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feat: Added Decorator class and HasDecorator mixin (#1781)

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The new class allows applying visual filters to canvas drawing operations. It is conceptually similar to the LayerProcessor class, except that it applies directly to a canvas instead of a Picture.

This functionality was extracted from PR #1755.

NB: the guitar image was taken from here, which is a public domain image, i.e. licensed under CC0 1.0.
This commit is contained in:
Pasha Stetsenko
2022-07-18 12:44:17 -07:00
committed by GitHub
parent 60daa196a8
commit 8d00847cfc
23 changed files with 561 additions and 7 deletions
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29
doc/_sphinx/extensions/flutter_app.py
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@ -52,6 +52,11 @@ class FlutterAppDirective(SphinxDirective):
compiled.
"infobox" - the content will be displayed as an infobox floating on
the right-hand side of the page.
:width: - override the default width of an iframe in widget/infobox modes.
:height: - override the default height of an iframe in widget/infobox
modes.
"""
has_content = True
required_arguments = 0
@ -60,6 +65,8 @@ class FlutterAppDirective(SphinxDirective):
'sources': directives.unchanged,
'page': directives.unchanged,
'show': directives.unchanged,
'width': directives.unchanged,
'height': directives.unchanged,
}
# Static list of targets that were already compiled during the build
COMPILED = []
@ -89,7 +96,21 @@ class FlutterAppDirective(SphinxDirective):
iframe_url = _doc_root() + self.html_dir + '/index.html?' + page
result = []
if 'widget' in self.modes:
result.append(IFrame(src=iframe_url, classes=['flutter-app-iframe']))
iframe = IFrame(src=iframe_url, classes=['flutter-app-iframe'])
result.append(iframe)
styles = []
if self.options.get('width'):
width = self.options.get('width')
if width.isdigit():
width += 'px'
styles.append("width: " + width)
if self.options.get('height'):
height = self.options.get('height')
if height.isdigit():
height += 'px'
styles.append("height: " + height)
if styles:
iframe.attributes['style'] = '; '.join(styles)
if 'popup' in self.modes:
result.append(Button(
'',
@ -237,8 +258,10 @@ def _doc_root():
class IFrame(nodes.Element, nodes.General):
def visit(self, node):
self.body.append(
self.starttag(node, 'iframe', src=node.attributes['src']))
attrs = {'src': node.attributes['src']}
if 'style' in node.attributes:
attrs['style'] = node.attributes['style']
self.body.append(self.starttag(node, 'iframe', **attrs).strip())
def depart(self, _):
self.body.append('</iframe>')