mirror of
https://github.com/wassname/scikit-image.git
synced 2026-07-12 06:02:49 +08:00
sccolbert
ca051a3e98
Performance is now much better, a bunch of bugs are gone, and it shouldnt throw anymore exceptions.
212 lines
7.7 KiB
Python
212 lines
7.7 KiB
Python
from util import prepare_for_display, window_manager, GuiLockError
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import numpy as np
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import sys
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try:
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# We try to aquire the gui lock first or else the gui import might
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# trample another GUI's PyOS_InputHook.
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window_manager.acquire('qt')
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except GuiLockError, gle:
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print gle
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else:
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try:
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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)
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from PyQt4 import QtCore, QtGui
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from q_color_mixer import MixerPanel
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from q_histogram import QuadHistogram
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except ImportError:
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print 'PyQT4 libraries not installed. Plugin not loaded.'
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window_manager._release('qt')
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else:
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app = None
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class LabelImage(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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def mouseMoveEvent(self, evt):
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self.parent.label_mouseMoveEvent(evt)
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class ImageWindow(QMainWindow):
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def __init__(self, arr, mgr):
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QMainWindow.__init__(self)
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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 = LabelImage(self, arr)
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self.layout.addWidget(self.label, 0, 0)
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self.mgr.add_window(self)
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self.main_widget.show()
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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 label_mouseMoveEvent(self, evt):
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pass
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class RGBHSVDisplay(QWidget):
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def __init__(self):
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QWidget.__init__(self)
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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 FancyImageWindow(ImageWindow):
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def __init__(self, arr, mgr):
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ImageWindow.__init__(self, arr, mgr)
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self.arr = arr
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self.label.setScaledContents(True)
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self.label.setMouseTracking(True)
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self.label.setMinimumSize(QtCore.QSize(100, 100))
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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_variable = QtGui.QPushButton('Save to Variable')
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self.save_file.show()
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self.save_variable.show()
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self.layout.addWidget(self.save_variable, 1, 1)
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self.layout.addWidget(self.save_file, 1, 2)
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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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pm = QPixmap.fromImage(self.label.img)
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self.label.setPixmap(pm)
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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.width()
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height = self.label.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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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 imshow(arr, fancy=False):
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global app
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if not app:
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app = QApplication([])
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arr = prepare_for_display(arr)
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if not fancy:
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iw = ImageWindow(arr, window_manager)
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else:
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iw = FancyImageWindow(arr, window_manager)
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iw.show()
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def _app_show():
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global app
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if app and window_manager.has_windows():
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app.exec_()
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else:
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print 'No images to show. See `imshow`.'
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