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 "gdkdrawable.h"
  37 #include "gdkprivate.h"
  38 #include "gdkwindow.h"
  39 #include "gdkwin32.h"
  40
  41 static void gdk_win32_drawable_destroy   (GdkDrawable     *drawable);
  42
  43 static void gdk_win32_draw_rectangle (GdkDrawable    *drawable,
  44                                       GdkGC          *gc,
  45                                       gint            filled,
  46                                       gint            x,
  47                                       gint            y,
  48                                       gint            width,
  49                                       gint            height);
  50 static void gdk_win32_draw_arc       (GdkDrawable    *drawable,
  51                                       GdkGC          *gc,
  52                                       gint            filled,
  53                                       gint            x,
  54                                       gint            y,
  55                                       gint            width,
  56                                       gint            height,
  57                                       gint            angle1,
  58                                       gint            angle2);
  59 static void gdk_win32_draw_polygon   (GdkDrawable    *drawable,
  60                                       GdkGC          *gc,
  61                                       gint            filled,
  62                                       GdkPoint       *points,
  63                                       gint            npoints);
  64 static void gdk_win32_draw_text      (GdkDrawable    *drawable,
  65                                       GdkFont        *font,
  66                                       GdkGC          *gc,
  67                                       gint            x,
  68                                       gint            y,
  69                                       const gchar    *text,
  70                                       gint            text_length);
  71 static void gdk_win32_draw_text_wc   (GdkDrawable    *drawable,
  72                                       GdkFont        *font,
  73                                       GdkGC          *gc,
  74                                       gint            x,
  75                                       gint            y,
  76                                       const GdkWChar *text,
  77                                       gint            text_length);
  78 static void gdk_win32_draw_drawable  (GdkDrawable    *drawable,
  79                                       GdkGC          *gc,
  80                                       GdkPixmap      *src,
  81                                       gint            xsrc,
  82                                       gint            ysrc,
  83                                       gint            xdest,
  84                                       gint            ydest,
  85                                       gint            width,
  86                                       gint            height);
  87 static void gdk_win32_draw_points    (GdkDrawable    *drawable,
  88                                       GdkGC          *gc,
  89                                       GdkPoint       *points,
  90                                       gint            npoints);
  91 static void gdk_win32_draw_segments  (GdkDrawable    *drawable,
  92                                       GdkGC          *gc,
  93                                       GdkSegment     *segs,
  94                                       gint            nsegs);
  95 static void gdk_win32_draw_lines     (GdkDrawable    *drawable,
  96                                       GdkGC          *gc,
  97                                       GdkPoint       *points,
  98                                       gint            npoints);
  99
 100 GdkDrawableClass _gdk_win32_drawable_class = {
 101   gdk_win32_drawable_destroy,
 102   _gdk_win32_gc_new,
 103   gdk_win32_draw_rectangle,
 104   gdk_win32_draw_arc,
 105   gdk_win32_draw_polygon,
 106   gdk_win32_draw_text,
 107   gdk_win32_draw_text_wc,
 108   gdk_win32_draw_drawable,
 109   gdk_win32_draw_points,
 110   gdk_win32_draw_segments,
 111   gdk_win32_draw_lines
 112 };
 113
 114 /*****************************************************
 115  * Win32 specific implementations of generic functions *
 116  *****************************************************/
 117
 118 GdkColormap*
 119 gdk_drawable_get_colormap (GdkDrawable *drawable)
 120 {
 121   GdkDrawablePrivate *drawable_private;
 122
 123   g_return_val_if_fail (drawable != NULL, NULL);
 124   drawable_private = (GdkDrawablePrivate*) drawable;
 125
 126   if (!GDK_DRAWABLE_DESTROYED (drawable))
 127     {
 128       if (drawable_private->colormap == NULL)
 129         return gdk_colormap_get_system (); /* XXX ??? */
 130       else
 131         return drawable_private->colormap;
 132     }
 133
 134   return NULL;
 135 }
 136
 137 void
 138 gdk_drawable_set_colormap (GdkDrawable *drawable,
 139                            GdkColormap *colormap)
 140 {
 141   GdkDrawablePrivate *drawable_private;
 142   GdkColormapPrivateWin32 *colormap_private;
 143
 144   g_return_if_fail (drawable != NULL);
 145   g_return_if_fail (colormap != NULL);
 146
 147   drawable_private = (GdkDrawablePrivate *) drawable;
 148   colormap_private = (GdkColormapPrivateWin32 *) colormap;
 149
 150   if (!GDK_DRAWABLE_DESTROYED (drawable))
 151     {
 152       if (GDK_IS_WINDOW (drawable))
 153         {
 154           g_return_if_fail (colormap_private->base.visual !=
 155                             ((GdkColormapPrivate *) (drawable_private->colormap))->visual);
 156           /* XXX ??? */
 157           GDK_NOTE (MISC, g_print ("gdk_drawable_set_colormap: %#x %#x\n",
 158                                    GDK_DRAWABLE_XID (drawable),
 159                                    colormap_private->xcolormap));
 160         }
 161       if (drawable_private->colormap)
 162         gdk_colormap_unref (drawable_private->colormap);
 163       drawable_private->colormap = colormap;
 164       gdk_colormap_ref (drawable_private->colormap);
 165
 166       if (GDK_IS_WINDOW (drawable)
 167           && drawable_private->window_type != GDK_WINDOW_TOPLEVEL)
 168         gdk_window_add_colormap_windows (drawable);
 169     }
 170 }
 171
 172 /* Drawing
 173  */
 174 static void
 175 gdk_win32_drawable_destroy (GdkDrawable *drawable)
 176 {
 177
 178 }
 179
 180 static void
 181 gdk_win32_draw_rectangle (GdkDrawable *drawable,
 182                           GdkGC       *gc,
 183                           gint         filled,
 184                           gint         x,
 185                           gint         y,
 186                           gint         width,
 187                           gint         height)
 188 {
 189   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 190   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 191   HDC hdc;
 192   HGDIOBJ oldpen, oldbrush;
 193   HBRUSH hbr = NULL;
 194   POINT pts[4];
 195   gboolean ok = TRUE;
 196
 197   GDK_NOTE (MISC, g_print ("gdk_win32_draw_rectangle: %#x (%d) %s%dx%d@+%d+%d\n",
 198                            GDK_DRAWABLE_XID (drawable),
 199                            gc_private,
 200                            (filled ? "fill " : ""),
 201                            width, height, x, y));
 202
 203   hdc = gdk_gc_predraw (drawable, gc_private,
 204                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 205
 206 #if 0
 207   {
 208     HBRUSH hbr = GetCurrentObject (hdc, OBJ_BRUSH);
 209     HPEN hpen = GetCurrentObject (hdc, OBJ_PEN);
 210     LOGBRUSH lbr;
 211     LOGPEN lpen;
 212     GetObject (hbr, sizeof (lbr), &lbr);
 213     GetObject (hpen, sizeof (lpen), &lpen);
 214
 215     g_print ("current brush: style = %s, color = 0x%.08x\n",
 216              (lbr.lbStyle == BS_SOLID ? "SOLID" : "???"),
 217              lbr.lbColor);
 218     g_print ("current pen: style = %s, width = %d, color = 0x%.08x\n",
 219              (lpen.lopnStyle == PS_SOLID ? "SOLID" : "???"),
 220              lpen.lopnWidth,
 221              lpen.lopnColor);
 222   }
 223 #endif
 224
 225   if (gc_data->fill_style == GDK_OPAQUE_STIPPLED)
 226     {
 227       if (!BeginPath (hdc))
 228         WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
 229
 230       /* Win9x doesn't support Rectangle calls in a path,
 231        * thus use Polyline.
 232        */
 233
 234       pts[0].x = x;
 235       pts[0].y = y;
 236       pts[1].x = x + width + 1;
 237       pts[1].y = y;
 238       pts[2].x = x + width + 1;
 239       pts[2].y = y + height + 1;
 240       pts[3].x = x;
 241       pts[3].y = y + height + 1;
 242
 243       if (ok)
 244         MoveToEx (hdc, x, y, NULL);
 245
 246       if (ok && !Polyline (hdc, pts, 4))
 247         WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
 248
 249       if (ok && !CloseFigure (hdc))
 250         WIN32_GDI_FAILED ("CloseFigure"), ok = FALSE;
 251
 252       if (ok && !EndPath (hdc))
 253         WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
 254
 255       if (ok && !filled)
 256         if (!WidenPath (hdc))
 257           WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
 258
 259       if (ok && !FillPath (hdc))
 260         WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
 261
 262       if (hbr != NULL)
 263         if (!DeleteObject (hbr))
 264           WIN32_GDI_FAILED ("DeleteObject");
 265     }
 266   else
 267     {
 268       if (filled)
 269         oldpen = SelectObject (hdc, GetStockObject (NULL_PEN));
 270       else
 271         oldbrush = SelectObject (hdc, GetStockObject (HOLLOW_BRUSH));
 272
 273       if (!Rectangle (hdc, x, y, x+width+1, y+height+1))
 274         WIN32_GDI_FAILED ("Rectangle");
 275
 276       if (filled)
 277         SelectObject (hdc, oldpen);
 278       else
 279         SelectObject (hdc, oldbrush);
 280     }
 281
 282   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 283 }
 284
 285 static void
 286 gdk_win32_draw_arc (GdkDrawable *drawable,
 287                     GdkGC       *gc,
 288                     gint         filled,
 289                     gint         x,
 290                     gint         y,
 291                     gint         width,
 292                     gint         height,
 293                     gint         angle1,
 294                     gint         angle2)
 295 {
 296   GdkGCPrivate *gc_private;
 297   HDC hdc;
 298   int nXStartArc, nYStartArc, nXEndArc, nYEndArc;
 299
 300   gc_private = (GdkGCPrivate*) gc;
 301
 302   GDK_NOTE (MISC, g_print ("gdk_draw_arc: %#x  %d,%d,%d,%d  %d %d\n",
 303                            GDK_DRAWABLE_XID (drawable),
 304                            x, y, width, height, angle1, angle2));
 305
 306   if (width != 0 && height != 0 && angle2 != 0)
 307     {
 308       hdc = gdk_gc_predraw (drawable, gc_private,
 309                             GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 310
 311       if (angle2 >= 360*64)
 312         {
 313           nXStartArc = nYStartArc = nXEndArc = nYEndArc = 0;
 314         }
 315       else if (angle2 > 0)
 316         {
 317           /* The 100. is just an arbitrary value */
 318           nXStartArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
 319           nYStartArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
 320           nXEndArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
 321           nYEndArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
 322         }
 323       else
 324         {
 325           nXEndArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
 326           nYEndArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
 327           nXStartArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
 328           nYStartArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
 329         }
 330
 331       /* GDK_OPAQUE_STIPPLED arcs not implemented. */
 332
 333       if (filled)
 334         {
 335           GDK_NOTE (MISC, g_print ("...Pie(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
 336                                    x, y, x+width, y+height,
 337                                    nXStartArc, nYStartArc,
 338                                    nXEndArc, nYEndArc));
 339           if (!Pie (hdc, x, y, x+width, y+height,
 340                     nXStartArc, nYStartArc, nXEndArc, nYEndArc))
 341             WIN32_GDI_FAILED ("Pie");
 342         }
 343       else
 344         {
 345           GDK_NOTE (MISC, g_print ("...Arc(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
 346                                    x, y, x+width, y+height,
 347                                    nXStartArc, nYStartArc,
 348                                    nXEndArc, nYEndArc));
 349           if (!Arc (hdc, x, y, x+width, y+height,
 350                     nXStartArc, nYStartArc, nXEndArc, nYEndArc))
 351             WIN32_GDI_FAILED ("Arc");
 352         }
 353       gdk_gc_postdraw (drawable, gc_private,
 354                        GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 355     }
 356 }
 357
 358 static void
 359 gdk_win32_draw_polygon (GdkDrawable *drawable,
 360                         GdkGC       *gc,
 361                         gint         filled,
 362                         GdkPoint    *points,
 363                         gint         npoints)
 364 {
 365   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 366   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 367   HDC hdc;
 368   HBRUSH hbr = NULL;
 369   POINT *pts;
 370   gboolean ok = TRUE;
 371   int i;
 372
 373   GDK_NOTE (MISC, g_print ("gdk_win32_draw_polygon: %#x (%d) %d\n",
 374                            GDK_DRAWABLE_XID (drawable), gc_private,
 375                            npoints));
 376
 377   if (npoints < 2)
 378     return;
 379
 380   hdc = gdk_gc_predraw (drawable, gc_private,
 381                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 382   pts = g_new (POINT, npoints+1);
 383
 384   for (i = 0; i < npoints; i++)
 385     {
 386       pts[i].x = points[i].x;
 387       pts[i].y = points[i].y;
 388     }
 389
 390   if (gc_data->fill_style == GDK_OPAQUE_STIPPLED)
 391     {
 392       if (!BeginPath (hdc))
 393         WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
 394
 395       MoveToEx (hdc, points[0].x, points[0].y, NULL);
 396
 397       if (pts[0].x == pts[npoints-1].x && pts[0].y == pts[npoints-1].y)
 398         npoints--;
 399
 400       if (ok && !Polyline (hdc, pts, 4))
 401         WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
 402
 403       if (ok && !CloseFigure (hdc))
 404         WIN32_GDI_FAILED ("CloseFigure"), ok = FALSE;
 405
 406       if (ok && !EndPath (hdc))
 407         WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
 408
 409       if (ok && !filled)
 410         if (!WidenPath (hdc))
 411           WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
 412
 413       if (ok && !FillPath (hdc))
 414         WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
 415
 416       if (hbr != NULL)
 417         if (!DeleteObject (hbr))
 418           WIN32_GDI_FAILED ("DeleteObject");
 419     }
 420   else
 421     {
 422       if (points[0].x != points[npoints-1].x
 423           || points[0].y != points[npoints-1].y)
 424         {
 425           pts[npoints].x = points[0].x;
 426           pts[npoints].y = points[0].y;
 427           npoints++;
 428         }
 429
 430       if (filled)
 431         {
 432           if (!Polygon (hdc, pts, npoints))
 433             WIN32_GDI_FAILED ("Polygon");
 434         }
 435       else
 436         {
 437           if (!Polyline (hdc, pts, npoints))
 438             WIN32_GDI_FAILED ("Polyline");
 439         }
 440     }
 441   g_free (pts);
 442   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 443 }
 444
 445 typedef struct
 446 {
 447   gint x, y;
 448   HDC hdc;
 449 } gdk_draw_text_arg;
 450
 451 static void
 452 gdk_draw_text_handler (GdkWin32SingleFont *singlefont,
 453                        const wchar_t      *wcstr,
 454                        int                 wclen,
 455                        void               *arg)
 456 {
 457   HGDIOBJ oldfont;
 458   SIZE size;
 459   gdk_draw_text_arg *argp = (gdk_draw_text_arg *) arg;
 460
 461   if (!singlefont)
 462     return;
 463
 464   if ((oldfont = SelectObject (argp->hdc, singlefont->xfont)) == NULL)
 465     {
 466       WIN32_GDI_FAILED ("SelectObject");
 467       return;
 468     }
 469
 470   if (!TextOutW (argp->hdc, argp->x, argp->y, wcstr, wclen))
 471     WIN32_GDI_FAILED ("TextOutW");
 472   GetTextExtentPoint32W (argp->hdc, wcstr, wclen, &size);
 473   argp->x += size.cx;
 474
 475   SelectObject (argp->hdc, oldfont);
 476 }
 477
 478 static void
 479 gdk_win32_draw_text (GdkDrawable *drawable,
 480                      GdkFont     *font,
 481                      GdkGC       *gc,
 482                      gint         x,
 483                      gint         y,
 484                      const gchar *text,
 485                      gint         text_length)
 486 {
 487   GdkGCPrivate *gc_private;
 488   wchar_t *wcstr;
 489   gint wlen;
 490   gdk_draw_text_arg arg;
 491
 492
 493   if (GDK_DRAWABLE_DESTROYED (drawable))
 494     return;
 495
 496   if (text_length == 0)
 497     return;
 498
 499   g_assert (font->type == GDK_FONT_FONT || font->type == GDK_FONT_FONTSET);
 500
 501   gc_private = (GdkGCPrivate*) gc;
 502
 503   arg.x = x;
 504   arg.y = y;
 505   arg.hdc = gdk_gc_predraw (drawable, gc_private,
 506                             GDK_GC_FOREGROUND|GDK_GC_FONT);
 507
 508   GDK_NOTE (MISC, g_print ("gdk_draw_text: %#x (%d,%d) \"%.*s\" (len %d)\n",
 509                            GDK_DRAWABLE_XID (drawable),
 510                            x, y,
 511                            (text_length > 10 ? 10 : text_length),
 512                            text, text_length));
 513
 514   wcstr = g_new (wchar_t, text_length);
 515   if ((wlen = gdk_nmbstowchar_ts (wcstr, text, text_length, text_length)) == -1)
 516     g_warning ("gdk_draw_text: gdk_nmbstowchar_ts failed");
 517   else
 518     gdk_wchar_text_handle (font, wcstr, wlen,
 519                            gdk_draw_text_handler, &arg);
 520
 521   g_free (wcstr);
 522
 523   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_FONT);
 524 }
 525
 526 static void
 527 gdk_win32_draw_text_wc (GdkDrawable      *drawable,
 528                         GdkFont          *font,
 529                         GdkGC            *gc,
 530                         gint              x,
 531                         gint              y,
 532                         const GdkWChar *text,
 533                         gint              text_length)
 534 {
 535   GdkGCPrivate *gc_private;
 536   gint i, wlen;
 537   wchar_t *wcstr;
 538   gdk_draw_text_arg arg;
 539
 540
 541   if (GDK_DRAWABLE_DESTROYED (drawable))
 542     return;
 543
 544   if (text_length == 0)
 545     return;
 546
 547   g_assert (font->type == GDK_FONT_FONT || font->type == GDK_FONT_FONTSET);
 548
 549   gc_private = (GdkGCPrivate*) gc;
 550
 551   arg.x = x;
 552   arg.y = y;
 553   arg.hdc = gdk_gc_predraw (drawable, gc_private,
 554                             GDK_GC_FOREGROUND|GDK_GC_FONT);
 555
 556   GDK_NOTE (MISC, g_print ("gdk_draw_text_wc: %#x (%d,%d) len: %d\n",
 557                            GDK_DRAWABLE_XID (drawable),
 558                            x, y, text_length));
 559
 560   if (sizeof (wchar_t) != sizeof (GdkWChar))
 561     {
 562       wcstr = g_new (wchar_t, text_length);
 563       for (i = 0; i < text_length; i++)
 564         wcstr[i] = text[i];
 565     }
 566   else
 567     wcstr = (wchar_t *) text;
 568
 569   gdk_wchar_text_handle (font, wcstr, text_length,
 570                          gdk_draw_text_handler, &arg);
 571
 572   if (sizeof (wchar_t) != sizeof (GdkWChar))
 573     g_free (wcstr);
 574
 575   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_FONT);
 576 }
 577
 578 static void
 579 gdk_win32_draw_drawable (GdkDrawable *drawable,
 580                          GdkGC       *gc,
 581                          GdkPixmap   *src,
 582                          gint         xsrc,
 583                          gint         ysrc,
 584                          gint         xdest,
 585                          gint         ydest,
 586                          gint         width,
 587                          gint         height)
 588 {
 589   GdkDrawablePrivate *src_private;
 590   GdkGCPrivate *gc_private;
 591   HDC hdc;
 592   HDC srcdc;
 593   HGDIOBJ hgdiobj;
 594   HRGN src_rgn, draw_rgn, outside_rgn;
 595   RECT r;
 596
 597   src_private = (GdkDrawablePrivate*) src;
 598   gc_private = (GdkGCPrivate*) gc;
 599
 600   GDK_NOTE (MISC, g_print ("gdk_draw_pixmap: dest: %#x "
 601                            "src: %#x %dx%d@+%d+%d"
 602                            " dest: %#x @+%d+%d\n",
 603                            GDK_DRAWABLE_XID (drawable),
 604                            GDK_DRAWABLE_XID (src),
 605                            width, height, xsrc, ysrc,
 606                            GDK_DRAWABLE_XID (drawable), xdest, ydest));
 607
 608   hdc = gdk_gc_predraw (drawable, gc_private, 0);
 609
 610   src_rgn = CreateRectRgn (0, 0, src_private->width + 1, src_private->height + 1);
 611   draw_rgn = CreateRectRgn (xsrc, ysrc, xsrc + width + 1, ysrc + height + 1);
 612   SetRectEmpty (&r);
 613   outside_rgn = CreateRectRgnIndirect (&r);
 614
 615   if (GDK_DRAWABLE_TYPE (drawable) != GDK_DRAWABLE_PIXMAP)
 616     {
 617       /* If we are drawing on a window, calculate the region that is
 618        * outside the source pixmap, and invalidate that, causing it to
 619        * be cleared. XXX
 620        */
 621       if (CombineRgn (outside_rgn, draw_rgn, src_rgn, RGN_DIFF) != NULLREGION)
 622         {
 623           OffsetRgn (outside_rgn, xdest, ydest);
 624           GDK_NOTE (MISC, (GetRgnBox (outside_rgn, &r),
 625                            g_print ("...calling InvalidateRgn, "
 626                                     "bbox: %dx%d@+%d+%d\n",
 627                                     r.right - r.left - 1, r.bottom - r.top - 1,
 628                                     r.left, r.top)));
 629           InvalidateRgn (GDK_DRAWABLE_XID (drawable), outside_rgn, TRUE);
 630         }
 631     }
 632
 633 #if 1 /* Don't know if this is necessary  */
 634   if (CombineRgn (draw_rgn, draw_rgn, src_rgn, RGN_AND) == COMPLEXREGION)
 635     g_warning ("gdk_draw_pixmap: CombineRgn returned a COMPLEXREGION");
 636
 637   GetRgnBox (draw_rgn, &r);
 638   if (r.left != xsrc
 639       || r.top != ysrc
 640       || r.right != xsrc + width + 1
 641       || r.bottom != ysrc + height + 1)
 642     {
 643       xdest += r.left - xsrc;
 644       xsrc = r.left;
 645       ydest += r.top - ysrc;
 646       ysrc = r.top;
 647       width = r.right - xsrc - 1;
 648       height = r.bottom - ysrc - 1;
 649
 650       GDK_NOTE (MISC, g_print ("... restricted to src: %dx%d@+%d+%d, "
 651                                "dest: @+%d+%d\n",
 652                                width, height, xsrc, ysrc,
 653                                xdest, ydest));
 654     }
 655 #endif
 656
 657   DeleteObject (src_rgn);
 658   DeleteObject (draw_rgn);
 659   DeleteObject (outside_rgn);
 660
 661   /* Strangely enough, this function is called also to bitblt
 662    * from a window.
 663    */
 664   if (src_private->window_type == GDK_DRAWABLE_PIXMAP)
 665     {
 666       if ((srcdc = CreateCompatibleDC (hdc)) == NULL)
 667         WIN32_GDI_FAILED ("CreateCompatibleDC");
 668
 669       if ((hgdiobj = SelectObject (srcdc, GDK_DRAWABLE_XID (src))) == NULL)
 670         WIN32_GDI_FAILED ("SelectObject");
 671
 672       if (!BitBlt (hdc, xdest, ydest, width, height,
 673                    srcdc, xsrc, ysrc, SRCCOPY))
 674         WIN32_GDI_FAILED ("BitBlt");
 675
 676       if ((SelectObject (srcdc, hgdiobj) == NULL))
 677         WIN32_GDI_FAILED ("SelectObject");
 678
 679       if (!DeleteDC (srcdc))
 680         WIN32_GDI_FAILED ("DeleteDC");
 681     }
 682   else
 683     {
 684       if (GDK_DRAWABLE_XID(drawable) == GDK_DRAWABLE_XID (src))
 685         {
 686           /* Blitting inside a window, use ScrollDC */
 687           RECT scrollRect, clipRect, emptyRect;
 688           HRGN updateRgn;
 689
 690           scrollRect.left = MIN (xsrc, xdest);
 691           scrollRect.top = MIN (ysrc, ydest);
 692           scrollRect.right = MAX (xsrc + width + 1, xdest + width + 1);
 693           scrollRect.bottom = MAX (ysrc + height + 1, ydest + height + 1);
 694
 695           clipRect.left = xdest;
 696           clipRect.top = ydest;
 697           clipRect.right = xdest + width + 1;
 698           clipRect.bottom = ydest + height + 1;
 699
 700           SetRectEmpty (&emptyRect);
 701           updateRgn = CreateRectRgnIndirect (&emptyRect);
 702           if (!ScrollDC (hdc, xdest - xsrc, ydest - ysrc,
 703                          &scrollRect, &clipRect,
 704                          updateRgn, NULL))
 705             WIN32_GDI_FAILED ("ScrollDC");
 706           if (!InvalidateRgn (GDK_DRAWABLE_XID (drawable), updateRgn, FALSE))
 707             WIN32_GDI_FAILED ("InvalidateRgn");
 708           if (!UpdateWindow (GDK_DRAWABLE_XID (drawable)))
 709             WIN32_GDI_FAILED ("UpdateWindow");
 710         }
 711       else
 712         {
 713           if ((srcdc = GetDC (GDK_DRAWABLE_XID (src))) == NULL)
 714             WIN32_GDI_FAILED ("GetDC");
 715
 716           if (!BitBlt (hdc, xdest, ydest, width, height,
 717                        srcdc, xsrc, ysrc, SRCCOPY))
 718             WIN32_GDI_FAILED ("BitBlt");
 719           ReleaseDC (GDK_DRAWABLE_XID (src), srcdc);
 720         }
 721     }
 722   gdk_gc_postdraw (drawable, gc_private, 0);
 723 }
 724
 725 static void
 726 gdk_win32_draw_points (GdkDrawable *drawable,
 727                        GdkGC       *gc,
 728                        GdkPoint    *points,
 729                        gint         npoints)
 730 {
 731   HDC hdc;
 732   COLORREF fg;
 733   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 734   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 735   GdkDrawablePrivate *drawable_private = (GdkDrawablePrivate *) drawable;
 736   GdkColormapPrivateWin32 *colormap_private =
 737     (GdkColormapPrivateWin32 *) drawable_private->colormap;
 738   int i;
 739
 740   hdc = gdk_gc_predraw (drawable, gc_private, 0);
 741
 742   fg = gdk_colormap_color (colormap_private, gc_data->foreground);
 743
 744   GDK_NOTE (MISC, g_print ("gdk_draw_points: %#x %dx%.06x\n",
 745                            GDK_DRAWABLE_XID (drawable), npoints, fg));
 746
 747   for (i = 0; i < npoints; i++)
 748     SetPixel (hdc, points[i].x, points[i].y, fg);
 749
 750   gdk_gc_postdraw (drawable, gc_private, 0);
 751 }
 752
 753 static void
 754 gdk_win32_draw_segments (GdkDrawable *drawable,
 755                          GdkGC       *gc,
 756                          GdkSegment  *segs,
 757                          gint         nsegs)
 758 {
 759   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 760   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 761   HDC hdc;
 762   HBRUSH hbr = NULL;
 763   gboolean ok = TRUE;
 764   int i;
 765
 766   GDK_NOTE (MISC, g_print ("gdk_win32_draw_segments: %#x nsegs: %d\n",
 767                            GDK_DRAWABLE_XID (drawable), nsegs));
 768
 769   hdc = gdk_gc_predraw (drawable, gc_private,
 770                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 771
 772   if (gc_data->fill_style == GDK_OPAQUE_STIPPLED)
 773     {
 774       if (!BeginPath (hdc))
 775         WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
 776
 777       for (i = 0; i < nsegs; i++)
 778         {
 779           if (ok && !MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
 780             WIN32_GDI_FAILED ("MoveToEx"), ok = FALSE;
 781           if (ok && !LineTo (hdc, segs[i].x2, segs[i].y2))
 782             WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
 783
 784           /* Draw end pixel */
 785           if (ok && gc_data->pen_width == 1)
 786             if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
 787               WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
 788         }
 789
 790       if (ok && !EndPath (hdc))
 791         WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
 792
 793       if (ok && !WidenPath (hdc))
 794         WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
 795
 796       if (ok && !FillPath (hdc))
 797         WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
 798
 799       if (hbr != NULL)
 800         if (!DeleteObject (hbr))
 801           WIN32_GDI_FAILED ("DeleteObject");
 802     }
 803   else
 804     {
 805       for (i = 0; i < nsegs; i++)
 806         {
 807           if (!MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
 808             WIN32_GDI_FAILED ("MoveToEx");
 809           if (!LineTo (hdc, segs[i].x2, segs[i].y2))
 810             WIN32_GDI_FAILED ("LineTo");
 811
 812           /* Draw end pixel */
 813           if (gc_data->pen_width == 1)
 814             if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
 815               WIN32_GDI_FAILED ("LineTo");
 816         }
 817     }
 818   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 819 }
 820
 821 static void
 822 gdk_win32_draw_lines (GdkDrawable *drawable,
 823                       GdkGC       *gc,
 824                       GdkPoint    *points,
 825                       gint         npoints)
 826 {
 827   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 828   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 829   HDC hdc;
 830   POINT *pts;
 831   int i;
 832
 833   if (npoints < 2)
 834     return;
 835
 836   hdc = gdk_gc_predraw (drawable, gc_private,
 837                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 838 #if 1
 839   pts = g_new (POINT, npoints);
 840
 841   for (i = 0; i < npoints; i++)
 842     {
 843       pts[i].x = points[i].x;
 844       pts[i].y = points[i].y;
 845     }
 846
 847   if (!Polyline (hdc, pts, npoints))
 848     WIN32_GDI_FAILED ("Polyline");
 849
 850   g_free (pts);
 851
 852   /* Draw end pixel */
 853   if (gc_data->pen_width == 1)
 854     {
 855       MoveToEx (hdc, points[npoints-1].x, points[npoints-1].y, NULL);
 856       if (!LineTo (hdc, points[npoints-1].x + 1, points[npoints-1].y))
 857         WIN32_GDI_FAILED ("LineTo");
 858     }
 859 #else
 860   MoveToEx (hdc, points[0].x, points[0].y, NULL);
 861   for (i = 1; i < npoints; i++)
 862     if (!LineTo (hdc, points[i].x, points[i].y))
 863       WIN32_GDI_FAILED ("LineTo");
 864
 865   /* Draw end pixel */
 866   /* LineTo doesn't draw the last point, so if we have a pen width of 1,
 867    * we draw the end pixel separately... With wider pens we don't care.
 868    * //HB: But the NT developers don't read their API documentation ...
 869    */
 870   if (gc_data->pen_width == 1 && windows_version > 0x80000000)
 871     if (!LineTo (hdc, points[npoints-1].x + 1, points[npoints-1].y))
 872       WIN32_GDI_FAILED ("LineTo");
 873 #endif
 874   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 875 }