我试图处理从 WACOM Intuos ART 数位板生成的 QTabletEvent 事件。
我成功使用了以下代码,但不得不将处理平板电脑事件的 QWidget 调整为完整的 Windows 桌面大小,以便从其所有表面(无论笔位于何处)接收平板电脑事件。默认情况下,平板电脑表面似乎映射到整个桌面。我想将它映射到我自己的小部件客户区。
这个怎么做 ?
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class TabletSampleWindow(QWidget):
def __init__(self, parent=None):
super(TabletSampleWindow, self).__init__(parent)
self.pen_is_down = False
self.pen_x = 0
self.pen_y = 0
self.pen_pressure = 0
self.text = ""
# Resizing the sample window to full desktop size:
frame_rect = app.desktop().frameGeometry()
width, height = frame_rect.width(), frame_rect.height()
self.resize(width, height)
self.move(-9, 0)
self.setWindowTitle("Sample Tablet Event Handling")
def tabletEvent(self, tabletEvent):
self.pen_x = tabletEvent.globalX()
self.pen_y = tabletEvent.globalY()
self.pen_pressure = int(tabletEvent.pressure() * 100)
if tabletEvent.type() == QTabletEvent.TabletPress:
self.pen_is_down = True
self.text = "TabletPress event"
elif tabletEvent.type() == QTabletEvent.TabletMove:
self.pen_is_down = True
self.text = "TabletMove event"
elif tabletEvent.type() == QTabletEvent.TabletRelease:
self.pen_is_down = False
self.text = "TabletRelease event"
self.text += " at x={0}, y={1}, pressure={2}%,".format(self.pen_x, self.pen_y, self.pen_pressure)
if self.pen_is_down:
self.text += " Pen is down."
else:
self.text += " Pen is up."
tabletEvent.accept()
self.update()
def paintEvent(self, event):
text = self.text
i = text.find("\n\n")
if i >= 0:
text = text.left(i)
painter = QPainter(self)
painter.setRenderHint(QPainter.TextAntialiasing)
painter.drawText(self.rect(), Qt.AlignTop | Qt.AlignLeft , text)
app = QApplication(sys.argv)
mainform = TabletSampleWindow()
mainform.show()
app.exec_()