(), _("Read QR code from camera"), input_qr_from_camera),
|
|
("picture_in_picture.png", _("Read QR code from screen"), input_qr_from_screenshot),
|
|
],
|
|
)
|
|
# side-effect: we export these methods:
|
|
self.on_qr_from_camera_input_btn = input_qr_from_camera
|
|
self.on_qr_from_screenshot_input_btn = input_qr_from_screenshot
|
|
|
|
def add_qr_input_from_camera_button(
|
|
self,
|
|
*,
|
|
config: 'SimpleConfig',
|
|
allow_multi: bool = False,
|
|
show_error: Callable[[str], None],
|
|
setText: Callable[[str], None] = None,
|
|
):
|
|
input_qr_from_camera = partial(
|
|
self.input_qr_from_camera,
|
|
config=config,
|
|
allow_multi=allow_multi,
|
|
show_error=show_error,
|
|
setText=setText,
|
|
)
|
|
self.addButton(get_iconname_camera(), input_qr_from_camera, _("Read QR code from camera"))
|
|
# side-effect: we export these methods:
|
|
self.on_qr_from_camera_input_btn = input_qr_from_camera
|
|
|
|
def add_file_input_button(
|
|
self,
|
|
*,
|
|
config: 'SimpleConfig',
|
|
show_error: Callable[[str], None],
|
|
setText: Callable[[str], None] = None,
|
|
) -> None:
|
|
input_file = partial(
|
|
self.input_file,
|
|
config=config,
|
|
show_error=show_error,
|
|
setText=setText,
|
|
)
|
|
self.addButton("file.png", input_file, _("Read file"))
|
|
|
|
def add_menu_button(
|
|
self,
|
|
*,
|
|
options: Sequence[Tuple[Optional[str], str, Callable[[], None]]], # list of (icon, text, cb)
|
|
icon: Optional[str] = None,
|
|
tooltip: Optional[str] = None,
|
|
):
|
|
if icon is None:
|
|
icon = "menu_vertical_white.png" if ColorScheme.dark_scheme else "menu_vertical.png"
|
|
if tooltip is None:
|
|
tooltip = _("Other options")
|
|
btn = self.addButton(icon, lambda: None, tooltip)
|
|
menu = QMenu()
|
|
for opt_icon, opt_text, opt_cb in options:
|
|
if opt_icon is None:
|
|
menu.addAction(opt_text, opt_cb)
|
|
else:
|
|
menu.addAction(read_QIcon(opt_icon), opt_text, opt_cb)
|
|
btn.setMenu(menu)
|
|
|
|
|
|
class ButtonsLineEdit(OverlayControlMixin, QLineEdit):
|
|
def __init__(self, text=None):
|
|
QLineEdit.__init__(self, text)
|
|
OverlayControlMixin.__init__(self, middle=True)
|
|
|
|
|
|
class ShowQRLineEdit(ButtonsLineEdit):
|
|
""" read-only line with qr and copy buttons """
|
|
def __init__(self, text: str, config, title=None):
|
|
ButtonsLineEdit.__init__(self, text)
|
|
self.setReadOnly(True)
|
|
self.setFont(QFont(MONOSPACE_FONT))
|
|
self.add_qr_show_button(config=config, title=title)
|
|
self.addCopyButton()
|
|
|
|
|
|
class ButtonsTextEdit(OverlayControlMixin, QPlainTextEdit):
|
|
def __init__(self, text=None):
|
|
QPlainTextEdit.__init__(self, text)
|
|
OverlayControlMixin.__init__(self)
|
|
self.setText = self.setPlainText
|
|
self.text = self.toPlainText
|
|
|
|
|
|
class PasswordLineEdit(QLineEdit):
|
|
def __init__(self, *args, **kwargs):
|
|
QLineEdit.__init__(self, *args, **kwargs)
|
|
self.setEchoMode(QLineEdit.EchoMode.Password)
|
|
|
|
def clear(self):
|
|
# Try to actually overwrite the memory.
|
|
# This is really just a best-effort thing...
|
|
self.setText(len(self.text()) * " ")
|
|
super().clear()
|
|
|
|
|
|
class TaskThread(QThread, Logger):
|
|
'''Thread that runs background tasks. Callbacks are guaranteed
|
|
to happen in the context of its parent.'''
|
|
|
|
class Task(NamedTuple):
|
|
task: Callable
|
|
cb_success: Optional[Callable]
|
|
cb_done: Optional[Callable]
|
|
cb_error: Optional[Callable]
|
|
cancel: Optional[Callable] = None
|
|
|
|
doneSig = pyqtSignal(object, object, object)
|
|
|
|
def __init__(self, parent, on_error=None):
|
|
QThread.__init__(self, parent)
|
|
Logger.__init__(self)
|
|
self.on_error = on_error
|
|
self.tasks = queue.Queue()
|
|
self._cur_task = None # type: Optional[TaskThread.Task]
|
|
self._stopping = False
|
|
self.doneSig.connect(self.on_done)
|
|
self.start()
|
|
|
|
def add(self, task, on_success=None, on_done=None, on_error=None, *, cancel=None):
|
|
if self._stopping:
|
|
self.logger.warning(f"stopping or already stopped but tried to add new task.")
|
|
return
|
|
on_error = on_error or self.on_error
|
|
task_ = TaskThread.Task(task, on_success, on_done, on_error, cancel=cancel)
|
|
self.tasks.put(task_)
|
|
|
|
def run(self):
|
|
while True:
|
|
if self._stopping:
|
|
break
|
|
task = self.tasks.get() # type: TaskThread.Task
|
|
self._cur_task = task
|
|
if not task or self._stopping:
|
|
break
|
|
try:
|
|
result = task.task()
|
|
self.doneSig.emit(result, task.cb_done, task.cb_success)
|
|
except BaseException:
|
|
self.doneSig.emit(sys.exc_info(), task.cb_done, task.cb_error)
|
|
|
|
def on_done(self, result, cb_done, cb_result):
|
|
# This runs in the parent's thread.
|
|
if cb_done:
|
|
cb_done()
|
|
if cb_result:
|
|
cb_result(result)
|
|
|
|
def stop(self):
|
|
self._stopping = True
|
|
# try to cancel currently running task now.
|
|
# if the task does not implement "cancel", we will have to wait until it finishes.
|
|
task = self._cur_task
|
|
if task and task.cancel:
|
|
task.cancel()
|
|
# cancel the remaining tasks in the queue
|
|
while True:
|
|
try:
|
|
task = self.tasks.get_nowait()
|
|
except queue.Empty:
|
|
break
|
|
if task and task.cancel:
|
|
task.cancel()
|
|
self.tasks.put(None) # in case the thread is still waiting on the queue
|
|
self.exit()
|
|
self.wait()
|
|
|
|
|
|
class ColorSchemeItem:
|
|
def __init__(self, fg_color, bg_color):
|
|
self.colors = (fg_color, bg_color)
|
|
|
|
def _get_color(self, background):
|
|
return self.colors[(int(background) + int(ColorScheme.dark_scheme)) % 2]
|
|
|
|
def as_stylesheet(self, background=False):
|
|
css_prefix = "background-" if background else ""
|
|
color = self._get_color(background)
|
|
return "QWidget {{ {}color:{}; }}".format(css_prefix, color)
|
|
|
|
def as_color(self, background=False):
|
|
color = self._get_color(background)
|
|
return QColor(color)
|
|
|
|
|
|
class ColorScheme:
|
|
dark_scheme = False
|
|
|
|
GREEN = ColorSchemeItem("#117c11", "#8af296")
|
|
YELLOW = ColorSchemeItem("#897b2a", "#ffff00")
|
|
RED = ColorSchemeItem("#7c1111", "#f18c8c")
|
|
BLUE = ColorSchemeItem("#123b7c", "#8cb3f2")
|
|
LIGHTBLUE = ColorSchemeItem("black", "#d0f0ff")
|
|
DEFAULT = ColorSchemeItem("black", "white")
|
|
GRAY = ColorSchemeItem("gray", "gray")
|
|
|
|
@staticmethod
|
|
def has_dark_background(widget):
|
|
brightness = sum(widget.palette().color(QPalette.ColorRole.Window).getRgb()[0:3])
|
|
return brightness < (255*3/2)
|
|
|
|
@staticmethod
|
|
def update_from_widget(widget, force_dark=False):
|
|
ColorScheme.dark_scheme = bool(force_dark or ColorScheme.has_dark_background(widget))
|
|
|
|
|
|
class AcceptFileDragDrop:
|
|
def __init__(self, file_type=""):
|
|
assert isinstance(self, QWidget)
|
|
self.setAcceptDrops(True)
|
|
self.file_type = file_type
|
|
|
|
def validateEvent(self, event):
|
|
if not event.mimeData().hasUrls():
|
|
event.ignore()
|
|
return False
|
|
for url in event.mimeData().urls():
|
|
if not url.toLocalFile().endswith(self.file_type):
|
|
event.ignore()
|
|
return False
|
|
event.accept()
|
|
return True
|
|
|
|
def dragEnterEvent(self, event):
|
|
self.validateEvent(event)
|
|
|
|
def dragMoveEvent(self, event):
|
|
if self.validateEvent(event):
|
|
event.setDropAction(Qt.DropAction.CopyAction)
|
|
|
|
def dropEvent(self, event):
|
|
if self.validateEvent(event):
|
|
for url in event.mimeData().urls():
|
|
self.onFileAdded(url.toLocalFile())
|
|
|
|
def onFileAdded(self, fn):
|
|
raise NotImplementedError()
|
|
|
|
|
|
def import_meta_gui(electrum_window: 'ElectrumWindow', title, importer, on_success):
|
|
filter_ = "JSON (*.json);;All files (*)"
|
|
filename = getOpenFileName(
|
|
parent=electrum_window,
|
|
title=_("Open {} file").format(title),
|
|
filter=filter_,
|
|
config=electrum_window.config,
|
|
)
|
|
if not filename:
|
|
return
|
|
try:
|
|
importer(filename)
|
|
except FileImportFailed as e:
|
|
electrum_window.show_critical(str(e))
|
|
else:
|
|
electrum_window.show_message(_("Your {} were successfully imported").format(title))
|
|
on_success()
|
|
|
|
|
|
def export_meta_gui(electrum_window: 'ElectrumWindow', title, exporter):
|
|
filter_ = "JSON (*.json);;All files (*)"
|
|
filename = getSaveFileName(
|
|
parent=electrum_window,
|
|
title=_("Select file to save your {}").format(title),
|
|
filename='electrum_{}.json'.format(title),
|
|
filter=filter_,
|
|
config=electrum_window.config,
|
|
)
|
|
if not filename:
|
|
return
|
|
try:
|
|
exporter(filename)
|
|
except FileExportFailed as e:
|
|
electrum_window.show_critical(str(e))
|
|
else:
|
|
electrum_window.show_message(_("Your {0} were exported to '{1}'")
|
|
.format(title, str(filename)))
|
|
|
|
|
|
def getOpenFileName(*, parent, title, filter="", config: 'SimpleConfig') -> Optional[str]:
|
|
"""Custom wrapper for getOpenFileName that remembers the path selected by the user."""
|
|
directory = config.IO_DIRECTORY
|
|
fileName, __ = QFileDialog.getOpenFileName(parent, title, directory, filter)
|
|
if fileName and directory != os.path.dirname(fileName):
|
|
config.IO_DIRECTORY = os.path.dirname(fileName)
|
|
return fileName
|
|
|
|
|
|
def getSaveFileName(
|
|
*,
|
|
parent,
|
|
title,
|
|
filename,
|
|
filter="",
|
|
default_extension: str = None,
|
|
default_filter: str = None,
|
|
config: 'SimpleConfig',
|
|
) -> Optional[str]:
|
|
"""Custom wrapper for getSaveFileName that remembers the path selected by the user."""
|
|
directory = config.IO_DIRECTORY
|
|
path = os.path.join(directory, filename)
|
|
|
|
file_dialog = QFileDialog(parent, title, path, filter)
|
|
file_dialog.setAcceptMode(QFileDialog.AcceptMode.AcceptSave)
|
|
if default_extension:
|
|
# note: on MacOS, the selected filter's first extension seems to have priority over this...
|
|
file_dialog.setDefaultSuffix(default_extension)
|
|
if default_filter:
|
|
assert default_filter in filter, f"default_filter={default_filter!r} does not appear in filter={filter!r}"
|
|
file_dialog.selectNameFilter(default_filter)
|
|
if file_dialog.exec() != QDialog.DialogCode.Accepted:
|
|
return None
|
|
|
|
selected_path = file_dialog.selectedFiles()[0]
|
|
if selected_path and directory != os.path.dirname(selected_path):
|
|
config.IO_DIRECTORY = os.path.dirname(selected_path)
|
|
return selected_path
|
|
|
|
|
|
def icon_path(icon_basename: str):
|
|
return resource_path('gui', 'icons', icon_basename)
|
|
|
|
def internal_plugin_icon_path(plugin_name, icon_basename: str):
|
|
return resource_path('plugins', plugin_name, icon_basename)
|
|
|
|
|
|
@lru_cache(maxsize=1000)
|
|
def read_QIcon(icon_basename: str) -> QIcon:
|
|
return QIcon(icon_path(icon_basename))
|
|
|
|
def read_QPixmap_from_bytes(b: bytes) -> QPixmap:
|
|
qp = QPixmap()
|
|
qp.loadFromData(b)
|
|
return qp
|
|
|
|
def read_QIcon_from_bytes(b: bytes) -> QIcon:
|
|
qp = read_QPixmap_from_bytes(b)
|
|
return QIcon(qp)
|
|
|
|
|
|
class IconLabel(QWidget):
|
|
HorizontalSpacing = 2
|
|
def __init__(self, *, text='', final_stretch=True, reverse=False, hide_if_empty=False):
|
|
super(QWidget, self).__init__()
|
|
self.hide_if_empty = hide_if_empty
|
|
size = max(16, font_height())
|
|
self.icon_size = QSize(size, size)
|
|
layout = QHBoxLayout()
|
|
layout.setContentsMargins(0, 0, 0, 0)
|
|
self.setLayout(layout)
|
|
self.icon = QLabel()
|
|
self.label = QLabel(text)
|
|
self.label.setTextInteractionFlags(Qt.TextInteractionFlag.TextSelectableByMouse)
|
|
layout.addWidget(self.icon if reverse else self.label)
|
|
layout.addSpacing(self.HorizontalSpacing)
|
|
layout.addWidget(self.label if reverse else self.icon)
|
|
if final_stretch:
|
|
layout.addStretch()
|
|
self.setText(text)
|
|
|
|
def setText(self, text):
|
|
self.label.setText(text)
|
|
if self.hide_if_empty:
|
|
self.setVisible(bool(text))
|
|
|
|
def setIcon(self, icon):
|
|
self.icon.setPixmap(icon.pixmap(self.icon_size))
|
|
self.icon.repaint() # macOS hack for #6269
|
|
|
|
|
|
def char_width_in_lineedit() -> int:
|
|
char_width = QFontMetrics(QLineEdit().font()).averageCharWidth()
|
|
# 'averageCharWidth' seems to underestimate on Windows, hence 'max()'
|
|
return max(9, char_width)
|
|
|
|
|
|
def font_height(widget: QWidget = None) -> int:
|
|
if widget is None:
|
|
widget = QLabel()
|
|
return QFontMetrics(widget.font()).height()
|
|
|
|
|
|
def webopen(url: str):
|
|
if sys.platform == 'linux' and os.environ.get('APPIMAGE'):
|
|
# When on Linux webbrowser.open can fail in AppImage because it can't find the correct libdbus.
|
|
# We just fork the process and unset LD_LIBRARY_PATH before opening the URL.
|
|
# See #5425
|
|
if os.fork() == 0:
|
|
del os.environ['LD_LIBRARY_PATH']
|
|
webbrowser.open(url)
|
|
os._exit(0)
|
|
else:
|
|
webbrowser.open(url)
|
|
|
|
|
|
class FixedAspectRatioLayout(QLayout):
|
|
def __init__(self, parent: QWidget = None, aspect_ratio: float = 1.0):
|
|
super().__init__(parent)
|
|
self.aspect_ratio = aspect_ratio
|
|
self.items: List[QLayoutItem] = []
|
|
|
|
def set_aspect_ratio(self, aspect_ratio: float = 1.0):
|
|
self.aspect_ratio = aspect_ratio
|
|
self.update()
|
|
|
|
def addItem(self, item: QLayoutItem):
|
|
self.items.append(item)
|
|
|
|
def count(self) -> int:
|
|
return len(self.items)
|
|
|
|
def itemAt(self, index: int) -> QLayoutItem:
|
|
if index >= len(self.items):
|
|
return None
|
|
return self.items[index]
|
|
|
|
def takeAt(self, index: int) -> QLayoutItem:
|
|
if index >= len(self.items):
|
|
return None
|
|
return self.items.pop(index)
|
|
|
|
def _get_contents_margins_size(self) -> QSize:
|
|
margins = self.contentsMargins()
|
|
return QSize(margins.left() + margins.right(), margins.top() + margins.bottom())
|
|
|
|
def setGeometry(self, rect: QRect):
|
|
super().setGeometry(rect)
|
|
if not self.items:
|
|
return
|
|
|
|
contents = self.contentsRect()
|
|
if contents.height() > 0:
|
|
c_aratio = contents.width() / contents.height()
|
|
else:
|
|
c_aratio = 1
|
|
s_aratio = self.aspect_ratio
|
|
item_rect = QRect(QPoint(0, 0), QSize(
|
|
contents.width() if c_aratio < s_aratio else int(contents.height() * s_aratio),
|
|
contents.height() if c_aratio > s_aratio else int(contents.width() / s_aratio)
|
|
))
|
|
|
|
content_margins = self.contentsMargins()
|
|
free_space = contents.size() - item_rect.size()
|
|
|
|
for item in self.items:
|
|
if free_space.width() > 0 and not item.alignment() & Qt.AlignmentFlag.AlignLeft:
|
|
if item.alignment() & Qt.AlignmentFlag.AlignRight:
|
|
item_rect.moveRight(contents.width() + content_margins.right())
|
|
else:
|
|
item_rect.moveLeft(content_margins.left() + (free_space.width() // 2))
|
|
else:
|
|
item_rect.moveLeft(content_margins.left())
|
|
|
|
if free_space.height() > 0 and not item.alignment() & Qt.AlignmentFlag.AlignTop:
|
|
if item.alignment() & Qt.AlignmentFlag.AlignBottom:
|
|
item_rect.moveBottom(contents.height() + content_margins.bottom())
|
|
else:
|
|
item_rect.moveTop(content_margins.top() + (free_space.height() // 2))
|
|
else:
|
|
item_rect.moveTop(content_margins.top())
|
|
|
|
item.widget().setGeometry(item_rect)
|
|
|
|
def sizeHint(self) -> QSize:
|
|
result = QSize()
|
|
for item in self.items:
|
|
result = result.expandedTo(item.sizeHint())
|
|
return self._get_contents_margins_size() + result
|
|
|
|
def minimumSize(self) -> QSize:
|
|
result = QSize()
|
|
for item in self.items:
|
|
result = result.expandedTo(item.minimumSize())
|
|
return self._get_contents_margins_size() + result
|
|
|
|
def expandingDirections(self) -> Qt.Orientation:
|
|
return Qt.Orientation.Horizontal | Qt.Orientation.Vertical
|
|
|
|
|
|
def QColorLerp(a: QColor, b: QColor, t: float):
|
|
"""
|
|
Blends two QColors. t=0 returns a. t=1 returns b. t=0.5 returns evenly mixed.
|
|
"""
|
|
t = max(min(t, 1.0), 0.0)
|
|
i_t = 1.0 - t
|
|
return QColor(
|
|
int((a.red() * i_t) + (b.red() * t)),
|
|
int((a.green() * i_t) + (b.green() * t)),
|
|
int((a.blue() * i_t) + (b.blue() * t)),
|
|
int((a.alpha() * i_t) + (b.alpha() * t)),
|
|
)
|
|
|
|
|
|
class ImageGraphicsEffect(QObject):
|
|
"""
|
|
Applies a QGraphicsEffect to a QImage
|
|
"""
|
|
|
|
def __init__(self, parent: QObject, effect: QGraphicsEffect):
|
|
super().__init__(parent)
|
|
assert effect, 'effect must be set'
|
|
self.effect = effect
|
|
self.graphics_scene = QGraphicsScene()
|
|
self.graphics_item = QGraphicsPixmapItem()
|
|
self.graphics_item.setGraphicsEffect(effect)
|
|
self.graphics_scene.addItem(self.graphics_item)
|
|
|
|
def apply(self, image: QImage):
|
|
assert image, 'image must be set'
|
|
result = QImage(image.size(), QImage.Format.Format_ARGB32)
|
|
result.fill(Qt.GlobalColor.transparent)
|
|
painter = QPainter(result)
|
|
self.graphics_item.setPixmap(QPixmap.fromImage(image))
|
|
self.graphics_scene.render(painter)
|
|
self.graphics_item.setPixmap(QPixmap())
|
|
return result
|
|
|
|
|
|
class QtEventListener(EventListener):
|
|
qt_callback_signal = QtCore.pyqtSignal(tuple)
|
|
|
|
def register_callbacks(self):
|
|
self.qt_callback_signal.connect(self.on_qt_callback_signal)
|
|
EventListener.register_callbacks(self)
|
|
|
|
def unregister_callbacks(self):
|
|
try:
|
|
self.qt_callback_signal.disconnect()
|
|
except (RuntimeError, TypeError): # wrapped Qt object might be deleted
|
|
# "TypeError: disconnect() failed between 'qt_callback_signal' and all its connections"
|
|
pass
|
|
EventListener.unregister_callbacks(self)
|
|
|
|
def on_qt_callback_signal(self, args):
|
|
func = args[0]
|
|
return func(self, *args[1:])
|
|
|
|
|
|
# decorator for members of the QtEventListener class
|
|
def qt_event_listener(func):
|
|
func = event_listener(func)
|
|
|
|
@wraps(func)
|
|
def decorator(self, *args):
|
|
self.qt_callback_signal.emit( (func,) + args)
|
|
return decorator
|
|
|
|
def insert_spaces(text: str, every_chars: int) -> str:
|
|
'''Insert spaces at every Nth character to allow for WordWrap'''
|
|
return ' '.join(text[i:i+every_chars] for i in range(0, len(text), every_chars))
|
|
|
|
class _ABCQObjectMeta(type(QObject), ABCMeta): pass
|
|
class _ABCQWidgetMeta(type(QWidget), ABCMeta): pass
|
|
class AbstractQObject(QObject, ABC, metaclass=_ABCQObjectMeta): pass
|
|
class AbstractQWidget(QWidget, ABC, metaclass=_ABCQWidgetMeta): pass
|
|
|
|
|
|
if __name__ == "__main__":
|
|
app = QApplication([])
|
|
t = WaitingDialog(None, 'testing ...', lambda: [time.sleep(1)], lambda x: QMessageBox.information(None, 'done', "done"))
|
|
t.start()
|
|
app.exec()
|