File: image_widget.py

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# (C) Copyright 2005-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!

""" ImageWidget example.

This is only supported by the WxPython toolkit.
"""

import wx
import wx.html
import wx.lib.wxpTag


from pyface.api import ApplicationWindow, GUI, ImageResource, ImageWidget
from pyface.action.api import Action, MenuManager, MenuBarManager


# HTML templates.
HTML = """

<html>
  <body>
    %s
  </body>
</html>

"""

PART = """<wxp module="wx" class="Panel"><param name="id" value="%s"><param name="size" value="(50, 50)"></wxp>"""


class MainWindow(ApplicationWindow):
    """ The main application window. """

    # ------------------------------------------------------------------------
    # 'object' interface.
    # ------------------------------------------------------------------------

    def __init__(self, **traits):
        """ Creates a new application window. """

        # Base class constructor.
        super().__init__(**traits)

        # Add a menu bar.
        self.menu_bar_manager = MenuBarManager(
            MenuManager(
                Action(name="E&xit", on_perform=self.close), name="&File"
            )
        )

        return

    # ------------------------------------------------------------------------
    # Protected 'Window' interface.
    # ------------------------------------------------------------------------

    def _create_contents(self, parent):
        """ Creates the window contents.

        This method is intended to be overridden if necessary.  By default we
        just create an empty (and blue!) panel.

        """

        panel = wx.Panel(parent, -1, style=wx.CLIP_CHILDREN)
        sizer = wx.BoxSizer(wx.VERTICAL)
        panel.SetSizer(sizer)
        panel.SetAutoLayout(True)

        N = 100
        wxid = wx.NewId()

        # Create the HTML.
        parts = []
        for i in range(N):
            parts.append(PART % str(wxid + i))

        html = HTML % "".join(parts)

        # Create the HTML window.
        html_window = wx.html.HtmlWindow(panel, -1, style=wx.CLIP_CHILDREN)
        html_window.SetPage(html)

        # Initialize all embedded wx controls.
        for i in range(N):
            self._initialize_window(html_window, wxid + i)

        sizer.Add(html_window, 1, wx.EXPAND)

        # Resize the panel to fit the sizer's minimum size.
        sizer.Fit(panel)

        return panel

    # ------------------------------------------------------------------------
    # Private interface.
    # ------------------------------------------------------------------------

    def _initialize_window(self, parent, wxid):
        """ Initialize the window with the specified Id. """

        window = parent.FindWindowById(wxid)
        sizer = wx.BoxSizer(wx.VERTICAL)
        window.SetSizer(sizer)
        window.SetAutoLayout(True)

        window.SetBackgroundColour("white")
        window.SetWindowStyleFlag(wx.CLIP_CHILDREN)
        window.Refresh()
        image = ImageResource("closed_folder_24x24")
        bitmap = image.create_image().ConvertToBitmap()

        image_widget = ImageWidget(window, bitmap=bitmap)
        image_widget.control.SetBackgroundColour("white")
        sizer.Add(image_widget.control, 0, wx.EXPAND)

        text = wx.StaticText(window, -1, "Blah", style=wx.ALIGN_CENTRE)
        sizer.Add(text, 0, wx.EXPAND)

        # Resize the window to match the sizer's minimum size.
        sizer.Fit(window)

        return


# Application entry point.
if __name__ == "__main__":
    # Create the GUI (this does NOT start the GUI event loop).
    gui = GUI()

    # Create and open the main window.
    window = MainWindow()
    window.open()

    # Start the GUI event loop!
    gui.start_event_loop()