terminal/src/host/renderFontDefaults.cpp
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

31 lines
910 B
C++

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
#include "precomp.h"
#include "renderFontDefaults.hpp"
#pragma hdrstop
RenderFontDefaults::RenderFontDefaults()
{
LOG_IF_NTSTATUS_FAILED(TrueTypeFontList::s_Initialize());
}
RenderFontDefaults::~RenderFontDefaults()
{
LOG_IF_FAILED(TrueTypeFontList::s_Destroy());
}
[[nodiscard]] HRESULT RenderFontDefaults::RetrieveDefaultFontNameForCodepage(const unsigned int codePage,
std::wstring& outFaceName)
try
{
// GH#3123: Propagate font length changes up through Settings and propsheet
wchar_t faceName[LF_FACESIZE]{ 0 };
NTSTATUS status = TrueTypeFontList::s_SearchByCodePage(codePage, faceName, ARRAYSIZE(faceName));
outFaceName.assign(faceName);
return HRESULT_FROM_NT(status);
}
CATCH_RETURN();