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Show vertical marker at target position when following a link (#3202)

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poire-z
2017-09-11 17:11:04 +02:00
committed by Frans de Jonge
parent 1a1c1e3f80
commit a9c1ed24b8
1 changed files with 19 additions and 0 deletions
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19
frontend/apps/reader/modules/readerrolling.lua
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@@ -1,4 +1,6 @@
local Blitbuffer = require("ffi/blitbuffer")
local Device = require("device")
local Geom = require("ui/geometry")
local InputContainer = require("ui/widget/container/inputcontainer")
local Event = require("ui/event")
local ReaderPanning = require("apps/reader/modules/readerpanning")
@@ -393,6 +395,23 @@ end
function ReaderRolling:onGotoXPointer(xp)
self:_gotoXPointer(xp)
self.xpointer = xp
-- Show a mark on left side of screen to give a visual feedback
-- of where xpointer target is (removed after 1 second)
if string.sub(xp, 1, 1) == "#" then -- only for links, not page top fragment identifier
local doc_y = self.ui.document:getPosFromXPointer(xp)
local top_y = self.ui.document:getCurrentPos()
local doc_margins = self.ui.document._document:getPageMargins()
local screen_y = doc_y - top_y + doc_margins["top"]
local marker_w = math.max(doc_margins["left"] - Screen:scaleBySize(5), Screen:scaleBySize(5))
local marker_h = Screen:scaleBySize(self.ui.font.font_size * 1.1 * self.ui.font.line_space_percent/100.0)
UIManager:scheduleIn(0.5, function()
Screen.bb:paintRect(0, screen_y, marker_w, marker_h, Blitbuffer.COLOR_BLACK)
Screen["refreshPartial"](Screen, 0, screen_y, marker_w, marker_h)
UIManager:scheduleIn(1, function()
UIManager:setDirty(self.view.dialog, "partial", Geom:new({x=0, y=screen_y, w=marker_w, h=marker_h}))
end)
end)
end
return true
end