Doh! should have read the documentation better.
you have to test for a 'null image' using eg. img.isnull()
on with my trivial experiments...
On Monday, March 11, 2024 at 8:10:03 PM UTC jkn wrote:
> Has anyone played much with class QClipboard? I did a couple of trivial
> experiments but I must be misunderstanding something.
>
> for instance, QClipboard.image() returns a non-null value even if the
> clipboard does not contain an image.
>
> J^n
>
>
> On Monday, March 11, 2024 at 4:33:23 PM UTC tbp1...@gmail.com wrote:
>
>> It turns out that to get the relative path conversion w have to remove
>> any quotation marks around the path before running os.relpath(). So the
>> script becomes:
>>
>> """Insert RsT code at cursor to display an image.
>>
>> The path to the image file will come from a file dialog.
>> This action is undoable.
>> """
>> PATH = g.app.gui.runOpenFileDialog(c,
>> title="Import File",
>> filetypes=[("All files", "*"),],
>> defaultextension=".*",
>> multiple=False)
>>
>> if PATH:
>> from os.path import relpath
>> PATH = PATH.replace('"', '').replace("'", '')
>> PATH = relpath(PATH)
>> PATH = PATH.replace('\\', '/')
>>
>> IMAGE_TEMPLATE = f'''
>>
>> .. figure:: {PATH}
>> :scale: 50%
>>
>> '''
>>
>> w = c.frame.body.wrapper
>> p = c.p
>> s = p.b
>> u = c.undoer
>>
>> start, _ = w.getSelectionRange()
>>
>> undoType = 'insert-rst-image-code'
>> undoData = u.beforeChangeNodeContents(p)
>>
>> head, tail = s[:start], s[start:]
>> p.b = head + IMAGE_TEMPLATE + tail
>>
>> c.setChanged()
>> p.setDirty()
>> u.afterChangeNodeContents(p, undoType, undoData)
>> c.redraw()
>>
>> On Saturday, March 9, 2024 at 2:04:19 PM UTC-5 Thomas Passin wrote:
>>
>>> We can't directly insert an image into a standard Leo node because they
>>> are text-only. I find this very annoying sometimes, especially when I am
>>> writing a note and want to include an image.
>>>
>>> But we can do the next best thing - insert an ReStructuredText (RsT)
>>> instruction to display an image so that we can view it with the
>>> viewrendered3 plugin (VR3). The instruction is short and easy, but it's
>>> still annoying to type and I usually forget the exact details. I have a
>>> button that toggles VR3 on and off so that it's easy to view an embedded
>>> image once the RsT instruction is there. An embedding command would make
>>> embedding with Leo as easy as embedding an image in a word processor.
>>> Aha, this is Leo, let's write a script!
>>>
>>> Here is a script that pops up a file dialog and inserts a relative path
>>> to the chosen file. There are several small variations which I discuss
>>> after the code.
>>>
>>> """Insert RsT code at cursor to display an image.
>>>
>>> The path to the image file will come from a file dialog.
>>> This action is undoable.
>>> """
>>> PATH = g.app.gui.runOpenFileDialog(c,
>>> title="Import File",
>>> filetypes=[("All files", "*"),],
>>> defaultextension=".*",
>>> multiple=False)
>>>
>>> if PATH:
>>> from os.path import relpath
>>> PATH = relpath(PATH)
>>> PATH = PATH.replace('\\', '/').replace('"', '').replace("'", '')
>>> IMAGE_TEMPLATE = f'''
>>>
>>> .. figure:: {PATH}
>>> :scale: 50%
>>>
>>> '''
>>> w = c.frame.body.wrapper
>>> p = c.p
>>> s = p.b
>>> u = c.undoer
>>>
>>> start, _ = w.getSelectionRange()
>>>
>>> undoType = 'insert-rst-image-code'
>>> undoData = u.beforeChangeNodeContents(p)
>>>
>>> head, tail = s[:start], s[start:]
>>> p.b = head + IMAGE_TEMPLATE + tail
>>>
>>> c.setChanged()
>>> p.setDirty()
>>> u.afterChangeNodeContents(p, undoType, undoData)
>>> c.redraw()
>>>
>>> Variations:
>>> 1. If you want an absolute path instead of a relative path, delete the
>>> lines
>>> from os.path import relpath
>>> PATH = relpath(PATH)
>>> with
>>>
>>> 2. If you want to get the path from the clipboard instead of a file
>>> dialog, replace the lines
>>>
>>> PATH = g.app.gui.runOpenFileDialog(c,
>>> title="Import File",
>>> filetypes=[("All files", "*"),],
>>> defaultextension=".*",
>>> multiple=False)
>>>
>>> with the line
>>>
>>> PATH = g.app.gui.getTextFromClipboard()
>>>
>>> 3. If you want the embedded image to be full width instead of 50%,
>>> delete the line
>>>
>>> :scale: 50%
>>>
>>> 4. You can make this work with Markdown or Asciidoc by using their
>>> embedding instruction in the TEMPLATE instead of the RsT one.
>>>
>>> I have added the command to my own local menu. VR3 can open in a tab in
>>> the log pane; the command for toggling in a tab is *vr3-toggle-tab. * I
>>> usually like opening it in the log pane instead of in its own separate pane.
>>>
>>> If you would like to create a local menu of your own and don't know how,
>>> it's easy. Just ask and I'll show what to add to myLeoSettings,leo.
>>>
>>
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