class PushSinkAdapter(QtCore.QObject):
dataReady = QtCore.Signal(['PyQt_PyObject'], name='dataReady')
def __init__(self, sink):
super(PushSinkAdapter, self).__init__()
self.sink = sink
self._time = None
self._value = None
def cb_handler(self, m):
try:
self._time = m.time()
self._value = m
self.dataReady.emit(self._time)
except Exception, e:
log.exception(e)
class OutPort(Port):
dataReady = QtCore.Signal(['PyQt_PyObject'], name='dataReady')
def __init__(self, parent, name):
super(Port, self).__init__(parent, name)
def send(self, value):
self.dataReady.emit(value)
def subscribe(self, inport):
info = inport.get_info()
if info.queued:
return self.dataReady.connect(inport.handle_receive,
QtCore.Qt.QueuedConnection)
else:
return self.dataReady.connect(inport.handle_receive)
def unsubscribe(self, inport):
raise NotImplemented
class CompleterLineEdit(QtGui.QLineEdit):
"""
"""
completionNeeded = QtCore.Signal(str)
def __init__(self, parent, delimiters, entries, entries_updater):
self.delimiters = delimiters
super(CompleterLineEdit, self).__init__(parent)
self.textChanged[str].connect(self.text_changed)
self.completer = QtGui.QCompleter(self)
self.completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
self.completer.setModel(QtGui.QStringListModel(entries,
self.completer))
self.completionNeeded.connect(self.completer.complete)
self.completer.activated[str].connect(self.complete_text)
self.completer.setWidget(self)
self._upddate_entries = True
self.editingFinished.connect(self.on_editing_finished)
self.entries_updater = entries_updater
def text_changed(self, text):
"""
"""
if self._upddate_entries and self.entries_updater:
entries = self.entries_updater()
self.completer.setModel(
QtGui.QStringListModel(entries, self.completer))
self._upddate_entries = False
all_text = unicode(text)
text = all_text[:self.cursorPosition()]
split = text.split(self.delimiters[0])
prefix = split[-1].strip()
if len(split) > 1:
self.completer.setCompletionPrefix(prefix)
self.completionNeeded.emit(prefix)
self.string = text
def complete_text(self, text):
"""
"""
cursor_pos = self.cursorPosition()
before_text = unicode(self.text())[:cursor_pos]
after_text = unicode(self.text())[cursor_pos:]
prefix_len = len(before_text.split(self.delimiters[0])[-1].strip())
if after_text.startswith(self.delimiters[1]):
self.setText(before_text[:cursor_pos - prefix_len] + text +
after_text)
else:
self.setText(before_text[:cursor_pos - prefix_len] + text +
self.delimiters[1] + after_text)
self.string = before_text[:cursor_pos - prefix_len] + text +\
self.delimiters[1] + after_text
self.setCursorPosition(cursor_pos - prefix_len + len(text) + 2)
self.textEdited.emit(self.string)
def on_editing_finished(self):
self._upddate_entries = True
def _update_entries(self, entries):
self.completer.setModel(QtGui.QStringListModel(entries,
self.completer))
class QDelimitedCompleter(QtWidgets.QCompleter):
"""A custom completer to use with QtLineCompleter, QtTextEdit.
This completer only propose completion between specified characters.
Parameters
----------
parent : QLineEdit or QTextEdit
Widget for which to provide a completion.
delimiters : tuple
Tuple of length 2 specifying the characters marking the begining end
of completion.
entries : iterable
Iterable of values used to propose completion.
entries_updaters : callable
Callable used to refresh the list of entries called once for the first
completion after the widget gained focus.
"""
# Signal emmitted to notify the completer it should propose a completion.
completionNeeded = QtCore.Signal()
def __init__(self, parent, delimiters, entries, entries_updater):
super(QDelimitedCompleter, self).__init__(parent)
self.delimiters = delimiters
if isinstance(parent, QtWidgets.QLineEdit):
self.text_getter = parent.text
self.cursor_pos = parent.cursorPosition
self.insert_text = parent.insert
parent.textChanged[str].connect(self.text_changed)
self.completionNeeded.connect(self.complete)
elif isinstance(parent, QtWidgets.QTextEdit):
parent.textChanged.connect(self.text_changed)
self.cursor_pos = lambda: parent.textCursor().position()
self.insert_text =\
lambda text: parent.textCursor().insertText(text)
self.text_getter = parent.toPlainText
self.completionNeeded.connect(self._text_edit_complete)
else:
msg = 'Parent of QtCompleter must QLineEdit or QTextEdit, not {}'
raise ValueError(msg.format(parent))
self.setCaseSensitivity(QtCore.Qt.CaseSensitive)
self.setModel(QtCore.QStringListModel(entries, self))
self.activated[str].connect(self.complete_text)
self.setWidget(parent)
self._upddate_entries = True
self._popup_active = False
self.entries_updater = entries_updater
def text_changed(self, text=None):
"""Callback handling the text being edited on the parent.
"""
if not text:
text = self.text_getter()
if self._upddate_entries and self.entries_updater:
entries = self.entries_updater()
self.setModel(QtCore.QStringListModel(entries, self))
self._upddate_entries = False
all_text = uni(text)
text = all_text[:self.cursor_pos()]
split = text.split(self.delimiters[0])
prefix = split[-1].strip()
if len(split) > 1:
self.setCompletionPrefix(prefix)
self.completionNeeded.emit()
elif self.popup().isVisible():
self.popup().hide()
def complete_text(self, completion):
"""When the user validate a completion add it to the text.
"""
cursor_pos = self.cursor_pos()
text = uni(self.text_getter())
before_text = text[:cursor_pos]
after_text = text[cursor_pos:]
prefix_len = len(before_text.split(self.delimiters[0])[-1].strip())
completion = completion[prefix_len:]
if not after_text.startswith(self.delimiters[1]):
completion += self.delimiters[1]
self.insert_text(completion)
def on_focus_gained(self):
"""Mark the entries for refreshing when the widget loses focus.
"""
self._upddate_entries = True
def _update_entries(self, entries):
"""Update the completer completion model.
"""
self.setModel(QtCore.QStringListModel(entries))
def _text_edit_complete(self):
"""Propose completion for QTextEdit.
"""
cr = self.widget().cursorRect()
popup = self.popup()
cr.setWidth(
popup.sizeHintForColumn(0) +
popup.verticalScrollBar().sizeHint().width())
self.complete(cr)
class Widget(QtCore.QObject):
destroyed = QtCore.Signal(bool)
class QtVirtualCameraWidget(QtOpenGL.QGLWidget):
ShareWidget = None
#: Fired in update() method to synchronize listeners.
sigUpdate = QtCore.Signal()
def __init__(self,
key_event_handler=None,
mouse_event_handler=None,
cam_width=1024,
cam_height=768,
cam_near=0.01,
cam_far=10.0,
camera_intrinsics=None,
parent=None):
if QtVirtualCameraWidget.ShareWidget is None:
## create a dummy widget to allow sharing objects (textures, shaders, etc) between views
QtVirtualCameraWidget.ShareWidget = QtOpenGL.QGLWidget()
QtOpenGL.QGLWidget.__init__(self, parent,
QtVirtualCameraWidget.ShareWidget)
self.setFocusPolicy(QtCore.Qt.ClickFocus)
self.bgtexture = visualization.BackgroundImage()
self.camera_intrinsics = camera_intrinsics
self.camera_pose = None
self.camera_width = float(cam_width)
self.camera_height = float(cam_height)
self.camera_near = float(cam_near)
self.camera_far = float(cam_far)
self.screen_width = cam_width
self.screen_height = cam_height
self.items = []
self.key_event_handler = key_event_handler
self.mouse_event_handler = mouse_event_handler
self.noRepeatKeys = [
QtCore.Qt.Key_Right, QtCore.Qt.Key_Left, QtCore.Qt.Key_Up,
QtCore.Qt.Key_Down, QtCore.Qt.Key_PageUp, QtCore.Qt.Key_PageDown
]
self.keysPressed = {}
self.keyTimer = QtCore.QTimer()
self.keyTimer.timeout.connect(self.evalKeyState)
self.makeCurrent()
def setBackgroundTexture(self, m):
self.bgtexture.imageIn(m)
def setCameraIntrinsics(self, mat):
self.camera_intrinsics = mat
def setCameraPose(self, mat):
self.camera_pose = mat
def addItem(self, item):
self.items.append(item)
if hasattr(item, 'initializeGL'):
self.makeCurrent()
try:
item.initializeGL()
except:
self.checkOpenGLVersion(
'Error while adding item %s to GLViewWidget.' % str(item))
item._setView(self)
self.update()
def removeItem(self, item):
self.items.remove(item)
item._setView(None)
self.update()
def setItems(self, items):
for item in self.items:
self.removeItem(item)
for item in items:
self.addItem(item)
def initializeGL(self):
glClearColor(0.0, 0.0, 0.0, 0.0)
self.resizeGL(self.width(), self.height())
def resizeGL(self, w, h):
glViewport(0, 0, w, h)
self.screen_width = w
self.screen_height = h
#self.update()
def setProjection(self):
## Create the projection matrix
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
if self.camera_intrinsics is not None:
proj = calibration.projectionMatrix3x3ToOpenGL(
0., self.camera_width, 0., self.camera_height,
self.camera_near, self.camera_far, self.camera_intrinsics)
glMultMatrixd(proj.T)
def setModelview(self):
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
# XXX Needs more thoughts .. a transpose could be required here to be consistent with the global matrix handling
# if self.camera_pose is not None:
# pose = self.camera_pose.toMatrix()
# glMultMatrixd(pose)
def paintGL(self):
self.setProjection()
self.setModelview()
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT)
if self.bgtexture is not None:
self.bgtexture.draw(self.screen_width, self.screen_height)
self.drawItemTree()
def drawItemTree(self, item=None):
if item is None:
items = [x for x in self.items if x.parentItem() is None]
else:
items = item.childItems()
items.append(item)
items.sort(lambda a, b: cmp(a.depthValue(), b.depthValue()))
for i in items:
if not i.visible():
continue
if i is item:
try:
glPushAttrib(GL_ALL_ATTRIB_BITS)
i.paint()
except:
import pyqtgraph.debug
pyqtgraph.debug.printExc()
msg = "Error while drawing item %s." % str(item)
ver = glGetString(GL_VERSION)
if ver is not None:
ver = ver.split()[0]
if int(ver.split('.')[0]) < 2:
print(
msg +
" The original exception is printed above; however, pyqtgraph requires OpenGL version 2.0 or greater for many of its 3D features and your OpenGL version is %s. Installing updated display drivers may resolve this issue."
% ver)
else:
print(msg)
finally:
glPopAttrib()
else:
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
try:
tr = i.transform()
a = np.array(tr.copyDataTo()).reshape((4, 4))
glMultMatrixf(a.transpose())
self.drawItemTree(i)
finally:
glMatrixMode(GL_MODELVIEW)
glPopMatrix()
def mousePressEvent(self, ev):
self.mousePos = ev.pos()
if self.mouse_event_handler:
self.mouse_event_handler(("press", ev))
def mouseMoveEvent(self, ev):
if self.mouse_event_handler:
self.mouse_event_handler(("move", ev))
def mouseReleaseEvent(self, ev):
if self.mouse_event_handler:
self.mouse_event_handler(("release", ev))
def wheelEvent(self, ev):
if self.mouse_event_handler:
self.mouse_event_handler(("wheel", ev))
def keyPressEvent(self, ev):
if ev.key() in self.noRepeatKeys:
ev.accept()
if ev.isAutoRepeat():
return
self.keysPressed[ev.key()] = 1
self.evalKeyState()
if self.key_event_handler:
self.key_event_handler(("press", ev, self.keysPressed))
def keyReleaseEvent(self, ev):
if ev.key() in self.noRepeatKeys:
ev.accept()
if ev.isAutoRepeat():
return
try:
del self.keysPressed[ev.key()]
except:
self.keysPressed = {}
self.evalKeyState()
if self.key_event_handler:
self.key_event_handler(("release", ev, self.keysPressed))
def checkOpenGLVersion(self, msg):
## Only to be called from within exception handler.
ver = glGetString(GL_VERSION).split()[0]
if int(ver.split('.')[0]) < 2:
import pyqtgraph.debug
pyqtgraph.debug.printExc()
raise Exception(
msg +
" The original exception is printed above; however, utInteractiveConsole requires OpenGL version 2.0 or greater for many of its 3D features and your OpenGL version is %s. Installing updated display drivers may resolve this issue."
% ver)
else:
raise
def evalKeyState(self):
speed = 2.0
if len(self.keysPressed) > 0:
for key in self.keysPressed:
if key == QtCore.Qt.Key_Right:
pass
elif key == QtCore.Qt.Key_Left:
pass
elif key == QtCore.Qt.Key_Up:
pass
elif key == QtCore.Qt.Key_Down:
pass
elif key == QtCore.Qt.Key_PageUp:
pass
elif key == QtCore.Qt.Key_PageDown:
pass
self.keyTimer.start(16)
else:
self.keyTimer.stop()
def readQImage(self):
"""
Read the current buffer pixels out as a QImage.
"""
w = self.width()
h = self.height()
self.repaint()
pixels = np.empty((h, w, 4), dtype=np.ubyte)
pixels[:] = 128
pixels[..., 0] = 50
pixels[..., 3] = 255
glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, pixels)
# swap B,R channels for Qt
tmp = pixels[..., 0].copy()
pixels[..., 0] = pixels[..., 2]
pixels[..., 2] = tmp
pixels = pixels[::-1] # flip vertical
img = fn.makeQImage(pixels, transpose=False)
return img
def renderToArray(self,
size,
format=GL_BGRA,
type=GL_UNSIGNED_BYTE,
textureSize=1024,
padding=256):
w, h = map(int, size)
self.makeCurrent()
tex = None
fb = None
try:
output = np.empty((w, h, 4), dtype=np.ubyte)
fb = glfbo.glGenFramebuffers(1)
glfbo.glBindFramebuffer(glfbo.GL_FRAMEBUFFER, fb)
glEnable(GL_TEXTURE_2D)
tex = glGenTextures(1)
glBindTexture(GL_TEXTURE_2D, tex)
texwidth = textureSize
data = np.zeros((texwidth, texwidth, 4), dtype=np.ubyte)
## Test texture dimensions first
glTexImage2D(GL_PROXY_TEXTURE_2D, 0, GL_RGBA, texwidth, texwidth,
0, GL_RGBA, GL_UNSIGNED_BYTE, None)
if glGetTexLevelParameteriv(GL_PROXY_TEXTURE_2D, 0,
GL_TEXTURE_WIDTH) == 0:
raise Exception(
"OpenGL failed to create 2D texture (%dx%d); too large for this hardware."
% shape[:2])
## create teture
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texwidth, texwidth, 0,
GL_RGBA, GL_UNSIGNED_BYTE, data.transpose((1, 0, 2)))
self.opts['viewport'] = (
0, 0, w, h
) # viewport is the complete image; this ensures that paintGL(region=...)
# is interpreted correctly.
p2 = 2 * padding
for x in range(-padding, w - padding, texwidth - p2):
for y in range(-padding, h - padding, texwidth - p2):
x2 = min(x + texwidth, w + padding)
y2 = min(y + texwidth, h + padding)
w2 = x2 - x
h2 = y2 - y
## render to texture
glfbo.glFramebufferTexture2D(glfbo.GL_FRAMEBUFFER,
glfbo.GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, tex, 0)
self.paintGL(region=(x, h - y - h2, w2, h2),
viewport=(0, 0, w2,
h2)) # only render sub-region
## read texture back to array
data = glGetTexImage(GL_TEXTURE_2D, 0, format, type)
data = np.fromstring(data, dtype=np.ubyte).reshape(
texwidth, texwidth, 4).transpose(1, 0, 2)[:, ::-1]
output[x + padding:x2 - padding, y + padding:y2 -
padding] = data[padding:w2 - padding,
-(h2 - padding):-padding]
finally:
self.opts['viewport'] = None
glfbo.glBindFramebuffer(glfbo.GL_FRAMEBUFFER, 0)
glBindTexture(GL_TEXTURE_2D, 0)
if tex is not None:
glDeleteTextures([tex])
if fb is not None:
glfbo.glDeleteFramebuffers([fb])
return output
