Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

TermControl: force all ambiguous glyphs to be narrow #2928

Merged
merged 1 commit into from
Oct 15, 2019
Merged

TermControl: force all ambiguous glyphs to be narrow #2928

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
25 changes: 20 additions & 5 deletions src/cascadia/TerminalControl/TermControl.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,25 @@ using namespace winrt::Microsoft::Terminal::Settings;

namespace winrt::Microsoft::Terminal::TerminalControl::implementation
{
// Helper static function to ensure that all ambiguous-width glyphs are reported as narrow.
// See microsoft/terminal#2066 for more info.
static bool _IsGlyphWideForceNarrowFallback(const std::wstring_view /* glyph */)
{
return false; // glyph is not wide.
}

static bool _EnsureStaticInitialization()
{
// use C++11 magic statics to make sure we only do this once.
static bool initialized = []() {
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

const?

// *** THIS IS A SINGLETON ***
SetGlyphWidthFallback(_IsGlyphWideForceNarrowFallback);

return true;
}();
return initialized;
}

TermControl::TermControl() :
TermControl(Settings::TerminalSettings{}, TerminalConnection::ITerminalConnection{ nullptr })
{
Expand All @@ -47,6 +66,7 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
_lastMouseClick{},
_lastMouseClickPos{}
{
_EnsureStaticInitialization();
_Create();
}

Expand Down Expand Up @@ -413,11 +433,6 @@ namespace winrt::Microsoft::Terminal::TerminalControl::implementation
auto dxEngine = std::make_unique<::Microsoft::Console::Render::DxEngine>();
_renderer->AddRenderEngine(dxEngine.get());

// Set up the renderer to be used to calculate the width of a glyph,
// should we be unable to figure out its width another way.
auto pfn = std::bind(&::Microsoft::Console::Render::Renderer::IsGlyphWideByFont, _renderer.get(), std::placeholders::_1);
SetGlyphWidthFallback(pfn);

// Initialize our font with the renderer
// We don't have to care about DPI. We'll get a change message immediately if it's not 96
// and react accordingly.
Expand Down