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test

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Adminis 2018-03-26 15:03:41 +08:00
parent 18f311db5d
commit 7129d14ea7
1 changed files with 31 additions and 22 deletions
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51
QGraphicsView练习/简单图像处理/SimpleImageView.py
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@ -9,12 +9,20 @@ Created on 2018年3月24日
@file: SimpleImageView
@description: 图片视图
"""
import struct
from time import time
from PIL import Image
from PIL.Image import fromarray
from PIL.ImageQt import fromqpixmap
from PyQt5.QtCore import QStandardPaths, Qt
from PyQt5.QtGui import QColor, QPainter, QPixmap, QImage, qRgb
from PyQt5.QtGui import QColor, QPainter, QPixmap, QImage, qRgb, qRed, qGreen,\
qBlue, QCursor
from PyQt5.QtWidgets import QGraphicsView, QGraphicsScene, QFileDialog, \
QGraphicsItem
import numpy
try:
from PyQt5.QtOpenGL import QGLFormat # , QGL, QGLWidget
hasOpenGL = True
@ -73,19 +81,24 @@ class SimpleImageView(QGraphicsView):
def _scaleImage(self, event):
"""缩放图片操作"""
if not self._itemImage:
item = self._scene.focusItem()
if not item:
item = self._scene.items()
if not item:
return
scale = self._itemImage.scale()
item = item[0]
# 获取item的缩放度
scale = item.scale()
if event.key() == Qt.Key_Plus:
# 放大
if scale >= 0.91:
return
self._itemImage.setScale(scale + 0.1)
item.setScale(scale + 0.1)
elif event.key() == Qt.Key_Minus:
# 缩小
if scale <= 0.11:
return
self._itemImage.setScale(scale - 0.1)
item.setScale(scale - 0.1)
def loadImage(self):
path, _ = QFileDialog.getOpenFileName(
@ -103,7 +116,10 @@ class SimpleImageView(QGraphicsView):
self._itemImage = None
self._itemImage = self._scene.addPixmap(QPixmap(path))
self._itemImage.setFlag(QGraphicsItem.ItemIsMovable)
self._itemImage.setFlag(QGraphicsItem.ItemIsFocusable)
self._itemImage.setScale(0.1) # 默认加载比例
self._scene.setFocusItem(self._itemImage)
print(self._itemImage.zValue())
size = self._itemImage.pixmap().size()
# 调整图片在中间
@ -120,22 +136,15 @@ class SimpleImageView(QGraphicsView):
del self._itemImageNew
self._itemImageNew = None
t = time()
image = self._itemImage.pixmap().toImage()
for y in range(image.height()):
line = image.scanLine(y)
print(dir(line))
print(y,list(line.asarray(y)))
# for x in range(image.width()):
# print()
# print(list(line.asarray(3)))
# for x in range(image.width()):
# for y in range(image.height()):
# color = QColor(image.pixel(x, y))
# average = (color.red() + color.green() + color.blue()) / 3
# image.setPixel(x, y, average)
# self._itemImageNew = self._scene.addPixmap(QPixmap.fromImage(image))
# self._itemImageNew.setFlag(QGraphicsItem.ItemIsMovable)
# self._itemImageNew.setScale(self._itemImage.scale()) # 默认加载比例
# QPixmap 转 PIL Image 转 numpy array
image = numpy.array(fromqpixmap(self._itemImage.pixmap()).convert('L'))
image = fromarray(image).toqpixmap()
self._itemImageNew = self._scene.addPixmap(image)
self._itemImageNew.setFlag(QGraphicsItem.ItemIsFocusable)
self._itemImageNew.setFlag(QGraphicsItem.ItemIsMovable)
self._itemImageNew.setScale(self._itemImage.scale()) # 默认加载比例
self._scene.setFocusItem(self._itemImageNew)
print(self._itemImageNew.zValue())
print(time() - t)