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Qt4_GraphicsManager.py
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Qt4_GraphicsManager.py
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# Project: MXCuBE
# https://github.com/mxcube.
#
# This file is part of MXCuBE software.
#
# MXCuBE is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# MXCuBE is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with MXCuBE. If not, see <http://www.gnu.org/licenses/>.
"""
Qt4/5/PySide Graphics manager for MxCuBE.
Hardware object handles QGraphicsView and QGraphicsScene with all
objects and actions necessary for MXCuBE:
- Creating/removing/editing/drawing of centring points, collection vectors
and 2D grids
- Display of beam shape, rotatio axis, scales
- Distance, angle and area measurement tools
- Video handling, scalling and magnification tools
example xml:
<object class="Qt4_GraphicsManager">
<object href="/mini-diff-mockup" role="diffractometer"/>
<object href="/beam-info" role="beam_info"/>
<object href="/Qt4_video-mockup" role="camera"/>
<magnification_tool>{"scale": 4, "area_size": 50}</magnification_tool>
</object>
"""
__credits__ = ["MXCuBE colaboration"]
__version__ = "2.3"
__category__ = "Graphics"
import os
#import atexit
import tempfile
import logging
import subprocess
import numpy as np
from gevent import spawn
from time import sleep
from QtImport import *
from copy import deepcopy
from scipy import ndimage
from scipy.interpolate import splrep, sproot
import Qt4_GraphicsLib as GraphicsLib
import queue_model_objects_v1 as queue_model_objects
from HardwareRepository.BaseHardwareObjects import HardwareObject
class Qt4_GraphicsManager(HardwareObject):
def __init__(self, name):
"""
:param name: name
:type name: str
"""
HardwareObject.__init__(self, name)
self.diffractometer_hwobj = None
self.camera_hwobj = None
self.beam_info_hwobj = None
self.graphics_config_filename = None
self.pixels_per_mm = [0, 0]
self.beam_position = [0, 0]
self.beam_info_dict = {}
self.graphics_scene_size = [0, 0]
self.mouse_position = [0, 0]
self.image_scale = None
self.image_scale_list = []
self.auto_grid = None
self.auto_grid_size_mm = (0, 0)
self.omega_axis_info_dict = {}
self.in_centring_state = None
self.in_grid_drawing_state = None
self.in_measure_distance_state = None
self.in_measure_angle_state = None
self.in_measure_area_state = None
self.in_move_beam_mark_state = None
self.in_select_items_state = None
self.in_beam_define_state = None
self.in_magnification_mode = None
self.wait_grid_drawing_click = None
self.wait_measure_distance_click = None
self.wait_measure_angle_click = None
self.wait_measure_area_click = None
self.wait_beam_define_click = None
self.current_centring_method = None
self.point_count = 0
self.line_count = 0
self.grid_count = 0
self.shape_dict = {}
self.temp_animation_dir = None
self.graphics_view = None
self.graphics_camera_frame = None
self.graphics_beam_item = None
self.graphics_scale_item = None
self.graphics_omega_reference_item = None
self.graphics_centring_lines_item = None
self.graphics_grid_draw_item = None
self.graphics_measure_distance_item = None
self.graphics_measure_angle_item = None
self.graphics_measure_area_item = None
self.graphics_move_beam_mark_item = None
self.graphics_select_tool_item = None
self.graphics_beam_define_item = None
self.graphics_move_up_item = None
self.graphics_move_right_item = None
self.graphics_move_down_item = None
self.graphics_move_left_item = None
self.graphics_magnification_item = None
def init(self):
"""Main init function. Initiates all graphics items, hwobjs and
connects all qt signals to slots.
"""
self.graphics_view = GraphicsLib.GraphicsView()
self.graphics_camera_frame = GraphicsLib.GraphicsCameraFrame()
self.graphics_scale_item = GraphicsLib.GraphicsItemScale(self)
self.graphics_omega_reference_item = \
GraphicsLib.GraphicsItemOmegaReference(self)
self.graphics_beam_item = GraphicsLib.GraphicsItemBeam(self)
self.graphics_info_item = GraphicsLib.GraphicsItemInfo(self)
self.graphics_info_item.hide()
self.graphics_move_beam_mark_item = \
GraphicsLib.GraphicsItemMoveBeamMark(self)
self.graphics_move_beam_mark_item.hide()
self.graphics_centring_lines_item = \
GraphicsLib.GraphicsItemCentringLines(self)
self.graphics_centring_lines_item.hide()
self.graphics_measure_distance_item = \
GraphicsLib.GraphicsItemMeasureDistance(self)
self.graphics_measure_distance_item.hide()
self.graphics_measure_angle_item = \
GraphicsLib.GraphicsItemMeasureAngle(self)
self.graphics_measure_angle_item.hide()
self.graphics_measure_area_item = \
GraphicsLib.GraphicsItemMeasureArea(self)
self.graphics_measure_area_item.hide()
self.graphics_select_tool_item = GraphicsLib.GraphicsSelectTool(self)
self.graphics_select_tool_item.hide()
self.graphics_beam_define_item = GraphicsLib.GraphicsItemBeamDefine(self)
self.graphics_beam_define_item.hide()
self.graphics_move_up_item = \
GraphicsLib.GraphicsItemMoveButton(self, "up")
self.graphics_move_right_item = \
GraphicsLib.GraphicsItemMoveButton(self, "right")
self.graphics_move_down_item = \
GraphicsLib.GraphicsItemMoveButton(self, "down")
self.graphics_move_left_item = \
GraphicsLib.GraphicsItemMoveButton(self, "left")
self.graphics_magnification_item = \
GraphicsLib.GraphicsMagnificationItem(self)
self.graphics_magnification_item.hide()
self.graphics_view.graphics_scene.addItem(self.graphics_camera_frame)
self.graphics_view.graphics_scene.addItem(self.graphics_omega_reference_item)
self.graphics_view.graphics_scene.addItem(self.graphics_beam_item)
self.graphics_view.graphics_scene.addItem(self.graphics_info_item)
self.graphics_view.graphics_scene.addItem(self.graphics_move_beam_mark_item)
self.graphics_view.graphics_scene.addItem(self.graphics_centring_lines_item)
self.graphics_view.graphics_scene.addItem(self.graphics_scale_item)
self.graphics_view.graphics_scene.addItem(self.graphics_measure_distance_item)
self.graphics_view.graphics_scene.addItem(self.graphics_measure_angle_item)
self.graphics_view.graphics_scene.addItem(self.graphics_measure_area_item)
self.graphics_view.graphics_scene.addItem(self.graphics_select_tool_item)
self.graphics_view.graphics_scene.addItem(self.graphics_beam_define_item)
self.graphics_view.graphics_scene.addItem(self.graphics_move_up_item)
self.graphics_view.graphics_scene.addItem(self.graphics_move_right_item)
self.graphics_view.graphics_scene.addItem(self.graphics_move_down_item)
self.graphics_view.graphics_scene.addItem(self.graphics_move_left_item)
self.graphics_view.graphics_scene.addItem(self.graphics_magnification_item)
self.graphics_view.scene().mouseClickedSignal.connect(\
self.mouse_clicked)
self.graphics_view.scene().mouseDoubleClickedSignal.connect(\
self.mouse_double_clicked)
self.graphics_view.scene().mouseReleasedSignal.connect(\
self.mouse_released)
self.graphics_view.scene().itemClickedSignal.connect(\
self.item_clicked)
self.graphics_view.scene().itemDoubleClickedSignal.connect(\
self.item_double_clicked)
self.graphics_view.scene().moveItemClickedSignal.connect(\
self.move_item_clicked)
self.graphics_view.mouseMovedSignal.connect(self.mouse_moved)
self.graphics_view.keyPressedSignal.connect(self.key_pressed)
self.graphics_view.wheelSignal.connect(self.mouse_wheel_scrolled)
self.diffractometer_hwobj = self.getObjectByRole("diffractometer")
pixels_per_mm = self.diffractometer_hwobj.get_pixels_per_mm()
self.diffractometer_pixels_per_mm_changed(pixels_per_mm)
GraphicsLib.GraphicsItemGrid.set_grid_direction(\
self.diffractometer_hwobj.get_grid_direction())
self.connect(self.diffractometer_hwobj, "minidiffStateChanged",
self.diffractometer_state_changed)
self.connect(self.diffractometer_hwobj, "centringStarted",
self.diffractometer_centring_started)
self.connect(self.diffractometer_hwobj, "centringAccepted",
self.create_centring_point)
self.connect(self.diffractometer_hwobj, "centringSuccessful",
self.diffractometer_centring_successful)
self.connect(self.diffractometer_hwobj, "centringFailed",
self.diffractometer_centring_failed)
self.connect(self.diffractometer_hwobj, "pixelsPerMmChanged",
self.diffractometer_pixels_per_mm_changed)
self.connect(self.diffractometer_hwobj, "omegaReferenceChanged",
self.diffractometer_omega_reference_changed)
self.connect(self.diffractometer_hwobj, "phiMotorMoved",
self.diffractometer_phi_motor_moved)
self.connect(self.diffractometer_hwobj, "minidiffPhaseChanged",
self.diffractometer_phase_changed)
self.beam_info_hwobj = self.getObjectByRole("beam_info")
if self.beam_info_hwobj is not None:
self.beam_info_dict = self.beam_info_hwobj.get_beam_info()
self.beam_position = self.beam_info_hwobj.get_beam_position()
self.connect(self.beam_info_hwobj,
"beamPosChanged",
self.beam_position_changed)
self.connect(self.beam_info_hwobj,
"beamInfoChanged",
self.beam_info_changed)
self.beam_info_changed(self.beam_info_dict)
self.beam_position_changed(self.beam_info_hwobj.get_beam_position())
else:
logging.getLogger("HWR").error("GraphicsManager: BeamInfo hwobj not defined")
self.camera_hwobj = self.getObjectByRole("camera")
if self.camera_hwobj is not None:
self.graphics_scene_size = self.camera_hwobj.get_image_dimensions()
self.set_graphics_scene_size(self.graphics_scene_size, False)
self.camera_hwobj.start_camera()
self.connect(self.camera_hwobj,
"imageReceived",
self.camera_image_received)
else:
logging.getLogger("HWR").error("GraphicsManager: Camera hwobj not defined")
try:
self.image_scale_list = eval(self.getProperty("image_scale_list"))
if len(self.image_scale_list) > 0:
self.image_scale = self.getProperty("default_image_scale")
self.set_image_scale(self.image_scale, self.image_scale is not None)
except:
pass
if self.getProperty("store_graphics_config") == True:
#atexit.register(self.save_graphics_config)
self.graphics_config_filename = self.getProperty("graphics_config_filename")
if self.graphics_config_filename is None:
self.graphics_config_filename = os.path.join(
self.user_file_directory,
"graphics_config.dat")
self.load_graphics_config()
try:
self.auto_grid_size_mm = eval(self.getProperty("auto_grid_size_mm"))
except:
self.auto_grid_size_mm = (0.2, 0.2)
self.graphics_move_up_item.setVisible(\
self.getProperty("enable_move_buttons") == True)
self.graphics_move_right_item.setVisible(\
self.getProperty("enable_move_buttons") == True)
self.graphics_move_down_item.setVisible(\
self.getProperty("enable_move_buttons") == True)
self.graphics_move_left_item.setVisible(\
self.getProperty("enable_move_buttons") == True)
#self.set_scrollbars_off(\
# self.getProperty("scrollbars_always_off") == True)
try:
self.graphics_magnification_item.set_properties(\
eval(self.getProperty("magnification_tool")))
except:
pass
#try:
# self.set_view_scale(self.getProperty("view_scale"))
#except:
# pass
#self.init_auto_grid()
self.temp_animation_dir = os.path.join(\
self.user_file_directory,
"animation")
def save_graphics_config(self):
"""Saves graphical objects in the file
"""
if self.graphics_config_filename is None:
return
logging.getLogger("HWR").debug("GraphicsManager: Saving graphics " + \
"in configuration file %s" % self.graphics_config_filename)
try:
if not os.path.exists(os.path.dirname(self.graphics_config_filename)):
os.makedirs(os.path.dirname(self.graphics_config_filename))
graphics_config_file = open(self.graphics_config_filename, "w")
graphics_config = []
for shape in self.get_shapes():
if isinstance(shape, GraphicsLib.GraphicsItemPoint):
cpos = shape.get_centred_position()
graphics_config.append({"type" : "point",
"index": shape.index,
"pos_x": shape.start_coord,
"pos_y": shape.end_coord,
"cpos": cpos.as_dict(),
"cpos_index": cpos.get_index()})
elif isinstance(shape, GraphicsLib.GraphicsItemLine):
(start_point_index, end_point_index) = shape.get_points_index()
graphics_config.append({"type" : "line",
"index": shape.index,
"start_point_index": start_point_index,
"end_point_index": end_point_index,})
graphics_config_file.write(repr(graphics_config))
graphics_config_file.close()
except:
logging.getLogger("HWR").error("GraphicsManager: Error saving graphics " + \
"in configuration file %s" % self.graphics_config_filename)
def load_graphics_config(self):
"""Loads graphics from file
"""
if os.path.exists(self.graphics_config_filename):
try:
logging.getLogger("HWR").debug("GraphicsManager: Loading graphics " + \
"from configuration file %s" % self.graphics_config_filename)
graphics_config_file = open(self.graphics_config_filename)
graphics_config = eval(graphics_config_file.read())
for graphics_item in graphics_config:
if graphics_item["type"] == "point":
point = self.create_centring_point(\
None, {"motors": graphics_item["cpos"]})
point.index = graphics_item["index"]
cpos = point.get_centred_position()
cpos.set_index(graphics_item["cpos_index"])
for graphics_item in graphics_config:
if graphics_item["type"] == "line":
start_point = self.get_point_by_index(\
graphics_item["start_point_index"])
end_point = self.get_point_by_index(\
graphics_item["end_point_index"])
self.create_line(start_point, end_point)
self.de_select_all()
graphics_config_file.close()
except:
logging.getLogger("HWR").error("GraphicsManager: Unable to load " + \
"graphics from configuration file %s" % self.graphics_config_filename)
def camera_image_received(self, pixmap_image):
"""Method called when a frame from camera arrives.
Slot to signal 'imageReceived'
:param pixmap_image: frame from camera
:type pixmap_image: QtGui.QPixmapImage
"""
if self.image_scale:
pixmap_image = pixmap_image.scaled(QSize(\
pixmap_image.width() * self.image_scale,
pixmap_image.height() * self.image_scale))
self.graphics_camera_frame.setPixmap(pixmap_image)
if self.in_magnification_mode:
self.graphics_magnification_item.set_pixmap(pixmap_image)
def beam_position_changed(self, position):
"""Method called when beam position on the screen changed.
:param position: beam position on a screen
:type position: list of two int
"""
if position:
self.beam_position = position
for graphics_item in self.graphics_view.graphics_scene.items():
if isinstance(graphics_item, GraphicsLib.GraphicsItem):
graphics_item.set_beam_position(position)
def beam_info_changed(self, beam_info):
"""Method called when beam info changed
:param beam_info: information about the beam shape
:type beam_info: dict with beam info parameters
"""
if beam_info:
self.beam_info_dict = beam_info
for graphics_item in self.graphics_view.graphics_scene.items():
if isinstance(graphics_item, GraphicsLib.GraphicsItem):
graphics_item.set_beam_info(beam_info)
def diffractometer_state_changed(self, *args):
"""Method called when diffractometer state changed.
Updates point screen coordinates and grid coorner coordinates.
If diffractometer not ready then hides all shapes.
"""
if self.diffractometer_hwobj.is_ready() and \
not self.in_centring_state:
for shape in self.get_shapes():
if isinstance(shape, GraphicsLib.GraphicsItemPoint):
cpos = shape.get_centred_position()
new_x, new_y = self.diffractometer_hwobj.\
motor_positions_to_screen(cpos.as_dict())
shape.set_start_position(new_x, new_y)
elif isinstance(shape, GraphicsLib.GraphicsItemGrid):
grid_cpos = shape.get_centred_position()
if grid_cpos is not None:
current_cpos = queue_model_objects.CentredPosition(\
self.diffractometer_hwobj.get_positions())
current_cpos.set_motor_pos_delta(0.1)
grid_cpos.set_motor_pos_delta(0.1)
if hasattr(grid_cpos, "zoom"):
current_cpos.zoom = grid_cpos.zoom
center_coord = self.diffractometer_hwobj.\
motor_positions_to_screen(grid_cpos.as_dict())
if center_coord:
shape.set_center_coord(center_coord)
corner_coord = []
for motor_pos in shape.get_motor_pos_corner():
corner_coord.append((self.diffractometer_hwobj.\
motor_positions_to_screen(motor_pos)))
shape.set_corner_coord(corner_coord)
if current_cpos == grid_cpos:
shape.set_projection_mode(False)
else:
shape.set_projection_mode(True)
self.show_all_items()
self.graphics_view.graphics_scene.update()
self.emit("diffractometerReady", True)
else:
self.hide_all_items()
self.emit("diffractometerReady", False)
def diffractometer_phase_changed(self, phase):
"""Phase changed event.
If PHASE_BEAM then displays a grid on the screen
"""
self.graphics_scale_item.set_display_grid(\
phase == self.diffractometer_hwobj.PHASE_BEAM)
self.emit("diffractometerPhaseChanged", phase)
def diffractometer_centring_started(self, centring_method, flexible):
"""Method called when centring started as a reply from diffractometer
:param centring_method: centring method
:type centring_method: str
:param flexible: flexible bit
:type flexible: bool
:emits: centringStarted
"""
self.current_centring_method = centring_method
self.emit("centringStarted")
def create_centring_point(self, centring_state, centring_status):
"""Creates a new centring position and adds it to graphics point.
:param centring_state:
:type centring_state: str
:param centring_status: dictionary with motor pos and etc
:type centring_status: dict
:emits: centringInProgress
"""
p_dict = {}
if 'motors' in centring_status and \
'extraMotors' in centring_status:
p_dict = dict(centring_status['motors'],
**centring_status['extraMotors'])
elif 'motors' in centring_status:
p_dict = dict(centring_status['motors'])
self.emit("centringInProgress", False)
if p_dict:
cpos = queue_model_objects.CentredPosition(p_dict)
screen_pos = self.diffractometer_hwobj.\
motor_positions_to_screen(cpos.as_dict())
point = GraphicsLib.GraphicsItemPoint(cpos, True,
screen_pos[0], screen_pos[1])
self.add_shape(point)
cpos.set_index(point.index)
return point
def diffractometer_centring_successful(self, method, centring_status):
"""Last stage in centring procedure
:param method: method name
:type method: str
:param centring_status: centring status
:type centring_status: dict
:emits: - centringSuccessful
- infoMsg
"""
self.set_centring_state(False)
self.emit("centringSuccessful", method, centring_status)
self.emit("infoMsg", "Click Save to store the centred point "+\
"or start a new centring")
def diffractometer_centring_failed(self, method, centring_status):
"""CleanUp method after centring failed
:param method: method name
:type method: str
:param centring_status: centring status
:type centring_status: dict
:emits: - centringFailed
- infoMsg
"""
self.set_centring_state(False)
self.emit("centringFailed", method, centring_status)
self.emit("infoMsg", "")
def diffractometer_pixels_per_mm_changed(self, pixels_per_mm):
"""Updates graphics scale when zoom changed
:param pixels_per_mm: two floats for scaling
:type pixels_per_mm: list with two floats
"""
if type(pixels_per_mm) in (list, tuple):
if pixels_per_mm != self.pixels_per_mm:
self.pixels_per_mm = pixels_per_mm
for item in self.graphics_view.graphics_scene.items():
if isinstance(item, GraphicsLib.GraphicsItem):
item.set_pixels_per_mm(self.pixels_per_mm)
self.graphics_view.graphics_scene.update()
def diffractometer_omega_reference_changed(self, omega_reference):
"""Method called when omega reference changed
:param omega_reference: omega reference values
:type omega_reference: list of two coordinated
"""
self.graphics_omega_reference_item.set_reference(omega_reference)
def diffractometer_phi_motor_moved(self, position):
"""Method when phi motor changed. Updates omega reference by
redrawing phi angle
:param position: phi rotation value
:type position: float
"""
self.graphics_omega_reference_item.set_phi_position(position)
def mouse_clicked(self, pos_x, pos_y, left_click=True):
"""Method when mouse clicked on GraphicsScene
:param pos_x: screen coordinate X
:type pos_x: int
:param pos_y: screen coordinate Y
:type pos_y: int
:param left_click: left button clicked
:type left_click: bool
:emits: - shapeSelected
- pointSelected
- infoMsg
"""
if self.in_centring_state:
self.graphics_centring_lines_item.add_position(pos_x, pos_y)
self.diffractometer_hwobj.image_clicked(pos_x, pos_y)
elif self.wait_grid_drawing_click:
self.in_grid_drawing_state = True
self.graphics_grid_draw_item.set_draw_mode(True)
self.graphics_grid_draw_item.set_draw_start_position(pos_x, pos_y)
self.graphics_grid_draw_item.show()
elif self.wait_measure_distance_click:
self.start_graphics_item(self.graphics_measure_distance_item)
self.in_measure_distance_state = True
self.wait_measure_distance_click = False
elif self.wait_measure_angle_click:
self.start_graphics_item(self.graphics_measure_angle_item)
self.in_measure_angle_state = True
self.wait_measure_angle_click = False
elif self.wait_measure_area_click:
self.start_graphics_item(self.graphics_measure_area_item)
self.in_measure_area_state = True
self.wait_measure_area_click = False
elif self.wait_beam_define_click:
self.start_graphics_item(self.graphics_beam_define_item)
self.in_beam_define_state = True
self.wait_beam_define_click = False
elif self.in_measure_distance_state:
self.graphics_measure_distance_item.store_coord(pos_x, pos_y)
elif self.in_measure_angle_state:
self.graphics_measure_angle_item.store_coord(pos_x, pos_y)
elif self.in_measure_area_state:
self.graphics_measure_area_item.store_coord()
elif self.in_move_beam_mark_state:
self.stop_move_beam_mark()
elif self.in_beam_define_state:
self.stop_beam_define()
#self.graphics_beam_define_item.store_coord(pos_x, pos_y)
else:
self.emit("pointSelected", None)
self.emit("infoMsg", "")
if left_click:
self.graphics_select_tool_item.set_start_position(pos_x, pos_y)
self.graphics_select_tool_item.set_end_position(pos_x, pos_y)
self.graphics_select_tool_item.show()
self.in_select_items_state = True
for graphics_item in self.graphics_view.scene().items():
graphics_item.setSelected(False)
if type(graphics_item) in [GraphicsLib.GraphicsItemPoint,
GraphicsLib.GraphicsItemLine,
GraphicsLib.GraphicsItemGrid]:
self.emit("shapeSelected", graphics_item, False)
#if isinstance(graphics_item, GraphicsLib.GraphicsItemPoint):
# self.emit("pointSelected", graphics_item)
def mouse_double_clicked(self, pos_x, pos_y):
"""If in one of the measuring states, then stops measuring.
Otherwise moves to screen coordinate
:param pos_x: screen coordinate X
:type pos_x: int
:param pos_y: screen coordinate Y
:type pos_y: int
"""
if self.in_measure_distance_state:
self.stop_measure_distance()
elif self.in_measure_angle_state:
self.stop_measure_angle()
elif self.in_measure_area_state:
self.stop_measure_area()
elif self.in_beam_define_state:
self.stop_beam_define()
else:
self.diffractometer_hwobj.move_to_beam(pos_x, pos_y)
def mouse_released(self, pos_x, pos_y):
"""Mouse release method. Used to finish grid drawing and item
selection with selection rectangle
:param pos_x: screen coordinate X
:type pos_x: int
:param pos_y: screen coordinate Y
:type pos_y: int
:emits: shapeCreated
"""
if self.in_grid_drawing_state:
QApplication.setOverrideCursor(QCursor(Qt.ArrowCursor))
self.update_grid_motor_positions(self.graphics_grid_draw_item)
self.graphics_grid_draw_item.set_draw_mode(False)
self.wait_grid_drawing_click = False
self.in_grid_drawing_state = False
self.de_select_all()
self.emit("shapeCreated", self.graphics_grid_draw_item, "Grid")
self.graphics_grid_draw_item.setSelected(True)
self.shape_dict[self.graphics_grid_draw_item.get_display_name()] = \
self.graphics_grid_draw_item
elif self.in_beam_define_state:
self.stop_beam_define()
elif self.in_select_items_state:
self.graphics_select_tool_item.hide()
self.in_select_items_state = False
"""
for point in self.get_points():
if point.isSelected():
self.emit("pointSelected", point)
"""
self.select_lines_and_grids()
def mouse_moved(self, pos_x, pos_y):
"""Executed when mouse moved. Used in all measure methods, centring
procedure and item selection procedure.
:param pos_x: screen coordinate X
:type pos_x: int
:param pos_y: screen coordinate Y
:type pos_y: int
:emits: mouseMoved
"""
self.emit("mouseMoved", pos_x, pos_y)
self.mouse_position[0] = pos_x
self.mouse_position[1] = pos_y
if self.in_centring_state:
self.graphics_centring_lines_item.set_start_position(pos_x, pos_y)
elif self.in_grid_drawing_state:
if self.graphics_grid_draw_item.is_draw_mode():
self.graphics_grid_draw_item.set_draw_end_position(pos_x, pos_y)
elif self.in_measure_distance_state:
self.graphics_measure_distance_item.set_coord(self.mouse_position)
elif self.in_measure_angle_state:
self.graphics_measure_angle_item.set_coord(self.mouse_position)
elif self.in_measure_area_state:
self.graphics_measure_area_item.set_coord(self.mouse_position)
elif self.in_move_beam_mark_state:
self.graphics_move_beam_mark_item.set_end_position(\
self.mouse_position[0], self.mouse_position[1])
elif self.in_beam_define_state:
self.graphics_beam_define_item.set_end_position(\
self.mouse_position[0], self.mouse_position[1])
elif self.in_select_items_state:
self.graphics_select_tool_item.set_end_position(pos_x, pos_y)
select_start_x = self.graphics_select_tool_item.start_coord[0]
select_start_y = self.graphics_select_tool_item.start_coord[1]
if abs(select_start_x - pos_x) > 5 and \
abs(select_start_y - pos_y) > 5:
painter_path = QPainterPath()
painter_path.addRect(min(select_start_x, pos_x),
min(select_start_y, pos_y),
abs(select_start_x - pos_x),
abs(select_start_y - pos_y))
self.graphics_view.graphics_scene.setSelectionArea(painter_path)
"""
for point in self.get_points():
if point.isSelected():
self.emit("pointSelected", point)
self.select_lines_and_grids()
"""
elif self.in_magnification_mode:
self.graphics_magnification_item.set_end_position(pos_x, pos_y)
def key_pressed(self, key_event):
"""Method when key on GraphicsView pressed.
- Deletes selected shapes if Delete pressed
- Cancels measurement action if Escape pressed
:param key_event: key event type
:type key_event: str
"""
if key_event == "Delete":
for item in self.graphics_view.graphics_scene.items():
if item.isSelected():
self.delete_shape(item)
elif key_event == "Escape":
self.stop_measure_distance()
self.stop_measure_angle()
self.stop_measure_area()
if self.in_beam_define_state:
self.stop_beam_define()
if self.in_magnification_mode:
self.set_magnification_mode(False)
#elif key_event == "Up":
# self.diffractometer_hwobj.move_to_beam(self.beam_position[0],
# self.beam_position[1] - 50)
#elif key_event == "Down":
# self.diffractometer_hwobj.move_to_beam(self.beam_position[0],
# self.beam_position[1] + 50)
elif key_event == "Plus":
self.diffractometer_hwobj.zoom_in()
elif key_event == "Minus":
self.diffractometer_hwobj.zoom_out()
def mouse_wheel_scrolled(self, delta):
"""Method called when mouse wheel is scrolled.
Rotates omega axis up or down
"""
if delta > 0:
self.diffractometer_hwobj.move_omega_relative(20)
else:
self.diffractometer_hwobj.move_omega_relative(-20)
def item_clicked(self, item, state):
"""Item clicked event
:param item: clicked item
:type item: QGraphicsLib.GraphicsItem
:param state: selection state
:type state: bool
:emits: - pointsSelected
- infoMsg
"""
if type(item) in [GraphicsLib.GraphicsItemPoint,
GraphicsLib.GraphicsItemLine,
GraphicsLib.GraphicsItemGrid]:
self.emit("shapeSelected", item, state)
if isinstance(item, GraphicsLib.GraphicsItemPoint):
self.emit("pointSelected", item)
self.emit("infoMsg", item.get_full_name() + " selected")
def item_double_clicked(self, item):
"""Item double clicked method.
If centring point double clicked then moves motors to the
centring position
:param item: double clicked item
:type item: QGraphicsLib.GraphicsItem
"""
if isinstance(item, GraphicsLib.GraphicsItemPoint):
self.diffractometer_hwobj.move_to_centred_position(\
item.get_centred_position())
def move_item_clicked(self, direction):
"""Moves sample
"""
#TODO Not implemented yet
print "Move screen: ", direction
def get_graphics_view(self):
"""Rturns current GraphicsView
:returns: QGraphicsView
"""
return self.graphics_view
def get_graphics_camera_frame(self):
"""Rturns current CameraFrame
:returns: GraphicsCameraFrame
"""
return self.graphics_camera_frame
def set_graphics_scene_size(self, size, fixed):
"""Sets fixed size of scene
:param size: scene size
:type size: list
:param fixed: fixed bit
:type fixed: bool
"""
if not self.graphics_scene_size or fixed:
self.graphics_scene_size = size
self.graphics_scale_item.set_start_position(size[0], size[1])
self.graphics_view.scene().setSceneRect(0, 0, size[0], size[1])
#self.graphics_view.setFixedSize(size[0] + 2, size[1] + 2)
def set_centring_state(self, state):
"""Sets centrin state
:param state: centring state
:type state: bool
"""
self.in_centring_state = state
self.graphics_centring_lines_item.setVisible(state)
self.graphics_centring_lines_item.centring_points = []
def get_shapes(self):
"""Returns currently handled shapes.
:returns: list with shapes
"""
shapes_list = []
for shape in self.graphics_view.graphics_scene.items():
if type(shape) in (GraphicsLib.GraphicsItemPoint,
GraphicsLib.GraphicsItemLine,
GraphicsLib.GraphicsItemGrid):
shapes_list.append(shape)
return shapes_list
def get_points(self):
"""Returns all points
:returns: list with GraphicsLib.GraphicsItemPoint
"""
current_points = []
for shape in self.get_shapes():
if isinstance(shape, GraphicsLib.GraphicsItemPoint):
current_points.append(shape)
return current_points
def get_point_by_index(self, index):
"""Returns centring point by its index
:param index: point index
:type inde: int
:returns: Qt4_GraphicsLib.GraphicsPoint
"""
for point in self.get_points():
if point.index == index:
return point
def add_shape(self, shape):
"""Adds the shape <shape> to the list of handled objects.
:param shape: Shape to add.
:type shape: Shape object.
:emits: shapeSelected
"""
self.de_select_all()
if isinstance(shape, GraphicsLib.GraphicsItemPoint):
self.point_count += 1
shape.index = self.point_count
self.emit("shapeCreated", shape, "Point")
self.emit("pointSelected", shape)
self.emit("infoMsg", "Centring %s created" % shape.get_full_name())
elif isinstance(shape, GraphicsLib.GraphicsItemLine):
self.line_count += 1
shape.index = self.line_count
self.emit("shapeCreated", shape, "Line")
self.emit("infoMsg", "%s created" % shape.get_full_name())
self.shape_dict[shape.get_display_name()] = shape
self.graphics_view.graphics_scene.addItem(shape)
shape.set_tool_tip()
shape.setSelected(True)
self.emit("shapeSelected", shape, True)
self.save_graphics_config()
def delete_shape(self, shape):
"""Removes the shape <shape> from the list of handled shapes.
:param shape: The shape to remove
:type shape: GraphicsLib.GraphicsItem object
:emits: shapeDeleted
"""
if isinstance(shape, GraphicsLib.GraphicsItemPoint):
for s in self.get_shapes():
if isinstance(s, GraphicsLib.GraphicsItemLine):
if shape in s.get_graphics_points():
self.delete_shape(s)
break
shape_type = ""
if isinstance(shape, GraphicsLib.GraphicsItemPoint):
shape_type = "Point"
elif isinstance(shape, GraphicsLib.GraphicsItemLine):
shape_type = "Line"
elif isinstance(shape, GraphicsLib.GraphicsItemGrid):
shape_type = "Grid"
self.emit("shapeDeleted", shape, shape_type)
self.graphics_view.graphics_scene.removeItem(shape)
self.graphics_view.graphics_scene.update()
def get_shape_by_name(self, shape_name):
"""Returns shape by name
:param shape_name: name of the shape
:type shape_name: str
:returns: GraphicsLib.GraphicsItem
"""
return self.shape_dict.get(shape_name)
def clear_all(self):
"""Clear the shape history, remove all contents.
"""
self.point_count = 0
self.line_count = 0
self.grid_count = 0
for shape in self.get_shapes():
if shape == self.auto_grid:
shape.hide()
else:
self.delete_shape(shape)
self.graphics_view.graphics_scene.update()
def de_select_all(self):
"""Deselects all shapes
"""
self.graphics_view.graphics_scene.clearSelection()
def select_shape(self, shape, state=True):
"""Selects shape
:param shape: shape to be selected or unselected
:type shape: Qtg4_GraphicsLib.GraphicsItem
:param state: selection state
:type state: bool
"""
shape.setSelected(state)
self.graphics_view.graphics_scene.update()
def select_all_points(self):
"""Selects all points
"""
self.de_select_all()
for shape in self.get_points():
shape.setSelected(True)
self.graphics_view.graphics_scene.update()
def select_shape_with_cpos(self, cpos):
"""Selects point with centred position
:param cpos: centring point
:type cpos: queue_model_objects.CentredPosition
"""
self.de_select_all()
for shape in self.get_points():