src/Painter.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *          Copyright 1998-2001 The LyX Team
   7  *
   8  *======================================================*/
   9
  10 #include <config.h>
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 #include "Painter.h"
  17 #include "LString.h"
  18 #include "debug.h"
  19 #include "lyxfont.h"
  20 #include "WorkArea.h"
  21 #include "font.h"
  22 #include "ColorHandler.h"
  23 #include "lyxrc.h"
  24 #include "encoding.h"
  25 #include "language.h"
  26
  27 #include "frontends/GUIRunTime.h"
  28 #include "graphics/GraphicsImage.h"
  29
  30 #include "support/LAssert.h"
  31 #include "support/lstrings.h"
  32
  33 #include <boost/smart_ptr.hpp>
  34
  35 #include <cmath>
  36
  37
  38 using std::endl;
  39 using std::max;
  40
  41 namespace {
  42
  43 inline
  44 Display * display()
  45 {
  46         return GUIRunTime::x11Display();
  47 }
  48
  49 }
  50
  51
  52 Painter::Painter(WorkArea & wa)
  53         : PainterBase(wa)
  54 {}
  55
  56
  57 // Basic drawing routines
  58
  59 PainterBase & Painter::point(int x, int y, LColor::color c)
  60 {
  61         XDrawPoint(display(), owner.getPixmap(),
  62                    lyxColorHandler->getGCForeground(c), x, y);
  63         return *this;
  64 }
  65
  66
  67 PainterBase & Painter::line(int x1, int y1, int x2, int y2,
  68                             LColor::color col,
  69                             enum line_style ls,
  70                             enum line_width lw)
  71 {
  72         XDrawLine(display(), owner.getPixmap(),
  73                   lyxColorHandler->getGCLinepars(ls, lw, col),
  74                   x1, y1, x2, y2);
  75         return *this;
  76 }
  77
  78
  79 PainterBase & Painter::lines(int const * xp, int const * yp, int np,
  80                              LColor::color col,
  81                              enum line_style ls,
  82                              enum line_width lw)
  83 {
  84         boost::scoped_array<XPoint> points(new XPoint[np]);
  85
  86         for (int i = 0; i < np; ++i) {
  87                 points[i].x = xp[i];
  88                 points[i].y = yp[i];
  89         }
  90
  91         XDrawLines(display(), owner.getPixmap(),
  92                    lyxColorHandler->getGCLinepars(ls, lw, col),
  93                    points.get(), np, CoordModeOrigin);
  94
  95         return *this;
  96 }
  97
  98
  99 PainterBase & Painter::rectangle(int x, int y, int w, int h,
 100                                  LColor::color col,
 101                                  enum line_style ls,
 102                                  enum line_width lw)
 103 {
 104         XDrawRectangle(display(), owner.getPixmap(),
 105                        lyxColorHandler->getGCLinepars(ls, lw, col),
 106                        x, y, w, h);
 107         return *this;
 108 }
 109
 110
 111 PainterBase & Painter::fillRectangle(int x, int y, int w, int h,
 112                                      LColor::color col)
 113 {
 114         XFillRectangle(display(), owner.getPixmap(),
 115                        lyxColorHandler->getGCForeground(col), x, y, w, h);
 116         return *this;
 117 }
 118
 119
 120 PainterBase & Painter::fillPolygon(int const * xp, int const * yp, int np,
 121                                    LColor::color col)
 122 {
 123         boost::scoped_array<XPoint> points(new XPoint[np]);
 124
 125         for (int i = 0; i < np; ++i) {
 126                 points[i].x = xp[i];
 127                 points[i].y = yp[i];
 128         }
 129
 130         XFillPolygon(display(), owner.getPixmap(),
 131                      lyxColorHandler->getGCForeground(col), points.get(), np,
 132                      Nonconvex, CoordModeOrigin);
 133
 134         return *this;
 135 }
 136
 137
 138 PainterBase & Painter::arc(int x, int y,
 139                            unsigned int w, unsigned int h,
 140                            int a1, int a2, LColor::color col)
 141 {
 142         XDrawArc(display(), owner.getPixmap(),
 143                  lyxColorHandler->getGCForeground(col),
 144                  x, y, w, h, a1, a2);
 145         return *this;
 146 }
 147
 148
 149 /// Draw lines from x1,y1 to x2,y2. They are arrays
 150 PainterBase & Painter::segments(int const * x1, int const * y1,
 151                                 int const * x2, int const * y2, int ns,
 152                                 LColor::color col,
 153                                 enum line_style ls, enum line_width lw)
 154 {
 155         boost::scoped_array<XSegment> s(new XSegment[ns]);
 156
 157         for (int i = 0; i < ns; ++i) {
 158                 s[i].x1 = x1[i];
 159                 s[i].y1 = y1[i];
 160                 s[i].x2 = x2[i];
 161                 s[i].y2 = y2[i];
 162         }
 163         XDrawSegments(display(), owner.getPixmap(),
 164                       lyxColorHandler->getGCLinepars(ls, lw, col),
 165                       s.get(), ns);
 166
 167         return *this;
 168 }
 169
 170
 171 PainterBase & Painter::image(int x, int y, int w, int h,
 172                              grfx::GImage const & image)
 173 {
 174         XGCValues val;
 175         val.function = GXcopy;
 176         GC gc = XCreateGC(display(), owner.getPixmap(),
 177                           GCFunction, &val);
 178         XCopyArea(display(), image.getPixmap(), owner.getPixmap(), gc,
 179                   0, 0, w, h, x, y);
 180         XFreeGC(display(), gc);
 181         return *this;
 182 }
 183
 184
 185 PainterBase & Painter::text(int x, int y, string const & s, LyXFont const & f)
 186 {
 187         return text(x, y, s.data(), s.length(), f);
 188 }
 189
 190
 191 PainterBase & Painter::text(int x, int y, char c, LyXFont const & f)
 192 {
 193         char s[2] = { c, '\0' };
 194         return text(x, y, s, 1, f);
 195 }
 196
 197
 198 PainterBase & Painter::text(int x, int y, char const * s, size_t ls,
 199                             LyXFont const & f)
 200 {
 201         if (lyxrc.font_norm_type == LyXRC::ISO_10646_1) {
 202                 boost::scoped_array<XChar2b> xs(new XChar2b[ls]);
 203                 Encoding const * encoding = f.language()->encoding();
 204                 LyXFont font(f);
 205                 if (f.isSymbolFont()) {
 206 #ifdef USE_UNICODE_FOR_SYMBOLS
 207                         font.setFamily(LyXFont::ROMAN_FAMILY);
 208                         font.setShape(LyXFont::UP_SHAPE);
 209 #endif
 210                         encoding = encodings.symbol_encoding();
 211                 }
 212                 for (size_t i = 0; i < ls; ++i) {
 213                         Uchar c = encoding->ucs(s[i]);
 214                         xs[i].byte1 = c >> 8;
 215                         xs[i].byte2 = c & 0xff;
 216                 }
 217                 text(x , y, xs.get(), ls, font);
 218                 return *this;
 219         }
 220
 221         GC gc = lyxColorHandler->getGCForeground(f.realColor());
 222         if (f.realShape() != LyXFont::SMALLCAPS_SHAPE) {
 223                 lyxfont::XSetFont(display(), gc, f);
 224                 XDrawString(display(), owner.getPixmap(), gc, x, y, s, ls);
 225         } else {
 226                 LyXFont smallfont(f);
 227                 smallfont.decSize().decSize().setShape(LyXFont::UP_SHAPE);
 228                 int tmpx = x;
 229                 for (size_t i = 0; i < ls; ++i) {
 230                         char const c = uppercase(s[i]);
 231                         if (c != s[i]) {
 232                                 lyxfont::XSetFont(display(), gc, smallfont);
 233                                 XDrawString(display(), owner.getPixmap(), gc,
 234                                             tmpx, y, &c, 1);
 235                                 tmpx += lyxfont::XTextWidth(smallfont, &c, 1);
 236                         } else {
 237                                 lyxfont::XSetFont(display(), gc, f);
 238                                 XDrawString(display(), owner.getPixmap(), gc,
 239                                             tmpx, y, &c, 1);
 240                                 tmpx += lyxfont::XTextWidth(f, &c, 1);
 241                         }
 242                 }
 243         }
 244
 245         if (f.underbar() == LyXFont::ON) {
 246                 underline(f, x, y, lyxfont::width(s, ls, f));
 247         }
 248
 249         return *this;
 250 }
 251
 252
 253 PainterBase & Painter::text(int x, int y, XChar2b const * s, int ls,
 254                             LyXFont const & f)
 255 {
 256         GC gc = lyxColorHandler->getGCForeground(f.realColor());
 257         if (f.realShape() != LyXFont::SMALLCAPS_SHAPE) {
 258                 lyxfont::XSetFont(display(), gc, f);
 259                 XDrawString16(display(), owner.getPixmap(), gc, x, y, s, ls);
 260         } else {
 261                 LyXFont smallfont(f);
 262                 smallfont.decSize().decSize().setShape(LyXFont::UP_SHAPE);
 263                 static XChar2b c;
 264                 int tmpx = x;
 265                 for (int i = 0; i < ls; ++i) {
 266                         if (s[i].byte1)
 267                                 c = s[i];
 268                         else {
 269                                 c.byte1 = s[i].byte1;
 270                                 c.byte2 = uppercase(s[i].byte2);
 271                         }
 272                         if (c.byte2 != s[i].byte2) {
 273                                 lyxfont::XSetFont(display(), gc, smallfont);
 274                                 XDrawString16(display(), owner.getPixmap(), gc,
 275                                               tmpx, y, &c, 1);
 276                                 tmpx += lyxfont::XTextWidth16(smallfont, &c, 1);
 277                         } else {
 278                                 lyxfont::XSetFont(display(), gc, f);
 279                                 XDrawString16(display(), owner.getPixmap(), gc,
 280                                               tmpx, y, &c, 1);
 281                                 tmpx += lyxfont::XTextWidth16(f, &c, 1);
 282                         }
 283                 }
 284         }
 285
 286         if (f.underbar() == LyXFont::ON) {
 287                 underline(f, x, y, lyxfont::width(s, ls, f));
 288         }
 289
 290         return *this;
 291 }
 292
 293
 294 void Painter::underline(LyXFont const & f, int x, int y, int width)
 295 {
 296         int const below = max(lyxfont::maxDescent(f) / 2, 2);
 297         int const height = max((lyxfont::maxDescent(f) / 4) - 1, 1);
 298         if (height < 2)
 299                 line(x, y + below, x + width, y + below, f.color());
 300         else
 301                 fillRectangle(x, y + below, width, below + height,
 302                               f.color());
 303 }