vgui: DPI Aware DFrame

source/gamemodes/prophuntextended/gamemode/vgui/dframedpi.lua

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+--[[
+	The MIT License (MIT)
+	
+	Copyright (c) 2015-2019 Xaymar
+
+	Permission is hereby granted, free of charge, to any person obtaining a copy
+	of this software and associated documentation files (the "Software"), to deal
+	in the Software without restriction, including without limitation the rights
+	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+	copies of the Software, and to permit persons to whom the Software is
+	furnished to do so, subject to the following conditions:
+
+	The above copyright notice and this permission notice shall be included in all
+	copies or substantial portions of the Software.
+
+	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+	SOFTWARE.
+--]]
+
+-- DPI Aware Frame
+
+local UI = {}
+
+function UI:Init()
+    self.scale = 1.0
+    self.fontdata = FontManager:CreateFontData({})
+    
+	UIManager:Listen("UpdateDPI", self, function(dpi) self:UpdateDPI(dpi) end)
+    self:UpdateDPI(UIManager:GetDPIScale())
+end
+
+function UI:OnRemove()
+    UIManager:Silence("UpdateDPI", self)
+end
+
+function UI:SetFontEx(fontData)
+    self.fontdata = fontData
+    
+    local scaled = table.Merge({}, self.fontdata)
+    scaled.size = math.Round(self.fontdata.size * self.scale)
+    scaled.blursize = math.Round(self.fontdata.blursize * self.scale)
+    self.font = FontManager:Request(FontManager:ToName(scaled), scaled)
+
+    self.lblTitle:SetFont(self.font)
+    self.lblTitle:InvalidateLayout()
+    self.lblTitle:InvalidateParent()
+    --self.btnClose:SetFont(self.font)
+    --self.btnMinim:SetFont(self.font)
+    --self.btnMaxim:SetFont(self.font)
+end
+
+function UI:UpdateDPI(dpi)
+    self.scale = dpi
+    self:SetFontEx(self.fontdata)
+    --self:InvalidateLayout()
+    --self:InvalidateParent()
+end
+
+derma.DefineControl("DFrameDPI", "DPI Aware DFrame (requires UIManager)", UI, "DFrame");