The ruler tool (#103, "measure line string") shows the length in pixels by default. If image area information is available, it switches to the length in meters. However, activation of the tool does not initialte fetching of image area information. Only activation of the scale line indicator does. This also affects the measure tooltip. Fix this:
Fetch image area information if the ruler tool is active
Fetch image area information if the measure tooltip is active
The ruler tool (#103, "measure line string") shows the length in pixels by default. If image area information is available, it switches to the length in meters. However, activation of the tool does not initialte fetching of image area information. Only activation of the scale line indicator does. This also affects the measure tooltip. Fix this: