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allow emulator to specify a viewport

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This allows for Viewport debugging. It is configured via an environment
variable, EMULATE_READER_VIEWPORT. It works with Lua table syntax, e.g.:
EMULATE_READER_VIEWPORT="{x=10,w=550,y=5,h=790}"
This commit is contained in:
Hans-Werner Hilse
2014-11-27 10:15:44 +00:00
parent bf7ea7af6d
commit 677871cbf7
1 changed files with 7 additions and 0 deletions
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7
frontend/device/emulator/device.lua
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@@ -13,6 +13,13 @@ local Device = Generic:new{
}
function Device:init()
-- allows to set a viewport via environment variable
-- syntax is Lua table syntax, e.g. EMULATE_READER_VIEWPORT="{x=10,w=550,y=5,h=790}"
local viewport = os.getenv("EMULATE_READER_VIEWPORT")
if viewport then
self.viewport = require("ui/geometry"):new(loadstring("return " .. viewport)())
end
if util.haveSDL2() then
self.screen = require("ffi/framebuffer_SDL2_0"):new{device = self}
self.input = require("device/input"):new{