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annotate src/video/gem/SDL_gemmouse.c @ 1585:980d2a0dc2a3

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Date: Tue, 4 Mar 2003 15:05:31 -0800 From: "Jim" Subject: [SDL] Frame Buffer patches... Okay I'm new at patch generation - so please tell me if there's a better way I could have done this. Attached are two patch files generated with 'cvs diff -u' SDL-fb-open-lock.patch applies to SDL_fbvideo.c Modifies the open loop to check /dev/fb/0 found on devfs... Modifies the lock code to return failure if the current virtual terminal is not the one opened for frame buffer writing... Lock would hang forever if switched away (ctrl-alt-F1) ... SDL-fb-mousedrv-screensave.patch applies to SDL_fbevents.c Switches default mouse mode based on SDL_MOUSEDRV - currently only accepts PS2 - otherwise default is MS Mouse. When the screen is switched - exisiting code (wrapped in ifdef SAVE_SCREEN_COTENTS) would save the wrong bit of the screen.... ( I run frame buffer 1600x1200, the size I requested was 800x600 - the save would save the top 800 lines (non biased) and restore them... Adding screen->offset fixed that ) However, if that option is not set, then a call to SDL_UpdateRect (full screen) is made. (which may have had it's contents changed since the screen is not entirely locked because of lock-failure patch) Jim [patches slightly tweaked for SDL 1.2.10]
author Sam Lantinga <slouken@libsdl.org>
date Wed, 22 Mar 2006 07:48:22 +0000
parents d910939febfa
children 782fd950bd46 417f2af2bd52
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /*
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25 * GEM Mouse manager
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26 *
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27 * Patrice Mandin
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28 */
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29
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30 #include <gem.h>
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31
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32 #include "SDL_mouse.h"
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33 #include "../../events/SDL_events_c.h"
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34 #include "../SDL_cursor_c.h"
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35 #include "SDL_gemmouse_c.h"
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36
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37 /* Defines */
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38
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39 /*#define DEBUG_VIDEO_GEM 1*/
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40
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41 #define MAXCURWIDTH 16
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42 #define MAXCURHEIGHT 16
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43
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44 /* The implementation dependent data for the window manager cursor */
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45 struct WMcursor {
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46 MFORM *mform_p;
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47 };
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48
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49
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50 void GEM_FreeWMCursor(_THIS, WMcursor *cursor)
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51 {
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52 if (cursor == NULL)
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53 return;
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54
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55 graf_mouse(ARROW, NULL);
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56
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57 if (cursor->mform_p != NULL)
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58 SDL_free(cursor->mform_p);
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59
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60 SDL_free(cursor);
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61 }
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62
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63 WMcursor *GEM_CreateWMCursor(_THIS,
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64 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
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65 {
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66 WMcursor *cursor;
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67 MFORM *new_mform;
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68 int i;
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69
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70 /* Check the size */
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71 if ( (w > MAXCURWIDTH) || (h > MAXCURHEIGHT) ) {
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72 SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
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73 MAXCURWIDTH, MAXCURHEIGHT);
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74 return(NULL);
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75 }
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76
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77 /* Allocate the cursor memory */
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78 cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor));
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79 if ( cursor == NULL ) {
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80 SDL_OutOfMemory();
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81 return(NULL);
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82 }
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83
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84 /* Allocate mform */
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85 new_mform = (MFORM *)SDL_malloc(sizeof(MFORM));
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86 if (new_mform == NULL) {
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87 SDL_free(cursor);
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88 SDL_OutOfMemory();
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89 return(NULL);
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90 }
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91
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92 cursor->mform_p = new_mform;
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93
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94 new_mform->mf_xhot = hot_x;
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95 new_mform->mf_yhot = hot_y;
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96 new_mform->mf_nplanes = 1;
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97 new_mform->mf_fg = 0;
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98 new_mform->mf_bg = 1;
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99
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100 for (i=0;i<MAXCURHEIGHT;i++) {
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101 new_mform->mf_mask[i]=0;
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102 new_mform->mf_data[i]=0;
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103 }
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104
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105 if (w<=8) {
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106 for (i=0;i<h;i++) {
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107 new_mform->mf_mask[i]= mask[i]<<8;
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108 new_mform->mf_data[i]= data[i]<<8;
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109 }
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110 } else {
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111 for (i=0;i<h;i++) {
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112 new_mform->mf_mask[i]= mask[i<<1]<<8 | mask[(i<<1)+1];
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113 new_mform->mf_data[i]= data[i<<1]<<8 | data[(i<<1)+1];
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114 }
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115 }
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116
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117 #ifdef DEBUG_VIDEO_GEM
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118 for (i=0; i<h ;i++) {
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119 printf("sdl:video:gem: cursor, line %d = 0x%04x\n", i, new_mform->mf_mask[i]);
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120 }
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121
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122 printf("sdl:video:gem: CreateWMCursor(): done\n");
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123 #endif
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124
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125 return cursor;
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126 }
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127
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128 int GEM_ShowWMCursor(_THIS, WMcursor *cursor)
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129 {
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130 /*
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131 if (cursor == NULL) {
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132 graf_mouse(M_OFF, NULL);
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133 } else if (cursor->mform_p) {
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134 graf_mouse(USER_DEF, cursor->mform_p);
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135 }
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136 */
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137 #ifdef DEBUG_VIDEO_GEM
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138 printf("sdl:video:gem: ShowWMCursor(0x%08x)\n", (long) cursor);
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139 #endif
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140
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141 return 1;
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142 }
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143
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144 #if 0
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145 void GEM_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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146 {
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147 /* This seems to work only on AES 3.4 (Falcon) */
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148
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149 EVNTREC warpevent;
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150
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151 warpevent.ap_event = APPEVNT_MOUSE;
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152 warpevent.ap_value = (x << 16) | y;
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153
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154 appl_tplay(&warpevent, 1, 1000);
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155 }
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156 #endif
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157
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158 void GEM_CheckMouseMode(_THIS)
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159 {
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160 /* If the mouse is hidden and input is grabbed, we use relative mode */
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161 if ( (!(SDL_cursorstate & CURSOR_VISIBLE)) &&
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162 /*(this->input_grab != SDL_GRAB_OFF) && */ /* Damn GEM can not grab */
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163 (SDL_GetAppState() & SDL_APPACTIVE) ) {
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164 GEM_mouse_relative = SDL_TRUE;
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165 } else {
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166 GEM_mouse_relative = SDL_FALSE;
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167 }
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168 }