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Book details: Add actions to trim the cover to the right-click menu. Fixes #1961129 [[Enhancement] Action to trim cover borders in context menu of Book details panel](https://bugs.launchpad.net/calibre/+bug/1961129)

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Kovid Goyal 2022-02-17 11:02:29 +05:30
parent 4f92e975bf
commit c0e7520954
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1 changed files with 47 additions and 3 deletions
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src/calibre/gui2/book_details.py
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@ -7,9 +7,10 @@ import re
from collections import namedtuple from collections import namedtuple
from functools import partial from functools import partial
from qt.core import ( from qt.core import (
QAction, QApplication, QColor, QEasingCurve, QIcon, QKeySequence, QLayout, QMenu, QAction, QApplication, QClipboard, QColor, QDialog, QEasingCurve, QIcon,
QMimeData, QPainter, QPen, QPixmap, QPropertyAnimation, QRect, QSize, QClipboard, QKeySequence, QLayout, QMenu, QMimeData, QPainter, QPen, QPixmap,
QSizePolicy, Qt, QUrl, QWidget, pyqtProperty, pyqtSignal QPropertyAnimation, QRect, QSize, QSizePolicy, Qt, QUrl, QWidget, pyqtProperty,
pyqtSignal
) )
from calibre import fit_image, sanitize_file_name from calibre import fit_image, sanitize_file_name
@ -517,6 +518,7 @@ class CoverView(QWidget): # {{{
self.pixmap = self.default_pixmap self.pixmap = self.default_pixmap
self.pwidth = self.pheight = None self.pwidth = self.pheight = None
self.data = {} self.data = {}
self.last_trim_id = self.last_trim_pixmap = None
self.do_layout() self.do_layout()
@ -605,6 +607,15 @@ class CoverView(QWidget): # {{{
remove = cm.addAction(QIcon.ic('trash.png'), _('Remove cover')) remove = cm.addAction(QIcon.ic('trash.png'), _('Remove cover'))
gc = cm.addAction(QIcon.ic('default_cover.png'), _('Generate cover from metadata')) gc = cm.addAction(QIcon.ic('default_cover.png'), _('Generate cover from metadata'))
cm.addSeparator() cm.addSeparator()
if self.pixmap is not self.default_pixmap and self.data.get('id'):
book_id = self.data['id']
cm.tc = QMenu(_('Trim cover'))
cm.tc.addAction(QIcon.ic('trim.png'), _('Automatically trim borders'), self.trim_cover)
cm.tc.addAction(_('Trim borders manually'), self.manual_trim_cover)
cm.tc.addSeparator()
cm.tc.addAction(QIcon.ic('edit-undo.png'), _('Undo last trim'), self.undo_last_trim).setEnabled(self.last_trim_id == book_id)
cm.addMenu(cm.tc)
cm.addSeparator()
if not QApplication.instance().clipboard().mimeData().hasImage(): if not QApplication.instance().clipboard().mimeData().hasImage():
paste.setEnabled(False) paste.setEnabled(False)
copy.triggered.connect(self.copy_to_clipboard) copy.triggered.connect(self.copy_to_clipboard)
@ -617,6 +628,39 @@ class CoverView(QWidget): # {{{
cm.addMenu(m) cm.addMenu(m)
cm.exec(ev.globalPos()) cm.exec(ev.globalPos())
def trim_cover(self):
book_id = self.data.get('id')
if not book_id:
return
from calibre.utils.img import image_from_x, remove_borders_from_image
img = image_from_x(self.pixmap)
nimg = remove_borders_from_image(img)
if nimg is not img:
self.last_trim_id = book_id
self.last_trim_pixmap = self.pixmap
self.update_cover(QPixmap.fromImage(nimg))
def manual_trim_cover(self):
book_id = self.data.get('id')
if not book_id:
return
from calibre.gui2.dialogs.trim_image import TrimImage
from calibre.utils.img import image_to_data
cdata = image_to_data(image_from_x(self.pixmap), fmt='PNG', png_compression_level=1)
d = TrimImage(cdata, parent=self)
if d.exec() == QDialog.DialogCode.Accepted and d.image_data is not None:
self.last_trim_id = book_id
self.last_trim_pixmap = self.pixmap
self.update_cover(cdata=d.image_data)
def undo_last_trim(self):
book_id = self.data.get('id')
if not book_id or book_id != self.last_trim_id:
return
pmap = self.last_trim_pixmap
self.last_trim_pixmap = self.last_trim_id = None
self.update_cover(pmap)
def open_with(self, entry): def open_with(self, entry):
id_ = self.data.get('id', None) id_ = self.data.get('id', None)
if id_ is not None: if id_ is not None: