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@frank038
frank038 authored Sep 10, 2022
1 parent 23251ae commit 6718d5c
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218 changes: 66 additions & 152 deletions qt5imageviewer/Qt5ImageViewer.py
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Original file line number Diff line number Diff line change
@@ -1,20 +1,35 @@
#!/usr/bin/python3
# V. 0.7.7
# V. 0.8

from PyQt5.QtCore import Qt, QMimeDatabase, QEvent, QSize
from PyQt5.QtGui import QImage, QPixmap, QPalette, QPainter, QIcon, QTransform, QMovie
from PyQt5.QtGui import QImage, QImageReader, QPixmap, QPalette, QPainter, QIcon, QTransform, QMovie
from PyQt5.QtPrintSupport import QPrintDialog, QPrinter
from PyQt5.QtWidgets import QWidget, QLabel, QSizePolicy, QScrollArea, QMessageBox, QMainWindow, QMenu, QAction, \
qApp, QFileDialog
from PIL import Image, ImageQt
import subprocess
from cfg_imageviewer import *
skip_pil = 0
if with_pil:
from PIL import Image, ImageQt
else:
skip_pil = 1

dialog_filters = 'Images (*.tga *.png *.jpeg *.jpg *.bmp *.gif *.svg *.dds *.eps *.ico *.tiff *.tif *.webp *.wmf *.jp2 *.pbm *.pgm *.ppm *.xbm *.xpm);;All files (*)'
#######
supportedFormats = QImageReader.supportedImageFormats()
fformats_tmp = ""
for fft in supportedFormats:
fformats_tmp += "*."+fft.data().decode()+" "

# python list e.g. ["image/gif", "image/ppm"] - will be used by the pyqt5 decoders
exclude_from_pil = ["image/gif"]
# could be animated
animated_format = ["image/gif"]
if with_pil:
for eel in with_pil:
fft = eel.split("/")[1]
fformats_tmp += "*."+fft+" "

fformats = fformats_tmp[0:-1]

# dialog_filters = 'Images (*.tga *.png *.jpeg *.jpg *.bmp *.gif *.svg *.dds *.eps *.ico *.tiff *.tif *.webp *.wmf *.jp2 *.pbm *.pgm *.ppm *.xbm *.xpm);;All files (*)'
dialog_filters = 'Images ({})'.format(fformats)
#######

WW = 800
HH = 600
Expand Down Expand Up @@ -49,7 +64,10 @@ def __init__(self, ipath):
self.scaleFactor = 0.0
# starting scaling factor
self.scaleFactorStart = 0.0
# for key navigation
self.idx_incr = 0
#
self.is_key_nav = 0
# a gif can be animated
self.is_animated = False
self.ianimated = None
Expand Down Expand Up @@ -92,17 +110,16 @@ def __init__(self, ipath):
if ret == -1:
sys.exit(qApp.closeAllWindows())


def resizeEvent(self, e):
self.WW = self.size().width()
self.HH = self.size().height()


def open(self):
options = QFileDialog.Options()
# fileName, _ = QFileDialog.getOpenFileName(self, 'Open File', os.path.expanduser("~"), dialog_filters, options=options)
fileName, _ = QFileDialog.getOpenFileName(self, 'Open File', self.curr_dir, dialog_filters, options=options)
if fileName:
self.is_key_nav = 0
self.ipath = fileName
ret = self.on_open(self.ipath)
if ret == -1:
Expand All @@ -115,36 +132,33 @@ def on_open(self, fileName):
if self.ianimated:
self.ianimated.stop()
self.ianimated = None
try:
image = Image.open(fileName)
ppixmap = ImageQt.toqpixmap(image)
except Exception as E:
pass
#
image_type = ""
try:
image_type = QMimeDatabase().mimeTypeForFile(fileName, QMimeDatabase.MatchDefault).name()
if image_type in exclude_from_pil:
ppixmap = None
except:
pass
#
if not ppixmap:
try:
if image_type in img_skipped:
if not self.is_key_nav:
QMessageBox.information(self, "Image Viewer", "Cannot load {}.\nSkipped by user.".format(fileName))
return -2
elif (skip_pil == 0) and (image_type in with_pil):
image = Image.open(fileName)
ppixmap = ImageQt.toqpixmap(image)
if not ppixmap:
QMessageBox.information(self, "Image Viewer", "Cannot load {} with PIL.".format(fileName))
return -1
else:
image = QImage(fileName)
if image.isNull():
QMessageBox.information(self, "Image Viewer", "Cannot load %s" % fileName)
return -1
#
# image_type = QMimeDatabase().mimeTypeForFile(fileName, QMimeDatabase.MatchContent).name()
# if image_type == "image/gif":
if not self.is_key_nav:
QMessageBox.information(self, "Image Viewer", "Cannot load {}.".format(fileName))
return -2
if image_type in animated_format:
self.is_animated = True
else:
ppixmap = QPixmap.fromImage(image)
except Exception as E:
QMessageBox.information(self, "Image Viewer", "Error %s." % str(E))
return -1
except Exception as E:
QMessageBox.information(self, "Image Viewer", "Error {}.".format(str(E)))
return -1
#
self.ipath = fileName
# set the working dir
Expand Down Expand Up @@ -232,7 +246,6 @@ def print_(self):
painter.setWindow(self.imageLabel.pixmap().rect())
painter.drawPixmap(0, 0, self.imageLabel.pixmap())


def info_(self):
if self.is_animated:
pw = ""
Expand Down Expand Up @@ -261,19 +274,15 @@ def info_(self):
imime_name = imime.name()
QMessageBox.information(self, "Image Info", "Name: {}\nWidth: {}\nHeight: {}\nDepth: {}\nType: {}".format(os.path.basename(self.ipath), pw, ph, pd, imime_name))


def zoomIn(self):
self.scaleImage(1.25)


def zoomOut(self):
self.scaleImage(0.8)


def normalSize(self):
self.scaleImage(self.scaleFactorStart/self.scaleFactor)


def createActions(self):
self.openAct = QAction("&Open...", self, shortcut="Ctrl+o", triggered=self.open)
self.printAct = QAction("&Print...", self, shortcut="Ctrl+p", enabled=False, triggered=self.print_)
Expand All @@ -290,7 +299,6 @@ def createActions(self):
self.tool2Act = QAction("Tool &2", self, shortcut="Ctrl+2", enabled=True, triggered=self.tool2)
self.tool3Act = QAction("Tool &3", self, shortcut="Ctrl+3", enabled=True, triggered=self.tool3)


def createMenus(self):
self.fileMenu = QMenu("&File", self)
self.fileMenu.addAction(self.openAct)
Expand Down Expand Up @@ -332,8 +340,7 @@ def updateActions(self):
self.normalSizeAct.setEnabled(True)
self.rotateLeftAct.setEnabled(True)
self.rotateRightAct.setEnabled(True)



def scaleImage(self, factor):
self.scaleFactor *= factor
if self.is_animated:
Expand Down Expand Up @@ -373,9 +380,9 @@ def on_close(self):
pass
qApp.quit()


# load the next or previous image in the folder
def keyNav(self, incr_idx):
self.is_key_nav = 1
if self.ianimated:
self.ianimated.stop()
self.ianimated = None
Expand All @@ -394,123 +401,30 @@ def keyNav(self, incr_idx):
def on_open2(self, new_idx, ttype):
len_folder = len(self.directory_content)
if ttype == "i":
self.idx_incr += 1
incr_idx = 1
elif ttype == "d":
self.idx_incr -= 1
incr_idx = -1
ppixmap = None
while not ppixmap:
if new_idx > len_folder - 1:
new_idx = 0
elif new_idx < 0:
new_idx = len_folder - 1
#
nitem = self.directory_content[new_idx]
# fileName = None
fileName = os.path.join(self.curr_dir, nitem)
#
try:
image = Image.open(fileName)
ppixmap = ImageQt.toqpixmap(image)
except Exception as E:
pass
#
image_type = ""
try:
# if os.path.basename(fileName).split(".")[1] in exclude_from_pil:
image_type = QMimeDatabase().mimeTypeForFile(fileName, QMimeDatabase.MatchContent).name()
if image_type in exclude_from_pil:
ppixmap = None
except:
pass
#
if not ppixmap:
try:
image = QImage(fileName)
if image.isNull():
new_idx += incr_idx
else:
if image_type in animated_format:
self.is_animated = True
ppixmap = True
else:
ppixmap = QPixmap.fromImage(image)
except Exception as E:
pass
#
self.ipath = fileName
# set the new working dir
if os.path.dirname(self.ipath) != self.curr_dir:
self.curr_dir = os.path.dirname(self.ipath)
self.directory_content = os.listdir(self.curr_dir)
# set the picture index in the list
self.directory_current_idx = new_idx
#
self.scaleFactor = 1.0
#
if self.is_animated:
self.ianimated = QMovie(fileName)
self.imageLabel.setMovie(self.ianimated)
self.ianimated.start()
#
ppixmap = self.ianimated.currentPixmap()
self.ianimated.stop()
#
image_width = ppixmap.width()
image_height = ppixmap.height()
image_depth = ppixmap.depth()
if image_width >= image_height:
if image_width > self.WW and not image_height > self.HH:
self.scaleFactor = (self.WW-2)/image_width
elif image_height > self.HH:
self.scaleFactor = (self.HH-2-self.menuBar().size().height())/image_height
else:
if image_height > self.HH and not image_width > self.WW:
self.scaleFactor = (self.HH-2-self.menuBar().size().height())/image_height
elif image_width > self.WW:
self.scaleFactor = (self.WW-2)/image_width
self.imageLabel.resize(self.scaleFactor * ppixmap.size())
self.scaleFactorStart = self.scaleFactor
#
self.ianimated.start()
else:
image_width = ppixmap.width()
image_height = ppixmap.height()
image_depth = ppixmap.depth()
#
if image_width >= image_height:
if image_width > self.WW and not image_height > self.HH:
self.scaleFactor = (self.WW-2)/image_width
elif image_height > self.HH:
self.scaleFactor = (self.HH-2-self.menuBar().size().height())/image_height
else:
if image_height > self.HH and not image_width > self.WW:
self.scaleFactor = (self.HH-2-self.menuBar().size().height())/image_height
elif image_width > self.WW:
self.scaleFactor = (self.WW-2)/image_width
#
self.imageLabel.setPixmap(ppixmap)
#
self.imageLabel.resize(self.scaleFactor * self.imageLabel.pixmap().size())
self.scaleFactorStart = self.scaleFactor
#
self.imageLabel.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
#
self.scrollArea.setVisible(True)
self.scrollArea.setAlignment(Qt.AlignHCenter | Qt.AlignVCenter)
#
self.printAct.setEnabled(True)
#
self.updateActions()
self.infoAct.setEnabled(True)
#
self.setWindowTitle("Image Viewer - {} - x{}".format(os.path.basename(self.ipath), round(self.scaleFactor, 2)))
#
if self.is_animated:
self.rotateLeftAct.setEnabled(False)
self.rotateRightAct.setEnabled(False)
else:
self.rotateLeftAct.setEnabled(True)
self.rotateRightAct.setEnabled(True)
if new_idx > len_folder - 1:
new_idx = 0
self.idx_incr = 0
elif new_idx < 0:
new_idx = len_folder - 1
self.idx_incr = 0
#
nitem = self.directory_content[new_idx]
# fileName = None
fileName = os.path.join(self.curr_dir, nitem)
# def on_open(self, fileName):
ret = self.on_open(fileName)
# error in reading a file
if ret == -2:
if ttype == "i":
self.on_open2(new_idx+1, ttype)
elif ttype == "d":
self.on_open2(new_idx-1, ttype)

#
def rotateLeft(self):
Expand Down
7 changes: 4 additions & 3 deletions qt5imageviewer/Qt5ImageViewer.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,8 @@
thisdir=$(dirname "$0")
cd $thisdir
if [[ $# -eq 0 ]]; then
./Qt5ImageViewer.py
python3 Qt5ImageViewer.py &
else
./Qt5ImageViewer.py "$1"
fi
python3 Qt5ImageViewer.py "$1" &
fi
cd $HOME
7 changes: 7 additions & 0 deletions qt5imageviewer/cfg_imageviewer.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
# PIL will be used - python list e.g. ["image/gif", "image/ppm"]
# leave empty to not to use PIL at all: no PIL python binding needed
with_pil = []
# could be animated
animated_format = ["image/gif", "image/webp"]
# image formats to be skipped
img_skipped = []

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