<div dir="ltr">I don't know if ther's a plugin for that... but you can do it. Link an event to mapCanvas class extent change checking condition and setting extent if condition is outside</div><div class="gmail_extra">
<br><br><div class="gmail_quote">On 12 December 2013 03:04, Shriramana Sharma <span dir="ltr"><<a href="mailto:samjnaa@gmail.com" target="_blank">samjnaa@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello. I have recently entered the GIS/QGIS world. Basically I have an<br>
interest in astronomy and want to produce an eclipse visibility map<br>
for India. (Apologies that my interests in GIS are for now not any<br>
deeper than that...)<br>
<br>
I only want to produce the map for India and decided upon a "square"<br>
region bounded by 5 N ~ 40 N and 65 E ~ 100 E. However I'm not sure<br>
how to limit the extent of the map in QGIS. The slightest drag or the<br>
slightest click with the hand tool seems to change the extent. Now<br>
clicking to zoom/unzoom is fine but I really don't want QGIS to spend<br>
time updating the rest of the globe rendering and more than that in my<br>
final output I only want a PDF or PNG showing the above region.<br>
<br>
I did search the QGIS PDF manual for the keyword "extent" but whatever<br>
I found did not seem to answer what I was looking for. I am afraid to<br>
go to gis.stackexchange for fear that a noob question might be<br>
downvoted. So I turn to the mailing list. Thanks for your patience and<br>
help!<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Shriramana Sharma ஶ்ரீரமணஶர்மா श्रीरमणशर्मा<br>
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