Stefan Champailler writes:
> Hi Jorge,
>
> Would you care to send a shorter version of the code (with the bug, that is)
> ? It'd help us to reproduce it (and it'd help you to better understand it)
>
> Stefan
>
Sure, for a minimal example that you can run, you will require to download the
file attached.
#!/usr/bin/env python2
# coding: utf-8
# VENI, SANCTE SPIRITUS
from PySide.QtWebKit import QWebElement, QWebHitTestResult
from PySide import QtGui
from PySide import QtCore
class WebElement(QtCore.QObject):
""" Holds information of webelements
"""
def __eq__(self, other):
if isinstance(other, WebElement):
return (self.web_element == other.web_element and
self.getrect() == other.getrect())
else:
raise ValueError("Not same objects")
def __ne__(self, other):
if isinstance(other, WebElement):
return (self.web_element != other.web_element and
self.getrect() != other.getrect())
else:
raise ValueError("Not same objects")
def __init__(self, hittestresult, color, parent=None):
super(WebElement, self).__init__(parent)
if (not isinstance(hittestresult, QWebHitTestResult) and
not isinstance(hittestresult, QWebElement)):
raise ValueError(
"Argument passed for 'hittestresult' is not"
" QtWebkit.QWenHitTestResult or QtWebkit.QWebElement instance"
)
if not isinstance(color, QtGui.QColor):
raise ValueError(
"Argument passed for 'color' is not QtGui.QColor instance"
)
try:
self.frame = hittestresult.frame()
except AttributeError:
self.frame = hittestresult.webFrame()
self.frame_scroll_x = self.frame.scrollPosition().x()
self.frame_scroll_y = self.frame.scrollPosition().y()
try:
rect = hittestresult.boundingRect()
except AttributeError:
rect = hittestresult.geometry()
self.element_rect_x = rect.x()
self.element_rect_y = rect.y()
self.element_rect_w = rect.width()
self.element_rect_h = rect.height()
try:
self.web_element = hittestresult.element()
except AttributeError:
self.web_element = hittestresult
self.color = color
self.color_darker = color.darker()
self.color_darker.setAlpha(255)
self.pen = QtGui.QPen(self.color_darker)
self.pen.setWidth(2)
#self.painter = QtGui.QPainter(self.parent)
self.painter = QtGui.QPainter()
self.painter.setPen(self.pen)
def update(self):
""" draw the rect for this element in the CustomQWebView
"""
rect = self.getrect()
rectf = QtCore.QRectF(rect)
self.painter.fillRect(rectf, self.color)
self.painter.drawRect(rectf)
def getrect(self):
""" Return the rect for this WebElement
"""
self.frame_scroll_x = self.frame.scrollPosition().x()
self.frame_scroll_y = self.frame.scrollPosition().y()
rect = QtCore.QRect()
rect.setRect(self.element_rect_x - self.frame_scroll_x,
self.element_rect_y - self.frame_scroll_y,
self.element_rect_w, self.element_rect_h)
return rect
# def contains(self, webelement):
# """ Return true if this WebElement contains the given WebElement
# """
# if not isinstance(webelement, WebElement):
# raise ValueError("Argument passed is not a WebElement instance")
# else:
# return self.getrect().contains(webelement.getrect())
# def amionaiframe(self):
# """ Goes up in the tree of tags until a frame or iframe is found.
# if any iframe or frame is found, then all properties of this WebElement
# instance are filled with the iframe or frame data
# """
# pass
Here is the code that displays the issue, after starting it, just move the
mouse over the web site, here is
the code:
--8<---------------cut here---------------start------------->8---
#!/usr/bin/env python2
# coding: utf-8
# VENI, SANCTE SPIRITUS
from PySide.QtWebKit import QWebView
from PySide import QtCore, QtGui
try:
from . import webelementinfo
except ValueError:
import webelementinfo
class CustomQWebView(QWebView):
def __init__(self, *args, **kwargs):
""" Init the custom class
"""
super(CustomQWebView, self).__init__(*args, **kwargs)
self.colors = {0: QtGui.QColor(255, 165, 0, 127),
1: QtGui.QColor(135, 206, 235, 127),
2: QtGui.QColor(135, 235, 164, 127),
3: QtGui.QColor(235, 135, 206, 127),
4: QtGui.QColor(235, 164, 135, 127)}
self.color = None
self.currentframe = None
self.element = None
self.loadFinished.connect(self.setframeafterloadfinished)
self.selectCommentsArea()
@QtCore.Slot()
def selectCommentsArea(self):
""" For selecting the comment area
"""
self.setup_rectcolor_area(0)
@QtCore.Slot(QtGui.QMouseEvent)
def mouseMoveEvent(self, event):
super(CustomQWebView, self).mouseMoveEvent(event)
if self.drawrects:
if self.currentframe:
hittestresult = self.currentframe.hitTestContent(event.pos())
element = webelementinfo.WebElement(
hittestresult, self.color, self)
if not self.element:
self.element = element
elif self.element != element:
self.element = element
# FIXME: self.update should draw rects from WebElements too.
self.update()
@QtCore.Slot(QtGui.QPaintEvent)
def paintEvent(self, event):
# draw the content first
super(CustomQWebView, self).paintEvent(event)
if self.drawrects:
# then the rectangle
if self.element:
self.element.update()
def setframeafterloadfinished(self):
self.currentframe = self.page().mainFrame()
def setup_rectcolor_area(self, forarea):
"""Called when we want to select certain area of a web site
This method set-up the painter to a giving color so web elements are
drawn with a rect on top. Also activates the flag to allow painting
inside CustomQWebView.
:param int forarea: For which area we are going to set the painter\\
valid values are: 0 for Comments area, 1 for comment box, 2 for\\
commentator's user name, 3 for comment date and time, 4 for\\
commentary text.
"""
self.drawrects = True
self.color = self.colors[forarea]
# defines what we are looking to select
self.selecttype = forarea
if __name__ == "__main__":
app = QtGui.QApplication([])
mainwn = QtGui.QMainWindow()
mainwn.resize(800, 696)
centralwidget = QtGui.QWidget(mainwn)
centralwidget.resize(800, 600)
gridlayout = QtGui.QGridLayout(centralwidget)
web = CustomQWebView(parent=centralwidget) # I do this too in my main
interface code
gridlayout.addWidget(web, 0, 0, 1) # but wasn't a problem before
adding my class WebElement
web.setUrl(QtCore.QUrl("http://duckduckgo.com";))
mainwn.show()
app.exec_()
--8<---------------cut here---------------end--------------->8---
--
Pax et bonum.
Jorge Araya Navarro.
ES: Diseñador Publicitario, Programador Python y colaborador en Parabola
GNU/Linux-libre
EN: Ads Designer, Python programmer and contributor Parabola GNU/Linux-libre
EO: Anonco grafikisto, Pitino programalingvo programisto kai kontribuanto en
Parabola GNU/Linux-libre
https://es.gravatar.com/shackra
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