Existing objects in diagrams Leave feedback
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Watermarker.get_content() returns a DiagramContent whose pages expose the diagram’s shapes and headers/footers. You can iterate the shapes to read their properties, modify them, or remove them.
The example reports the shapes on the first page of a Visio diagram.
from groupdocs.watermark import Watermarker
def extract_shapes():
with Watermarker("./diagram.vsdx") as watermarker:
content = watermarker.get_content()
page = content.pages[0]
print(f"Pages: {len(content.pages)}; page 1 shapes: {len(page.shapes)}")
for shape in page.shapes:
text = (shape.text or "").strip()
print(f" shape name={shape.name!r} text={text!r} "
f"size={round(shape.width)}x{round(shape.height)}")
if __name__ == "__main__":
extract_shapes()
diagram.vsdx is the sample file used in this example. Click here to download it.
Pages: 2; page 1 shapes: 12
shape name='Rectangle' text='' size=108x72
shape name='Circle' text='' size=108x108
shape name='Square' text='' size=108x108
shape name='Octagon' text='' size=108x108
shape name='Sheet.20' text='' size=216x63
shape name='Sheet.21' text='' size=216x54
shape name='Triangle' text='' size=108x94
shape name='Sheet.33' text='' size=85x0
shape name='Sheet.34' text='' size=108x0
[TRUNCATED]
Each shape exposes name, text, image, x, y, width, height, and rotate_angle.
The shapes collection supports remove_at(index) and remove(shape). Iterate in reverse when removing by index:
from groupdocs.watermark import Watermarker
def remove_and_modify_shapes():
with Watermarker("./diagram.vsdx") as watermarker:
content = watermarker.get_content()
for page in content.pages:
for i in range(len(page.shapes) - 1, -1, -1):
if page.shapes[i].name == "Rectangle":
page.shapes.remove_at(i)
watermarker.save("./output.vsdx")
if __name__ == "__main__":
remove_and_modify_shapes()
diagram.vsdx is the sample file used in this example. Click here to download it.
Binary file (VSDX, 29 KB)
You can replace a shape’s text by assigning to shape.text, replace its image by assigning a DiagramWatermarkableImage to shape.image, and modify its position and size through x, y, width, height, and rotate_angle.
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