/**************************************************************************** * NxWidgets/nxwm/src/capplicationwindow.cxx * * Copyright (C) 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX, NxWidgets, nor the names of its contributors * me be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include "nxwmconfig.hxx" #include "nxwmglyphs.hxx" #include "ccalibration.hxx" /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /**************************************************************************** * Configuration */ #ifndef CONFIG_NX # error "NX is not enabled (CONFIG_NX)" #endif /** * Positional/size data for the calibration lines and circles */ #define CALIBRATION_LEFTX 40 #define CALIBRATION_RIGHTX (windowSize.w - 41) #define CALIBRATION_TOPY 40 #define CALIBRATION_BOTTOMY (windowSize.h - 41) #define CALIBRATION_CIRCLE_RADIUS 16 #define CALIBRATION_LINE_THICKNESS 2 /**************************************************************************** * CCalibration Implementation Classes ****************************************************************************/ using namespace NxWM; /** * CCalibration Constructor * * @param window. The window to use for the calibration display * @param touchscreen. An instance of the class that wraps the touchscreen device. */ CCalibration::CCalibration(CFullScreenWindow *window, CTouchscreen *touchscreen) { // Initialize state data m_window = window; m_touchscreen = touchscreen; m_state = CALIB_NOT_STARTED; m_stop = false; m_touched = false; } /** * CCalibration Destructor */ CCalibration::~CCalibration(void) { // Although we did not create the window, the rule is that I have to dispose // of it delete m_window; } /** * Each implementation of IApplication must provide a method to recover * the contained IApplicationWindow instance. */ IApplicationWindow *CCalibration::getWindow(void) const { return static_cast(m_window); } /** * Get the icon associated with the application * * @return An instance if IBitmap that may be used to rend the * application's icon. This is an new IBitmap instance that must * be deleted by the caller when it is no long needed. */ NXWidgets::IBitmap *CCalibration::getIcon(void) { NXWidgets::CRlePaletteBitmap *bitmap = new NXWidgets::CRlePaletteBitmap(&CONFIG_NXWM_CALIBRATION_ICON); return bitmap; } /** * Get the name string associated with the application * * @return A copy if CNxString that contains the name of the application. */ NXWidgets::CNxString CCalibration::getName(void) { return NXWidgets::CNxString("Touchscreen Calibration"); } /** * Start the application (perhaps in the minimized state). * * @return True if the application was successfully started. */ bool CCalibration::run(void) { // Provide the initial display m_state = CALIB_NOT_STARTED; stateMachine(); // Loop until calibration completes while (!m_stop) { // Wait for the next raw touchscreen input struct touch_sample_s sample; while (!m_touchscreen->waitRawTouchData(sample)); // Then process the raw touchscreen input touchscreenInput(sample); } return !m_stop; } /** * Stop the application. */ void CCalibration::stop(void) { m_stop = true; } /** * The application window is hidden (either it is minimized or it is * maximized, but it is not at the top of the hierarchy) */ void CCalibration::hide(void) { #warning "Revisit" } /** * Redraw the entire window. The application has been maximized or * otherwise moved to the top of the hierarchy. This method is called from * CTaskbar when the application window must be displayed */ void CCalibration::redraw(void) { // Reset the state machine and start over if (m_state != CALIB_COMPLETE) { m_state = CALIB_NOT_STARTED; stateMachine(); } } /** * Wait for calibration data to be received. * * @return True if the calibration data was successfully obtained. */ bool CCalibration::waitCalibrationData(struct SCalibrationData &data) { // Wait until calibration is finished while (m_state != CALIB_COMPLETE) { int ret = sem_wait(&m_waitSem); DEBUGASSERT(ret == 0 || errno == EINTR); } // Recover the window instance contained in the full screen window NXWidgets::INxWindow *window = m_window->getWindow(); // Get the size of the fullscreen window struct nxgl_size_s windowSize; if (!window->getSize(&windowSize)) { return false; } // Calculate the calibration parameters // // (scaledX - LEFTX) / (rawX - leftX) = (RIGHTX - LEFTX) / (rightX - leftX) // scaledX = (rawX - leftX) * (RIGHTX - LEFTX) / (rightX - leftX) + LEFTX // = rawX * xSlope + (LEFTX - leftX * xSlope) // = rawX * xSlope + xOffset // // where: // xSlope = (RIGHTX - LEFTX) / (rightX - leftX) // xOffset = (LEFTX - leftX * xSlope) b16_t leftX = (m_calibData[CALIB_UPPER_LEFT_INDEX].x + m_calibData[CALIB_LOWER_LEFT_INDEX].x) << 15; b16_t rightX = (m_calibData[CALIB_UPPER_RIGHT_INDEX].x + m_calibData[CALIB_LOWER_RIGHT_INDEX].x) << 15; data.xSlope = b16divb16(itob16(CALIBRATION_RIGHTX - CALIBRATION_LEFTX), (rightX - leftX)); data.xOffset = itob16(CALIBRATION_LEFTX) - b16mulb16(leftX, data.xSlope); gdbg("New xSlope: %08x xOffset: %08x\n", data.xSlope, data.xOffset); // Similarly for Y // // (scaledY - TOPY) / (rawY - topY) = (BOTTOMY - TOPY) / (bottomY - topY) // scaledY = (rawY - topY) * (BOTTOMY - TOPY) / (bottomY - topY) + TOPY // = rawY * ySlope + (TOPY - topY * ySlope) // = rawY * ySlope + yOffset // // where: // ySlope = (BOTTOMY - TOPY) / (bottomY - topY) // yOffset = (TOPY - topY * ySlope) b16_t topY = (m_calibData[CALIB_UPPER_LEFT_INDEX].y + m_calibData[CALIB_UPPER_RIGHT_INDEX].y) << 15; b16_t bottomY = (m_calibData[CALIB_LOWER_LEFT_INDEX].y + m_calibData[CALIB_LOWER_RIGHT_INDEX].y) << 15; data.ySlope = b16divb16(itob16(CALIBRATION_BOTTOMY - CALIBRATION_TOPY), (bottomY - topY)); data.yOffset = itob16(CALIBRATION_TOPY) - b16mulb16(topY, data.ySlope); gdbg("New ySlope: %08x yOffset: %08x\n", data.ySlope, data.yOffset); return true; } /** * Accept raw touchscreen input. * * @param sample Touchscreen input sample */ void CCalibration::touchscreenInput(struct touch_sample_s &sample) { // Is this a new touch event? Or is it a drag event? if ((sample.point[0].flags & (TOUCH_DOWN|TOUCH_MOVE)) != 0) { // Yes.. but ignore drag events if we did not see the matching // touch down event if ((sample.point[0].flags & TOUCH_DOWN) != 0 || m_touched) { // Yes.. save the touch position and wait for the TOUCH_UP report m_touchPos.x = sample.point[0].x; m_touchPos.y = sample.point[0].y; gvdbg("Touch id: %d flags: %02x x: %d y: %d h: %d w: %d pressure: %d\n", sample.point[0].id, sample.point[0].flags, sample.point[0].x, sample.point[0].y, sample.point[0].h, sample.point[0].w, sample.point[0].pressure); // Remember that we saw the touch down event m_touched = true; } } // Was the touch released? else if ((sample.point[0].flags & TOUCH_UP) != 0) { // Yes.. did we see the matching pen down event? if (m_touched) { // Yes.. invoke the state machine. gvdbg("State: %d Screen x: %d y: %d Touch x: %d y: %d\n", m_state, m_screenInfo.pos.x, m_screenInfo.pos.y, m_touchPos.x, m_touchPos.y); stateMachine(); } // In any event, the touch is not down m_touched = false; } } /** * This is the calibration state machine. It is called initially and then * as new touchscreen data is received. */ void CCalibration::stateMachine(void) { // Recover the window instance contained in the full screen window NXWidgets::INxWindow *window = m_window->getWindow(); // Get the size of the fullscreen window struct nxgl_size_s windowSize; if (!window->getSize(&windowSize)) { return; } switch (m_state) { default: case CALIB_NOT_STARTED: { // Clear the entire screen // Get the widget control associated with the full screen window NXWidgets::CWidgetControl *control = window->getWidgetControl(); // Get the CCGraphicsPort instance for this window NXWidgets::CGraphicsPort *port = control->getGraphicsPort(); // Fill the entire window with the background color port->drawFilledRect(0, 0, windowSize.w, windowSize.h, CONFIG_NXWM_DEFAULT_BACKGROUNDCOLOR); // Then draw the first calibration screen m_screenInfo.pos.x = CALIBRATION_LEFTX; m_screenInfo.pos.y = CALIBRATION_TOPY; m_screenInfo.lineColor = CONFIG_NXWM_CALIBRATION_LINECOLOR; m_screenInfo.circleFillColor = CONFIG_NXWM_CALIBRATION_CIRCLECOLOR; showCalibration(); // Then set up the current state m_state = CALIB_UPPER_LEFT; } break; case CALIB_UPPER_LEFT: { // A touch has been received while in the CALIB_UPPER_LEFT state. // Save the touch data and set up the next calibration display m_calibData[CALIB_UPPER_LEFT_INDEX].x = m_touchPos.x; m_calibData[CALIB_UPPER_LEFT_INDEX].y = m_touchPos.y; // Clear the previous screen by re-drawing it using the backgro9und // color. That is much faster than clearing the whole display m_screenInfo.lineColor = CONFIG_NXWM_CALIBRATION_BACKGROUNDCOLOR; m_screenInfo.circleFillColor = CONFIG_NXWM_CALIBRATION_BACKGROUNDCOLOR; showCalibration(); // Then draw the next calibration screen m_screenInfo.pos.x = CALIBRATION_RIGHTX; m_screenInfo.pos.y = CALIBRATION_TOPY; m_screenInfo.lineColor = CONFIG_NXWM_CALIBRATION_LINECOLOR; m_screenInfo.circleFillColor = CONFIG_NXWM_CALIBRATION_CIRCLECOLOR; showCalibration(); // Then set up the current state m_state = CALIB_UPPER_RIGHT; } break; case CALIB_UPPER_RIGHT: { // A touch has been received while in the CALIB_UPPER_RIGHT state. // Save the touch data and set up the next calibration display m_calibData[CALIB_UPPER_RIGHT_INDEX].x = m_touchPos.x; m_calibData[CALIB_UPPER_RIGHT_INDEX].y = m_touchPos.y; // Clear the previous screen by re-drawing it using the backgro9und // color. That is much faster than clearing the whole display m_screenInfo.lineColor = CONFIG_NXWM_CALIBRATION_BACKGROUNDCOLOR; m_screenInfo.circleFillColor = CONFIG_NXWM_CALIBRATION_BACKGROUNDCOLOR; showCalibration(); // Then draw the next calibration screen m_screenInfo.pos.x = CALIBRATION_RIGHTX; m_screenInfo.pos.y = CALIBRATION_BOTTOMY; m_screenInfo.lineColor = CONFIG_NXWM_CALIBRATION_LINECOLOR; m_screenInfo.circleFillColor = CONFIG_NXWM_CALIBRATION_CIRCLECOLOR; showCalibration(); // Then set up the current state m_state = CALIB_LOWER_RIGHT; } break; case CALIB_LOWER_RIGHT: { // A touch has been received while in the CALIB_LOWER_RIGHT state. // Save the touch data and set up the next calibration display m_calibData[CALIB_LOWER_RIGHT_INDEX].x = m_touchPos.x; m_calibData[CALIB_LOWER_RIGHT_INDEX].y = m_touchPos.y; // Clear the previous screen by re-drawing it using the backgro9und // color. That is much faster than clearing the whole display m_screenInfo.lineColor = CONFIG_NXWM_CALIBRATION_BACKGROUNDCOLOR; m_screenInfo.circleFillColor = CONFIG_NXWM_CALIBRATION_BACKGROUNDCOLOR; showCalibration(); // Then draw the next calibration screen m_screenInfo.pos.x = CALIBRATION_LEFTX; m_screenInfo.pos.y = CALIBRATION_BOTTOMY; m_screenInfo.lineColor = CONFIG_NXWM_CALIBRATION_LINECOLOR; m_screenInfo.circleFillColor = CONFIG_NXWM_CALIBRATION_CIRCLECOLOR; showCalibration(); // Then set up the current state m_state = CALIB_LOWER_LEFT; } break; case CALIB_LOWER_LEFT: { // A touch has been received while in the CALIB_LOWER_LEFT state. // Save the touch data and set up the next calibration display m_calibData[CALIB_LOWER_LEFT_INDEX].x = m_touchPos.x; m_calibData[CALIB_LOWER_LEFT_INDEX].y = m_touchPos.y; // Inform any waiter that calibration is complete m_state = CALIB_COMPLETE; sem_post(&m_waitSem); } break; case CALIB_COMPLETE: // Might happen... do nothing if it does break; } gvdbg("State: %d Screen x: %d y: %d\n", m_state, m_screenInfo.pos.x, m_screenInfo.pos.y); } /** * Presents the next calibration screen * * @param screenInfo Describes the next calibration screen */ void CCalibration::showCalibration(void) { // Recover the window instance contained in the full screen window NXWidgets::INxWindow *window = m_window->getWindow(); // Get the widget control associated with the full screen window NXWidgets::CWidgetControl *control = window->getWidgetControl(); // Get the CCGraphicsPort instance for this window NXWidgets::CGraphicsPort *port = control->getGraphicsPort(); // Get the size of the fullscreen window struct nxgl_size_s windowSize; if (!window->getSize(&windowSize)) { return; } // Draw the circle at the center of the touch position port->drawFilledCircle(&m_screenInfo.pos, CALIBRATION_CIRCLE_RADIUS, m_screenInfo.circleFillColor); /* Draw horizontal line */ port->drawFilledRect(0, m_screenInfo.pos.y, windowSize.w, CALIBRATION_LINE_THICKNESS, m_screenInfo.lineColor); /* Draw vertical line */ port->drawFilledRect(m_screenInfo.pos.x, 0, CALIBRATION_LINE_THICKNESS, windowSize.h, m_screenInfo.lineColor); }