mirror of
https://github.com/koreader/koreader.git
synced 2025-08-10 00:52:38 +00:00
0a8ca94218
This change introduce object's dest_x and dest_y coordinates which are needed in zoomedRectCoordTransform to make highlight scale and move according to current pan position.
93 lines
2.7 KiB
Lua
93 lines
2.7 KiB
Lua
require "unireader"
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DJVUReader = UniReader:new{}
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-- open a DJVU file and its settings store
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-- DJVU does not support password yet
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function DJVUReader:open(filename)
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local ok
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ok, self.doc = pcall(djvu.openDocument, filename, self.cache_document_size)
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if not ok then
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return ok, self.doc -- this will be the error message instead
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end
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return ok
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end
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function DJVUReader:init()
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self:addAllCommands()
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self:adjustDjvuReaderCommand()
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end
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function DJVUReader:adjustDjvuReaderCommand()
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self.commands:del(KEY_J, MOD_SHIFT, "J")
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self.commands:del(KEY_K, MOD_SHIFT, "K")
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end
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----------------------------------------------------
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-- highlight support
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----------------------------------------------------
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function DJVUReader:getText(pageno)
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return self.doc:getPageText(pageno)
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end
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----------------------------------------------------
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-- In djvulibre library, some coordinates starts from
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-- lower left conner, i.e. y is upside down in kpv's
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-- coordinate. So y0 should be taken with special care.
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----------------------------------------------------
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function DJVUReader:zoomedRectCoordTransform(x0, y0, x1, y1)
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local x = self.dest_x
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local y = self.dest_y
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if self.offset_x < 0 or self.offset_y < 0 then
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x = x + self.offset_x
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y = y + self.offset_y
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end
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print("# zoomedRectCoordTransform x="..x.." y="..y.." dest="..self.dest_x..","..self.dest_y.." offset="..self.offset_x..","..self.offset_y);
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return
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x0 * self.globalzoom + x,
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self.cur_full_height - (y1 * self.globalzoom) + y,
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(x1 - x0) * self.globalzoom,
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(y1 - y0) * self.globalzoom
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end
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-- y axel in djvulibre starts from bottom
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function DJVUReader:_isEntireWordInScreenHeightRange(w)
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return (w ~= nil) and
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(self.cur_full_height - (w.y1 * self.globalzoom) >=
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-self.offset_y) and
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(self.cur_full_height - (w.y0 * self.globalzoom) <=
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-self.offset_y + G_height)
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end
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-- y axel in djvulibre starts from bottom
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function DJVUReader:_isEntireLineInScreenHeightRange(l)
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return (l ~= nil) and
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(self.cur_full_height - (l.y1 * self.globalzoom) >=
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-self.offset_y) and
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(self.cur_full_height - (l.y0 * self.globalzoom) <=
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-self.offset_y + G_height)
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end
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-- y axel in djvulibre starts from bottom
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function DJVUReader:_isWordInScreenRange(w)
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if not w then
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return false
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end
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is_entire_word_out_of_screen_height =
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(self.cur_full_height - (w.y0 * self.globalzoom) <=
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-self.offset_y)
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or (self.cur_full_height - (w.y1 * self.globalzoom) >=
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-self.offset_y + G_height)
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is_entire_word_out_of_screen_width =
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(w.x0 * self.globalzoom >= -self.offset_x + G_width
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or w.x1 * self.globalzoom <= -self.offset_x)
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return (not is_entire_word_out_of_screen_height) and
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(not is_entire_word_out_of_screen_width)
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end
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