Improve layout interaction, cursor-anchored zoom, and embedded GUI tools

[rudra290]

Pull Request Request

Title

Improve layout interaction, cursor-anchored zoom, and embedded GUI tools

Summary

This contribution improves the Tcl/Tk GUI interaction experience in Magic while preserving the existing command-based workflow.

Changes included

Cursor-anchored zoom

• Zooming now keeps the point under the cursor fixed on screen.
• Updated:
  • windows/windView.c
  • windows/windClient.c
  • windows/windCmdSZ.c
  • windows/windows.h
• Updated the zoom documentation in:
  • doc/html/zoom.html

Left-side tool toolbar

Added clickable GUI tool buttons for:

• Cursor
• Wire
• Net
• Pick
• Ruler

The active tool is visually highlighted.

The toolbar also:

• Cancels unfinished Wire or Pick operations before switching tools.
• Restores focus to the Magic layout window after a toolbar click.
• Keeps keyboard shortcuts such as g for grid, z/Z for zoom, and other Magic shortcuts working.

Improved box interaction

• Added left-button drag box creation in the Cursor tool.
• Dragging works in all four directions:
  • Top-left
  • Top-right
  • Bottom-left
  • Bottom-right
• Box coordinates are normalized automatically.
• Existing right-button box resizing behavior remains available.

Improved layout information display

The top-right status area now reports more useful information, including:

• Cursor coordinates
• Box lower-left coordinate
• Box upper-right coordinate
• Box width and height
• Cursor offset from the box origin
• Box center
• Box area

Embedded console

• Exposed the existing in-application Tcl console through the Options menu.
• Renamed the menu option to Embedded Console.
• The console can be opened and hidden per layout window.
• It supports command history and displays Magic output and errors.

Documentation

Updated:

doc/html/zoom.html
doc/html/box.html
doc/html/maketoolbar.html

Commits

f7a08fbe Keep zoom position fixed under cursor
47e1d8c1 Improve layout editing tools
c4ae5a14 Restore keyboard focus after tool selection

Validation

• git diff --check passed.
• The working tree is clean.
• The project was built successfully in the user’s environment.
• The local build attempt was blocked by the environment’s read-only ccache configuration, not by a source compilation error.

Request for review

These changes were implemented by ChatGPT Luna in response to the requested UI improvements. Please review the implementation carefully, especially the Tcl/Tk event bindings and interactions with Magic’s existing mouse-button and keyboard macro system, and consider whether the changes fit the project’s established behavior and contribution standards.

Thank you.