annotate src/video/uikit/SDL_uikitvideo.m @ 5256:1b0de3574c58

Fixed compile in Xcode
author Sam Lantinga <slouken@libsdl.org>
date Fri, 11 Feb 2011 10:18:34 -0800
parents fb424691cfc7
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
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23 #import <UIKit/UIKit.h>
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24
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25 #include "SDL_config.h"
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26
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27 #include "SDL_video.h"
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28 #include "SDL_mouse.h"
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29 #include "../SDL_sysvideo.h"
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30 #include "../SDL_pixels_c.h"
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31 #include "../../events/SDL_events_c.h"
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32
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33 #include "SDL_uikitvideo.h"
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34 #include "SDL_uikitevents.h"
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35 #include "SDL_uikitwindow.h"
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36 #include "SDL_uikitopengles.h"
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37
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38 #include "SDL_assert.h"
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39
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40 #define UIKITVID_DRIVER_NAME "uikit"
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41
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42 /* Initialization/Query functions */
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43 static int UIKit_VideoInit(_THIS);
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44 static void UIKit_GetDisplayModes(_THIS, SDL_VideoDisplay * sdl_display);
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45 static int UIKit_SetDisplayMode(_THIS, SDL_VideoDisplay * display,
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46 SDL_DisplayMode * mode);
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47 static void UIKit_VideoQuit(_THIS);
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48
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49 BOOL SDL_UIKit_supports_multiple_displays = NO;
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50
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51 /* DUMMY driver bootstrap functions */
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52
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53 static int
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54 UIKit_Available(void)
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55 {
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56 return (1);
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57 }
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58
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59 static void UIKit_DeleteDevice(SDL_VideoDevice * device)
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60 {
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61 SDL_free(device);
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62 }
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63
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64 static SDL_VideoDevice *
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65 UIKit_CreateDevice(int devindex)
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66 {
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67 SDL_VideoDevice *device;
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68
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69 /* Initialize all variables that we clean on shutdown */
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70 device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
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71 if (!device) {
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72 SDL_OutOfMemory();
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73 if (device) {
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74 SDL_free(device);
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75 }
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76 return (0);
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77 }
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78
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79 /* Set the function pointers */
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80 device->VideoInit = UIKit_VideoInit;
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81 device->VideoQuit = UIKit_VideoQuit;
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82 device->GetDisplayModes = UIKit_GetDisplayModes;
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83 device->SetDisplayMode = UIKit_SetDisplayMode;
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84 device->PumpEvents = UIKit_PumpEvents;
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85 device->CreateWindow = UIKit_CreateWindow;
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86 device->DestroyWindow = UIKit_DestroyWindow;
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87 device->GetWindowWMInfo = UIKit_GetWindowWMInfo;
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88
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89
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90 /* OpenGL (ES) functions */
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91 device->GL_MakeCurrent = UIKit_GL_MakeCurrent;
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92 device->GL_SwapWindow = UIKit_GL_SwapWindow;
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93 device->GL_CreateContext = UIKit_GL_CreateContext;
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94 device->GL_DeleteContext = UIKit_GL_DeleteContext;
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95 device->GL_GetProcAddress = UIKit_GL_GetProcAddress;
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96 device->GL_LoadLibrary = UIKit_GL_LoadLibrary;
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97 device->free = UIKit_DeleteDevice;
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98
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99 device->gl_config.accelerated = 1;
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100
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101 return device;
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102 }
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103
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104 VideoBootStrap UIKIT_bootstrap = {
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105 UIKITVID_DRIVER_NAME, "SDL UIKit video driver",
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106 UIKit_Available, UIKit_CreateDevice
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107 };
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108
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109
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110 /*
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111 !!! FIXME:
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112
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113 The main screen should list a AxB mode for portrait orientation, and then
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114 also list BxA for landscape mode. When setting a given resolution, we should
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115 rotate the view's transform appropriately (extra credit if you check the
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116 accelerometer and rotate the display so it's never upside down).
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117
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118 http://iphonedevelopment.blogspot.com/2008/10/starting-in-landscape-mode-without.html
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119
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120 */
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121
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122 static void
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123 UIKit_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
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124 {
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125 UIScreen *uiscreen = (UIScreen *) display->driverdata;
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126 SDL_DisplayMode mode;
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127 SDL_zero(mode);
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128
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129 // availableModes showed up in 3.2 (the iPad and later). We should only
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130 // land here for at least that version of the OS.
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131 if (!SDL_UIKit_supports_multiple_displays) {
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132 const CGRect rect = [uiscreen bounds];
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133 mode.format = SDL_PIXELFORMAT_ABGR8888;
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134 mode.w = (int) rect.size.width;
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135 mode.h = (int) rect.size.height;
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136 mode.refresh_rate = 0;
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137 mode.driverdata = NULL;
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138 SDL_AddDisplayMode(display, &mode);
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139 return;
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140 }
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141
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142 const NSArray *modes = [uiscreen availableModes];
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143 const NSUInteger mode_count = [modes count];
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144 NSUInteger i;
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145 for (i = 0; i < mode_count; i++) {
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146 UIScreenMode *uimode = (UIScreenMode *) [modes objectAtIndex:i];
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147 const CGSize size = [uimode size];
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148 mode.format = SDL_PIXELFORMAT_ABGR8888;
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149 mode.w = (int) size.width;
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150 mode.h = (int) size.height;
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151 mode.refresh_rate = 0;
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152 mode.driverdata = uimode;
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153 [uimode retain];
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154 SDL_AddDisplayMode(display, &mode);
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155 }
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156 }
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157
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158
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159 static void
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160 UIKit_AddDisplay(UIScreen *uiscreen, int w, int h)
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161 {
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162 SDL_VideoDisplay display;
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163 SDL_DisplayMode mode;
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164 SDL_zero(mode);
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165 mode.format = SDL_PIXELFORMAT_ABGR8888;
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166 mode.w = w;
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167 mode.h = h;
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168 mode.refresh_rate = 0;
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169
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170 SDL_zero(display);
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171 display.desktop_mode = mode;
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172 display.current_mode = mode;
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173
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174 [uiscreen retain];
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175 display.driverdata = uiscreen;
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176 SDL_AddVideoDisplay(&display);
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177 }
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178
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179
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180 int
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181 UIKit_VideoInit(_THIS)
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182 {
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183 _this->gl_config.driver_loaded = 1;
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184
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185 NSString *reqSysVer = @"3.2";
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186 NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
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187 if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending)
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188 SDL_UIKit_supports_multiple_displays = YES;
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189
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190 // If this is iPhoneOS < 3.2, all devices are one screen, 320x480 pixels.
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191 // The iPad added both a larger main screen and the ability to use
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192 // external displays.
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193 if (!SDL_UIKit_supports_multiple_displays) {
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194 // Just give 'em the whole main screen.
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195 UIScreen *uiscreen = [UIScreen mainScreen];
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196 const CGRect rect = [uiscreen bounds];
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197 UIKit_AddDisplay(uiscreen, (int)rect.size.width, (int)rect.size.height);
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198 } else {
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199 const NSArray *screens = [UIScreen screens];
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200 const NSUInteger screen_count = [screens count];
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201 NSUInteger i;
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202 for (i = 0; i < screen_count; i++) {
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203 // the main screen is the first element in the array.
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204 UIScreen *uiscreen = (UIScreen *) [screens objectAtIndex:i];
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205 const CGSize size = [[uiscreen currentMode] size];
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206 UIKit_AddDisplay(uiscreen, (int) size.width, (int) size.height);
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207 }
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208 }
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209
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210 /* We're done! */
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211 return 0;
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212 }
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213
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214 static int
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215 UIKit_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
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216 {
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217 UIScreen *uiscreen = (UIScreen *) display->driverdata;
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218 if (!SDL_UIKit_supports_multiple_displays) {
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219 // Not on at least iPhoneOS 3.2 (versions prior to iPad).
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220 SDL_assert(mode->driverdata == NULL);
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221 } else {
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222 UIScreenMode *uimode = (UIScreenMode *) mode->driverdata;
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223 [uiscreen setCurrentMode:uimode];
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224 }
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225
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226 return 0;
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227 }
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228
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229 void
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230 UIKit_VideoQuit(_THIS)
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231 {
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232 // Release Objective-C objects, so higher level doesn't free() them.
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233 int i, j;
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234 for (i = 0; i < _this->num_displays; i++) {
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235 SDL_VideoDisplay *display = &_this->displays[i];
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236 UIScreen *uiscreen = (UIScreen *) display->driverdata;
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237 [uiscreen release];
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238 display->driverdata = NULL;
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239 for (j = 0; j < display->num_display_modes; j++) {
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240 SDL_DisplayMode *mode = &display->display_modes[j];
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241 UIScreenMode *uimode = (UIScreenMode *) mode->driverdata;
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242 if (uimode) {
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243 [uimode release];
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244 mode->driverdata = NULL;
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245 }
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246 }
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247 }
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248 }
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249
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250 /* vi: set ts=4 sw=4 expandtab: */