Mercurial > sdl-ios-xcode

annotate src/video/bwindow/SDL_sysmouse.cc @ 5157:fb424691cfc7

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Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
author Sam Lantinga <slouken@libsdl.org>
date Wed, 02 Feb 2011 14:34:54 -0800
parents 99210400e8b9
children b530ef003506
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 #include <AppKit.h>
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25 #include <GameKit.h>
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26
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27 #include "SDL_BWin.h"
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28
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29 extern "C"
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30 {
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31
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32 #include "SDL_sysmouse_c.h"
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33
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34 /* Convert bits to padded bytes */
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35 #define PADDED_BITS(bits) ((bits+7)/8)
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36
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37 /* The implementation dependent data for the window manager cursor */
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38 struct WMcursor
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39 {
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40 char *bits;
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41 };
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42
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43 /* Can this be done in the BeOS? */
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44 WMcursor *BE_CreateWMCursor(_THIS,
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45 Uint8 * data, Uint8 * mask, int w, int h,
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46 int hot_x, int hot_y)
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47 {
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48 WMcursor *cursor;
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49 int allowed_x;
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50 int allowed_y;
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51 int run, pad, i;
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52 char *cptr;
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53
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54 allowed_x = 16; /* BeOS limitation */
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55 allowed_y = 16; /* BeOS limitation */
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56 if ((w > allowed_x) || (h > allowed_y))
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57 {
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58 SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
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59 allowed_x, allowed_y);
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60 return (NULL);
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61 }
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62
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63 /* Allocate the cursor */
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64 cursor = (WMcursor *) SDL_malloc(sizeof(WMcursor));
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65 if (cursor == NULL) {
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66 SDL_OutOfMemory();
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67 return (NULL);
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68 }
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69 cursor->bits =
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70 (char *) SDL_malloc(4 + 2 * ((allowed_x / 8) * allowed_y));
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71 if (cursor->bits == NULL) {
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72 SDL_free(cursor);
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73 SDL_OutOfMemory();
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74 return (NULL);
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75 }
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76 cursor->bits[0] = allowed_y; /* Size of the cursor */
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77 cursor->bits[1] = 1; /* Bit depth of cursor */
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78 cursor->bits[2] = hot_y;
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79 cursor->bits[3] = hot_x;
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80 cptr = &cursor->bits[4];
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81
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82 /* Pad out to the normal cursor size */
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83 run = PADDED_BITS(w);
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84 pad = PADDED_BITS(allowed_x) - run;
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85 for (i = 0; i < h; ++i) {
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86 SDL_memcpy(cptr, data, run);
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87 SDL_memset(cptr + run, 0, pad);
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88 data += run;
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89 cptr += (run + pad);
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90 }
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91 for (; i < allowed_y; ++i) {
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92 SDL_memset(cptr, 0, run + pad);
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93 cptr += (run + pad);
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94 }
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95 for (i = 0; i < h; ++i) {
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96 /* FIXME: The mask should be OR'd with the data to turn
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97 inverted color pixels black, since inverted color pixels
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98 aren't supported under BeOS.
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99 */
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100 SDL_memcpy(cptr, mask, run);
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101 SDL_memset(cptr + run, 0, pad);
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102 mask += run;
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103 cptr += (run + pad);
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104 }
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105 for (; i < allowed_y; ++i) {
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106 SDL_memset(cptr, 0, run + pad);
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107 cptr += (run + pad);
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108 }
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109 return (cursor);
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110 }
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111
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112 int BE_ShowWMCursor(_THIS, WMcursor * cursor)
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113 {
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114 if (be_app->Lock()) {
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115 if (cursor == NULL) {
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116 if (SDL_BlankCursor != NULL) {
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117 be_app->SetCursor(SDL_BlankCursor->bits);
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118 }
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119 } else {
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120 be_app->SetCursor(cursor->bits);
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121 }
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122 be_app->Unlock();
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123 }
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124 return (1);
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125 }
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126
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127 void BE_FreeWMCursor(_THIS, WMcursor * cursor)
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128 {
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129 SDL_free(cursor->bits);
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130 SDL_free(cursor);
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131 }
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133 /* Implementation by Christian Bauer <cbauer@student.physik.uni-mainz.de> */
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134 void BE_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
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135 {
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136 BPoint pt(x, y);
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137 SDL_Win->Lock();
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138 SDL_Win->ConvertToScreen(&pt);
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139 SDL_Win->Unlock();
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140 set_mouse_position((int32) pt.x, (int32) pt.y);
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141 }
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142
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143 }; /* Extern C */
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144
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145 /* vi: set ts=4 sw=4 expandtab: */