mirror of https://github.com/koreader/koreader
mod: toc and jumpstack refactored
Qingping Hou
12 years ago
parent
02713ae2ab
commit
fa5b0c9874
@ -1,200 +0,0 @@
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require "rendertext"
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require "keys"
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require "graphics"
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require "fontchooser"
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TOCMenu = {
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-- font for displaying toc item names
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fsize = 22,
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face = nil,
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fhash = nil,
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-- font for page title
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tfsize = 25,
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tface = nil,
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tfhash = nil,
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-- font for paging display
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ffsize = 16,
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fface = nil,
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ffhash = nil,
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-- title height
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title_H = 40,
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-- spacing between lines
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spacing = 36,
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-- foot height
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foot_H = 27,
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-- state buffer
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toc = {},
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items = 14,
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page = 1,
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current = 1,
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oldcurrent = 0,
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}
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function TOCMenu:new(toc)
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instance = self
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instance.toc = toc
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instance.items = #toc
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return instance
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end
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function TOCMenu:dump()
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for k,v in pairs(self.toc) do
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print("TOC item: "..k)
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for key,value in pairs(v) do
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print(" "..key..": "..value)
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end
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end
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end
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function TOCMenu:updateFont()
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if self.fhash ~= FontChooser.cfont..self.fsize then
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self.face = freetype.newBuiltinFace(FontChooser.cfont, self.fsize)
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self.fhash = FontChooser.cfont..self.fsize
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end
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if self.tfhash ~= FontChooser.tfont..self.tfsize then
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self.tface = freetype.newBuiltinFace(FontChooser.tfont, self.tfsize)
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self.tfhash = FontChooser.tfont..self.tfsize
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end
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if self.ffhash ~= FontChooser.ffont..self.ffsize then
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self.fface = freetype.newBuiltinFace(FontChooser.ffont, self.ffsize)
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self.ffhash = FontChooser.ffont..self.ffsize
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end
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end
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function TOCMenu:choose(ypos, height)
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local perpage = math.floor(height / self.spacing) - 2
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local pagedirty = true
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local markerdirty = false
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self:updateFont()
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local prevItem = function ()
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if self.current == 1 then
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if self.page > 1 then
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self.current = perpage
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self.page = self.page - 1
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pagedirty = true
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end
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else
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self.current = self.current - 1
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markerdirty = true
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end
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end
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local nextItem = function ()
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if self.current == perpage then
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if self.page < (self.items / perpage) then
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self.current = 1
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self.page = self.page + 1
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pagedirty = true
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end
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else
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if self.page ~= math.floor(self.items / perpage) + 1
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or self.current + (self.page-1)*perpage < self.items then
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self.current = self.current + 1
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markerdirty = true
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end
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end
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end
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while true do
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if pagedirty then
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markerdirty = true
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-- draw menu title
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fb.bb:paintRect(0, ypos, fb.bb:getWidth(), self.title_H + 10, 0)
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fb.bb:paintRect(30, ypos + 10, fb.bb:getWidth() - 60, self.title_H, 5)
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x = fb.bb:getWidth() - 260 -- move text to the right
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y = ypos + self.title_H
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renderUtf8Text(fb.bb, x, y, self.tface, self.tfhash,
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"Table of Contents", true)
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-- draw toc items
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fb.bb:paintRect(0, ypos + self.title_H + 10, fb.bb:getWidth(), height - self.title_H, 0)
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if self.items == 0 then
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y = ypos + self.title_H + (self.spacing * 2)
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renderUtf8Text(fb.bb, 30, y, self.face, self.fhash,
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"Oops... Bad news for you:", true)
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y = y + self.spacing
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renderUtf8Text(fb.bb, 30, y, self.face, self.fhash,
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"This document doesn't have a TOC.", true)
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markerdirty = false
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else
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local c
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for c = 1, perpage do
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local i = (self.page - 1) * perpage + c
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if i <= self.items then
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y = ypos + self.title_H + (self.spacing * c)
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renderUtf8Text(fb.bb, 30, y, self.face, self.fhash,
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(" "):rep(self.toc[i]["depth"]-1)..self.toc[i]["title"], true)
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end
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end
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end
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-- draw footer
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y = ypos + self.title_H + (self.spacing * perpage) + self.foot_H + 5
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x = (fb.bb:getWidth() / 2) - 50
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renderUtf8Text(fb.bb, x, y, self.fface, self.ffhash,
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"Page "..self.page.." of "..(math.floor(self.items / perpage)+1), true)
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end
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if markerdirty then
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if not pagedirty then
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if self.oldcurrent > 0 then
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y = ypos + self.title_H + (self.spacing * self.oldcurrent) + 8
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fb.bb:paintRect(30, y, fb.bb:getWidth() - 60, 3, 0)
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fb:refresh(1, 30, y, fb.bb:getWidth() - 60, 3)
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end
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end
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-- draw new marker line
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y = ypos + self.title_H + (self.spacing * self.current) + 8
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fb.bb:paintRect(30, y, fb.bb:getWidth() - 60, 3, 15)
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if not pagedirty then
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fb:refresh(1, 30, y, fb.bb:getWidth() - 60, 3)
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end
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self.oldcurrent = self.current
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markerdirty = false
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end
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if pagedirty then
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fb:refresh(0, 0, ypos, fb.bb:getWidth(), height)
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pagedirty = false
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end
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local ev = input.waitForEvent()
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if ev.type == EV_KEY and ev.value == EVENT_VALUE_KEY_PRESS then
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ev.code = adjustFWKey(ev.code)
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if ev.code == KEY_FW_UP then
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prevItem()
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elseif ev.code == KEY_FW_DOWN then
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nextItem()
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elseif ev.code == KEY_PGFWD then
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if self.page < (self.items / perpage) then
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if self.current + self.page*perpage > self.items then
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self.current = self.items - self.page*perpage
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end
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self.page = self.page + 1
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pagedirty = true
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else
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self.current = self.items - (self.page-1)*perpage
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markerdirty = true
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end
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elseif ev.code == KEY_PGBCK then
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if self.page > 1 then
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self.page = self.page - 1
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pagedirty = true
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else
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self.current = 1
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markerdirty = true
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end
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elseif ev.code == KEY_ENTER or ev.code == KEY_FW_PRESS then
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return self.toc[perpage*(self.page-1)+self.current]["page"]
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elseif ev.code == KEY_BACK then
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return nil
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end
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end
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end
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end
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