code first:
class MyWidget(QMainWindow)
def __init__(self):
super(MyWidget, self).__init__()
self.setMinimumSize(900, 500)
self.setMouseTracking(True)
def mousePressEvent(self, e):
if e.buttons() == Qt.LeftButton:
print('left pressed')
elif e.buttons() == Qt.RightButton:
print('right pressed')
else:
print('other button pressed')
def mouseReleaseEvent(self, e):
if e.buttons() == Qt.LeftButton:
print('left up')
elif e.buttons() == Qt.RightButton:
print('right up')
else:
print('other up')
just press the LEFT button, it outputs 'left pressed', but when release the LEFT button, it outputs 'other up', instead of 'left up'!!
it happens to the RIGHT button in the same way.
Just use e.button() instead of e.buttons()
Related
I tried to add videowidget to QFrame inside QstackedWidget but when i use QMediaPlayer.setVideoOutput the program run but
frozen, when i click on the window it just give beeping sound. when i comment the setVideoOutput it
run just fine.
`class halaman_belajar(QWidget):
def init(self):
super().init()
uic.loadUi(".\Asset\GuiHalamanBelajar.ui", self)
self.kembali_menu.clicked.connect(self.kembali)
self.kembali_menu.setCursor(QCursor(Qt.PointingHandCursor))
self.kembali_menu.setShortcut("esc")
self.bab_selanjutnya.clicked.connect(self.selanjutnya)
self.bab_selanjutnya.setCursor(QCursor(Qt.PointingHandCursor))
self.bab_selanjutnya.setShortcut(Qt.Key_Right)
self.bab_sebelumnya.clicked.connect(self.sebelumnya)
self.bab_sebelumnya.setCursor(QCursor(Qt.PointingHandCursor))
self.bab_sebelumnya.setShortcut(Qt.Key_Left)
self.halaman_isi.setCurrentIndex(0)
self.bab_sebelumnya.setEnabled(False)
if self.halaman_isi.currentIndex == 0:
self.bab_sebelumnya.setEnabled(False)
else:
self.bab_sebelumnya.setEnabled(True)
#Combo Box
self.pintasan_halaman.activated.connect(self.pintasanhalaman)
#video player
video = QVideoWidget()
self.videoproklamasi = QMediaPlayer(None, QMediaPlayer.VideoSurface)
self.videoproklamasi.setMedia(QMediaContent(QUrl.fromLocalFile("E:\ProjectHistoryApp\Asset\proklamasi.mp4")))
#self.videoproklamasi.setVideoOutput(video)
self.play = QPushButton()
self.play.setIcon(self.style().standardIcon(QStyle.SP_MediaPlay))
#self.play.clicked.connect(self.mulaivideo)
self.slider= QSlider(Qt.Horizontal)
self.slider.setRange(0,0)
self.wadahnisor = QHBoxLayout()
self.wadahnisor.setContentsMargins(0,0,0,0)
self.wadahnisor.addWidget(self.play)
self.wadahnisor.addWidget(self.slider)
self.wadahvideo = QVBoxLayout(self.isi_video)
self.wadahvideo.addWidget(video)
self.wadahvideo.addLayout(self.wadahnisor)
def kembali(self):
pesan2 = QMessageBox()
pesan2.setWindowTitle("Status")
pesan2.setText("Kembali Ke Menu?")
pesan2.setWindowIcon(QIcon(".\Asset\Mascot.png"))
pesan2.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
hasil = pesan2.exec()
if hasil == QMessageBox.Yes:
show_halaman.setCurrentIndex(show_halaman.currentIndex() - 1)
def selanjutnya(self):
self.halaman_isi.setCurrentIndex(self.halaman_isi.currentIndex() + 1)
self.bab_sebelumnya.setEnabled(True)
#if halaman_isi.currentIndex == 10:
#self.bab_selanjutnya.setEnabled(False)
def sebelumnya(self):
self.halaman_isi.setCurrentIndex(self.halaman_isi.currentIndex() - 1)
if self.halaman_isi.currentIndex() == 0:
self.bab_sebelumnya.setEnabled(False)
def pintasanhalaman(self):
self.halaman_isi.setCurrentIndex(self.pintasan_halaman.currentIndex())
if self.halaman_isi.currentIndex() != 0:
self.bab_sebelumnya.setEnabled(True)
def mulaivideo(self):
if self.videoproklamasi.state() == QMediaPlayer.PlayingState():
self.videoproklamasi.pause()
else:
self.videoproklamasi.play()`
I would like to show two images next to each other, such that when I zoom or pan on one image the other image follows along. My current approach is to emit a viewUpdated event after resolving mouse events. The event contains the viewportTransformation and is used to update the transform in the other view. This sort of works for the zoom part, but panning does not work.
The code below is based on the qt5 version provided in this answer: https://stackoverflow.com/a/35514531/185475
from PyQt5 import QtCore, QtGui, QtWidgets
# Code from https://stackoverflow.com/a/35514531
class PhotoViewer(QtWidgets.QGraphicsView):
photoClicked = QtCore.pyqtSignal(QtCore.QPoint)
viewUpdated = QtCore.pyqtSignal(QtGui.QTransform)
def __init__(self, parent):
super(PhotoViewer, self).__init__(parent)
self._zoom = 0
self._empty = True
self._scene = QtWidgets.QGraphicsScene(self)
self._photo = QtWidgets.QGraphicsPixmapItem()
self._scene.addItem(self._photo)
self.setScene(self._scene)
self.setTransformationAnchor(QtWidgets.QGraphicsView.AnchorUnderMouse)
self.setResizeAnchor(QtWidgets.QGraphicsView.AnchorUnderMouse)
self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
self.setBackgroundBrush(QtGui.QBrush(QtGui.QColor(30, 30, 30)))
self.setFrameShape(QtWidgets.QFrame.NoFrame)
def hasPhoto(self):
return not self._empty
def fitInView(self, scale=True):
rect = QtCore.QRectF(self._photo.pixmap().rect())
if not rect.isNull():
self.setSceneRect(rect)
if self.hasPhoto():
unity = self.transform().mapRect(QtCore.QRectF(0, 0, 1, 1))
self.scale(1 / unity.width(), 1 / unity.height())
viewrect = self.viewport().rect()
scenerect = self.transform().mapRect(rect)
factor = min(viewrect.width() / scenerect.width(),
viewrect.height() / scenerect.height())
self.scale(factor, factor)
self._zoom = 0
def setPhoto(self, pixmap=None):
self._zoom = 0
if pixmap and not pixmap.isNull():
self._empty = False
self.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag)
self._photo.setPixmap(pixmap)
else:
self._empty = True
self.setDragMode(QtWidgets.QGraphicsView.NoDrag)
self._photo.setPixmap(QtGui.QPixmap())
self.fitInView()
def wheelEvent(self, event):
if self.hasPhoto():
if event.angleDelta().y() > 0:
factor = 1.25
self._zoom += 1
else:
factor = 0.8
self._zoom -= 1
if self._zoom > 0:
self.scale(factor, factor)
elif self._zoom == 0:
self.fitInView()
else:
self._zoom = 0
self.viewUpdated.emit(self.viewportTransform())
def toggleDragMode(self):
if self.dragMode() == QtWidgets.QGraphicsView.ScrollHandDrag:
self.setDragMode(QtWidgets.QGraphicsView.NoDrag)
elif not self._photo.pixmap().isNull():
self.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag)
def mousePressEvent(self, event):
if self._photo.isUnderMouse():
self.photoClicked.emit(self.mapToScene(event.pos()).toPoint())
super(PhotoViewer, self).mousePressEvent(event)
self.viewUpdated.emit(self.viewportTransform())
def set_transform(self, transform):
self.setTransform(transform)
class Window(QtWidgets.QWidget):
def __init__(self):
super(Window, self).__init__()
self.viewer = PhotoViewer(self)
self.viewerSecondImage = PhotoViewer(self)
self.viewer.viewUpdated.connect(self.viewerSecondImage.set_transform)
self.viewerSecondImage.viewUpdated.connect(self.viewer.set_transform)
# 'Load image' button
self.btnLoad = QtWidgets.QToolButton(self)
self.btnLoad.setText('Load image')
self.btnLoad.clicked.connect(self.loadImage)
# Button to change from drag/pan to getting pixel info
self.btnPixInfo = QtWidgets.QToolButton(self)
self.btnPixInfo.setText('Enter pixel info mode')
self.btnPixInfo.clicked.connect(self.pixInfo)
self.editPixInfo = QtWidgets.QLineEdit(self)
self.editPixInfo.setReadOnly(True)
self.viewer.photoClicked.connect(self.photoClicked)
# Arrange layout
VBlayout = QtWidgets.QVBoxLayout(self)
HBlayoutImageViewers = QtWidgets.QHBoxLayout()
HBlayoutImageViewers.addWidget(self.viewer)
HBlayoutImageViewers.addWidget(self.viewerSecondImage)
VBlayout.addLayout(HBlayoutImageViewers)
HBlayout = QtWidgets.QHBoxLayout()
HBlayout.setAlignment(QtCore.Qt.AlignLeft)
HBlayout.addWidget(self.btnLoad)
HBlayout.addWidget(self.btnPixInfo)
HBlayout.addWidget(self.editPixInfo)
VBlayout.addLayout(HBlayout)
def loadImage(self):
self.viewer.setPhoto(QtGui.QPixmap('input/490px-Dostojka_adype.jpg'))
self.viewerSecondImage.setPhoto(QtGui.QPixmap('input/490px-Dostojka_adype.jpg'))
def pixInfo(self):
self.viewer.toggleDragMode()
def photoClicked(self, pos):
if self.viewer.dragMode() == QtWidgets.QGraphicsView.NoDrag:
self.editPixInfo.setText('%d, %d' % (pos.x(), pos.y()))
if __name__ == '__main__':
import sys
app = QtWidgets.QApplication(sys.argv)
window = Window()
window.setGeometry(500, 300, 800, 600)
window.show()
sys.exit(app.exec_())
You only need to syncronize scrollbar values of two QGraphicsViews
def bindScrollBars(scrollBar1, scrollBar2):
# syncronizing scrollbars syncrnonously somehow breaks zooming and doesn't work
# scrollBar1.valueChanged.connect(lambda value: scrollBar2.setValue(value))
# scrollBar2.valueChanged.connect(lambda value: scrollBar1.setValue(value))
# syncronizing scrollbars asyncronously works ok
scrollBar1.valueChanged.connect(lambda _: QtCore.QTimer.singleShot(0, lambda: scrollBar2.setValue(scrollBar1.value())))
scrollBar2.valueChanged.connect(lambda _: QtCore.QTimer.singleShot(0, lambda: scrollBar1.setValue(scrollBar2.value())))
class Window(QtWidgets.QWidget):
def __init__(self):
...
bindScrollBars(self.viewer.horizontalScrollBar(), self.viewerSecondImage.horizontalScrollBar())
bindScrollBars(self.viewer.verticalScrollBar(), self.viewerSecondImage.verticalScrollBar())
Also wheelEvent can be simplified
def wheelEvent(self, event):
if self.hasPhoto():
factor = 1.25
if event.angleDelta().y() > 0:
self.scale(factor, factor)
else:
self.scale(1/factor, 1/factor)
self.viewUpdated.emit(self.transform())
I'm new in PyQt5. I made a tabWidget where I was able to connect a button to add tabs dynamically and remove/close them. Before inserting tabs with button.Clicked, there's one open (already inserted) tab saying "no tabs are open". I would like to close this tab after inserting a new tab and reopen the tab after closing all new tabs (when no tabs are open). I couldn't find any example on how to use QTabWidget::tabInserted(int index) from http://doc.qt.io/qt-5/qtabwidget.html. Does anyone know how to use tabInserted and tabRemoved to detect when triggered. I would like to increment each time a tab is inserted and decrement when removed, to know when there are open tabs and no open tabs. Thanks
self.toolButton.clicked.connect(self.button_addtab)
self.tabWidget.tabCloseRequested.connect(self.close_tab)
def button_addtab(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
self.tab_2 = QtWidgets.QWidget()
self.tab_2.setObjectName("tab_2")
self.tabWidget.addTab(self.tab_2, "")
self.tabWidget.setCurrentIndex(pages-0)
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_2), _translate("MainWindow", "Second_tab"))
def close_tab(self, index):
self.tabWidget.removeTab(index)
I tried this:
if self.tabWidget.count() <= 0:
#Add the "no tab open" tab
self.tab_3 = QtWidgets.QWidget()
self.tab_3.setObjectName("tab_3")
self.tabWidget.addTab(self.tab_3, "")
_translate = QtCore.QCoreApplication.translate
self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_3), _translate("MainWindow", "Info"))
elif self.tabWidget.count() > 0:
self.tabWidget.removeTab(self.tabWidget.indexOf(self.tab_3))
This work, but it doesn't add after closing and it reopens after one more tab is added. That's why I would like to use tabInserted
See class TabWidget
import sys
from PyQt5.QtCore import Qt, QRect
from PyQt5.QtGui import QColor, QPainter
from PyQt5.QtWidgets import (QApplication, QWidget, QMainWindow, QAction,
QVBoxLayout, QTabWidget, QFileDialog, QPlainTextEdit, QHBoxLayout)
lineBarColor = QColor(53, 53, 53)
lineHighlightColor = QColor('#00FF04')
class TabWidget(QTabWidget):
def __init__(self, parent=None):
super(TabWidget, self).__init__(parent)
# This virtual handler is called after a tab was removed from position index.
def tabRemoved(self, index):
print("\n tab was removed from position index -> {}".format(index))
# This virtual handler is called after a new tab was added or inserted at position index.
def tabInserted(self, index):
print("\n New tab was added or inserted at position index -> {}".format(index))
class NumberBar(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.editor = parent
layout = QVBoxLayout(self)
self.editor.blockCountChanged.connect(self.update_width)
self.editor.updateRequest.connect(self.update_on_scroll)
self.update_width('001')
def mousePressEvent(self, QMouseEvent):
print("\n - class NumberBar(QWidget): \n\tdef mousePressEvent(self, QMouseEvent):")
def update_on_scroll(self, rect, scroll):
if self.isVisible():
if scroll:
self.scroll(0, scroll)
else:
self.update()
def update_width(self, string):
width = self.fontMetrics().width(str(string)) + 10
if self.width() != width:
self.setFixedWidth(width)
def paintEvent(self, event):
if self.isVisible():
block = self.editor.firstVisibleBlock()
height = self.fontMetrics().height()
number = block.blockNumber()
painter = QPainter(self)
painter.fillRect(event.rect(), lineBarColor)
painter.setPen(Qt.white)
painter.drawRect(0, 0, event.rect().width() - 1, event.rect().height() - 1)
font = painter.font()
current_block = self.editor.textCursor().block().blockNumber() + 1
while block.isValid():
block_geometry = self.editor.blockBoundingGeometry(block)
offset = self.editor.contentOffset()
block_top = block_geometry.translated(offset).top()
number += 1
rect = QRect(0, block_top, self.width() - 5, height)
if number == current_block:
font.setBold(True)
else:
font.setBold(False)
painter.setFont(font)
painter.drawText(rect, Qt.AlignRight, '%i' % number)
if block_top > event.rect().bottom():
break
block = block.next()
painter.end()
class Content(QWidget):
def __init__(self, text):
super(Content, self).__init__()
self.editor = QPlainTextEdit()
self.editor.setPlainText(text)
# Create a layout for the line numbers
self.hbox = QHBoxLayout(self)
self.numbers = NumberBar(self.editor)
self.hbox.addWidget(self.numbers)
self.hbox.addWidget(self.editor)
class MyTableWidget(QWidget):
def __init__(self, parent=None):
super(QWidget, self).__init__(parent)
self.layout = QVBoxLayout(self)
# Initialize tab screen
self.tabs = TabWidget() #QTabWidget()
self.tabs.resize(300, 200)
# Add tabs
self.tabs.setTabsClosable(True)
self.tabs.tabCloseRequested.connect(self.closeTab)
# Add tabs to widget
self.layout.addWidget(self.tabs)
self.setLayout(self.layout)
def closeTab(self, index):
tab = self.tabs.widget(index)
tab.deleteLater()
self.tabs.removeTab(index)
def addtab(self, content, fileName):
self.tabs.addTab(Content(str(content)), str(fileName))
class Main(QMainWindow):
def __init__(self, parent=None):
super(Main, self).__init__(parent)
self.open()
self.tabs = MyTableWidget()
self.setCentralWidget(self.tabs)
self.initUI()
self.show()
def initUI(self):
self.statusBar()
menu = self.menuBar()
fileMenu = menu.addMenu('File')
fileMenu.addAction(self.openAct)
self.resize(800, 600)
def closeTab(self, index):
tab = self.tabs.widget(index)
tab.deleteLater()
self.tabs.removeTab(index)
def buttonClicked(self):
self.tabs.addTab(Content("smalltext2"), "sadsad")
def open(self):
self.openAct = QAction('Open...', self)
self.openAct.setShortcut('Ctrl+O')
self.openAct.setStatusTip('Open a file')
self.is_opened = False
self.openAct.triggered.connect(self.openFile)
def openFile(self):
options = QFileDialog.Options()
filenames, _ = QFileDialog.getOpenFileNames(
self, 'Open a file', '',
'Python Files (*.py);;Text Files (*.txt)',
options=options
)
if filenames:
for filename in filenames:
with open(filename, 'r+') as file_o:
try:
text = file_o.read()
self.tabs.addtab(text, filename)
except Exception as e:
print("Error: filename=`{}`, `{}` ".format( filename, str(e)))
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = Main()
sys.exit(app.exec_())
I'd like to set my rows to a fixed height. I've found an example using QAbstractItemModel, but I'm using QStandardItemModel. When I run the app, the QTreeView is blank. Any thoughts on how I could get this working for a QStandardItemModel?
import sys
from PySide import QtCore, QtGui
class TreeItem(object):
def __init__(self, data, parent=None):
self.parentItem = parent
self.data = data
self.childItems = []
def appendChild(self, item):
self.childItems.append(item)
def row(self):
if self.parentItem:
return self.parentItem.childItems.index(self)
return 0
class TreeModel(QtCore.QAbstractItemModel):
def __init__(self, parent=None):
super(TreeModel, self).__init__(parent)
self.rootItem = TreeItem(None)
for i, c in enumerate("abcdefg"):
child = TreeItem([i, c], self.rootItem)
self.rootItem.appendChild(child)
parent = self.rootItem.childItems[1]
child = TreeItem(["down", "down"], parent)
parent.appendChild(child)
def columnCount(self, parent):
return 2
def data(self, index, role):
if not index.isValid():
return None
if role == QtCore.Qt.DisplayRole:
item = index.internalPointer()
return item.data[index.column()]
elif role == QtCore.Qt.SizeHintRole:
print "giving size hint"
return QtCore.QSize(10, 10)
return None
def flags(self, index):
if not index.isValid():
return QtCore.Qt.NoItemFlags
return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
def headerData(self, section, orientation, role):
if orientation == QtCore.Qt.Horizontal and role == QtCore.Qt.DisplayRole:
return ["A", "B"][section]
return None
def index(self, row, column, parent):
if not self.hasIndex(row, column, parent):
return QtCore.QModelIndex()
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
childItem = parentItem.childItems[row]
if childItem:
return self.createIndex(row, column, childItem)
else:
return QtCore.QModelIndex()
def parent(self, index):
if not index.isValid():
return QtCore.QModelIndex()
parentItem = index.internalPointer().parentItem
if parentItem == self.rootItem:
return QtCore.QModelIndex()
return self.createIndex(parentItem.row(), 0, parentItem)
def rowCount(self, parent):
if parent.column() > 0:
return 0
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
return len(parentItem.childItems)
if __name__ == '__main__':
app = QtGui.QApplication(sys.argv)
model = TreeModel()
view = QtGui.QTreeView()
view.setModel(model)
view.setWindowTitle("Simple Tree Model")
view.show()
sys.exit(app.exec_())
Also, I've been looking around for the meaning of the term delegate in Qt, but the concept still isn't clicking in my head yet. Any insight into that would be appreciated as well!
You generally do this using QItemDelegates (or QStyledItemDelegate if you want stylesheet styling to work) by overriding the sizeHint method and always returning a size of a fixed height.
class MyDelegate(QtGui.QStyledItemDelegate):
def sizeHint(self, option, index):
my_fixed_height = 30
size = super(MyDelegate, self).sizeHint(option, index)
size.setHeight(my_fixed_height)
return size
view = QtGui.QTreeView()
delegate = MyDelegate()
view.setItemDelegate(delegate)
I am working on a simple game and with small circle "systems". I would like to be able to click each system so that I can do more with it later in game but I am having difficulty recognizing only a single click. I pass the randomly generated coords to a dictionary and then the collision for each rect should be checked with the mouse position but for some reason that is not working anymore. Any help is appreciated.
Here is some of the more relevent code.
for i in range(NumSystems):
SysSize = random.randint(3,SystemSize)
SysY = random.randint(SystemSize*2,GVPHEIGHT-SystemSize*2)
SysX = random.randint(OverLayWidth+SystemSize*2,WINWIDTH-SystemSize*2)
SysList[str('SysNum')+str(i)] = ((SysSize,(SysX,SysY)))
SysCoords[str('SysNum')+str(i)] = pygame.draw.circle(DISPLAYSURF, WHITE, (SysX,SysY), SysSize, 0)
pygame.display.update()
#time.sleep(.25)
#Code above is putting the random Coords into a dictionary.
while True:
MousePos=mouse.get_pos()
for event in pygame.event.get():
if event.type == QUIT:
pygame.QUIT()
sys.exit()
elif event.type == KEYDOWN:
# Handle key presses
if event.key == K_RETURN:
#Restarts the map
main()
elif event.type == MOUSEBUTTONDOWN:
if event.button == 1:
SysClicky(MousePos)
if SysClicked == True:
print('Clicked System')
elif SysClicked == False:
print('Something Else Clicked')
def SysClicky(MousePos):
for i in range(NumSystems):
print('Made to the SysClicky bit')
if SysCoords['SysNum'+str(i)].collidepoint(MousePos):
SysClicked = True
print(SysClicked)
return SysClicked
else:
SysClicked = False
return SysClicked
I'm not clear on What SysList / SysX/Y, SysCoords are. Does it hold width,height of the items in SysCoords? If so, that's already in Rect()
below systems is your dict of Rects.
Here's the code:
def check_collisions(pos):
# iterate dict, check for collisions in systems
for k,v in systems.items():
if v.collidepoint(pos):
print("clicked system:", k)
return
print("clicked something else")
while True:
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
elif event.type == MOUSEBUTTONDOWN:
if event.button == 1:
check_collisions(event.pos)
# render
Pygame rect objects have a collidepoint inbuilt method which takes a coordinate and returns a boolean based on collision. You can input the mouses coordinate into function like so:
MousePos=mouse.get_pos()
if mySurface.get_rect().collidepoint(MousePos):
doSomething()