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Image popup: Add a context menu with an option to reset the current zoom. Fixes #2080315 [[Enhancement] Image viewer: View image at 100%](https://bugs.launchpad.net/calibre/+bug/2080315)

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Kovid Goyal 2024-09-11 16:33:55 +05:30
parent 2cdb738d90
commit f4a4f19786
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1 changed files with 45 additions and 18 deletions
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63
src/calibre/gui2/image_popup.py
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@ -16,6 +16,7 @@ from qt.core import (
QImage,
QKeySequence,
QLabel,
QMenu,
QPainter,
QPalette,
QPixmap,
@ -140,14 +141,25 @@ class ImageView(QDialog):
self.current_url = current_url
self.factor = 1.0
self.geom_name = geom_name
self.zoom_in_action = ac = QAction(self)
self.zoom_in_action = ac = QAction(QIcon.ic('plus.png'), _('Zoom &in'), self)
ac.triggered.connect(self.zoom_in)
ac.setShortcuts([QKeySequence(QKeySequence.StandardKey.ZoomIn), QKeySequence('+', QKeySequence.SequenceFormat.PortableText)])
self.addAction(ac)
self.zoom_out_action = ac = QAction(self)
self.zoom_out_action = ac = QAction(QIcon.ic('minus.png'), _('Zoom &out'), self)
ac.triggered.connect(self.zoom_out)
ac.setShortcuts([QKeySequence(QKeySequence.StandardKey.ZoomOut), QKeySequence('-', QKeySequence.SequenceFormat.PortableText)])
self.addAction(ac)
self.reset_zoom_action = ac = QAction(QIcon.ic('edit-undo.png'), _('Reset &zoom'), self)
ac.triggered.connect(self.reset_zoom)
ac.setShortcuts([QKeySequence('=', QKeySequence.SequenceFormat.PortableText)])
self.addAction(ac)
self.copy_action = ac = QAction(QIcon.ic('edit-copy.png'), _('&Copy'), self)
ac.setShortcuts([QKeySequence(QKeySequence.StandardKey.Copy)])
self.addAction(ac)
ac.triggered.connect(self.copy_image)
self.rotate_action = ac = QAction(QIcon.ic('rotate-right.png'), _('&Rotate'), self)
self.addAction(ac)
ac.triggered.connect(self.rotate_image)
self.scrollarea = sa = ScrollArea()
sa.setAlignment(Qt.AlignmentFlag.AlignHCenter | Qt.AlignmentFlag.AlignVCenter)
@ -160,26 +172,22 @@ class ImageView(QDialog):
self.bb = bb = QDialogButtonBox(QDialogButtonBox.StandardButton.Close)
bb.accepted.connect(self.accept)
bb.rejected.connect(self.reject)
self.zi_button = zi = bb.addButton(_('Zoom &in'), QDialogButtonBox.ButtonRole.ActionRole)
self.zo_button = zo = bb.addButton(_('Zoom &out'), QDialogButtonBox.ButtonRole.ActionRole)
self.zi_button = zi = bb.addButton(self.zoom_in_action.text(), QDialogButtonBox.ButtonRole.ActionRole)
self.zo_button = zo = bb.addButton(self.zoom_out_action.text(), QDialogButtonBox.ButtonRole.ActionRole)
self.save_button = so = bb.addButton(_('&Save as'), QDialogButtonBox.ButtonRole.ActionRole)
self.copy_button = co = bb.addButton(_('&Copy'), QDialogButtonBox.ButtonRole.ActionRole)
self.rotate_button = ro = bb.addButton(_('&Rotate'), QDialogButtonBox.ButtonRole.ActionRole)
self.copy_button = co = bb.addButton(self.copy_action.text(), QDialogButtonBox.ButtonRole.ActionRole)
self.rotate_button = ro = bb.addButton(self.rotate_action.text(), QDialogButtonBox.ButtonRole.ActionRole)
self.fullscreen_button = fo = bb.addButton(_('F&ull screen'), QDialogButtonBox.ButtonRole.ActionRole)
zi.setIcon(QIcon.ic('plus.png'))
zo.setIcon(QIcon.ic('minus.png'))
zi.setIcon(self.zoom_in_action.icon())
zo.setIcon(self.zoom_out_action.icon())
so.setIcon(QIcon.ic('save.png'))
co.setIcon(QIcon.ic('edit-copy.png'))
ro.setIcon(QIcon.ic('rotate-right.png'))
co.setIcon(self.copy_action.icon())
ro.setIcon(self.rotate_action.icon())
fo.setIcon(QIcon.ic('page.png'))
zi.clicked.connect(self.zoom_in)
zo.clicked.connect(self.zoom_out)
zi.clicked.connect(self.zoom_in_action.trigger)
zo.clicked.connect(self.zoom_out_action.trigger)
so.clicked.connect(self.save_image)
co.clicked.connect(self.copy_image)
self.copy_action = QAction(self)
self.addAction(self.copy_action)
self.copy_action.triggered.connect(self.copy_button.click)
self.copy_action.setShortcut(QKeySequence.StandardKey.Copy)
co.clicked.connect(self.copy_action.trigger)
ro.clicked.connect(self.rotate_image)
fo.setCheckable(True)
@ -205,6 +213,17 @@ class ImageView(QDialog):
self.restore_geometry(self.prefs, self.geom_name)
fo.setChecked(self.isFullScreen())
fo.toggled.connect(self.toggle_fullscreen)
self.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
self.customContextMenuRequested.connect(self.context_menu)
def context_menu(self, pos):
m = QMenu(self)
m.addAction(self.reset_zoom_action)
m.addAction(self.zoom_in_action)
m.addAction(self.zoom_out_action)
m.addAction(self.copy_action)
m.addAction(self.rotate_action)
m.exec(self.mapToGlobal(pos))
def set_to_viewport_size(self):
page_size = self.scrollarea.size()
@ -226,12 +245,17 @@ class ImageView(QDialog):
actual_height = self.current_img.size().height()
if actual_height:
return scaled_height / actual_height
return 1
return 1.0
def zoom_requested(self, zoom_out):
if (zoom_out and self.zo_button.isEnabled()) or (not zoom_out and self.zi_button.isEnabled()):
(self.zoom_out if zoom_out else self.zoom_in)()
def reset_zoom(self):
self.factor = 1.0
self.prefs.set('image_popup_zoom_factor', self.factor)
self.adjust_image(1.0)
def zoom_in(self):
if self.fit_image.isChecked():
factor = self.factor_from_fit()
@ -288,6 +312,9 @@ class ImageView(QDialog):
self.label.resize(self.factor * self.current_img.size())
self.zi_button.setEnabled(self.factor <= 3)
self.zo_button.setEnabled(self.factor >= 0.3333)
self.zoom_in_action.setEnabled(self.zi_button.isEnabled())
self.zoom_out_action.setEnabled(self.zo_button.isEnabled())
self.reset_zoom_action.setEnabled(self.factor != 1)
self.adjust_scrollbars(factor)
def adjust_scrollbars(self, factor):