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70372ba8bd
* gdk/win32/gdkdraw.c (gdk_draw_pixmap): When blitting inside one window, use ScrollWindowEx, and call UpdateWindow. This prevents bugs when for instance part of the window was outside the display. Thanks to Philippe Colantoni for finding and fixing this.
757 lines
20 KiB
C
757 lines
20 KiB
C
/* GDK - The GIMP Drawing Kit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-1999. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include <math.h>
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#include <gdk/gdk.h>
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#include "gdkprivate.h"
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#ifndef G_PI
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#define G_PI 3.14159265358979323846
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#endif
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void
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gdk_draw_point (GdkDrawable *drawable,
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GdkGC *gc,
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gint x,
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gint y)
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{
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GdkWindowPrivate *drawable_private;
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GdkGCPrivate *gc_private;
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HDC hdc;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (gc != NULL);
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drawable_private = (GdkWindowPrivate*) drawable;
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if (drawable_private->destroyed)
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return;
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gc_private = (GdkGCPrivate*) gc;
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hdc = gdk_gc_predraw (drawable_private, gc_private);
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/* We use LineTo because SetPixel wants the COLORREF directly,
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* and doesn't use the current pen, which is what we want.
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*/
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if (!MoveToEx (hdc, x, y, NULL))
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g_warning ("gdk_draw_point: MoveToEx failed");
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if (!LineTo (hdc, x + 1, y))
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g_warning ("gdk_draw_point: LineTo failed");
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gdk_gc_postdraw (drawable_private, gc_private);
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}
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void
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gdk_draw_line (GdkDrawable *drawable,
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GdkGC *gc,
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gint x1,
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gint y1,
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gint x2,
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gint y2)
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{
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GdkWindowPrivate *drawable_private;
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GdkGCPrivate *gc_private;
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HDC hdc;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (gc != NULL);
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drawable_private = (GdkWindowPrivate*) drawable;
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if (drawable_private->destroyed)
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return;
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gc_private = (GdkGCPrivate*) gc;
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hdc = gdk_gc_predraw (drawable_private, gc_private);
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GDK_NOTE (MISC, g_print ("gdk_draw_line: %#x (%d) +%d+%d..+%d+%d\n",
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drawable_private->xwindow, gc_private,
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x1, y1, x2, y2));
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MoveToEx (hdc, x1, y1, NULL);
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if (!LineTo (hdc, x2, y2))
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g_warning ("gdk_draw_line: LineTo #1 failed");
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/* LineTo doesn't draw the last point, so if we have a pen width of 1,
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* we draw the end pixel separately... With wider pens it hopefully
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* doesn't matter?
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*/
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if (gc_private->pen_width == 1)
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if (!LineTo (hdc, x2 + 1, y2))
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g_warning ("gdk_draw_line: LineTo #2 failed");
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gdk_gc_postdraw (drawable_private, gc_private);
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}
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void
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gdk_draw_rectangle (GdkDrawable *drawable,
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GdkGC *gc,
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gint filled,
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gint x,
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gint y,
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gint width,
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gint height)
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{
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GdkWindowPrivate *drawable_private;
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GdkGCPrivate *gc_private;
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HDC hdc;
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HGDIOBJ oldpen, oldbrush;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (gc != NULL);
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drawable_private = (GdkWindowPrivate*) drawable;
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if (drawable_private->destroyed)
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return;
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gc_private = (GdkGCPrivate*) gc;
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if (width == -1)
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width = drawable_private->width;
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if (height == -1)
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height = drawable_private->height;
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hdc = gdk_gc_predraw (drawable_private, gc_private);
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GDK_NOTE (MISC, g_print ("gdk_draw_rectangle: %#x (%d) %s%dx%d@+%d+%d\n",
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drawable_private->xwindow,
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gc_private,
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(filled ? "fill " : ""),
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width, height, x, y));
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#if 0
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{
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HBRUSH hbr = GetCurrentObject (hdc, OBJ_BRUSH);
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HPEN hpen = GetCurrentObject (hdc, OBJ_PEN);
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LOGBRUSH lbr;
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LOGPEN lpen;
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GetObject (hbr, sizeof (lbr), &lbr);
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GetObject (hpen, sizeof (lpen), &lpen);
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g_print ("current brush: style = %s, color = 0x%.08x\n",
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(lbr.lbStyle == BS_SOLID ? "SOLID" : "???"),
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lbr.lbColor);
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g_print ("current pen: style = %s, width = %d, color = 0x%.08x\n",
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(lpen.lopnStyle == PS_SOLID ? "SOLID" : "???"),
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lpen.lopnWidth,
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lpen.lopnColor);
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}
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#endif
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if (filled)
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oldpen = SelectObject (hdc, GetStockObject (NULL_PEN));
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else
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oldbrush = SelectObject (hdc, GetStockObject (HOLLOW_BRUSH));
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if (!Rectangle (hdc, x, y, x+width+1, y+height+1))
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g_warning ("gdk_draw_rectangle: Rectangle failed");
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if (filled)
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SelectObject (hdc, oldpen);
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else
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SelectObject (hdc, oldbrush);
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gdk_gc_postdraw (drawable_private, gc_private);
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}
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void
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gdk_draw_arc (GdkDrawable *drawable,
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GdkGC *gc,
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gint filled,
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gint x,
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gint y,
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gint width,
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gint height,
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gint angle1,
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gint angle2)
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{
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GdkWindowPrivate *drawable_private;
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GdkGCPrivate *gc_private;
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HDC hdc;
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int nXStartArc, nYStartArc, nXEndArc, nYEndArc;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (gc != NULL);
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drawable_private = (GdkWindowPrivate*) drawable;
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if (drawable_private->destroyed)
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return;
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gc_private = (GdkGCPrivate*) gc;
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if (width == -1)
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width = drawable_private->width;
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if (height == -1)
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height = drawable_private->height;
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GDK_NOTE (MISC, g_print ("gdk_draw_arc: %#x %d,%d,%d,%d %d %d\n",
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drawable_private->xwindow,
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x, y, width, height, angle1, angle2));
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if (width != 0 && height != 0 && angle2 != 0)
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{
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hdc = gdk_gc_predraw (drawable_private, gc_private);
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if (angle2 >= 360*64)
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{
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nXStartArc = nYStartArc = nXEndArc = nYEndArc = 0;
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}
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else if (angle2 > 0)
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{
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/* The 100. is just an arbitrary value */
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nXStartArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
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nYStartArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
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nXEndArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
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nYEndArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
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}
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else
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{
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nXEndArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
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nYEndArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
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nXStartArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
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nYStartArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
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}
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if (filled)
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{
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GDK_NOTE (MISC, g_print ("...Pie(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
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x, y, x+width, y+height,
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nXStartArc, nYStartArc,
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nXEndArc, nYEndArc));
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Pie (hdc, x, y, x+width, y+height,
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nXStartArc, nYStartArc, nXEndArc, nYEndArc);
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}
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else
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{
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GDK_NOTE (MISC, g_print ("...Arc(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
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x, y, x+width, y+height,
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nXStartArc, nYStartArc,
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nXEndArc, nYEndArc));
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Arc (hdc, x, y, x+width, y+height,
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nXStartArc, nYStartArc, nXEndArc, nYEndArc);
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}
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gdk_gc_postdraw (drawable_private, gc_private);
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}
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}
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void
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gdk_draw_polygon (GdkDrawable *drawable,
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GdkGC *gc,
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gint filled,
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GdkPoint *points,
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gint npoints)
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{
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GdkWindowPrivate *drawable_private;
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GdkGCPrivate *gc_private;
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HDC hdc;
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POINT *pts;
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int i;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (gc != NULL);
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drawable_private = (GdkWindowPrivate*) drawable;
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if (drawable_private->destroyed)
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return;
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gc_private = (GdkGCPrivate*) gc;
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GDK_NOTE (MISC, g_print ("gdk_draw_polygon: %#x (%d) %d\n",
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drawable_private->xwindow, gc_private,
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npoints));
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if (npoints < 2)
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return;
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hdc = gdk_gc_predraw (drawable_private, gc_private);
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pts = g_malloc ((npoints+1) * sizeof (POINT));
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for (i = 0; i < npoints; i++)
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{
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pts[i].x = points[i].x;
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pts[i].y = points[i].y;
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}
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if ((points[0].x != points[npoints-1].x) ||
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(points[0].y != points[npoints-1].y))
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{
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pts[npoints].x = points[0].x;
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pts[npoints].y = points[0].y;
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npoints++;
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}
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if (filled)
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{
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if (!Polygon (hdc, pts, npoints))
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g_warning ("gdk_draw_polygon: Polygon failed");
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}
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else
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{
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if (!Polyline (hdc, pts, npoints))
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g_warning ("gdk_draw_polygon: Polyline failed");
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}
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g_free (pts);
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gdk_gc_postdraw (drawable_private, gc_private);
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}
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/* gdk_draw_string
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*/
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void
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gdk_draw_string (GdkDrawable *drawable,
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GdkFont *font,
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GdkGC *gc,
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gint x,
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gint y,
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const gchar *string)
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{
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gdk_draw_text (drawable, font, gc, x, y, string, strlen (string));
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}
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/* gdk_draw_text
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*
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* Modified by Li-Da Lho to draw 16 bits and Multibyte strings
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*
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* Interface changed: add "GdkFont *font" to specify font or fontset explicitely
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*/
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void
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gdk_draw_text (GdkDrawable *drawable,
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GdkFont *font,
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GdkGC *gc,
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gint x,
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gint y,
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const gchar *text,
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gint text_length)
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{
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GdkWindowPrivate *drawable_private;
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GdkFontPrivate *font_private;
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GdkGCPrivate *gc_private;
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HDC hdc;
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HFONT xfont;
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HGDIOBJ oldfont;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (font != NULL);
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g_return_if_fail (gc != NULL);
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g_return_if_fail (text != NULL);
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drawable_private = (GdkWindowPrivate*) drawable;
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if (drawable_private->destroyed)
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return;
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gc_private = (GdkGCPrivate*) gc;
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font_private = (GdkFontPrivate*) font;
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if (font->type == GDK_FONT_FONT)
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{
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hdc = gdk_gc_predraw (drawable_private, gc_private);
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xfont = (HFONT) font_private->xfont;
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GDK_NOTE (MISC, g_print ("gdk_draw_text: %#x (%d) %#x "
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"+%d+%d font: %#x \"%.*s\" length: %d\n",
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drawable_private->xwindow,
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gc_private, gc_private->xgc,
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x, y, xfont,
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(text_length > 10 ? 10 : text_length),
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text, text_length));
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if ((oldfont = SelectObject (hdc, xfont)) == NULL)
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g_warning ("gdk_draw_text: SelectObject failed");
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if (!TextOutA (hdc, x, y, text, text_length))
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g_warning ("gdk_draw_text: TextOutA failed");
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SelectObject (hdc, oldfont);
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gdk_gc_postdraw (drawable_private, gc_private);
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}
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else
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g_error ("undefined font type");
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}
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void
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gdk_draw_text_wc (GdkDrawable *drawable,
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GdkFont *font,
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GdkGC *gc,
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gint x,
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gint y,
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const GdkWChar *text,
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gint text_length)
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{
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GdkWindowPrivate *drawable_private;
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GdkFontPrivate *font_private;
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GdkGCPrivate *gc_private;
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gint i;
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wchar_t *wcstr;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (font != NULL);
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g_return_if_fail (gc != NULL);
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g_return_if_fail (text != NULL);
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drawable_private = (GdkWindowPrivate*) drawable;
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if (drawable_private->destroyed)
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return;
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gc_private = (GdkGCPrivate*) gc;
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font_private = (GdkFontPrivate*) font;
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if (font->type == GDK_FONT_FONT)
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{
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HDC hdc;
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HFONT xfont;
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HGDIOBJ oldfont;
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hdc = gdk_gc_predraw (drawable_private, gc_private);
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xfont = (HFONT) font_private->xfont;
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GDK_NOTE (MISC, g_print ("gdk_draw_text_wc: %#x (%d) %#x "
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"+%d+%d font: %#x length: %d\n",
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drawable_private->xwindow,
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gc_private, gc_private->xgc,
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x, y, xfont,
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text_length));
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if ((oldfont = SelectObject (hdc, xfont)) == NULL)
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g_warning ("gdk_draw_text: SelectObject failed");
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wcstr = g_new (wchar_t, text_length);
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for (i = 0; i < text_length; i++)
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wcstr[i] = text[i];
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if (!TextOutW (hdc, x, y, wcstr, text_length))
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g_warning ("gdk_draw_text: TextOutW failed");
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g_free (wcstr);
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SelectObject (hdc, oldfont);
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gdk_gc_postdraw (drawable_private, gc_private);
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}
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else
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g_error ("undefined font type");
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}
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void
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gdk_draw_pixmap (GdkDrawable *drawable,
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GdkGC *gc,
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GdkPixmap *src,
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gint xsrc,
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gint ysrc,
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gint xdest,
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gint ydest,
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gint width,
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gint height)
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{
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GdkWindowPrivate *drawable_private;
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GdkWindowPrivate *src_private;
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GdkGCPrivate *gc_private;
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HDC hdc;
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HDC srcdc;
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HGDIOBJ hgdiobj;
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HRGN src_rgn, draw_rgn, outside_rgn;
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RECT r;
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g_return_if_fail (drawable != NULL);
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g_return_if_fail (src != NULL);
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g_return_if_fail (gc != NULL);
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drawable_private = (GdkWindowPrivate*) drawable;
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src_private = (GdkWindowPrivate*) src;
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if (drawable_private->destroyed || src_private->destroyed)
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return;
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gc_private = (GdkGCPrivate*) gc;
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if (width == -1)
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width = src_private->width; /* Or should we subtract xsrc? */
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if (height == -1)
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height = src_private->height; /* Ditto? */
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GDK_NOTE (MISC, g_print ("gdk_draw_pixmap: dest: %#x "
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"src: %#x %dx%d@+%d+%d"
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" dest: %#x @+%d+%d\n",
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drawable_private->xwindow,
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src_private->xwindow,
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width, height, xsrc, ysrc,
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drawable_private->xwindow, xdest, ydest));
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hdc = gdk_gc_predraw (drawable_private, gc_private);
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src_rgn = CreateRectRgn (0, 0, src_private->width + 1, src_private->height + 1);
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draw_rgn = CreateRectRgn (xsrc, ysrc, xsrc + width + 1, ysrc + height + 1);
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SetRectEmpty (&r);
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outside_rgn = CreateRectRgnIndirect (&r);
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|
|
if (drawable_private->window_type != GDK_WINDOW_PIXMAP)
|
|
{
|
|
/* If we are drawing on a window, calculate the region that is
|
|
* outside the source pixmap, and invalidate that, causing it to
|
|
* be cleared. XXX
|
|
*/
|
|
if (CombineRgn (outside_rgn, draw_rgn, src_rgn, RGN_DIFF) != NULLREGION)
|
|
{
|
|
OffsetRgn (outside_rgn, xdest, ydest);
|
|
GDK_NOTE (MISC, (GetRgnBox (outside_rgn, &r),
|
|
g_print ("...calling InvalidateRgn, "
|
|
"bbox: %dx%d@+%d+%d\n",
|
|
r.right - r.left - 1, r.bottom - r.top - 1,
|
|
r.left, r.top)));
|
|
InvalidateRgn (drawable_private->xwindow, outside_rgn, TRUE);
|
|
}
|
|
}
|
|
|
|
#if 1 /* Don't know if this is necessary */
|
|
if (CombineRgn (draw_rgn, draw_rgn, src_rgn, RGN_AND) == COMPLEXREGION)
|
|
g_warning ("gdk_draw_pixmap: CombineRgn returned a COMPLEXREGION");
|
|
|
|
GetRgnBox (draw_rgn, &r);
|
|
if (r.left != xsrc
|
|
|| r.top != ysrc
|
|
|| r.right != xsrc + width + 1
|
|
|| r.bottom != ysrc + height + 1)
|
|
{
|
|
xdest += r.left - xsrc;
|
|
xsrc = r.left;
|
|
ydest += r.top - ysrc;
|
|
ysrc = r.top;
|
|
width = r.right - xsrc - 1;
|
|
height = r.bottom - ysrc - 1;
|
|
|
|
GDK_NOTE (MISC, g_print ("... restricted to src: %dx%d@+%d+%d, "
|
|
"dest: @+%d+%d\n",
|
|
width, height, xsrc, ysrc,
|
|
xdest, ydest));
|
|
}
|
|
#endif
|
|
|
|
DeleteObject (src_rgn);
|
|
DeleteObject (draw_rgn);
|
|
DeleteObject (outside_rgn);
|
|
|
|
/* Strangely enough, this function is called also to bitblt
|
|
* from a window.
|
|
*/
|
|
if (src_private->window_type == GDK_WINDOW_PIXMAP)
|
|
{
|
|
if ((srcdc = CreateCompatibleDC (hdc)) == NULL)
|
|
g_warning ("gdk_draw_pixmap: CreateCompatibleDC failed");
|
|
|
|
if ((hgdiobj = SelectObject (srcdc, src_private->xwindow)) == NULL)
|
|
g_warning ("gdk_draw_pixmap: SelectObject #1 failed");
|
|
|
|
if (!BitBlt (hdc, xdest, ydest, width, height,
|
|
srcdc, xsrc, ysrc, SRCCOPY))
|
|
g_warning ("gdk_draw_pixmap: BitBlt failed");
|
|
|
|
if ((SelectObject (srcdc, hgdiobj) == NULL))
|
|
g_warning ("gdk_draw_pixmap: SelectObject #2 failed");
|
|
|
|
if (!DeleteDC (srcdc))
|
|
g_warning ("gdk_draw_pixmap: DeleteDC failed");
|
|
}
|
|
else
|
|
{
|
|
if ((srcdc = GetDC (src_private->xwindow)) == NULL)
|
|
g_warning ("gdk_draw_pixmap: GetDC failed");
|
|
|
|
#if 0
|
|
if (!BitBlt (hdc, xdest, ydest, width, height,
|
|
srcdc, xsrc, ysrc, SRCCOPY))
|
|
g_warning ("gdk_draw_pixmap: BitBlt failed");
|
|
#else
|
|
/* If we are in fact just blitting inside one window,
|
|
* ScrollWindowEx works better.
|
|
* Thanks to Philippe Colantoni <colanton@aris.ss.uci.edu>
|
|
* for noticing and fixing this.
|
|
*/
|
|
if (drawable_private->xwindow==src_private->xwindow)
|
|
{
|
|
if (!ScrollWindowEx (drawable_private->xwindow,-xsrc+xdest, -ysrc+ydest, NULL,
|
|
NULL, NULL, NULL, SW_INVALIDATE))
|
|
g_warning ("gdk_draw_pixmap: ScrollWindowEx failed");
|
|
|
|
if (!UpdateWindow (drawable_private->xwindow))
|
|
g_warning ("gdk_draw_pixmap: UpdateWindow failed");
|
|
}
|
|
else
|
|
if (!BitBlt (hdc, xdest, ydest, width, height,
|
|
srcdc, xsrc, ysrc, SRCCOPY))
|
|
g_warning ("gdk_draw_pixmap: BitBlt failed");
|
|
#endif
|
|
|
|
ReleaseDC (src_private->xwindow, srcdc);
|
|
}
|
|
gdk_gc_postdraw (drawable_private, gc_private);
|
|
}
|
|
|
|
void
|
|
gdk_draw_image (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkImage *image,
|
|
gint xsrc,
|
|
gint ysrc,
|
|
gint xdest,
|
|
gint ydest,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
GdkImagePrivate *image_private;
|
|
|
|
g_return_if_fail (drawable != NULL);
|
|
g_return_if_fail (image != NULL);
|
|
g_return_if_fail (gc != NULL);
|
|
|
|
image_private = (GdkImagePrivate*) image;
|
|
|
|
g_return_if_fail (image_private->image_put != NULL);
|
|
|
|
if (width == -1)
|
|
width = image->width;
|
|
if (height == -1)
|
|
height = image->height;
|
|
|
|
(* image_private->image_put) (drawable, gc, image, xsrc, ysrc,
|
|
xdest, ydest, width, height);
|
|
}
|
|
|
|
void
|
|
gdk_draw_points (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkPoint *points,
|
|
gint npoints)
|
|
{
|
|
GdkWindowPrivate *drawable_private;
|
|
GdkGCPrivate *gc_private;
|
|
HDC hdc;
|
|
int i;
|
|
|
|
g_return_if_fail (drawable != NULL);
|
|
g_return_if_fail ((points != NULL) && (npoints > 0));
|
|
g_return_if_fail (gc != NULL);
|
|
|
|
drawable_private = (GdkWindowPrivate*) drawable;
|
|
if (drawable_private->destroyed)
|
|
return;
|
|
gc_private = (GdkGCPrivate*) gc;
|
|
|
|
hdc = gdk_gc_predraw (drawable_private, gc_private);
|
|
|
|
GDK_NOTE (MISC, g_print ("gdk_draw_points: %#x destdc: (%d) %#x "
|
|
"npoints: %d\n",
|
|
drawable_private->xwindow, gc_private, hdc,
|
|
npoints));
|
|
|
|
for (i = 0; i < npoints; i++)
|
|
{
|
|
if (!MoveToEx (hdc, points[i].x, points[i].y, NULL))
|
|
g_warning ("gdk_draw_points: MoveToEx failed");
|
|
if (!LineTo (hdc, points[i].x + 1, points[i].y))
|
|
g_warning ("gdk_draw_points: LineTo failed");
|
|
}
|
|
gdk_gc_postdraw (drawable_private, gc_private);
|
|
}
|
|
|
|
void
|
|
gdk_draw_segments (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkSegment *segs,
|
|
gint nsegs)
|
|
{
|
|
GdkWindowPrivate *drawable_private;
|
|
GdkGCPrivate *gc_private;
|
|
HDC hdc;
|
|
int i;
|
|
|
|
if (nsegs <= 0)
|
|
return;
|
|
|
|
g_return_if_fail (drawable != NULL);
|
|
g_return_if_fail (segs != NULL);
|
|
g_return_if_fail (gc != NULL);
|
|
|
|
drawable_private = (GdkWindowPrivate*) drawable;
|
|
if (drawable_private->destroyed)
|
|
return;
|
|
gc_private = (GdkGCPrivate*) gc;
|
|
|
|
hdc = gdk_gc_predraw (drawable_private, gc_private);
|
|
|
|
for (i = 0; i < nsegs; i++)
|
|
{
|
|
if (!MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
|
|
g_warning ("gdk_draw_segments: MoveToEx failed");
|
|
if (!LineTo (hdc, segs[i].x2, segs[i].y2))
|
|
g_warning ("gdk_draw_segments: LineTo #1 failed");
|
|
|
|
/* Draw end pixel */
|
|
if (gc_private->pen_width == 1)
|
|
if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
|
|
g_warning ("gdk_draw_segments: LineTo #2 failed");
|
|
}
|
|
gdk_gc_postdraw (drawable_private, gc_private);
|
|
}
|
|
|
|
void
|
|
gdk_draw_lines (GdkDrawable *drawable,
|
|
GdkGC *gc,
|
|
GdkPoint *points,
|
|
gint npoints)
|
|
{
|
|
GdkWindowPrivate *drawable_private;
|
|
GdkGCPrivate *gc_private;
|
|
HDC hdc;
|
|
POINT *pts;
|
|
int i;
|
|
|
|
if (npoints < 2)
|
|
return;
|
|
|
|
g_return_if_fail (drawable != NULL);
|
|
g_return_if_fail (points != NULL);
|
|
g_return_if_fail (gc != NULL);
|
|
|
|
drawable_private = (GdkWindowPrivate*) drawable;
|
|
gc_private = (GdkGCPrivate*) gc;
|
|
|
|
hdc = gdk_gc_predraw (drawable_private, gc_private);
|
|
#if 1
|
|
pts = g_malloc (npoints * sizeof (POINT));
|
|
|
|
for (i = 0; i < npoints; i++)
|
|
{
|
|
pts[i].x = points[i].x;
|
|
pts[i].y = points[i].y;
|
|
}
|
|
|
|
if (!Polyline (hdc, pts, npoints))
|
|
g_warning ("gdk_draw_lines: Polyline(,,%d) failed", npoints);
|
|
|
|
g_free (pts);
|
|
|
|
/* Draw end pixel */
|
|
if (gc_private->pen_width == 1)
|
|
{
|
|
MoveToEx (hdc, points[npoints-1].x, points[npoints-1].y, NULL);
|
|
if (!LineTo (hdc, points[npoints-1].x + 1, points[npoints-1].y))
|
|
g_warning ("gdk_draw_lines: LineTo failed");
|
|
}
|
|
#else
|
|
MoveToEx (hdc, points[0].x, points[0].y, NULL);
|
|
for (i = 1; i < npoints; i++)
|
|
if (!LineTo (hdc, points[i].x, points[i].y))
|
|
g_warning ("gdk_draw_lines: LineTo #1 failed");
|
|
|
|
/* Draw end pixel */
|
|
if (gc_private->pen_width == 1)
|
|
if (!LineTo (hdc, points[npoints-1].x + 1, points[npoints-1].y))
|
|
g_warning ("gdk_draw_lines: LineTo #2 failed");
|
|
#endif
|
|
gdk_gc_postdraw (drawable_private, gc_private);
|
|
}
|