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dpanpanel.lua
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245 lines (178 loc) · 4.48 KB
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local PANEL = {}
AccessorFunc( PANEL, "pnlCanvas", "Canvas" )
function PANEL:Init()
self.pnlCanvas = vgui.Create( "Panel", self )
self:GetCanvas().OnMousePressed = function( s, code )
s:GetParent():OnMousePressed( code )
end
self:GetCanvas():SetMouseInputEnabled( true )
self:GetCanvas().PerformLayout = function( pnl )
self:PerformLayout()
self:InvalidateParent()
end
function self.pnlCanvas:Think()
local mousex = math.Clamp( gui.MouseX(), 1, ScrW() - 1 )
local mousey = math.Clamp( gui.MouseY(), 1, ScrH() - 1 )
if ( self.Dragging ) then
local x = mousex - self.Dragging[1]
local y = mousey - self.Dragging[2]
self:SetPos( x, y )
self:PerformLayout()
end
if ( self.Hovered ) then
self:SetCursor( "sizeall" )
return
end
self:SetCursor( "arrow" )
end
function self.pnlCanvas:OnMousePressed( keyCode )
self.Dragging = { gui.MouseX() - self.x, gui.MouseY() - self.y }
self:MouseCapture( true )
end
function self.pnlCanvas:OnMouseReleased( keyCode )
self.Dragging = nil
self.Sizing = nil
self:MouseCapture( false )
self:InvalidateParent()
end
self:SetMouseInputEnabled( true )
--This turns off the engine drawing
self:SetPaintBackgroundEnabled( false )
self:SetPaintBorderEnabled( false )
self:SetPaintBackground( false )
end
function PANEL:Think()
if ( self.Hovered ) then
self:SetCursor( "sizeall" )
return
end
self:SetCursor( "arrow" )
end
function PANEL:OnMousePressed( ... )
self.pnlCanvas:OnMousePressed( ... )
end
function PANEL:OnMouseReleased( ... )
self.pnlCanvas:OnMouseReleased( ... )
end
function PANEL:AddItem( pnl )
pnl:SetParent( self:GetCanvas() )
end
function PANEL:OnChildAdded( child )
self:AddItem( child )
-- Anchor all children to top-left (so they are all snug)
local can = self:GetCanvas()
local mx, my
for _, p in pairs( can:GetChildren() ) do
local x, y = p:GetPos()
mx = mx or x
my = my or y
if ( x < mx ) then mx = x end
if ( y < my ) then my = y end
end
if ( mx ) then
for _, p in pairs( can:GetChildren() ) do
local x, y = p:GetPos()
p:SetPos( x - mx, y - my )
end
local x, y = can:GetPos()
can:SetPos( x + mx, y + my )
end
end
function PANEL:SizeToContents()
self:SetSize( self:GetCanvas():GetSize() )
end
function PANEL:OnScroll( x, y )
self:GetCanvas():SetPos( x, y )
end
function PANEL:ScrollToChild( panel )
self:PerformLayout()
local x, y = self:GetCanvas():GetChildPosition( panel )
local w, h = panel:GetSize()
y = y + h * 0.5
x = x + w * 0.5
y = y - self:GetTall() * 0.5
x = x - self:GetWide() * 0.5
self:OnScroll( x, y )
end
function PANEL:PerformLayout()
local can = self:GetCanvas()
can:SizeToChildren( true, true )
-- Restrict movement to the size of this panel
local x, y, w, h = can:GetBounds()
if ( w > self:GetWide() ) then
if ( x > 0 ) then
can:SetPos( 0, y )
x = 0
end
--right
if ( x + w < self:GetWide() ) then
local nx = self:GetWide() - w
can:SetPos( nx, y )
x = nx
end
end
if ( w < self:GetWide() ) then
if ( x < 0 ) then
can:SetPos( 0, y )
x = 0
end
--left
if ( x + w > self:GetWide() ) then
local nx = self:GetWide() - w
can:SetPos( nx, y )
x = nx
end
end
if ( h > self:GetTall() ) then
if ( y > 0 ) then
can:SetPos( x, 0 )
y = 0
end
--up
if ( y + h < self:GetTall() ) then
local ny = self:GetTall() - h
can:SetPos( x, ny )
y = ny
end
end
if ( h < self:GetTall() ) then
if ( y < 0 ) then
can:SetPos( x, 0 )
y = 0
end
--down
if ( y + h > self:GetTall() ) then
local ny = self:GetTall() - h
can:SetPos( x, ny )
y = ny
end
end
end
function PANEL:Clear() return self:GetCanvas():Clear() end
function PANEL:GenerateExample( class, propsheet, width, height )
local dpan = vgui.Create( "Panel" )
dpan:Dock( FILL )
propsheet:AddSheet( class, dpan )
local dpl = vgui.Create( "DPanel", dpan )
dpl:SetSize( 200, 200 )
dpl:SetPos( 100, 100 )
local panl = vgui.Create( "DPanPanel", dpl )
panl:Dock( FILL )
local bl1 = panl:Add( "DButton" )
bl1:SetText( "Small" )
local bl2 = panl:Add( "DButton" )
bl2:SetPos( 100, 100 )
bl2:SetText( "Contents" )
local dpr = vgui.Create( "DPanel", dpan )
dpr:SetWide( width / 2 )
dpr:SetSize( 200, 200 )
dpr:SetPos( 310, 100 )
local panr = vgui.Create( "DPanPanel", dpr )
panr:Dock( FILL )
local br1 = panr:Add( "DButton" )
br1:SetText( "Big" )
local br2 = panr:Add( "DButton" )
br2:SetPos( 300, 300 )
br2:SetText( "Contents" )
end
derma.DefineControl( "DPanPanel", "", PANEL, "DPanel" )