src/events/SDL_windowevents.c
author Ryan C. Gordon <icculus@icculus.org>
Fri, 12 Aug 2016 19:59:00 -0400
changeset 10266 c09f06c4e8c8
parent 9998 f67cf37e9cd4
permissions -rw-r--r--
emscripten: send fake mouse events for touches, like other targets do. (This really should be handled at the higher level and not in the individual targets, but this fixes the immediate bug.)
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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/*
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  Simple DirectMedia Layer
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  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../SDL_internal.h"
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/* Window event handling code for SDL */
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#include "SDL_events.h"
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#include "SDL_events_c.h"
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#include "SDL_mouse_c.h"
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#include "../video/SDL_sysvideo.h"
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static int
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RemovePendingResizedEvents(void * userdata, SDL_Event *event)
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{
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    SDL_Event *new_event = (SDL_Event *)userdata;
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    if (event->type == SDL_WINDOWEVENT &&
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        event->window.event == SDL_WINDOWEVENT_RESIZED &&
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        event->window.windowID == new_event->window.windowID) {
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        /* We're about to post a new size event, drop the old one */
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        return 0;
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    }
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    return 1;
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}
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static int
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RemovePendingSizeChangedEvents(void * userdata, SDL_Event *event)
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{
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    SDL_Event *new_event = (SDL_Event *)userdata;
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    if (event->type == SDL_WINDOWEVENT &&
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        event->window.event == SDL_WINDOWEVENT_SIZE_CHANGED &&
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        event->window.windowID == new_event->window.windowID) {
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        /* We're about to post a new size event, drop the old one */
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        return 0;
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    }
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    return 1;
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}
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static int
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RemovePendingMoveEvents(void * userdata, SDL_Event *event)
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{
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    SDL_Event *new_event = (SDL_Event *)userdata;
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    if (event->type == SDL_WINDOWEVENT &&
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        event->window.event == SDL_WINDOWEVENT_MOVED &&
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        event->window.windowID == new_event->window.windowID) {
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        /* We're about to post a new move event, drop the old one */
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        return 0;
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    }
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    return 1;
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}
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int
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SDL_SendWindowEvent(SDL_Window * window, Uint8 windowevent, int data1,
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                    int data2)
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{
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    int posted;
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    if (!window) {
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        return 0;
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    }
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    switch (windowevent) {
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    case SDL_WINDOWEVENT_SHOWN:
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        if (window->flags & SDL_WINDOW_SHOWN) {
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            return 0;
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        }
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        window->flags &= ~SDL_WINDOW_HIDDEN;
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        window->flags |= SDL_WINDOW_SHOWN;
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        SDL_OnWindowShown(window);
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        break;
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    case SDL_WINDOWEVENT_HIDDEN:
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        if (!(window->flags & SDL_WINDOW_SHOWN)) {
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            return 0;
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        }
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        window->flags &= ~SDL_WINDOW_SHOWN;
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        window->flags |= SDL_WINDOW_HIDDEN;
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        SDL_OnWindowHidden(window);
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        break;
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    case SDL_WINDOWEVENT_MOVED:
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        if (SDL_WINDOWPOS_ISUNDEFINED(data1) ||
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            SDL_WINDOWPOS_ISUNDEFINED(data2)) {
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            return 0;
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        }
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        if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
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            window->windowed.x = data1;
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            window->windowed.y = data2;
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        }
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        if (data1 == window->x && data2 == window->y) {
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            return 0;
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        }
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        window->x = data1;
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        window->y = data2;
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        break;
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    case SDL_WINDOWEVENT_RESIZED:
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        if (!(window->flags & SDL_WINDOW_FULLSCREEN)) {
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            window->windowed.w = data1;
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            window->windowed.h = data2;
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        }
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        if (data1 == window->w && data2 == window->h) {
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   120
            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
   121
        }
1915
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
   122
        window->w = data1;
a228436a2404 Implemented multi-window OpenGL program with test framework.
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
   123
        window->h = data2;
5166
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
Sam Lantinga <slouken@libsdl.org>
parents: 5147
diff changeset
   124
        SDL_OnWindowResized(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
   125
        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
   126
    case SDL_WINDOWEVENT_MINIMIZED:
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
   127
        if (window->flags & SDL_WINDOW_MINIMIZED) {
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
   128
            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
   129
        }
9968
0a420ec24b6a Fixed bug 3202 - Fix renderer visibility on a window maximized directly from the minimized state
David Ludwig <dludwig@pobox.com>
parents: 9619
diff changeset
   130
        window->flags &= ~SDL_WINDOW_MAXIMIZED;
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
   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
        }
9968
0a420ec24b6a Fixed bug 3202 - Fix renderer visibility on a window maximized directly from the minimized state
David Ludwig <dludwig@pobox.com>
parents: 9619
diff changeset
   138
        window->flags &= ~SDL_WINDOW_MINIMIZED;
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
   139
        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
   140
        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
   141
    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
   142
        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
   143
            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
   144
        }
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
   145
        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
   146
        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
   147
        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
   148
    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
   149
        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
   150
            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
   151
        }
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
        window->flags |= SDL_WINDOW_MOUSE_FOCUS;
7089
257fc4e541e1 Send mouse leave updates for Windows and X11.
Jørgen P. Tjernø <jorgen@valvesoftware.com>
parents: 6885
diff changeset
   153
        SDL_OnWindowEnter(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
   154
        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
   155
    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
   156
        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
   157
            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
   158
        }
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
        window->flags &= ~SDL_WINDOW_MOUSE_FOCUS;
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 7089
diff changeset
   160
        SDL_OnWindowLeave(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
   161
        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
   162
    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
   163
        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
   164
            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
   165
        }
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
        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
   167
        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
   168
        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
   169
    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
   170
        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
   171
            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
   172
        }
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
        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
   174
        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
   175
        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
   176
    }
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
   177
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
    /* 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
   179
    posted = 0;
4429
faa9fc8e7f67 General improvements for user custom event registration
Sam Lantinga <slouken@libsdl.org>
parents: 3697
diff changeset
   180
    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
   181
        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
   182
        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
   183
        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
   184
        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
   185
        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
   186
        event.window.windowID = window->id;
3573
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
   187
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
   188
        /* Fixes queue overflow with resize events that aren't processed */
6512
4beb596ccfae WINDOW_RESIZED events shouldn't flush WINDOW_SIZE_CHANGED events and vice versa.
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   189
        if (windowevent == SDL_WINDOWEVENT_RESIZED) {
4beb596ccfae WINDOW_RESIZED events shouldn't flush WINDOW_SIZE_CHANGED events and vice versa.
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   190
            SDL_FilterEvents(RemovePendingResizedEvents, &event);
4beb596ccfae WINDOW_RESIZED events shouldn't flush WINDOW_SIZE_CHANGED events and vice versa.
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   191
        }
4beb596ccfae WINDOW_RESIZED events shouldn't flush WINDOW_SIZE_CHANGED events and vice versa.
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   192
        if (windowevent == SDL_WINDOWEVENT_SIZE_CHANGED) {
4beb596ccfae WINDOW_RESIZED events shouldn't flush WINDOW_SIZE_CHANGED events and vice versa.
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
   193
            SDL_FilterEvents(RemovePendingSizeChangedEvents, &event);
3573
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
   194
        }
5042
8c39b82dc7b0 Window move events have the same problem as size events on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 4429
diff changeset
   195
        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
   196
            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
   197
        }
3573
41cd18e05965 Fixed bug #666
Sam Lantinga <slouken@libsdl.org>
parents: 3502
diff changeset
   198
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
   199
        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
   200
    }
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 7089
diff changeset
   201
7609
6e1abd05047c Backed out changeset 3f487d7d2d1d
Ryan C. Gordon <icculus@icculus.org>
parents: 7608
diff changeset
   202
    if (windowevent == SDL_WINDOWEVENT_CLOSE) {
6e1abd05047c Backed out changeset 3f487d7d2d1d
Ryan C. Gordon <icculus@icculus.org>
parents: 7608
diff changeset
   203
        if ( !window->prev && !window->next ) {
6e1abd05047c Backed out changeset 3f487d7d2d1d
Ryan C. Gordon <icculus@icculus.org>
parents: 7608
diff changeset
   204
            /* This is the last window in the list so send the SDL_QUIT event */
6e1abd05047c Backed out changeset 3f487d7d2d1d
Ryan C. Gordon <icculus@icculus.org>
parents: 7608
diff changeset
   205
            SDL_SendQuit();
6e1abd05047c Backed out changeset 3f487d7d2d1d
Ryan C. Gordon <icculus@icculus.org>
parents: 7608
diff changeset
   206
        }
6e1abd05047c Backed out changeset 3f487d7d2d1d
Ryan C. Gordon <icculus@icculus.org>
parents: 7608
diff changeset
   207
    }
6e1abd05047c Backed out changeset 3f487d7d2d1d
Ryan C. Gordon <icculus@icculus.org>
parents: 7608
diff changeset
   208
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
   209
    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
   210
}
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
   211
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
   212
/* vi: set ts=4 sw=4 expandtab: */