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Tile-based rendering (partial page invalidation)

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saqib mir
2026-07-07 11:25:09 +05:30
parent ef59f2ec83
commit 880e56b98b
8 changed files with 152 additions and 8 deletions
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engine/include/pdfengine/pdf_document.hpp
+16 -1
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@@ -60,6 +60,14 @@ struct DevicePoint {
int y;
};
struct InvalidatedRegion {
int pageIndex;
double x;
double y;
double width;
double height;
};
struct GlyphBounds {
std::string text;
double x;
@@ -172,6 +180,12 @@ public:
return std::unexpected(EngineError::Unknown);
}
[[nodiscard]] virtual std::expected<PageImage, EngineError>
renderTile(int dpi, double xPt, double yPt, double wPt, double hPt) const {
(void)dpi; (void)xPt; (void)yPt; (void)wPt; (void)hPt;
return std::unexpected(EngineError::Unknown);
}
[[nodiscard]] virtual std::expected<std::string, EngineError> extractText() const = 0;
[[nodiscard]] virtual std::expected<std::vector<GlyphBounds>, EngineError> extractTextWithBounds() const = 0;
@@ -256,7 +270,8 @@ public:
[[nodiscard]] virtual std::expected<std::shared_ptr<fonts::pdf_fonts::Font>, std::string>
getResolvedFont(const FontInfo& fontInfo) = 0;
virtual std::expected<void, EngineError> applyEdits(const std::string& editsJson) = 0;
virtual std::expected<std::vector<InvalidatedRegion>, EngineError> applyEdits(const std::string& editsJson) = 0;
[[nodiscard]] virtual std::string lastReflowLayout() const { return {}; }