terminal/src/host/renderFontDefaults.hpp
Dustin L. Howett b664761c79 Allow FontInfo{,Base,Desired} to store a font name > 32 wch (#3107)
We now truncate the font name as it goes out to GDI APIs, in console API
servicing, and in the propsheet.

I attempted to defer truncating the font to as far up the stack as
possible, so as to make FontInfo usable for the broadest set of cases.

There were a couple questions that came up: I know that `Settings` gets
memset (memsat?) by the registry deserializer, and perhaps that's
another place for us to tackle. Right now, this pull request enables
fonts whose names are >= 32 characters _in Windows Terminal only_, but
the underpinnings are there for conhost as well. We'd need to explicitly
break at the API, or perhaps return a failure or log something to
telemetry.

* Should we log truncation at the API boundary to telemetry?
-> Later; followup filed (#3123)

* Should we fix Settings here, or later?
-> Later; followup filed (#3123)

* `TrueTypeFontList` is built out of things in winconp, the private
console header. Concern about interop structures.
-> Not used for interop, followup filed to clean it up (#3123)

* Is `unsigned int` right for codepage? For width?
-> Yes: codepage became UINT (from WORD) when we moved from Win16 to
Win32

This commit also includes a workaround for #3170. Growing
CONSOLE_INFORMATION made us lose the struct layout lottery during
release builds, and this was an expedient fix.

Closes #602.
Related to #3123.
2019-10-14 21:23:45 -07:00

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C++

/*++
Copyright (c) Microsoft Corporation
Licensed under the MIT license.
Module Name:
- renderFontDefaults.hpp
Abstract:
- This provides the implementation of the interface that abstracts the lookup of default fonts from the actual rendering engine.
Author(s):
- Michael Niksa (miniksa) Mar 2016
--*/
#pragma once
#include "..\renderer\inc\IFontDefaultList.hpp"
class RenderFontDefaults sealed : public Microsoft::Console::Render::IFontDefaultList
{
public:
RenderFontDefaults();
~RenderFontDefaults();
[[nodiscard]] HRESULT RetrieveDefaultFontNameForCodepage(const unsigned int codePage,
std::wstring& outFaceName);
};