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[UX] Add spread/pinch & font increase/decrease to gesture manager (#5188)

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* Add spread/pinch gesture to gesture manager
ability to disable: 
https://www.mobileread.com/forums/showthread.php?t=321818
https://github.com/koreader/koreader/pull/4815#issuecomment-478462416

* Add increase/decrease font size action gesture
https://github.com/koreader/koreader/issues/4727#issuecomment-475950484
This commit is contained in:
Robert
2019-08-07 20:18:36 +02:00
committed by Frans de Jonge
parent a09e3865c1
commit 9baf055154
2 changed files with 54 additions and 45 deletions
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32
frontend/apps/reader/modules/readergesture.lua
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@@ -85,6 +85,9 @@ local action_strings = {
zoom_content = _("Zoom to fit content"),
zoom_page = _("Zoom to fit page"),
increase_font = _("Increase font size"),
decrease_font = _("Decrease font size"),
folder_up = _("Folder up"),
show_plus_menu = _("Show plus menu"),
folder_shortcuts = _("Folder shortcuts"),
@@ -209,6 +212,8 @@ function ReaderGesture:init()
two_finger_swipe_northwest = "ignore",
two_finger_swipe_southeast = "ignore",
two_finger_swipe_southwest = "ignore",
spread_gesture = self.ges_mode == "gesture_reader" and "increase_font" or "ignore",
pinch_gesture = self.ges_mode == "gesture_reader" and "decrease_font" or "ignore",
}
local gm = G_reader_settings:readSetting(self.ges_mode)
if gm == nil then G_reader_settings:saveSetting(self.ges_mode, {}) end
@@ -617,6 +622,19 @@ Default value: %1]]), GestureDetector.SWIPE_INTERVAL/1000),
},
},
})
table.insert(menu_items.gesture_manager.sub_item_table, {
text = _("Spread and pinch"),
sub_item_table = {
{
text_func = function() return actionTextFunc("spread_gesture", _("Spread")) end,
sub_item_table = self:buildMenu("spread_gesture", self.default_gesture["spread_gesture"]),
},
{
text_func = function() return actionTextFunc("pinch_gesture", _("Pinch")) end,
sub_item_table = self:buildMenu("pinch_gesture", self.default_gesture["pinch_gesture"]),
},
}
})
end
end
@@ -685,6 +703,9 @@ function ReaderGesture:buildMenu(ges, default)
{"wifi_off", Device:hasWifiToggle()},
{"toggle_wifi", Device:hasWifiToggle(), true},
{"increase_font", not self.is_docless},
{"decrease_font", not self.is_docless, true},
{"toggle_bookmark", not self.is_docless, true},
{"toggle_page_flipping", not self.is_docless, true},
{"toggle_reflow", not self.is_docless, true},
@@ -1101,7 +1122,12 @@ function ReaderGesture:setupGesture(ges, action)
"paging_swipe",
}
end
elseif ges == "spread_gesture" then
ges_type = "spread"
zone = zone_fullscreen
elseif ges == "pinch_gesture" then
ges_type = "pinch"
zone = zone_fullscreen
else return
end
self:registerGesture(ges, action, ges_type, zone, overrides, direction, distance)
@@ -1370,6 +1396,10 @@ function ReaderGesture:gestureAction(action, ges)
timeout = 1,
})
end
elseif action == "increase_font" then
self.ui:handleEvent(Event:new("AdjustFontSize", ges, 1))
elseif action == "decrease_font" then
self.ui:handleEvent(Event:new("AdjustFontSize", ges, -1))
elseif action == "suspend" then
UIManager:suspend()
elseif action == "exit" then