mirror of
https://github.com/koreader/koreader
synced 2024-10-31 21:20:20 +00:00
347 lines
8.7 KiB
Lua
347 lines
8.7 KiB
Lua
require "rendertext"
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require "keys"
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require "graphics"
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require "font"
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require "commands"
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SelectMenu = {
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-- font for displaying item names
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fsize = 22,
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-- font for page title
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tfsize = 25,
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-- font for paging display
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ffsize = 16,
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-- font for item shortcut
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sface = Font:getFace("scfont", 22),
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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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menu_title = "No Title",
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no_item_msg = "No items found.",
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item_array = {},
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items = 0,
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item_shortcuts = {
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"Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P",
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"A", "S", "D", "F", "G", "H", "J", "K", "L", "Del",
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"Z", "X", "C", "V", "B", "N", "M", ".", "Sym", "Ent",
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},
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last_shortcut = 0,
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-- state buffer
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page = 1,
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current = 1,
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oldcurrent = 0,
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selected_item = nil,
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commands = nil,
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}
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function SelectMenu:new(o)
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o = o or {}
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setmetatable(o, self)
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self.__index = self
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o.items = #o.item_array
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o.page = 1
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o.current = 1
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o.oldcurrent = 0
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o.selected_item = nil
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-- increase spacing for DXG so we don't have more than 30 shortcuts
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if fb.bb:getHeight() == 1200 then
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o.spacing = 37
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end
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o:addAllCommands()
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return o
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end
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function SelectMenu:getItemIndexByShortCut(c, perpage)
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if c == nil then return end -- unused key
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for _k,_v in ipairs(self.item_shortcuts) do
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if _v == c and _k <= self.last_shortcut then
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return (perpage * (self.page - 1) + _k)
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end
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end
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end
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function SelectMenu:addAllCommands()
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self.commands = Commands:new{}
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self.commands:add(KEY_FW_UP, nil, "",
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"previous item",
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function(sm)
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if sm.current == 1 then
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if sm.page > 1 then
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sm.current = sm.perpage
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sm.page = sm.page - 1
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sm.pagedirty = true
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end
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else
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sm.current = sm.current - 1
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sm.markerdirty = true
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end
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end
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)
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self.commands:add(KEY_FW_DOWN, nil, "",
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"next item",
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function(sm)
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if sm.current == sm.perpage then
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if sm.page < (sm.items / sm.perpage) then
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sm.current = 1
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sm.page = sm.page + 1
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sm.pagedirty = true
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end
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else
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if sm.page ~= math.floor(sm.items / sm.perpage) + 1
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or sm.current + (sm.page - 1) * sm.perpage < sm.items then
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sm.current = sm.current + 1
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sm.markerdirty = true
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end
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end
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end
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)
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self.commands:add({KEY_PGFWD, KEY_LPGFWD}, nil, "",
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"next page",
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function(sm)
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if sm.page < (sm.items / sm.perpage) then
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if sm.current + sm.page * sm.perpage > sm.items then
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sm.current = sm.items - sm.page * sm.perpage
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end
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sm.page = sm.page + 1
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sm.pagedirty = true
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else
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sm.current = sm.items - (sm.page - 1) * sm.perpage
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sm.markerdirty = true
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end
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end
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)
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self.commands:add({KEY_PGBCK, KEY_LPGBCK}, nil, "",
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"previous page",
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function(sm)
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if sm.page > 1 then
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sm.page = sm.page - 1
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sm.pagedirty = true
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else
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sm.current = 1
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sm.markerdirty = true
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end
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end
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)
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self.commands:add(KEY_FW_PRESS, nil, "",
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"select menu item",
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function(sm)
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if sm.last_shortcut < 30 then
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if sm.items == 0 then
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return "break"
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else
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self.selected_item = (sm.perpage * (sm.page - 1)
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+ sm.current)
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end
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end
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end
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)
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local KEY_Q_to_P = {}
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for i = KEY_Q, KEY_P do
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table.insert(KEY_Q_to_P, Keydef:new(i, nil, ""))
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end
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self.commands:addGroup("Q to P", KEY_Q_to_P,
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"Select menu item with Q to E key as shortcut",
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function(sm, keydef)
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sm.selected_item = sm:getItemIndexByShortCut(
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sm.item_shortcuts[ keydef.keycode - KEY_Q + 1 ], sm.perpage)
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end
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)
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local KEY_A_to_L = {}
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for i = KEY_A, KEY_L do
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table.insert(KEY_A_to_L, Keydef:new(i, nil, ""))
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end
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self.commands:addGroup("A to L", KEY_A_to_L,
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"Select menu item with A to L key as shortcut",
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function(sm, keydef)
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sm.selected_item = sm:getItemIndexByShortCut(
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sm.item_shortcuts[ keydef.keycode - KEY_A + 11 ], sm.perpage)
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end
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)
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local KEY_Z_to_M = {}
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for i = KEY_Z, KEY_M do
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table.insert(KEY_Z_to_M, Keydef:new(i, nil, ""))
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end
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self.commands:addGroup("Z to M", KEY_Z_to_M,
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"Select menu item with Z to M key as shortcut",
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function(sm, keydef)
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sm.selected_item = sm:getItemIndexByShortCut(
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sm.item_shortcuts[ keydef.keycode - KEY_Z + 21 ], sm.perpage)
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end
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)
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self.commands:add(KEY_DEL, nil, "",
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"Select menu item with del key as shortcut",
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function(sm)
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sm.selected_item = sm:getItemIndexByShortCut("Del", sm.perpage)
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end
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)
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self.commands:add(KEY_DOT, nil, "",
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"Select menu item with dot key as shortcut",
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function(sm)
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sm.selected_item = sm:getItemIndexByShortCut(".", sm.perpage)
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end
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)
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self.commands:add({KEY_SYM, KEY_SLASH}, nil, "",
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"Select menu item with sym/slash key as shortcut",
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function(sm)
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-- DXG has slash after dot
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sm.selected_item = sm:getItemIndexByShortCut("Sym", sm.perpage)
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end
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)
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self.commands:add(KEY_ENTER, nil, "",
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"Select menu item with enter key as shortcut",
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function(sm)
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sm.selected_item = sm:getItemIndexByShortCut("Ent", sm.perpage)
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end
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)
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self.commands:add(KEY_BACK, nil, "",
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"Exit menu",
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function(sm)
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return "break"
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end
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)
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end
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function SelectMenu:clearCommands()
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self.commands = Commands:new{}
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self.commands:add(KEY_BACK, nil, "",
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"Exit menu",
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function(sm)
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return "break"
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end)
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end
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------------------------------------------------
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-- return the index of selected item
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------------------------------------------------
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function SelectMenu:choose(ypos, height)
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self.perpage = math.floor(height / self.spacing) - 2
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self.pagedirty = true
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self.markerdirty = false
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self.last_shortcut = 0
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while true do
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local cface = Font:getFace("cfont", 22)
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local tface = Font:getFace("tfont", 25)
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local fface = Font:getFace("ffont", 16)
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if self.pagedirty then
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self.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(10, ypos + 10, fb.bb:getWidth() - 20, self.title_H, 5)
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local x = 20
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local y = ypos + self.title_H
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renderUtf8Text(fb.bb, x, y, tface, self.menu_title, true)
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-- draw 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, cface,
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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, cface,
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self.no_item_msg, true)
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self.markerdirty = false
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self:clearCommands()
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else
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local c
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for c = 1, self.perpage do
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local i = (self.page - 1) * self.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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-- paint shortcut indications
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if c <= 10 or c > 20 then
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blitbuffer.paintBorder(fb.bb, 10, y-22, 29, 29, 2, 15)
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else
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fb.bb:paintRect(10, y-22, 29, 29, 3)
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end
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if self.item_shortcuts[c] ~= nil and
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string.len(self.item_shortcuts[c]) == 3 then
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-- print "Del", "Sym and "Ent"
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renderUtf8Text(fb.bb, 13, y, fface,
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self.item_shortcuts[c], true)
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else
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renderUtf8Text(fb.bb, 18, y, self.sface,
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self.item_shortcuts[c], true)
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end
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self.last_shortcut = c
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renderUtf8Text(fb.bb, 50, y, cface,
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self.item_array[i], true)
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end -- EOF if i <= self.items
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end -- EOF for
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end -- EOF if
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-- draw footer
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y = ypos + self.title_H + (self.spacing * self.perpage)
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+ self.foot_H + 5
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x = (fb.bb:getWidth() / 2) - 50
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renderUtf8Text(fb.bb, x, y, fface,
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"Page "..self.page.." of "..
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(math.ceil(self.items / self.perpage)), true)
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end
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if self.markerdirty then
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if not self.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(45, y, fb.bb:getWidth() - 60, 3, 0)
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fb:refresh(1, 45, 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(45, y, fb.bb:getWidth() - 60, 3, 15)
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if not self.pagedirty then
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fb:refresh(1, 45, y, fb.bb:getWidth() - 60, 3)
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end
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self.oldcurrent = self.current
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self.markerdirty = false
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end
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if self.pagedirty then
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fb:refresh(0, 0, ypos, fb.bb:getWidth(), height)
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self.pagedirty = false
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end
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local ev = input.saveWaitForEvent()
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ev.code = adjustKeyEvents(ev)
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if ev.type == EV_KEY and ev.value == EVENT_VALUE_KEY_PRESS then
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keydef = Keydef:new(ev.code, getKeyModifier())
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print("key pressed: "..tostring(keydef))
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command = self.commands:getByKeydef(keydef)
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if command ~= nil then
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print("command to execute: "..tostring(command))
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ret_code = command.func(self, keydef)
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else
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print("command not found: "..tostring(command))
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end
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if ret_code == "break" then
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break
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end
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if self.selected_item ~= nil then
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print("# selected "..self.selected_item)
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return self.selected_item, self.item_array[self.selected_item]
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end
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end -- EOF if
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end -- EOF while
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return nil
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end
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