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annotate src/video/gem/SDL_gemmouse.c @ 2185:2032348afed1

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This code adds support for DirectColor visuals to SDL 1.3. The support uses part of the Xmu library. To ensure that the library is available and to keep people form having to install yet another library I have added the essential parts of Xmu in src/video/extensions/XmuStdCmap and an include file in src/video/extensions. The support makes use of standard X11 mechanisms to create color maps and make sure that an application uses the same color map for each window/visual combination. This should make it possible for gamma support to be implemented based on a single color map per application. Hurm... it looks like "make indent" modified a few extra files. Those are getting committed too.
author Bob Pendleton <bob@pendleton.com>
date Thu, 12 Jul 2007 20:00:50 +0000
parents 7312feb88dad
children f54670a477bb
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 {
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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
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52 GEM_FreeWMCursor(_THIS, WMcursor * cursor)
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53 {
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54 if (cursor == NULL)
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55 return;
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56
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57 graf_mouse(ARROW, NULL);
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58
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59 if (cursor->mform_p != NULL)
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60 SDL_free(cursor->mform_p);
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61
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62 SDL_free(cursor);
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63 }
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64
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65 WMcursor *
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66 GEM_CreateWMCursor(_THIS,
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67 Uint8 * data, Uint8 * mask, int w, int h, int hot_x,
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68 int hot_y)
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69 {
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70 WMcursor *cursor;
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71 MFORM *new_mform;
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72 int i;
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73
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74 /* Check the size */
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75 if ((w > MAXCURWIDTH) || (h > MAXCURHEIGHT)) {
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76 SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
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77 MAXCURWIDTH, MAXCURHEIGHT);
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78 return (NULL);
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79 }
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80
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81 /* Allocate the cursor memory */
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82 cursor = (WMcursor *) SDL_malloc(sizeof(WMcursor));
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83 if (cursor == NULL) {
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84 SDL_OutOfMemory();
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85 return (NULL);
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86 }
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87
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88 /* Allocate mform */
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89 new_mform = (MFORM *) SDL_malloc(sizeof(MFORM));
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90 if (new_mform == NULL) {
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91 SDL_free(cursor);
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92 SDL_OutOfMemory();
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93 return (NULL);
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94 }
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95
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96 cursor->mform_p = new_mform;
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97
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98 new_mform->mf_xhot = hot_x;
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99 new_mform->mf_yhot = hot_y;
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100 new_mform->mf_nplanes = 1;
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101 new_mform->mf_fg = 0;
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102 new_mform->mf_bg = 1;
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103
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104 for (i = 0; i < MAXCURHEIGHT; i++) {
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105 new_mform->mf_mask[i] = 0;
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106 new_mform->mf_data[i] = 0;
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107 }
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108
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109 if (w <= 8) {
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110 for (i = 0; i < h; i++) {
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111 new_mform->mf_mask[i] = mask[i] << 8;
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112 new_mform->mf_data[i] = data[i] << 8;
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113 }
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114 } else {
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115 for (i = 0; i < h; i++) {
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116 new_mform->mf_mask[i] = mask[i << 1] << 8 | mask[(i << 1) + 1];
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117 new_mform->mf_data[i] = data[i << 1] << 8 | data[(i << 1) + 1];
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118 }
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119 }
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120
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121 #ifdef DEBUG_VIDEO_GEM
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122 for (i = 0; i < h; i++) {
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123 printf("sdl:video:gem: cursor, line %d = 0x%04x\n", i,
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124 new_mform->mf_mask[i]);
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125 }
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126
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127 printf("sdl:video:gem: CreateWMCursor(): done\n");
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128 #endif
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129
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130 return cursor;
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131 }
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132
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133 int
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134 GEM_ShowWMCursor(_THIS, WMcursor * cursor)
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135 {
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136 /*
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137 if (cursor == NULL) {
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138 graf_mouse(M_OFF, NULL);
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139 } else if (cursor->mform_p) {
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140 graf_mouse(USER_DEF, cursor->mform_p);
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141 }
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142 */
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143 #ifdef DEBUG_VIDEO_GEM
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144 printf("sdl:video:gem: ShowWMCursor(0x%08x)\n", (long) cursor);
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145 #endif
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146
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147 return 1;
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148 }
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149
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150 #if 0
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151 void
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152 GEM_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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153 {
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154 /* This seems to work only on AES 3.4 (Falcon) */
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155
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156 EVNTREC warpevent;
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157
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158 warpevent.ap_event = APPEVNT_MOUSE;
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159 warpevent.ap_value = (x << 16) | y;
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160
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161 appl_tplay(&warpevent, 1, 1000);
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162 }
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163 #endif
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164
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165 void
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166 GEM_CheckMouseMode(_THIS)
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167 {
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168 /* If the mouse is hidden and input is grabbed, we use relative mode */
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169 if ((!(SDL_cursorstate & CURSOR_VISIBLE)) &&
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170 (this->input_grab != SDL_GRAB_OFF) &&
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171 (SDL_GetAppState() & SDL_APPACTIVE)) {
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172 SDL_AtariXbios_LockMousePosition(SDL_TRUE);
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173 GEM_mouse_relative = SDL_TRUE;
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174 } else {
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175 SDL_AtariXbios_LockMousePosition(SDL_FALSE);
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176 GEM_mouse_relative = SDL_FALSE;
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177 graf_mouse(M_ON, NULL);
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178 }
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179 }
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180
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181 /* vi: set ts=4 sw=4 expandtab: */