mirror of
git://projects.qi-hardware.com/gmenu2x.git
synced 2024-07-15 09:23:11 +03:00
944ab86f9c
Initialize in constructor and clean up in destructor instead of having separate init() and deinit() methods. Don't close file descriptor if open failed (ts_fd == -1). Renamed initialized() to available(), since it tests whether the touch screen was found, not whether an initialization was attempted. Improved code layout and minor other cleanups.
127 lines
3.3 KiB
C++
127 lines
3.3 KiB
C++
/***************************************************************************
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* Copyright (C) 2006 by Massimiliano Torromeo *
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* massimiliano.torromeo@gmail.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#include "touchscreen.h"
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#include <fcntl.h>
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#include <unistd.h>
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Touchscreen::Touchscreen() {
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calibrated = false;
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wasPressed = false;
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_handled = false;
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x = 0;
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y = 0;
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startX = 0;
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startY = 0;
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event.x = 0;
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event.y = 0;
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event.pressure = 0;
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#ifdef PLATFORM_GP2X
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ts_fd = open("/dev/touchscreen/wm97xx", O_RDONLY|O_NOCTTY);
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#else
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ts_fd = 0;
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#endif
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}
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Touchscreen::~Touchscreen() {
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if (ts_fd > 0) {
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close(ts_fd);
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}
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}
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void Touchscreen::calibrate() {
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if (event.pressure == 0) {
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calibX = ((event.x - 200) * 320 / 3750) / 4;
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calibY = (((event.y - 200) * 240 / 3750)) / 4;
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calibrated = true;
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}
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}
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bool Touchscreen::poll() {
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wasPressed = pressed();
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#ifdef PLATFORM_GP2X
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read(ts_fd, &event, sizeof(TS_EVENT));
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if (!calibrated) calibrate();
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if (event.pressure > 0) {
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x = ((event.x - 200) * 320 / 3750) - calibX;
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y = (240 - ((event.y - 200) * 240 / 3750)) - calibY;
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}
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#else
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SDL_PumpEvents();
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int mx, my;
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if (SDL_GetMouseState(&mx,&my) && SDL_BUTTON(1)) {
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x = mx;
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y = my;
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event.pressure = 1;
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} else {
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event.pressure = 0;
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}
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#endif
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_handled = false;
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if (!wasPressed && pressed()) {
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startX = x;
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startY = y;
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}
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return pressed();
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}
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bool Touchscreen::handled() {
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return _handled;
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}
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void Touchscreen::setHandled() {
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wasPressed = false;
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_handled = true;
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}
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bool Touchscreen::pressed() {
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return !_handled && event.pressure > 0;
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}
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bool Touchscreen::released() {
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return !pressed() && wasPressed;
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}
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bool Touchscreen::inRect(SDL_Rect r) {
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return !_handled &&
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(y >= r.y) && (y <= r.y + r.h) && (x >= r.x) && (x <= r.x + r.w);
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}
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bool Touchscreen::inRect(int x, int y, int w, int h) {
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SDL_Rect rect = { x, y, w, h };
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return inRect(rect);
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}
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bool Touchscreen::startedInRect(SDL_Rect r) {
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return !_handled &&
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(startY >= r.y) && (startY <= r.y + r.h) &&
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(startX >= r.x) && (startX <= r.x + r.w);
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}
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bool Touchscreen::startedInRect(int x, int y, int w, int h) {
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SDL_Rect rect = { x, y, w, h };
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return startedInRect(rect);
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}
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