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annotate src/video/gem/SDL_gemmouse.c @ 1743:70a4d819e95e

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Future proof C++ code
author Sam Lantinga <slouken@libsdl.org>
date Fri, 28 Apr 2006 05:43:58 +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 }