1 /* cairo - a vector graphics library with display and print output
2 *
3 * Copyright © 2005 Red Hat, Inc
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it either under the terms of the GNU Lesser General Public
7 * License version 2.1 as published by the Free Software Foundation
8 * (the "LGPL") or, at your option, under the terms of the Mozilla
9 * Public License Version 1.1 (the "MPL"). If you do not alter this
10 * notice, a recipient may use your version of this file under either
11 * the MPL or the LGPL.
12 *
13 * You should have received a copy of the LGPL along with this library
14 * in the file COPYING-LGPL-2.1; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
16 * You should have received a copy of the MPL along with this library
17 * in the file COPYING-MPL-1.1
18 *
19 * The contents of this file are subject to the Mozilla Public License
20 * Version 1.1 (the "License"); you may not use this file except in
21 * compliance with the License. You may obtain a copy of the License at
22 * http://www.mozilla.org/MPL/
23 *
24 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
25 * OF ANY KIND, either express or implied. See the LGPL or the MPL for
26 * the specific language governing rights and limitations.
27 *
28 * The Original Code is the cairo graphics library.
29 *
30 * The Initial Developer of the Original Code is Red Hat, Inc.
31 *
32 * Contributor(s):
33 * Owen Taylor <otaylor@redhat.com>
34 */
35
36 #ifndef CAIRO_WIN32_PRIVATE_H
37 #define CAIRO_WIN32_PRIVATE_H
38
39 #include "cairo-win32.h"
40 #include "cairoint.h"
41 #include "cairo-surface-clipper-private.h"
42
43 #ifndef SHADEBLENDCAPS
44 #define SHADEBLENDCAPS 120
45 #endif
46 #ifndef SB_NONE
47 #define SB_NONE 0
48 #endif
49
50 #define WIN32_FONT_LOGICAL_SCALE 32
51
52 typedef struct _cairo_win32_surface {
53 cairo_surface_t base;
54
55 cairo_format_t format;
56
57 HDC dc;
58
59 /* We create off-screen surfaces as DIBs or DDBs, based on what we created
60 * originally*/
61 HBITMAP bitmap;
62 cairo_bool_t is_dib;
63
64 /* Used to save the initial 1x1 monochrome bitmap for the DC to
65 * select back into the DC before deleting the DC and our
66 * bitmap. For Windows XP, this doesn't seem to be necessary
67 * ... we can just delete the DC and that automatically unselects
68 * out bitmap. But it's standard practice so apparently is needed
69 * on some versions of Windows.
70 */
71 HBITMAP saved_dc_bitmap;
72
73 cairo_surface_t *image;
74
75 cairo_rectangle_int_t extents;
76
77 /* Initial clip bits
78 * We need these kept around so that we maintain
79 * whatever clip was set on the original DC at creation
80 * time when cairo is asked to reset the surface clip.
81 */
82 cairo_rectangle_int_t clip_rect;
83 HRGN initial_clip_rgn;
84 cairo_bool_t had_simple_clip;
85 cairo_region_t *clip_region;
86
87 /* For path clipping to the printing-surface */
88 cairo_surface_clipper_t clipper;
89
90 /* Surface DC flags */
91 uint32_t flags;
92
93 /* printing surface bits */
94 cairo_paginated_mode_t paginated_mode;
95 cairo_content_t content;
96 cairo_bool_t path_empty;
97 cairo_bool_t has_ctm;
98 cairo_matrix_t ctm;
99 cairo_bool_t has_gdi_ctm;
100 cairo_matrix_t gdi_ctm;
101 HBRUSH brush, old_brush;
102 cairo_scaled_font_subsets_t *font_subsets;
103 } cairo_win32_surface_t;
104
105 /* Surface DC flag values */
106 enum {
107 /* If this is a surface created for printing or not */
108 CAIRO_WIN32_SURFACE_FOR_PRINTING = (1<<0),
109
110 /* Whether the DC is a display DC or not */
111 CAIRO_WIN32_SURFACE_IS_DISPLAY = (1<<1),
112
113 /* Whether we can use BitBlt with this surface */
114 CAIRO_WIN32_SURFACE_CAN_BITBLT = (1<<2),
115
116 /* Whether we can use AlphaBlend with this surface */
117 CAIRO_WIN32_SURFACE_CAN_ALPHABLEND = (1<<3),
118
119 /* Whether we can use StretchBlt with this surface */
120 CAIRO_WIN32_SURFACE_CAN_STRETCHBLT = (1<<4),
121
122 /* Whether we can use StretchDIBits with this surface */
123 CAIRO_WIN32_SURFACE_CAN_STRETCHDIB = (1<<5),
124
125 /* Whether we can use GradientFill rectangles with this surface */
126 CAIRO_WIN32_SURFACE_CAN_RECT_GRADIENT = (1<<6),
127
128 /* Whether we can use the CHECKJPEGFORMAT escape function */
129 CAIRO_WIN32_SURFACE_CAN_CHECK_JPEG = (1<<7),
130
131 /* Whether we can use the CHECKJPEGFORMAT escape function */
132 CAIRO_WIN32_SURFACE_CAN_CHECK_PNG = (1<<8),
133 };
134
135 cairo_status_t
136 _cairo_win32_print_gdi_error (const char *context);
137
138 cairo_bool_t
139 _cairo_surface_is_win32 (cairo_surface_t *surface);
140
141 cairo_bool_t
142 _cairo_surface_is_win32_printing (cairo_surface_t *surface);
143
144 cairo_status_t
145 _cairo_win32_surface_finish (void *abstract_surface);
146
147 cairo_bool_t
148 _cairo_win32_surface_get_extents (void *abstract_surface,
149 cairo_rectangle_int_t *rectangle);
150
151 uint32_t
152 _cairo_win32_flags_for_dc (HDC dc);
153
154 cairo_status_t
155 _cairo_win32_surface_set_clip_region (void *abstract_surface,
156 cairo_region_t *region);
157
158 cairo_int_status_t
159 _cairo_win32_surface_show_glyphs (void *surface,
160 cairo_operator_t op,
161 const cairo_pattern_t *source,
162 cairo_glyph_t *glyphs,
163 int num_glyphs,
164 cairo_scaled_font_t *scaled_font,
165 cairo_clip_t *clip,
166 int *remaining_glyphs);
167
168 cairo_surface_t *
169 _cairo_win32_surface_create_similar (void *abstract_src,
170 cairo_content_t content,
171 int width,
172 int height);
173
174 cairo_status_t
175 _cairo_win32_surface_clone_similar (void *abstract_surface,
176 cairo_surface_t *src,
177 cairo_content_t content,
178 int src_x,
179 int src_y,
180 int width,
181 int height,
182 int *clone_offset_x,
183 int *clone_offset_y,
184 cairo_surface_t **clone_out);
185
186 static inline void
_cairo_matrix_to_win32_xform(const cairo_matrix_t * m,XFORM * xform)187 _cairo_matrix_to_win32_xform (const cairo_matrix_t *m,
188 XFORM *xform)
189 {
190 xform->eM11 = (FLOAT) m->xx;
191 xform->eM21 = (FLOAT) m->xy;
192 xform->eM12 = (FLOAT) m->yx;
193 xform->eM22 = (FLOAT) m->yy;
194 xform->eDx = (FLOAT) m->x0;
195 xform->eDy = (FLOAT) m->y0;
196 }
197
198 cairo_int_status_t
199 _cairo_win32_save_initial_clip (HDC dc, cairo_win32_surface_t *surface);
200
201 cairo_int_status_t
202 _cairo_win32_restore_initial_clip (cairo_win32_surface_t *surface);
203
204 void
205 _cairo_win32_debug_dump_hrgn (HRGN rgn, char *header);
206
207 cairo_bool_t
208 _cairo_win32_scaled_font_is_type1 (cairo_scaled_font_t *scaled_font);
209
210 cairo_bool_t
211 _cairo_win32_scaled_font_is_bitmap (cairo_scaled_font_t *scaled_font);
212
213 #endif /* CAIRO_WIN32_PRIVATE_H */
214