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Diffstat (limited to 'src/display/nr-style.h')
| -rw-r--r-- | src/display/nr-style.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/display/nr-style.h b/src/display/nr-style.h new file mode 100644 index 0000000..c3d889e --- /dev/null +++ b/src/display/nr-style.h @@ -0,0 +1,181 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/** + * @file + * Style information for rendering. + * Only used by classes DrawingShape and DrawingText + *//* + * Authors: + * Krzysztof Kosiński <tweenk.pl@gmail.com> + * + * Copyright (C) 2010 Authors + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#ifndef INKSCAPE_DISPLAY_NR_STYLE_H +#define INKSCAPE_DISPLAY_NR_STYLE_H + +#include <memory> +#include <array> +#include <cairo.h> +#include <2geom/rect.h> +#include "color.h" +#include "drawing-paintserver.h" +#include "initlock.h" + +class SPPaintServer; +class SPStyle; +class SPIPaint; + +namespace Inkscape { +class DrawingContext; +class DrawingPattern; +class RenderContext; + +struct CairoPatternFreer { void operator()(cairo_pattern_t *p) const { cairo_pattern_destroy(p); } }; +using CairoPatternUniqPtr = std::unique_ptr<cairo_pattern_t, CairoPatternFreer>; +inline CairoPatternUniqPtr copy(CairoPatternUniqPtr const &p) +{ + if (!p) return {}; + cairo_pattern_reference(p.get()); + return CairoPatternUniqPtr(p.get()); +} + +struct NRStyleData +{ + NRStyleData(); + explicit NRStyleData(SPStyle const *style, SPStyle const *context_style = nullptr); + + enum class PaintType + { + NONE, + COLOR, + SERVER + }; + + struct Paint + { + PaintType type = PaintType::NONE; + SPColor color = 0; + std::unique_ptr<DrawingPaintServer> server; + float opacity = 1.0; + + void clear(); + void set(SPColor const &c); + void set(SPPaintServer *ps); + void set(SPIPaint const *paint); + bool ditherable() const; + }; + + Paint fill; + Paint stroke; + float stroke_width; + bool hairline; + float miter_limit; + int n_dash; + std::vector<double> dash; + float dash_offset; + cairo_fill_rule_t fill_rule; + cairo_line_cap_t line_cap; + cairo_line_join_t line_join; + + enum PaintOrderType + { + PAINT_ORDER_NORMAL, + PAINT_ORDER_FILL, + PAINT_ORDER_STROKE, + PAINT_ORDER_MARKER + }; + + std::array<PaintOrderType, 3> paint_order_layer; + + enum TextDecorationLine + { + TEXT_DECORATION_LINE_CLEAR = 0x00, + TEXT_DECORATION_LINE_SET = 0x01, + TEXT_DECORATION_LINE_INHERIT = 0x02, + TEXT_DECORATION_LINE_UNDERLINE = 0x04, + TEXT_DECORATION_LINE_OVERLINE = 0x08, + TEXT_DECORATION_LINE_LINETHROUGH = 0x10, + TEXT_DECORATION_LINE_BLINK = 0x20 + }; + + enum TextDecorationStyle + { + TEXT_DECORATION_STYLE_CLEAR = 0x00, + TEXT_DECORATION_STYLE_SET = 0x01, + TEXT_DECORATION_STYLE_INHERIT = 0x02, + TEXT_DECORATION_STYLE_SOLID = 0x04, + TEXT_DECORATION_STYLE_ISDOUBLE = 0x08, + TEXT_DECORATION_STYLE_DOTTED = 0x10, + TEXT_DECORATION_STYLE_DASHED = 0x20, + TEXT_DECORATION_STYLE_WAVY = 0x40 + }; + + int text_decoration_line; + int text_decoration_style; + Paint text_decoration_fill; + Paint text_decoration_stroke; + float text_decoration_stroke_width; + + // These are the same as in style.h + float phase_length; + bool tspan_line_start; + bool tspan_line_end; + float tspan_width; + float ascender; + float descender; + float underline_thickness; + float underline_position; + float line_through_thickness; + float line_through_position; + float font_size; + + int text_direction; +}; + +class NRStyle +{ +public: + void set(NRStyleData &&data); + CairoPatternUniqPtr prepareFill(DrawingContext &dc, RenderContext &rc, Geom::IntRect const &area, Geom::OptRect const &paintbox, DrawingPattern const *pattern) const; + CairoPatternUniqPtr prepareStroke(DrawingContext &dc, RenderContext &rc, Geom::IntRect const &area, Geom::OptRect const &paintbox, DrawingPattern const *pattern) const; + CairoPatternUniqPtr prepareTextDecorationFill(DrawingContext &dc, RenderContext &rc, Geom::IntRect const &area, Geom::OptRect const &paintbox, DrawingPattern const *pattern) const; + CairoPatternUniqPtr prepareTextDecorationStroke(DrawingContext &dc, RenderContext &rc, Geom::IntRect const &area, Geom::OptRect const &paintbox, DrawingPattern const *pattern) const; + void applyFill(DrawingContext &dc, CairoPatternUniqPtr const &cp) const; + void applyStroke(DrawingContext &dc, CairoPatternUniqPtr const &cp) const; + void applyTextDecorationFill(DrawingContext &dc, CairoPatternUniqPtr const &cp) const; + void applyTextDecorationStroke(DrawingContext &dc, CairoPatternUniqPtr const &cp) const; + void invalidate(); + + NRStyleData data; + +private: + struct CachedPattern + { + InitLock inited; + mutable CairoPatternUniqPtr pattern; + void reset() { inited.reset(); pattern.reset(); } + }; + + CairoPatternUniqPtr preparePaint(DrawingContext &dc, RenderContext &rc, Geom::IntRect const &area, Geom::OptRect const &paintbox, DrawingPattern const *pattern, NRStyleData::Paint const &paint, CachedPattern const &cp) const; + + CachedPattern fill_pattern; + CachedPattern stroke_pattern; + CachedPattern text_decoration_fill_pattern; + CachedPattern text_decoration_stroke_pattern; +}; + +} // namespace Inkscape + +#endif // INKSCAPE_DISPLAY_NR_STYLE_H + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |