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annotate src/video/uikit/SDL_uikitview.m @ 2927:2133d2d300fd

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SetDrawColor() and SetDrawBlendMode() are optional
author Sam Lantinga <slouken@libsdl.org>
date Tue, 30 Dec 2008 07:14:11 +0000
parents 99210400e8b9
children b93965a16fe0
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 "SDL_uikitview.h"
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24
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25 #if SDL_IPHONE_KEYBOARD
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26 #import "SDL_keyboard_c.h"
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27 #import "keyinfotable.h"
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28 #import "SDL_uikitappdelegate.h"
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29 #import "SDL_uikitwindow.h"
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30 #endif
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31
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32 @implementation SDL_uikitview
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33
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34 - (void)dealloc {
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35 #if SDL_IPHONE_KEYBOARD
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36 SDL_DelKeyboard(0);
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37 [textField release];
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38 #endif
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39 [super dealloc];
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40 }
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41
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42 - (id)initWithFrame:(CGRect)frame {
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43
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44 self = [super initWithFrame: frame];
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45
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46 #if SDL_IPHONE_KEYBOARD
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47 [self initializeKeyboard];
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48 #endif
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49
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50 int i;
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51 for (i=0; i<MAX_SIMULTANEOUS_TOUCHES; i++) {
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52 mice[i].driverdata = NULL;
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53 SDL_AddMouse(&mice[i], i, "Mouse", 0, 0, 1);
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54 }
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55 self.multipleTouchEnabled = YES;
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56
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57 return self;
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58
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59 }
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60
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61 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
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62
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63 NSEnumerator *enumerator = [touches objectEnumerator];
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64 UITouch *touch =(UITouch*)[enumerator nextObject];
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65
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66 /* associate touches with mice, so long as we have slots */
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67 int i;
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68 int found = 0;
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69 for(i=0; touch && i < MAX_SIMULTANEOUS_TOUCHES; i++) {
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70
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71 /* check if this mouse is already tracking a touch */
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72 if (mice[i].driverdata != NULL) {
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73 continue;
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74 }
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75 /*
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76 mouse not associated with anything right now,
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77 associate the touch with this mouse
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78 */
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79 found = 1;
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80
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81 /* save old mouse so we can switch back */
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82 int oldMouse = SDL_SelectMouse(-1);
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83
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84 /* select this slot's mouse */
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85 SDL_SelectMouse(i);
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86 CGPoint locationInView = [touch locationInView: self];
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87
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88 /* set driver data to touch object, we'll use touch object later */
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89 mice[i].driverdata = [touch retain];
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90
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91 /* send moved event */
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92 SDL_SendMouseMotion(i, 0, locationInView.x, locationInView.y, 0);
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93
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94 /* send mouse down event */
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95 SDL_SendMouseButton(i, SDL_PRESSED, SDL_BUTTON_LEFT);
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96
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97 /* re-calibrate relative mouse motion */
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98 SDL_GetRelativeMouseState(i, NULL, NULL);
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99
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100 /* grab next touch */
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101 touch = (UITouch*)[enumerator nextObject];
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102
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103 /* switch back to our old mouse */
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104 SDL_SelectMouse(oldMouse);
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105
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106 }
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107 }
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108
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109 - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
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110
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111 NSEnumerator *enumerator = [touches objectEnumerator];
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112 UITouch *touch=nil;
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113
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114 while(touch = (UITouch *)[enumerator nextObject]) {
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115 /* search for the mouse slot associated with this touch */
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116 int i, found = NO;
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117 for (i=0; i<MAX_SIMULTANEOUS_TOUCHES && !found; i++) {
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118 if (mice[i].driverdata == touch) {
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119 /* found the mouse associate with the touch */
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120 [(UITouch*)(mice[i].driverdata) release];
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121 mice[i].driverdata = NULL;
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122 /* send mouse up */
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123 SDL_SendMouseButton(i, SDL_RELEASED, SDL_BUTTON_LEFT);
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124 /* discontinue search for this touch */
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125 found = YES;
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126 }
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127 }
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128 }
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129 }
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130
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131 - (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
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132 /*
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133 this can happen if the user puts more than 5 touches on the screen
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134 at once, or perhaps in other circumstances. Usually (it seems)
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135 all active touches are canceled.
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136 */
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137 [self touchesEnded: touches withEvent: event];
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138 }
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139
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140 - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
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141
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142 NSEnumerator *enumerator = [touches objectEnumerator];
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143 UITouch *touch=nil;
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144
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145 while(touch = (UITouch *)[enumerator nextObject]) {
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146 /* try to find the mouse associated with this touch */
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147 int i, found = NO;
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148 for (i=0; i<MAX_SIMULTANEOUS_TOUCHES && !found; i++) {
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149 if (mice[i].driverdata == touch) {
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150 /* found proper mouse */
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151 CGPoint locationInView = [touch locationInView: self];
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152 /* send moved event */
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153 SDL_SendMouseMotion(i, 0, locationInView.x, locationInView.y, 0);
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154 /* discontinue search */
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155 found = YES;
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156 }
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157 }
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158 }
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159 }
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160
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161 /*
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162 ---- Keyboard related functionality below this line ----
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163 */
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164 #if SDL_IPHONE_KEYBOARD
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165
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166 /* Is the iPhone virtual keyboard visible onscreen? */
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167 - (BOOL)keyboardVisible {
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168 return keyboardVisible;
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169 }
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170
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171 /* Set ourselves up as a UITextFieldDelegate */
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172 - (void)initializeKeyboard {
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173
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174 textField = [[[UITextField alloc] initWithFrame: CGRectZero] autorelease];
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175 textField.delegate = self;
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176 /* placeholder so there is something to delete! */
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177 textField.text = @" ";
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178
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179 /* set UITextInputTrait properties, mostly to defaults */
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180 textField.autocapitalizationType = UITextAutocapitalizationTypeNone;
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181 textField.autocorrectionType = UITextAutocorrectionTypeNo;
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182 textField.enablesReturnKeyAutomatically = NO;
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183 textField.keyboardAppearance = UIKeyboardAppearanceDefault;
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184 textField.keyboardType = UIKeyboardTypeDefault;
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185 textField.returnKeyType = UIReturnKeyDefault;
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186 textField.secureTextEntry = NO;
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187
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188 textField.hidden = YES;
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189 keyboardVisible = NO;
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190 /* add the UITextField (hidden) to our view */
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191 [self addSubview: textField];
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192
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193 /* create our SDL_Keyboard */
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194 SDL_Keyboard keyboard;
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195 SDL_zero(keyboard);
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196 SDL_AddKeyboard(&keyboard, 0);
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197 SDLKey keymap[SDL_NUM_SCANCODES];
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198 SDL_GetDefaultKeymap(keymap);
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199 SDL_SetKeymap(0, 0, keymap, SDL_NUM_SCANCODES);
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200
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201 }
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202
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203 /* reveal onscreen virtual keyboard */
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204 - (void)showKeyboard {
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205 keyboardVisible = YES;
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206 [textField becomeFirstResponder];
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207 }
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208
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209 /* hide onscreen virtual keyboard */
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210 - (void)hideKeyboard {
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211 keyboardVisible = NO;
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212 [textField resignFirstResponder];
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213 }
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214
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215 /* UITextFieldDelegate method. Invoked when user types something. */
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216 - (BOOL)textField:(UITextField *)_textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
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217
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218 if ([string length] == 0) {
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219 /* it wants to replace text with nothing, ie a delete */
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220 SDL_SendKeyboardKey( 0, SDL_PRESSED, SDL_SCANCODE_DELETE);
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221 SDL_SendKeyboardKey( 0, SDL_RELEASED, SDL_SCANCODE_DELETE);
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222 }
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223 else {
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224 /* go through all the characters in the string we've been sent
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225 and convert them to key presses */
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226 int i;
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227 for (i=0; i<[string length]; i++) {
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228
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229 unichar c = [string characterAtIndex: i];
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230
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231 Uint16 mod = 0;
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232 SDL_scancode code;
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233
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234 if (c < 127) {
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235 /* figure out the SDL_scancode and SDL_keymod for this unichar */
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236 code = unicharToUIKeyInfoTable[c].code;
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237 mod = unicharToUIKeyInfoTable[c].mod;
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238 }
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239 else {
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240 /* we only deal with ASCII right now */
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241 code = SDL_SCANCODE_UNKNOWN;
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242 mod = 0;
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243 }
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244
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245 if (mod & KMOD_SHIFT) {
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246 /* If character uses shift, press shift down */
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247 SDL_SendKeyboardKey( 0, SDL_PRESSED, SDL_SCANCODE_LSHIFT);
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248 }
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249 /* send a keydown and keyup even for the character */
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250 SDL_SendKeyboardKey( 0, SDL_PRESSED, code);
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251 SDL_SendKeyboardKey( 0, SDL_RELEASED, code);
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252 if (mod & KMOD_SHIFT) {
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253 /* If character uses shift, press shift back up */
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254 SDL_SendKeyboardKey( 0, SDL_RELEASED, SDL_SCANCODE_LSHIFT);
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255 }
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256 }
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257 }
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258 return NO; /* don't allow the edit! (keep placeholder text there) */
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259 }
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260
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261 /* Terminates the editing session */
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262 - (BOOL)textFieldShouldReturn:(UITextField*)_textField {
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263 [self hideKeyboard];
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264 return YES;
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265 }
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266
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267 #endif
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268
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269 @end
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270
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271 /* iPhone keyboard addition functions */
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diff changeset
272 #if SDL_IPHONE_KEYBOARD
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273
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274 int SDL_iPhoneKeyboardShow(SDL_WindowID windowID) {
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275
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276 SDL_Window *window = SDL_GetWindowFromID(windowID);
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277 SDL_WindowData *data;
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278 SDL_uikitview *view;
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279
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280 if (NULL == window) {
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281 SDL_SetError("Window does not exist");
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282 return -1;
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283 }
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284
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285 data = (SDL_WindowData *)window->driverdata;
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diff changeset
286 view = data->view;
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diff changeset
287
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diff changeset
288 if (nil == view) {
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289 SDL_SetError("Window has no view");
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290 return -1;
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diff changeset
291 }
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292 else {
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293 [view showKeyboard];
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294 return 0;
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diff changeset
295 }
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296 }
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297
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298 int SDL_iPhoneKeyboardHide(SDL_WindowID windowID) {
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299
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300 SDL_Window *window = SDL_GetWindowFromID(windowID);
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301 SDL_WindowData *data;
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302 SDL_uikitview *view;
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303
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304 if (NULL == window) {
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305 SDL_SetError("Window does not exist");
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306 return -1;
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307 }
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308
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309 data = (SDL_WindowData *)window->driverdata;
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310 view = data->view;
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311
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312 if (NULL == view) {
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313 SDL_SetError("Window has no view");
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314 return -1;
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315 }
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316 else {
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317 [view hideKeyboard];
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318 return 0;
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319 }
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320 }
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321
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322 SDL_bool SDL_iPhoneKeyboardIsShown(SDL_WindowID windowID) {
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323
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324 SDL_Window *window = SDL_GetWindowFromID(windowID);
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325 SDL_WindowData *data;
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326 SDL_uikitview *view;
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327
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328 if (NULL == window) {
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329 SDL_SetError("Window does not exist");
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330 return -1;
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331 }
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332
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333 data = (SDL_WindowData *)window->driverdata;
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334 view = data->view;
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335
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336 if (NULL == view) {
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337 SDL_SetError("Window has no view");
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338 return 0;
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339 }
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340 else {
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341 return view.keyboardVisible;
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342 }
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343 }
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344
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345 int SDL_iPhoneKeyboardToggle(SDL_WindowID windowID) {
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346
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347 SDL_Window *window = SDL_GetWindowFromID(windowID);
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348 SDL_WindowData *data;
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349 SDL_uikitview *view;
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350
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351 if (NULL == window) {
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352 SDL_SetError("Window does not exist");
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353 return -1;
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354 }
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355
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356 data = (SDL_WindowData *)window->driverdata;
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357 view = data->view;
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358
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359 if (NULL == view) {
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360 SDL_SetError("Window has no view");
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361 return -1;
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362 }
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363 else {
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364 if (SDL_iPhoneKeyboardIsShown(windowID)) {
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365 SDL_iPhoneKeyboardHide(windowID);
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366 }
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367 else {
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368 SDL_iPhoneKeyboardShow(windowID);
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369 }
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370 return 0;
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371 }
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372 }
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373
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374 #else
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375
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376 /* stubs, used if compiled without keyboard support */
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377
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378 int SDL_iPhoneKeyboardShow(SDL_WindowID windowID) {
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379 SDL_SetError("Not compiled with keyboard support");
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380 return -1;
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381 }
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382
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383 int SDL_iPhoneKeyboardHide(SDL_WindowID windowID) {
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384 SDL_SetError("Not compiled with keyboard support");
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385 return -1;
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386 }
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387
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388 SDL_bool SDL_iPhoneKeyboardIsShown(SDL_WindowID windowID) {
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389 return 0;
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390 }
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391
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392 int SDL_iPhoneKeyboardToggle(SDL_WindowID windowID) {
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393 SDL_SetError("Not compiled with keyboard support");
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394 return -1;
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395 }
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396
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397
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398 #endif /* SDL_IPHONE_KEYBOARD */