class ImageController(QFrame):
"""An ImageController is a widget for controlling the display of one image.
It can emit the following signals from the image:
raise raise button was clicked
center center-on-image option was selected
unload unload option was selected
slice image slice has changed, need to redraw (emitted by SkyImage automatically)
repaint image display range or colormap has changed, need to redraw (emitted by SkyImage automatically)
"""
def __init__(self, image, parent, imgman, name=None, save=False):
QFrame.__init__(self, parent)
self.setFrameStyle(QFrame.StyledPanel | QFrame.Raised)
# init state
self.image = image
self._imgman = imgman
self._currier = PersistentCurrier()
self._control_dialog = None
# create widgets
self._lo = lo = QHBoxLayout(self)
lo.setContentsMargins(0, 0, 0, 0)
lo.setSpacing(2)
# raise button
self._wraise = QToolButton(self)
lo.addWidget(self._wraise)
self._wraise.setIcon(pixmaps.raise_up.icon())
self._wraise.setAutoRaise(True)
self._can_raise = False
QObject.connect(self._wraise, SIGNAL("clicked()"), self._raiseButtonPressed)
self._wraise.setToolTip("""<P>Click here to raise this image above other images. Hold the button down briefly to
show a menu of image operations.</P>""")
# center label
self._wcenter = QLabel(self)
self._wcenter.setPixmap(pixmaps.center_image.pm())
self._wcenter.setToolTip(
"<P>The plot is currently centered on (the reference pixel %d,%d) of this image.</P>" % self.image.referencePixel())
lo.addWidget(self._wcenter)
# name/filename label
self.name = image.name
self._wlabel = QLabel(self.name, self)
self._number = 0
self.setName(self.name)
self._wlabel.setToolTip("%s %s" % (image.filename, "\u00D7".join(map(str, image.data().shape))))
lo.addWidget(self._wlabel, 1)
# if 'save' is specified, create a "save" button
if save:
self._wsave = QToolButton(self)
lo.addWidget(self._wsave)
self._wsave.setText("save")
self._wsave.setAutoRaise(True)
self._save_dir = save if isinstance(save, str) else "."
QObject.connect(self._wsave, SIGNAL("clicked()"), self._saveImage)
self._wsave.setToolTip("""<P>Click here to write this image to a FITS file.</P>""")
# render control
dprint(2, "creating RenderControl")
self._rc = RenderControl(image, self)
dprint(2, "done")
# selectors for extra axes
self._wslicers = []
curslice = self._rc.currentSlice(); # this may be loaded from config, so not necessarily 0
for iextra, axisname, labels in self._rc.slicedAxes():
if axisname.upper() not in ["STOKES", "COMPLEX"]:
lbl = QLabel("%s:" % axisname, self)
lo.addWidget(lbl)
else:
lbl = None
slicer = QComboBox(self)
self._wslicers.append(slicer)
lo.addWidget(slicer)
slicer.addItems(labels)
slicer.setToolTip("""<P>Selects current slice along the %s axis.</P>""" % axisname)
slicer.setCurrentIndex(curslice[iextra])
QObject.connect(slicer, SIGNAL("activated(int)"), self._currier.curry(self._rc.changeSlice, iextra))
# min/max display ranges
lo.addSpacing(5)
self._wrangelbl = QLabel(self)
lo.addWidget(self._wrangelbl)
self._minmaxvalidator = FloatValidator(self)
self._wmin = QLineEdit(self)
self._wmax = QLineEdit(self)
width = self._wmin.fontMetrics().width("1.234567e-05")
for w in self._wmin, self._wmax:
lo.addWidget(w, 0)
w.setValidator(self._minmaxvalidator)
w.setMaximumWidth(width)
w.setMinimumWidth(width)
QObject.connect(w, SIGNAL("editingFinished()"), self._changeDisplayRange)
# full-range button
self._wfullrange = QToolButton(self)
lo.addWidget(self._wfullrange, 0)
self._wfullrange.setIcon(pixmaps.zoom_range.icon())
self._wfullrange.setAutoRaise(True)
QObject.connect(self._wfullrange, SIGNAL("clicked()"), self.renderControl().resetSubsetDisplayRange)
rangemenu = QMenu(self)
rangemenu.addAction(pixmaps.full_range.icon(), "Full subset", self.renderControl().resetSubsetDisplayRange)
for percent in (99.99, 99.9, 99.5, 99, 98, 95):
rangemenu.addAction("%g%%" % percent, self._currier.curry(self._changeDisplayRangeToPercent, percent))
self._wfullrange.setPopupMode(QToolButton.DelayedPopup)
self._wfullrange.setMenu(rangemenu)
# update widgets from current display range
self._updateDisplayRange(*self._rc.displayRange())
# lock button
self._wlock = QToolButton(self)
self._wlock.setIcon(pixmaps.unlocked.icon())
self._wlock.setAutoRaise(True)
self._wlock.setToolTip("""<P>Click to lock or unlock the intensity range. When the intensity range is locked across multiple images, any changes in the intensity
range of one are propagated to the others. Hold the button down briefly for additional options.</P>""")
lo.addWidget(self._wlock)
QObject.connect(self._wlock, SIGNAL("clicked()"), self._toggleDisplayRangeLock)
QObject.connect(self.renderControl(), SIGNAL("displayRangeLocked"), self._setDisplayRangeLock)
QObject.connect(self.renderControl(), SIGNAL("dataSubsetChanged"), self._dataSubsetChanged)
lockmenu = QMenu(self)
lockmenu.addAction(pixmaps.locked.icon(), "Lock all to this",
self._currier.curry(imgman.lockAllDisplayRanges, self.renderControl()))
lockmenu.addAction(pixmaps.unlocked.icon(), "Unlock all", imgman.unlockAllDisplayRanges)
self._wlock.setPopupMode(QToolButton.DelayedPopup)
self._wlock.setMenu(lockmenu)
self._setDisplayRangeLock(self.renderControl().isDisplayRangeLocked())
# dialog button
self._wshowdialog = QToolButton(self)
lo.addWidget(self._wshowdialog)
self._wshowdialog.setIcon(pixmaps.colours.icon())
self._wshowdialog.setAutoRaise(True)
self._wshowdialog.setToolTip("""<P>Click for colourmap and intensity policy options.</P>""")
QObject.connect(self._wshowdialog, SIGNAL("clicked()"), self.showRenderControls)
tooltip = """<P>You can change the currently displayed intensity range by entering low and high limits here.</P>
<TABLE>
<TR><TD><NOBR>Image min:</NOBR></TD><TD>%g</TD><TD>max:</TD><TD>%g</TD></TR>
</TABLE>""" % self.image.imageMinMax()
for w in self._wmin, self._wmax, self._wrangelbl:
w.setToolTip(tooltip)
# create image operations menu
self._menu = QMenu(self.name, self)
self._qa_raise = self._menu.addAction(pixmaps.raise_up.icon(), "Raise image",
self._currier.curry(self.image.emit, SIGNAL("raise")))
self._qa_center = self._menu.addAction(pixmaps.center_image.icon(), "Center plot on image",
self._currier.curry(self.image.emit, SIGNAL("center")))
self._qa_show_rc = self._menu.addAction(pixmaps.colours.icon(), "Colours && Intensities...",
self.showRenderControls)
if save:
self._qa_save = self._menu.addAction("Save image...", self._saveImage)
self._menu.addAction("Export image to PNG file...", self._exportImageToPNG)
self._export_png_dialog = None
self._menu.addAction("Unload image", self._currier.curry(self.image.emit, SIGNAL("unload")))
self._wraise.setMenu(self._menu)
self._wraise.setPopupMode(QToolButton.DelayedPopup)
# connect updates from renderControl and image
self.image.connect(SIGNAL("slice"), self._updateImageSlice)
QObject.connect(self._rc, SIGNAL("displayRangeChanged"), self._updateDisplayRange)
# default plot depth of image markers
self._z_markers = None
# and the markers themselves
self._image_border = QwtPlotCurve()
self._image_label = QwtPlotMarker()
# subset markers
self._subset_pen = QPen(QColor("Light Blue"))
self._subset_border = QwtPlotCurve()
self._subset_border.setPen(self._subset_pen)
self._subset_border.setVisible(False)
self._subset_label = QwtPlotMarker()
text = QwtText("subset")
text.setColor(self._subset_pen.color())
self._subset_label.setLabel(text)
self._subset_label.setLabelAlignment(Qt.AlignRight | Qt.AlignBottom)
self._subset_label.setVisible(False)
self._setting_lmrect = False
self._all_markers = [self._image_border, self._image_label, self._subset_border, self._subset_label]
def close(self):
if self._control_dialog:
self._control_dialog.close()
self._control_dialog = None
def __del__(self):
self.close()
def __eq__(self, other):
return self is other
def renderControl(self):
return self._rc
def getMenu(self):
return self._menu
def getFilename(self):
return self.image.filename
def setName(self, name):
self.name = name
self._wlabel.setText("%s: %s" % (chr(ord('a') + self._number), self.name))
def setNumber(self, num):
self._number = num
self._menu.menuAction().setText("%s: %s" % (chr(ord('a') + self._number), self.name))
self._qa_raise.setShortcut(QKeySequence("Alt+" + chr(ord('A') + num)))
self.setName(self.name)
def getNumber(self):
return self._number
def setPlotProjection(self, proj):
self.image.setPlotProjection(proj)
sameproj = proj == self.image.projection
self._wcenter.setVisible(sameproj)
self._qa_center.setVisible(not sameproj)
if self._image_border:
(l0, l1), (m0, m1) = self.image.getExtents()
path = numpy.array([l0, l0, l1, l1, l0]), numpy.array([m0, m1, m1, m0, m0])
self._image_border.setData(*path)
if self._image_label:
self._image_label.setValue(path[0][2], path[1][2])
def addPlotBorder(self, border_pen, label, label_color=None, bg_brush=None):
# make plot items for image frame
# make curve for image borders
(l0, l1), (m0, m1) = self.image.getExtents()
self._border_pen = QPen(border_pen)
self._image_border.show()
self._image_border.setData([l0, l0, l1, l1, l0], [m0, m1, m1, m0, m0])
self._image_border.setPen(self._border_pen)
self._image_border.setZ(self.image.z() + 1 if self._z_markers is None else self._z_markers)
if label:
self._image_label.show()
self._image_label_text = text = QwtText(" %s " % label)
text.setColor(label_color)
text.setBackgroundBrush(bg_brush)
self._image_label.setValue(l1, m1)
self._image_label.setLabel(text)
self._image_label.setLabelAlignment(Qt.AlignRight | Qt.AlignVCenter)
self._image_label.setZ(self.image.z() + 2 if self._z_markers is None else self._z_markers)
def setPlotBorderStyle(self, border_color=None, label_color=None):
if border_color:
self._border_pen.setColor(border_color)
self._image_border.setPen(self._border_pen)
if label_color:
self._image_label_text.setColor(label_color)
self._image_label.setLabel(self._image_label_text)
def showPlotBorder(self, show=True):
self._image_border.setVisible(show)
self._image_label.setVisible(show)
def attachToPlot(self, plot, z_markers=None):
for item in [self.image] + self._all_markers:
if item.plot() != plot:
item.attach(plot)
def setImageVisible(self, visible):
self.image.setVisible(visible)
def showRenderControls(self):
if not self._control_dialog:
dprint(1, "creating control dialog")
self._control_dialog = ImageControlDialog(self, self._rc, self._imgman)
dprint(1, "done")
if not self._control_dialog.isVisible():
dprint(1, "showing control dialog")
self._control_dialog.show()
else:
self._control_dialog.hide()
def _changeDisplayRangeToPercent(self, percent):
if not self._control_dialog:
self._control_dialog = ImageControlDialog(self, self._rc, self._imgman)
self._control_dialog._changeDisplayRangeToPercent(percent)
def _updateDisplayRange(self, dmin, dmax):
"""Updates display range widgets."""
self._wmin.setText("%.4g" % dmin)
self._wmax.setText("%.4g" % dmax)
self._updateFullRangeIcon()
def _changeDisplayRange(self):
"""Gets display range from widgets and updates the image with it."""
try:
newrange = float(str(self._wmin.text())), float(str(self._wmax.text()))
except ValueError:
return
self._rc.setDisplayRange(*newrange)
def _dataSubsetChanged(self, subset, minmax, desc, subset_type):
"""Called when the data subset changes (or is reset)"""
# hide the subset indicator -- unless we're invoked while we're actually setting the subset itself
if not self._setting_lmrect:
self._subset = None
self._subset_border.setVisible(False)
self._subset_label.setVisible(False)
def setLMRectSubset(self, rect):
self._subset = rect
l0, m0, l1, m1 = rect.getCoords()
self._subset_border.setData([l0, l0, l1, l1, l0], [m0, m1, m1, m0, m0])
self._subset_border.setVisible(True)
self._subset_label.setValue(max(l0, l1), max(m0, m1))
self._subset_label.setVisible(True)
self._setting_lmrect = True
self.renderControl().setLMRectSubset(rect)
self._setting_lmrect = False
def currentSlice(self):
return self._rc.currentSlice()
def _updateImageSlice(self, slice):
dprint(2, slice)
for i, (iextra, name, labels) in enumerate(self._rc.slicedAxes()):
slicer = self._wslicers[i]
if slicer.currentIndex() != slice[iextra]:
dprint(3, "setting widget", i, "to", slice[iextra])
slicer.setCurrentIndex(slice[iextra])
def setMarkersZ(self, z):
self._z_markers = z
for i, elem in enumerate(self._all_markers):
elem.setZ(z + i)
def setZ(self, z, top=False, depthlabel=None, can_raise=True):
self.image.setZ(z)
if self._z_markers is None:
for i, elem in enumerate(self._all_markers):
elem.setZ(z + i + i)
# set the depth label, if any
label = "%s: %s" % (chr(ord('a') + self._number), self.name)
# label = "%s %s"%(depthlabel,self.name) if depthlabel else self.name
if top:
label = "%s: <B>%s</B>" % (chr(ord('a') + self._number), self.name)
self._wlabel.setText(label)
# set hotkey
self._qa_show_rc.setShortcut(Qt.Key_F9 if top else QKeySequence())
# set raise control
self._can_raise = can_raise
self._qa_raise.setVisible(can_raise)
self._wlock.setVisible(can_raise)
if can_raise:
self._wraise.setToolTip(
"<P>Click here to raise this image to the top. Click on the down-arrow to access the image menu.</P>")
else:
self._wraise.setToolTip("<P>Click to access the image menu.</P>")
def _raiseButtonPressed(self):
if self._can_raise:
self.image.emit(SIGNAL("raise"))
else:
self._wraise.showMenu()
def _saveImage(self):
filename = QFileDialog.getSaveFileName(self, "Save FITS file", self._save_dir,
"FITS files(*.fits *.FITS *fts *FTS)")
filename = str(filename)
if not filename:
return
busy = BusyIndicator()
self._imgman.showMessage("""Writing FITS image %s""" % filename, 3000)
QApplication.flush()
try:
self.image.save(filename)
except Exception as exc:
busy = None
traceback.print_exc()
self._imgman.showErrorMessage("""Error writing FITS image %s: %s""" % (filename, str(sys.exc_info()[1])))
return None
self.renderControl().startSavingConfig(filename)
self.setName(self.image.name)
self._qa_save.setVisible(False)
self._wsave.hide()
busy = None
def _exportImageToPNG(self, filename=None):
if not filename:
if not self._export_png_dialog:
dialog = self._export_png_dialog = QFileDialog(self, "Export image to PNG", ".", "*.png")
dialog.setDefaultSuffix("png")
dialog.setFileMode(QFileDialog.AnyFile)
dialog.setAcceptMode(QFileDialog.AcceptSave)
dialog.setModal(True)
QObject.connect(dialog, SIGNAL("filesSelected(const QStringList &)"), self._exportImageToPNG)
return self._export_png_dialog.exec_() == QDialog.Accepted
busy = BusyIndicator()
if isinstance(filename, QStringList):
filename = filename[0]
filename = str(filename)
# make QPixmap
nx, ny = self.image.imageDims()
(l0, l1), (m0, m1) = self.image.getExtents()
pixmap = QPixmap(nx, ny)
painter = QPainter(pixmap)
# use QwtPlot implementation of draw canvas, since we want to avoid caching
xmap = QwtScaleMap()
xmap.setPaintInterval(0, nx)
xmap.setScaleInterval(l1, l0)
ymap = QwtScaleMap()
ymap.setPaintInterval(ny, 0)
ymap.setScaleInterval(m0, m1)
self.image.draw(painter, xmap, ymap, pixmap.rect())
painter.end()
# save to file
try:
pixmap.save(filename, "PNG")
except Exception as exc:
self.emit(SIGNAL("showErrorMessage"), "Error writing %s: %s" % (filename, str(exc)))
return
self.emit(SIGNAL("showMessage"), "Exported image to file %s" % filename)
def _toggleDisplayRangeLock(self):
self.renderControl().lockDisplayRange(not self.renderControl().isDisplayRangeLocked())
def _setDisplayRangeLock(self, locked):
self._wlock.setIcon(pixmaps.locked.icon() if locked else pixmaps.unlocked.icon())
def _updateFullRangeIcon(self):
if self._rc.isSubsetDisplayRange():
self._wfullrange.setIcon(pixmaps.zoom_range.icon())
self._wfullrange.setToolTip(
"""<P>The current intensity range is the full range. Hold this button down briefly for additional options.</P>""")
else:
self._wfullrange.setIcon(pixmaps.full_range.icon())
self._wfullrange.setToolTip(
"""<P>Click to reset to a full intensity range. Hold the button down briefly for additional options.</P>""")
class TestPlot(QwtPlot):
def __init__(self, parent=None):
super(TestPlot, self).__init__(parent)
self.setWindowTitle("PyQwt" if USE_PYQWT5 else "PythonQwt")
self.enableAxis(self.xTop, True)
self.enableAxis(self.yRight, True)
y = np.linspace(0, 10, 500)
curve1 = QwtPlotCurve('Test Curve 1')
curve1.setData(np.sin(y), y)
curve2 = QwtPlotCurve('Test Curve 2')
curve2.setData(y**3, y)
if USE_PYQWT5:
curve2.setAxis(self.xTop, self.yRight)
else:
# PythonQwt
curve2.setAxes(self.xTop, self.yRight)
for item, col, xa, ya in ((curve1, Qt.green, self.xBottom, self.yLeft),
(curve2, Qt.red, self.xTop, self.yRight)):
if not USE_PYQWT5:
# PythonQwt
item.setOrientation(Qt.Vertical)
item.attach(self)
item.setPen(QPen(col))
for axis_id in xa, ya:
palette = self.axisWidget(axis_id).palette()
palette.setColor(QPalette.WindowText, QColor(col))
palette.setColor(QPalette.Text, QColor(col))
self.axisWidget(axis_id).setPalette(palette)
ticks_font = self.axisFont(axis_id)
self.setAxisFont(axis_id, ticks_font)
self.canvas().setFrameStyle(0) #QFrame.Panel|QFrame.Sunken)
self.plotLayout().setCanvasMargin(0)
self.axisWidget(QwtPlot.yLeft).setMargin(0)
self.axisWidget(QwtPlot.xTop).setMargin(0)
self.axisWidget(QwtPlot.yRight).setMargin(0)
self.axisWidget(QwtPlot.xBottom).setMargin(0)
self.marker = QwtPlotMarker()
self.marker.setValue(0, 5)
self.marker.attach(self)
def resizeEvent(self, event):
super(TestPlot, self).resizeEvent(event)
self.show_layout_details()
def show_layout_details(self):
text = QwtText(
"plotLayout().canvasRect():\n%r\n\n"
"canvas().geometry():\n%r\n\n"
"plotLayout().scaleRect(QwtPlot.yLeft):\n%r\n\n"
"axisWidget(QwtPlot.yLeft).geometry():\n%r\n\n"
"plotLayout().scaleRect(QwtPlot.yRight):\n%r\n\n"
"axisWidget(QwtPlot.yRight).geometry():\n%r\n\n"
"plotLayout().scaleRect(QwtPlot.xBottom):\n%r\n\n"
"axisWidget(QwtPlot.xBottom).geometry():\n%r\n\n"
"plotLayout().scaleRect(QwtPlot.xTop):\n%r\n\n"
"axisWidget(QwtPlot.xTop).geometry():\n%r\n\n" % (
self.plotLayout().canvasRect().getCoords(),
self.canvas().geometry().getCoords(),
self.plotLayout().scaleRect(QwtPlot.yLeft).getCoords(),
self.axisWidget(QwtPlot.yLeft).geometry().getCoords(),
self.plotLayout().scaleRect(QwtPlot.yRight).getCoords(),
self.axisWidget(QwtPlot.yRight).geometry().getCoords(),
self.plotLayout().scaleRect(QwtPlot.xBottom).getCoords(),
self.axisWidget(QwtPlot.xBottom).geometry().getCoords(),
self.plotLayout().scaleRect(QwtPlot.xTop).getCoords(),
self.axisWidget(QwtPlot.xTop).geometry().getCoords(),
))
text.setFont(QFont('Courier New'))
text.setColor(Qt.blue)
self.marker.setLabel(text)
class TestPlot(QwtPlot):
def __init__(self, parent=None):
super(TestPlot, self).__init__(parent)
self.setWindowTitle("PyQwt" if USE_PYQWT5 else "PythonQwt")
self.enableAxis(self.xTop, True)
self.enableAxis(self.yRight, True)
y = np.linspace(0, 10, 500)
curve1 = QwtPlotCurve('Test Curve 1')
curve1.setData(np.sin(y), y)
curve2 = QwtPlotCurve('Test Curve 2')
curve2.setData(y**3, y)
if USE_PYQWT5:
curve2.setAxis(self.xTop, self.yRight)
else:
# PythonQwt
curve2.setAxes(self.xTop, self.yRight)
for item, col, xa, ya in ((curve1, Qt.green, self.xBottom, self.yLeft),
(curve2, Qt.red, self.xTop, self.yRight)):
if not USE_PYQWT5:
# PythonQwt
item.setOrientation(Qt.Vertical)
item.attach(self)
item.setPen(QPen(col))
for axis_id in xa, ya:
palette = self.axisWidget(axis_id).palette()
palette.setColor(QPalette.WindowText, QColor(col))
palette.setColor(QPalette.Text, QColor(col))
self.axisWidget(axis_id).setPalette(palette)
ticks_font = self.axisFont(axis_id)
self.setAxisFont(axis_id, ticks_font)
self.canvas().setFrameStyle(0)#QFrame.Panel|QFrame.Sunken)
self.plotLayout().setCanvasMargin(0)
self.axisWidget(QwtPlot.yLeft).setMargin(0)
self.axisWidget(QwtPlot.xTop).setMargin(0)
self.axisWidget(QwtPlot.yRight).setMargin(0)
self.axisWidget(QwtPlot.xBottom).setMargin(0)
self.marker = QwtPlotMarker()
self.marker.setValue(0, 5)
self.marker.attach(self)
def resizeEvent(self, event):
super(TestPlot, self).resizeEvent(event)
self.show_layout_details()
def show_layout_details(self):
text = QwtText(
"plotLayout().canvasRect():\n%r\n\n"
"canvas().geometry():\n%r\n\n"
"plotLayout().scaleRect(QwtPlot.yLeft):\n%r\n\n"
"axisWidget(QwtPlot.yLeft).geometry():\n%r\n\n"
"plotLayout().scaleRect(QwtPlot.yRight):\n%r\n\n"
"axisWidget(QwtPlot.yRight).geometry():\n%r\n\n"
"plotLayout().scaleRect(QwtPlot.xBottom):\n%r\n\n"
"axisWidget(QwtPlot.xBottom).geometry():\n%r\n\n"
"plotLayout().scaleRect(QwtPlot.xTop):\n%r\n\n"
"axisWidget(QwtPlot.xTop).geometry():\n%r\n\n"
% (self.plotLayout().canvasRect().getCoords(),
self.canvas().geometry().getCoords(),
self.plotLayout().scaleRect(QwtPlot.yLeft).getCoords(),
self.axisWidget(QwtPlot.yLeft).geometry().getCoords(),
self.plotLayout().scaleRect(QwtPlot.yRight).getCoords(),
self.axisWidget(QwtPlot.yRight).geometry().getCoords(),
self.plotLayout().scaleRect(QwtPlot.xBottom).getCoords(),
self.axisWidget(QwtPlot.xBottom).geometry().getCoords(),
self.plotLayout().scaleRect(QwtPlot.xTop).getCoords(),
self.axisWidget(QwtPlot.xTop).geometry().getCoords(),
)
)
text.setFont(QFont('Courier New'))
text.setColor(Qt.blue)
self.marker.setLabel(text)