First version

jsignature/widgets.py

@@ -0,0 +1,41 @@
+"""
+    Provides a django form widget to handle a signature capture field with
+    with jSignature jQuery plugin
+"""
+import json
+from django.forms.widgets import HiddenInput
+from django.utils.safestring import mark_safe
+from django.utils.translation import ugettext_lazy as _
+from jsignature.settings import JSIGNATURE_DEFAULT_CONFIG
+
+class JSignatureWidget(HiddenInput):
+    """
+    A widget handling a signature capture field with with jSignature
+    """
+
+    class Media:
+        js = ('js/jSignature.min.js',
+              'js/django_jsignature.js')
+
+    def __init__(self, attrs=None, jsignature_attrs=None):
+        super(JSignatureWidget, self).__init__(attrs)
+        # Store jSignature js config
+        self.jsignature_attrs = jsignature_attrs or {}
+
+    def render(self, name, value, attrs=None):
+
+        # Build config
+        jsign_id = 'jsign_%s' % name
+        jsignature_config = JSIGNATURE_DEFAULT_CONFIG.copy()
+        jsignature_config.update(self.jsignature_attrs)
+
+        # Build output
+        hidden_input = super(JSignatureWidget, self).render(name, value, attrs)
+        div = u'<div id="%s" class="jsign-container"></div>' % jsign_id
+        clr = u'<input type="button" value="%s" class="btn">' % _('Reset')
+        js  = u'$("#%s").jSignature(%s);' % (jsign_id, json.dumps(jsignature_config))
+        js += u'$("#%s").jSignature("setData", %s,"native");' % (jsign_id, json.dumps(value))
+        js  = u'<script type="text/javascript">%s</script>' % js
+        out = u'<div class="jsign-wrapper">%s%s%s%s</div>' % (hidden_input, div, clr, js)
+
+        return mark_safe(out)