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annotate src/video/gem/SDL_gemmouse.c @ 281:c5010ab8ba35

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Added initial support for Atari (thanks Patrice!)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 17 Feb 2002 19:54:28 +0000
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children f6ffac90895c
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281
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /*
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29 * GEM Mouse manager
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30 *
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31 * Patrice Mandin
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32 */
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33
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34 #include <stdlib.h>
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35
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36 #include <gem.h>
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37
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38 #include "SDL_error.h"
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39 #include "SDL_mouse.h"
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40 #include "SDL_events_c.h"
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41 #include "SDL_cursor_c.h"
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42 #include "SDL_gemmouse_c.h"
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43
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44 /* Defines */
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45
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46 #define MAXCURWIDTH 16
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47 #define MAXCURHEIGHT 16
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48
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49 /* The implementation dependent data for the window manager cursor */
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50 struct WMcursor {
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51 MFORM *mform_p;
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52 };
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53
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54
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55 void GEM_FreeWMCursor(_THIS, WMcursor *cursor)
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56 {
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57 if (cursor == NULL)
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58 return;
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59
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60 graf_mouse(ARROW, NULL);
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61
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62 if (cursor->mform_p != NULL)
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63 free(cursor->mform_p);
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64
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65 free(cursor);
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66 }
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67
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68 WMcursor *GEM_CreateWMCursor(_THIS,
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69 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
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70 {
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71 WMcursor *cursor;
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72 MFORM *new_mform;
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73 int i;
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74
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75 /* Check the size */
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76 if ( (w > MAXCURWIDTH) || (h > MAXCURHEIGHT) ) {
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77 SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
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78 MAXCURWIDTH, MAXCURHEIGHT);
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79 return(NULL);
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80 }
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81
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82 /* Allocate the cursor memory */
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83 cursor = (WMcursor *)malloc(sizeof(WMcursor));
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84 if ( cursor == NULL ) {
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85 SDL_OutOfMemory();
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86 return(NULL);
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87 }
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88
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89 /* Allocate mform */
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90 new_mform = (MFORM *)malloc(sizeof(MFORM));
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91 if (new_mform == NULL) {
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92 free(cursor);
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93 SDL_OutOfMemory();
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94 return(NULL);
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95 }
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96
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97 cursor->mform_p = new_mform;
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98
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99 new_mform->mf_xhot = hot_x;
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100 new_mform->mf_yhot = hot_y;
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101 new_mform->mf_nplanes = 1;
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102 new_mform->mf_fg = 0;
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103 new_mform->mf_bg = 1;
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104
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105 for (i=0;i<MAXCURHEIGHT;i++)
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106 {
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107 new_mform->mf_mask[i]=0;
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108 new_mform->mf_data[i]=0;
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109 }
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110
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111 if (w<=8) {
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112 for (i=0;i<h;i++)
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113 {
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114 new_mform->mf_mask[i]= mask[i]<<8;
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115 new_mform->mf_data[i]= data[i]<<8;
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116 }
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117 } else {
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118 for (i=0;i<h;i++)
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119 {
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120 new_mform->mf_mask[i]= mask[i<<1]<<8 | mask[(i<<1)+1];
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121 new_mform->mf_data[i]= data[i<<1]<<8 | data[(i<<1)+1];
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122 }
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123 }
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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 if (cursor == NULL) {
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131 graf_mouse(M_OFF, NULL);
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132 } else if (cursor->mform_p) {
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133 graf_mouse(USER_DEF, cursor->mform_p);
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134 }
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135
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136 return 1;
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137 }
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138
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139 void GEM_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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140 {
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141 EVNTREC warpevent;
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142
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143 warpevent.ap_event = APPEVNT_MOUSE;
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144 warpevent.ap_value = (y << 16) | x;
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145
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146 appl_tplay(&warpevent, 1, 1000);
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147 }
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148
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149 void GEM_CheckMouseMode(_THIS)
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150 {
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151 /* If the mouse is hidden and input is grabbed, we use relative mode */
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152 if ( !(SDL_cursorstate & CURSOR_VISIBLE) &&
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153 (this->input_grab != SDL_GRAB_OFF) ) {
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154 GEM_mouse_relative = SDL_TRUE;
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155 } else {
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156 GEM_mouse_relative = SDL_FALSE;
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157 }
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158 }