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annotate src/video/gem/SDL_gemmouse.c @ 1361:19418e4422cb

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New configure-based build system. Still work in progress, but much improved
author Sam Lantinga <slouken@libsdl.org>
date Thu, 16 Feb 2006 10:11:48 +0000
parents c71e05b4dc2e
children d910939febfa
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_mouse.h"
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32 #include "../../events/SDL_events_c.h"
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33 #include "../SDL_cursor_c.h"
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34 #include "SDL_gemmouse_c.h"
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35
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36 /* Defines */
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37
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38 /*#define DEBUG_VIDEO_GEM 1*/
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39
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40 #define MAXCURWIDTH 16
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41 #define MAXCURHEIGHT 16
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42
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43 /* The implementation dependent data for the window manager cursor */
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44 struct WMcursor {
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45 MFORM *mform_p;
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46 };
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47
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48
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49 void GEM_FreeWMCursor(_THIS, WMcursor *cursor)
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50 {
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51 if (cursor == NULL)
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52 return;
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53
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54 graf_mouse(ARROW, NULL);
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55
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56 if (cursor->mform_p != NULL)
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57 SDL_free(cursor->mform_p);
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58
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59 SDL_free(cursor);
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60 }
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61
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62 WMcursor *GEM_CreateWMCursor(_THIS,
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63 Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
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64 {
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65 WMcursor *cursor;
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66 MFORM *new_mform;
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67 int i;
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68
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69 /* Check the size */
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70 if ( (w > MAXCURWIDTH) || (h > MAXCURHEIGHT) ) {
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71 SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
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72 MAXCURWIDTH, MAXCURHEIGHT);
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73 return(NULL);
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74 }
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75
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76 /* Allocate the cursor memory */
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77 cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor));
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78 if ( cursor == NULL ) {
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79 SDL_OutOfMemory();
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80 return(NULL);
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81 }
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82
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83 /* Allocate mform */
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84 new_mform = (MFORM *)SDL_malloc(sizeof(MFORM));
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85 if (new_mform == NULL) {
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86 SDL_free(cursor);
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87 SDL_OutOfMemory();
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88 return(NULL);
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89 }
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90
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91 cursor->mform_p = new_mform;
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92
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93 new_mform->mf_xhot = hot_x;
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94 new_mform->mf_yhot = hot_y;
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95 new_mform->mf_nplanes = 1;
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96 new_mform->mf_fg = 0;
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97 new_mform->mf_bg = 1;
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98
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99 for (i=0;i<MAXCURHEIGHT;i++) {
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100 new_mform->mf_mask[i]=0;
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101 new_mform->mf_data[i]=0;
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102 }
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103
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104 if (w<=8) {
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105 for (i=0;i<h;i++) {
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106 new_mform->mf_mask[i]= mask[i]<<8;
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107 new_mform->mf_data[i]= data[i]<<8;
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108 }
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109 } else {
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110 for (i=0;i<h;i++) {
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111 new_mform->mf_mask[i]= mask[i<<1]<<8 | mask[(i<<1)+1];
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112 new_mform->mf_data[i]= data[i<<1]<<8 | data[(i<<1)+1];
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113 }
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114 }
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115
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116 #ifdef DEBUG_VIDEO_GEM
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117 for (i=0; i<h ;i++) {
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118 printf("sdl:video:gem: cursor, line %d = 0x%04x\n", i, new_mform->mf_mask[i]);
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119 }
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120
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121 printf("sdl:video:gem: CreateWMCursor(): done\n");
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122 #endif
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123
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124 return cursor;
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125 }
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126
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127 int GEM_ShowWMCursor(_THIS, WMcursor *cursor)
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128 {
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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 #ifdef DEBUG_VIDEO_GEM
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137 printf("sdl:video:gem: ShowWMCursor(0x%08x)\n", (long) cursor);
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138 #endif
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139
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140 return 1;
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141 }
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142
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143 #if 0
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144 void GEM_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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145 {
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146 /* This seems to work only on AES 3.4 (Falcon) */
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147
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148 EVNTREC warpevent;
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149
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150 warpevent.ap_event = APPEVNT_MOUSE;
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151 warpevent.ap_value = (x << 16) | y;
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152
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153 appl_tplay(&warpevent, 1, 1000);
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154 }
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155 #endif
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156
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157 void GEM_CheckMouseMode(_THIS)
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158 {
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159 /* If the mouse is hidden and input is grabbed, we use relative mode */
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160 if ( (!(SDL_cursorstate & CURSOR_VISIBLE)) &&
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161 /*(this->input_grab != SDL_GRAB_OFF) && */ /* Damn GEM can not grab */
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162 (SDL_GetAppState() & SDL_APPACTIVE) ) {
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163 GEM_mouse_relative = SDL_TRUE;
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164 } else {
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165 GEM_mouse_relative = SDL_FALSE;
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166 }
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167 }