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Add font fallback

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Note: All the `First()` in the code are temperary workarounds to make it work and require refractoring
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ExMatics HydrogenC
2023-11-28 07:17:46 +08:00
parent b3a18883ca
commit 47a25c7828
47 changed files with 787 additions and 87 deletions
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Source/Engine/Render2D/Font.h
+35
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@@ -339,6 +339,15 @@ public:
/// <param name="outputLines">The output lines list.</param>
void ProcessText(const StringView& text, Array<FontLineCache>& outputLines, API_PARAM(Ref) const TextLayoutOptions& layout);
/// <summary>
/// Processes text to get cached lines for rendering.
/// </summary>
/// <param name="fonts">The font list.</param>
/// <param name="text">The input text.</param>
/// <param name="layout">The layout properties.</param>
/// <param name="outputLines">The output lines list.</param>
static void ProcessText(const Array<Font*>& fonts, const StringView& text, Array<FontLineCache>& outputLines, API_PARAM(Ref) const TextLayoutOptions& layout);
/// <summary>
/// Processes text to get cached lines for rendering.
/// </summary>
@@ -395,6 +404,15 @@ public:
/// <returns>The minimum size for that text and fot to render properly.</returns>
API_FUNCTION() Float2 MeasureText(const StringView& text, API_PARAM(Ref) const TextLayoutOptions& layout);
/// <summary>
/// Measures minimum size of the rectangle that will be needed to draw given text.
/// </summary>
/// <param name="fonts">The fonts to render with.</param>
/// <param name="text">The input text to test.</param>
/// <param name="layout">The layout properties.</param>
/// <returns>The minimum size for that text and fot to render properly.</returns>
API_FUNCTION() static Float2 MeasureText(const Array<Font*>& fonts, const StringView& text, API_PARAM(Ref) const TextLayoutOptions& layout);
/// <summary>
/// Measures minimum size of the rectangle that will be needed to draw given text.
/// </summary>
@@ -482,6 +500,16 @@ public:
/// <returns>The character position (upper left corner which can be used for a caret position).</returns>
API_FUNCTION() Float2 GetCharPosition(const StringView& text, int32 index, API_PARAM(Ref) const TextLayoutOptions& layout);
/// <summary>
/// Calculates character position for given text and character index.
/// </summary>
/// <param name="fonts">The fonts to use.</param>
/// <param name="text">The input text to test.</param>
/// <param name="index">The text position to get coordinates of.</param>
/// <param name="layout">The text layout properties.</param>
/// <returns>The character position (upper left corner which can be used for a caret position).</returns>
API_FUNCTION() static Float2 GetCharPosition(const Array<Font*>& fonts, const StringView& text, int32 index, API_PARAM(Ref) const TextLayoutOptions& layout);
/// <summary>
/// Calculates character position for given text and character index.
/// </summary>
@@ -518,6 +546,13 @@ public:
return GetCharPosition(textRange.Substring(text), index, TextLayoutOptions());
}
/// <summary>
/// Check if the font contains the glyph of a char
/// </summary>
/// <param name="c">The char to test.</param>
/// <returns>True if the font contains the glyph of the char, otherwise false.</returns>
API_FUNCTION() FORCE_INLINE bool ContainsChar(Char c);
/// <summary>
/// Flushes the size of the face with the Free Type library backend.
/// </summary>