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控件可滚动时接近上下边缘控件会淡出

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This commit is contained in:
MrZ626
2021-05-27 15:19:05 +08:00
parent dc2abfe043
commit 5adda6adaa
1 changed files with 45 additions and 18 deletions
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49
Zframework/widget.lua
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@@ -1,10 +1,13 @@
local gc=love.graphics local gc=love.graphics
local gc_translate=gc.translate local gc_push,gc_pop,gc_clear,gc_origin=gc.push,gc.pop,gc.clear,gc.origin
local gc_translate,gc_scale=gc.translate,gc.scale
local gc_setCanvas,gc_setBlendMode=gc.setCanvas,gc.setBlendMode
local gc_setColor,gc_setLineWidth=gc.setColor,gc.setLineWidth local gc_setColor,gc_setLineWidth=gc.setColor,gc.setLineWidth
local gc_draw,gc_line=gc.draw,gc.line local gc_draw,gc_line=gc.draw,gc.line
local gc_rectangle=gc.rectangle local gc_rectangle=gc.rectangle
local gc_print,gc_printf=gc.print,gc.printf local gc_print,gc_printf=gc.print,gc.printf
local kb=love.keyboard local kb=love.keyboard
local next=next local next=next
@@ -14,8 +17,8 @@ local sub,ins=string.sub,table.insert
local getFont,setFont,mStr=getFont,setFont,mStr local getFont,setFont,mStr=getFont,setFont,mStr
local mDraw,mDraw_X,mDraw_Y=ADRAW.draw,ADRAW.simpX,ADRAW.simpY local mDraw,mDraw_X,mDraw_Y=ADRAW.draw,ADRAW.simpX,ADRAW.simpY
local downArrowIcon=DOGC{60,30,{'fPoly',0,0,30,30,60,0}} local downArrowIcon=DOGC{60,35,{'fPoly',0,0,30,35,60,0}}
local upArrowIcon=DOGC{60,30,{'fPoly',0,30,30,0,60,30}} local upArrowIcon=DOGC{60,35,{'fPoly',0,35,30,0,60,35}}
local clearIcon=DOGC{40,40, local clearIcon=DOGC{40,40,
{'fRect',16,4,8,2}, {'fRect',16,4,8,2},
{'fRect',8,0,24,2}, {'fRect',8,0,24,2},
@@ -1242,23 +1245,47 @@ function WIDGET.update()
if W.update then W:update()end if W.update then W:update()end
end end
end end
local scaleK
local widgetCanvas
local widgetCover do
local L={1280,720,{'fRect',0,40,1280,640}}
for i=0,20 do
ins(L,{'setCL',1,1,1,i/20})
ins(L,{'fRect',0,2*i,1280,2})
ins(L,{'fRect',0,720-2*i,1280,2})
end
widgetCover=DOGC(L)
end
function WIDGET.draw() function WIDGET.draw()
if SCR.k~=scaleK then
scaleK=SCR.k
widgetCanvas=gc.newCanvas(1280*scaleK,720*scaleK)
end
gc_setCanvas(widgetCanvas)
gc_clear(1,1,1,0)
gc_push('transform')
gc_origin()
gc_scale(scaleK)
gc_translate(0,-WIDGET.scrollPos) gc_translate(0,-WIDGET.scrollPos)
for _,W in next,WIDGET.active do for _,W in next,WIDGET.active do
if not W.hide then if not W.hide then
W:draw() W:draw()
end end
end end
gc_translate(0,WIDGET.scrollPos) gc_origin()
if WIDGET.scrollHeight>0 then
gc_setColor(1,1,1) gc_setColor(1,1,1)
if WIDGET.scrollPos>0 then if WIDGET.scrollHeight>0 then
mDraw(upArrowIcon,640,20) if WIDGET.scrollPos>0 then mDraw(upArrowIcon,640,25)end
end if WIDGET.scrollPos<WIDGET.scrollHeight then mDraw(downArrowIcon,640,695)end
if WIDGET.scrollPos<WIDGET.scrollHeight then gc_setBlendMode('multiply','premultiplied')
mDraw(downArrowIcon,640,700) gc_draw(widgetCover)
end gc_setBlendMode('alpha')
end end
gc_pop()
gc_setCanvas()
gc_draw(widgetCanvas,nil,nil,nil,1/scaleK)
end end
return WIDGET return WIDGET