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add bbox adjust by panning gesture

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This commit is contained in:
chrox
2013-02-20 22:50:57 +08:00
parent 46357d617c
commit 7117cb8710
1 changed files with 34 additions and 3 deletions
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37
frontend/ui/bbox.lua
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@@ -14,7 +14,7 @@ function BBoxWidget:init()
--DEBUG("used page bbox on page", self.view.state.page, self.page_bbox)
if Device:isTouchDevice() then
self.ges_events = {
AdjustCrop = {
TapAdjust = {
GestureRange:new{
ges = "tap",
range = Geom:new{
@@ -24,6 +24,16 @@ function BBoxWidget:init()
}
}
},
PanAdjust = {
GestureRange:new{
ges = "pan",
range = Geom:new{
x = 0, y = 0,
w = Screen:getWidth(),
h = Screen:getHeight()
}
}
},
ConfirmCrop = {
GestureRange:new{
ges = "double_tap",
@@ -93,7 +103,7 @@ function BBoxWidget:screen_to_page()
return bbox
end
function BBoxWidget:onAdjustCrop(arg, ges)
function BBoxWidget:onAdjustScreenBBox(ges, rate)
--DEBUG("adjusting crop bbox with pos", ges.pos)
local bbox = self.screen_bbox
local upper_left = Geom:new{ x = bbox.x0, y = bbox.y0}
@@ -123,7 +133,28 @@ function BBoxWidget:onAdjustCrop(arg, ges)
x1 = bottom_right.x,
y1 = bottom_right.y
}
UIManager.repaint_all = true
if rate then
local last_time = self.last_time or {0, 0}
local this_time = { util.gettime() }
local elap_time = (this_time[1] - last_time[1]) * 1000 + (this_time[2] - last_time[2]) / 1000 -- in millisec
if elap_time > 1000 / rate then
UIManager.repaint_all = true
self.last_time = this_time
end
else
UIManager.repaint_all = true
end
end
function BBoxWidget:onTapAdjust(arg, ges)
self:onAdjustScreenBBox(ges)
return true
end
function BBoxWidget:onPanAdjust(arg, ges)
-- up to 3 updates per second
self:onAdjustScreenBBox(ges, 3.0)
return true
end
function BBoxWidget:onConfirmCrop()