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annotate src/video/directfb/SDL_DirectFB_mouse.c @ 2378:d76ecec0c3f7 gsoc2008_iphone

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iPhone SDL 1.3 demos go here. All these demos are written using pure SDL 1.3 code. No compatibility calls! Perhaps if they are any good they could be use as tests for the SDL 1.3 release.
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Fri, 18 Jul 2008 20:46:02 +0000
parents 1e690901ecd7
children e1da92da346c e82a0e3e9b0e
rev   line source
2226
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Sam Lantinga <slouken@libsdl.org>
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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 #include "SDL_DirectFB_video.h"
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25 #include "SDL_DirectFB_mouse.h"
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26
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27 #include "../SDL_sysvideo.h"
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28 #include "../../events/SDL_mouse_c.h"
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29
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30 static SDL_Cursor *DirectFB_CreateCursor(SDL_Surface * surface, int hot_x,
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31 int hot_y);
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32 static int DirectFB_ShowCursor(SDL_Cursor * cursor);
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33 static void DirectFB_MoveCursor(SDL_Cursor * cursor);
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34 static void DirectFB_FreeCursor(SDL_Cursor * cursor);
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35 static void DirectFB_WarpMouse(SDL_Mouse * mouse, SDL_WindowID windowID,
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36 int x, int y);
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37 static void DirectFB_FreeMouse(SDL_Mouse * mouse);
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38
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39 void
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40 DirectFB_InitMouse(_THIS)
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41 {
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42 SDL_DFB_DEVICEDATA(_this);
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43 SDL_Mouse mouse;
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44
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45 SDL_zero(mouse);
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46 mouse.CreateCursor = DirectFB_CreateCursor;
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47 mouse.ShowCursor = DirectFB_ShowCursor;
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48 mouse.MoveCursor = DirectFB_MoveCursor;
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49 mouse.FreeCursor = DirectFB_FreeCursor;
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50 mouse.WarpMouse = DirectFB_WarpMouse;
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51 mouse.FreeMouse = DirectFB_FreeMouse;
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52 devdata->mouse = SDL_AddMouse(&mouse, -1);
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53 }
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54
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55 void
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56 DirectFB_QuitMouse(_THIS)
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57 {
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58 SDL_DFB_DEVICEDATA(_this);
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59
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60 SDL_DelMouse(devdata->mouse);
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61 }
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62
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63 /* Create a cursor from a surface */
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64 static SDL_Cursor *
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65 DirectFB_CreateCursor(SDL_Surface * surface, int hot_x, int hot_y)
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66 {
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67 SDL_VideoDevice *dev = SDL_GetVideoDevice();
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68
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69 SDL_DFB_DEVICEDATA(dev);
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70 DFB_CursorData *curdata;
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71 DFBResult ret;
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72 DFBSurfaceDescription dsc;
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73 SDL_Cursor *cursor;
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74 Uint32 *dest;
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75 Uint32 *p;
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76 int pitch, i;
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77
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78 SDL_DFB_CALLOC(cursor, 1, sizeof(*cursor));
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79 SDL_DFB_CALLOC(curdata, 1, sizeof(*curdata));
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80
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81 dsc.flags =
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82 DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS;
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83 dsc.caps = DSCAPS_NONE; //DSCAPS_SYSTEMONLY;
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84 dsc.width = surface->w;
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85 dsc.height = surface->h;
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86 dsc.pixelformat = DSPF_ARGB;
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87
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88 SDL_DFB_CHECKERR(devdata->dfb->
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89 CreateSurface(devdata->dfb, &dsc, &curdata->surf));
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90 curdata->hotx = hot_x;
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91 curdata->hoty = hot_y;
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92 cursor->driverdata = curdata;
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93
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94 SDL_DFB_CHECKERR(curdata->surf->
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95 Lock(curdata->surf, DSLF_WRITE, (void *) &dest, &pitch));
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96
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97 //FIXME: Implies a lot of things, e.g. rgba format for SDL_SURFACE ....
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98 p = surface->pixels;
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99 for (i = 0; i < surface->w * surface->h; i++)
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100 if (p[i] == 0x00000000)
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101 dest[i] = 0x00000000;
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102 else
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103 dest[i] = p[i];
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104 //memcpy(dest, surface->pixels, surface->w * surface->h * 4);
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105 curdata->surf->Unlock(curdata->surf);
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106 return cursor;
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107 error:
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108 return NULL;
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109 }
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110
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111 /* Show the specified cursor, or hide if cursor is NULL */
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112 static int
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113 DirectFB_ShowCursor(SDL_Cursor * cursor)
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114 {
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115 //FIXME check for null cursor here
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116 SDL_DFB_CURSORDATA(cursor);
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117 SDL_VideoDevice *dev = SDL_GetVideoDevice();
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118 SDL_DFB_DEVICEDATA(dev);
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119 #if 0
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120 DFB_DisplayData *dispdata =
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121 (DFB_DisplayData *) dev->displays[dev->current_display].driverdata;
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122 #endif
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123 DFBResult ret;
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124 SDL_WindowID wid;
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125
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126 wid = SDL_GetFocusWindow();
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127 if (!wid)
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128 return -1;
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129 else {
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130 SDL_Window *window = SDL_GetWindowFromID(wid);
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131 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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132 DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
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133 DFB_WindowData *windata = (DFB_WindowData *) window->driverdata;
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134
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135 if (cursor)
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136 SDL_DFB_CHECKERR(windata->window->
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137 SetCursorShape(windata->window, curdata->surf,
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138 curdata->hotx, curdata->hoty));
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139 //FIXME: This is somehow a directfb issue
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140 //TODO: Check administrative
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141 SDL_DFB_CHECKERR(dispdata->layer->
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142 SetCooperativeLevel(dispdata->layer,
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143 DLSCL_ADMINISTRATIVE));
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144 SDL_DFB_CHECKERR(dispdata->layer->
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145 SetCursorOpacity(dispdata->layer,
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146 cursor ? 0xC0 : 0x00));
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147 SDL_DFB_CHECKERR(dispdata->layer->
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148 SetCooperativeLevel(dispdata->layer, DLSCL_SHARED));
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149 }
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150
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151 return 0;
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152 error:
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153 return -1;
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154 }
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155
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156 /* This is called when a mouse motion event occurs */
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157 static void
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158 DirectFB_MoveCursor(SDL_Cursor * cursor)
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159 {
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160 SDL_DFB_CURSORDATA(cursor);
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161 /* Do we need to do something here ? */
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162 }
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163
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164 /* Free a window manager cursor */
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165 static void
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166 DirectFB_FreeCursor(SDL_Cursor * cursor)
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167 {
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168 SDL_DFB_CURSORDATA(cursor);
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169
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170 SDL_DFB_RELEASE(curdata->surf);
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171 SDL_DFB_FREE(cursor->driverdata);
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172 SDL_DFB_FREE(cursor);
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173 }
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174
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175 /* Warp the mouse to (x,y) */
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176 static void
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177 DirectFB_WarpMouse(SDL_Mouse * mouse, SDL_WindowID windowID, int x, int y)
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178 {
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179 // SDL_DFB_CURSORDATA(cursor);
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180 SDL_Window *window = SDL_GetWindowFromID(windowID);
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181 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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182 DFB_DisplayData *dispdata = (DFB_DisplayData *) display->driverdata;
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183 DFB_WindowData *windata = (DFB_WindowData *) window->driverdata;
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184 DFBResult ret;
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185 int cx, cy;
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186
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187 SDL_DFB_CHECKERR(windata->window->GetPosition(windata->window, &cx, &cy));
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188 SDL_DFB_CHECKERR(dispdata->layer->
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189 WarpCursor(dispdata->layer, cx + x, cy + y));
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190
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191 error:
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192 return;
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193 }
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194
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195 /* Free the mouse when it's time */
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196 static void
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197 DirectFB_FreeMouse(SDL_Mouse * mouse)
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198 {
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199 // nothing yet
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200
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201 }
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202
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203 /* vi: set ts=4 sw=4 expandtab: */