feat sketch 提取接口

fix

app/service/image2sketch/util/html.py

@@ -0,0 +1,86 @@
+import dominate
+from dominate.tags import meta, h3, table, tr, td, p, a, img, br
+import os
+
+
+class HTML:
+    """This HTML class allows us to save images and write texts into a single HTML file.
+
+     It consists of functions such as <add_header> (add a text header to the HTML file),
+     <add_images> (add a row of images to the HTML file), and <save> (save the HTML to the disk).
+     It is based on Python library 'dominate', a Python library for creating and manipulating HTML documents using a DOM API.
+    """
+
+    def __init__(self, web_dir, title, refresh=0):
+        """Initialize the HTML classes
+
+        Parameters:
+            web_dir (str) -- a directory that stores the webpage. HTML file will be created at <web_dir>/index.html; images will be saved at <web_dir/images/
+            title (str)   -- the webpage name
+            refresh (int) -- how often the website refresh itself; if 0; no refreshing
+        """
+        self.title = title
+        self.web_dir = web_dir
+        self.img_dir = os.path.join(self.web_dir, 'images')
+        if not os.path.exists(self.web_dir):
+            os.makedirs(self.web_dir)
+        if not os.path.exists(self.img_dir):
+            os.makedirs(self.img_dir)
+
+        self.doc = dominate.document(title=title)
+        if refresh > 0:
+            with self.doc.head:
+                meta(http_equiv="refresh", content=str(refresh))
+
+    def get_image_dir(self):
+        """Return the directory that stores images"""
+        return self.img_dir
+
+    def add_header(self, text):
+        """Insert a header to the HTML file
+
+        Parameters:
+            text (str) -- the header text
+        """
+        with self.doc:
+            h3(text)
+
+    def add_images(self, ims, txts, links, width=400):
+        """add images to the HTML file
+
+        Parameters:
+            ims (str list)   -- a list of image paths
+            txts (str list)  -- a list of image names shown on the website
+            links (str list) --  a list of hyperref links; when you click an image, it will redirect you to a new page
+        """
+        self.t = table(border=1, style="table-layout: fixed;")  # Insert a table
+        self.doc.add(self.t)
+        with self.t:
+            with tr():
+                for im, txt, link in zip(ims, txts, links):
+                    with td(style="word-wrap: break-word;", halign="center", valign="top"):
+                        with p():
+                            with a(href=os.path.join('images', link)):
+                                img(style="width:%dpx" % width, src=os.path.join('images', im))
+                            br()
+                            p(txt)
+
+    def save(self):
+        """save the current content to the HMTL file"""
+        html_file = '%s/index.html' % self.web_dir
+        f = open(html_file, 'wt')
+        f.write(self.doc.render())
+        f.close()
+
+
+if __name__ == '__main__':  # we show an example usage here.
+    html = HTML('web/', 'test_html')
+    html.add_header('hello world')
+
+    ims, txts, links = [], [], []
+    for n in range(4):
+        ims.append('image_%d.png' % n)
+        txts.append('text_%d' % n)
+        links.append('image_%d.png' % n)
+    html.add_images(ims, txts, links)
+    html.save()