diff --git a/pyqtgraph/widgets/RawImageWidget.py b/pyqtgraph/widgets/RawImageWidget.py index ef1d7a38..43eafeb6 100644 --- a/pyqtgraph/widgets/RawImageWidget.py +++ b/pyqtgraph/widgets/RawImageWidget.py @@ -1,32 +1,43 @@ +# -*- coding: utf-8 -*- +""" +RawImageWidget.py +Copyright 2010-2016 Luke Campagnola +Distributed under MIT/X11 license. See license.txt for more infomation. +""" + from ..Qt import QtCore, QtGui + try: from ..Qt import QtOpenGL from OpenGL.GL import * + HAVE_OPENGL = True -except Exception: +except (ImportError, AttributeError): # Would prefer `except ImportError` here, but some versions of pyopengl generate # AttributeError upon import HAVE_OPENGL = False -from .. import functions as fn -import numpy as np +from .. import getConfigOption, functions as fn + class RawImageWidget(QtGui.QWidget): """ - Widget optimized for very fast video display. + Widget optimized for very fast video display. Generally using an ImageItem inside GraphicsView is fast enough. On some systems this may provide faster video. See the VideoSpeedTest example for benchmarking. """ + def __init__(self, parent=None, scaled=False): """ - Setting scaled=True will cause the entire image to be displayed within the boundaries of the widget. This also greatly reduces the speed at which it will draw frames. + Setting scaled=True will cause the entire image to be displayed within the boundaries of the widget. + This also greatly reduces the speed at which it will draw frames. """ - QtGui.QWidget.__init__(self, parent=None) - self.setSizePolicy(QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding,QtGui.QSizePolicy.Expanding)) + QtGui.QWidget.__init__(self, parent) + self.setSizePolicy(QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)) self.scaled = scaled self.opts = None self.image = None - + def setImage(self, img, *args, **kargs): """ img must be ndarray of shape (x,y), (x,y,3), or (x,y,4). @@ -43,22 +54,22 @@ class RawImageWidget(QtGui.QWidget): argb, alpha = fn.makeARGB(self.opts[0], *self.opts[1], **self.opts[2]) self.image = fn.makeQImage(argb, alpha) self.opts = () - #if self.pixmap is None: - #self.pixmap = QtGui.QPixmap.fromImage(self.image) + # if self.pixmap is None: + # self.pixmap = QtGui.QPixmap.fromImage(self.image) p = QtGui.QPainter(self) if self.scaled: rect = self.rect() ar = rect.width() / float(rect.height()) imar = self.image.width() / float(self.image.height()) if ar > imar: - rect.setWidth(int(rect.width() * imar/ar)) + rect.setWidth(int(rect.width() * imar / ar)) else: - rect.setHeight(int(rect.height() * ar/imar)) - + rect.setHeight(int(rect.height() * ar / imar)) + p.drawImage(rect, self.image) else: p.drawImage(QtCore.QPointF(), self.image) - #p.drawPixmap(self.rect(), self.pixmap) + # p.drawPixmap(self.rect(), self.pixmap) p.end() @@ -67,14 +78,18 @@ if HAVE_OPENGL: """ Similar to RawImageWidget, but uses a GL widget to do all drawing. Perfomance varies between platforms; see examples/VideoSpeedTest for benchmarking. + + Checks if setConfigOptions(imageAxisOrder='row-major') was set. """ + def __init__(self, parent=None, scaled=False): - QtOpenGL.QGLWidget.__init__(self, parent=None) + QtOpenGL.QGLWidget.__init__(self, parent) self.scaled = scaled self.image = None self.uploaded = False self.smooth = False self.opts = None + self.row_major = getConfigOption('imageAxisOrder') == 'row-major' def setImage(self, img, *args, **kargs): """ @@ -88,7 +103,7 @@ if HAVE_OPENGL: def initializeGL(self): self.texture = glGenTextures(1) - + def uploadTexture(self): glEnable(GL_TEXTURE_2D) glBindTexture(GL_TEXTURE_2D, self.texture) @@ -100,17 +115,22 @@ if HAVE_OPENGL: glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST) glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER) glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER) - #glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_BORDER) - shape = self.image.shape - - ### Test texture dimensions first - #glTexImage2D(GL_PROXY_TEXTURE_2D, 0, GL_RGBA, shape[0], shape[1], 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]) - - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, shape[0], shape[1], 0, GL_RGBA, GL_UNSIGNED_BYTE, self.image.transpose((1,0,2))) + # glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_BORDER) + + if self.row_major: + image = self.image + else: + image = self.image.transpose((1, 0, 2)) + + # ## Test texture dimensions first + # shape = self.image.shape + # glTexImage2D(GL_PROXY_TEXTURE_2D, 0, GL_RGBA, shape[0], shape[1], 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]) + + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.shape[1], image.shape[0], 0, GL_RGBA, GL_UNSIGNED_BYTE, image) glDisable(GL_TEXTURE_2D) - + def paintGL(self): if self.image is None: if self.opts is None: @@ -118,26 +138,23 @@ if HAVE_OPENGL: img, args, kwds = self.opts kwds['useRGBA'] = True self.image, alpha = fn.makeARGB(img, *args, **kwds) - + if not self.uploaded: self.uploadTexture() - + glViewport(0, 0, self.width() * self.devicePixelRatio(), self.height() * self.devicePixelRatio()) glEnable(GL_TEXTURE_2D) glBindTexture(GL_TEXTURE_2D, self.texture) - glColor4f(1,1,1,1) + glColor4f(1, 1, 1, 1) glBegin(GL_QUADS) - glTexCoord2f(0,0) - glVertex3f(-1,-1,0) - glTexCoord2f(1,0) + glTexCoord2f(0, 1) + glVertex3f(-1, -1, 0) + glTexCoord2f(1, 1) glVertex3f(1, -1, 0) - glTexCoord2f(1,1) + glTexCoord2f(1, 0) glVertex3f(1, 1, 0) - glTexCoord2f(0,1) + glTexCoord2f(0, 0) glVertex3f(-1, 1, 0) glEnd() glDisable(GL_TEXTURE_3D) - - -