A basic graphics package for the LPC4088 Display Module.
Dependents: lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI lpc4088_displaymodule_fs_aid ... more
Fork of DMBasicGUI by
Application/AppTouchCalibration.cpp
- Committer:
- embeddedartists
- Date:
- 2019-11-04
- Revision:
- 22:f0d00f29bfeb
- Parent:
- 21:0038059e3a8f
File content as of revision 22:f0d00f29bfeb:
/* * Copyright 2014 Embedded Artists AB * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "mbed.h" #include "AppTouchCalibration.h" #include "lpc_swim_font.h" /****************************************************************************** * Defines and typedefs *****************************************************************************/ #define BTN_OFF 20 /****************************************************************************** * Global variables *****************************************************************************/ /****************************************************************************** * Private functions *****************************************************************************/ static void buttonClicked(uint32_t x) { bool* done = (bool*)x; *done = true; } void AppTouchCalibration::draw() { // Prepare fullscreen swim_window_open(_win, _disp->width(), _disp->height(), // full size (COLOR_T*)_fb, 0,0,_disp->width()-1, _disp->height()-1, // window position and size 1, // border WHITE, WHITE, BLACK); // colors: pen, backgr, forgr swim_set_title(_win, "Touch Calibration", BLACK); // Prepare status area in the middle swim_window_open(_msg, _disp->width(), _disp->height(), // full size (COLOR_T*)_fb, 50,_disp->height()/2-15,_disp->width()-50, _disp->height()/2+15, // window position and size 0, // border BLACK, WHITE, BLACK); // colors: pen, backgr, forgr showStatus("Press the crosshairs in each of the corners"); // Create (but don't show) the button _btn = new ImageButton(_win->fb, _win->xpmax - BTN_OFF - _resOk->width(), _win->ypmax - BTN_OFF - _resOk->height(), _resOk->width(), _resOk->height()); _btn->loadImages(_resOk); } void AppTouchCalibration::drawMarker(uint16_t x, uint16_t y, bool erase) { // The markers must be drawn at exact locations to get a good calibration. // However the lpc_swim functions take the window's title bar into // consideration which will move them. To combat this the marker's // coordinates will have to be moved x -= _win->xpvmin; y -= _win->ypvmin; swim_set_pen_color(_win, (erase ? _win->bkg : BLACK)); swim_put_line(_win, x-15, y, x+15, y); swim_put_line(_win, x, y-15, x, y+15); swim_put_circle(_win, x, y, 10, false); } bool AppTouchCalibration::calibrate() { bool morePoints = true; bool lastPoint = false; uint16_t x, y; int point = 0; do { if (_touch->calibrateStart() != TouchPanel::TouchError_Ok) { showStatus("Failed to start calibration\n"); break; } while (morePoints) { if (point++ > 0) { // erase old location drawMarker(x, y, true); } if (_touch->getNextCalibratePoint(&x, &y, &lastPoint) != TouchPanel::TouchError_Ok) { showStatus("Failed to get calibration point\n"); break; } drawMarker(x, y, false); if (lastPoint) { showStatus("Last calibration point. After this the data will"); showStatus("be saved, which can take a couple of seconds!", 1); } if (_touch->waitForCalibratePoint(&morePoints, 0) != TouchPanel::TouchError_Ok) { showStatus("Failed to get user click\n"); break; } } if (morePoints) { // aborted calibration due to error(s) break; } // erase old location drawMarker(x, y, true); } while(0); return !morePoints; } void AppTouchCalibration::showStatus(const char* message, int line) { if (line == 0) { swim_clear_screen(_msg, _msg->bkg); swim_put_text_centered_win(_msg, message, 0); } else { swim_put_text_centered_win(_msg, message, line*swim_get_font_height(_msg)); } DMBoard::instance().logger()->printf("[CALIB] %s\n", message); } /****************************************************************************** * Public functions *****************************************************************************/ AppTouchCalibration::AppTouchCalibration() : _disp(NULL), _touch(NULL), _win(NULL), _fb(NULL), _btn(NULL), _resOk(NULL) { } AppTouchCalibration::~AppTouchCalibration() { teardown(); } bool AppTouchCalibration::setup() { _disp = DMBoard::instance().display(); _touch = DMBoard::instance().touchPanel(); _win = (SWIM_WINDOW_T*)malloc(sizeof(SWIM_WINDOW_T)); _msg = (SWIM_WINDOW_T*)malloc(sizeof(SWIM_WINDOW_T)); _fb = _disp->allocateFramebuffer(); return (_win != NULL && _msg != NULL && _fb != NULL); } void AppTouchCalibration::runToCompletion() { // Alternative 1: use the calling thread's context to run in bool done = false; draw(); _btn->setAction(buttonClicked, (uint32_t)&done); void* oldFB = _disp->swapFramebuffer(_fb); // Run calibration if (calibrate()) { showStatus("Calibration Completed. Test to draw!"); _btn->draw(); } else { // Something went wrong. The error is already shown! // Without touch there is no point in continuing, ask // user to reset. swim_put_text_centered_win(_win, "Without touch there is nothing to do. Press RESET !", 2*_disp->height()/3); while(1) { ThisThread::sleep_for(5000); } } // Allow user to draw. Exit by pressing button swim_set_pen_color(_win, BLACK); touch_coordinate_t coord; while(!done) { // wait for a new touch signal (signal is sent from AppLauncher, // which listens for touch events) ThisThread::flags_wait_any(0x1); if (_touch->read(coord) == TouchPanel::TouchError_Ok) { if (coord.z > 0) { //swim_put_pixel(_win, coord.x, coord.y); swim_put_box(_win, coord.x-1, coord.y-1, coord.x+1, coord.y+1); } if (_btn->handle(coord.x, coord.y, coord.z > 0)) { _btn->draw(); } } } // User has clicked the button, restore the original FB _disp->swapFramebuffer(oldFB); swim_window_close(_win); swim_window_close(_msg); } bool AppTouchCalibration::teardown() { if (_win != NULL) { free(_win); _win = NULL; } if (_msg != NULL) { free(_msg); _msg = NULL; } if (_fb != NULL) { free(_fb); _fb = NULL; } if (_btn != NULL) { delete _btn; _btn = NULL; } return true; } void AppTouchCalibration::addResource(Resources id, Resource* res) { _resOk = res; }