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gtk/gdk/win32/gdkdrawable-win32.c

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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 <glib.h>
#include <pango/pangowin32.h>
#include "gdkinternals.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 gpointer parent_class = NULL;
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);
parent_class = g_type_class_peek_parent (klass);
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->get_image = _gdk_win32_get_image;
}
/*****************************************************
* Win32 specific implementations of generic functions *
*****************************************************/
static GdkColormap*
gdk_win32_get_colormap (GdkDrawable *drawable)
{
GdkDrawableImplWin32 *impl;
impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
return impl->colormap;
}
static void
gdk_win32_set_colormap (GdkDrawable *drawable,
GdkColormap *colormap)
{
GdkDrawableImplWin32 *impl;
g_return_if_fail (colormap != NULL);
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
*/
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: %#x (%p) %s%dx%d@+%d+%d\n",
(guint) GDK_DRAWABLE_HANDLE (drawable),
gc_private,
(filled ? "fill " : ""),
width, height, x, y));
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)
old_pen_or_brush = SelectObject (hdc, GetStockObject (NULL_PEN));
else
old_pen_or_brush = SelectObject (hdc, GetStockObject (HOLLOW_BRUSH));
if (!Rectangle (hdc, x, y, x+width+1, y+height+1))
WIN32_GDI_FAILED ("Rectangle");
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: %#x %d,%d,%d,%d %d %d\n",
(guint) GDK_DRAWABLE_HANDLE (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: %#x (%p) %d\n",
(guint) GDK_DRAWABLE_HANDLE (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: %#x (%d,%d) \"%.*s\" (len %d)\n",
(guint) GDK_DRAWABLE_HANDLE (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_nmbstowchar_ts (wcstr, text, text_length, text_length)) == -1)
g_warning ("gdk_win32_draw_text: gdk_nmbstowchar_ts 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: %#x (%d,%d) len: %d\n",
(guint) GDK_DRAWABLE_HANDLE (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)
{
HDC hdc;
HDC srcdc;
HGDIOBJ hgdiobj;
HRGN src_rgn, draw_rgn, outside_rgn;
RECT r;
gint src_width, src_height;
gboolean ok = TRUE;
GdkDrawableImplWin32 *impl;
HANDLE src_handle;
impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
if (GDK_IS_DRAWABLE_IMPL_WIN32(src))
src_handle = GDK_DRAWABLE_IMPL_WIN32 (src)->handle;
else
src_handle = GDK_DRAWABLE_HANDLE (src);
GDK_NOTE (MISC, g_print ("gdk_draw_pixmap: dest: %#x @+%d+%d"
"src: %#x %dx%d@+%d+%d\n",
(guint) GDK_DRAWABLE_HANDLE (drawable),
xdest, ydest,
(guint) GDK_PIXMAP_HBITMAP (src),
width, height, xsrc, ysrc));
hdc = gdk_win32_hdc_get (drawable, gc, 0);
gdk_drawable_get_size (src, &src_width, &src_height);
src_rgn = CreateRectRgn (0, 0, src_width + 1, src_height + 1);
draw_rgn = CreateRectRgn (xsrc, ysrc, xsrc + width + 1, ysrc + height + 1);
if (GDK_IS_WINDOW_IMPL_WIN32 (drawable))
{
/* 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
*/
SetRectEmpty (&r);
outside_rgn = CreateRectRgnIndirect (&r);
if (CombineRgn (outside_rgn, draw_rgn, src_rgn, RGN_DIFF) != NULLREGION)
{
if (ERROR == OffsetRgn (outside_rgn, xdest, ydest))
WIN32_GDI_FAILED ("OffsetRgn");
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)));
if (!InvalidateRgn (impl->handle, outside_rgn, TRUE))
WIN32_GDI_FAILED ("InvalidateRgn");
}
if (!DeleteObject (outside_rgn))
WIN32_GDI_FAILED ("DeleteObject");
}
#if 1 /* Don't know if this is necessary */
if (CombineRgn (draw_rgn, draw_rgn, src_rgn, RGN_AND) == COMPLEXREGION)
g_warning ("gdk_win32_draw_drawable: CombineRgn returned a COMPLEXREGION");
if (0 == GetRgnBox (draw_rgn, &r))
WIN32_GDI_FAILED("GetRgnBox");
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
if (!DeleteObject (src_rgn))
WIN32_GDI_FAILED ("DeleteObject");
if (!DeleteObject (draw_rgn))
WIN32_GDI_FAILED ("DeleteObject");
/* This function is called also to bitblt from a window.
*/
if (GDK_IS_PIXMAP_IMPL_WIN32 (src) || GDK_IS_PIXMAP(src))
{
if ((srcdc = CreateCompatibleDC (hdc)) == NULL)
WIN32_GDI_FAILED ("CreateCompatibleDC"), ok = FALSE;
if (ok && (hgdiobj = SelectObject (srcdc, src_handle)) == NULL)
WIN32_GDI_FAILED ("SelectObject"), ok = FALSE;
if (ok && !BitBlt (hdc, xdest, ydest, width, height,
srcdc, xsrc, ysrc, SRCCOPY))
WIN32_GDI_FAILED ("BitBlt");
if (ok && (SelectObject (srcdc, hgdiobj) == NULL))
WIN32_GDI_FAILED ("SelectObject");
if (srcdc != NULL && !DeleteDC (srcdc))
WIN32_GDI_FAILED ("DeleteDC");
}
else if (impl->handle == src_handle)
{
/* Blitting inside a window, use ScrollDC */
RECT scrollRect, clipRect, emptyRect;
HRGN updateRgn;
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"), ok = FALSE;
if (ok && !InvalidateRgn (impl->handle, updateRgn, FALSE))
WIN32_GDI_FAILED ("InvalidateRgn"), ok = FALSE;
if (ok && !UpdateWindow (impl->handle))
WIN32_GDI_FAILED ("UpdateWindow");
if (!DeleteObject (updateRgn))
WIN32_GDI_FAILED ("DeleteObject");
}
else
{
if ((srcdc = GetDC (src_handle)) == NULL)
WIN32_GDI_FAILED ("GetDC"), ok = FALSE;
if (ok && !BitBlt (hdc, xdest, ydest, width, height,
srcdc, xsrc, ysrc, SRCCOPY))
WIN32_GDI_FAILED ("BitBlt");
if (ok && !ReleaseDC (src_handle, srcdc))
WIN32_GDI_FAILED ("ReleaseDC");
}
gdk_win32_hdc_release (drawable, gc, 0);
}
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_colormap_color (impl->colormap, gc_private->foreground);
GDK_NOTE (MISC, g_print ("gdk_draw_points: %#x %dx%.06x\n",
(guint) GDK_DRAWABLE_HANDLE (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: %#x nsegs: %d\n",
(guint) GDK_DRAWABLE_HANDLE (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
{
for (i = 0; ok && i < nsegs; i++)
{
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);
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_BOTTOM|TA_NOUPDATECP))
WIN32_GDI_FAILED ("SetTextAlign");
pango_win32_render (hdc, font, glyphs, x, y);
gdk_win32_hdc_release (drawable, gc, mask);
}
static void
gdk_win32_draw_image (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
GdkImagePrivateWin32 *image_private = IMAGE_PRIVATE_DATA (image);
GdkColormapPrivateWin32 *colormap_private = (GdkColormapPrivateWin32 *) impl->colormap;
HDC hdc, memdc;
HGDIOBJ oldbitmap;
DIBSECTION ds;
static struct {
BITMAPINFOHEADER bmiHeader;
WORD bmiIndices[256];
} bmi;
static gboolean bmi_inited = FALSE;
gboolean ok = TRUE;
int i;
hdc = gdk_win32_hdc_get (drawable, gc, 0);
if (image->visual->type == GDK_VISUAL_PSEUDO_COLOR &&
colormap_private && colormap_private->xcolormap->rc_palette)
{
if (!bmi_inited)
{
for (i = 0; i < 256; i++)
bmi.bmiIndices[i] = i;
bmi_inited = TRUE;
}
if (GetObject (image_private->hbitmap, sizeof (DIBSECTION),
&ds) != sizeof (DIBSECTION))
WIN32_GDI_FAILED ("GetObject"), ok = FALSE;
#if 0
g_print("xdest = %d, ydest = %d, xsrc = %d, ysrc = %d, width = %d, height = %d\n",
xdest, ydest, xsrc, ysrc, width, height);
g_print("bmWidth = %d, bmHeight = %d, bmBitsPixel = %d, bmBits = %p\n",
ds.dsBm.bmWidth, ds.dsBm.bmHeight, ds.dsBm.bmBitsPixel, ds.dsBm.bmBits);
g_print("biWidth = %d, biHeight = %d, biBitCount = %d, biClrUsed = %d\n",
ds.dsBmih.biWidth, ds.dsBmih.biHeight, ds.dsBmih.biBitCount, ds.dsBmih.biClrUsed);
#endif
bmi.bmiHeader = ds.dsBmih;
/* I have spent hours on getting the parameters to
* SetDIBitsToDevice right. I wonder what drugs the guys in
* Redmond were on when they designed this API.
*/
if (ok && SetDIBitsToDevice (hdc,
xdest, ydest,
width, height,
xsrc, (-ds.dsBmih.biHeight)-height-ysrc,
0, -ds.dsBmih.biHeight,
ds.dsBm.bmBits,
(CONST BITMAPINFO *) &bmi,
DIB_PAL_COLORS) == 0)
WIN32_GDI_FAILED ("SetDIBitsToDevice");
}
else
{
if ((memdc = CreateCompatibleDC (hdc)) == NULL)
WIN32_GDI_FAILED ("CreateCompatibleDC"), ok = FALSE;
if (ok && (oldbitmap = SelectObject (memdc, image_private->hbitmap)) == NULL)
WIN32_GDI_FAILED ("SelectObject"), ok = FALSE;
if (ok && !BitBlt (hdc, xdest, ydest, width, height,
memdc, xsrc, ysrc, SRCCOPY))
WIN32_GDI_FAILED ("BitBlt");
if (oldbitmap != NULL && SelectObject (memdc, oldbitmap) == NULL)
WIN32_GDI_FAILED ("SelectObject");
if (memdc != NULL && !DeleteDC (memdc))
WIN32_GDI_FAILED ("DeleteDC");
}
gdk_win32_hdc_release (drawable, gc, 0);
}
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);
}
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