4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
8 * \author Abdelrazak Younes
10 * Full author contact details are available in file CREDITS.
18 #include "frontends/Painter.h"
21 #include <QPainterPath>
33 * GuiPainter - a painter implementation for Qt
35 class GuiPainter : public QPainter, public Painter {
37 GuiPainter(QPaintDevice *, double pixel_ratio);
38 virtual ~GuiPainter();
40 /// draw a line from point to point
45 line_style ls = line_solid,
49 * lines - draw a set of lines
50 * @param xp array of points' x co-ords
51 * @param yp array of points' y co-ords
52 * @param np size of the points array
59 fill_style fs = fill_none,
60 line_style ls = line_solid,
64 * path - draw a path with bezier curves
65 * @param xp array of points' x co-ords
66 * @param yp array of points' y co-ords
67 * @param c1x array of first control points' x co-ords
68 * @param c1y array of first control points' y co-ords
69 * @param c2x array of second control points' x co-ords
70 * @param c2y array of second control points' y co-ords
71 * @param np size of the points array
73 virtual void path(int const * xp, int const * yp,
74 int const * c1x, int const * c1y,
75 int const * c2x, int const * c2y,
77 fill_style = fill_none, line_style = line_solid,
78 int line_width = thin_line);
81 virtual void rectangle(
85 line_style = line_solid,
88 /// draw a filled rectangle
89 virtual void fillRectangle(
97 unsigned int w, unsigned int h,
102 virtual void point(int x, int y, Color);
104 /// draw an image from the image cache
105 virtual void image(int x, int y, int w, int h,
106 lyx::graphics::Image const & image);
108 /// draw a string at position x, y (y is the baseline).
109 virtual void text(int x, int y, docstring const & str, FontInfo const & f);
111 /// draw a char at position x, y (y is the baseline)
112 virtual void text(int x, int y, char_type c, FontInfo const & f);
114 /** draw a string at position x, y (y is the baseline). The
115 * text direction is enforced by the \c Font.
117 virtual void text(int x, int y, docstring const & str, Font const & f,
118 double wordspacing, double textwidth);
120 /** draw a string at position x, y (y is the baseline), but
121 * make sure that the part between \c from and \c to is in
122 * \c other color. The text direction is enforced by the \c Font.
124 virtual void text(int x, int y, docstring const & str, Font const & f,
125 Color other, size_type from, size_type to,
126 double wordspacing, double textwidth);
129 virtual void textDecoration(FontInfo const & f, int x, int y, int width);
131 /// draw a string and enclose it inside a button frame
132 virtual void buttonText(int x, int baseline, docstring const & s,
133 FontInfo const & font, Color back, Color frame, int offset);
135 /// start monochrome painting mode, i.e. map every color into [min,max]
136 virtual void enterMonochromeMode(Color const & min,
138 /// leave monochrome painting mode
139 virtual void leaveMonochromeMode();
142 * Draw a string and enclose it inside a rectangle. If
143 * back color is specified, the background is cleared with
144 * the given color. If frame is specified, a thin frame is drawn
145 * around the text with the given color.
147 virtual void rectText(int x, int baseline, docstring const & str,
148 FontInfo const & font, Color back, Color frame);
150 /// draw a character of a preedit string for cjk support.
151 virtual int preeditText(int x, int y,
152 char_type c, FontInfo const & f, preedit_style style);
154 void wavyHorizontalLine(int x, int y, int width, ColorCode col);
157 /// check the font, and if set, draw an underline
158 void underline(FontInfo const & f,
159 int x, int y, int width, line_style ls = line_solid);
161 /// check the font, and if set, draw an dashed underline
162 void dashedUnderline(FontInfo const & f,
163 int x, int y, int width);
165 /// check the font, and if set, draw an strike-through line
166 void strikeoutLine(FontInfo const & f,
167 int x, int y, int width);
169 /// check the font, and if set, draw cross-through lines
170 void crossoutLines(FontInfo const & f,
171 int x, int y, int width);
173 /// check the font, and if set, draw double underline
174 void doubleUnderline(FontInfo const & f,
175 int x, int y, int width);
177 /// set pen parameters
178 void setQPainterPen(QColor const & col,
179 line_style ls = line_solid, int lw = thin_line);
181 // Direction for painting text
182 enum Direction { LtR, RtL, Auto };
184 // Helper for text() method
185 void do_drawText(int x, int y, QString str, Direction dir, FontInfo const & f, QFont ff);
187 // Real text() method
188 void text(int x, int y, docstring const & s,
189 FontInfo const & f, Direction const dir,
190 double const wordspacing, double tw);
192 QColor current_color_;
193 Painter::line_style current_ls_;
196 bool const use_pixmap_cache_;
198 std::stack<QColor> monochrome_min_;
200 std::stack<QColor> monochrome_max_;
201 /// convert into Qt color, possibly applying the monochrome mode
202 QColor computeColor(Color col);
203 /// possibly apply monochrome mode
204 QColor filterColor(QColor const & col);
206 QString generateStringSignature(QString const & str, FontInfo const & f,
210 } // namespace frontend
213 #endif // GUIPAINTER_H