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Edit book: Add an filter to make images look like oil paintings

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This commit is contained in:
Kovid Goyal 2016-05-06 20:49:50 +05:30
parent b5bc34e0fe
commit 54ac2d394a
2 changed files with 27 additions and 1 deletions
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21
src/calibre/gui2/tweak_book/editor/canvas.py
View File

@ -21,7 +21,10 @@ from calibre.gui2.dnd import (
IMAGE_EXTENSIONS, dnd_has_extension, dnd_has_image, dnd_get_image, DownloadDialog)
from calibre.gui2.tweak_book import capitalize
from calibre.utils.imghdr import identify
from calibre.utils.img import remove_borders, gaussian_sharpen, gaussian_blur, image_to_data, despeckle, normalize
from calibre.utils.img import (
remove_borders, gaussian_sharpen, gaussian_blur, image_to_data, despeckle,
normalize, oil_paint
)
def painter(func):
@wraps(func)
@ -142,6 +145,17 @@ class Blur(Sharpen):
def __call__(self, canvas):
return gaussian_blur(canvas.current_image, sigma=self.sigma)
class Oilify(Command):
TEXT = _('Make image look like an oil painting')
def __init__(self, radius, canvas):
self.radius = radius
Command.__init__(self, canvas)
def __call__(self, canvas):
return oil_paint(canvas.current_image, radius=self.radius)
class Despeckle(Command):
TEXT = _('De-speckle image')
@ -380,6 +394,11 @@ class Canvas(QWidget):
self.undo_stack.push(Normalize(self))
return True
@imageop
def oilify_image(self, radius=4.0):
self.undo_stack.push(Oilify(radius, self))
return True
# The selection rectangle {{{
@property
def dc_size(self):

7
src/calibre/gui2/tweak_book/editor/image.py
View File

@ -274,6 +274,7 @@ class Editor(QMainWindow):
m.addAction(_('Blur image'), self.blur_image)
m.addAction(_('De-speckle image'), self.canvas.despeckle_image)
m.addAction(_('Improve contrast (normalize image)'), self.canvas.normalize_image)
m.addAction(_('Make image look like an oil painting'), self.oilify_image)
self.info_bar = b = self.addToolBar(_('Image information bar'))
b.setObjectName('image_info_bar')
@ -322,6 +323,12 @@ class Editor(QMainWindow):
if ok:
self.canvas.blur_image(sigma=val)
def oilify_image(self):
val, ok = QInputDialog.getDouble(self, _('Oilify image'), _(
'The strength of the operation (higher numbers have larger effects)'), value=4, min=0.1, max=20)
if ok:
self.canvas.oilify_image(radius=val)
def launch_editor(path_to_edit, path_is_raw=False):
app = QApplication([])
if path_is_raw: