forked from Green-Sky/tomato
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2024 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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#ifdef SDL_VIDEO_DRIVER_N3DS
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#include <3ds.h>
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#include "../../events/SDL_touch_c.h"
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#include "SDL_n3dstouch.h"
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#define N3DS_TOUCH_ID 0
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/*
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Factors used to convert touchscreen coordinates to
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SDL's 0-1 values. Note that the N3DS's screen is
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internally in a portrait disposition so the
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GSP_SCREEN constants are flipped.
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*/
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#define TOUCHSCREEN_SCALE_X 1.0f / (GSP_SCREEN_HEIGHT_BOTTOM - 1)
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#define TOUCHSCREEN_SCALE_Y 1.0f / (GSP_SCREEN_WIDTH - 1)
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void N3DS_InitTouch(void)
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{
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SDL_AddTouch(N3DS_TOUCH_ID, SDL_TOUCH_DEVICE_DIRECT, "Touchscreen");
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}
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void N3DS_QuitTouch(void)
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{
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SDL_DelTouch(N3DS_TOUCH_ID);
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}
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void N3DS_PollTouch(void)
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{
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touchPosition touch;
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static SDL_bool was_pressed = SDL_FALSE;
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SDL_bool pressed;
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hidTouchRead(&touch);
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pressed = (touch.px != 0 || touch.py != 0);
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if (pressed != was_pressed) {
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was_pressed = pressed;
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SDL_SendTouch(0, N3DS_TOUCH_ID,
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0,
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NULL,
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pressed,
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touch.px * TOUCHSCREEN_SCALE_X,
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touch.py * TOUCHSCREEN_SCALE_Y,
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pressed ? 1.0f : 0.0f);
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} else if (pressed) {
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SDL_SendTouchMotion(0, N3DS_TOUCH_ID,
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0,
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NULL,
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touch.px * TOUCHSCREEN_SCALE_X,
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touch.py * TOUCHSCREEN_SCALE_Y,
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1.0f);
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}
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}
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#endif /* SDL_VIDEO_DRIVER_N3DS */
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