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annotate src/video/ps2gs/SDL_gsmouse.c @ 3440:e9502d56ae94

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Added missing return values
author Sam Lantinga <slouken@libsdl.org>
date Tue, 17 Nov 2009 06:50:29 +0000
parents 99210400e8b9
children
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 <sys/ioctl.h>
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25
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26 #include "SDL_mouse.h"
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27 #include "../../events/SDL_events_c.h"
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28 #include "../SDL_cursor_c.h"
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29 #include "SDL_gsvideo.h"
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30 #include "SDL_gsmouse_c.h"
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32
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33 /* The implementation dependent data for the window manager cursor */
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34 struct WMcursor
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35 {
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36 int unused;
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37 };
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38
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39 /* There isn't any implementation dependent data */
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40 void
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41 GS_FreeWMCursor(_THIS, WMcursor * cursor)
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42 {
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43 return;
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44 }
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45
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46 /* There isn't any implementation dependent data */
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47 WMcursor *
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48 GS_CreateWMCursor(_THIS,
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49 Uint8 * data, Uint8 * mask, int w, int h, int hot_x,
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50 int hot_y)
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51 {
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52 return ((WMcursor *) 0x01);
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53 }
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54
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55 static void
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56 GS_MoveCursor(_THIS, SDL_Cursor * cursor, int x, int y)
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57 {
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58 SDL_Surface *screen;
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59 struct ps2_image image;
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60 SDL_Rect area;
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61 int mouse_y1, mouse_y2;
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62 void *saved_pixels;
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63 int screen_updated;
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64
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65 /* Lock so we don't interrupt an update with mouse motion */
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66 SDL_LockCursor();
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67
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68 /* Make sure any pending DMA has completed */
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69 if (dma_pending) {
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70 ioctl(console_fd, PS2IOC_SENDQCT, 1);
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71 dma_pending = 0;
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72 }
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73
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74 /* Remove the cursor image from the DMA area */
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75 screen = this->screen;
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76 saved_pixels = screen->pixels;
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77 screen->pixels = mapped_mem + screen->offset;
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78 screen_updated = 0;
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79 if (cursor_drawn) {
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80 SDL_EraseCursorNoLock(screen);
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81 cursor_drawn = 0;
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82 screen_updated = 1;
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83 }
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84
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85 /* Save the current mouse area */
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86 SDL_MouseRect(&area);
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87 mouse_y1 = area.y;
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88 mouse_y2 = area.y + area.h;
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89
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90 /* Only draw the new cursor if there was one passed in */
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91 if (cursor) {
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92 /* Set the new location */
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93 cursor->area.x = (x - cursor->hot_x);
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94 cursor->area.y = (y - cursor->hot_y);
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95
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96 /* Draw the cursor at the new location */
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97 if ((SDL_cursorstate & CURSOR_VISIBLE) && screen->pixels) {
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98 SDL_DrawCursorNoLock(screen);
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99 cursor_drawn = 1;
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100 screen_updated = 1;
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101 }
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102 }
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103 screen->pixels = saved_pixels;
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104
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105 /* Update the affected area of the screen */
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106 if (screen_updated) {
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107 SDL_MouseRect(&area);
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108 if (area.y < mouse_y1) {
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109 mouse_y1 = area.y;
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110 }
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111 if ((area.y + area.h) > mouse_y2) {
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112 mouse_y2 = area.y + area.h;
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113 }
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114 image = screen_image;
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115 image.y += screen->offset / screen->pitch + mouse_y1;
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116 image.h = mouse_y2 - mouse_y1;
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117 image.ptr = mapped_mem + (image.y - screen_image.y) * screen->pitch;
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118 ioctl(console_fd, PS2IOC_LOADIMAGE, &image);
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119
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120 /* Need to scale offscreen image to TV output */
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121 if (image.y > 0) {
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122 scaleimage_nonblock(console_fd, tex_tags_mem, scale_tags_mem);
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123 }
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124 }
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125
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126 /* We're finished */
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127 SDL_UnlockCursor();
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128 }
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129
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130 void
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131 GS_MoveWMCursor(_THIS, int x, int y)
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132 {
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133 GS_MoveCursor(this, SDL_cursor, x, y);
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134 }
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135
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136 int
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137 GS_ShowWMCursor(_THIS, WMcursor * wmcursor)
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138 {
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139 SDL_Cursor *cursor;
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140 int x, y;
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141
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142 /* Draw the cursor at the appropriate location */
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143 SDL_GetMouseState(&x, &y);
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144 if (wmcursor) {
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145 cursor = SDL_cursor;
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146 } else {
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147 cursor = NULL;
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148 }
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149 GS_MoveCursor(this, cursor, x, y);
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150 return (1);
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151 }
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152
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153 /* vi: set ts=4 sw=4 expandtab: */