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mirror of https://github.com/koreader/koreader synced 2024-10-31 21:20:20 +00:00
koreader/frontend/apps/reader/modules/readercropping.lua
NiLuJe 2067a16fa1
ReaderZooming: Unconditionally update the configurables on SetZoomMode (#7735)
Expand #7728 to also catch SetZoomMode (mostly for Dispatcher's sake, but other things also send it).
2021-05-23 19:01:09 +02:00

178 lines
6.1 KiB
Lua

local BBoxWidget = require("ui/widget/bboxwidget")
local Blitbuffer = require("ffi/blitbuffer")
local ButtonTable = require("ui/widget/buttontable")
local CenterContainer = require("ui/widget/container/centercontainer")
local Event = require("ui/event")
local FrameContainer = require("ui/widget/container/framecontainer")
local Geom = require("ui/geometry")
local InputContainer = require("ui/widget/container/inputcontainer")
local Math = require("optmath")
local UIManager = require("ui/uimanager")
local VerticalGroup = require("ui/widget/verticalgroup")
local Screen = require("device").screen
local _ = require("gettext")
local ReaderCropping = InputContainer:new{}
function ReaderCropping:onPageCrop(mode)
self.ui:handleEvent(Event:new("CloseConfigMenu"))
-- backup original zoom mode as cropping use "page" zoom mode
self.orig_zoom_mode = self.view.zoom_mode
if mode == "auto" then
--- @fixme: This is weird. "auto" crop happens to be the default, yet the default zoom mode/genus is "page", not "content".
--- This effectively yields different results whether auto is enabled by default, or toggled at runtime...
if self.document.configurable.text_wrap ~= 1 then
self:setCropZoomMode(true)
end
return
elseif mode == "none" then
return
end
-- backup original view dimen
self.orig_view_dimen = Geom:new{w = self.view.dimen.w, h = self.view.dimen.h}
-- backup original view bgcolor
self.orig_view_bgcolor = self.view.outer_page_color
self.view.outer_page_color = Blitbuffer.COLOR_DARK_GRAY
-- backup original footer visibility
self.orig_view_footer_visibility = self.view.footer_visible
self.view.footer_visible = false
-- backup original page scroll
self.orig_page_scroll = self.view.page_scroll
self.view.page_scroll = false
-- backup and disable original hinting state
self.ui:handleEvent(Event:new("DisableHinting"))
-- backup original reflow mode as cropping use non-reflow mode
self.orig_reflow_mode = self.document.configurable.text_wrap
if self.orig_reflow_mode == 1 then
self.document.configurable.text_wrap = 0
-- if we are in reflow mode, then we are already in page
-- mode, just force readerview to recalculate visible_area
self.view:recalculate()
else
self.ui:handleEvent(Event:new("SetZoomMode", "page"))
end
-- prepare bottom buttons so we know the size available for the page above it
local button_table = ButtonTable:new{
width = Screen:getWidth(),
button_font_face = "cfont",
button_font_size = 20,
buttons = {{
{
text = _("Cancel"),
callback = function() self:onCancelPageCrop() end,
},
{
text = _("Apply crop"),
callback = function() self:onConfirmPageCrop() end,
},
}},
zero_sep = true,
show_parent = self,
}
local button_container = FrameContainer:new{
margin = 0,
bordersize = 0,
padding = 0,
background = Blitbuffer.COLOR_WHITE,
CenterContainer:new{
dimen = Geom:new{
w = Screen:getWidth(),
h = button_table:getSize().h,
},
button_table,
}
}
-- height available for page
local page_container_h = Screen:getHeight() - button_table:getSize().h
local page_dimen = Geom:new{
w = Screen:getWidth(),
h = page_container_h,
}
-- resize document view to the available size
self.ui:handleEvent(Event:new("SetDimensions", page_dimen))
-- finalize crop dialog
self.bbox_widget = BBoxWidget:new{
ui = self.ui,
view = self.view,
document = self.document,
}
self.crop_dialog = VerticalGroup:new{
align = "left",
self.bbox_widget,
button_container,
}
UIManager:show(self.crop_dialog)
return true
end
function ReaderCropping:onConfirmPageCrop()
--DEBUG("new bbox", new_bbox)
UIManager:close(self.crop_dialog)
local new_bbox = self.bbox_widget:getModifiedPageBBox()
self.ui:handleEvent(Event:new("BBoxUpdate", new_bbox))
local pageno = self.view.state.page
self.document.bbox[pageno] = new_bbox
self.document.bbox[Math.oddEven(pageno)] = new_bbox
self:exitPageCrop(true)
return true
end
function ReaderCropping:onCancelPageCrop()
UIManager:close(self.crop_dialog)
self:exitPageCrop(false)
return true
end
function ReaderCropping:exitPageCrop(confirmed)
-- restore hinting state
self.ui:handleEvent(Event:new("RestoreHinting"))
-- restore page scroll
self.view.page_scroll = self.orig_page_scroll
-- restore footer visibility
self.view.footer_visible = self.orig_view_footer_visibility
-- restore view bgcolor
self.view.outer_page_color = self.orig_view_bgcolor
-- restore reflow mode
self.document.configurable.text_wrap = self.orig_reflow_mode
-- restore view dimens
self.ui:handleEvent(Event:new("RestoreDimensions", self.orig_view_dimen))
self.view:recalculate()
-- Exiting should have the same look and feel with entering.
if self.orig_reflow_mode == 1 then
self.ui:handleEvent(Event:new("RestoreZoomMode"))
else
self:setCropZoomMode(confirmed)
end
end
function ReaderCropping:setCropZoomMode(confirmed)
if confirmed then
-- if original zoom mode is "page???", set zoom mode to "content???"
local zoom_mode_type = self.orig_zoom_mode:match("page(.*)")
self:setZoomMode(zoom_mode_type
and "content"..zoom_mode_type
or self.orig_zoom_mode)
self.ui:handleEvent(Event:new("InitScrollPageStates"))
else
self:setZoomMode(self.orig_zoom_mode)
end
end
function ReaderCropping:setZoomMode(mode)
self.ui:handleEvent(Event:new("SetZoomMode", mode))
end
function ReaderCropping:onReadSettings(config)
self.document.bbox = config:readSetting("bbox")
end
function ReaderCropping:onSaveSettings()
self.ui.doc_settings:saveSetting("bbox", self.document.bbox)
end
return ReaderCropping