Add Inter font, map Chicago system symbol reservations using it, use Command symbol on macOS

PortabilityLayer/CompositeRenderedFont.cpp

@@ -0,0 +1,64 @@
+#include "CompositeRenderedFont.h"
+#include "GpRenderedFontMetrics.h"
+#include "GpRenderedGlyphMetrics.h"
+
+#include <assert.h>
+
+PortabilityLayer::CompositeRenderedFont::CompositeRenderedFont(RenderedFont *rfont, RenderedFont *fallbackFont)
+	: m_font(rfont)
+	, m_fallbackFont(fallbackFont)
+	, m_metrics(rfont->GetMetrics())
+{
+	assert(rfont->IsAntiAliased() == fallbackFont->IsAntiAliased());
+
+	const GpRenderedFontMetrics fallbackMetrics = fallbackFont->GetMetrics();
+
+	if (fallbackMetrics.m_ascent > m_metrics.m_ascent)
+		m_metrics.m_ascent = fallbackMetrics.m_ascent;
+
+	if (fallbackMetrics.m_descent < m_metrics.m_descent)
+		m_metrics.m_descent = fallbackMetrics.m_descent;
+
+	if (fallbackMetrics.m_linegap > m_metrics.m_linegap)
+		m_metrics.m_linegap = fallbackMetrics.m_linegap;
+}
+
+bool PortabilityLayer::CompositeRenderedFont::GetGlyph(unsigned int character, const GpRenderedGlyphMetrics *&outMetricsPtr, const void *&outData) const
+{
+	if (m_font->GetGlyph(character, outMetricsPtr, outData))
+		return true;
+
+	return m_fallbackFont->GetGlyph(character, outMetricsPtr, outData);
+}
+
+const GpRenderedFontMetrics &PortabilityLayer::CompositeRenderedFont::GetMetrics() const
+{
+	return m_metrics;
+}
+
+size_t PortabilityLayer::CompositeRenderedFont::MeasureString(const uint8_t *chars, size_t len) const
+{
+	int32_t measure = 0;
+	for (size_t i = 0; i < len; i++)
+	{
+		const uint8_t character = chars[i];
+		const GpRenderedGlyphMetrics *metrics = nullptr;
+		const void *data = nullptr;
+		if (m_font->GetGlyph(chars[i], metrics, data))
+			measure += metrics->m_advanceX;
+		else if (m_fallbackFont->GetGlyph(chars[i], metrics, data))
+			measure += metrics->m_advanceX;
+	}
+
+	return static_cast<size_t>(measure);
+}
+
+bool PortabilityLayer::CompositeRenderedFont::IsAntiAliased() const
+{
+	return m_font->IsAntiAliased();
+}
+
+void PortabilityLayer::CompositeRenderedFont::Destroy()
+{
+	assert(false);
+}