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add cursor functionality

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This commit is contained in:
union2find
2016-04-21 22:13:10 +08:00
parent bb00055293
commit d6fcc9adf9
4 changed files with 298 additions and 221 deletions
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29
frontend/ui/widget/scrolltextwidget.lua
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@@ -15,6 +15,9 @@ Text widget with vertical scroll bar
--]]
local ScrollTextWidget = InputContainer:new{
text = nil,
charlist = nil,
charpos = nil,
editable = false,
face = nil,
fgcolor = Blitbuffer.COLOR_BLACK,
width = 400,
@@ -25,8 +28,12 @@ local ScrollTextWidget = InputContainer:new{
}
function ScrollTextWidget:init()
print("####################################################### ScrollTextWidget width", self.width)
self.text_widget = TextBoxWidget:new{
text = self.text,
charlist = self.charlist,
charpos = self.charpos,
editable = self.editable,
face = self.face,
fgcolor = self.fgcolor,
width = self.width - self.scroll_bar_width - self.text_scroll_span,
@@ -38,12 +45,12 @@ function ScrollTextWidget:init()
enable = visible_line_count < total_line_count,
low = 0,
high = visible_line_count/total_line_count,
width = Screen:scaleBySize(6),
width = self.scroll_bar_width,
height = self.height,
}
local horizontal_group = HorizontalGroup:new{}
table.insert(horizontal_group, self.text_widget)
table.insert(horizontal_group, HorizontalSpan:new{width = Screen:scaleBySize(6)})
table.insert(horizontal_group, HorizontalSpan:new{self.text_scroll_span})
table.insert(horizontal_group, self.v_scroll_bar)
self[1] = horizontal_group
self.dimen = Geom:new(self[1]:getSize())
@@ -59,23 +66,13 @@ function ScrollTextWidget:init()
end
end
function ScrollTextWidget:updateScrollBar(text)
local virtual_line_num = text:getVirtualLineNum()
local visible_line_count = text:getVisLineCount()
local all_line_count = text:getAllLineCount()
self.v_scroll_bar:set(
(virtual_line_num - 1) / all_line_count,
(virtual_line_num - 1 + visible_line_count) / all_line_count
)
end
function ScrollTextWidget:onScrollText(arg, ges)
if ges.direction == "north" then
self.text_widget:scrollDown()
self:updateScrollBar(self.text_widget)
low, high = self.text_widget:scrollDown()
self.v_scroll_bar:set(low, high)
elseif ges.direction == "south" then
self.text_widget:scrollUp()
self:updateScrollBar(self.text_widget)
low, high = self.text_widget:scrollUp()
self.v_scroll_bar:set(low, high)
end
UIManager:setDirty(self.dialog, function()
return "partial", self.dimen