mirror of
https://github.com/wassname/scikit-image.git
synced 2026-06-29 11:51:24 +08:00
Stefan van der Walt
243 lines
7.9 KiB
Python
243 lines
7.9 KiB
Python
'''
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Skivi is written/maintained/developed by:
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S. Chris Colbert - sccolbert@gmail.com
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Skivi is free software and is part of the scikits-image project.
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Skivi is governed by the licenses of the scikits-image project.
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Please report any bugs to the author.
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The skivi module is not meant to be used directly.
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Use skimage.io.imshow(img, fancy=True)'''
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from textwrap import dedent
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import numpy as np
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import sys
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from PyQt4 import QtCore, QtGui
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from PyQt4.QtGui import (QApplication, QMainWindow, QImage, QPixmap,
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QLabel, QWidget, QVBoxLayout, QSlider,
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QPainter, QColor, QFrame, QLayoutItem)
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from .q_color_mixer import MixerPanel
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from .q_histogram import QuadHistogram
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class ImageLabel(QLabel):
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def __init__(self, parent, arr):
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QLabel.__init__(self)
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self.parent = parent
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# we need to hold a reference to
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# arr because QImage doesn't copy the data
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# and the buffer must be alive as long
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# as the image is alive.
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self.arr = arr
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# we also need to pass in the row-stride to
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# the constructor, because we can't guarantee
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# that every row of the numpy data is
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# 4-byte aligned. Which Qt would require
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# if we didnt pass the stride.
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self.img = QImage(arr.data, arr.shape[1], arr.shape[0],
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arr.strides[0], QImage.Format_RGB888)
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self.pm = QPixmap.fromImage(self.img)
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self.setPixmap(self.pm)
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self.setAlignment(QtCore.Qt.AlignTop)
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self.setMinimumSize(100, 100)
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self.setMouseTracking(True)
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def mouseMoveEvent(self, evt):
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self.parent.label_mouseMoveEvent(evt)
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def resizeEvent(self, evt):
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width = self.width()
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pm = QPixmap.fromImage(self.img)
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self.pm = pm.scaledToWidth(width)
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self.setPixmap(self.pm)
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def update_image(self):
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width = self.width()
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pm = QPixmap.fromImage(self.img)
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pm = pm.scaledToWidth(width)
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self.setPixmap(pm)
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class RGBHSVDisplay(QFrame):
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def __init__(self):
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QFrame.__init__(self)
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self.setFrameStyle(QtGui.QFrame.Box|QtGui.QFrame.Sunken)
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self.posx_label = QLabel('X-pos:')
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self.posx_value = QLabel()
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self.posy_label = QLabel('Y-pos:')
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self.posy_value = QLabel()
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self.r_label = QLabel('R:')
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self.r_value = QLabel()
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self.g_label = QLabel('G:')
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self.g_value = QLabel()
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self.b_label = QLabel('B:')
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self.b_value = QLabel()
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self.h_label = QLabel('H:')
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self.h_value = QLabel()
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self.s_label = QLabel('S:')
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self.s_value = QLabel()
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self.v_label = QLabel('V:')
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self.v_value = QLabel()
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self.layout = QtGui.QGridLayout(self)
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self.layout.addWidget(self.posx_label, 0, 0)
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self.layout.addWidget(self.posx_value, 0, 1)
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self.layout.addWidget(self.posy_label, 1, 0)
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self.layout.addWidget(self.posy_value, 1, 1)
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self.layout.addWidget(self.r_label, 0, 2)
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self.layout.addWidget(self.r_value, 0, 3)
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self.layout.addWidget(self.g_label, 1, 2)
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self.layout.addWidget(self.g_value, 1, 3)
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self.layout.addWidget(self.b_label, 2, 2)
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self.layout.addWidget(self.b_value, 2, 3)
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self.layout.addWidget(self.h_label, 0, 4)
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self.layout.addWidget(self.h_value, 0, 5)
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self.layout.addWidget(self.s_label, 1, 4)
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self.layout.addWidget(self.s_value, 1, 5)
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self.layout.addWidget(self.v_label, 2, 4)
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self.layout.addWidget(self.v_value, 2, 5)
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def update_vals(self, data):
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xpos, ypos, r, g, b, h, s, v = data
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self.posx_value.setText(str(xpos)[:5])
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self.posy_value.setText(str(ypos)[:5])
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self.r_value.setText(str(r)[:5])
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self.g_value.setText(str(g)[:5])
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self.b_value.setText(str(b)[:5])
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self.h_value.setText(str(h)[:5])
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self.s_value.setText(str(s)[:5])
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self.v_value.setText(str(v)[:5])
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class SkiviImageWindow(QMainWindow):
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def __init__(self, arr, mgr):
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QMainWindow.__init__(self)
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self.arr = arr
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self.mgr = mgr
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self.main_widget = QWidget()
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self.layout = QtGui.QGridLayout(self.main_widget)
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self.setCentralWidget(self.main_widget)
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self.label = ImageLabel(self, arr)
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self.label_container = QFrame()
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self.label_container.setFrameShape(QtGui.QFrame.StyledPanel|QtGui.QFrame.Sunken)
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self.label_container.setLineWidth(1)
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self.label_container.layout = QtGui.QGridLayout(self.label_container)
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self.label_container.layout.setMargin(0)
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self.label_container.layout.addWidget(self.label, 0, 0)
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self.layout.addWidget(self.label_container, 0, 0)
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self.mgr.add_window(self)
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self.main_widget.show()
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self.setWindowTitle('Skivi - The skimage viewer.')
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self.mixer_panel = MixerPanel(self.arr)
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self.layout.addWidget(self.mixer_panel, 0, 2)
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self.mixer_panel.show()
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self.mixer_panel.set_callback(self.refresh_image)
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self.rgbv_hist = QuadHistogram(self.arr)
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self.layout.addWidget(self.rgbv_hist, 0, 1)
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self.rgbv_hist.show()
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self.rgb_hsv_disp = RGBHSVDisplay()
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self.layout.addWidget(self.rgb_hsv_disp, 1, 0)
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self.rgb_hsv_disp.show()
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self.layout.setColumnStretch(0, 1)
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self.layout.setRowStretch(0, 1)
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self.save_file = QtGui.QPushButton('Save to File')
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self.save_file.clicked.connect(self.save_to_file)
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self.save_stack = QtGui.QPushButton('Save to Stack')
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self.save_stack.clicked.connect(self.save_to_stack)
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self.save_file.show()
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self.save_stack.show()
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self.layout.addWidget(self.save_stack, 1, 1)
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self.layout.addWidget(self.save_file, 1, 2)
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def closeEvent(self, event):
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# Allow window to be destroyed by removing any
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# references to it
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self.mgr.remove_window(self)
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def update_histograms(self):
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self.rgbv_hist.update_hists(self.arr)
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def refresh_image(self):
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self.label.update_image()
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self.update_histograms()
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def scale_mouse_pos(self, x, y):
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width = self.label.pm.width()
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height = self.label.pm.height()
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x_frac = 1. * x / width
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y_frac = 1. * y / height
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width = self.arr.shape[1]
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height = self.arr.shape[0]
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new_x = int(width * x_frac)
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new_y = int(height * y_frac)
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return(new_x, new_y)
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def label_mouseMoveEvent(self, evt):
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x = evt.x()
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y = evt.y()
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x, y = self.scale_mouse_pos(x, y)
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# handle tracking out of array bounds
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maxw = self.arr.shape[1]
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maxh = self.arr.shape[0]
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if x >= maxw or y >= maxh or x < 0 or y < 0:
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r = g = b = h = s = v = ''
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else:
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r = self.arr[y,x,0]
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g = self.arr[y,x,1]
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b = self.arr[y,x,2]
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h, s, v = self.mixer_panel.mixer.rgb_2_hsv_pixel(r, g, b)
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self.rgb_hsv_disp.update_vals((x, y, r, g, b, h, s, v))
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def save_to_stack(self):
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from skimage import io
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img = self.arr.copy()
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io.push(img)
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msg = dedent('''
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The image has been pushed to the io stack.
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Use io.pop() to retrieve the most recently
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pushed image.''')
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msglabel = QLabel(msg)
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dialog = QtGui.QDialog()
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ok = QtGui.QPushButton('OK', dialog)
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ok.clicked.connect(dialog.accept)
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ok.setDefault(True)
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dialog.layout = QtGui.QGridLayout(dialog)
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dialog.layout.addWidget(msglabel, 0, 0, 1, 3)
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dialog.layout.addWidget(ok, 1, 1)
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dialog.exec_()
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def save_to_file(self):
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from skimage import io
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filename = str(QtGui.QFileDialog.getSaveFileName())
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if len(filename) == 0:
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return
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io.imsave(filename, self.arr)
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