+ virtual ~Painter() {}
+
+ /// draw a line from point to point
+ virtual void line(int x1, int y1, int x2, int y2, Color,
+ line_style = line_solid, int line_width = thin_line) = 0;
+
+ /**
+ * lines - draw a set of lines
+ * @param xp array of points' x co-ords
+ * @param yp array of points' y co-ords
+ * @param np size of the points array
+ */
+ virtual void lines(int const * xp, int const * yp, int np, Color,
+ fill_style = fill_none, line_style = line_solid,
+ int line_width = thin_line) = 0;
+
+ /**
+ * path - draw a path with bezier curves
+ * @param xp array of points' x co-ords
+ * @param yp array of points' y co-ords
+ * @param c1x array of first control points' x co-ords
+ * @param c1y array of first control points' y co-ords
+ * @param c2x array of second control points' x co-ords
+ * @param c2y array of second control points' y co-ords
+ * @param np size of the points array
+ */
+ virtual void path(int const * xp, int const * yp,
+ int const * c1x, int const * c1y,
+ int const * c2x, int const * c2y,
+ int np, Color,
+ fill_style = fill_none, line_style = line_solid,
+ int line_width = thin_line) = 0;
+
+ /// draw a rectangle
+ virtual void rectangle(int x, int y, int w, int h, Color,
+ line_style = line_solid, int line_width = thin_line) = 0;
+
+ /// draw a filled rectangle
+ virtual void fillRectangle(int x, int y, int w, int h, Color) = 0;
+
+ /// draw an arc
+ virtual void arc(int x, int y, unsigned int w, unsigned int h,
+ int a1, int a2, Color) = 0;
+
+ /// draw a pixel
+ virtual void point(int x, int y, Color) = 0;
+
+ /// draw a filled rectangle with the shape of a 3D button
+ virtual void button(int x, int y, int w, int h, bool mouseHover) = 0;
+
+ /// draw an image from the image cache
+ virtual void image(int x, int y, int w, int h,
+ graphics::Image const & image) = 0;
+
+ /// draw a string at position x, y (y is the baseline).
+ virtual void text(int x, int y, docstring const & str, FontInfo const & f) = 0;
+
+ /// draw a char at position x, y (y is the baseline)
+ virtual void text(int x, int y, char_type c, FontInfo const & f) = 0;
+
+ /** draw a string at position x, y (y is the baseline). The
+ * text direction is enforced by the \c Font.
+ */
+ virtual void text(int x, int y, docstring const & str, Font const & f,
+ double wordspacing, double textwidth) = 0;
+
+ /** draw a string at position x, y (y is the baseline), but
+ * make sure that the part between \c from and \c to is in
+ * \c other color. The text direction is enforced by the \c Font.
+ */
+ virtual void text(int x, int y, docstring const & str, Font const & f,
+ Color other, size_type from, size_type to,
+ double wordspacing, double textwidth) = 0;
+
+ void setDrawingEnabled(bool drawing_enabled)
+ { drawing_enabled_ = drawing_enabled; }
+
+ /// Indicate wether real screen drawing shall be done or not.
+ bool isDrawingEnabled() const { return drawing_enabled_; }
+
+ double pixelRatio() const { return pixel_ratio_; }
+
+ /// draw the underbar, strikeout, uuline and uwave font attributes
+ virtual void textDecoration(FontInfo const & f, int x, int y, int width) = 0;
+
+ /**
+ * Draw a string and enclose it inside a rectangle. If
+ * back color is specified, the background is cleared with
+ * the given color. If frame is specified, a thin frame is drawn
+ * around the text with the given color.
+ */
+ virtual void rectText(int x, int baseline, docstring const & str,
+ FontInfo const & font, Color back, Color frame) = 0;
+
+ /// draw a string and enclose it inside a button frame
+ virtual void buttonText(int x, int baseline, docstring const & s,
+ FontInfo const & font, bool mouseHover) = 0;
+
+ /// draw a character of a preedit string for cjk support.
+ virtual int preeditText(int x, int y,
+ char_type c, FontInfo const & f, preedit_style style) = 0;
+
+ /// start monochrome painting mode, i.e. map every color into [min,max]
+ virtual void enterMonochromeMode(Color const & min,
+ Color const & max) = 0;
+ /// leave monochrome painting mode
+ virtual void leaveMonochromeMode() = 0;
+ /// draws a wavy line that can be used for underlining.
+ virtual void wavyHorizontalLine(int x, int y, int width, ColorCode col) = 0;
+private: