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Class: Sketchup::ToolsObserver Abstract

Relationships
Inherits: Object

Overview

This class is abstract.

To implement this observer, create a Ruby class of this type, override the desired methods, and add an instance of the observer to the Tools object.

This observer interface is implemented to react to tool events.

Some of the code below mentions tool_names and tool_ids. Here is a list of the common tool IDs and names:

  • 21013 = 3DTextTool

  • 21065 = ArcTool

  • 10523 = CameraDollyTool

  • 10508 = CameraOrbitTool

  • 10525 = CameraPanTool

  • 21169 = PositionCameraTool

  • 10520 = CameraWalkTool

  • 10509 = CameraZoomTool

  • 10526 = CameraZoomWindowTool

  • 21096 = CircleTool

  • 21013 = ComponentTool

  • 21126 = ComponentCSTool

  • 21410 = DimensionTool

  • 21019 = EraseTool

  • 21031 = FreehandTool

  • 21525 = ExtrudeTool

  • 21126 = SketchCSTool

  • 21048 = MoveTool

  • 21024 = MeasureTool

  • 21100 = OffsetTool

  • 21074 = PaintTool

  • 21013 = PasteTool

  • 21095 = PolyTool

  • 21515 = PositionTextureTool

  • 21041 = PushPullTool

  • 21057 = ProtractorTool

  • 21094 = RectangleTool

  • 21129 = RotateTool

  • 21236 = ScaleTool

  • 21022 = SelectionTool

  • 21337 = SectionPlaneTool

  • 21020 = SketchTool

  • 21405 = TextTool

Examples:

# This is an example of an observer that watches tool interactions.
class MyToolsObserver < Sketchup::ToolsObserver
  def onActiveToolChanged(tools, tool_name, tool_id)
    puts "onActiveToolChanged: #{tool_name}"
  end
end

# Attach the observer.
Sketchup.active_model.tools.add_observer(MyToolsObserver.new)

Version:

  • SketchUp 6.0

Instance Method Summary

Instance Method Details

#onActiveToolChanged(tools, tool_name, tool_id) ⇒ nil

Note:

In SketchUp 6 and SketchUp 7.0, tool names on the Mac have some of their first characters truncated. For instance, on Windows, a tool is “CameraOrbit”. On the Mac, is comes across as “raOrbit”. Therefore, use the tool_id to keep track of which tool you need to watch for, or use logic that corrects for the error. There is an example method of one way to do this shown below. (This example is not a comprehensive list of the tool names.)

Once you subclass ToolsObserver with your unique class, you can override the #onActiveToolChanged method to receive tool change notifications.

Examples:

def onActiveToolChanged(tools, tool_name, tool_id)
  tool_name = fix_mac_tool_name(tool_name)
  puts "onActiveToolChanged: #{tool_name}"
end

# Returns the "correct" tool name to account for mac API differences.
#
#   Args:
#     tool_name     The tool name to fix
#
#   Returns
#     string   corrected tool name
def fix_mac_tool_name(tool_name)
  if tool_name == "eTool"
    tool_name = "ScaleTool"
  elsif tool_name == "ool"
    tool_name = "MoveTool"
  elsif tool_name == "onentCSTool"
    tool_name = "ComponentCSTool"
  elsif tool_name == "PullTool"
    tool_name = "PushPullTool"
  end
  return tool_name
end

Parameters:

  • tools (Sketchup::Tools) —

    A Tools object.

  • tool_name (String) —

    The name of the tool.

  • tool_id (Integer) —

    The ID of the tool. This is a predefined number unique to a given tool. For example, the Materials Browser is tool_id 21074.

Version:

  • SketchUp 6.0

#onToolStateChanged(tools, tool_name, tool_id, tool_state) ⇒ nil

Note:

In SketchUp 6 and SketchUp 7, tool names on the Mac have their first few characters truncated. For instance, on Windows, a tool is “CameraOrbit”. On the Mac, is comes across as “raOrbit”. Therefore, use the tool_id to keep track of which tool you need to watch for, or use logic that corrects for the error. This bug was fixed in SketchUp 8.0.

The #onToolStateChanged method is called each time the user performs an action with a tool. The actual state that is returned is an internal number that varies tool to tool. If you want to watch existing tools for every interaction, you will need to experiment with the tool state to determine which states you care about. There is little consistency tool to tool.

Examples:

def onToolStateChanged(tools, tool_name, tool_id, tool_state)
  puts "onToolStateChanged: #{tool_name}:#{tool_state}"
end

Parameters:

  • tools (Sketchup::Tools) —

    A Tools object.

  • tool_name (String) —

    The name of the tool.

  • tool_id (Integer) —

    The ID of the tool. This is a predefined number unique to a given tool. For example, the Materials Browser is tool_id 21074.

  • tool_state (Integer) —

    A number identifying the state the tool just entered.

Version:

  • SketchUp 6.0