1/*
2    SDL - Simple DirectMedia Layer
3    Copyright (C) 1997-2012 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    This library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14
15    You should have received a copy of the GNU Lesser General Public
16    License along with this library; if not, write to the Free Software
17    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18
19    Sam Lantinga
20    slouken@libsdl.org
21*/
22#include "SDL_config.h"
23
24#include <sys/ioctl.h>
25
26#include "SDL_mouse.h"
27#include "../../events/SDL_events_c.h"
28#include "../SDL_cursor_c.h"
29#include "SDL_gsvideo.h"
30#include "SDL_gsmouse_c.h"
31
32
33/* The implementation dependent data for the window manager cursor */
34struct WMcursor {
35	int unused;
36};
37
38/* There isn't any implementation dependent data */
39void GS_FreeWMCursor(_THIS, WMcursor *cursor)
40{
41	return;
42}
43
44/* There isn't any implementation dependent data */
45WMcursor *GS_CreateWMCursor(_THIS,
46		Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
47{
48	return((WMcursor *)0x01);
49}
50
51static void GS_MoveCursor(_THIS, SDL_Cursor *cursor, int x, int y)
52{
53	SDL_Surface *screen;
54	struct ps2_image image;
55	SDL_Rect area;
56	int mouse_y1, mouse_y2;
57	void *saved_pixels;
58	int screen_updated;
59
60	/* Lock so we don't interrupt an update with mouse motion */
61	SDL_LockCursor();
62
63	/* Make sure any pending DMA has completed */
64	if ( dma_pending ) {
65		ioctl(console_fd, PS2IOC_SENDQCT, 1);
66		dma_pending = 0;
67	}
68
69	/* Remove the cursor image from the DMA area */
70	screen = this->screen;
71	saved_pixels = screen->pixels;
72	screen->pixels = mapped_mem + screen->offset;
73	screen_updated = 0;
74	if ( cursor_drawn ) {
75		SDL_EraseCursorNoLock(screen);
76		cursor_drawn = 0;
77		screen_updated = 1;
78	}
79
80	/* Save the current mouse area */
81	SDL_MouseRect(&area);
82	mouse_y1 = area.y;
83	mouse_y2 = area.y+area.h;
84
85	/* Only draw the new cursor if there was one passed in */
86	if ( cursor ) {
87		/* Set the new location */
88		cursor->area.x = (x - cursor->hot_x);
89		cursor->area.y = (y - cursor->hot_y);
90
91		/* Draw the cursor at the new location */
92		if ( (SDL_cursorstate & CURSOR_VISIBLE) && screen->pixels ) {
93			SDL_DrawCursorNoLock(screen);
94			cursor_drawn = 1;
95			screen_updated = 1;
96		}
97	}
98	screen->pixels = saved_pixels;
99
100	/* Update the affected area of the screen */
101	if ( screen_updated ) {
102		SDL_MouseRect(&area);
103		if ( area.y < mouse_y1 ) {
104			mouse_y1 = area.y;
105		}
106		if ( (area.y+area.h) > mouse_y2 ) {
107			mouse_y2 = area.y+area.h;
108		}
109		image = screen_image;
110		image.y += screen->offset / screen->pitch + mouse_y1;
111		image.h = mouse_y2 - mouse_y1;
112		image.ptr = mapped_mem +
113		            (image.y - screen_image.y) * screen->pitch;
114		ioctl(console_fd, PS2IOC_LOADIMAGE, &image);
115
116		/* Need to scale offscreen image to TV output */
117		if ( image.y > 0 ) {
118			scaleimage_nonblock(console_fd,
119			                    tex_tags_mem, scale_tags_mem);
120		}
121	}
122
123	/* We're finished */
124	SDL_UnlockCursor();
125}
126
127void GS_MoveWMCursor(_THIS, int x, int y)
128{
129	GS_MoveCursor(this, SDL_cursor, x, y);
130}
131
132int GS_ShowWMCursor(_THIS, WMcursor *wmcursor)
133{
134	SDL_Cursor *cursor;
135	int x, y;
136
137	/* Draw the cursor at the appropriate location */
138	SDL_GetMouseState(&x, &y);
139	if ( wmcursor ) {
140		cursor = SDL_cursor;
141	} else {
142		cursor = NULL;
143	}
144	GS_MoveCursor(this, cursor, x, y);
145	return(1);
146}
147