PangoRenderer

struct PangoRendererClass {
  void (* draw_glyphs) (
    PangoRenderer* renderer,
    PangoFont* font,
    PangoGlyphString* glyphs,
    int x,
    int y
  );
  void (* draw_rectangle) (
    PangoRenderer* renderer,
    PangoRenderPart part,
    int x,
    int y,
    int width,
    int height
  );
  void (* draw_error_underline) (
    PangoRenderer* renderer,
    int x,
    int y,
    int width,
    int height
  );
  void (* draw_shape) (
    PangoRenderer* renderer,
    PangoAttrShape* attr,
    int x,
    int y
  );
  void (* draw_trapezoid) (
    PangoRenderer* renderer,
    PangoRenderPart part,
    double y1_,
    double x11,
    double x21,
    double y2,
    double x12,
    double x22
  );
  void (* draw_glyph) (
    PangoRenderer* renderer,
    PangoFont* font,
    PangoGlyph glyph,
    double x,
    double y
  );
  void (* part_changed) (
    PangoRenderer* renderer,
    PangoRenderPart part
  );
  void (* begin) (
    PangoRenderer* renderer
  );
  void (* end) (
    PangoRenderer* renderer
  );
  void (* prepare_run) (
    PangoRenderer* renderer,
    PangoLayoutRun* run
  );
  void (* draw_glyph_item) (
    PangoRenderer* renderer,
    const char* text,
    PangoGlyphItem* glyph_item,
    int x,
    int y
  );
  void (* _pango_reserved2) (
void
  );
  void (* _pango_reserved3) (
void
  );
  void (* _pango_reserved4) (
void
  );
  
}

Class structure for PangoRenderer.

The following vfuncs take user space coordinates in Pango units and have default implementations: - draw_glyphs - draw_rectangle - draw_error_underline - draw_shape - draw_glyph_item

The default draw_shape implementation draws nothing.

The following vfuncs take device space coordinates as doubles and must be implemented: - draw_trapezoid - draw_glyph.

Class members

draw_glyphs: void (* draw_glyphs) ( PangoRenderer* renderer, PangoFont* font, PangoGlyphString* glyphs, int x, int y )

Draws a PangoGlyphString.

draw_rectangle: void (* draw_rectangle) ( PangoRenderer* renderer, PangoRenderPart part, int x, int y, int width, int height )

Draws a rectangle.

draw_error_underline: void (* draw_error_underline) ( PangoRenderer* renderer, int x, int y, int width, int height )

Draws a squiggly line that approximately covers the given rectangle in the style of an underline used to indicate a spelling error.

draw_shape: void (* draw_shape) ( PangoRenderer* renderer, PangoAttrShape* attr, int x, int y )

Draw content for a glyph shaped with PangoAttrShape x, y are the coordinates of the left edge of the baseline, in user coordinates.

draw_trapezoid: void (* draw_trapezoid) ( PangoRenderer* renderer, PangoRenderPart part, double y1_, double x11, double x21, double y2, double x12, double x22 )

Draws a trapezoidal filled area.

draw_glyph: void (* draw_glyph) ( PangoRenderer* renderer, PangoFont* font, PangoGlyph glyph, double x, double y )

Draws a single glyph.

part_changed: void (* part_changed) ( PangoRenderer* renderer, PangoRenderPart part )

Do renderer specific processing when rendering attributes change.

begin: void (* begin) ( PangoRenderer* renderer )

Do renderer-specific initialization before drawing.

end: void (* end) ( PangoRenderer* renderer )

Do renderer-specific cleanup after drawing.

prepare_run: void (* prepare_run) ( PangoRenderer* renderer, PangoLayoutRun* run )

Updates the renderer for a new run.

draw_glyph_item: void (* draw_glyph_item) ( PangoRenderer* renderer, const char* text, PangoGlyphItem* glyph_item, int x, int y )

Draws a PangoGlyphItem.

_pango_reserved2: void (* _pango_reserved2) ( void )

No description available.

_pango_reserved3: void (* _pango_reserved3) ( void )

No description available.

_pango_reserved4: void (* _pango_reserved4) ( void )

No description available.