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annotate src/video/gem/SDL_gemmouse.c @ 1338:604d73db6802

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Removed uses of stdlib.h and string.h
author Sam Lantinga <slouken@libsdl.org>
date Tue, 07 Feb 2006 09:29:18 +0000
parents 3692456e7b0f
children c71e05b4dc2e
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
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23 /*
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24 * GEM Mouse manager
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25 *
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26 * Patrice Mandin
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27 */
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28
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29 #include <gem.h>
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30
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31 #include "SDL_stdlib.h"
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32 #include "SDL_error.h"
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33 #include "SDL_mouse.h"
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34 #include "SDL_events_c.h"
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35 #include "SDL_cursor_c.h"
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36 #include "SDL_gemmouse_c.h"
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37
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38 /* Defines */
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39
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40 /*#define DEBUG_VIDEO_GEM 1*/
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41
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42 #define MAXCURWIDTH 16
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43 #define MAXCURHEIGHT 16
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44
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45 /* The implementation dependent data for the window manager cursor */
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46 struct WMcursor {
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47 MFORM *mform_p;
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48 };
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49
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50
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51 void GEM_FreeWMCursor(_THIS, WMcursor *cursor)
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52 {
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53 if (cursor == NULL)
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54 return;
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55
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56 graf_mouse(ARROW, NULL);
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57
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58 if (cursor->mform_p != NULL)
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59 SDL_free(cursor->mform_p);
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60
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61 SDL_free(cursor);
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62 }
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63
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64 WMcursor *GEM_CreateWMCursor(_THIS,
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65 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
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66 {
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67 WMcursor *cursor;
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68 MFORM *new_mform;
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69 int i;
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70
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71 /* Check the size */
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72 if ( (w > MAXCURWIDTH) || (h > MAXCURHEIGHT) ) {
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73 SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
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74 MAXCURWIDTH, MAXCURHEIGHT);
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75 return(NULL);
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76 }
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77
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78 /* Allocate the cursor memory */
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79 cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor));
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80 if ( cursor == NULL ) {
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81 SDL_OutOfMemory();
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82 return(NULL);
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83 }
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84
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85 /* Allocate mform */
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86 new_mform = (MFORM *)SDL_malloc(sizeof(MFORM));
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87 if (new_mform == NULL) {
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88 SDL_free(cursor);
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89 SDL_OutOfMemory();
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90 return(NULL);
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91 }
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92
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93 cursor->mform_p = new_mform;
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94
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95 new_mform->mf_xhot = hot_x;
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96 new_mform->mf_yhot = hot_y;
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97 new_mform->mf_nplanes = 1;
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98 new_mform->mf_fg = 0;
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99 new_mform->mf_bg = 1;
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100
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101 for (i=0;i<MAXCURHEIGHT;i++) {
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102 new_mform->mf_mask[i]=0;
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103 new_mform->mf_data[i]=0;
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104 }
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105
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106 if (w<=8) {
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107 for (i=0;i<h;i++) {
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108 new_mform->mf_mask[i]= mask[i]<<8;
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109 new_mform->mf_data[i]= data[i]<<8;
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110 }
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111 } else {
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112 for (i=0;i<h;i++) {
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113 new_mform->mf_mask[i]= mask[i<<1]<<8 | mask[(i<<1)+1];
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114 new_mform->mf_data[i]= data[i<<1]<<8 | data[(i<<1)+1];
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115 }
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116 }
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117
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118 #ifdef DEBUG_VIDEO_GEM
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119 for (i=0; i<h ;i++) {
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120 printf("sdl:video:gem: cursor, line %d = 0x%04x\n", i, new_mform->mf_mask[i]);
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121 }
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122
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123 printf("sdl:video:gem: CreateWMCursor(): done\n");
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124 #endif
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125
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126 return cursor;
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127 }
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128
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129 int GEM_ShowWMCursor(_THIS, WMcursor *cursor)
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130 {
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131 /*
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132 if (cursor == NULL) {
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133 graf_mouse(M_OFF, NULL);
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134 } else if (cursor->mform_p) {
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135 graf_mouse(USER_DEF, cursor->mform_p);
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136 }
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137 */
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138 #ifdef DEBUG_VIDEO_GEM
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139 printf("sdl:video:gem: ShowWMCursor(0x%08x)\n", (long) cursor);
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140 #endif
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141
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142 return 1;
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143 }
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144
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145 #if 0
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146 void GEM_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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147 {
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148 /* This seems to work only on AES 3.4 (Falcon) */
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149
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150 EVNTREC warpevent;
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151
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152 warpevent.ap_event = APPEVNT_MOUSE;
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153 warpevent.ap_value = (x << 16) | y;
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154
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155 appl_tplay(&warpevent, 1, 1000);
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156 }
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157 #endif
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158
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159 void GEM_CheckMouseMode(_THIS)
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160 {
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161 /* If the mouse is hidden and input is grabbed, we use relative mode */
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162 if ( (!(SDL_cursorstate & CURSOR_VISIBLE)) &&
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163 /*(this->input_grab != SDL_GRAB_OFF) && */ /* Damn GEM can not grab */
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164 (SDL_GetAppState() & SDL_APPACTIVE) ) {
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165 GEM_mouse_relative = SDL_TRUE;
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166 } else {
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167 GEM_mouse_relative = SDL_FALSE;
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168 }
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169 }