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annotate src/events/SDL_windowevents.c @ 5260:b0f5108fda60

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Cleaned up the file a bit for tutorial viewing
author Sam Lantinga <slouken@libsdl.org>
date Fri, 11 Feb 2011 13:06:35 -0800
parents 7a963be087ef
children 595814f561f7
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 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
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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16 License along with this library; if not, write to the Free Software
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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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 /* Window event handling code for SDL */
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25
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26 #include "SDL_events.h"
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27 #include "SDL_events_c.h"
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28 #include "SDL_mouse_c.h"
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29 #include "../video/SDL_sysvideo.h"
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30
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31
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32 static int
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33 RemovePendingSizeEvents(void * userdata, SDL_Event *event)
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34 {
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35 SDL_Event *new_event = (SDL_Event *)userdata;
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36
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37 if (event->type == SDL_WINDOWEVENT &&
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38 event->window.event == SDL_WINDOWEVENT_RESIZED &&
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39 event->window.windowID == new_event->window.windowID) {
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40 /* We're about to post a new size event, drop the old one */
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41 return 0;
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42 }
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43 return 1;
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44 }
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45
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46 static int
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47 RemovePendingMoveEvents(void * userdata, SDL_Event *event)
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48 {
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49 SDL_Event *new_event = (SDL_Event *)userdata;
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50
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51 if (event->type == SDL_WINDOWEVENT &&
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52 event->window.event == SDL_WINDOWEVENT_MOVED &&
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53 event->window.windowID == new_event->window.windowID) {
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54 /* We're about to post a new move event, drop the old one */
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55 return 0;
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56 }
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57 return 1;
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58 }
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59
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60 int
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61 SDL_SendWindowEvent(SDL_Window * window, Uint8 windowevent, int data1,
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62 int data2)
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63 {
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64 int posted;
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65
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66 if (!window) {
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67 return 0;
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68 }
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69 switch (windowevent) {
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70 case SDL_WINDOWEVENT_SHOWN:
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71 if (window->flags & SDL_WINDOW_SHOWN) {
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72 return 0;
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73 }
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74 window->flags |= SDL_WINDOW_SHOWN;
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75 SDL_OnWindowShown(window);
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76 break;
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77 case SDL_WINDOWEVENT_HIDDEN:
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78 if (!(window->flags & SDL_WINDOW_SHOWN)) {
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79 return 0;
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80 }
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81 window->flags &= ~SDL_WINDOW_SHOWN;
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82 SDL_OnWindowHidden(window);
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83 break;
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84 case SDL_WINDOWEVENT_MOVED:
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85 if (SDL_WINDOWPOS_ISUNDEFINED(data1) ||
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86 SDL_WINDOWPOS_ISUNDEFINED(data2)) {
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87 return 0;
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88 }
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89 if (window->flags & SDL_WINDOW_FULLSCREEN) {
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90 window->fullscreen.x = data1;
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91 window->fullscreen.y = data1;
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92 } else {
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93 window->windowed.x = data1;
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94 window->windowed.y = data1;
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95 }
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96 if (data1 == window->x && data2 == window->y) {
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97 return 0;
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98 }
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99 window->x = data1;
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100 window->y = data2;
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101
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102 if (window->flags & SDL_WINDOW_FULLSCREEN) {
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103 /* Do we really want to do this? */
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104 return 0;
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105 }
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106 break;
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107 case SDL_WINDOWEVENT_RESIZED:
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108 if (window->flags & SDL_WINDOW_FULLSCREEN) {
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109 window->fullscreen.w = data1;
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110 window->fullscreen.h = data1;
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111 } else {
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112 window->windowed.w = data1;
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113 window->windowed.h = data1;
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114 }
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115 if (data1 == window->w && data2 == window->h) {
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116 return 0;
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117 }
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118 window->w = data1;
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119 window->h = data2;
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120 SDL_OnWindowResized(window);
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121
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122 if (window->flags & SDL_WINDOW_FULLSCREEN) {
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123 /* Do we really want to do this? */
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124 return 0;
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125 }
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126 break;
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127 case SDL_WINDOWEVENT_MINIMIZED:
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128 if (window->flags & SDL_WINDOW_MINIMIZED) {
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129 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
130 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
131 window->flags |= SDL_WINDOW_MINIMIZED;
3502
98a819296cdc Whenever a window becomes fullscreen, shown, unminimized, and has input focus it will change the display to the corresponding fullscreen video mode.
Sam Lantinga <slouken@libsdl.org>
parents: 2875
diff changeset
132 SDL_OnWindowMinimized(window);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
133 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
134 case SDL_WINDOWEVENT_MAXIMIZED:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
135 if (window->flags & SDL_WINDOW_MAXIMIZED) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
136 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
138 window->flags |= SDL_WINDOW_MAXIMIZED;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
139 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 case SDL_WINDOWEVENT_RESTORED:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141 if (!(window->flags & (SDL_WINDOW_MINIMIZED | SDL_WINDOW_MAXIMIZED))) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
143 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 window->flags &= ~(SDL_WINDOW_MINIMIZED | SDL_WINDOW_MAXIMIZED);
3502
98a819296cdc Whenever a window becomes fullscreen, shown, unminimized, and has input focus it will change the display to the corresponding fullscreen video mode.
Sam Lantinga <slouken@libsdl.org>
parents: 2875
diff changeset
145 SDL_OnWindowRestored(window);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 case SDL_WINDOWEVENT_ENTER:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148 if (window->flags & SDL_WINDOW_MOUSE_FOCUS) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151 window->flags |= SDL_WINDOW_MOUSE_FOCUS;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 case SDL_WINDOWEVENT_LEAVE:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 if (!(window->flags & SDL_WINDOW_MOUSE_FOCUS)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 window->flags &= ~SDL_WINDOW_MOUSE_FOCUS;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 case SDL_WINDOWEVENT_FOCUS_GAINED:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160 if (window->flags & SDL_WINDOW_INPUT_FOCUS) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163 window->flags |= SDL_WINDOW_INPUT_FOCUS;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164 SDL_OnWindowFocusGained(window);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 case SDL_WINDOWEVENT_FOCUS_LOST:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167 if (!(window->flags & SDL_WINDOW_INPUT_FOCUS)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 window->flags &= ~SDL_WINDOW_INPUT_FOCUS;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171 SDL_OnWindowFocusLost(window);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 /* Post the event, if desired */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 posted = 0;
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
177 if (SDL_GetEventState(SDL_WINDOWEVENT) == SDL_ENABLE) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 SDL_Event event;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 event.type = SDL_WINDOWEVENT;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180 event.window.event = windowevent;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181 event.window.data1 = data1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 event.window.data2 = data2;
3685
64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance.
Sam Lantinga <slouken@libsdl.org>
parents: 3573
diff changeset
183 event.window.windowID = window->id;
3573
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
184
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
185 /* Fixes queue overflow with resize events that aren't processed */
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
186 if (windowevent == SDL_WINDOWEVENT_RESIZED) {
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
187 SDL_FilterEvents(RemovePendingSizeEvents, &event);
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
188 }
5042
8c39b82dc7b0 Window move events have the same problem as size events on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 4429
diff changeset
189 if (windowevent == SDL_WINDOWEVENT_MOVED) {
8c39b82dc7b0 Window move events have the same problem as size events on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 4429
diff changeset
190 SDL_FilterEvents(RemovePendingMoveEvents, &event);
8c39b82dc7b0 Window move events have the same problem as size events on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 4429
diff changeset
191 }
3573
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
192
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
193 posted = (SDL_PushEvent(&event) > 0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
194 }
5115
686d795b1b29 When the last window is closed and the SDL_WINDOWEVENT_CLOSE event is sent, send the SDL_QUIT event.
krogoway
parents: 5042
diff changeset
195
686d795b1b29 When the last window is closed and the SDL_WINDOWEVENT_CLOSE event is sent, send the SDL_QUIT event.
krogoway
parents: 5042
diff changeset
196 if (windowevent == SDL_WINDOWEVENT_CLOSE) {
686d795b1b29 When the last window is closed and the SDL_WINDOWEVENT_CLOSE event is sent, send the SDL_QUIT event.
krogoway
parents: 5042
diff changeset
197 if ( !window->prev && !window->next ) {
686d795b1b29 When the last window is closed and the SDL_WINDOWEVENT_CLOSE event is sent, send the SDL_QUIT event.
krogoway
parents: 5042
diff changeset
198 // This is the last window in the list so send the SDL_QUIT event
686d795b1b29 When the last window is closed and the SDL_WINDOWEVENT_CLOSE event is sent, send the SDL_QUIT event.
krogoway
parents: 5042
diff changeset
199 SDL_SendQuit();
686d795b1b29 When the last window is closed and the SDL_WINDOWEVENT_CLOSE event is sent, send the SDL_QUIT event.
krogoway
parents: 5042
diff changeset
200 }
686d795b1b29 When the last window is closed and the SDL_WINDOWEVENT_CLOSE event is sent, send the SDL_QUIT event.
krogoway
parents: 5042
diff changeset
201 }
686d795b1b29 When the last window is closed and the SDL_WINDOWEVENT_CLOSE event is sent, send the SDL_QUIT event.
krogoway
parents: 5042
diff changeset
202
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203 return (posted);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
205
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
206 /* vi: set ts=4 sw=4 expandtab: */