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PDF free zoom mode revisit

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this should implement feature request of zoom mode for multi-columns
page in #501
This PR depends on koreader/koreader-base#435

How to use?
1. Tap the top left corner of a PDF/Djvu page to get into the flipping
mode
2. Double-tap on text block will zoom in to that column
3. Double-tap on any area will zoom out to an overview of the page
4. repeat step 2 to focus to another page block

How does it work?
1. We first find the mask of text blocks in the page. (Pic 1)
2. Then we intersect page boxes with user tap to form a page block. (Pic 2)
3. Finally we zoom the page to the page block and center current view to
that block. (Pic 3)
This commit is contained in:
chrox
2016-06-15 01:50:59 +08:00
parent 22d0dbfb4f
commit 5983050d79
9 changed files with 47 additions and 45 deletions
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3
defaults.lua
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@@ -136,9 +136,6 @@ DMINIBAR_HEIGHT = 7 -- Should be smaller than DMINIBAR_CONTAINER_HEI
DMINIBAR_CONTAINER_HEIGHT = 14 -- Larger means more padding at the bottom, at the risk of eating into the last line
DMINIBAR_FONT_SIZE = 14
-- gesture detector defaults
DGESDETECT_DISABLE_DOUBLE_TAP = true
-- change this to any numerical value if you want to antomatically save settings when turning pages
DAUTO_SAVE_PAGING_COUNT = nil