2 * \file MetricsInfo.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
8 * Full author contact details are available in file CREDITS.
13 #include "MetricsInfo.h"
17 #include "insets/Inset.h"
19 #include "mathed/MathSupport.h"
21 #include "frontends/FontMetrics.h"
22 #include "frontends/Painter.h"
31 /////////////////////////////////////////////////////////////////////////
35 /////////////////////////////////////////////////////////////////////////
37 MetricsBase::MetricsBase(BufferView * b, FontInfo f, int w)
38 : bv(b), font(std::move(f)), fontname("mathnormal"),
39 textwidth(w), macro_nesting(0),
40 solid_line_thickness_(1), solid_line_offset_(1), dotted_line_thickness_(1)
42 if (lyxrc.currentZoom >= 200) {
43 // derive the line thickness from zoom factor
44 // the zoom is given in percent
45 // (increase thickness at 250%, 450% etc.)
46 solid_line_thickness_ = (lyxrc.currentZoom + 150) / 200;
47 // adjust line_offset_ too
48 solid_line_offset_ = 1 + solid_line_thickness_ / 2;
50 if (lyxrc.currentZoom >= 100) {
51 // derive the line thickness from zoom factor
52 // the zoom is given in percent
53 // (increase thickness at 150%, 250% etc.)
54 dotted_line_thickness_ = (lyxrc.currentZoom + 50) / 100;
59 Changer MetricsBase::changeFontSet(string const & name)
61 RefChanger<MetricsBase> rc = make_save(*this);
62 ColorCode oldcolor = font.color();
63 string const oldname = fontname;
65 if (isMathFont(name) || isMathFont(oldname))
66 font = isTextFont(name) ? outer_font : sane_font;
67 augmentFont(font, name);
68 if (isTextFont(name) && isMathFont(oldname))
69 font.setSize(rc->old.outer_font.size());
71 font.setSize(rc->old.font.size());
72 font.setStyle(rc->old.font.style());
74 font.setColor(oldcolor);
75 if (rc->old.font.shape() != UP_SHAPE)
76 font.setShape(UP_SHAPE);
78 font.setShape(ITALIC_SHAPE);
79 } else if (name != "lyxtex"
80 && ((isTextFont(oldname) && oldcolor != Color_foreground)
81 || (isMathFont(oldname) && oldcolor != Color_math)))
82 font.setColor(oldcolor);
83 #if __cplusplus >= 201402L
86 /** In theory, this is not needed with C++11, and modern compilers
87 * will complain in C++11 mode, but gcc 4.9 requires this. */
93 Changer MetricsBase::changeFontSize(string const & size, bool mathmode)
95 map<string, FontSize> sizes = {
97 {"scriptsize", SCRIPT_SIZE},
98 {"footnotesize", FOOTNOTE_SIZE},
99 {"small", SMALL_SIZE},
100 {"normalsize", NORMAL_SIZE},
101 {"large", LARGE_SIZE},
102 {"Large", LARGER_SIZE},
103 {"LARGE", LARGEST_SIZE},
107 RefChanger<MetricsBase> rc = make_save(*this);
108 // In math mode we only record the size in outer_font
110 outer_font.setSize(sizes[size]);
112 font.setSize(sizes[size]);
117 Changer MetricsBase::changeEnsureMath(Inset::mode_type mode)
120 case Inset::UNDECIDED_MODE:
122 case Inset::TEXT_MODE:
123 return isMathFont(fontname) ? changeFontSet("textnormal") : noChange();
124 case Inset::MATH_MODE:
126 // \textit{\ensuremath{\text{a}}}
127 // should appear in italics
128 return isTextFont(fontname) ? changeFontSet("mathnormal"): noChange();
134 int MetricsBase::inPixels(Length const & len) const
137 if (len.unit() == Length::MU)
138 // mu is 1/18th of an em in the math symbol font
139 fi.setFamily(SYMBOL_FAMILY);
141 // Math style is only taken into account in the case of mu
142 fi.setStyle(TEXT_STYLE);
143 return len.inPixels(textwidth, theFontMetrics(fi).em());
147 /////////////////////////////////////////////////////////////////////////
151 /////////////////////////////////////////////////////////////////////////
153 MetricsInfo::MetricsInfo(BufferView * bv, FontInfo font, int textwidth,
154 MacroContext const & mc, bool vm, bool tight)
155 : base(bv, font, textwidth), macrocontext(mc), vmode(vm), tight_insets(tight),
160 /////////////////////////////////////////////////////////////////////////
164 /////////////////////////////////////////////////////////////////////////
166 PainterInfo::PainterInfo(BufferView * bv, lyx::frontend::Painter & painter)
167 : pain(painter), ltr_pos(false), change(),
168 selected(false), selected_left(false), selected_right(false),
169 do_spellcheck(true), full_repaint(true), background_color(Color_background),
176 void PainterInfo::draw(int x, int y, char_type c)
178 pain.text(x, y, c, base.font);
182 void PainterInfo::draw(int x, int y, docstring const & str)
184 pain.text(x, y, str, base.font);
188 ColorCode PainterInfo::backgroundColor(Inset const * inset, bool sel) const
191 // This inset is in a selection
192 return Color_selection;
194 // special handling for inset background
195 if (inset != nullptr) {
196 if (pain.develMode() && !inset->isBufferValid()) {
197 LYXERR0("Invalid or no buffer set in " << insetName(inset->lyxCode()));
198 // This inset is in error
202 ColorCode const color_bg = inset->backgroundColor(*this);
203 if (color_bg != Color_none)
204 // This inset has its own color
208 if (background_color == Color_none)
209 // This inset has no own color and does not inherit a color
210 return Color_background;
212 // This inset has no own color, but inherits a color
213 return background_color;
217 Color PainterInfo::textColor(Color const & color) const
219 if (change.changed())
220 return change.color();
222 return Color_selectiontext;
227 Changer MetricsBase::changeScript()
229 switch (font.style()) {
232 return font.changeStyle(SCRIPT_STYLE);
234 case SCRIPTSCRIPT_STYLE:
235 return font.changeStyle(SCRIPTSCRIPT_STYLE);
245 Changer MetricsBase::changeFrac()
247 switch (font.style()) {
249 return font.changeStyle(TEXT_STYLE);
251 return font.changeStyle(SCRIPT_STYLE);
253 case SCRIPTSCRIPT_STYLE:
254 return font.changeStyle(SCRIPTSCRIPT_STYLE);
264 Changer MetricsBase::changeArray(bool small)
267 return font.changeStyle(SCRIPT_STYLE);
268 return (font.style() == DISPLAY_STYLE) ? font.changeStyle(TEXT_STYLE)