Pileus Git - ~andy/gtk/blob - gdk/win32/gdkdrawable-win32.c

   1 /* GDK - The GIMP Drawing Kit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 /*
  21  * Modified by the GTK+ Team and others 1997-1999.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "config.h"
  28
  29 #include <math.h>
  30 #include <glib.h>
  31
  32 #ifndef G_PI
  33 #define G_PI 3.14159265358979323846
  34 #endif
  35
  36 #include "gdkinternals.h"
  37 #include "gdkprivate-win32.h"
  38
  39 static void gdk_win32_drawable_destroy   (GdkDrawable     *drawable);
  40
  41 static void gdk_win32_draw_rectangle (GdkDrawable    *drawable,
  42                                       GdkGC          *gc,
  43                                       gint            filled,
  44                                       gint            x,
  45                                       gint            y,
  46                                       gint            width,
  47                                       gint            height);
  48 static void gdk_win32_draw_arc       (GdkDrawable    *drawable,
  49                                       GdkGC          *gc,
  50                                       gint            filled,
  51                                       gint            x,
  52                                       gint            y,
  53                                       gint            width,
  54                                       gint            height,
  55                                       gint            angle1,
  56                                       gint            angle2);
  57 static void gdk_win32_draw_polygon   (GdkDrawable    *drawable,
  58                                       GdkGC          *gc,
  59                                       gint            filled,
  60                                       GdkPoint       *points,
  61                                       gint            npoints);
  62 static void gdk_win32_draw_text      (GdkDrawable    *drawable,
  63                                       GdkFont        *font,
  64                                       GdkGC          *gc,
  65                                       gint            x,
  66                                       gint            y,
  67                                       const gchar    *text,
  68                                       gint            text_length);
  69 static void gdk_win32_draw_text_wc   (GdkDrawable    *drawable,
  70                                       GdkFont        *font,
  71                                       GdkGC          *gc,
  72                                       gint            x,
  73                                       gint            y,
  74                                       const GdkWChar *text,
  75                                       gint            text_length);
  76 static void gdk_win32_draw_drawable  (GdkDrawable    *drawable,
  77                                       GdkGC          *gc,
  78                                       GdkPixmap      *src,
  79                                       gint            xsrc,
  80                                       gint            ysrc,
  81                                       gint            xdest,
  82                                       gint            ydest,
  83                                       gint            width,
  84                                       gint            height);
  85 static void gdk_win32_draw_points    (GdkDrawable    *drawable,
  86                                       GdkGC          *gc,
  87                                       GdkPoint       *points,
  88                                       gint            npoints);
  89 static void gdk_win32_draw_segments  (GdkDrawable    *drawable,
  90                                       GdkGC          *gc,
  91                                       GdkSegment     *segs,
  92                                       gint            nsegs);
  93 static void gdk_win32_draw_lines     (GdkDrawable    *drawable,
  94                                       GdkGC          *gc,
  95                                       GdkPoint       *points,
  96                                       gint            npoints);
  97
  98 GdkDrawableClass _gdk_win32_drawable_class = {
  99   gdk_win32_drawable_destroy,
 100   _gdk_win32_gc_new,
 101   gdk_win32_draw_rectangle,
 102   gdk_win32_draw_arc,
 103   gdk_win32_draw_polygon,
 104   gdk_win32_draw_text,
 105   gdk_win32_draw_text_wc,
 106   gdk_win32_draw_drawable,
 107   gdk_win32_draw_points,
 108   gdk_win32_draw_segments,
 109   gdk_win32_draw_lines
 110 };
 111
 112 /*****************************************************
 113  * Win32 specific implementations of generic functions *
 114  *****************************************************/
 115
 116 GdkColormap*
 117 gdk_drawable_get_colormap (GdkDrawable *drawable)
 118 {
 119   GdkDrawablePrivate *drawable_private;
 120
 121   g_return_val_if_fail (drawable != NULL, NULL);
 122   drawable_private = (GdkDrawablePrivate*) drawable;
 123
 124   if (!GDK_DRAWABLE_DESTROYED (drawable))
 125     {
 126       if (drawable_private->colormap == NULL)
 127         return gdk_colormap_get_system (); /* XXX ??? */
 128       else
 129         return drawable_private->colormap;
 130     }
 131
 132   return NULL;
 133 }
 134
 135 void
 136 gdk_drawable_set_colormap (GdkDrawable *drawable,
 137                            GdkColormap *colormap)
 138 {
 139   GdkDrawablePrivate *drawable_private;
 140   GdkColormapPrivateWin32 *colormap_private;
 141
 142   g_return_if_fail (drawable != NULL);
 143   g_return_if_fail (colormap != NULL);
 144
 145   drawable_private = (GdkDrawablePrivate *) drawable;
 146   colormap_private = (GdkColormapPrivateWin32 *) colormap;
 147
 148   if (!GDK_DRAWABLE_DESTROYED (drawable))
 149     {
 150       if (GDK_IS_WINDOW (drawable))
 151         {
 152           g_return_if_fail (colormap_private->base.visual !=
 153                             ((GdkColormapPrivate *) (drawable_private->colormap))->visual);
 154           /* XXX ??? */
 155           GDK_NOTE (MISC, g_print ("gdk_drawable_set_colormap: %#x %#x\n",
 156                                    GDK_DRAWABLE_XID (drawable),
 157                                    colormap_private->xcolormap));
 158         }
 159       if (drawable_private->colormap)
 160         gdk_colormap_unref (drawable_private->colormap);
 161       drawable_private->colormap = colormap;
 162       gdk_colormap_ref (drawable_private->colormap);
 163
 164       if (GDK_IS_WINDOW (drawable)
 165           && drawable_private->window_type != GDK_WINDOW_TOPLEVEL)
 166         gdk_window_add_colormap_windows (drawable);
 167     }
 168 }
 169
 170 /* Drawing
 171  */
 172 static void
 173 gdk_win32_drawable_destroy (GdkDrawable *drawable)
 174 {
 175
 176 }
 177
 178 static void
 179 gdk_win32_draw_rectangle (GdkDrawable *drawable,
 180                           GdkGC       *gc,
 181                           gint         filled,
 182                           gint         x,
 183                           gint         y,
 184                           gint         width,
 185                           gint         height)
 186 {
 187   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 188   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 189   HDC hdc;
 190   HGDIOBJ oldpen, oldbrush;
 191   HBRUSH hbr = NULL;
 192   POINT pts[4];
 193   gboolean ok = TRUE;
 194
 195   GDK_NOTE (MISC, g_print ("gdk_win32_draw_rectangle: %#x (%d) %s%dx%d@+%d+%d\n",
 196                            GDK_DRAWABLE_XID (drawable),
 197                            gc_private,
 198                            (filled ? "fill " : ""),
 199                            width, height, x, y));
 200
 201   hdc = gdk_gc_predraw (drawable, gc_private,
 202                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 203
 204 #if 0
 205   {
 206     HBRUSH hbr = GetCurrentObject (hdc, OBJ_BRUSH);
 207     HPEN hpen = GetCurrentObject (hdc, OBJ_PEN);
 208     LOGBRUSH lbr;
 209     LOGPEN lpen;
 210     GetObject (hbr, sizeof (lbr), &lbr);
 211     GetObject (hpen, sizeof (lpen), &lpen);
 212
 213     g_print ("current brush: style = %s, color = 0x%.08x\n",
 214              (lbr.lbStyle == BS_SOLID ? "SOLID" : "???"),
 215              lbr.lbColor);
 216     g_print ("current pen: style = %s, width = %d, color = 0x%.08x\n",
 217              (lpen.lopnStyle == PS_SOLID ? "SOLID" : "???"),
 218              lpen.lopnWidth,
 219              lpen.lopnColor);
 220   }
 221 #endif
 222
 223   if (gc_data->fill_style == GDK_OPAQUE_STIPPLED)
 224     {
 225       if (!BeginPath (hdc))
 226         WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
 227
 228       /* Win9x doesn't support Rectangle calls in a path,
 229        * thus use Polyline.
 230        */
 231
 232       pts[0].x = x;
 233       pts[0].y = y;
 234       pts[1].x = x + width + 1;
 235       pts[1].y = y;
 236       pts[2].x = x + width + 1;
 237       pts[2].y = y + height + 1;
 238       pts[3].x = x;
 239       pts[3].y = y + height + 1;
 240
 241       if (ok)
 242         MoveToEx (hdc, x, y, NULL);
 243
 244       if (ok && !Polyline (hdc, pts, 4))
 245         WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
 246
 247       if (ok && !CloseFigure (hdc))
 248         WIN32_GDI_FAILED ("CloseFigure"), ok = FALSE;
 249
 250       if (ok && !EndPath (hdc))
 251         WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
 252
 253       if (ok && !filled)
 254         if (!WidenPath (hdc))
 255           WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
 256
 257       if (ok && !FillPath (hdc))
 258         WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
 259
 260       if (hbr != NULL)
 261         if (!DeleteObject (hbr))
 262           WIN32_GDI_FAILED ("DeleteObject");
 263     }
 264   else
 265     {
 266       if (filled)
 267         oldpen = SelectObject (hdc, GetStockObject (NULL_PEN));
 268       else
 269         oldbrush = SelectObject (hdc, GetStockObject (HOLLOW_BRUSH));
 270
 271       if (!Rectangle (hdc, x, y, x+width+1, y+height+1))
 272         WIN32_GDI_FAILED ("Rectangle");
 273
 274       if (filled)
 275         SelectObject (hdc, oldpen);
 276       else
 277         SelectObject (hdc, oldbrush);
 278     }
 279
 280   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 281 }
 282
 283 static void
 284 gdk_win32_draw_arc (GdkDrawable *drawable,
 285                     GdkGC       *gc,
 286                     gint         filled,
 287                     gint         x,
 288                     gint         y,
 289                     gint         width,
 290                     gint         height,
 291                     gint         angle1,
 292                     gint         angle2)
 293 {
 294   GdkGCPrivate *gc_private;
 295   HDC hdc;
 296   int nXStartArc, nYStartArc, nXEndArc, nYEndArc;
 297
 298   gc_private = (GdkGCPrivate*) gc;
 299
 300   GDK_NOTE (MISC, g_print ("gdk_draw_arc: %#x  %d,%d,%d,%d  %d %d\n",
 301                            GDK_DRAWABLE_XID (drawable),
 302                            x, y, width, height, angle1, angle2));
 303
 304   if (width != 0 && height != 0 && angle2 != 0)
 305     {
 306       hdc = gdk_gc_predraw (drawable, gc_private,
 307                             GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 308
 309       if (angle2 >= 360*64)
 310         {
 311           nXStartArc = nYStartArc = nXEndArc = nYEndArc = 0;
 312         }
 313       else if (angle2 > 0)
 314         {
 315           /* The 100. is just an arbitrary value */
 316           nXStartArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
 317           nYStartArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
 318           nXEndArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
 319           nYEndArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
 320         }
 321       else
 322         {
 323           nXEndArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
 324           nYEndArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
 325           nXStartArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
 326           nYStartArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
 327         }
 328
 329       /* GDK_OPAQUE_STIPPLED arcs not implemented. */
 330
 331       if (filled)
 332         {
 333           GDK_NOTE (MISC, g_print ("...Pie(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
 334                                    x, y, x+width, y+height,
 335                                    nXStartArc, nYStartArc,
 336                                    nXEndArc, nYEndArc));
 337           if (!Pie (hdc, x, y, x+width, y+height,
 338                     nXStartArc, nYStartArc, nXEndArc, nYEndArc))
 339             WIN32_GDI_FAILED ("Pie");
 340         }
 341       else
 342         {
 343           GDK_NOTE (MISC, g_print ("...Arc(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
 344                                    x, y, x+width, y+height,
 345                                    nXStartArc, nYStartArc,
 346                                    nXEndArc, nYEndArc));
 347           if (!Arc (hdc, x, y, x+width, y+height,
 348                     nXStartArc, nYStartArc, nXEndArc, nYEndArc))
 349             WIN32_GDI_FAILED ("Arc");
 350         }
 351       gdk_gc_postdraw (drawable, gc_private,
 352                        GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 353     }
 354 }
 355
 356 static void
 357 gdk_win32_draw_polygon (GdkDrawable *drawable,
 358                         GdkGC       *gc,
 359                         gint         filled,
 360                         GdkPoint    *points,
 361                         gint         npoints)
 362 {
 363   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 364   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 365   HDC hdc;
 366   HBRUSH hbr = NULL;
 367   POINT *pts;
 368   gboolean ok = TRUE;
 369   int i;
 370
 371   GDK_NOTE (MISC, g_print ("gdk_win32_draw_polygon: %#x (%d) %d\n",
 372                            GDK_DRAWABLE_XID (drawable), gc_private,
 373                            npoints));
 374
 375   if (npoints < 2)
 376     return;
 377
 378   hdc = gdk_gc_predraw (drawable, gc_private,
 379                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 380   pts = g_new (POINT, npoints+1);
 381
 382   for (i = 0; i < npoints; i++)
 383     {
 384       pts[i].x = points[i].x;
 385       pts[i].y = points[i].y;
 386     }
 387
 388   if (gc_data->fill_style == GDK_OPAQUE_STIPPLED)
 389     {
 390       if (!BeginPath (hdc))
 391         WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
 392
 393       MoveToEx (hdc, points[0].x, points[0].y, NULL);
 394
 395       if (pts[0].x == pts[npoints-1].x && pts[0].y == pts[npoints-1].y)
 396         npoints--;
 397
 398       if (ok && !Polyline (hdc, pts, 4))
 399         WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
 400
 401       if (ok && !CloseFigure (hdc))
 402         WIN32_GDI_FAILED ("CloseFigure"), ok = FALSE;
 403
 404       if (ok && !EndPath (hdc))
 405         WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
 406
 407       if (ok && !filled)
 408         if (!WidenPath (hdc))
 409           WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
 410
 411       if (ok && !FillPath (hdc))
 412         WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
 413
 414       if (hbr != NULL)
 415         if (!DeleteObject (hbr))
 416           WIN32_GDI_FAILED ("DeleteObject");
 417     }
 418   else
 419     {
 420       if (points[0].x != points[npoints-1].x
 421           || points[0].y != points[npoints-1].y)
 422         {
 423           pts[npoints].x = points[0].x;
 424           pts[npoints].y = points[0].y;
 425           npoints++;
 426         }
 427
 428       if (filled)
 429         {
 430           if (!Polygon (hdc, pts, npoints))
 431             WIN32_GDI_FAILED ("Polygon");
 432         }
 433       else
 434         {
 435           if (!Polyline (hdc, pts, npoints))
 436             WIN32_GDI_FAILED ("Polyline");
 437         }
 438     }
 439   g_free (pts);
 440   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 441 }
 442
 443 typedef struct
 444 {
 445   gint x, y;
 446   HDC hdc;
 447 } gdk_draw_text_arg;
 448
 449 static void
 450 gdk_draw_text_handler (GdkWin32SingleFont *singlefont,
 451                        const wchar_t      *wcstr,
 452                        int                 wclen,
 453                        void               *arg)
 454 {
 455   HGDIOBJ oldfont;
 456   SIZE size;
 457   gdk_draw_text_arg *argp = (gdk_draw_text_arg *) arg;
 458
 459   if (!singlefont)
 460     return;
 461
 462   if ((oldfont = SelectObject (argp->hdc, singlefont->xfont)) == NULL)
 463     {
 464       WIN32_GDI_FAILED ("SelectObject");
 465       return;
 466     }
 467
 468   if (!TextOutW (argp->hdc, argp->x, argp->y, wcstr, wclen))
 469     WIN32_GDI_FAILED ("TextOutW");
 470   GetTextExtentPoint32W (argp->hdc, wcstr, wclen, &size);
 471   argp->x += size.cx;
 472
 473   SelectObject (argp->hdc, oldfont);
 474 }
 475
 476 static void
 477 gdk_win32_draw_text (GdkDrawable *drawable,
 478                      GdkFont     *font,
 479                      GdkGC       *gc,
 480                      gint         x,
 481                      gint         y,
 482                      const gchar *text,
 483                      gint         text_length)
 484 {
 485   GdkGCPrivate *gc_private;
 486   wchar_t *wcstr;
 487   gint wlen;
 488   gdk_draw_text_arg arg;
 489
 490
 491   if (GDK_DRAWABLE_DESTROYED (drawable))
 492     return;
 493
 494   if (text_length == 0)
 495     return;
 496
 497   g_assert (font->type == GDK_FONT_FONT || font->type == GDK_FONT_FONTSET);
 498
 499   gc_private = (GdkGCPrivate*) gc;
 500
 501   arg.x = x;
 502   arg.y = y;
 503   arg.hdc = gdk_gc_predraw (drawable, gc_private,
 504                             GDK_GC_FOREGROUND|GDK_GC_FONT);
 505
 506   GDK_NOTE (MISC, g_print ("gdk_draw_text: %#x (%d,%d) \"%.*s\" (len %d)\n",
 507                            GDK_DRAWABLE_XID (drawable),
 508                            x, y,
 509                            (text_length > 10 ? 10 : text_length),
 510                            text, text_length));
 511
 512   wcstr = g_new (wchar_t, text_length);
 513   if (text_length == 1)
 514     {
 515       /* For single characters, don't try to interpret as UTF-8. */
 516       wcstr[0] = (guchar) text[0];
 517       gdk_wchar_text_handle (font, wcstr, 1, gdk_draw_text_handler, &arg);
 518     }
 519   else
 520     {
 521       if ((wlen = gdk_nmbstowchar_ts (wcstr, text, text_length, text_length)) == -1)
 522         g_warning ("gdk_win32_draw_text: gdk_nmbstowchar_ts failed");
 523       else
 524         gdk_wchar_text_handle (font, wcstr, wlen, gdk_draw_text_handler, &arg);
 525     }
 526
 527   g_free (wcstr);
 528
 529   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_FONT);
 530 }
 531
 532 static void
 533 gdk_win32_draw_text_wc (GdkDrawable      *drawable,
 534                         GdkFont          *font,
 535                         GdkGC            *gc,
 536                         gint              x,
 537                         gint              y,
 538                         const GdkWChar *text,
 539                         gint              text_length)
 540 {
 541   GdkGCPrivate *gc_private;
 542   gint i, wlen;
 543   wchar_t *wcstr;
 544   gdk_draw_text_arg arg;
 545
 546
 547   if (GDK_DRAWABLE_DESTROYED (drawable))
 548     return;
 549
 550   if (text_length == 0)
 551     return;
 552
 553   g_assert (font->type == GDK_FONT_FONT || font->type == GDK_FONT_FONTSET);
 554
 555   gc_private = (GdkGCPrivate*) gc;
 556
 557   arg.x = x;
 558   arg.y = y;
 559   arg.hdc = gdk_gc_predraw (drawable, gc_private,
 560                             GDK_GC_FOREGROUND|GDK_GC_FONT);
 561
 562   GDK_NOTE (MISC, g_print ("gdk_draw_text_wc: %#x (%d,%d) len: %d\n",
 563                            GDK_DRAWABLE_XID (drawable),
 564                            x, y, text_length));
 565
 566   if (sizeof (wchar_t) != sizeof (GdkWChar))
 567     {
 568       wcstr = g_new (wchar_t, text_length);
 569       for (i = 0; i < text_length; i++)
 570         wcstr[i] = text[i];
 571     }
 572   else
 573     wcstr = (wchar_t *) text;
 574
 575   gdk_wchar_text_handle (font, wcstr, text_length,
 576                          gdk_draw_text_handler, &arg);
 577
 578   if (sizeof (wchar_t) != sizeof (GdkWChar))
 579     g_free (wcstr);
 580
 581   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_FONT);
 582 }
 583
 584 static void
 585 gdk_win32_draw_drawable (GdkDrawable *drawable,
 586                          GdkGC       *gc,
 587                          GdkPixmap   *src,
 588                          gint         xsrc,
 589                          gint         ysrc,
 590                          gint         xdest,
 591                          gint         ydest,
 592                          gint         width,
 593                          gint         height)
 594 {
 595   GdkDrawablePrivate *src_private;
 596   GdkGCPrivate *gc_private;
 597   HDC hdc;
 598   HDC srcdc;
 599   HGDIOBJ hgdiobj;
 600   HRGN src_rgn, draw_rgn, outside_rgn;
 601   RECT r;
 602
 603   src_private = (GdkDrawablePrivate*) src;
 604   gc_private = (GdkGCPrivate*) gc;
 605
 606   GDK_NOTE (MISC, g_print ("gdk_draw_pixmap: dest: %#x "
 607                            "src: %#x %dx%d@+%d+%d"
 608                            " dest: %#x @+%d+%d\n",
 609                            GDK_DRAWABLE_XID (drawable),
 610                            GDK_DRAWABLE_XID (src),
 611                            width, height, xsrc, ysrc,
 612                            GDK_DRAWABLE_XID (drawable), xdest, ydest));
 613
 614   hdc = gdk_gc_predraw (drawable, gc_private, 0);
 615
 616   src_rgn = CreateRectRgn (0, 0, src_private->width + 1, src_private->height + 1);
 617   draw_rgn = CreateRectRgn (xsrc, ysrc, xsrc + width + 1, ysrc + height + 1);
 618   SetRectEmpty (&r);
 619   outside_rgn = CreateRectRgnIndirect (&r);
 620
 621   if (GDK_DRAWABLE_TYPE (drawable) != GDK_DRAWABLE_PIXMAP)
 622     {
 623       /* If we are drawing on a window, calculate the region that is
 624        * outside the source pixmap, and invalidate that, causing it to
 625        * be cleared. XXX
 626        */
 627       if (CombineRgn (outside_rgn, draw_rgn, src_rgn, RGN_DIFF) != NULLREGION)
 628         {
 629           OffsetRgn (outside_rgn, xdest, ydest);
 630           GDK_NOTE (MISC, (GetRgnBox (outside_rgn, &r),
 631                            g_print ("...calling InvalidateRgn, "
 632                                     "bbox: %dx%d@+%d+%d\n",
 633                                     r.right - r.left - 1, r.bottom - r.top - 1,
 634                                     r.left, r.top)));
 635           InvalidateRgn (GDK_DRAWABLE_XID (drawable), outside_rgn, TRUE);
 636         }
 637     }
 638
 639 #if 1 /* Don't know if this is necessary  */
 640   if (CombineRgn (draw_rgn, draw_rgn, src_rgn, RGN_AND) == COMPLEXREGION)
 641     g_warning ("gdk_win32_draw_drawable: CombineRgn returned a COMPLEXREGION");
 642
 643   GetRgnBox (draw_rgn, &r);
 644   if (r.left != xsrc
 645       || r.top != ysrc
 646       || r.right != xsrc + width + 1
 647       || r.bottom != ysrc + height + 1)
 648     {
 649       xdest += r.left - xsrc;
 650       xsrc = r.left;
 651       ydest += r.top - ysrc;
 652       ysrc = r.top;
 653       width = r.right - xsrc - 1;
 654       height = r.bottom - ysrc - 1;
 655
 656       GDK_NOTE (MISC, g_print ("... restricted to src: %dx%d@+%d+%d, "
 657                                "dest: @+%d+%d\n",
 658                                width, height, xsrc, ysrc,
 659                                xdest, ydest));
 660     }
 661 #endif
 662
 663   DeleteObject (src_rgn);
 664   DeleteObject (draw_rgn);
 665   DeleteObject (outside_rgn);
 666
 667   /* Strangely enough, this function is called also to bitblt
 668    * from a window.
 669    */
 670   if (src_private->window_type == GDK_DRAWABLE_PIXMAP)
 671     {
 672       if ((srcdc = CreateCompatibleDC (hdc)) == NULL)
 673         WIN32_GDI_FAILED ("CreateCompatibleDC");
 674
 675       if ((hgdiobj = SelectObject (srcdc, GDK_DRAWABLE_XID (src))) == NULL)
 676         WIN32_GDI_FAILED ("SelectObject");
 677
 678       if (!BitBlt (hdc, xdest, ydest, width, height,
 679                    srcdc, xsrc, ysrc, SRCCOPY))
 680         WIN32_GDI_FAILED ("BitBlt");
 681
 682       if ((SelectObject (srcdc, hgdiobj) == NULL))
 683         WIN32_GDI_FAILED ("SelectObject");
 684
 685       if (!DeleteDC (srcdc))
 686         WIN32_GDI_FAILED ("DeleteDC");
 687     }
 688   else
 689     {
 690       if (GDK_DRAWABLE_XID(drawable) == GDK_DRAWABLE_XID (src))
 691         {
 692           /* Blitting inside a window, use ScrollDC */
 693           RECT scrollRect, clipRect, emptyRect;
 694           HRGN updateRgn;
 695
 696           scrollRect.left = MIN (xsrc, xdest);
 697           scrollRect.top = MIN (ysrc, ydest);
 698           scrollRect.right = MAX (xsrc + width + 1, xdest + width + 1);
 699           scrollRect.bottom = MAX (ysrc + height + 1, ydest + height + 1);
 700
 701           clipRect.left = xdest;
 702           clipRect.top = ydest;
 703           clipRect.right = xdest + width + 1;
 704           clipRect.bottom = ydest + height + 1;
 705
 706           SetRectEmpty (&emptyRect);
 707           updateRgn = CreateRectRgnIndirect (&emptyRect);
 708           if (!ScrollDC (hdc, xdest - xsrc, ydest - ysrc,
 709                          &scrollRect, &clipRect,
 710                          updateRgn, NULL))
 711             WIN32_GDI_FAILED ("ScrollDC");
 712           if (!InvalidateRgn (GDK_DRAWABLE_XID (drawable), updateRgn, FALSE))
 713             WIN32_GDI_FAILED ("InvalidateRgn");
 714           if (!UpdateWindow (GDK_DRAWABLE_XID (drawable)))
 715             WIN32_GDI_FAILED ("UpdateWindow");
 716         }
 717       else
 718         {
 719           if ((srcdc = GetDC (GDK_DRAWABLE_XID (src))) == NULL)
 720             WIN32_GDI_FAILED ("GetDC");
 721
 722           if (!BitBlt (hdc, xdest, ydest, width, height,
 723                        srcdc, xsrc, ysrc, SRCCOPY))
 724             WIN32_GDI_FAILED ("BitBlt");
 725           ReleaseDC (GDK_DRAWABLE_XID (src), srcdc);
 726         }
 727     }
 728   gdk_gc_postdraw (drawable, gc_private, 0);
 729 }
 730
 731 static void
 732 gdk_win32_draw_points (GdkDrawable *drawable,
 733                        GdkGC       *gc,
 734                        GdkPoint    *points,
 735                        gint         npoints)
 736 {
 737   HDC hdc;
 738   COLORREF fg;
 739   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 740   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 741   GdkDrawablePrivate *drawable_private = (GdkDrawablePrivate *) drawable;
 742   GdkColormapPrivateWin32 *colormap_private =
 743     (GdkColormapPrivateWin32 *) drawable_private->colormap;
 744   int i;
 745
 746   hdc = gdk_gc_predraw (drawable, gc_private, 0);
 747
 748   fg = gdk_colormap_color (colormap_private, gc_data->foreground);
 749
 750   GDK_NOTE (MISC, g_print ("gdk_draw_points: %#x %dx%.06x\n",
 751                            GDK_DRAWABLE_XID (drawable), npoints, fg));
 752
 753   for (i = 0; i < npoints; i++)
 754     SetPixel (hdc, points[i].x, points[i].y, fg);
 755
 756   gdk_gc_postdraw (drawable, gc_private, 0);
 757 }
 758
 759 static void
 760 gdk_win32_draw_segments (GdkDrawable *drawable,
 761                          GdkGC       *gc,
 762                          GdkSegment  *segs,
 763                          gint         nsegs)
 764 {
 765   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 766   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 767   HDC hdc;
 768   HBRUSH hbr = NULL;
 769   gboolean ok = TRUE;
 770   int i;
 771
 772   GDK_NOTE (MISC, g_print ("gdk_win32_draw_segments: %#x nsegs: %d\n",
 773                            GDK_DRAWABLE_XID (drawable), nsegs));
 774
 775   hdc = gdk_gc_predraw (drawable, gc_private,
 776                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 777
 778   if (gc_data->fill_style == GDK_OPAQUE_STIPPLED)
 779     {
 780       if (!BeginPath (hdc))
 781         WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
 782
 783       for (i = 0; i < nsegs; i++)
 784         {
 785           if (ok && !MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
 786             WIN32_GDI_FAILED ("MoveToEx"), ok = FALSE;
 787           if (ok && !LineTo (hdc, segs[i].x2, segs[i].y2))
 788             WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
 789
 790           /* Draw end pixel */
 791           if (ok && gc_data->pen_width == 1)
 792             if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
 793               WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
 794         }
 795
 796       if (ok && !EndPath (hdc))
 797         WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
 798
 799       if (ok && !WidenPath (hdc))
 800         WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
 801
 802       if (ok && !FillPath (hdc))
 803         WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
 804
 805       if (hbr != NULL)
 806         if (!DeleteObject (hbr))
 807           WIN32_GDI_FAILED ("DeleteObject");
 808     }
 809   else
 810     {
 811       for (i = 0; i < nsegs; i++)
 812         {
 813           if (!MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
 814             WIN32_GDI_FAILED ("MoveToEx");
 815           if (!LineTo (hdc, segs[i].x2, segs[i].y2))
 816             WIN32_GDI_FAILED ("LineTo");
 817
 818           /* Draw end pixel */
 819           if (gc_data->pen_width == 1)
 820             if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
 821               WIN32_GDI_FAILED ("LineTo");
 822         }
 823     }
 824   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 825 }
 826
 827 static void
 828 gdk_win32_draw_lines (GdkDrawable *drawable,
 829                       GdkGC       *gc,
 830                       GdkPoint    *points,
 831                       gint         npoints)
 832 {
 833   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 834   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 835   HDC hdc;
 836   POINT *pts;
 837   int i;
 838
 839   if (npoints < 2)
 840     return;
 841
 842   hdc = gdk_gc_predraw (drawable, gc_private,
 843                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 844 #if 1
 845   pts = g_new (POINT, npoints);
 846
 847   for (i = 0; i < npoints; i++)
 848     {
 849       pts[i].x = points[i].x;
 850       pts[i].y = points[i].y;
 851     }
 852
 853   if (!Polyline (hdc, pts, npoints))
 854     WIN32_GDI_FAILED ("Polyline");
 855
 856   g_free (pts);
 857
 858   /* Draw end pixel */
 859   if (gc_data->pen_width == 1)
 860     {
 861       MoveToEx (hdc, points[npoints-1].x, points[npoints-1].y, NULL);
 862       if (!LineTo (hdc, points[npoints-1].x + 1, points[npoints-1].y))
 863         WIN32_GDI_FAILED ("LineTo");
 864     }
 865 #else
 866   MoveToEx (hdc, points[0].x, points[0].y, NULL);
 867   for (i = 1; i < npoints; i++)
 868     if (!LineTo (hdc, points[i].x, points[i].y))
 869       WIN32_GDI_FAILED ("LineTo");
 870
 871   /* Draw end pixel */
 872   /* LineTo doesn't draw the last point, so if we have a pen width of 1,
 873    * we draw the end pixel separately... With wider pens we don't care.
 874    * //HB: But the NT developers don't read their API documentation ...
 875    */
 876   if (gc_data->pen_width == 1 && windows_version > 0x80000000)
 877     if (!LineTo (hdc, points[npoints-1].x + 1, points[npoints-1].y))
 878       WIN32_GDI_FAILED ("LineTo");
 879 #endif
 880   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 881 }