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