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100 lines
3.4 KiB
C
100 lines
3.4 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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#ifdef SDL_VIDEO_DRIVER_ANDROID
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#include "SDL_androidpen.h"
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#include "../../events/SDL_pen_c.h"
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#include "../../core/android/SDL_android.h"
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#define ACTION_DOWN 0
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#define ACTION_UP 1
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#define ACTION_CANCEL 3
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#define ACTION_POINTER_DOWN 5
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#define ACTION_POINTER_UP 6
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#define ACTION_HOVER_EXIT 10
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void Android_OnPen(SDL_Window *window, int pen_id_in, SDL_PenDeviceType device_type, int button, int action, float x, float y, float p)
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{
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if (!window) {
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return;
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}
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// pointer index starts from zero.
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pen_id_in++;
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SDL_PenID pen = SDL_FindPenByHandle((void *) (size_t) pen_id_in);
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if (!pen) {
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// TODO: Query JNI for pen device info
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SDL_PenInfo peninfo;
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SDL_zero(peninfo);
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peninfo.capabilities = SDL_PEN_CAPABILITY_PRESSURE | SDL_PEN_CAPABILITY_ERASER;
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peninfo.num_buttons = 2;
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peninfo.subtype = SDL_PEN_TYPE_PEN;
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peninfo.device_type = device_type;
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pen = SDL_AddPenDevice(0, NULL, &peninfo, (void *) (size_t) pen_id_in);
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if (!pen) {
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SDL_Log("error: can't add a pen device %d", pen_id_in);
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return;
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}
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}
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SDL_SendPenMotion(0, pen, window, x, y);
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SDL_SendPenAxis(0, pen, window, SDL_PEN_AXIS_PRESSURE, p);
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// TODO: add more axis
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SDL_PenInputFlags current = SDL_GetPenStatus(pen, NULL, 0);
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int diff = current ^ button;
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if (diff != 0) {
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// Android only exposes BUTTON_STYLUS_PRIMARY and BUTTON_STYLUS_SECONDARY
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if (diff & SDL_PEN_INPUT_BUTTON_1)
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SDL_SendPenButton(0, pen, window, 1, (button & SDL_PEN_INPUT_BUTTON_1) != 0);
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if (diff & SDL_PEN_INPUT_BUTTON_2)
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SDL_SendPenButton(0, pen, window, 2, (button & SDL_PEN_INPUT_BUTTON_2) != 0);
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}
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// button contains DOWN/ERASER_TIP on DOWN/UP regardless of pressed state, use action to distinguish
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// we don't compare tip flags above because MotionEvent.getButtonState doesn't return stylus tip/eraser state.
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switch (action) {
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case ACTION_CANCEL:
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case ACTION_HOVER_EXIT:
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SDL_RemovePenDevice(0, pen);
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break;
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case ACTION_DOWN:
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case ACTION_POINTER_DOWN:
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SDL_SendPenTouch(0, pen, window, (button & SDL_PEN_INPUT_ERASER_TIP) != 0, true);
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break;
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case ACTION_UP:
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case ACTION_POINTER_UP:
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SDL_SendPenTouch(0, pen, window, (button & SDL_PEN_INPUT_ERASER_TIP) != 0, false);
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break;
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default:
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break;
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}
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}
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#endif // SDL_VIDEO_DRIVER_ANDROID
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