227 lines
7 KiB
C
227 lines
7 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 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_c.h"
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#include "SDL_mouse_c.h"
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static int SDLCALL RemoveSupercededWindowEvents(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 == new_event->type &&
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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 SDL_SendWindowEvent(SDL_Window *window, SDL_EventType windowevent,
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int data1, int data2)
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{
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int posted;
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if (window == NULL) {
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return 0;
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}
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if (window->is_destroying) {
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return 0;
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}
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switch (windowevent) {
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case SDL_EVENT_WINDOW_SHOWN:
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if (!(window->flags & SDL_WINDOW_HIDDEN)) {
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return 0;
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}
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window->flags &= ~(SDL_WINDOW_HIDDEN | SDL_WINDOW_MINIMIZED);
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break;
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case SDL_EVENT_WINDOW_HIDDEN:
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if (window->flags & SDL_WINDOW_HIDDEN) {
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return 0;
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}
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window->flags |= SDL_WINDOW_HIDDEN;
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break;
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case SDL_EVENT_WINDOW_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_EVENT_WINDOW_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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SDL_CheckWindowPixelSizeChanged(window);
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return 0;
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}
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window->w = data1;
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window->h = data2;
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break;
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case SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED:
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if (data1 == window->last_pixel_w && data2 == window->last_pixel_h) {
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return 0;
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}
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window->last_pixel_w = data1;
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window->last_pixel_h = data2;
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break;
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case SDL_EVENT_WINDOW_MINIMIZED:
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if (window->flags & SDL_WINDOW_MINIMIZED) {
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return 0;
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}
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window->flags &= ~SDL_WINDOW_MAXIMIZED;
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window->flags |= SDL_WINDOW_MINIMIZED;
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break;
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case SDL_EVENT_WINDOW_MAXIMIZED:
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if (window->flags & SDL_WINDOW_MAXIMIZED) {
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return 0;
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}
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window->flags &= ~SDL_WINDOW_MINIMIZED;
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window->flags |= SDL_WINDOW_MAXIMIZED;
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break;
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case SDL_EVENT_WINDOW_RESTORED:
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if (!(window->flags & (SDL_WINDOW_MINIMIZED | SDL_WINDOW_MAXIMIZED))) {
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return 0;
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}
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window->flags &= ~(SDL_WINDOW_MINIMIZED | SDL_WINDOW_MAXIMIZED);
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break;
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case SDL_EVENT_WINDOW_MOUSE_ENTER:
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if (window->flags & SDL_WINDOW_MOUSE_FOCUS) {
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return 0;
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}
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window->flags |= SDL_WINDOW_MOUSE_FOCUS;
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break;
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case SDL_EVENT_WINDOW_MOUSE_LEAVE:
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if (!(window->flags & SDL_WINDOW_MOUSE_FOCUS)) {
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return 0;
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}
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window->flags &= ~SDL_WINDOW_MOUSE_FOCUS;
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break;
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case SDL_EVENT_WINDOW_FOCUS_GAINED:
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if (window->flags & SDL_WINDOW_INPUT_FOCUS) {
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return 0;
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}
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window->flags |= SDL_WINDOW_INPUT_FOCUS;
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break;
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case SDL_EVENT_WINDOW_FOCUS_LOST:
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if (!(window->flags & SDL_WINDOW_INPUT_FOCUS)) {
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return 0;
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}
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window->flags &= ~SDL_WINDOW_INPUT_FOCUS;
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break;
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case SDL_EVENT_WINDOW_DISPLAY_CHANGED:
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if (data1 == 0 || (SDL_DisplayID)data1 == window->last_displayID) {
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return 0;
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}
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window->last_displayID = (SDL_DisplayID)data1;
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break;
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default:
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break;
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}
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/* Post the event, if desired */
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posted = 0;
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if (SDL_EventEnabled(windowevent)) {
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SDL_Event event;
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event.type = windowevent;
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event.common.timestamp = 0;
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event.window.data1 = data1;
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event.window.data2 = data2;
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event.window.windowID = window->id;
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/* Fixes queue overflow with move/resize events that aren't processed */
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if (windowevent == SDL_EVENT_WINDOW_MOVED ||
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windowevent == SDL_EVENT_WINDOW_RESIZED ||
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windowevent == SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED ||
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windowevent == SDL_EVENT_WINDOW_EXPOSED) {
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SDL_FilterEvents(RemoveSupercededWindowEvents, &event);
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}
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posted = (SDL_PushEvent(&event) > 0);
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}
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switch (windowevent) {
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case SDL_EVENT_WINDOW_SHOWN:
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SDL_OnWindowShown(window);
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break;
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case SDL_EVENT_WINDOW_HIDDEN:
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SDL_OnWindowHidden(window);
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break;
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case SDL_EVENT_WINDOW_MOVED:
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SDL_OnWindowMoved(window);
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break;
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case SDL_EVENT_WINDOW_RESIZED:
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SDL_OnWindowResized(window);
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break;
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case SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED:
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SDL_OnWindowPixelSizeChanged(window);
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break;
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case SDL_EVENT_WINDOW_MINIMIZED:
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SDL_OnWindowMinimized(window);
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break;
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case SDL_EVENT_WINDOW_MAXIMIZED:
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SDL_OnWindowMaximized(window);
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break;
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case SDL_EVENT_WINDOW_RESTORED:
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SDL_OnWindowRestored(window);
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break;
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case SDL_EVENT_WINDOW_MOUSE_ENTER:
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SDL_OnWindowEnter(window);
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break;
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case SDL_EVENT_WINDOW_MOUSE_LEAVE:
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SDL_OnWindowLeave(window);
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break;
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case SDL_EVENT_WINDOW_FOCUS_GAINED:
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SDL_OnWindowFocusGained(window);
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break;
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case SDL_EVENT_WINDOW_FOCUS_LOST:
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SDL_OnWindowFocusLost(window);
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break;
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case SDL_EVENT_WINDOW_DISPLAY_CHANGED:
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SDL_OnWindowDisplayChanged(window);
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break;
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default:
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break;
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}
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if (windowevent == SDL_EVENT_WINDOW_CLOSE_REQUESTED) {
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if (!window->prev && !window->next) {
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if (SDL_GetHintBoolean(SDL_HINT_QUIT_ON_LAST_WINDOW_CLOSE, SDL_TRUE)) {
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SDL_SendQuit(); /* This is the last window in the list so send the SDL_EVENT_QUIT event */
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}
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}
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}
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return posted;
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}
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