94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
#pragma once
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#include <XCEditor/Foundation/UIEditorTextMeasurement.h>
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#include <dwrite.h>
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#include <windows.h>
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#include <wrl/client.h>
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#include <cstdint>
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#include <string>
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#include <string_view>
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#include <unordered_map>
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#include <vector>
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namespace XCEngine::UI::Editor::Host {
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class D3D12UiTextSystem final : public ::XCEngine::UI::Editor::UIEditorTextMeasurer {
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public:
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struct RasterizedTextRun {
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std::vector<std::uint8_t> rgbaPixels = {};
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UINT width = 0u;
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UINT height = 0u;
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float offsetX = 0.0f;
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float offsetY = 0.0f;
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};
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struct ShapedGlyph {
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Microsoft::WRL::ComPtr<IDWriteFontFace> fontFace = {};
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std::uint16_t glyphIndex = 0u;
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float fontEmSize = 0.0f;
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float originX = 0.0f;
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float originY = 0.0f;
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DWRITE_MEASURING_MODE measuringMode = DWRITE_MEASURING_MODE_NATURAL;
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bool isSideways = false;
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};
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struct ShapedTextRun {
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std::vector<ShapedGlyph> glyphs = {};
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float width = 0.0f;
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float height = 0.0f;
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};
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struct RasterizedGlyph {
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std::vector<std::uint8_t> rgbaPixels = {};
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UINT width = 0u;
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UINT height = 0u;
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LONG boundsLeft = 0;
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LONG boundsTop = 0;
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LONG boundsRight = 0;
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LONG boundsBottom = 0;
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};
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bool Initialize();
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void Shutdown();
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void SetDpiScale(float dpiScale);
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float GetDpiScale() const;
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const std::string& GetLastError() const;
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float MeasureTextWidth(
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const ::XCEngine::UI::Editor::UIEditorTextMeasureRequest& request) const override;
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float MeasureTextAdvance(
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const ::XCEngine::UI::Editor::UIEditorTextMeasureRequest& request) const override;
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bool ShapeTextRun(
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std::string_view text,
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float fontSize,
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ShapedTextRun& outRun,
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std::string& outError) const;
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bool RasterizeGlyph(
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const ShapedGlyph& glyph,
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RasterizedGlyph& outGlyph,
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std::string& outError) const;
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bool RasterizeTextMask(
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std::string_view text,
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float fontSize,
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RasterizedTextRun& outRun,
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std::string& outError);
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private:
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IDWriteTextFormat* GetTextFormat(float fontSize) const;
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static std::wstring Utf8ToWide(std::string_view text);
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Microsoft::WRL::ComPtr<IDWriteFactory> m_dwriteFactory = {};
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mutable std::unordered_map<int, Microsoft::WRL::ComPtr<IDWriteTextFormat>> m_textFormats = {};
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float m_dpiScale = 1.0f;
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std::string m_lastError = {};
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};
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} // namespace XCEngine::UI::Editor::Host
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