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_API_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_API_FAILED ("Polyline"), ok = FALSE;
 248
 249       if (ok && !CloseFigure (hdc))
 250         WIN32_API_FAILED ("CloseFigure"), ok = FALSE;
 251
 252       if (ok && !EndPath (hdc))
 253         WIN32_API_FAILED ("EndPath"), ok = FALSE;
 254
 255       if (ok && !filled)
 256         if (!WidenPath (hdc))
 257           WIN32_API_FAILED ("WidenPath"), ok = FALSE;
 258
 259       if (ok && !FillPath (hdc))
 260         WIN32_API_FAILED ("FillPath"), ok = FALSE;
 261
 262       if (hbr != NULL)
 263         if (!DeleteObject (hbr))
 264           WIN32_API_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_API_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           Pie (hdc, x, y, x+width, y+height,
 340                nXStartArc, nYStartArc, nXEndArc, nYEndArc);
 341         }
 342       else
 343         {
 344           GDK_NOTE (MISC, g_print ("...Arc(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
 345                                    x, y, x+width, y+height,
 346                                    nXStartArc, nYStartArc,
 347                                    nXEndArc, nYEndArc));
 348           Arc (hdc, x, y, x+width, y+height,
 349                nXStartArc, nYStartArc, nXEndArc, nYEndArc);
 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_API_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_API_FAILED ("Polyline"), ok = FALSE;
 400
 401       if (ok && !CloseFigure (hdc))
 402         WIN32_API_FAILED ("CloseFigure"), ok = FALSE;
 403
 404       if (ok && !EndPath (hdc))
 405         WIN32_API_FAILED ("EndPath"), ok = FALSE;
 406
 407       if (ok && !filled)
 408         if (!WidenPath (hdc))
 409           WIN32_API_FAILED ("WidenPath"), ok = FALSE;
 410
 411       if (ok && !FillPath (hdc))
 412         WIN32_API_FAILED ("FillPath"), ok = FALSE;
 413
 414       if (hbr != NULL)
 415         if (!DeleteObject (hbr))
 416           WIN32_API_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_API_FAILED ("Polygon");
 432         }
 433       else
 434         {
 435           if (!Polyline (hdc, pts, npoints))
 436             WIN32_API_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_API_FAILED ("SelectObject");
 465       return;
 466     }
 467
 468   if (!TextOutW (argp->hdc, argp->x, argp->y, wcstr, wclen))
 469     WIN32_API_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 ((wlen = gdk_nmbstowchar_ts (wcstr, text, text_length, text_length)) == -1)
 514     g_warning ("gdk_draw_text: gdk_nmbstowchar_ts failed");
 515   else
 516     gdk_wchar_text_handle (font, wcstr, wlen,
 517                            gdk_draw_text_handler, &arg);
 518
 519   g_free (wcstr);
 520
 521   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_FONT);
 522 }
 523
 524 static void
 525 gdk_win32_draw_text_wc (GdkDrawable      *drawable,
 526                         GdkFont          *font,
 527                         GdkGC            *gc,
 528                         gint              x,
 529                         gint              y,
 530                         const GdkWChar *text,
 531                         gint              text_length)
 532 {
 533   GdkGCPrivate *gc_private;
 534   gint i, wlen;
 535   wchar_t *wcstr;
 536   gdk_draw_text_arg arg;
 537
 538
 539   if (GDK_DRAWABLE_DESTROYED (drawable))
 540     return;
 541
 542   if (text_length == 0)
 543     return;
 544
 545   g_assert (font->type == GDK_FONT_FONT || font->type == GDK_FONT_FONTSET);
 546
 547   gc_private = (GdkGCPrivate*) gc;
 548
 549   arg.x = x;
 550   arg.y = y;
 551   arg.hdc = gdk_gc_predraw (drawable, gc_private,
 552                             GDK_GC_FOREGROUND|GDK_GC_FONT);
 553
 554   GDK_NOTE (MISC, g_print ("gdk_draw_text_wc: %#x (%d,%d) len: %d\n",
 555                            GDK_DRAWABLE_XID (drawable),
 556                            x, y, text_length));
 557
 558   if (sizeof (wchar_t) != sizeof (GdkWChar))
 559     {
 560       wcstr = g_new (wchar_t, text_length);
 561       for (i = 0; i < text_length; i++)
 562         wcstr[i] = text[i];
 563     }
 564   else
 565     wcstr = (wchar_t *) text;
 566
 567   gdk_wchar_text_handle (font, wcstr, text_length,
 568                          gdk_draw_text_handler, &arg);
 569
 570   if (sizeof (wchar_t) != sizeof (GdkWChar))
 571     g_free (wcstr);
 572
 573   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_FONT);
 574 }
 575
 576 static void
 577 gdk_win32_draw_drawable (GdkDrawable *drawable,
 578                          GdkGC       *gc,
 579                          GdkPixmap   *src,
 580                          gint         xsrc,
 581                          gint         ysrc,
 582                          gint         xdest,
 583                          gint         ydest,
 584                          gint         width,
 585                          gint         height)
 586 {
 587   GdkDrawablePrivate *src_private;
 588   GdkGCPrivate *gc_private;
 589   HDC hdc;
 590   HDC srcdc;
 591   HGDIOBJ hgdiobj;
 592   HRGN src_rgn, draw_rgn, outside_rgn;
 593   RECT r;
 594
 595   src_private = (GdkDrawablePrivate*) src;
 596   gc_private = (GdkGCPrivate*) gc;
 597
 598   GDK_NOTE (MISC, g_print ("gdk_draw_pixmap: dest: %#x "
 599                            "src: %#x %dx%d@+%d+%d"
 600                            " dest: %#x @+%d+%d\n",
 601                            GDK_DRAWABLE_XID (drawable),
 602                            GDK_DRAWABLE_XID (src),
 603                            width, height, xsrc, ysrc,
 604                            GDK_DRAWABLE_XID (drawable), xdest, ydest));
 605
 606   hdc = gdk_gc_predraw (drawable, gc_private, 0);
 607
 608   src_rgn = CreateRectRgn (0, 0, src_private->width + 1, src_private->height + 1);
 609   draw_rgn = CreateRectRgn (xsrc, ysrc, xsrc + width + 1, ysrc + height + 1);
 610   SetRectEmpty (&r);
 611   outside_rgn = CreateRectRgnIndirect (&r);
 612
 613   if (GDK_DRAWABLE_TYPE (drawable) != GDK_DRAWABLE_PIXMAP)
 614     {
 615       /* If we are drawing on a window, calculate the region that is
 616        * outside the source pixmap, and invalidate that, causing it to
 617        * be cleared. XXX
 618        */
 619       if (CombineRgn (outside_rgn, draw_rgn, src_rgn, RGN_DIFF) != NULLREGION)
 620         {
 621           OffsetRgn (outside_rgn, xdest, ydest);
 622           GDK_NOTE (MISC, (GetRgnBox (outside_rgn, &r),
 623                            g_print ("...calling InvalidateRgn, "
 624                                     "bbox: %dx%d@+%d+%d\n",
 625                                     r.right - r.left - 1, r.bottom - r.top - 1,
 626                                     r.left, r.top)));
 627           InvalidateRgn (GDK_DRAWABLE_XID (drawable), outside_rgn, TRUE);
 628         }
 629     }
 630
 631 #if 1 /* Don't know if this is necessary  */
 632   if (CombineRgn (draw_rgn, draw_rgn, src_rgn, RGN_AND) == COMPLEXREGION)
 633     g_warning ("gdk_draw_pixmap: CombineRgn returned a COMPLEXREGION");
 634
 635   GetRgnBox (draw_rgn, &r);
 636   if (r.left != xsrc
 637       || r.top != ysrc
 638       || r.right != xsrc + width + 1
 639       || r.bottom != ysrc + height + 1)
 640     {
 641       xdest += r.left - xsrc;
 642       xsrc = r.left;
 643       ydest += r.top - ysrc;
 644       ysrc = r.top;
 645       width = r.right - xsrc - 1;
 646       height = r.bottom - ysrc - 1;
 647
 648       GDK_NOTE (MISC, g_print ("... restricted to src: %dx%d@+%d+%d, "
 649                                "dest: @+%d+%d\n",
 650                                width, height, xsrc, ysrc,
 651                                xdest, ydest));
 652     }
 653 #endif
 654
 655   DeleteObject (src_rgn);
 656   DeleteObject (draw_rgn);
 657   DeleteObject (outside_rgn);
 658
 659   /* Strangely enough, this function is called also to bitblt
 660    * from a window.
 661    */
 662   if (src_private->window_type == GDK_DRAWABLE_PIXMAP)
 663     {
 664       if ((srcdc = CreateCompatibleDC (hdc)) == NULL)
 665         WIN32_API_FAILED ("CreateCompatibleDC");
 666
 667       if ((hgdiobj = SelectObject (srcdc, GDK_DRAWABLE_XID (src))) == NULL)
 668         WIN32_API_FAILED ("SelectObject #1");
 669
 670       if (!BitBlt (hdc, xdest, ydest, width, height,
 671                    srcdc, xsrc, ysrc, SRCCOPY))
 672         WIN32_API_FAILED ("BitBlt");
 673
 674       if ((SelectObject (srcdc, hgdiobj) == NULL))
 675         WIN32_API_FAILED ("SelectObject #2");
 676
 677       if (!DeleteDC (srcdc))
 678         WIN32_API_FAILED ("DeleteDC");
 679     }
 680   else
 681     {
 682       if (GDK_DRAWABLE_XID(drawable) == GDK_DRAWABLE_XID (src))
 683         {
 684           /* Blitting inside a window, use ScrollDC */
 685           RECT scrollRect, clipRect, emptyRect;
 686           HRGN updateRgn;
 687
 688           scrollRect.left = MIN (xsrc, xdest);
 689           scrollRect.top = MIN (ysrc, ydest);
 690           scrollRect.right = MAX (xsrc + width + 1, xdest + width + 1);
 691           scrollRect.bottom = MAX (ysrc + height + 1, ydest + height + 1);
 692
 693           clipRect.left = xdest;
 694           clipRect.top = ydest;
 695           clipRect.right = xdest + width + 1;
 696           clipRect.bottom = ydest + height + 1;
 697
 698           SetRectEmpty (&emptyRect);
 699           updateRgn = CreateRectRgnIndirect (&emptyRect);
 700           if (!ScrollDC (hdc, xdest - xsrc, ydest - ysrc,
 701                          &scrollRect, &clipRect,
 702                          updateRgn, NULL))
 703             WIN32_API_FAILED ("ScrollDC");
 704           if (!InvalidateRgn (GDK_DRAWABLE_XID (drawable), updateRgn, FALSE))
 705             WIN32_API_FAILED ("InvalidateRgn");
 706           if (!UpdateWindow (GDK_DRAWABLE_XID (drawable)))
 707             WIN32_API_FAILED ("UpdateWindow");
 708         }
 709       else
 710         {
 711           if ((srcdc = GetDC (GDK_DRAWABLE_XID (src))) == NULL)
 712             WIN32_API_FAILED ("GetDC");
 713
 714           if (!BitBlt (hdc, xdest, ydest, width, height,
 715                        srcdc, xsrc, ysrc, SRCCOPY))
 716             WIN32_API_FAILED ("BitBlt");
 717           ReleaseDC (GDK_DRAWABLE_XID (src), srcdc);
 718         }
 719     }
 720   gdk_gc_postdraw (drawable, gc_private, 0);
 721 }
 722
 723 static void
 724 gdk_win32_draw_points (GdkDrawable *drawable,
 725                        GdkGC       *gc,
 726                        GdkPoint    *points,
 727                        gint         npoints)
 728 {
 729   HDC hdc;
 730   COLORREF fg;
 731   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 732   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 733   GdkDrawablePrivate *drawable_private = (GdkDrawablePrivate *) drawable;
 734   GdkColormapPrivateWin32 *colormap_private =
 735     (GdkColormapPrivateWin32 *) drawable_private->colormap;
 736   int i;
 737
 738   hdc = gdk_gc_predraw (drawable, gc_private, 0);
 739
 740   fg = gdk_colormap_color (colormap_private, gc_data->foreground);
 741
 742   GDK_NOTE (MISC, g_print ("gdk_draw_points: %#x %dx%.06x\n",
 743                            GDK_DRAWABLE_XID (drawable), npoints, fg));
 744
 745   for (i = 0; i < npoints; i++)
 746     SetPixel (hdc, points[i].x, points[i].y, fg);
 747
 748   gdk_gc_postdraw (drawable, gc_private, 0);
 749 }
 750
 751 static void
 752 gdk_win32_draw_segments (GdkDrawable *drawable,
 753                          GdkGC       *gc,
 754                          GdkSegment  *segs,
 755                          gint         nsegs)
 756 {
 757   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 758   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 759   HDC hdc;
 760   HBRUSH hbr = NULL;
 761   gboolean ok = TRUE;
 762   int i;
 763
 764   GDK_NOTE (MISC, g_print ("gdk_win32_draw_segments: %#x destdc: (%d) %#x "
 765                            "nsegs: %d\n",
 766                            GDK_DRAWABLE_XID (drawable),
 767                            gc_private, hdc,
 768                            nsegs));
 769
 770   hdc = gdk_gc_predraw (drawable, gc_private,
 771                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 772
 773   if (gc_data->fill_style == GDK_OPAQUE_STIPPLED)
 774     {
 775       if (!BeginPath (hdc))
 776         WIN32_API_FAILED ("BeginPath"), ok = FALSE;
 777
 778       for (i = 0; i < nsegs; i++)
 779         {
 780           if (ok && !MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
 781             WIN32_API_FAILED ("MoveToEx"), ok = FALSE;
 782           if (ok && !LineTo (hdc, segs[i].x2, segs[i].y2))
 783             WIN32_API_FAILED ("LineTo #1"), ok = FALSE;
 784
 785           /* Draw end pixel */
 786           if (ok && gc_data->pen_width == 1)
 787             if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
 788               WIN32_API_FAILED ("LineTo #2"), ok = FALSE;
 789         }
 790
 791       if (ok && !EndPath (hdc))
 792         WIN32_API_FAILED ("EndPath"), ok = FALSE;
 793
 794       if (ok && !WidenPath (hdc))
 795         WIN32_API_FAILED ("WidenPath"), ok = FALSE;
 796
 797       if (ok && !FillPath (hdc))
 798         WIN32_API_FAILED ("FillPath"), ok = FALSE;
 799
 800       if (hbr != NULL)
 801         if (!DeleteObject (hbr))
 802           WIN32_API_FAILED ("DeleteObject");
 803     }
 804   else
 805     {
 806       for (i = 0; i < nsegs; i++)
 807         {
 808           if (!MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
 809             WIN32_API_FAILED ("MoveToEx");
 810           if (!LineTo (hdc, segs[i].x2, segs[i].y2))
 811             WIN32_API_FAILED ("LineTo #1");
 812
 813           /* Draw end pixel */
 814           if (gc_data->pen_width == 1)
 815             if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
 816               WIN32_API_FAILED ("LineTo #2");
 817         }
 818     }
 819   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 820 }
 821
 822 static void
 823 gdk_win32_draw_lines (GdkDrawable *drawable,
 824                       GdkGC       *gc,
 825                       GdkPoint    *points,
 826                       gint         npoints)
 827 {
 828   GdkGCPrivate *gc_private = (GdkGCPrivate*) gc;
 829   GdkGCWin32Data *gc_data = GDK_GC_WIN32DATA (gc_private);
 830   HDC hdc;
 831   POINT *pts;
 832   int i;
 833
 834   if (npoints < 2)
 835     return;
 836
 837   hdc = gdk_gc_predraw (drawable, gc_private,
 838                         GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 839 #if 1
 840   pts = g_new (POINT, npoints);
 841
 842   for (i = 0; i < npoints; i++)
 843     {
 844       pts[i].x = points[i].x;
 845       pts[i].y = points[i].y;
 846     }
 847
 848   if (!Polyline (hdc, pts, npoints))
 849     WIN32_API_FAILED ("Polyline");
 850
 851   g_free (pts);
 852
 853   /* Draw end pixel */
 854   if (gc_data->pen_width == 1)
 855     {
 856       MoveToEx (hdc, points[npoints-1].x, points[npoints-1].y, NULL);
 857       if (!LineTo (hdc, points[npoints-1].x + 1, points[npoints-1].y))
 858         WIN32_API_FAILED ("LineTo");
 859     }
 860 #else
 861   MoveToEx (hdc, points[0].x, points[0].y, NULL);
 862   for (i = 1; i < npoints; i++)
 863     if (!LineTo (hdc, points[i].x, points[i].y))
 864       WIN32_API_FAILED ("LineTo #1");
 865
 866   /* Draw end pixel */
 867   /* LineTo doesn't draw the last point, so if we have a pen width of 1,
 868    * we draw the end pixel separately... With wider pens we don't care.
 869    * //HB: But the NT developers don't read their API documentation ...
 870    */
 871   if (gc_data->pen_width == 1 && windows_version > 0x80000000)
 872     if (!LineTo (hdc, points[npoints-1].x + 1, points[npoints-1].y))
 873       WIN32_API_FAILED ("LineTo #2");
 874 #endif
 875   gdk_gc_postdraw (drawable, gc_private, GDK_GC_FOREGROUND|GDK_GC_BACKGROUND);
 876 }