TT Redesign

[alex-jerechinsky]

Priority: Tasks that are required for Bitcoin only firmware

• pagination
  • Rust UI improvements and fixes #1960
  • Rust UI: loaders, hold to confirm, pagination for model T #1961
  • Rust UI: pagination for T1 #1993
• Improve messages returned from rust layouts #2118
• enable debuglink for new UI
• UI tests for Rust UI #2169
• fonts Implement new fonts #1122
• clean up timer handling: UI2: Global layout object #2299
• implement layouts
  • generic dialogs and confirmations
    • Rust UI: confirm_action layout for TT #2071
    • Rust UI: confirm_action spacing fixes #2097
    • Rust UI: Add dynamic place system #2155
  • New UI: implement bitcoin tx signing #2215
  • Rust UI: homescreen, lockscreen #2498
  • FIDO layouts FIDO layouts #2532
  • TT New UI: device setup + device backup #2298
  • Keyboards for seed restore #2142
    • Rust UI: Keyboards #2098
    • Rust UI: keyboards tweaks and fixes #2154
  • PIN/passphrase/recovery keyboard
    • Rust UI: PIN keyboard #2104
    • Rust UI: keyboards tweaks and fixes #2154
    • Rust UI: PIN correction + long PIN #2227
    • fix visual glitches caused by overlapping Maybes (needs Honza's placement code)
    • show wrong pin warning (needs ability to start timer on layout init)
    • long passphrases New UI: long passphrases #2499
    • Zero out memory of PIN/passphrase in the layout object #2530
    • funny button shape in PIN keyboard
  • Rust UI: confirm_properties layout #2519
  • altcoins TT redesign: special screens for altcoins #2500
• show_success cannot break long lines, we need to add support for center-aligned paragraphs (in Rust UI: device setup and recovery #2383)
• confirm_blob cannot directly render bytearray data, we currently hexlify it in python but encoding it on-the-fly would save some RAM #2531
• confirm_blob doesn't support ask_pagination yet (bitcoin doesn't need it)
• each icon (for IconDialog) takes 0.5K of flash, we need to either figure out how to represent three-color image more efficiently than 16bpp, or draw them procedurally
• unlocking and signing and verifying pin progress
• fix device tests to work with UI2, possibly combined with dropping python UI entirely

Post-switch:

• UI2: Implement Ethereum pagination actions #2631
• Add fee rate to UI2 design #2624 UI2: show fee rate in confirm_total #2643
• Improve UI2 debuglink output #2629
• Usage of newlines in firmware strings #2585
• UI2: improve string handling safety #2665
• Very long scrollbars on Model T #2670
• rename ui/layouts/tt_v2 to tt, merge and clean up class Layout + class RustLayout

Nice to have:

• switch to rust implementation of qrcodegen, this would make it possible to propagate errors to python which we currently don't do

[grdddj]

While getting rid of all UI1 stuff as a part of #2559, I noticed that ui.Component is being used in couple monero layouts, for example

trezor-firmware/core/src/apps/monero/layout.py

Lines 183 to 197 in ac6936d

	class TransactionStep(ui.Component):
	def __init__(self, state: State, info: list[str]) -> None:
	super().__init__()
	self.state = state
	self.info = info
	def on_render(self) -> None:
	state = self.state
	info = self.info
	ui.header("Signing transaction", ui.ICON_SEND, ui.TITLE_GREY, ui.BG, ui.BLUE)
	p = 1000 * state.progress_cur // state.progress_total
	ui.display.loader(p, False, -4, ui.WHITE, ui.BG)
	ui.display.text_center(ui.WIDTH // 2, 210, info[0], ui.NORMAL, ui.FG, ui.BG)
	if len(info) > 1:
	ui.display.text_center(ui.WIDTH // 2, 235, info[1], ui.NORMAL, ui.FG, ui.BG)

Could it be left as-is, or do we want to convert it into some Rust layout? It also uses Popup, so it is quite coupled with old UI

[matejcik]

the code above should be reworked completely, there is an issue #2217. I will write more in there.

[hynek-jina]

Generally done.. Remaining task has dedicated issues..