Source code for pyrocko.gui.util

# http://pyrocko.org - GPLv3
#
# The Pyrocko Developers, 21st Century
# ---|P------/S----------~Lg----------
from __future__ import absolute_import, print_function

import sys
import math
import time
import numpy as num
import logging

from .qt_compat import qc, qg, qw, use_pyqt5

from .marker import Marker, PhaseMarker, EventMarker  # noqa
from .marker import MarkerParseError, MarkerOneNSLCRequired  # noqa
from .marker import load_markers, save_markers  # noqa
from pyrocko import plot


if use_pyqt5:
    try:
        from PyQt5.QtWebEngineWidgets import QWebEngineView as WebView
    except (ImportError) as e:
        print(e)
        from PyQt5.QtWebKitWidgets import QWebView as WebView

else:
    from PyQt4.QtWebKit import QWebView as WebView


if sys.version_info > (3,):
    buffer = memoryview


logger = logging.getLogger('pyrocko.gui.util')


def make_QPolygonF(xdata, ydata):
    assert len(xdata) == len(ydata)
    qpoints = qg.QPolygonF(len(ydata))
    vptr = qpoints.data()
    vptr.setsize(len(ydata)*8*2)
    aa = num.ndarray(
        shape=(len(ydata), 2),
        dtype=num.float64,
        buffer=buffer(vptr))
    aa.setflags(write=True)
    aa[:, 0] = xdata
    aa[:, 1] = ydata
    return qpoints


class Label(object):
    def __init__(
            self, p, x, y, label_str,
            label_bg=None,
            anchor='BL',
            outline=False,
            font=None,
            color=None):

        text = qg.QTextDocument()
        if font:
            text.setDefaultFont(font)
        text.setDefaultStyleSheet('span { color: %s; }' % color.name())
        text.setHtml('<span>%s</span>' % label_str)
        s = text.size()
        rect = qc.QRect(0, 0, int(s.width()), int(s.height()))
        tx, ty = x, y

        if 'B' in anchor:
            ty -= rect.height()
        if 'R' in anchor:
            tx -= rect.width()
        if 'M' in anchor:
            ty -= rect.height() // 2
        if 'C' in anchor:
            tx -= rect.width() // 2

        rect.translate(int(tx), int(ty))
        self.rect = rect
        self.text = text
        self.outline = outline
        self.label_bg = label_bg
        self.color = color
        self.p = p

    def draw(self):
        p = self.p
        rect = self.rect
        tx = rect.left()
        ty = rect.top()

        if self.outline:
            oldpen = p.pen()
            oldbrush = p.brush()
            p.setBrush(self.label_bg)
            rect.adjust(-2, 0, 2, 0)
            p.drawRect(rect)
            p.setPen(oldpen)
            p.setBrush(oldbrush)

        else:
            if self.label_bg:
                p.fillRect(rect, self.label_bg)

        p.translate(int(tx), int(ty))
        self.text.drawContents(p)
        p.translate(-int(tx), -int(ty))


def draw_label(p, x, y, label_str, label_bg, anchor='BL', outline=False):
    fm = p.fontMetrics()

    label = label_str
    rect = fm.boundingRect(label)

    tx, ty = x, y
    if 'T' in anchor:
        ty += rect.height()
    if 'R' in anchor:
        tx -= rect.width()
    if 'M' in anchor:
        ty += rect.height() // 2
    if 'C' in anchor:
        tx -= rect.width() // 2

    rect.translate(int(tx), int(ty))
    if outline:
        oldpen = p.pen()
        oldbrush = p.brush()
        p.setBrush(label_bg)
        rect.adjust(-2, 0, 2, 0)
        p.drawRect(rect)
        p.setPen(oldpen)
        p.setBrush(oldbrush)

    else:
        p.fillRect(rect, label_bg)

    p.drawText(int(tx), int(ty), label)


def get_err_palette():
    err_palette = qg.QPalette()
    err_palette.setColor(qg.QPalette.Base, qg.QColor(255, 200, 200))
    return err_palette


[docs]class MySlider(qw.QSlider):
[docs] def wheelEvent(self, ev): ev.ignore()
[docs] def keyPressEvent(self, ev): ev.ignore()
[docs]class MyValueEdit(qw.QLineEdit): edited = qc.pyqtSignal(float) def __init__( self, low_is_none=False, high_is_none=False, low_is_zero=False, *args, **kwargs): qw.QLineEdit.__init__(self, *args, **kwargs) self.value = 0. self.mi = 0. self.ma = 1. self.low_is_none = low_is_none self.high_is_none = high_is_none self.low_is_zero = low_is_zero self.editingFinished.connect( self.myEditingFinished) self.lock = False def setRange(self, mi, ma): self.mi = mi self.ma = ma def setValue(self, value): if not self.lock: self.value = value self.setPalette(qw.QApplication.palette()) self.adjust_text() def myEditingFinished(self): try: t = str(self.text()).strip() if self.low_is_none and t in ('off', 'below'): value = self.mi elif self.high_is_none and t in ('off', 'above'): value = self.ma elif self.low_is_zero and float(t) == 0.0: value = self.mi else: value = float(t) if not (self.mi <= value <= self.ma): raise Exception("out of range") if value != self.value: self.value = value self.lock = True self.edited.emit(value) self.setPalette(qw.QApplication.palette()) except Exception: self.setPalette(get_err_palette()) self.lock = False def adjust_text(self): t = ('%8.5g' % self.value).strip() if self.low_is_zero and self.value == self.mi: t = '0' if self.low_is_none and self.value == self.mi: if self.high_is_none: t = 'below' else: t = 'off' if self.high_is_none and self.value == self.ma: if self.low_is_none: t = 'above' else: t = 'off' if t in ('off', 'below', 'above'): self.setStyleSheet("font-style: italic;") else: self.setStyleSheet(None) self.setText(t)
[docs]class ValControl(qc.QObject): valchange = qc.pyqtSignal(object, int) def __init__( self, low_is_none=False, high_is_none=False, low_is_zero=False, type=float, *args): qc.QObject.__init__(self, *args) self.lname = qw.QLabel("name") self.lname.setSizePolicy( qw.QSizePolicy(qw.QSizePolicy.Minimum, qw.QSizePolicy.Minimum)) self.lvalue = MyValueEdit( low_is_none=low_is_none, high_is_none=high_is_none, low_is_zero=low_is_zero) self.lvalue.setFixedWidth(80) self.lvalue.setAlignment(qc.Qt.AlignRight) self.slider = MySlider(qc.Qt.Horizontal) self.slider.setSizePolicy( qw.QSizePolicy(qw.QSizePolicy.Expanding, qw.QSizePolicy.Minimum)) self.slider.setMaximum(10000) self.slider.setSingleStep(100) self.slider.setPageStep(1000) self.slider.setTickPosition(qw.QSlider.NoTicks) self.slider.setFocusPolicy(qc.Qt.ClickFocus) self.low_is_none = low_is_none self.high_is_none = high_is_none self.low_is_zero = low_is_zero self.slider.valueChanged.connect( self.slided) self.lvalue.edited.connect( self.edited) self.type = type self.mute = False def widgets(self): return self.lname, self.lvalue, self.slider def s2v(self, svalue): if self.ma == 0 or self.mi == 0: return 0 a = math.log(self.ma/self.mi) / 10000. value = self.mi*math.exp(a*svalue) value = self.type(value) return value def v2s(self, value): value = self.type(value) if value == 0 or self.mi == 0: return 0 a = math.log(self.ma/self.mi) / 10000. return int(round(math.log(value/self.mi) / a)) def setup(self, name, mi, ma, cur, ind): self.lname.setText(name) self.mi = mi self.ma = ma self.ind = ind self.lvalue.setRange(self.s2v(0), self.s2v(10000)) self.set_value(cur) def set_range(self, mi, ma): if self.mi == mi and self.ma == ma: return vput = None if self.cursl == 0: vput = mi if self.cursl == 10000: vput = ma self.mi = mi self.ma = ma self.lvalue.setRange(self.s2v(0), self.s2v(10000)) if vput is not None: self.set_value(vput) else: if self.cur < mi: self.set_value(mi) if self.cur > ma: self.set_value(ma) def set_value(self, cur): if cur is None: if self.low_is_none: cur = self.mi elif self.high_is_none: cur = self.ma if cur == 0.0: if self.low_is_zero: cur = self.mi self.mute = True self.cur = cur self.cursl = self.v2s(cur) self.slider.blockSignals(True) self.slider.setValue(self.cursl) self.slider.blockSignals(False) self.lvalue.blockSignals(True) if self.cursl in (0, 10000): self.lvalue.setValue(self.s2v(self.cursl)) else: self.lvalue.setValue(self.cur) self.lvalue.blockSignals(False) self.mute = False def set_tracking(self, tracking): self.slider.setTracking(tracking) def get_value(self): return self.cur def slided(self, val): if self.cursl != val: self.cursl = val cur = self.s2v(self.cursl) if cur != self.cur: self.cur = cur self.lvalue.blockSignals(True) self.lvalue.setValue(self.cur) self.lvalue.blockSignals(False) self.fire_valchange() def edited(self, val): if self.cur != val: self.cur = val cursl = self.v2s(val) if (cursl != self.cursl): self.slider.blockSignals(True) self.slider.setValue(cursl) self.slider.blockSignals(False) self.cursl = cursl self.fire_valchange() def fire_valchange(self): if self.mute: return cur = self.cur if self.cursl == 0: if self.low_is_none: cur = None elif self.low_is_zero: cur = 0.0 if self.cursl == 10000 and self.high_is_none: cur = None self.valchange.emit(cur, int(self.ind))
[docs]class LinValControl(ValControl): def s2v(self, svalue): value = svalue/10000. * (self.ma-self.mi) + self.mi value = self.type(value) return value def v2s(self, value): value = self.type(value) if self.ma == self.mi: return 0 return int(round((value-self.mi)/(self.ma-self.mi) * 10000.))
class Progressbar(object): def __init__(self, parent, name, can_abort=True): self.parent = parent self.name = name self.label = qw.QLabel(name, parent) self.pbar = qw.QProgressBar(parent) self.aborted = False self.time_last_update = 0. if can_abort: self.abort_button = qw.QPushButton('Abort', parent) self.abort_button.clicked.connect( self.abort) else: self.abort_button = None def widgets(self): widgets = [self.label, self.bar()] if self.abort_button: widgets.append(self.abort_button) return widgets def bar(self): return self.pbar def abort(self): self.aborted = True
[docs]class Progressbars(qw.QFrame): def __init__(self, parent): qw.QFrame.__init__(self, parent) self.layout = qw.QGridLayout() self.setLayout(self.layout) self.bars = {} self.start_times = {} self.hide() def set_status(self, name, value, can_abort=True): value = int(round(value)) now = time.time() if name not in self.start_times: self.start_times[name] = now return False else: if now < self.start_times[name] + 1.0: if value == 100: del self.start_times[name] return False self.start_times.get(name, 0.0) if name not in self.bars: if value == 100: return False self.bars[name] = Progressbar(self, name, can_abort=can_abort) self.make_layout() bar = self.bars[name] if bar.time_last_update < now - 0.1 or value == 100: bar.bar().setValue(value) bar.time_last_update = now if value == 100: del self.bars[name] del self.start_times[name] self.make_layout() for w in bar.widgets(): w.setParent(None) return bar.aborted def make_layout(self): while True: c = self.layout.takeAt(0) if c is None: break for ibar, bar in enumerate(self.bars.values()): for iw, w in enumerate(bar.widgets()): self.layout.addWidget(w, ibar, iw) if not self.bars: self.hide() else: self.show()
def tohex(c): return '%02x%02x%02x' % c def to01(c): return c[0]/255., c[1]/255., c[2]/255. def beautify_axes(axes): try: from cycler import cycler axes.set_prop_cycle( cycler('color', [to01(x) for x in plot.graph_colors])) except (ImportError, KeyError): axes.set_color_cycle(list(map(to01, plot.graph_colors))) xa = axes.get_xaxis() ya = axes.get_yaxis() for attr in ('labelpad', 'LABELPAD'): if hasattr(xa, attr): setattr(xa, attr, xa.get_label().get_fontsize()) setattr(ya, attr, ya.get_label().get_fontsize()) break
[docs]class FigureFrame(qw.QFrame): def __init__(self, parent=None): qw.QFrame.__init__(self, parent) # bgrgb = self.palette().color(qw.QPalette.Window).getRgb()[:3] fgcolor = plot.tango_colors['aluminium5'] dpi = 0.5*(self.logicalDpiX() + self.logicalDpiY()) font = qg.QFont() font.setBold(True) fontsize = font.pointSize() import matplotlib matplotlib.rcdefaults() if use_pyqt5: try: matplotlib.rcParams['backend'] = 'Qt5Agg' except ValueError: matplotlib.rcParams['backend'] = 'Qt4Agg' else: matplotlib.rcParams['backend'] = 'Qt4Agg' matplotlib.rc('xtick', direction='out', labelsize=fontsize) matplotlib.rc('ytick', direction='out', labelsize=fontsize) matplotlib.rc('xtick.major', size=8, width=1) matplotlib.rc('xtick.minor', size=4, width=1) matplotlib.rc('ytick.major', size=8, width=1) matplotlib.rc('ytick.minor', size=4, width=1) matplotlib.rc('figure', facecolor='white', edgecolor=tohex(fgcolor)) matplotlib.rc( 'font', family='sans-serif', weight='bold', size=fontsize, **{'sans-serif': [ font.family(), 'DejaVu Sans', 'Bitstream Vera Sans', 'Lucida Grande', 'Verdana', 'Geneva', 'Lucid', 'Arial', 'Helvetica']}) matplotlib.rc('legend', fontsize=fontsize) matplotlib.rc('text', color=tohex(fgcolor)) matplotlib.rc('xtick', color=tohex(fgcolor)) matplotlib.rc('ytick', color=tohex(fgcolor)) matplotlib.rc('figure.subplot', bottom=0.15) matplotlib.rc('axes', linewidth=1.0, unicode_minus=False) matplotlib.rc( 'axes', facecolor='white', edgecolor=tohex(fgcolor), labelcolor=tohex(fgcolor)) try: from cycler import cycler matplotlib.rc( 'axes', prop_cycle=cycler( 'color', [to01(x) for x in plot.graph_colors])) except (ImportError, KeyError): try: matplotlib.rc('axes', color_cycle=[ to01(x) for x in plot.graph_colors]) except KeyError: pass try: matplotlib.rc('axes', labelsize=fontsize) except KeyError: pass try: matplotlib.rc('axes', labelweight='bold') except KeyError: pass from matplotlib.figure import Figure if use_pyqt5: from matplotlib.backends.backend_qt5agg import \ NavigationToolbar2QT as NavigationToolbar from matplotlib.backends.backend_qt5agg \ import FigureCanvasQTAgg as FigureCanvas else: try: from matplotlib.backends.backend_qt4agg import \ NavigationToolbar2QTAgg as NavigationToolbar except ImportError: from matplotlib.backends.backend_qt4agg import \ NavigationToolbar2QT as NavigationToolbar from matplotlib.backends.backend_qt4agg \ import FigureCanvasQTAgg as FigureCanvas layout = qw.QGridLayout() layout.setContentsMargins(0, 0, 0, 0) layout.setSpacing(0) self.setLayout(layout) self.figure = Figure(dpi=dpi) self.canvas = FigureCanvas(self.figure) self.canvas.setParent(self) self.toolbar = NavigationToolbar(self.canvas, self) layout.addWidget(self.toolbar, 0, 0) layout.addWidget(self.canvas, 1, 0) self.closed = False def gca(self): axes = self.figure.gca() beautify_axes(axes) return axes def gcf(self): return self.figure
[docs] def draw(self): ''' Draw with AGG, then queue for Qt update. ''' self.canvas.draw()
[docs] def closeEvent(self, ev): self.closed = True
[docs]class WebKitFrame(qw.QFrame): def __init__(self, url=None, parent=None): qw.QFrame.__init__(self, parent) layout = qw.QGridLayout() layout.setContentsMargins(0, 0, 0, 0) layout.setSpacing(0) self.setLayout(layout) self.web_widget = WebView() layout.addWidget(self.web_widget, 0, 0) if url: self.web_widget.load(qc.QUrl(url))
[docs]class VTKFrame(qw.QFrame): def __init__(self, actors=None, parent=None): import vtk from vtk.qt4.QVTKRenderWindowInteractor import \ QVTKRenderWindowInteractor qw.QFrame.__init__(self, parent) layout = qw.QGridLayout() layout.setContentsMargins(0, 0, 0, 0) layout.setSpacing(0) self.setLayout(layout) self.vtk_widget = QVTKRenderWindowInteractor(self) layout.addWidget(self.vtk_widget, 0, 0) self.renderer = vtk.vtkRenderer() self.vtk_widget.GetRenderWindow().AddRenderer(self.renderer) self.iren = self.vtk_widget.GetRenderWindow().GetInteractor() if actors: for a in actors: self.renderer.AddActor(a) def init(self): self.iren.Initialize() def add_actor(self, actor): self.renderer.AddActor(actor)
[docs]class PixmapFrame(qw.QLabel): def __init__(self, filename=None, parent=None): qw.QLabel.__init__(self, parent) self.setAlignment(qc.Qt.AlignCenter) self.setContentsMargins(0, 0, 0, 0) self.menu = qw.QMenu(self) action = qw.QAction('Save as', self.menu) action.triggered.connect(self.save_pixmap) self.menu.addAction(action) if filename: self.load_pixmap(filename)
[docs] def contextMenuEvent(self, event): self.menu.popup(qg.QCursor.pos())
def load_pixmap(self, filename): self.pixmap = qg.QPixmap(filename) self.setPixmap(self.pixmap) def save_pixmap(self, filename=None): if not filename: filename, _ = qw.QFileDialog.getSaveFileName( self.parent(), caption='save as') self.pixmap.save(filename)