4 * This file is part of LyX, the document processor.
5 * Licence details can be found in the file COPYING.
9 * Full author contact details are available in file CREDITS.
16 #include "support/docstring.h"
23 namespace frontend { class Painter; }
26 /// Standard Sizes (mode styles)
40 // This is the part common to MetricsInfo and PainterInfo
47 MetricsBase(BufferView * bv, LyXFont const & font, int textwidth);
53 /// current math style (display/text/script/..)
55 /// name of current font - mathed specific
57 /// This is the width available in pixels
63 // This contains a MetricsBase and information that's only relevant during
64 // the first phase of the two-phase draw
71 MetricsInfo(BufferView * bv, LyXFont const & font, int textwidth);
79 // This contains a MetricsBase and information that's only relevant during
80 // the second phase of the two-phase draw
85 PainterInfo(BufferView * bv, frontend::Painter & pain);
87 void draw(int x, int y, char_type c);
89 void draw(int x, int y, docstring const & str);
94 frontend::Painter & pain;
95 /// Whether the text at this point is right-to-left (for InsetNewline)
97 /// Whether the parent is deleted (change tracking)
101 class TextMetricsInfo {};
103 class ViewMetricsInfo
107 : p1(0), p2(0), y1(0), y2(0), singlepar(false), size(0)
109 ViewMetricsInfo(pit_type p1, pit_type p2, int y1, int y2,
110 bool singlepar, pit_type size)
111 : p1(p1), p2(p2), y1(y1), y2(y2), singlepar(singlepar), size(size)
123 // Generic base for temporarily changing things.
124 // The original state gets restored when the Changer is destructed.
126 template <class Struct, class Temp = Struct>
130 Changer(Struct & orig) : orig_(orig) {}
140 // temporarily change some aspect of a font
141 class FontChanger : public Changer<LyXFont> {
144 FontChanger(LyXFont & orig, docstring const & font);
145 FontChanger(MetricsBase & mb, char const * const font);
151 // temporarily change a full font
152 class FontSetChanger : public Changer<MetricsBase> {
155 FontSetChanger(MetricsBase & mb, docstring const & font);
156 FontSetChanger(MetricsBase & mb, char const * const font);
162 // temporarily change the style
163 class StyleChanger : public Changer<MetricsBase> {
166 StyleChanger(MetricsBase & mb, Styles style);
172 // temporarily change the style to script style
173 class ScriptChanger : public StyleChanger {
176 ScriptChanger(MetricsBase & mb);
180 // temporarily change the style suitable for use in fractions
181 class FracChanger : public StyleChanger {
184 FracChanger(MetricsBase & mb);
188 // temporarily change the style suitable for use in tabulars and arrays
189 class ArrayChanger : public StyleChanger {
192 ArrayChanger(MetricsBase & mb);
197 // temporarily change the shape of a font
198 class ShapeChanger : public Changer<LyXFont, LyXFont::FONT_SHAPE> {
201 ShapeChanger(LyXFont & font, LyXFont::FONT_SHAPE shape);
207 // temporarily change the available text width
208 class WidthChanger : public Changer<MetricsBase>
212 WidthChanger(MetricsBase & mb, int width);
218 // temporarily change the used color
219 class ColorChanger : public Changer<LyXFont, std::string> {
222 ColorChanger(LyXFont & font, std::string const & color);