Mercurial > sdl-ios-xcode

annotate src/video/gem/SDL_gemmouse.c @ 2108:a930c8e4d8b0

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Allow creation of window bigger than visible size
author Patrice Mandin <patmandin@gmail.com>
date Sun, 27 May 2007 08:54:38 +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: */