This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_pgvideo.c
389 lines (329 loc) · 11.8 KB
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2006 Sam Lantinga
4
5
This library is free software; you can redistribute it and/or
6
modify it under the terms of the GNU Lesser General Public
7
License as published by the Free Software Foundation; either
8
version 2.1 of the License, or (at your option) any later version.
9
10
11
12
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
13
Lesser General Public License for more details.
14
15
16
17
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19
20
21
22
23
24
Sam Lantinga
slouken@libsdl.org
Micah Dowty
micahjd@users.sourceforge.net
*/
25
#include "SDL_config.h"
26
27
28
#include "SDL_video.h"
#include "SDL_mouse.h"
29
30
31
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
32
33
34
35
36
37
38
#include "SDL_pgvideo.h"
#include "SDL_pgevents_c.h"
#define PGVID_DRIVER_NAME "picogui"
/* Initialization/Query functions */
39
40
41
42
43
44
45
46
static int PG_VideoInit (_THIS, SDL_PixelFormat * vformat);
static SDL_Rect **PG_ListModes (_THIS, SDL_PixelFormat * format,
Uint32 flags);
static SDL_Surface *PG_SetVideoMode (_THIS, SDL_Surface * current, int width,
int height, int bpp, Uint32 flags);
static int PG_SetColors (_THIS, int firstcolor, int ncolors,
SDL_Color * colors);
static void PG_VideoQuit (_THIS);
47
48
/* Hardware surface functions */
49
50
51
52
static int PG_AllocHWSurface (_THIS, SDL_Surface * surface);
static int PG_LockHWSurface (_THIS, SDL_Surface * surface);
static void PG_UnlockHWSurface (_THIS, SDL_Surface * surface);
static void PG_FreeHWSurface (_THIS, SDL_Surface * surface);
53
54
/* etc. */
55
static void PG_UpdateRects (_THIS, int numrects, SDL_Rect * rects);
56
57
// The implementation dependent data for the window manager cursor
58
59
60
61
62
struct WMcursor
{
/* Our cursor is a PicoGUI theme */
pghandle theme;
};
63
64
/* WM functions */
65
66
67
void PG_SetCaption (_THIS, const char *title, const char *icon);
WMcursor *PG_CreateWMCursor (_THIS, Uint8 * data, Uint8 * mask,
int w, int h, int hot_x, int hot_y);
68
void PG_FreeWMCursor (_THIS, WMcursor * cursor);
69
void PG_WarpWMCursor (_THIS, Uint16 x, Uint16 y);
70
71
72
73
int PG_ShowWMCursor (_THIS, WMcursor * cursor);
/* PicoGUI driver bootstrap functions */
74
75
static int
PG_Available (void)
76
{
77
78
79
80
81
82
83
/* FIXME: The current client lib doesn't give a way to see if the picogui
* server is reachable without causing a fatal error if it isn't.
* This should be fixed in cli_c2, but until then assume we can
* connect. Since more common drivers like X11 are probed first anyway,
* this shouldn't be a huge problem.
*/
return (1);
84
85
}
86
87
static void
PG_DeleteDevice (SDL_VideoDevice * device)
88
{
89
90
SDL_free (device->hidden);
SDL_free (device);
91
92
}
93
94
static SDL_VideoDevice *
PG_CreateDevice (int devindex)
95
{
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
SDL_VideoDevice *device;
/* Initialize all variables that we clean on shutdown */
device = (SDL_VideoDevice *) SDL_malloc (sizeof (SDL_VideoDevice));
if (device) {
SDL_memset (device, 0, (sizeof *device));
device->hidden = (struct SDL_PrivateVideoData *)
SDL_malloc ((sizeof *device->hidden));
}
if ((device == NULL) || (device->hidden == NULL)) {
SDL_OutOfMemory ();
if (device) {
SDL_free (device);
}
return (0);
}
SDL_memset (device->hidden, 0, (sizeof *device->hidden));
/* Set the function pointers */
device->VideoInit = PG_VideoInit;
device->ListModes = PG_ListModes;
device->SetVideoMode = PG_SetVideoMode;
device->CreateYUVOverlay = NULL;
device->SetColors = PG_SetColors;
device->UpdateRects = PG_UpdateRects;
device->VideoQuit = PG_VideoQuit;
device->AllocHWSurface = PG_AllocHWSurface;
device->CheckHWBlit = NULL;
device->FillHWRect = NULL;
device->SetHWColorKey = NULL;
device->SetHWAlpha = NULL;
device->LockHWSurface = PG_LockHWSurface;
device->UnlockHWSurface = PG_UnlockHWSurface;
device->FlipHWSurface = NULL;
device->FreeHWSurface = PG_FreeHWSurface;
device->SetCaption = PG_SetCaption;
device->SetIcon = NULL;
device->IconifyWindow = NULL;
device->GrabInput = NULL;
device->PumpEvents = PG_PumpEvents;
device->InitOSKeymap = PG_InitOSKeymap;
device->ShowWMCursor = PG_ShowWMCursor;
device->CreateWMCursor = PG_CreateWMCursor;
device->FreeWMCursor = PG_FreeWMCursor;
device->WarpWMCursor = PG_WarpWMCursor;
device->free = PG_DeleteDevice;
return device;
147
148
149
}
VideoBootStrap PG_bootstrap = {
150
151
PGVID_DRIVER_NAME, "PicoGUI SDL driver",
PG_Available, PG_CreateDevice
152
153
154
};
155
156
int
PG_VideoInit (_THIS, SDL_PixelFormat * vformat)
157
{
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
/* Connect to the PicoGUI server. No way to process command line args yet,
* but since this is based on SHM it's not important to be able to specify
* a remote PicoGUI server.
*
* FIXME: Another nitpick about the current client lib is there's no
* clean way to indicate that command line args are not available.
*/
pgInit (0, (char **) "");
this->hidden->mi = *pgGetVideoMode ();
/* Create a picogui application and canvas. We'll populate the canvas later. */
this->hidden->wApp = pgRegisterApp (PG_APP_NORMAL, "SDL", 0);
this->hidden->wCanvas = pgNewWidget (PG_WIDGET_CANVAS, 0, 0);
pgSetWidget (PGDEFAULT, PG_WP_SIDE, PG_S_ALL, 0);
PG_InitEvents (this);
/* Determine the current screen size */
this->info.current_w = this->hidden->mi.lxres;
this->info.current_h = this->hidden->mi.lyres;
/* Determine the screen depth.
* We change this during the SDL_SetVideoMode implementation...
* Round up to the nearest Bytes per pixel
*/
vformat->BitsPerPixel = this->hidden->mi.bpp;
vformat->BytesPerPixel = this->hidden->mi.bpp >> 3;
if (this->hidden->mi.bpp & 7)
vformat->BytesPerPixel++;
/* We're done! */
return (0);
190
191
}
192
193
SDL_Rect **
PG_ListModes (_THIS, SDL_PixelFormat * format, Uint32 flags)
194
{
195
return (SDL_Rect **) - 1;
196
197
}
198
199
200
SDL_Surface *
PG_SetVideoMode (_THIS, SDL_Surface * current,
int width, int height, int bpp, Uint32 flags)
201
{
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
if (this->hidden->bitmap) {
/* Free old bitmap */
if (current->pixels) {
shmdt (current->pixels);
current->pixels = NULL;
}
pgDelete (this->hidden->bitmap);
}
/* Allocate the new pixel format for the screen */
if (!SDL_ReallocFormat (current, bpp, 0, 0, 0, 0)) {
SDL_SetError
("Couldn't allocate new pixel format for requested mode");
return (NULL);
}
/* Create a new picogui bitmap */
this->hidden->bitmap = pgCreateBitmap (width, height);
this->hidden->shm = *pgMakeSHMBitmap (this->hidden->bitmap);
current->pixels = shmat (shmget (this->hidden->shm.shm_key,
this->hidden->shm.shm_length, 0), NULL,
0);
/* Reset the canvas, and draw persistent and incremental grops.
* Use mapping and offsets to center it.
*/
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_NUKE, 0);
/* 0. Set the source position during incremental rendering
*/
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_GROP, 5, PG_GROP_SETSRC, 0, 0,
0, 0);
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1,
PG_GROPF_INCREMENTAL);
/* 1. Incremental bitmap rendering
*/
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
0, 0, 0, 0, this->hidden->bitmap);
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1,
PG_GROPF_INCREMENTAL);
/* 2. Normal bitmap rendering
*/
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
0, 0, this->hidden->shm.width, this->hidden->shm.height,
this->hidden->bitmap);
/* Set up the new mode framebuffer */
current->flags = 0;
current->w = this->hidden->shm.width;
current->h = this->hidden->shm.height;
current->pitch = this->hidden->shm.pitch;
/* Set up pixel format */
current->format->BitsPerPixel = this->hidden->shm.bpp;
current->format->BytesPerPixel = this->hidden->shm.bpp >> 3;
if (this->hidden->shm.bpp & 7)
current->format->BytesPerPixel++;
current->format->palette = NULL;
current->format->Rmask = this->hidden->shm.red_mask;
current->format->Gmask = this->hidden->shm.green_mask;
current->format->Bmask = this->hidden->shm.blue_mask;
current->format->Amask = this->hidden->shm.alpha_mask;
current->format->Rshift = this->hidden->shm.red_shift;
current->format->Gshift = this->hidden->shm.green_shift;
current->format->Bshift = this->hidden->shm.blue_shift;
current->format->Ashift = this->hidden->shm.alpha_shift;
current->format->Rloss = 8 - this->hidden->shm.red_length;
current->format->Gloss = 8 - this->hidden->shm.green_length;
current->format->Bloss = 8 - this->hidden->shm.blue_length;
current->format->Aloss = 8 - this->hidden->shm.alpha_length;
/* Draw the app */
pgUpdate ();
/* We're done */
return (current);
281
282
283
}
/* We don't actually allow hardware surfaces other than the main one */
284
285
static int
PG_AllocHWSurface (_THIS, SDL_Surface * surface)
286
{
287
return (-1);
288
}
289
290
static void
PG_FreeHWSurface (_THIS, SDL_Surface * surface)
291
{
292
return;
293
294
295
}
/* We need to wait for vertical retrace on page flipped displays */
296
297
static int
PG_LockHWSurface (_THIS, SDL_Surface * surface)
298
{
299
return (0);
300
301
}
302
303
static void
PG_UnlockHWSurface (_THIS, SDL_Surface * surface)
304
{
305
return;
306
307
}
308
309
static void
PG_UpdateRects (_THIS, int numrects, SDL_Rect * rects)
310
{
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
int i;
for (i = 0; i < numrects; i++) {
if (rects[i].w <= 0 || rects[i].h <= 0)
continue;
/* Schedule an incremental update for this rectangle, using
* the canvas gropnodes we've loaded beforehand.
*/
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 0);
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4,
rects[i].x, rects[i].y, rects[i].w, rects[i].h);
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 1);
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4,
rects[i].x, rects[i].y, rects[i].w, rects[i].h);
/* Go perform the update */
pgWriteCmd (this->hidden->wCanvas, PGCANVAS_INCREMENTAL, 0);
pgSubUpdate (this->hidden->wCanvas);
}
331
332
}
333
334
int
PG_SetColors (_THIS, int firstcolor, int ncolors, SDL_Color * colors)
335
{
336
337
/* do nothing of note. */
return (1);
338
339
340
341
342
}
/* Note: If we are terminated, this could be called in the middle of
another SDL video routine -- notably UpdateRects.
*/
343
344
void
PG_VideoQuit (_THIS)
345
{
346
347
348
349
350
351
352
if (this->screen->pixels != NULL) {
shmdt (this->screen->pixels);
this->screen->pixels = NULL;
pgDelete (this->hidden->bitmap);
}
pgDelete (this->hidden->wCanvas);
pgDelete (this->hidden->wApp);
353
354
}
355
356
void
PG_SetCaption (_THIS, const char *title, const char *icon)
357
{
358
359
360
if (title != NULL)
pgReplaceText (this->hidden->wApp, title);
pgUpdate ();
361
362
363
364
}
/* FIXME: The cursor stuff isn't implemented yet! */
365
366
367
WMcursor *
PG_CreateWMCursor (_THIS, Uint8 * data, Uint8 * mask,
int w, int h, int hot_x, int hot_y)
368
{
369
370
static WMcursor dummy;
return &dummy;
371
372
}
373
374
void
PG_FreeWMCursor (_THIS, WMcursor * cursor)
375
376
377
{
}
378
379
void
PG_WarpWMCursor (_THIS, Uint16 x, Uint16 y)
380
381
382
{
}
383
384
int
PG_ShowWMCursor (_THIS, WMcursor * cursor)
385
{
386
return 1;
387
}
388
389
/* vi: set ts=4 sw=4 expandtab: */