Store last globalzoom_mode in self.pan_by_page so we can restore it
to force offsets recalculation on page change
This wasn't quite enough to trigger correct re-panning for page
changes when using fiveway to move in two-column mode, issue #275
I considered adding callback to goto method and than transfering
it through function calls, but this approach (allthough very
questionable) seemed to provide simplier code.
For PDF and DjVu files (but not for crereader) the command handler for
"Back" key can call addJump() in order to avoid losing the top of the
jump history on return. This (addJump()) can cause the TOC to be
retrieved and the message "Retrieving TOC..." to be displayed.
If this happens then we need to redraw the current page after displaying
our own "Already first jump!" message.
In UniReader:showToc() function we cannot use goto() by page number
but have to use self:gotoTocEntry() because crereader defines its own
CREReader:gotoTocEntry() method which uses "xpointer" field of the TOC
entry for this purpose.
With this fix the TOC navigation in crengine-related files works
correctly, BUT after each jump you have to press Menu to refresh the
page for some reason (adding explicit self:redrawCurrentPage() in the
code before gotoTocEntry() doesn't help). This seems to be an unrelated
problem to do with cr3 caching or something else. I will try to
investigate it as well, but for now I am committing the fix for the TOC side
of the problem.
2. Support deleting highlights from within "show all highlights" function (Shift-N). It is much easier to delete multiple highlights than having to position the cursor on them and press Del.
3. Fix the bug whereby the first press of Menu would overlay the info on top of the book's text.
4. Show the number of bookmarks and highlights in their respective lists.
5. Fix the incorrect section title shown in Menu when the file contains TOC with external links.
6. Rename "start highlight mode" -> "enter highlight mode".
7. Rename "display all highlights" -> "show all highlights".
to the current page display a message "External links unsupported" and
remain in the TOC menu. The reason for this decision is that if the
user chose invalid TOC entry she is more likely to wish to stay in the
TOC menu and choose another entry rather than return to reading immediately.
idea is simple: when starting long operation (page renedering) invert
box on top of screen which has relative width of this page.
This allows easy overview where in document user is, along with
indication that something is still happending.
Perfect use-case are glossy magazines pdfs which have first two
pages in hi-res graphics, so this indicator is very useful to see
that something is still happending and that reader didn't die
