116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2025 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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// Drag and drop event handling code for SDL
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#include "SDL_events_c.h"
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#include "SDL_dropevents_c.h"
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#include "../video/SDL_sysvideo.h" // for SDL_Window internals.
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static bool SDL_SendDrop(SDL_Window *window, const SDL_EventType evtype, const char *source, const char *data, float x, float y)
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{
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static bool app_is_dropping = false;
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static float last_drop_x = 0;
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static float last_drop_y = 0;
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bool posted = false;
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// Post the event, if desired
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if (SDL_EventEnabled(evtype)) {
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const bool need_begin = window ? !window->is_dropping : !app_is_dropping;
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SDL_Event event;
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if (need_begin) {
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SDL_zero(event);
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event.type = SDL_EVENT_DROP_BEGIN;
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event.common.timestamp = 0;
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event.drop.windowID = window ? window->id : 0;
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posted = SDL_PushEvent(&event);
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if (!posted) {
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return false;
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}
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if (window) {
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window->is_dropping = true;
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} else {
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app_is_dropping = true;
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}
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}
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SDL_zero(event);
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event.type = evtype;
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event.common.timestamp = 0;
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if (source) {
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event.drop.source = SDL_CreateTemporaryString(source);
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if (!event.drop.source) {
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return false;
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}
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}
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if (data) {
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event.drop.data = SDL_CreateTemporaryString(data);
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if (!event.drop.data) {
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return false;
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}
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}
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event.drop.windowID = window ? window->id : 0;
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if (evtype == SDL_EVENT_DROP_POSITION) {
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last_drop_x = x;
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last_drop_y = y;
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}
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event.drop.x = last_drop_x;
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event.drop.y = last_drop_y;
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posted = SDL_PushEvent(&event);
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if (posted && (evtype == SDL_EVENT_DROP_COMPLETE)) {
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if (window) {
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window->is_dropping = false;
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} else {
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app_is_dropping = false;
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}
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last_drop_x = 0;
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last_drop_y = 0;
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}
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}
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return posted;
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}
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bool SDL_SendDropFile(SDL_Window *window, const char *source, const char *file)
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{
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return SDL_SendDrop(window, SDL_EVENT_DROP_FILE, source, file, 0, 0);
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}
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bool SDL_SendDropPosition(SDL_Window *window, float x, float y)
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{
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return SDL_SendDrop(window, SDL_EVENT_DROP_POSITION, NULL, NULL, x, y);
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}
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bool SDL_SendDropText(SDL_Window *window, const char *text)
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{
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return SDL_SendDrop(window, SDL_EVENT_DROP_TEXT, NULL, text, 0, 0);
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}
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bool SDL_SendDropComplete(SDL_Window *window)
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{
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return SDL_SendDrop(window, SDL_EVENT_DROP_COMPLETE, NULL, NULL, 0, 0);
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}
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