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 (at) 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 */ 34 struct WMcursor { 35 int unused; 36 }; 37 38 /* There isn't any implementation dependent data */ 39 void GS_FreeWMCursor(_THIS, WMcursor *cursor) 40 { 41 return; 42 } 43 44 /* There isn't any implementation dependent data */ 45 WMcursor *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 51 static 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 } 126 127 void GS_MoveWMCursor(_THIS, int x, int y) 128 { 129 GS_MoveCursor(this, SDL_cursor, x, y); 130 } 131 132 int 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
