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