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koreader/frontend/apps/reader/modules/readerfont.lua
poire-z 850be52177
Keep some menus open when Tap or Hold (#4189)
TouchMenu: added options to menu items with the following defaults:
    keep_menu_open = false
    hold_keep_menu_open = true
So, default for Tap callback is to close menu, and for Hold callback
to keep menu open.
In both cases, provide the TouchMenu instance as the 1st argument to
the callback functions (instead of a refresh_menu_func I added in #3941)
so the callback can do more things, like closing, refreshing,
changing menu items text and re-ordering...

ReaderZooming: show symbol for default (like it was done for
ReaderFont, ReaderHyphenation...)
TextEditor plugin: update the previously opened files list in real
time, so the menu can be kept open and used as the TextEditor main
interface.
SSH plugin: keep menu open and update the Start/Stop state in real time
ReadTimer plugin: tried to do what feels right (but I don't use it)

Also remove forgotten cp in the move/paste file code
2018-09-04 23:55:58 +02:00

417 lines
15 KiB
Lua
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local CenterContainer = require("ui/widget/container/centercontainer")
local ConfirmBox = require("ui/widget/confirmbox")
local Device = require("device")
local Event = require("ui/event")
local Input = Device.input
local InputContainer = require("ui/widget/container/inputcontainer")
local Menu = require("ui/widget/menu")
local MultiConfirmBox = require("ui/widget/multiconfirmbox")
local Notification = require("ui/widget/notification")
local Screen = require("device").screen
local UIManager = require("ui/uimanager")
local T = require("ffi/util").template
local _ = require("gettext")
local ReaderFont = InputContainer:new{
font_face = nil,
font_size = nil,
line_space_percent = nil,
font_menu_title = _("Font"),
face_table = nil,
-- default gamma from crengine's lvfntman.cpp
gamma_index = nil,
steps = {0,1,1,1,1,1,2,2,2,3,3,3,4,4,5},
gestureScale = Screen:getWidth() * FRONTLIGHT_SENSITIVITY_DECREASE,
}
function ReaderFont:init()
if Device:hasKeyboard() then
-- add shortcut for keyboard
self.key_events = {
ShowFontMenu = { {"F"}, doc = "show font menu" },
IncreaseSize = {
{ "Shift", Input.group.PgFwd },
doc = "increase font size",
event = "ChangeSize", args = "increase" },
DecreaseSize = {
{ "Shift", Input.group.PgBack },
doc = "decrease font size",
event = "ChangeSize", args = "decrease" },
IncreaseLineSpace = {
{ "Alt", Input.group.PgFwd },
doc = "increase line space",
event = "ChangeLineSpace", args = "increase" },
DecreaseLineSpace = {
{ "Alt", Input.group.PgBack },
doc = "decrease line space",
event = "ChangeLineSpace", args = "decrease" },
}
end
-- build face_table for menu
self.face_table = {}
local face_list = cre.getFontFaces()
for k,v in ipairs(face_list) do
table.insert(self.face_table, {
text_func = function()
-- defaults are hardcoded in credocument.lua
local default_font = G_reader_settings:readSetting("cre_font") or self.ui.document.default_font
local fallback_font = G_reader_settings:readSetting("fallback_font") or self.ui.document.fallback_font
local text = v
if v == default_font then
text = text .. ""
end
if v == fallback_font then
text = text .. " <20>"
end
return text
end,
callback = function()
self:setFont(v)
end,
hold_callback = function(touchmenu_instance)
self:makeDefault(v, touchmenu_instance)
end,
checked_func = function()
return v == self.font_face
end
})
face_list[k] = {text = v}
end
if self:hasFontsTestSample() then
self.face_table[#self.face_table].separator = true
table.insert(self.face_table, {
text = _("Generate fonts test HTML document"),
callback = function()
UIManager:show(ConfirmBox:new{
text = _("Would you like to generate an HTML document showing some sample text rendered with each available font?");
ok_callback = function()
self:buildFontsTestDocument()
end
})
end
})
end
self.ui.menu:registerToMainMenu(self)
end
function ReaderFont:onReaderReady()
self:setupTouchZones()
end
function ReaderFont:setupTouchZones()
if Device:isTouchDevice() then
self.ui:registerTouchZones({
{
id = "id_spread",
ges = "spread",
screen_zone = {
ratio_x = 0, ratio_y = 0, ratio_w = 1, ratio_h = 1,
},
handler = function(ges) return self:onAdjustSpread(ges) end
},
{
id = "id_pinch",
ges = "pinch",
screen_zone = {
ratio_x = 0, ratio_y = 0, ratio_w = 1, ratio_h = 1,
},
handler = function(ges) return self:onAdjustPinch(ges) end
},
})
end
end
function ReaderFont:onSetDimensions(dimen)
self.dimen = dimen
end
function ReaderFont:onReadSettings(config)
self.font_face = config:readSetting("font_face")
or G_reader_settings:readSetting("cre_font")
or self.ui.document.default_font
self.ui.document:setFontFace(self.font_face)
self.header_font_face = config:readSetting("header_font_face")
or G_reader_settings:readSetting("header_font")
or self.ui.document.header_font
self.ui.document:setHeaderFont(self.header_font_face)
self.font_size = config:readSetting("font_size")
or G_reader_settings:readSetting("copt_font_size")
or DCREREADER_CONFIG_DEFAULT_FONT_SIZE or 22
self.ui.document:setFontSize(Screen:scaleBySize(self.font_size))
self.font_embolden = config:readSetting("font_embolden")
or G_reader_settings:readSetting("copt_font_weight") or 0
self.ui.document:toggleFontBolder(self.font_embolden)
self.font_hinting = config:readSetting("font_hinting")
or G_reader_settings:readSetting("copt_font_hinting") or 2 -- auto (default in cre.cpp)
self.ui.document:setFontHinting(self.font_hinting)
self.font_kerning = config:readSetting("font_kerning")
or G_reader_settings:readSetting("copt_font_kerning") or 1 -- freetype (default in cre.cpp)
self.ui.document:setFontKerning(self.font_kerning)
self.space_condensing = config:readSetting("space_condensing")
or G_reader_settings:readSetting("copt_space_condensing") or 75
self.ui.document:setSpaceCondensing(self.space_condensing)
self.line_space_percent = config:readSetting("line_space_percent")
or G_reader_settings:readSetting("copt_line_spacing")
or DCREREADER_CONFIG_LINE_SPACE_PERCENT_MEDIUM
self.ui.document:setInterlineSpacePercent(self.line_space_percent)
self.gamma_index = config:readSetting("gamma_index")
or G_reader_settings:readSetting("copt_font_gamma")
or DCREREADER_CONFIG_DEFAULT_FONT_GAMMA or 15 -- gamma = 1.0
self.ui.document:setGammaIndex(self.gamma_index)
-- Dirty hack: we have to add following call in order to set
-- m_is_rendered(member of LVDocView) to true. Otherwise position inside
-- document will be reset to 0 on first view render.
-- So far, I don't know why this call will alter the value of m_is_rendered.
table.insert(self.ui.postInitCallback, function()
self.ui:handleEvent(Event:new("UpdatePos"))
end)
end
function ReaderFont:onShowFontMenu()
-- build menu widget
local main_menu = Menu:new{
title = self.font_menu_title,
item_table = self.face_table,
width = Screen:getWidth() - 100,
height = Screen:getHeight() / 2,
single_line = true,
perpage_custom = 8,
}
-- build container
local menu_container = CenterContainer:new{
main_menu,
dimen = Screen:getSize(),
}
main_menu.close_callback = function ()
UIManager:close(menu_container)
end
-- show menu
main_menu.show_parent = menu_container
UIManager:show(menu_container)
return true
end
--[[
UpdatePos event is used to tell ReaderRolling to update pos.
--]]
function ReaderFont:onChangeSize(direction, font_delta)
local delta = direction == "decrease" and -1 or 1
if font_delta then
self.font_size = self.font_size + font_delta * delta
else
self.font_size = self.font_size + delta
end
self.ui:handleEvent(Event:new("SetFontSize", self.font_size))
return true
end
function ReaderFont:onSetFontSize(new_size)
if new_size > 255 then new_size = 255 end
if new_size < 12 then new_size = 12 end
self.font_size = new_size
self.ui.document:setFontSize(Screen:scaleBySize(new_size))
self.ui:handleEvent(Event:new("UpdatePos"))
UIManager:show(Notification:new{
text = T( _("Font size set to %1."), self.font_size),
timeout = 2,
})
return true
end
function ReaderFont:onSetLineSpace(space)
self.line_space_percent = math.min(200, math.max(80, space))
UIManager:show(Notification:new{
text = T( _("Line spacing set to %1%."), self.line_space_percent),
timeout = 2,
})
self.ui.document:setInterlineSpacePercent(self.line_space_percent)
self.ui:handleEvent(Event:new("UpdatePos"))
return true
end
function ReaderFont:onToggleFontBolder(toggle)
self.font_embolden = toggle
self.ui.document:toggleFontBolder(toggle)
self.ui:handleEvent(Event:new("UpdatePos"))
return true
end
function ReaderFont:onSetFontHinting(mode)
self.font_hinting = mode
self.ui.document:setFontHinting(mode)
self.ui:handleEvent(Event:new("UpdatePos"))
return true
end
function ReaderFont:onSetFontKerning(mode)
self.font_kerning = mode
self.ui.document:setFontKerning(mode)
self.ui:handleEvent(Event:new("UpdatePos"))
return true
end
function ReaderFont:onSetSpaceCondensing(space)
self.space_condensing = space
self.ui.document:setSpaceCondensing(space)
self.ui:handleEvent(Event:new("UpdatePos"))
return true
end
function ReaderFont:onSetFontGamma(gamma)
self.gamma_index = gamma
self.ui.document:setGammaIndex(self.gamma_index)
local gamma_level = self.ui.document:getGammaLevel()
UIManager:show(Notification:new{
text = T( _("Font gamma set to %1."), gamma_level),
timeout = 2,
})
self.ui:handleEvent(Event:new("RedrawCurrentView"))
return true
end
function ReaderFont:onSaveSettings()
self.ui.doc_settings:saveSetting("font_face", self.font_face)
self.ui.doc_settings:saveSetting("header_font_face", self.header_font_face)
self.ui.doc_settings:saveSetting("font_size", self.font_size)
self.ui.doc_settings:saveSetting("font_embolden", self.font_embolden)
self.ui.doc_settings:saveSetting("font_hinting", self.font_hinting)
self.ui.doc_settings:saveSetting("font_kerning", self.font_kerning)
self.ui.doc_settings:saveSetting("space_condensing", self.space_condensing)
self.ui.doc_settings:saveSetting("line_space_percent", self.line_space_percent)
self.ui.doc_settings:saveSetting("gamma_index", self.gamma_index)
end
function ReaderFont:setFont(face)
if face and self.font_face ~= face then
self.font_face = face
UIManager:show(Notification:new{
text = T( _("Redrawing with font %1."), face),
timeout = 2,
})
self.ui.document:setFontFace(face)
-- signal readerrolling to update pos in new height
self.ui:handleEvent(Event:new("UpdatePos"))
end
end
function ReaderFont:makeDefault(face, touchmenu_instance)
if face then
UIManager:show(MultiConfirmBox:new{
text = T( _("Would you like %1 to be used as the default font (★), or the fallback font (<28>)?\n\nCharacters not found in the active font are shown in the fallback font instead."), face),
choice1_text = _("Default"),
choice1_callback = function()
G_reader_settings:saveSetting("cre_font", face)
if touchmenu_instance then touchmenu_instance:updateItems() end
end,
choice2_text = _("Fallback"),
choice2_callback = function()
if self.ui.document:setFallbackFontFace(face) then
G_reader_settings:saveSetting("fallback_font", face)
self.ui:handleEvent(Event:new("UpdatePos"))
end
if touchmenu_instance then touchmenu_instance:updateItems() end
end,
})
end
end
function ReaderFont:addToMainMenu(menu_items)
-- insert table to main reader menu
menu_items.change_font = {
text = self.font_menu_title,
sub_item_table = self.face_table,
}
end
function ReaderFont:onAdjustSpread(ges)
local step = math.ceil(2 * #self.steps * ges.distance / self.gestureScale)
local delta_int = self.steps[step] or self.steps[#self.steps]
local info = Notification:new{text = _("Increasing font size…")}
UIManager:show(info)
UIManager:forceRePaint()
self:onChangeSize("increase", delta_int)
UIManager:close(info)
return true
end
function ReaderFont:onAdjustPinch(ges)
local step = math.ceil(2 * #self.steps * ges.distance / self.gestureScale)
local delta_int = self.steps[step] or self.steps[#self.steps]
local info = Notification:new{text = _("Decreasing font size…")}
UIManager:show(info)
UIManager:forceRePaint()
self:onChangeSize("decrease", delta_int)
UIManager:close(info)
return true
end
function ReaderFont:hasFontsTestSample()
local font_test_sample = require("datastorage"):getSettingsDir() .. "/fonts-test-sample.html"
local lfs = require("libs/libkoreader-lfs")
return lfs.attributes(font_test_sample, "mode") == "file"
end
function ReaderFont:buildFontsTestDocument()
local font_test_sample = require("datastorage"):getSettingsDir() .. "/fonts-test-sample.html"
local f = io.open(font_test_sample, "r")
if not f then return nil end
local html_sample = f:read("*all")
f:close()
local dir = G_reader_settings:readSetting("home_dir")
if not dir then dir = require("apps/filemanager/filemanagerutil").getDefaultDir() end
if not dir then dir = "." end
local fonts_test_path = dir .. "/fonts-test-all.html"
f = io.open(fonts_test_path, "w")
-- Using <section><title>...</title></section> allows for a TOC to be built
f:write(string.format([[
<?xml version="1.0" encoding="UTF-8"?>
<html>
<head>
<title>%s</title>
</head>
<body>
<section id="list"><title>%s</title></section>
]], _("Available fonts test document"), _("AVAILABLE FONTS")))
local face_list = cre.getFontFaces()
f:write("<div style='margin: 2em'>\n")
for _, font_name in ipairs(face_list) do
local font_id = font_name:gsub(" ", "_"):gsub("'", "_")
f:write(string.format(" <div><a href='#%s'>%s</a></div>\n", font_id, font_name))
end
f:write("</div>\n\n")
for _, font_name in ipairs(face_list) do
local font_id = font_name:gsub(" ", "_"):gsub("'", "_")
f:write(string.format("<section id='%s'><title>%s</title></section>\n", font_id, font_name))
f:write(string.format("<div style='font-family: %s'>\n", font_name))
f:write(html_sample)
f:write("\n</div>\n\n")
end
f:write("</body></html>\n")
f:close()
UIManager:show(ConfirmBox:new{
text = T(_("Document created as:\n%1\n\nWould you like to read it now?"), fonts_test_path),
ok_callback = function()
UIManager:scheduleIn(1.0, function()
self.ui:switchDocument(fonts_test_path)
end)
end,
})
end
return ReaderFont