1 /*
2 * Copyright © 2014 Red Hat, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Author:
24 * Adam Jackson <ajax@redhat.com>
25 */
26
27 #ifdef HAVE_DIX_CONFIG_H
28 #include <dix-config.h>
29 #endif
30 #include "ephyr.h"
31 #include "ephyrlog.h"
32 #include "hostx.h"
33 #include "cursorstr.h"
34 #include <xcb/render.h>
35 #include <xcb/xcb_renderutil.h>
36
37 static DevPrivateKeyRec ephyrCursorPrivateKey;
38
39 typedef struct _ephyrCursor {
40 xcb_cursor_t cursor;
41 } ephyrCursorRec, *ephyrCursorPtr;
42
43 static ephyrCursorPtr
ephyrGetCursor(CursorPtr cursor)44 ephyrGetCursor(CursorPtr cursor)
45 {
46 return dixGetPrivateAddr(&cursor->devPrivates, &ephyrCursorPrivateKey);
47 }
48
49 static void
ephyrRealizeCoreCursor(EphyrScrPriv * scr,CursorPtr cursor)50 ephyrRealizeCoreCursor(EphyrScrPriv *scr, CursorPtr cursor)
51 {
52 ephyrCursorPtr hw = ephyrGetCursor(cursor);
53 xcb_connection_t *conn = hostx_get_xcbconn();
54 xcb_pixmap_t source, mask;
55 xcb_image_t *image;
56 xcb_gcontext_t gc;
57 int w = cursor->bits->width, h = cursor->bits->height;
58 uint32_t gcmask = XCB_GC_FUNCTION |
59 XCB_GC_PLANE_MASK |
60 XCB_GC_FOREGROUND |
61 XCB_GC_BACKGROUND |
62 XCB_GC_CLIP_MASK;
63 uint32_t val[] = {
64 XCB_GX_COPY, /* function */
65 ~0, /* planemask */
66 1L, /* foreground */
67 0L, /* background */
68 None, /* clipmask */
69 };
70
71 source = xcb_generate_id(conn);
72 mask = xcb_generate_id(conn);
73 xcb_create_pixmap(conn, 1, source, scr->win, w, h);
74 xcb_create_pixmap(conn, 1, mask, scr->win, w, h);
75
76 gc = xcb_generate_id(conn);
77 xcb_create_gc(conn, gc, source, gcmask, val);
78
79 image = xcb_image_create_native(conn, w, h, XCB_IMAGE_FORMAT_XY_BITMAP,
80 1, NULL, ~0, NULL);
81 image->data = cursor->bits->source;
82 xcb_image_put(conn, source, gc, image, 0, 0, 0);
83 xcb_image_destroy(image);
84
85 image = xcb_image_create_native(conn, w, h, XCB_IMAGE_FORMAT_XY_BITMAP,
86 1, NULL, ~0, NULL);
87 image->data = cursor->bits->mask;
88 xcb_image_put(conn, mask, gc, image, 0, 0, 0);
89 xcb_image_destroy(image);
90
91 xcb_free_gc(conn, gc);
92
93 hw->cursor = xcb_generate_id(conn);
94 xcb_create_cursor(conn, hw->cursor, source, mask,
95 cursor->foreRed, cursor->foreGreen, cursor->foreBlue,
96 cursor->backRed, cursor->backGreen, cursor->backBlue,
97 cursor->bits->xhot, cursor->bits->yhot);
98
99 xcb_free_pixmap(conn, source);
100 xcb_free_pixmap(conn, mask);
101 }
102
103 static xcb_render_pictformat_t
get_argb_format(void)104 get_argb_format(void)
105 {
106 static xcb_render_pictformat_t format;
107 if (format == None) {
108 xcb_connection_t *conn = hostx_get_xcbconn();
109 xcb_render_query_pict_formats_cookie_t cookie;
110 xcb_render_query_pict_formats_reply_t *formats;
111
112 cookie = xcb_render_query_pict_formats(conn);
113 formats =
114 xcb_render_query_pict_formats_reply(conn, cookie, NULL);
115
116 format =
117 xcb_render_util_find_standard_format(formats,
118 XCB_PICT_STANDARD_ARGB_32)->id;
119
120 free(formats);
121 }
122
123 return format;
124 }
125
126 static void
ephyrRealizeARGBCursor(EphyrScrPriv * scr,CursorPtr cursor)127 ephyrRealizeARGBCursor(EphyrScrPriv *scr, CursorPtr cursor)
128 {
129 ephyrCursorPtr hw = ephyrGetCursor(cursor);
130 xcb_connection_t *conn = hostx_get_xcbconn();
131 xcb_gcontext_t gc;
132 xcb_pixmap_t source;
133 xcb_render_picture_t picture;
134 xcb_image_t *image;
135 int w = cursor->bits->width, h = cursor->bits->height;
136
137 /* dix' storage is PICT_a8r8g8b8 */
138 source = xcb_generate_id(conn);
139 xcb_create_pixmap(conn, 32, source, scr->win, w, h);
140
141 gc = xcb_generate_id(conn);
142 xcb_create_gc(conn, gc, source, 0, NULL);
143 image = xcb_image_create_native(conn, w, h, XCB_IMAGE_FORMAT_Z_PIXMAP,
144 32, NULL, ~0, NULL);
145 image->data = (void *)cursor->bits->argb;
146 xcb_image_put(conn, source, gc, image, 0, 0, 0);
147 xcb_free_gc(conn, gc);
148 xcb_image_destroy(image);
149
150 picture = xcb_generate_id(conn);
151 xcb_render_create_picture(conn, picture, source, get_argb_format(),
152 0, NULL);
153 xcb_free_pixmap(conn, source);
154
155 hw->cursor = xcb_generate_id(conn);
156 xcb_render_create_cursor(conn, hw->cursor, picture,
157 cursor->bits->xhot, cursor->bits->yhot);
158
159 xcb_render_free_picture(conn, picture);
160 }
161
162 static Bool
can_argb_cursor(void)163 can_argb_cursor(void)
164 {
165 static const xcb_render_query_version_reply_t *v;
166
167 if (!v)
168 v = xcb_render_util_query_version(hostx_get_xcbconn());
169
170 return v->major_version == 0 && v->minor_version >= 5;
171 }
172
173 static Bool
ephyrRealizeCursor(DeviceIntPtr dev,ScreenPtr screen,CursorPtr cursor)174 ephyrRealizeCursor(DeviceIntPtr dev, ScreenPtr screen, CursorPtr cursor)
175 {
176 KdScreenPriv(screen);
177 KdScreenInfo *kscr = pScreenPriv->screen;
178 EphyrScrPriv *scr = kscr->driver;
179
180 if (cursor->bits->argb && can_argb_cursor())
181 ephyrRealizeARGBCursor(scr, cursor);
182 else
183 {
184 ephyrRealizeCoreCursor(scr, cursor);
185 }
186 return TRUE;
187 }
188
189 static Bool
ephyrUnrealizeCursor(DeviceIntPtr dev,ScreenPtr screen,CursorPtr cursor)190 ephyrUnrealizeCursor(DeviceIntPtr dev, ScreenPtr screen, CursorPtr cursor)
191 {
192 ephyrCursorPtr hw = ephyrGetCursor(cursor);
193
194 if (hw->cursor) {
195 xcb_free_cursor(hostx_get_xcbconn(), hw->cursor);
196 hw->cursor = None;
197 }
198
199 return TRUE;
200 }
201
202 static void
ephyrSetCursor(DeviceIntPtr dev,ScreenPtr screen,CursorPtr cursor,int x,int y)203 ephyrSetCursor(DeviceIntPtr dev, ScreenPtr screen, CursorPtr cursor, int x,
204 int y)
205 {
206 KdScreenPriv(screen);
207 KdScreenInfo *kscr = pScreenPriv->screen;
208 EphyrScrPriv *scr = kscr->driver;
209 uint32_t attr = None;
210
211 if (cursor)
212 attr = ephyrGetCursor(cursor)->cursor;
213 else
214 attr = hostx_get_empty_cursor();
215
216 xcb_change_window_attributes(hostx_get_xcbconn(), scr->win,
217 XCB_CW_CURSOR, &attr);
218 xcb_flush(hostx_get_xcbconn());
219 }
220
221 static void
ephyrMoveCursor(DeviceIntPtr dev,ScreenPtr screen,int x,int y)222 ephyrMoveCursor(DeviceIntPtr dev, ScreenPtr screen, int x, int y)
223 {
224 }
225
226 static Bool
ephyrDeviceCursorInitialize(DeviceIntPtr dev,ScreenPtr screen)227 ephyrDeviceCursorInitialize(DeviceIntPtr dev, ScreenPtr screen)
228 {
229 return TRUE;
230 }
231
232 static void
ephyrDeviceCursorCleanup(DeviceIntPtr dev,ScreenPtr screen)233 ephyrDeviceCursorCleanup(DeviceIntPtr dev, ScreenPtr screen)
234 {
235 }
236
237 miPointerSpriteFuncRec EphyrPointerSpriteFuncs = {
238 ephyrRealizeCursor,
239 ephyrUnrealizeCursor,
240 ephyrSetCursor,
241 ephyrMoveCursor,
242 ephyrDeviceCursorInitialize,
243 ephyrDeviceCursorCleanup
244 };
245
246 Bool
ephyrCursorInit(ScreenPtr screen)247 ephyrCursorInit(ScreenPtr screen)
248 {
249 if (!dixRegisterPrivateKey(&ephyrCursorPrivateKey, PRIVATE_CURSOR_BITS,
250 sizeof(ephyrCursorRec)))
251 return FALSE;
252
253 miPointerInitialize(screen,
254 &EphyrPointerSpriteFuncs,
255 &ephyrPointerScreenFuncs, FALSE);
256
257 return TRUE;
258 }
259