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gtk/gdk/win32/gdkdrawable-win32.c
Tor Lillqvist 34e8bd9dba Fix build breakage on Windows caused by the region changes 
Patches by Sam Thursfield, from bug #623476.
2010-07-05 12:57:13 +03:00

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 1998-2004 Tor Lillqvist
* Copyright (C) 2001-2005 Hans Breuer
*
* 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 "config.h"
#include <math.h>
#include <stdio.h>
#include <glib.h>
#include <pango/pangowin32.h>
#include <cairo-win32.h>
#include "gdkscreen.h" /* gdk_screen_get_default() */
#include "gdkprivate-win32.h"
#define ROP3_D 0x00AA0029
#define ROP3_DSna 0x00220326
#define ROP3_DSPDxax 0x00E20746
#define LINE_ATTRIBUTES (GDK_GC_LINE_WIDTH|GDK_GC_LINE_STYLE| \
GDK_GC_CAP_STYLE|GDK_GC_JOIN_STYLE)
#define MUST_RENDER_DASHES_MANUALLY(gcwin32) \
(gcwin32->line_style == GDK_LINE_DOUBLE_DASH || \
(gcwin32->line_style == GDK_LINE_ON_OFF_DASH && gcwin32->pen_dash_offset))
static void gdk_win32_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
gint x,
gint y,
gint width,
gint height);
static void gdk_win32_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2);
static void gdk_win32_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
GdkPoint *points,
gint npoints);
static void gdk_win32_draw_drawable (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height,
GdkDrawable *original_src);
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_image (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
static void gdk_win32_draw_pixbuf (GdkDrawable *drawable,
GdkGC *gc,
GdkPixbuf *pixbuf,
gint src_x,
gint src_y,
gint dest_x,
gint dest_y,
gint width,
gint height,
GdkRgbDither dither,
gint x_dither,
gint y_dither);
static cairo_surface_t *gdk_win32_ref_cairo_surface (GdkDrawable *drawable);
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 GdkScreen * gdk_win32_get_screen (GdkDrawable *drawable);
static GdkVisual* gdk_win32_get_visual (GdkDrawable *drawable);
static void gdk_drawable_impl_win32_finalize (GObject *object);
static const cairo_user_data_key_t gdk_win32_cairo_key;
G_DEFINE_TYPE (GdkDrawableImplWin32, _gdk_drawable_impl_win32, GDK_TYPE_DRAWABLE)
static void
_gdk_drawable_impl_win32_class_init (GdkDrawableImplWin32Class *klass)
{
GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (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_drawable_with_src = 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_image = gdk_win32_draw_image;
drawable_class->draw_pixbuf = gdk_win32_draw_pixbuf;
drawable_class->ref_cairo_surface = gdk_win32_ref_cairo_surface;
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_screen = gdk_win32_get_screen;
drawable_class->get_visual = gdk_win32_get_visual;
drawable_class->_copy_to_image = _gdk_win32_copy_to_image;
}
static void
_gdk_drawable_impl_win32_init (GdkDrawableImplWin32 *impl)
{
}
static void
gdk_drawable_impl_win32_finalize (GObject *object)
{
gdk_drawable_set_colormap (GDK_DRAWABLE (object), NULL);
G_OBJECT_CLASS (_gdk_drawable_impl_win32_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)
g_object_unref (impl->colormap);
impl->colormap = colormap;
if (impl->colormap)
g_object_ref (impl->colormap);
}
/* Drawing
*/
static int
rop2_to_rop3 (int rop2)
{
switch (rop2)
{
/* Oh, Microsoft's silly names for binary and ternary rops. */
#define CASE(rop2,rop3) case R2_##rop2: return rop3
CASE (BLACK, BLACKNESS);
CASE (NOTMERGEPEN, NOTSRCERASE);
CASE (MASKNOTPEN, 0x00220326);
CASE (NOTCOPYPEN, NOTSRCCOPY);
CASE (MASKPENNOT, SRCERASE);
CASE (NOT, DSTINVERT);
CASE (XORPEN, SRCINVERT);
CASE (NOTMASKPEN, 0x007700E6);
CASE (MASKPEN, SRCAND);
CASE (NOTXORPEN, 0x00990066);
CASE (NOP, 0x00AA0029);
CASE (MERGENOTPEN, MERGEPAINT);
CASE (COPYPEN, SRCCOPY);
CASE (MERGEPENNOT, 0x00DD0228);
CASE (MERGEPEN, SRCPAINT);
CASE (WHITE, WHITENESS);
#undef CASE
default: return SRCCOPY;
}
}
static int
rop2_to_patblt_rop (int rop2)
{
switch (rop2)
{
#define CASE(rop2,patblt_rop) case R2_##rop2: return patblt_rop
CASE (COPYPEN, PATCOPY);
CASE (XORPEN, PATINVERT);
CASE (NOT, DSTINVERT);
CASE (BLACK, BLACKNESS);
CASE (WHITE, WHITENESS);
#undef CASE
default:
g_warning ("Unhandled rop2 in GC to be used in PatBlt: %#x", rop2);
return PATCOPY;
}
}
static inline int
align_with_dash_offset (int a, DWORD *dashes, int num_dashes, GdkGCWin32 *gcwin32)
{
int n = 0;
int len_sum = 0;
/*
* We can't simply add the dashoffset, it can be an arbitrary larger
* or smaller value not even between x1 and x2. It just says use the
* dash pattern aligned to the offset. So ensure x1 is smaller _x1
* and we start with the appropriate dash.
*/
for (n = 0; n < num_dashes; n++)
len_sum += dashes[n];
if ( len_sum > 0 /* pathological api usage? */
&& gcwin32->pen_dash_offset > a)
a -= (((gcwin32->pen_dash_offset/len_sum - a/len_sum) + 1) * len_sum);
else
a = gcwin32->pen_dash_offset;
return a;
}
/* Render a dashed line 'by hand'. Used for all dashes on Win9x (where
* GDI is way too limited), and for double dashes on all Windowses.
*/
static inline gboolean
render_line_horizontal (GdkGCWin32 *gcwin32,
int x1,
int x2,
int y)
{
int n = 0;
const int pen_width = MAX (gcwin32->pen_width, 1);
const int _x1 = x1;
g_assert (gcwin32->pen_dashes);
x1 = align_with_dash_offset (x1, gcwin32->pen_dashes, gcwin32->pen_num_dashes, gcwin32);
for (n = 0; x1 < x2; n++)
{
int len = gcwin32->pen_dashes[n % gcwin32->pen_num_dashes];
if (x1 + len > x2)
len = x2 - x1;
if (n % 2 == 0 && x1 + len > _x1)
if (!GDI_CALL (PatBlt, (gcwin32->hdc,
x1 < _x1 ? _x1 : x1,
y - pen_width / 2,
len, pen_width,
rop2_to_patblt_rop (gcwin32->rop2))))
return FALSE;
x1 += gcwin32->pen_dashes[n % gcwin32->pen_num_dashes];
}
if (gcwin32->line_style == GDK_LINE_DOUBLE_DASH)
{
HBRUSH hbr;
if ((hbr = SelectObject (gcwin32->hdc, gcwin32->pen_hbrbg)) == HGDI_ERROR)
return FALSE;
x1 = _x1;
x1 += gcwin32->pen_dash_offset;
for (n = 0; x1 < x2; n++)
{
int len = gcwin32->pen_dashes[n % gcwin32->pen_num_dashes];
if (x1 + len > x2)
len = x2 - x1;
if (n % 2)
if (!GDI_CALL (PatBlt, (gcwin32->hdc, x1, y - pen_width / 2,
len, pen_width,
rop2_to_patblt_rop (gcwin32->rop2))))
return FALSE;
x1 += gcwin32->pen_dashes[n % gcwin32->pen_num_dashes];
}
if (SelectObject (gcwin32->hdc, hbr) == HGDI_ERROR)
return FALSE;
}
return TRUE;
}
static inline gboolean
render_line_vertical (GdkGCWin32 *gcwin32,
int x,
int y1,
int y2)
{
int n;
const int pen_width = MAX (gcwin32->pen_width, 1);
const int _y1 = y1;
g_assert (gcwin32->pen_dashes);
y1 = align_with_dash_offset (y1, gcwin32->pen_dashes, gcwin32->pen_num_dashes, gcwin32);
for (n = 0; y1 < y2; n++)
{
int len = gcwin32->pen_dashes[n % gcwin32->pen_num_dashes];
if (y1 + len > y2)
len = y2 - y1;
if (n % 2 == 0 && y1 + len > _y1)
if (!GDI_CALL (PatBlt, (gcwin32->hdc, x - pen_width / 2,
y1 < _y1 ? _y1 : y1,
pen_width, len,
rop2_to_patblt_rop (gcwin32->rop2))))
return FALSE;
y1 += gcwin32->pen_dashes[n % gcwin32->pen_num_dashes];
}
if (gcwin32->line_style == GDK_LINE_DOUBLE_DASH)
{
HBRUSH hbr;
if ((hbr = SelectObject (gcwin32->hdc, gcwin32->pen_hbrbg)) == HGDI_ERROR)
return FALSE;
y1 = _y1;
y1 += gcwin32->pen_dash_offset;
for (n = 0; y1 < y2; n++)
{
int len = gcwin32->pen_dashes[n % gcwin32->pen_num_dashes];
if (y1 + len > y2)
len = y2 - y1;
if (n % 2)
if (!GDI_CALL (PatBlt, (gcwin32->hdc, x - pen_width / 2, y1,
pen_width, len,
rop2_to_patblt_rop (gcwin32->rop2))))
return FALSE;
y1 += gcwin32->pen_dashes[n % gcwin32->pen_num_dashes];
}
if (SelectObject (gcwin32->hdc, hbr) == HGDI_ERROR)
return FALSE;
}
return TRUE;
}
static void
draw_tiles_lowlevel (HDC dest,
HDC tile,
int rop3,
gint dest_x,
gint dest_y,
gint tile_x_origin,
gint tile_y_origin,
gint width,
gint height,
gint tile_width,
gint tile_height)
{
gint x, y;
GDK_NOTE (DRAW, g_print ("draw_tiles_lowlevel: %p %+d%+d tile=%p:%dx%d@%+d%+d %dx%d\n",
dest,
dest_x, dest_y,
tile, tile_width, tile_height,
tile_x_origin, tile_y_origin,
width, height));
y = tile_y_origin % tile_height;
if (y > 0)
y -= tile_height;
while (y < dest_y + height)
{
if (y + tile_height >= dest_y)
{
x = tile_x_origin % tile_width;
if (x > 0)
x -= tile_width;
while (x < dest_x + width)
{
if (x + tile_width >= dest_x)
{
gint src_x = MAX (0, dest_x - x);
gint src_y = MAX (0, dest_y - y);
if (!GDI_CALL (BitBlt, (dest, x + src_x, y + src_y,
MIN (tile_width, dest_x + width - (x + src_x)),
MIN (tile_height, dest_y + height - (y + src_y)),
tile,
src_x, src_y,
rop3)))
return;
}
x += tile_width;
}
}
y += tile_height;
}
}
static void
draw_tiles (GdkDrawable *drawable,
GdkGC *gc,
int rop3,
GdkPixmap *tile,
gint dest_x,
gint dest_y,
gint tile_x_origin,
gint tile_y_origin,
gint width,
gint height)
{
const GdkGCValuesMask mask = GDK_GC_FOREGROUND;
gint tile_width, tile_height;
GdkGC *gc_copy;
HDC dest_hdc, tile_hdc;
gc_copy = gdk_gc_new (tile);
gdk_gc_copy (gc_copy, gc);
dest_hdc = gdk_win32_hdc_get (drawable, gc, mask);
tile_hdc = gdk_win32_hdc_get (tile, gc_copy, mask);
gdk_drawable_get_size (tile, &tile_width, &tile_height);
draw_tiles_lowlevel (dest_hdc, tile_hdc, rop3,
dest_x, dest_y, tile_x_origin, tile_y_origin,
width, height, tile_width, tile_height);
gdk_win32_hdc_release (drawable, gc, mask);
gdk_win32_hdc_release (tile, gc_copy, mask);
g_object_unref (gc_copy);
}
static void
generic_draw (GdkDrawable *drawable,
GdkGC *gc,
GdkGCValuesMask mask,
void (*function) (GdkGCWin32 *, HDC, gint, gint, va_list),
const cairo_region_t *region,
...)
{
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
GdkGCWin32 *gcwin32 = GDK_GC_WIN32 (gc);
HDC hdc;
va_list args;
GdkFill fill_style = _gdk_gc_get_fill (gc);
va_start (args, region);
/* If tiled or stippled, draw to a temp pixmap and do blitting magic.
*/
if (gcwin32->values_mask & GDK_GC_FILL &&
((fill_style == GDK_TILED &&
gcwin32->values_mask & GDK_GC_TILE &&
_gdk_gc_get_tile (gc) != NULL)
||
((fill_style == GDK_OPAQUE_STIPPLED ||
fill_style == GDK_STIPPLED) &&
gcwin32->values_mask & GDK_GC_STIPPLE &&
_gdk_gc_get_stipple (gc) != NULL)))
{
const GdkGCValuesMask blitting_mask = 0;
GdkGCValuesMask drawing_mask = GDK_GC_FOREGROUND;
gint ts_x_origin = 0, ts_y_origin = 0;
cairo_rectangle_int_t region_extents;
cairo_region_get_extents (region, &region_extents);
GdkPixmap *mask_pixmap =
gdk_pixmap_new (drawable, region_extents.width, region_extents.height, 1);
GdkPixmap *tile_pixmap =
gdk_pixmap_new (drawable, region_extents.width, region_extents.height, -1);
GdkPixmap *stipple_bitmap = NULL;
GdkColor fg;
GdkGC *mask_gc = gdk_gc_new (mask_pixmap);
GdkGC *tile_gc = gdk_gc_new (tile_pixmap);
HDC mask_hdc;
HDC tile_hdc;
HGDIOBJ old_mask_hbm;
HGDIOBJ old_tile_hbm;
GdkGCValues gcvalues;
hdc = gdk_win32_hdc_get (drawable, gc, blitting_mask);
tile_hdc = CreateCompatibleDC (hdc);
if (gcwin32->values_mask & GDK_GC_TS_X_ORIGIN)
ts_x_origin = gc->ts_x_origin;
if (gcwin32->values_mask & GDK_GC_TS_Y_ORIGIN)
ts_y_origin = gc->ts_y_origin;
ts_x_origin -= region_extents.x;
ts_y_origin -= region_extents.y;
/* Fill mask bitmap with zeros */
gdk_gc_set_function (mask_gc, GDK_CLEAR);
gdk_draw_rectangle (mask_pixmap, mask_gc, TRUE,
0, 0, region_extents.width, region_extents.height);
/* Paint into mask bitmap, drawing ones */
gdk_gc_set_function (mask_gc, GDK_COPY);
fg.pixel = 1;
gdk_gc_set_foreground (mask_gc, &fg);
/* If the drawing function uses line attributes, set them as in
* the real GC.
*/
if (mask & LINE_ATTRIBUTES)
{
gdk_gc_get_values (gc, &gcvalues);
if (gcvalues.line_width != 0 ||
gcvalues.line_style != GDK_LINE_SOLID ||
gcvalues.cap_style != GDK_CAP_BUTT ||
gcvalues.join_style != GDK_JOIN_MITER)
gdk_gc_set_line_attributes (mask_gc,
gcvalues.line_width,
gcvalues.line_style,
gcvalues.cap_style,
gcvalues.join_style);
drawing_mask |= LINE_ATTRIBUTES;
}
mask_hdc = gdk_win32_hdc_get (mask_pixmap, mask_gc, drawing_mask);
(*function) (GDK_GC_WIN32 (mask_gc), mask_hdc,
region_extents.x, region_extents.y, args);
gdk_win32_hdc_release (mask_pixmap, mask_gc, drawing_mask);
if (fill_style == GDK_TILED)
{
/* Tile pixmap with tile */
draw_tiles (tile_pixmap, tile_gc, SRCCOPY,
_gdk_gc_get_tile (gc),
0, 0, ts_x_origin, ts_y_origin,
region_extents.width, region_extents.height);
}
else
{
/* Tile with stipple */
GdkGC *stipple_gc;
stipple_bitmap =
gdk_pixmap_new (NULL, region_extents.width, region_extents.height, 1);
stipple_gc = gdk_gc_new (stipple_bitmap);
/* Tile stipple bitmap */
draw_tiles (stipple_bitmap, stipple_gc, SRCCOPY,
_gdk_gc_get_stipple (gc),
0, 0, ts_x_origin, ts_y_origin,
region_extents.width, region_extents.height);
if (fill_style == GDK_OPAQUE_STIPPLED)
{
/* Fill tile pixmap with background */
fg.pixel = _gdk_gc_get_bg_pixel (gc);
gdk_gc_set_foreground (tile_gc, &fg);
gdk_draw_rectangle (tile_pixmap, tile_gc, TRUE,
0, 0,
region_extents.width, region_extents.height);
}
g_object_unref (stipple_gc);
}
g_object_unref (mask_gc);
g_object_unref (tile_gc);
mask_hdc = CreateCompatibleDC (hdc);
if ((old_mask_hbm = SelectObject (mask_hdc, GDK_PIXMAP_HBITMAP (mask_pixmap))) == NULL)
WIN32_GDI_FAILED ("SelectObject");
if ((old_tile_hbm = SelectObject (tile_hdc, GDK_PIXMAP_HBITMAP (tile_pixmap))) == NULL)
WIN32_GDI_FAILED ("SelectObject");
if (fill_style == GDK_STIPPLED ||
fill_style == GDK_OPAQUE_STIPPLED)
{
HDC stipple_hdc;
HGDIOBJ old_stipple_hbm;
HBRUSH fg_brush;
HGDIOBJ old_tile_brush;
if ((stipple_hdc = CreateCompatibleDC (hdc)) == NULL)
WIN32_GDI_FAILED ("CreateCompatibleDC");
if ((old_stipple_hbm =
SelectObject (stipple_hdc,
GDK_PIXMAP_HBITMAP (stipple_bitmap))) == NULL)
WIN32_GDI_FAILED ("SelectObject");
if ((fg_brush = CreateSolidBrush
(_gdk_win32_colormap_color (impl->colormap,
_gdk_gc_get_fg_pixel (gc)))) == NULL)
WIN32_GDI_FAILED ("CreateSolidBrush");
if ((old_tile_brush = SelectObject (tile_hdc, fg_brush)) == NULL)
WIN32_GDI_FAILED ("SelectObject");
/* Paint tile with foreround where stipple is one
*
* Desired ternary ROP: (P=foreground, S=stipple, D=destination)
* P S D ?
* 0 0 0 0
* 0 0 1 1
* 0 1 0 0
* 0 1 1 0
* 1 0 0 0
* 1 0 1 1
* 1 1 0 1
* 1 1 1 1
*
* Reading bottom-up: 11100010 = 0xE2. PSDK docs say this is
* known as DSPDxax, with hex value 0x00E20746.
*/
GDI_CALL (BitBlt, (tile_hdc, 0, 0,
region_extents.width, region_extents.height,
stipple_hdc, 0, 0,
ROP3_DSPDxax));
if (fill_style == GDK_STIPPLED)
{
/* Punch holes in mask where stipple is zero */
GDI_CALL (BitBlt, (mask_hdc, 0, 0,
region_extents.width, region_extents.height,
stipple_hdc, 0, 0,
SRCAND));
}
GDI_CALL (SelectObject, (tile_hdc, old_tile_brush));
GDI_CALL (DeleteObject, (fg_brush));
GDI_CALL (SelectObject, (stipple_hdc, old_stipple_hbm));
GDI_CALL (DeleteDC, (stipple_hdc));
g_object_unref (stipple_bitmap);
}
/* Tile pixmap now contains the pattern that we should paint in
* the areas where mask is one. (It is filled with said pattern.)
*/
GDI_CALL (MaskBlt, (hdc, region_extents.x, region_extents.y,
region_extents.width, region_extents.height,
tile_hdc, 0, 0,
GDK_PIXMAP_HBITMAP (mask_pixmap), 0, 0,
MAKEROP4 (rop2_to_rop3 (gcwin32->rop2), ROP3_D)));
/* Cleanup */
GDI_CALL (SelectObject, (mask_hdc, old_mask_hbm));
GDI_CALL (SelectObject, (tile_hdc, old_tile_hbm));
GDI_CALL (DeleteDC, (mask_hdc));
GDI_CALL (DeleteDC, (tile_hdc));
g_object_unref (mask_pixmap);
g_object_unref (tile_pixmap);
gdk_win32_hdc_release (drawable, gc, blitting_mask);
}
else
{
hdc = gdk_win32_hdc_get (drawable, gc, mask);
(*function) (gcwin32, hdc, 0, 0, args);
gdk_win32_hdc_release (drawable, gc, mask);
}
va_end (args);
}
static cairo_region_t *
widen_bounds (GdkRectangle *bounds,
gint pen_width)
{
if (pen_width == 0)
pen_width = 1;
bounds->x -= pen_width;
bounds->y -= pen_width;
bounds->width += 2 * pen_width;
bounds->height += 2 * pen_width;
return cairo_region_create_rectangle (bounds);
}
static void
draw_rectangle (GdkGCWin32 *gcwin32,
HDC hdc,
gint x_offset,
gint y_offset,
va_list args)
{
HGDIOBJ old_pen_or_brush;
gboolean filled;
gint x;
gint y;
gint width;
gint height;
filled = va_arg (args, gboolean);
x = va_arg (args, gint);
y = va_arg (args, gint);
width = va_arg (args, gint);
height = va_arg (args, gint);
x -= x_offset;
y -= y_offset;
if (!filled && MUST_RENDER_DASHES_MANUALLY (gcwin32))
{
render_line_vertical (gcwin32, x, y, y+height+1) &&
render_line_horizontal (gcwin32, x, x+width+1, y) &&
render_line_vertical (gcwin32, x+width+1, y, y+height+1) &&
render_line_horizontal (gcwin32, x, x+width+1, y+height+1);
}
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");
else
GDI_CALL (Rectangle, (hdc, x, y, x+width+1, y+height+1));
if (old_pen_or_brush != NULL)
GDI_CALL (SelectObject, (hdc, old_pen_or_brush));
}
}
static void
gdk_win32_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
gint x,
gint y,
gint width,
gint height)
{
GdkRectangle bounds;
cairo_region_t *region;
GDK_NOTE (DRAW, g_print ("gdk_win32_draw_rectangle: %s (%p) %s%dx%d@%+d%+d\n",
_gdk_win32_drawable_description (drawable),
gc,
(filled ? "fill " : ""),
width, height, x, y));
bounds.x = x;
bounds.y = y;
bounds.width = width;
bounds.height = height;
region = widen_bounds (&bounds, GDK_GC_WIN32 (gc)->pen_width);
generic_draw (drawable, gc,
GDK_GC_FOREGROUND | GDK_GC_BACKGROUND |
(filled ? 0 : LINE_ATTRIBUTES),
draw_rectangle, region, filled, x, y, width, height);
cairo_region_destroy (region);
}
static void
draw_arc (GdkGCWin32 *gcwin32,
HDC hdc,
gint x_offset,
gint y_offset,
va_list args)
{
HGDIOBJ old_pen;
gboolean filled;
gint x, y;
gint width, height;
gint angle1, angle2;
int nXStartArc, nYStartArc, nXEndArc, nYEndArc;
filled = va_arg (args, gboolean);
x = va_arg (args, gint);
y = va_arg (args, gint);
width = va_arg (args, gint);
height = va_arg (args, gint);
angle1 = va_arg (args, gint);
angle2 = va_arg (args, gint);
x -= x_offset;
y -= y_offset;
if (angle2 >= 360*64)
{
nXStartArc = nYStartArc = nXEndArc = nYEndArc = 0;
}
else if (angle2 > 0)
{
nXStartArc = x + width/2 + width * cos(angle1/64.*2.*G_PI/360.);
nYStartArc = y + height/2 + -height * sin(angle1/64.*2.*G_PI/360.);
nXEndArc = x + width/2 + width * cos((angle1+angle2)/64.*2.*G_PI/360.);
nYEndArc = y + height/2 + -height * sin((angle1+angle2)/64.*2.*G_PI/360.);
}
else
{
nXEndArc = x + width/2 + width * cos(angle1/64.*2.*G_PI/360.);
nYEndArc = y + height/2 + -height * sin(angle1/64.*2.*G_PI/360.);
nXStartArc = x + width/2 + width * cos((angle1+angle2)/64.*2.*G_PI/360.);
nYStartArc = y + height/2 + -height * sin((angle1+angle2)/64.*2.*G_PI/360.);
}
if (filled)
{
old_pen = SelectObject (hdc, GetStockObject (NULL_PEN));
GDK_NOTE (DRAW, g_print ("... Pie(%p,%d,%d,%d,%d,%d,%d,%d,%d)\n",
hdc, x, y, x+width, y+height,
nXStartArc, nYStartArc, nXEndArc, nYEndArc));
GDI_CALL (Pie, (hdc, x, y, x+width, y+height,
nXStartArc, nYStartArc, nXEndArc, nYEndArc));
GDI_CALL (SelectObject, (hdc, old_pen));
}
else
{
GDK_NOTE (DRAW, g_print ("... Arc(%p,%d,%d,%d,%d,%d,%d,%d,%d)\n",
hdc, x, y, x+width, y+height,
nXStartArc, nYStartArc, nXEndArc, nYEndArc));
GDI_CALL (Arc, (hdc, x, y, x+width, y+height,
nXStartArc, nYStartArc, nXEndArc, nYEndArc));
}
}
static void
gdk_win32_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2)
{
GdkRectangle bounds;
cairo_region_t *region;
GDK_NOTE (DRAW, g_print ("gdk_win32_draw_arc: %s %d,%d,%d,%d %d %d\n",
_gdk_win32_drawable_description (drawable),
x, y, width, height, angle1, angle2));
if (width <= 2 || height <= 2 || angle2 == 0)
return;
bounds.x = x;
bounds.y = y;
bounds.width = width;
bounds.height = height;
region = widen_bounds (&bounds, GDK_GC_WIN32 (gc)->pen_width);
generic_draw (drawable, gc,
GDK_GC_FOREGROUND | (filled ? 0 : LINE_ATTRIBUTES),
draw_arc, region, filled, x, y, width, height, angle1, angle2);
cairo_region_destroy (region);
}
static void
draw_polygon (GdkGCWin32 *gcwin32,
HDC hdc,
gint x_offset,
gint y_offset,
va_list args)
{
gboolean filled;
POINT *pts;
HGDIOBJ old_pen_or_brush;
gint npoints;
gint i;
filled = va_arg (args, gboolean);
pts = va_arg (args, POINT *);
npoints = va_arg (args, gint);
if (x_offset != 0 || y_offset != 0)
for (i = 0; i < npoints; i++)
{
pts[i].x -= x_offset;
pts[i].y -= y_offset;
}
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");
GDI_CALL (Polygon, (hdc, pts, npoints));
if (old_pen_or_brush != NULL)
GDI_CALL (SelectObject, (hdc, old_pen_or_brush));
}
static void
gdk_win32_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gboolean filled,
GdkPoint *points,
gint npoints)
{
GdkRectangle bounds;
cairo_region_t *region;
POINT *pts;
int i;
GDK_NOTE (DRAW, g_print ("gdk_win32_draw_polygon: %s %d points\n",
_gdk_win32_drawable_description (drawable),
npoints));
if (npoints < 2)
return;
bounds.x = G_MAXINT;
bounds.y = G_MAXINT;
bounds.width = 0;
bounds.height = 0;
pts = g_new (POINT, npoints);
for (i = 0; i < npoints; i++)
{
bounds.x = MIN (bounds.x, points[i].x);
bounds.y = MIN (bounds.y, points[i].y);
pts[i].x = points[i].x;
pts[i].y = points[i].y;
}
for (i = 0; i < npoints; i++)
{
bounds.width = MAX (bounds.width, points[i].x - bounds.x);
bounds.height = MAX (bounds.height, points[i].y - bounds.y);
}
region = widen_bounds (&bounds, GDK_GC_WIN32 (gc)->pen_width);
generic_draw (drawable, gc,
GDK_GC_FOREGROUND | (filled ? 0 : LINE_ATTRIBUTES),
draw_polygon, region, filled, pts, npoints);
cairo_region_destroy (region);
g_free (pts);
}
static void
gdk_win32_draw_drawable (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height,
GdkDrawable *original_src)
{
g_assert (GDK_IS_DRAWABLE_IMPL_WIN32 (drawable));
_gdk_win32_blit (FALSE, (GdkDrawableImplWin32 *) drawable,
gc, src, xsrc, ysrc,
xdest, ydest, width, height);
}
static void
gdk_win32_draw_points (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints)
{
HDC hdc;
HGDIOBJ old_pen;
int i;
hdc = gdk_win32_hdc_get (drawable, gc, GDK_GC_FOREGROUND);
GDK_NOTE (DRAW, g_print ("gdk_win32_draw_points: %s %d points\n",
_gdk_win32_drawable_description (drawable),
npoints));
/* The X11 version uses XDrawPoint(), which doesn't use the fill
* mode, so don't use generic_draw. But we should use the current
* function, so we can't use SetPixel(). Draw single-pixel
* rectangles (sigh).
*/
old_pen = SelectObject (hdc, GetStockObject (NULL_PEN));
for (i = 0; i < npoints; i++)
Rectangle (hdc, points[i].x, points[i].y,
points[i].x + 2, points[i].y + 2);
SelectObject (hdc, old_pen);
gdk_win32_hdc_release (drawable, gc, GDK_GC_FOREGROUND);
}
static void
draw_segments (GdkGCWin32 *gcwin32,
HDC hdc,
gint x_offset,
gint y_offset,
va_list args)
{
GdkSegment *segs;
gint nsegs;
gint i;
segs = va_arg (args, GdkSegment *);
nsegs = va_arg (args, gint);
if (x_offset != 0 || y_offset != 0)
{
/* must not modify in place, but could splice in the offset all below */
segs = g_memdup (segs, nsegs * sizeof (GdkSegment));
for (i = 0; i < nsegs; i++)
{
segs[i].x1 -= x_offset;
segs[i].y1 -= y_offset;
segs[i].x2 -= x_offset;
segs[i].y2 -= y_offset;
}
}
if (MUST_RENDER_DASHES_MANUALLY (gcwin32))
{
for (i = 0; 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;
render_line_vertical (gcwin32, segs[i].x1, y1, y2);
}
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;
render_line_horizontal (gcwin32, x1, x2, segs[i].y1);
}
else
GDI_CALL (MoveToEx, (hdc, segs[i].x1, segs[i].y1, NULL)) &&
GDI_CALL (LineTo, (hdc, segs[i].x2, segs[i].y2));
}
}
else
{
for (i = 0; i < nsegs; i++)
{
const GdkSegment *ps = &segs[i];
const int x1 = ps->x1, y1 = ps->y1;
int x2 = ps->x2, y2 = ps->y2;
GDK_NOTE (DRAW, g_print (" +%d+%d..+%d+%d", x1, y1, x2, y2));
GDI_CALL (MoveToEx, (hdc, x1, y1, NULL)) &&
GDI_CALL (LineTo, (hdc, x2, y2));
}
GDK_NOTE (DRAW, g_print ("\n"));
}
if (x_offset != 0 || y_offset != 0)
g_free (segs);
}
static void
gdk_win32_draw_segments (GdkDrawable *drawable,
GdkGC *gc,
GdkSegment *segs,
gint nsegs)
{
GdkRectangle bounds;
cairo_region_t *region;
gint i;
GDK_NOTE (DRAW, g_print ("gdk_win32_draw_segments: %s %d segs\n",
_gdk_win32_drawable_description (drawable),
nsegs));
bounds.x = G_MAXINT;
bounds.y = G_MAXINT;
bounds.width = 0;
bounds.height = 0;
for (i = 0; i < nsegs; i++)
{
bounds.x = MIN (bounds.x, segs[i].x1);
bounds.x = MIN (bounds.x, segs[i].x2);
bounds.y = MIN (bounds.y, segs[i].y1);
bounds.y = MIN (bounds.y, segs[i].y2);
}
for (i = 0; i < nsegs; i++)
{
bounds.width = MAX (bounds.width, segs[i].x1 - bounds.x);
bounds.width = MAX (bounds.width, segs[i].x2 - bounds.x);
bounds.height = MAX (bounds.height, segs[i].y1 - bounds.y);
bounds.height = MAX (bounds.height, segs[i].y2 - bounds.y);
}
region = widen_bounds (&bounds, GDK_GC_WIN32 (gc)->pen_width);
generic_draw (drawable, gc, GDK_GC_FOREGROUND | LINE_ATTRIBUTES,
draw_segments, region, segs, nsegs);
cairo_region_destroy (region);
}
static void
draw_lines (GdkGCWin32 *gcwin32,
HDC hdc,
gint x_offset,
gint y_offset,
va_list args)
{
POINT *pts;
gint npoints;
gint i;
pts = va_arg (args, POINT *);
npoints = va_arg (args, gint);
if (x_offset != 0 || y_offset != 0)
for (i = 0; i < npoints; i++)
{
pts[i].x -= x_offset;
pts[i].y -= y_offset;
}
if (MUST_RENDER_DASHES_MANUALLY (gcwin32))
{
for (i = 0; i < npoints - 1; i++)
{
if (pts[i].x == pts[i+1].x)
{
int y1, y2;
if (pts[i].y > pts[i+1].y)
y1 = pts[i+1].y, y2 = pts[i].y;
else
y1 = pts[i].y, y2 = pts[i+1].y;
render_line_vertical (gcwin32, pts[i].x, y1, y2);
}
else if (pts[i].y == pts[i+1].y)
{
int x1, x2;
if (pts[i].x > pts[i+1].x)
x1 = pts[i+1].x, x2 = pts[i].x;
else
x1 = pts[i].x, x2 = pts[i+1].x;
render_line_horizontal (gcwin32, x1, x2, pts[i].y);
}
else
GDI_CALL (MoveToEx, (hdc, pts[i].x, pts[i].y, NULL)) &&
GDI_CALL (LineTo, (hdc, pts[i+1].x, pts[i+1].y));
}
}
else
GDI_CALL (Polyline, (hdc, pts, npoints));
}
static void
gdk_win32_draw_lines (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints)
{
GdkRectangle bounds;
cairo_region_t *region;
POINT *pts;
int i;
GDK_NOTE (DRAW, g_print ("gdk_win32_draw_lines: %s %d points\n",
_gdk_win32_drawable_description (drawable),
npoints));
if (npoints < 2)
return;
bounds.x = G_MAXINT;
bounds.y = G_MAXINT;
bounds.width = 0;
bounds.height = 0;
pts = g_new (POINT, npoints);
for (i = 0; i < npoints; i++)
{
bounds.x = MIN (bounds.x, points[i].x);
bounds.y = MIN (bounds.y, points[i].y);
pts[i].x = points[i].x;
pts[i].y = points[i].y;
}
for (i = 0; i < npoints; i++)
{
bounds.width = MAX (bounds.width, points[i].x - bounds.x);
bounds.height = MAX (bounds.height, points[i].y - bounds.y);
}
region = widen_bounds (&bounds, GDK_GC_WIN32 (gc)->pen_width);
generic_draw (drawable, gc, GDK_GC_FOREGROUND | GDK_GC_BACKGROUND |
LINE_ATTRIBUTES,
draw_lines, region, pts, npoints);
cairo_region_destroy (region);
g_free (pts);
}
static void
blit_from_pixmap (gboolean use_fg_bg,
GdkDrawableImplWin32 *dest,
HDC hdc,
GdkPixmapImplWin32 *src,
GdkGC *gc,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
GdkGCWin32 *gcwin32 = GDK_GC_WIN32 (gc);
HDC srcdc;
HBITMAP holdbitmap;
RGBQUAD oldtable[256], newtable[256];
COLORREF bg, fg;
gint newtable_size = 0, oldtable_size = 0;
gboolean ok = TRUE;
GDK_NOTE (DRAW, g_print ("blit_from_pixmap\n"));
srcdc = _gdk_win32_drawable_acquire_dc (GDK_DRAWABLE (src));
if (!srcdc)
return;
if (!(holdbitmap = SelectObject (srcdc, ((GdkDrawableImplWin32 *) src)->handle)))
WIN32_GDI_FAILED ("SelectObject");
else
{
if (GDK_PIXMAP_OBJECT (src->parent_instance.wrapper)->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 (GDK_PIXMAP_OBJECT (src->parent_instance.wrapper)->depth == 1)
{
/* Blitting from an 1-bit pixmap */
gint bgix, fgix;
if (use_fg_bg)
{
bgix = _gdk_gc_get_bg_pixel (gc);
fgix = _gdk_gc_get_fg_pixel (gc);
}
else
{
bgix = 0;
fgix = 1;
}
if (GDK_IS_PIXMAP_IMPL_WIN32 (dest) &&
GDK_PIXMAP_OBJECT (dest->wrapper)->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 (!GDI_CALL (GetDIBColorTable, (hdc, bgix, 1, newtable)) ||
!GDI_CALL (GetDIBColorTable, (hdc, fgix, 1, newtable+1)))
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 (DRAW, 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 (!GDI_CALL (SetDIBColorTable, (srcdc, 0, newtable_size, newtable)))
ok = FALSE;
}
}
if (ok)
if (!BitBlt (hdc, xdest, ydest, width, height,
srcdc, xsrc, ysrc, rop2_to_rop3 (gcwin32->rop2)) &&
GetLastError () != ERROR_INVALID_HANDLE)
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));
GDI_CALL (SetDIBColorTable, (srcdc, 0, oldtable_size, oldtable));
}
GDI_CALL (SelectObject, (srcdc, holdbitmap));
}
_gdk_win32_drawable_release_dc (GDK_DRAWABLE (src));
}
static void
blit_inside_drawable (HDC hdc,
GdkGCWin32 *gcwin32,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
GDK_NOTE (DRAW, g_print ("blit_inside_drawable\n"));
GDI_CALL (BitBlt, (hdc, xdest, ydest, width, height,
hdc, xsrc, ysrc, rop2_to_rop3 (gcwin32->rop2)));
}
static void
blit_from_window (HDC hdc,
GdkGCWin32 *gcwin32,
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 (DRAW, 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));
}
GDI_CALL (BitBlt, (hdc, xdest, ydest, width, height,
srcdc, xsrc, ysrc, rop2_to_rop3 (gcwin32->rop2)));
if (holdpal != NULL)
GDI_CALL (SelectPalette, (srcdc, holdpal, FALSE));
GDI_CALL (ReleaseDC, (src->handle, srcdc));
}
void
_gdk_win32_blit (gboolean use_fg_bg,
GdkDrawableImplWin32 *draw_impl,
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 *src_impl = NULL;
gint src_width, src_height;
GDK_NOTE (DRAW, 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 (&draw_impl->parent_instance),
xdest, ydest,
use_fg_bg));
/* If blitting from the root window, take the multi-monitor offset
* into account.
*/
if (src == ((GdkWindowObject *)_gdk_root)->impl)
{
GDK_NOTE (DRAW, g_print ("... offsetting src coords\n"));
xsrc -= _gdk_offset_x;
ysrc -= _gdk_offset_y;
}
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 ();
if (GDK_IS_WINDOW_IMPL_WIN32 (draw_impl) &&
GDK_IS_PIXMAP_IMPL_WIN32 (src_impl))
{
GdkPixmapImplWin32 *src_pixmap = GDK_PIXMAP_IMPL_WIN32 (src_impl);
if (xsrc < 0)
{
width += xsrc;
xdest -= xsrc;
xsrc = 0;
}
if (ysrc < 0)
{
height += ysrc;
ydest -= ysrc;
ysrc = 0;
}
if (xsrc + width > src_pixmap->width)
width = src_pixmap->width - xsrc;
if (ysrc + height > src_pixmap->height)
height = src_pixmap->height - ysrc;
}
hdc = gdk_win32_hdc_get (&draw_impl->parent_instance, gc, GDK_GC_FOREGROUND);
gdk_drawable_get_size (src_impl->wrapper, &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 (DRAW, (GetRgnBox (outside_rgn, &r),
g_print ("... 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);
}
GDI_CALL (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 (DRAW, g_print ("... restricted to src: %dx%d@%+d%+d, "
"dest: @%+d%+d\n",
width, height, xsrc, ysrc,
xdest, ydest));
}
#endif
GDI_CALL (DeleteObject, (src_rgn));
GDI_CALL (DeleteObject, (draw_rgn));
}
if (draw_impl->handle == src_impl->handle)
blit_inside_drawable (hdc, GDK_GC_WIN32 (gc), xsrc, ysrc, xdest, ydest, width, height);
else if (GDK_IS_PIXMAP_IMPL_WIN32 (src_impl))
blit_from_pixmap (use_fg_bg, draw_impl, hdc,
(GdkPixmapImplWin32 *) src_impl, gc,
xsrc, ysrc, xdest, ydest, width, height);
else
blit_from_window (hdc, GDK_GC_WIN32 (gc), src_impl, xsrc, ysrc, xdest, ydest, width, height);
gdk_win32_hdc_release (&draw_impl->parent_instance, 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 void
gdk_win32_draw_pixbuf (GdkDrawable *drawable,
GdkGC *gc,
GdkPixbuf *pixbuf,
gint src_x,
gint src_y,
gint dest_x,
gint dest_y,
gint width,
gint height,
GdkRgbDither dither,
gint x_dither,
gint y_dither)
{
GdkDrawable *wrapper = GDK_DRAWABLE_IMPL_WIN32 (drawable)->wrapper;
GDK_DRAWABLE_CLASS (_gdk_drawable_impl_win32_parent_class)->draw_pixbuf (wrapper, gc, pixbuf,
src_x, src_y, dest_x, dest_y,
width, height,
dither, x_dither, y_dither);
}
/**
* _gdk_win32_drawable_acquire_dc
* @drawable: a Win32 #GdkDrawable implementation
*
* Gets a DC with the given drawable selected into
* it.
*
* Return value: The DC, on success. Otherwise
* %NULL. If this function succeeded
* _gdk_win32_drawable_release_dc() must be called
* release the DC when you are done using it.
**/
HDC
_gdk_win32_drawable_acquire_dc (GdkDrawable *drawable)
{
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
if (GDK_IS_WINDOW_IMPL_WIN32 (drawable) &&
GDK_WINDOW_DESTROYED (impl->wrapper))
return NULL;
if (!impl->hdc)
{
if (GDK_IS_PIXMAP_IMPL_WIN32 (impl))
{
impl->hdc = CreateCompatibleDC (NULL);
if (!impl->hdc)
WIN32_GDI_FAILED ("CreateCompatibleDC");
if (impl->hdc)
{
impl->saved_dc_bitmap = SelectObject (impl->hdc,
impl->handle);
if (!impl->saved_dc_bitmap)
{
WIN32_GDI_FAILED ("CreateCompatibleDC");
DeleteDC (impl->hdc);
impl->hdc = NULL;
}
}
}
else
{
impl->hdc = GetDC (impl->handle);
if (!impl->hdc)
WIN32_GDI_FAILED ("GetDC");
}
}
if (impl->hdc)
{
impl->hdc_count++;
return impl->hdc;
}
else
{
return NULL;
}
}
/**
* _gdk_win32_drawable_release_dc
* @drawable: a Win32 #GdkDrawable implementation
*
* Releases the reference count for the DC
* from _gdk_win32_drawable_acquire_dc()
**/
void
_gdk_win32_drawable_release_dc (GdkDrawable *drawable)
{
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
g_return_if_fail (impl->hdc_count > 0);
impl->hdc_count--;
if (impl->hdc_count == 0)
{
if (impl->saved_dc_bitmap)
{
GDI_CALL (SelectObject, (impl->hdc, impl->saved_dc_bitmap));
impl->saved_dc_bitmap = NULL;
}
if (impl->hdc)
{
if (GDK_IS_PIXMAP_IMPL_WIN32 (impl))
GDI_CALL (DeleteDC, (impl->hdc));
else
GDI_CALL (ReleaseDC, (impl->handle, impl->hdc));
impl->hdc = NULL;
}
}
}
cairo_surface_t *
_gdk_windowing_create_cairo_surface (GdkDrawable *drawable,
gint width,
gint height)
{
/* width and height are determined from the DC */
return gdk_win32_ref_cairo_surface (drawable);
}
static void
gdk_win32_cairo_surface_destroy (void *data)
{
GdkDrawableImplWin32 *impl = data;
_gdk_win32_drawable_release_dc (GDK_DRAWABLE (impl));
impl->cairo_surface = NULL;
}
static cairo_surface_t *
gdk_win32_ref_cairo_surface (GdkDrawable *drawable)
{
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
if (GDK_IS_WINDOW_IMPL_WIN32 (drawable) &&
GDK_WINDOW_DESTROYED (impl->wrapper))
return NULL;
if (!impl->cairo_surface)
{
HDC hdc = _gdk_win32_drawable_acquire_dc (drawable);
if (!hdc)
return NULL;
impl->cairo_surface = cairo_win32_surface_create (hdc);
cairo_surface_set_user_data (impl->cairo_surface, &gdk_win32_cairo_key,
drawable, gdk_win32_cairo_surface_destroy);
}
else
cairo_surface_reference (impl->cairo_surface);
return impl->cairo_surface;
}
void
_gdk_windowing_set_cairo_surface_size (cairo_surface_t *surface,
gint width,
gint height)
{
// Do nothing. The surface size is determined by the DC
}
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 GdkScreen*
gdk_win32_get_screen (GdkDrawable *drawable)
{
return gdk_screen_get_default ();
}
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);
}
/**
* _gdk_win32_drawable_finish
* @drawable: a Win32 #GdkDrawable implementation
*
* Releases any resources allocated internally for the drawable.
* This is called when the drawable becomes unusable
* (gdk_window_destroy() for a window, or the refcount going to
* zero for a pixmap.)
**/
void
_gdk_win32_drawable_finish (GdkDrawable *drawable)
{
GdkDrawableImplWin32 *impl = GDK_DRAWABLE_IMPL_WIN32 (drawable);
if (impl->cairo_surface)
{
cairo_surface_finish (impl->cairo_surface);
cairo_surface_set_user_data (impl->cairo_surface, &gdk_win32_cairo_key, NULL, NULL);
}
g_assert (impl->hdc_count == 0);
}
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