evan
118e04e340
on_tick runs before draw in the same pass, so a screen built for a blocking call was never painted until the call returned -- on a panel ui.screen() had already cleared. Scanning looked like a hang on a blank screen. The notice is now painted by the tap itself and centered on both axes.
50 lines
1.7 KiB
Lua
50 lines
1.7 KiB
Lua
-- Run: lua test/settings_busy.lua
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-- The scan and keyboard screens announce themselves before work that blocks the loop for
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-- seconds. on_tick runs before draw in the same pass, so anything left for draw() to paint
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-- appears only after the blocking call returns -- on a panel ui.screen() has already
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-- cleared. These assert the announcement is painted by the tap itself.
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package.path = "sdcard/lib/?.lua;test/?.lua;" .. package.path
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local device = require("fake_device").install()
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dofile("sdcard/apps/settings/main.lua")
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local function tapRow(prefix)
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device.painted = {}
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draw()
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for _, item in ipairs(device.painted) do
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if item.label:sub(1, #prefix) == prefix then
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device.painted = {}
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on_touch_down(item.x + 2, item.y + 2)
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on_touch_up(item.x + 2, item.y + 2)
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return
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end
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end
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error("no row labelled '" .. prefix .. "'")
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end
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local function paintedLabel(prefix)
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for _, item in ipairs(device.painted) do
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if item.label:sub(1, #prefix) == prefix then return item end
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end
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return nil
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end
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init()
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tapRow("wifi")
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tapRow("scan networks")
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-- Painted by the tap, with no draw() in between.
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local busy = paintedLabel("scanning")
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assert(busy, "the scan screen paints its notice before scanning")
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local width = #busy.label * device.charWidth
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local centerX = busy.x + width / 2
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local centerY = busy.y + device.fontHeight / 2
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local panelW, panelH = gui.getWidth(), gui.getHeight()
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assert(math.abs(centerX - panelW / 2) <= 1, "centered horizontally, got x " .. busy.x)
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-- The bar is above the app's frame, so the app's own height is what it centers in.
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assert(math.abs(centerY - panelH / 2) <= 1, "centered vertically, got y " .. busy.y)
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print("ok")
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