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gtk2/gdk/win32/gdkdrawable-win32.c
Hans Breuer fe60d43a26 Fixed dashed line issues (#74441) to an IMO reasonable extend. That is: 
2002-03-29  Hans Breuer  <hans@breuer.org>

	Fixed dashed line issues (#74441) to an IMO reasonable extend.
	That is: use PS_USERSTYLE on WinNT (the next GDI limit appears
	to be with lines width > 50); Render horizontal and vertical
	dashed lines on Win9x 'by hand'. Dotted selection rectangles
	and Dia look nice ...

	* gdk/win32/gdkprivate-win32.h : add pen_dashes pointer and
	num_pen_dashes to _GdkGCWin32
	* gdk/win32/gdkgc-win32.c : initialize pen_dashes and remove
	the guesses from dashes to windoze line styles.
	(predraw_set_forground) : always ExtCreatePen (PS_SOLID) on
	Win9x, which does not support PS_USERSTYLE.
	* gdk/win32/gdkdrawable-win32.c : new functions render_line_
	<horizontal|vertical>. Use them if not running on NT in
	gdk_win32_draw_<rectangle|segments|lines> ()

	* gdk/win32/gdkkeys-win32.c (gdk_keyval_name) : return NULL
	for keyval == 0 to avoid to have zeros in all menu entries
	without accelerator.
2002-03-28 23:25:33 +00:00

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 1998-2002 Tor Lillqvist
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include <math.h>
#include <stdio.h>
#include <glib.h>
#include <pango/pangowin32.h>
#include "gdkprivate-win32.h"
static void gdk_win32_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height);
static void gdk_win32_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2);
static void gdk_win32_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
GdkPoint *points,
gint npoints);
static void gdk_win32_draw_text (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const gchar *text,
gint text_length);
static void gdk_win32_draw_text_wc (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const GdkWChar *text,
gint text_length);
static void gdk_win32_draw_drawable (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
static void gdk_win32_draw_points (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
static void gdk_win32_draw_segments (GdkDrawable *drawable,
GdkGC *gc,
GdkSegment *segs,
gint nsegs);
static void gdk_win32_draw_lines (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
static void gdk_win32_draw_glyphs (GdkDrawable *drawable,
GdkGC *gc,
PangoFont *font,
gint x,
gint y,
PangoGlyphString *glyphs);
static void gdk_win32_draw_image (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
static void gdk_win32_set_colormap (GdkDrawable *drawable,
GdkColormap *colormap);
static GdkColormap* gdk_win32_get_colormap (GdkDrawable *drawable);
static gint gdk_win32_get_depth (GdkDrawable *drawable);
static GdkVisual* gdk_win32_get_visual (GdkDrawable *drawable);
static void gdk_drawable_impl_win32_class_init (GdkDrawableImplWin32Class *klass);
static void gdk_drawable_impl_win32_finalize (GObject *object);
static gpointer parent_class = NULL;
#ifdef G_ENABLE_DEBUG
gchar *
gdk_win32_drawable_description (GdkDrawable *d)
{
GdkVisual *v;
static gchar buf[1000];
static gchar *bufp = buf;
gchar *msg;
gint width, height;
gchar *retval;
gdk_drawable_get_size (d, &width, &height);
msg = g_strdup_printf
("%s:%p:%dx%dx%d",
G_OBJECT_TYPE_NAME (d),
GDK_DRAWABLE_HANDLE (d),
width, height,
(GDK_IS_PIXMAP (d) ? GDK_PIXMAP_IMPL_WIN32 (GDK_PIXMAP_OBJECT (d)->impl)->image->depth
: ((v = gdk_drawable_get_visual (d)) ? v->depth : gdk_visual_get_system ()->depth)));
if (bufp + strlen (msg) + 1 > buf + sizeof (buf))
bufp = buf;
retval = bufp;
strcpy (bufp, msg);
bufp += strlen (msg) + 1;
g_free (msg);
return retval;
}
#endif
GType
gdk_drawable_impl_win32_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (GdkDrawableImplWin32Class),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_drawable_impl_win32_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkDrawableImplWin32),
0, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
object_type = g_type_register_static (GDK_TYPE_DRAWABLE,
"GdkDrawableImplWin32",
&object_info, 0);
}
return object_type;
}
static void
gdk_drawable_impl_win32_class_init (GdkDrawableImplWin32Class *klass)
{
GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gdk_drawable_impl_win32_finalize;
drawable_class->create_gc = _gdk_win32_gc_new;
drawable_class->draw_rectangle = gdk_win32_draw_rectangle;
drawable_class->draw_arc = gdk_win32_draw_arc;
drawable_class->draw_polygon = gdk_win32_draw_polygon;
drawable_class->draw_text = gdk_win32_draw_text;
drawable_class->draw_text_wc = gdk_win32_draw_text_wc;
drawable_class->draw_drawable = gdk_win32_draw_drawable;
drawable_class->draw_points = gdk_win32_draw_points;
drawable_class->draw_segments = gdk_win32_draw_segments;
drawable_class->draw_lines = gdk_win32_draw_lines;
drawable_class->draw_glyphs = gdk_win32_draw_glyphs;
drawable_class->draw_image = gdk_win32_draw_image;
drawable_class->set_colormap = gdk_win32_set_colormap;
drawable_class->get_colormap = gdk_win32_get_colormap;
drawable_class->get_depth = gdk_win32_get_depth;
drawable_class->get_visual = gdk_win32_get_visual;
drawable_class->_copy_to_image = _gdk_win32_copy_to_image;
}
static void
gdk_drawable_impl_win32_finalize (GObject *object)
{
gdk_drawable_set_colormap (GDK_DRAWABLE (object), NULL);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
/*****************************************************
* Win32 specific implementations of generic functions *
*****************************************************/
static GdkColormap*
gdk_win32_get_colormap (GdkDrawable *drawable)
{
return GDK_DRAWABLE_IMPL_WIN32 (drawable)->colormap;
}
static void
gdk_win32_set_colormap (GdkDrawable *drawable,
GdkColormap *colormap)
{
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
if (impl->colormap == colormap)
return;
if (impl->colormap)
gdk_colormap_unref (impl->colormap);
impl->colormap = colormap;
if (impl->colormap)
gdk_colormap_ref (impl->colormap);
}
/* Drawing
*/
/*
* Render a dashed line 'by hand' cause the Win9x GDI is
* too limited to do so
*/
static inline gboolean
render_line_horizontal (HDC hdc,
int x1,
int x2,
int y,
int pen_width,
int *dashes,
int num_dashes)
{
int n;
for (n = 0; x1 < x2; n++)
{
int len = dashes[n % num_dashes];
if (x1 + len > x2)
len = x2 - x1;
if (n % 2 == 0)
if (!PatBlt (hdc,
x1, y - pen_width / 2,
len, pen_width,
PATCOPY))
{
WIN32_GDI_FAILED ("PatBlt");
return FALSE;
}
x1 += dashes[n % num_dashes];
}
}
static inline gboolean
render_line_vertical (HDC hdc,
int x,
int y1,
int y2,
int pen_width,
int *dashes,
int num_dashes)
{
int n;
for (n = 0; y1 < y2; n++)
{
int len = dashes[n % num_dashes];
if (y1 + len > y2)
len = y2 - y1;
if (n % 2 == 0)
if (!PatBlt (hdc,
x - pen_width / 2, y1,
pen_width, len,
PATCOPY))
{
WIN32_GDI_FAILED ("PatBlt");
return FALSE;
}
y1 += dashes[n % num_dashes];
}
}
static void
gdk_win32_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height)
{
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
HGDIOBJ old_pen_or_brush;
POINT pts[4];
gboolean ok = TRUE;
GDK_NOTE (MISC, g_print ("gdk_win32_draw_rectangle: %s (%p) %s%dx%d@+%d+%d\n",
gdk_win32_drawable_description (drawable),
gc_private,
(filled ? "fill " : ""),
width, height, x, y));
if (filled
&& (gc_private->tile)
&& (gc_private->values_mask & GDK_GC_TILE)
&& (gc_private->values_mask & GDK_GC_FILL))
{
_gdk_win32_draw_tiles (drawable, gc, gc_private->tile, x, y, width, height);
return;
}
hdc = gdk_win32_hdc_get (drawable, gc, mask);
#if 0
{
HBRUSH hbr = GetCurrentObject (hdc, OBJ_BRUSH);
HPEN hpen = GetCurrentObject (hdc, OBJ_PEN);
LOGBRUSH lbr;
LOGPEN lpen;
GetObject (hbr, sizeof (lbr), &lbr);
GetObject (hpen, sizeof (lpen), &lpen);
g_print ("current brush: style = %s, color = 0x%.08x\n",
(lbr.lbStyle == BS_SOLID ? "SOLID" : "???"),
lbr.lbColor);
g_print ("current pen: style = %s, width = %d, color = 0x%.08x\n",
(lpen.lopnStyle == PS_SOLID ? "SOLID" : "???"),
lpen.lopnWidth,
lpen.lopnColor);
}
#endif
if (gc_private->fill_style == GDK_OPAQUE_STIPPLED)
{
if (!BeginPath (hdc))
WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
/* Win9x doesn't support Rectangle calls in a path,
* thus use Polyline.
*/
pts[0].x = x;
pts[0].y = y;
pts[1].x = x + width + 1;
pts[1].y = y;
pts[2].x = x + width + 1;
pts[2].y = y + height + 1;
pts[3].x = x;
pts[3].y = y + height + 1;
if (ok)
MoveToEx (hdc, x, y, NULL);
if (ok && !Polyline (hdc, pts, 4))
WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
if (ok && !CloseFigure (hdc))
WIN32_GDI_FAILED ("CloseFigure"), ok = FALSE;
if (ok && !EndPath (hdc))
WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
if (ok && !filled)
if (!WidenPath (hdc))
WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
if (ok && !FillPath (hdc))
WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
}
else
{
if (!filled && gc_private->pen_dashes && !IS_WIN_NT ())
{
ok = ok && render_line_vertical (hdc, x, y, y+height+1,
gc_private->pen_width,
gc_private->pen_dashes,
gc_private->pen_num_dashes);
ok = ok && render_line_horizontal (hdc, x, x+width+1, y,
gc_private->pen_width,
gc_private->pen_dashes,
gc_private->pen_num_dashes);
ok = ok && render_line_vertical (hdc, x+width+1, y, y+height+1,
gc_private->pen_width,
gc_private->pen_dashes,
gc_private->pen_num_dashes);
ok = ok && render_line_horizontal (hdc, x, x+width+1, y+height+1,
gc_private->pen_width,
gc_private->pen_dashes,
gc_private->pen_num_dashes);
}
else
{
if (filled)
old_pen_or_brush = SelectObject (hdc, GetStockObject (NULL_PEN));
else
old_pen_or_brush = SelectObject (hdc, GetStockObject (HOLLOW_BRUSH));
if (old_pen_or_brush == NULL)
WIN32_GDI_FAILED ("SelectObject");
if (!Rectangle (hdc, x, y, x+width+1, y+height+1))
WIN32_GDI_FAILED ("Rectangle");
if (old_pen_or_brush)
SelectObject (hdc, old_pen_or_brush);
}
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2)
{
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
int nXStartArc, nYStartArc, nXEndArc, nYEndArc;
GDK_NOTE (MISC, g_print ("gdk_draw_arc: %s %d,%d,%d,%d %d %d\n",
gdk_win32_drawable_description (drawable),
x, y, width, height, angle1, angle2));
/* Seems that drawing arcs with width or height <= 2 fails, at least
* with my TNT card.
*/
if (width <= 2 || height <= 2 || angle2 == 0)
return;
hdc = gdk_win32_hdc_get (drawable, gc, mask);
if (angle2 >= 360*64)
{
nXStartArc = nYStartArc = nXEndArc = nYEndArc = 0;
}
else if (angle2 > 0)
{
/* The 100. is just an arbitrary value */
nXStartArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
nYStartArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
nXEndArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
nYEndArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
}
else
{
nXEndArc = x + width/2 + 100. * cos(angle1/64.*2.*G_PI/360.);
nYEndArc = y + height/2 + -100. * sin(angle1/64.*2.*G_PI/360.);
nXStartArc = x + width/2 + 100. * cos((angle1+angle2)/64.*2.*G_PI/360.);
nYStartArc = y + height/2 + -100. * sin((angle1+angle2)/64.*2.*G_PI/360.);
}
/* GDK_OPAQUE_STIPPLED arcs not implemented. */
if (filled)
{
GDK_NOTE (MISC, g_print ("...Pie(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
x, y, x+width, y+height,
nXStartArc, nYStartArc,
nXEndArc, nYEndArc));
if (!Pie (hdc, x, y, x+width, y+height,
nXStartArc, nYStartArc, nXEndArc, nYEndArc))
WIN32_GDI_FAILED ("Pie");
}
else
{
GDK_NOTE (MISC, g_print ("...Arc(hdc,%d,%d,%d,%d,%d,%d,%d,%d)\n",
x, y, x+width, y+height,
nXStartArc, nYStartArc,
nXEndArc, nYEndArc));
if (!Arc (hdc, x, y, x+width, y+height,
nXStartArc, nYStartArc, nXEndArc, nYEndArc))
WIN32_GDI_FAILED ("Arc");
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
GdkPoint *points,
gint npoints)
{
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
POINT *pts;
gboolean ok = TRUE;
int i;
GDK_NOTE (MISC, g_print ("gdk_win32_draw_polygon: %s (%p) %d\n",
gdk_win32_drawable_description (drawable),
gc_private,
npoints));
if (npoints < 2)
return;
hdc = gdk_win32_hdc_get (drawable, gc, mask);
pts = g_new (POINT, npoints+1);
for (i = 0; i < npoints; i++)
{
pts[i].x = points[i].x;
pts[i].y = points[i].y;
}
if (gc_private->fill_style == GDK_OPAQUE_STIPPLED)
{
if (!BeginPath (hdc))
WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
if (ok)
MoveToEx (hdc, points[0].x, points[0].y, NULL);
if (pts[0].x == pts[npoints-1].x && pts[0].y == pts[npoints-1].y)
npoints--;
if (ok && !Polyline (hdc, pts, 4))
WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
if (ok && !CloseFigure (hdc))
WIN32_GDI_FAILED ("CloseFigure"), ok = FALSE;
if (ok && !EndPath (hdc))
WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
if (ok && !filled)
if (!WidenPath (hdc))
WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
if (ok && !FillPath (hdc))
WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
}
else
{
if (points[0].x != points[npoints-1].x
|| points[0].y != points[npoints-1].y)
{
pts[npoints].x = points[0].x;
pts[npoints].y = points[0].y;
npoints++;
}
if (filled)
{
if (!Polygon (hdc, pts, npoints))
WIN32_GDI_FAILED ("Polygon");
}
else
{
if (!Polyline (hdc, pts, npoints))
WIN32_GDI_FAILED ("Polyline");
}
}
g_free (pts);
gdk_win32_hdc_release (drawable, gc, mask);
}
typedef struct
{
gint x, y;
HDC hdc;
} gdk_draw_text_arg;
static void
gdk_draw_text_handler (GdkWin32SingleFont *singlefont,
const wchar_t *wcstr,
int wclen,
void *arg)
{
HGDIOBJ oldfont;
SIZE size;
gdk_draw_text_arg *argp = (gdk_draw_text_arg *) arg;
if (!singlefont)
return;
if ((oldfont = SelectObject (argp->hdc, singlefont->hfont)) == NULL)
{
WIN32_GDI_FAILED ("SelectObject");
return;
}
if (!TextOutW (argp->hdc, argp->x, argp->y, wcstr, wclen))
WIN32_GDI_FAILED ("TextOutW");
GetTextExtentPoint32W (argp->hdc, wcstr, wclen, &size);
argp->x += size.cx;
SelectObject (argp->hdc, oldfont);
}
static void
gdk_win32_draw_text (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const gchar *text,
gint text_length)
{
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_FONT;
wchar_t *wcstr, wc;
gint wlen;
gdk_draw_text_arg arg;
if (text_length == 0)
return;
g_assert (font->type == GDK_FONT_FONT || font->type == GDK_FONT_FONTSET);
arg.x = x;
arg.y = y;
arg.hdc = gdk_win32_hdc_get (drawable, gc, mask);
GDK_NOTE (MISC, g_print ("gdk_draw_text: %s (%d,%d) \"%.*s\" (len %d)\n",
gdk_win32_drawable_description (drawable),
x, y,
(text_length > 10 ? 10 : text_length),
text, text_length));
if (text_length == 1)
{
/* For single characters, don't try to interpret as UTF-8. */
wc = (guchar) text[0];
_gdk_wchar_text_handle (font, &wc, 1, gdk_draw_text_handler, &arg);
}
else
{
wcstr = g_new (wchar_t, text_length);
if ((wlen = _gdk_utf8_to_ucs2 (wcstr, text, text_length, text_length)) == -1)
g_warning ("gdk_win32_draw_text: _gdk_utf8_to_ucs2 failed");
else
_gdk_wchar_text_handle (font, wcstr, wlen, gdk_draw_text_handler, &arg);
g_free (wcstr);
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_text_wc (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const GdkWChar *text,
gint text_length)
{
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_FONT;
gint i;
wchar_t *wcstr;
gdk_draw_text_arg arg;
if (text_length == 0)
return;
g_assert (font->type == GDK_FONT_FONT || font->type == GDK_FONT_FONTSET);
arg.x = x;
arg.y = y;
arg.hdc = gdk_win32_hdc_get (drawable, gc, mask);
GDK_NOTE (MISC, g_print ("gdk_draw_text_wc: %s (%d,%d) len: %d\n",
gdk_win32_drawable_description (drawable),
x, y, text_length));
if (sizeof (wchar_t) != sizeof (GdkWChar))
{
wcstr = g_new (wchar_t, text_length);
for (i = 0; i < text_length; i++)
wcstr[i] = text[i];
}
else
wcstr = (wchar_t *) text;
_gdk_wchar_text_handle (font, wcstr, text_length,
gdk_draw_text_handler, &arg);
if (sizeof (wchar_t) != sizeof (GdkWChar))
g_free (wcstr);
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_drawable (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
g_assert (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable));
_gdk_win32_blit (FALSE, (GdkDrawableImplWin32 *) drawable,
gc, src, xsrc, ysrc,
xdest, ydest, width, height);
}
void
_gdk_win32_draw_tiles (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *tile,
gint x_from,
gint y_from,
gint max_width,
gint max_height)
{
gint x = x_from, y = y_from;
gint tile_width, tile_height;
gint width, height;
GDK_NOTE (MISC, g_print ("_gdk_win32_draw_tiles: %s tile=%s +%d+%d %d,%d\n",
gdk_win32_drawable_description (drawable),
gdk_win32_drawable_description (tile),
x_from, y_from, max_width, max_height));
gdk_drawable_get_size (drawable, &width, &height);
gdk_drawable_get_size (tile, &tile_width, &tile_height);
width = MIN (width, max_width);
height = MIN (height, max_height);
tile_width = MIN (tile_width, max_width);
tile_height = MIN (tile_height, max_height);
while (y < height)
{
x = x_from;
while (x < width)
{
gdk_draw_drawable (drawable, gc, tile,
x % tile_width, /* xsrc */
y % tile_height, /* ysrc */
x, y, /* dest */
tile_width, tile_height);
x += tile_width;
}
y += tile_height;
}
}
static void
gdk_win32_draw_points (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints)
{
HDC hdc;
COLORREF fg;
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
int i;
hdc = gdk_win32_hdc_get (drawable, gc, 0);
fg = _gdk_win32_colormap_color (impl->colormap, gc_private->foreground);
GDK_NOTE (MISC, g_print ("gdk_draw_points: %s %dx%.06x\n",
gdk_win32_drawable_description (drawable),
npoints, (guint) fg));
for (i = 0; i < npoints; i++)
SetPixel (hdc, points[i].x, points[i].y, fg);
gdk_win32_hdc_release (drawable, gc, 0);
}
static void
gdk_win32_draw_segments (GdkDrawable *drawable,
GdkGC *gc,
GdkSegment *segs,
gint nsegs)
{
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
gboolean ok = TRUE;
int i;
GDK_NOTE (MISC, g_print ("gdk_win32_draw_segments: %s nsegs: %d\n",
gdk_win32_drawable_description (drawable), nsegs));
hdc = gdk_win32_hdc_get (drawable, gc, mask);
if (gc_private->fill_style == GDK_OPAQUE_STIPPLED)
{
if (!BeginPath (hdc))
WIN32_GDI_FAILED ("BeginPath"), ok = FALSE;
for (i = 0; ok && i < nsegs; i++)
{
if (ok && !MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
WIN32_GDI_FAILED ("MoveToEx"), ok = FALSE;
if (ok && !LineTo (hdc, segs[i].x2, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
/* Draw end pixel */
if (ok && gc_private->pen_width <= 1)
if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
}
if (ok && !EndPath (hdc))
WIN32_GDI_FAILED ("EndPath"), ok = FALSE;
if (ok && !WidenPath (hdc))
WIN32_GDI_FAILED ("WidenPath"), ok = FALSE;
if (ok && !FillPath (hdc))
WIN32_GDI_FAILED ("FillPath"), ok = FALSE;
}
else
{
if (gc_private->pen_dashes && !IS_WIN_NT ())
{
/* code very similar to the IMHO questionable optimization
* below. This one draws dashed vertical/horizontal lines
* with the limited Win9x GDI. --hb
*/
for (i = 0; ok && i < nsegs; i++)
{
if (segs[i].x1 == segs[i].x2)
{
int y1, y2;
if (segs[i].y1 <= segs[i].y2)
y1 = segs[i].y1, y2 = segs[i].y2;
else
y1 = segs[i].y2, y2 = segs[i].y1;
ok = render_line_vertical (hdc,
segs[i].x1, y1, y2,
gc_private->pen_width,
gc_private->pen_dashes,
gc_private->pen_num_dashes);
}
else if (segs[i].y1 == segs[i].y2)
{
int x1, x2;
if (segs[i].x1 <= segs[i].x2)
x1 = segs[i].x1, x2 = segs[i].x2;
else
x1 = segs[i].x2, x2 = segs[i].x1;
ok = render_line_horizontal (hdc,
x1, x2, segs[i].y1,
gc_private->pen_width,
gc_private->pen_dashes,
gc_private->pen_num_dashes);
}
else
{
if (!MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
WIN32_GDI_FAILED ("MoveToEx"), ok = FALSE;
if (ok && !LineTo (hdc, segs[i].x2, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
/* Draw end pixel */
if (ok && gc_private->pen_width <= 1)
if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
}
}
}
else
{
const gboolean maybe_patblt =
gc_private->rop2 == R2_COPYPEN &&
gc_private->pen_width <= 1 &&
(gc_private->pen_style & PS_STYLE_MASK) == PS_SOLID;
for (i = 0; ok && i < nsegs; i++)
{
/* PatBlt() is much faster than LineTo(), says
* jpe@archaeopteryx.com. Hmm. Use it if we have a solid
* colour pen, then we know that the brush is also solid and
* of the same colour.
*/
if (maybe_patblt && segs[i].x1 == segs[i].x2)
{
int y1, y2;
if (segs[i].y1 <= segs[i].y2)
y1 = segs[i].y1, y2 = segs[i].y2;
else
y1 = segs[i].y2, y2 = segs[i].y1;
if (!PatBlt (hdc, segs[i].x1, y1,
1, y2 - y1 + 1, PATCOPY))
WIN32_GDI_FAILED ("PatBlt"), ok = FALSE;
}
else if (maybe_patblt && segs[i].y1 == segs[i].y2)
{
int x1, x2;
if (segs[i].x1 <= segs[i].x2)
x1 = segs[i].x1, x2 = segs[i].x2;
else
x1 = segs[i].x2, x2 = segs[i].x1;
if (!PatBlt (hdc, x1, segs[i].y1,
x2 - x1 + 1, 1, PATCOPY))
WIN32_GDI_FAILED ("PatBlt"), ok = FALSE;
}
else
{
if (!MoveToEx (hdc, segs[i].x1, segs[i].y1, NULL))
WIN32_GDI_FAILED ("MoveToEx"), ok = FALSE;
if (ok && !LineTo (hdc, segs[i].x2, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
/* Draw end pixel */
if (ok && gc_private->pen_width <= 1)
if (!LineTo (hdc, segs[i].x2 + 1, segs[i].y2))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
}
}
}
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_lines (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints)
{
GdkGCWin32 *gc_private = GDK_GC_WIN32 (gc);
const GdkGCValuesMask mask = GDK_GC_FOREGROUND|GDK_GC_BACKGROUND;
HDC hdc;
POINT *pts;
int i;
gboolean ok = TRUE;
if (npoints < 2)
return;
hdc = gdk_win32_hdc_get (drawable, gc, mask);
if (gc_private->pen_dashes && !IS_WIN_NT ())
{
for (i = 0; i < npoints - 1; i++)
{
if (points[i].x == points[i+1].x)
{
int y1, y2;
if (points[i].y > points[i+1].y)
y1 = points[i+1].y, y2 = points[i].y;
else
y1 = points[i].y, y2 = points[i+1].y;
render_line_vertical (hdc, points[i].x, y1, y2,
gc_private->pen_width,
gc_private->pen_dashes,
gc_private->pen_num_dashes);
}
else if (points[i].y == points[i+1].y)
{
int x1, x2;
if (points[i].x > points[i+1].x)
x1 = points[i+1].x, x2 = points[i].x;
else
x1 = points[i].x, x2 = points[i+1].x;
render_line_horizontal (hdc, x1, x2, points[i].y,
gc_private->pen_width,
gc_private->pen_dashes,
gc_private->pen_num_dashes);
}
else
{
if (!MoveToEx (hdc, points[i].x, points[i].y, NULL))
WIN32_GDI_FAILED ("MoveToEx"), ok = FALSE;
if (ok && !LineTo (hdc, points[i+1].x, points[i+1].y))
WIN32_GDI_FAILED ("LineTo"), ok = FALSE;
}
}
}
else
{
pts = g_new (POINT, npoints);
for (i = 0; i < npoints; i++)
{
pts[i].x = points[i].x;
pts[i].y = points[i].y;
}
if (!Polyline (hdc, pts, npoints))
WIN32_GDI_FAILED ("Polyline"), ok = FALSE;
g_free (pts);
/* Draw end pixel */
if (ok && 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))
WIN32_GDI_FAILED ("LineTo");
}
}
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_glyphs (GdkDrawable *drawable,
GdkGC *gc,
PangoFont *font,
gint x,
gint y,
PangoGlyphString *glyphs)
{
const GdkGCValuesMask mask = GDK_GC_FOREGROUND;
HDC hdc;
hdc = gdk_win32_hdc_get (drawable, gc, mask);
/* HB: Maybe there should be a GDK_GC_PANGO flag for hdc_get */
/* default write mode is transparent (leave background) */
if (SetBkMode (hdc, TRANSPARENT) == 0)
WIN32_GDI_FAILED ("SetBkMode");
if (GDI_ERROR == SetTextAlign (hdc, TA_LEFT|TA_BASELINE|TA_NOUPDATECP))
WIN32_GDI_FAILED ("SetTextAlign");
pango_win32_render (hdc, font, glyphs, x, y);
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
blit_from_pixmap (gboolean use_fg_bg,
GdkDrawableImplWin32 *dest,
HDC hdc,
GdkPixmapImplWin32 *src,
GdkGCWin32 *gcwin32,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
HDC srcdc;
HBITMAP holdbitmap;
RGBQUAD oldtable[256], newtable[256];
COLORREF bg, fg;
gint newtable_size = 0, oldtable_size = 0;
gboolean ok = TRUE;
GDK_NOTE (MISC, g_print ("blit_from_pixmap\n"));
if (!(srcdc = CreateCompatibleDC (NULL)))
{
WIN32_GDI_FAILED ("CreateCompatibleDC");
return;
}
if (!(holdbitmap = SelectObject (srcdc, ((GdkDrawableImplWin32 *) src)->handle)))
WIN32_GDI_FAILED ("SelectObject");
else
{
if (src->image->depth <= 8)
{
/* Blitting from a 1, 4 or 8-bit pixmap */
if ((oldtable_size = GetDIBColorTable (srcdc, 0, 256, oldtable)) == 0)
WIN32_GDI_FAILED ("GetDIBColorTable");
else if (src->image->depth == 1)
{
/* Blitting from an 1-bit pixmap */
gint bgix, fgix;
if (use_fg_bg)
{
bgix = gcwin32->background;
fgix = gcwin32->foreground;
}
else
{
bgix = 0;
fgix = 1;
}
if (GDK_IS_PIXMAP_IMPL_WIN32 (dest) &&
((GdkPixmapImplWin32 *) dest)->image->depth <= 8)
{
/* Destination is also pixmap, get fg and bg from
* its palette. Either use the foreground and
* background pixel values in the GC (only in the
* case of gdk_image_put(), cf. XPutImage()), or 0
* and 1 to index the palette.
*/
if (!GetDIBColorTable (hdc, bgix, 1, newtable) ||
!GetDIBColorTable (hdc, fgix, 1, newtable+1))
WIN32_GDI_FAILED ("GetDIBColorTable"), ok = FALSE;
}
else
{
/* Destination is a window, get fg and bg from its
* colormap
*/
bg = _gdk_win32_colormap_color (dest->colormap, bgix);
fg = _gdk_win32_colormap_color (dest->colormap, fgix);
newtable[0].rgbBlue = GetBValue (bg);
newtable[0].rgbGreen = GetGValue (bg);
newtable[0].rgbRed = GetRValue (bg);
newtable[0].rgbReserved = 0;
newtable[1].rgbBlue = GetBValue (fg);
newtable[1].rgbGreen = GetGValue (fg);
newtable[1].rgbRed = GetRValue (fg);
newtable[1].rgbReserved = 0;
}
if (ok)
GDK_NOTE (MISC, g_print ("bg: %02x %02x %02x "
"fg: %02x %02x %02x\n",
newtable[0].rgbRed,
newtable[0].rgbGreen,
newtable[0].rgbBlue,
newtable[1].rgbRed,
newtable[1].rgbGreen,
newtable[1].rgbBlue));
newtable_size = 2;
}
else if (GDK_IS_PIXMAP_IMPL_WIN32 (dest))
{
/* Destination is pixmap, get its color table */
if ((newtable_size = GetDIBColorTable (hdc, 0, 256, newtable)) == 0)
WIN32_GDI_FAILED ("GetDIBColorTable"), ok = FALSE;
}
/* If blitting between pixmaps, set source's color table */
if (ok && newtable_size > 0)
{
GDK_NOTE (MISC_OR_COLORMAP,
g_print ("blit_from_pixmap: set color table"
" hdc=%p count=%d\n",
srcdc, newtable_size));
if (!SetDIBColorTable (srcdc, 0, newtable_size, newtable))
WIN32_GDI_FAILED ("SetDIBColorTable"), ok = FALSE;
}
}
if (ok && !BitBlt (hdc, xdest, ydest, width, height,
srcdc, xsrc, ysrc, SRCCOPY))
WIN32_GDI_FAILED ("BitBlt");
/* Restore source's color table if necessary */
if (ok && newtable_size > 0 && oldtable_size > 0)
{
GDK_NOTE (MISC_OR_COLORMAP,
g_print ("blit_from_pixmap: reset color table"
" hdc=%p count=%d\n",
srcdc, oldtable_size));
if (!SetDIBColorTable (srcdc, 0, oldtable_size, oldtable))
WIN32_GDI_FAILED ("SetDIBColorTable");
}
if (!SelectObject (srcdc, holdbitmap))
WIN32_GDI_FAILED ("SelectObject");
}
if (!DeleteDC (srcdc))
WIN32_GDI_FAILED ("DeleteDC");
}
static void
blit_inside_window (GdkDrawableImplWin32 *window,
HDC hdc,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
RECT scrollRect, clipRect, emptyRect;
HRGN updateRgn;
GDK_NOTE (MISC, g_print ("blit_inside_window\n"));
scrollRect.left = MIN (xsrc, xdest);
scrollRect.top = MIN (ysrc, ydest);
scrollRect.right = MAX (xsrc + width + 1, xdest + width + 1);
scrollRect.bottom = MAX (ysrc + height + 1, ydest + height + 1);
clipRect.left = xdest;
clipRect.top = ydest;
clipRect.right = xdest + width + 1;
clipRect.bottom = ydest + height + 1;
SetRectEmpty (&emptyRect);
updateRgn = CreateRectRgnIndirect (&emptyRect);
if (!ScrollDC (hdc, xdest - xsrc, ydest - ysrc,
&scrollRect, &clipRect,
updateRgn, NULL))
WIN32_GDI_FAILED ("ScrollDC");
else if (!InvalidateRgn (window->handle, updateRgn, FALSE))
WIN32_GDI_FAILED ("InvalidateRgn");
else if (!UpdateWindow (window->handle))
WIN32_GDI_FAILED ("UpdateWindow");
if (!DeleteObject (updateRgn))
WIN32_GDI_FAILED ("DeleteObject");
}
static void
blit_from_window (HDC hdc,
GdkDrawableImplWin32 *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
HDC srcdc;
HPALETTE holdpal = NULL;
GdkColormap *cmap = gdk_colormap_get_system ();
GDK_NOTE (MISC, g_print ("blit_from_window\n"));
if ((srcdc = GetDC (src->handle)) == NULL)
{
WIN32_GDI_FAILED ("GetDC");
return;
}
if (cmap->visual->type == GDK_VISUAL_PSEUDO_COLOR ||
cmap->visual->type == GDK_VISUAL_STATIC_COLOR)
{
gint k;
if (!(holdpal = SelectPalette (srcdc, GDK_WIN32_COLORMAP_DATA (cmap)->hpal, FALSE)))
WIN32_GDI_FAILED ("SelectPalette");
else if ((k = RealizePalette (srcdc)) == GDI_ERROR)
WIN32_GDI_FAILED ("RealizePalette");
else if (k > 0)
GDK_NOTE (MISC_OR_COLORMAP,
g_print ("blit_from_window: realized %d\n", k));
}
if (!BitBlt (hdc, xdest, ydest, width, height,
srcdc, xsrc, ysrc, SRCCOPY))
WIN32_GDI_FAILED ("BitBlt");
if (holdpal != NULL)
SelectPalette (srcdc, holdpal, FALSE);
if (!ReleaseDC (src->handle, srcdc))
WIN32_GDI_FAILED ("ReleaseDC");
}
void
_gdk_win32_blit (gboolean use_fg_bg,
GdkDrawableImplWin32 *drawable,
GdkGC *gc,
GdkDrawable *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
HDC hdc;
HRGN src_rgn, draw_rgn, outside_rgn;
RECT r;
GdkDrawableImplWin32 *draw_impl;
GdkDrawableImplWin32 *src_impl;
gint src_width, src_height;
GDK_NOTE (MISC, g_print ("_gdk_win32_blit: src:%s %dx%d@+%d+%d\n"
" dst:%s @+%d+%d use_fg_bg=%d\n",
gdk_win32_drawable_description (src),
width, height, xsrc, ysrc,
gdk_win32_drawable_description ((GdkDrawable *) drawable),
xdest, ydest,
use_fg_bg));
draw_impl = (GdkDrawableImplWin32 *) drawable;
if (GDK_IS_DRAWABLE_IMPL_WIN32 (src))
src_impl = (GdkDrawableImplWin32 *) src;
else if (GDK_IS_WINDOW (src))
src_impl = (GdkDrawableImplWin32 *) GDK_WINDOW_OBJECT (src)->impl;
else if (GDK_IS_PIXMAP (src))
src_impl = (GdkDrawableImplWin32 *) GDK_PIXMAP_OBJECT (src)->impl;
else
g_assert_not_reached ();
hdc = gdk_win32_hdc_get ((GdkDrawable *) drawable, gc, GDK_GC_FOREGROUND);
gdk_drawable_get_size (src, &src_width, &src_height);
if ((src_rgn = CreateRectRgn (0, 0, src_width + 1, src_height + 1)) == NULL)
WIN32_GDI_FAILED ("CreateRectRgn");
else if ((draw_rgn = CreateRectRgn (xsrc, ysrc,
xsrc + width + 1,
ysrc + height + 1)) == NULL)
WIN32_GDI_FAILED ("CreateRectRgn");
else
{
if (GDK_IS_WINDOW_IMPL_WIN32 (draw_impl))
{
int comb;
/* If we are drawing on a window, calculate the region that is
* outside the source pixmap, and invalidate that, causing it to
* be cleared. Not completely sure whether this is always needed. XXX
*/
SetRectEmpty (&r);
outside_rgn = CreateRectRgnIndirect (&r);
if ((comb = CombineRgn (outside_rgn,
draw_rgn, src_rgn,
RGN_DIFF)) == ERROR)
WIN32_GDI_FAILED ("CombineRgn");
else if (comb != NULLREGION)
{
OffsetRgn (outside_rgn, xdest, ydest);
GDK_NOTE (MISC, (GetRgnBox (outside_rgn, &r),
g_print ("...calling InvalidateRgn, "
"bbox: %ldx%ld@+%ld+%ld\n",
r.right - r.left - 1, r.bottom - r.top - 1,
r.left, r.top)));
InvalidateRgn (draw_impl->handle, outside_rgn, TRUE);
}
DeleteObject (outside_rgn);
}
#if 1 /* Don't know if this is necessary XXX */
if (CombineRgn (draw_rgn, draw_rgn, src_rgn, RGN_AND) == COMPLEXREGION)
g_warning ("gdk_win32_blit: 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);
}
if (GDK_IS_PIXMAP_IMPL_WIN32 (src_impl))
blit_from_pixmap (use_fg_bg, draw_impl, hdc,
(GdkPixmapImplWin32 *) src_impl, GDK_GC_WIN32 (gc),
xsrc, ysrc, xdest, ydest, width, height);
else if (draw_impl->handle == src_impl->handle)
blit_inside_window (src_impl, hdc, xsrc, ysrc, xdest, ydest, width, height);
else
blit_from_window (hdc, src_impl, xsrc, ysrc, xdest, ydest, width, height);
gdk_win32_hdc_release ((GdkDrawable *) drawable, gc, GDK_GC_FOREGROUND);
}
static void
gdk_win32_draw_image (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
g_assert (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable));
_gdk_win32_blit (TRUE, (GdkDrawableImplWin32 *) drawable,
gc, (GdkPixmap *) image->windowing_data,
xsrc, ysrc, xdest, ydest, width, height);
}
static gint
gdk_win32_get_depth (GdkDrawable *drawable)
{
/* This is a bit bogus but I'm not sure the other way is better */
return gdk_drawable_get_depth (GDK_DRAWABLE_IMPL_WIN32 (drawable)->wrapper);
}
static GdkVisual*
gdk_win32_get_visual (GdkDrawable *drawable)
{
return gdk_drawable_get_visual (GDK_DRAWABLE_IMPL_WIN32 (drawable)->wrapper);
}
HGDIOBJ
gdk_win32_drawable_get_handle (GdkDrawable *drawable)
{
return GDK_DRAWABLE_HANDLE (drawable);
}
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