Chris Womack / sampleGUI

Sample GUI for LPC4088. Base code to begin dev

Dependencies:   DMBasicGUI DMSupport

Fork of lpc4088_displaymodule_shipped_demo by Embedded Artists

AppImageViewer.cpp@4:a7cbb22e4348, 2015-04-28 (annotated)

Committer:
alindvall
Date:
Tue Apr 28 12:21:14 2015 +0000
Revision:
4:a7cbb22e4348
Parent:
0:b94e330c98ac 
Updated to latest version of the DMSupport and DMBasicGUI libraries

Who changed what in which revision?

UserRevisionLine numberNew contents of line
alindvall 0:b94e330c98ac 1 /*
alindvall 0:b94e330c98ac 2 * Copyright 2014 Embedded Artists AB
alindvall 0:b94e330c98ac 3 *
alindvall 0:b94e330c98ac 4 * Licensed under the Apache License, Version 2.0 (the "License");
alindvall 0:b94e330c98ac 5 * you may not use this file except in compliance with the License.
alindvall 0:b94e330c98ac 6 * You may obtain a copy of the License at
alindvall 0:b94e330c98ac 7 *
alindvall 0:b94e330c98ac 8 * http://www.apache.org/licenses/LICENSE-2.0
alindvall 0:b94e330c98ac 9 *
alindvall 0:b94e330c98ac 10 * Unless required by applicable law or agreed to in writing, software
alindvall 0:b94e330c98ac 11 * distributed under the License is distributed on an "AS IS" BASIS,
alindvall 0:b94e330c98ac 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
alindvall 0:b94e330c98ac 13 * See the License for the specific language governing permissions and
alindvall 0:b94e330c98ac 14 * limitations under the License.
alindvall 0:b94e330c98ac 15 */
alindvall 0:b94e330c98ac 16
alindvall 0:b94e330c98ac 17
alindvall 0:b94e330c98ac 18 #include "mbed.h"
alindvall 0:b94e330c98ac 19 #include "AppImageViewer.h"
alindvall 0:b94e330c98ac 20 #include "lpc_swim_font.h"
alindvall 0:b94e330c98ac 21 #include "lpc_swim_image.h"
alindvall 0:b94e330c98ac 22 #include "Image.h"
alindvall 0:b94e330c98ac 23
alindvall 0:b94e330c98ac 24 /******************************************************************************
alindvall 0:b94e330c98ac 25 * Defines and typedefs
alindvall 0:b94e330c98ac 26 *****************************************************************************/
alindvall 0:b94e330c98ac 27
alindvall 0:b94e330c98ac 28 #define BTN_OFF 20
alindvall 0:b94e330c98ac 29
alindvall 0:b94e330c98ac 30 /******************************************************************************
alindvall 0:b94e330c98ac 31 * Global variables
alindvall 0:b94e330c98ac 32 *****************************************************************************/
alindvall 0:b94e330c98ac 33
alindvall 0:b94e330c98ac 34 /******************************************************************************
alindvall 0:b94e330c98ac 35 * Private functions
alindvall 0:b94e330c98ac 36 *****************************************************************************/
alindvall 0:b94e330c98ac 37
alindvall 0:b94e330c98ac 38 static void buttonClicked(uint32_t x)
alindvall 0:b94e330c98ac 39 {
alindvall 0:b94e330c98ac 40 bool* done = (bool*)x;
alindvall 0:b94e330c98ac 41 *done = true;
alindvall 0:b94e330c98ac 42 }
alindvall 0:b94e330c98ac 43
alindvall 0:b94e330c98ac 44 void AppImageViewer::draw()
alindvall 0:b94e330c98ac 45 {
alindvall 0:b94e330c98ac 46 // Prepare fullscreen
alindvall 0:b94e330c98ac 47 swim_window_open(_win,
alindvall 0:b94e330c98ac 48 _disp->width(), _disp->height(), // full size
alindvall 0:b94e330c98ac 49 (COLOR_T*)_fb1,
alindvall 0:b94e330c98ac 50 0,0,_disp->width()-1, _disp->height()-1, // window position and size
alindvall 0:b94e330c98ac 51 0, // border
alindvall 0:b94e330c98ac 52 BLACK, BLACK, BLACK); // colors: pen, backgr, forgr
alindvall 0:b94e330c98ac 53
alindvall 0:b94e330c98ac 54 // Create (but don't show) the button
alindvall 0:b94e330c98ac 55 _btn = new ImageButton(_win->fb, _win->xpmax - BTN_OFF - _resOk->width(), _win->ypmax - BTN_OFF - _resOk->height(), _resOk->width(), _resOk->height());
alindvall 0:b94e330c98ac 56 _btn->loadImages(_resOk);
alindvall 0:b94e330c98ac 57 // Copy everything onto the back buffer
alindvall 0:b94e330c98ac 58 memcpy(_fb2, _fb1, _disp->fbSize());
alindvall 0:b94e330c98ac 59 }
alindvall 0:b94e330c98ac 60
alindvall 0:b94e330c98ac 61 void AppImageViewer::load(const char* file)
alindvall 0:b94e330c98ac 62 {
alindvall 0:b94e330c98ac 63 Image::ImageData_t pre = {0};
alindvall 0:b94e330c98ac 64
alindvall 0:b94e330c98ac 65 int res = Image::decode(file, Image::RES_16BIT, &pre);
alindvall 0:b94e330c98ac 66 if (res == 0) {
alindvall 0:b94e330c98ac 67 DMBoard::instance().logger()->printf("[ImageLoader] Preparing %s\n", file);
alindvall 0:b94e330c98ac 68 Image::ImageData_t* data = _mailbox.alloc(osWaitForever);
alindvall 0:b94e330c98ac 69 if (data != NULL) {
alindvall 0:b94e330c98ac 70 *data = pre;
alindvall 0:b94e330c98ac 71 _mailbox.put(data);
alindvall 0:b94e330c98ac 72 } else {
alindvall 0:b94e330c98ac 73 DMBoard::instance().logger()->printf("[ImageLoader] Failed to get memory to prepare %s\n", file);
alindvall 0:b94e330c98ac 74 }
alindvall 0:b94e330c98ac 75 }
alindvall 0:b94e330c98ac 76 }
alindvall 0:b94e330c98ac 77
alindvall 0:b94e330c98ac 78 static bool recursiveProcessFS(char* buff, const char* name, unsigned int maxLen, AppImageViewer* app, int depth, int maxDepth)
alindvall 0:b94e330c98ac 79 {
alindvall 0:b94e330c98ac 80 if (depth > maxDepth) {
alindvall 0:b94e330c98ac 81 return true;
alindvall 0:b94e330c98ac 82 }
alindvall 0:b94e330c98ac 83 uint32_t len = strlen(buff);
alindvall 0:b94e330c98ac 84 if (len > 0) {
alindvall 0:b94e330c98ac 85 if (buff[len - 1] != '/') {
alindvall 0:b94e330c98ac 86 buff[len++] = '/';
alindvall 0:b94e330c98ac 87 buff[len] = '\0';
alindvall 0:b94e330c98ac 88 }
alindvall 0:b94e330c98ac 89 }
alindvall 0:b94e330c98ac 90 if ((strlen(name) + len) >= maxLen) {
alindvall 0:b94e330c98ac 91 // avoid memory overwrite due to too long file path
alindvall 0:b94e330c98ac 92 return true;
alindvall 0:b94e330c98ac 93 }
alindvall 0:b94e330c98ac 94 strcat(buff, name);
alindvall 0:b94e330c98ac 95 len += strlen(name);
alindvall 0:b94e330c98ac 96
alindvall 0:b94e330c98ac 97 DIR *d = opendir(buff);
alindvall 0:b94e330c98ac 98 bool result = true; // success
alindvall 0:b94e330c98ac 99 if (d != NULL) {
alindvall 0:b94e330c98ac 100 struct dirent *p;
alindvall 0:b94e330c98ac 101 while (result && ((p = readdir(d)) != NULL)) {
alindvall 0:b94e330c98ac 102 result = recursiveProcessFS(buff, p->d_name, maxLen, app, depth+1, maxDepth);
alindvall 0:b94e330c98ac 103 buff[len] = '\0';
alindvall 0:b94e330c98ac 104 }
alindvall 0:b94e330c98ac 105 closedir(d);
alindvall 0:b94e330c98ac 106 } else {
alindvall 0:b94e330c98ac 107 // a file
alindvall 0:b94e330c98ac 108 if (len > 3) {
alindvall 0:b94e330c98ac 109 if ((strncasecmp(buff+len-4, ".bmp", 4)==0) ||
alindvall 0:b94e330c98ac 110 (strncasecmp(buff+len-4, ".png", 4)==0) ||
alindvall 0:b94e330c98ac 111 (strncasecmp(buff+len-4, ".raw", 4)==0)) {
alindvall 0:b94e330c98ac 112 DMBoard::instance().logger()->printf("[ImageLoader] found %s\n", buff);
alindvall 0:b94e330c98ac 113 app->load(buff);
alindvall 0:b94e330c98ac 114 }
alindvall 0:b94e330c98ac 115 }
alindvall 0:b94e330c98ac 116 }
alindvall 0:b94e330c98ac 117 return result;
alindvall 0:b94e330c98ac 118 }
alindvall 0:b94e330c98ac 119
alindvall 0:b94e330c98ac 120 static void loaderTask(void const* args)
alindvall 0:b94e330c98ac 121 {
alindvall 0:b94e330c98ac 122 char* buff = (char*)malloc(512);
alindvall 0:b94e330c98ac 123 if (buff != NULL)
alindvall 0:b94e330c98ac 124 {
alindvall 0:b94e330c98ac 125 DMBoard::instance().logger()->printf("Recursive list of file and folders in /mci/\n");
alindvall 0:b94e330c98ac 126 buff[0] = '\0';
alindvall 0:b94e330c98ac 127 recursiveProcessFS(buff, "/mci/", 512, (AppImageViewer*)args, 0, 2);
alindvall 0:b94e330c98ac 128 DMBoard::instance().logger()->printf("Recursive list of file and folders in /usb/\n");
alindvall 0:b94e330c98ac 129 buff[0] = '\0';
alindvall 0:b94e330c98ac 130 recursiveProcessFS(buff, "/usb/", 512, (AppImageViewer*)args, 0, 2);
alindvall 0:b94e330c98ac 131 if (DMBoard::instance().display()->width() == 480) {
alindvall 0:b94e330c98ac 132 DMBoard::instance().logger()->printf("Recursive list of file and folders in /qspi/480x272/\n");
alindvall 0:b94e330c98ac 133 buff[0] = '\0';
alindvall 0:b94e330c98ac 134 recursiveProcessFS(buff, "/qspi/480x272/", 512, (AppImageViewer*)args, 0, 1);
alindvall 0:b94e330c98ac 135 } else {
alindvall 0:b94e330c98ac 136 DMBoard::instance().logger()->printf("Recursive list of file and folders in /qspi/800x480/\n");
alindvall 0:b94e330c98ac 137 buff[0] = '\0';
alindvall 0:b94e330c98ac 138 recursiveProcessFS(buff, "/qspi/800x480/", 512, (AppImageViewer*)args, 0, 1);
alindvall 0:b94e330c98ac 139 }
alindvall 0:b94e330c98ac 140 free(buff);
alindvall 0:b94e330c98ac 141 }
alindvall 0:b94e330c98ac 142 DMBoard::instance().logger()->printf("loaderTask done\n");
alindvall 0:b94e330c98ac 143 }
alindvall 0:b94e330c98ac 144
alindvall 0:b94e330c98ac 145 /******************************************************************************
alindvall 0:b94e330c98ac 146 * Public functions
alindvall 0:b94e330c98ac 147 *****************************************************************************/
alindvall 0:b94e330c98ac 148
alindvall 0:b94e330c98ac 149 AppImageViewer::AppImageViewer() : _disp(NULL), _win(NULL),
alindvall 0:b94e330c98ac 150 _fb1(NULL), _fb2(NULL), _btn(NULL), _active(0), _resOk(NULL)
alindvall 0:b94e330c98ac 151 {
alindvall 0:b94e330c98ac 152 }
alindvall 0:b94e330c98ac 153
alindvall 0:b94e330c98ac 154 AppImageViewer::~AppImageViewer()
alindvall 0:b94e330c98ac 155 {
alindvall 0:b94e330c98ac 156 teardown();
alindvall 0:b94e330c98ac 157 }
alindvall 0:b94e330c98ac 158
alindvall 0:b94e330c98ac 159 bool AppImageViewer::setup()
alindvall 0:b94e330c98ac 160 {
alindvall 0:b94e330c98ac 161 _disp = DMBoard::instance().display();
alindvall 0:b94e330c98ac 162 _win = (SWIM_WINDOW_T*)malloc(sizeof(SWIM_WINDOW_T));
alindvall 0:b94e330c98ac 163 _fb1 = _disp->allocateFramebuffer();
alindvall 0:b94e330c98ac 164 _fb2 = _disp->allocateFramebuffer();
alindvall 0:b94e330c98ac 165
alindvall 0:b94e330c98ac 166 return (_win != NULL && _fb1 != NULL && _fb2 != NULL);
alindvall 0:b94e330c98ac 167 }
alindvall 0:b94e330c98ac 168
alindvall 0:b94e330c98ac 169 void AppImageViewer::runToCompletion()
alindvall 0:b94e330c98ac 170 {
alindvall 0:b94e330c98ac 171 // Alternative 1: use the calling thread's context to run in
alindvall 0:b94e330c98ac 172 bool done = false;
alindvall 0:b94e330c98ac 173 draw();
alindvall 0:b94e330c98ac 174 _btn->setAction(buttonClicked, (uint32_t)&done);
alindvall 0:b94e330c98ac 175 void* oldFB = _disp->swapFramebuffer(_fb1);
alindvall 0:b94e330c98ac 176
alindvall 0:b94e330c98ac 177 _active = 1;
alindvall 0:b94e330c98ac 178
alindvall 0:b94e330c98ac 179 Thread* tLoader = new Thread(loaderTask, this, osPriorityNormal, 8192);
alindvall 0:b94e330c98ac 180
alindvall 0:b94e330c98ac 181 bool first = true;
alindvall 0:b94e330c98ac 182 Timer t;
alindvall 0:b94e330c98ac 183 while(!done) {
alindvall 0:b94e330c98ac 184 osEvent evt = _mailbox.get(1000);
alindvall 0:b94e330c98ac 185 if (evt.status == osEventMail) {
alindvall 0:b94e330c98ac 186 COLOR_T* fb;
alindvall 0:b94e330c98ac 187 if (_active == 1) {
alindvall 0:b94e330c98ac 188 // render on the second frame buffer
alindvall 0:b94e330c98ac 189 fb = (COLOR_T*)_fb2;
alindvall 0:b94e330c98ac 190 } else {
alindvall 0:b94e330c98ac 191 // render on the first frame buffer
alindvall 0:b94e330c98ac 192 fb = (COLOR_T*)_fb1;
alindvall 0:b94e330c98ac 193 }
alindvall 0:b94e330c98ac 194 _win->fb = fb;
alindvall 0:b94e330c98ac 195 Image::ImageData_t* data = (Image::ImageData_t*)evt.value.p;
alindvall 4:a7cbb22e4348 196 if ((data->width < _disp->width()) || (data->height < _disp->height())) {
alindvall 4:a7cbb22e4348 197 // Clear background as the image is not full screen
alindvall 4:a7cbb22e4348 198 memset(fb, 0, _disp->fbSize());
alindvall 4:a7cbb22e4348 199 }
alindvall 0:b94e330c98ac 200 swim_put_image_xy(_win, (COLOR_T*)data->pixels, data->width, data->height, (_disp->width()-data->width)/2, (_disp->height()-data->height)/2);
alindvall 0:b94e330c98ac 201 free(data->pointerToFree);
alindvall 0:b94e330c98ac 202 _mailbox.free(data);
alindvall 0:b94e330c98ac 203 if (first) {
alindvall 0:b94e330c98ac 204 first = false;
alindvall 0:b94e330c98ac 205 t.start();
alindvall 0:b94e330c98ac 206 } else {
alindvall 0:b94e330c98ac 207 while (t.read_ms() < 2000) {
alindvall 0:b94e330c98ac 208 Thread::wait(100);
alindvall 0:b94e330c98ac 209 }
alindvall 0:b94e330c98ac 210 }
alindvall 0:b94e330c98ac 211 _disp->setFramebuffer(fb);
alindvall 0:b94e330c98ac 212 _active = (_active == 1 ? 2 : 1);
alindvall 0:b94e330c98ac 213 t.reset();
alindvall 0:b94e330c98ac 214 } else if (tLoader->get_state() == Thread::Inactive) {
alindvall 0:b94e330c98ac 215 // No more images in the queue and the loader thread
alindvall 0:b94e330c98ac 216 // has completed its search
alindvall 0:b94e330c98ac 217 break;
alindvall 0:b94e330c98ac 218 }
alindvall 0:b94e330c98ac 219 }
alindvall 0:b94e330c98ac 220
alindvall 0:b94e330c98ac 221 delete tLoader;
alindvall 0:b94e330c98ac 222
alindvall 0:b94e330c98ac 223 // The button must be drawn on the current framebuffer
alindvall 0:b94e330c98ac 224 _btn->draw(_win->fb);
alindvall 0:b94e330c98ac 225
alindvall 0:b94e330c98ac 226 // Wait for touches, but the AppLauncher is already listening
alindvall 0:b94e330c98ac 227 // for new touch event and sends a signal to its thread which
alindvall 0:b94e330c98ac 228 // is the same as runs this function so it is enough to wait
alindvall 0:b94e330c98ac 229 // for that signal.
alindvall 0:b94e330c98ac 230 TouchPanel* touch = DMBoard::instance().touchPanel();
alindvall 0:b94e330c98ac 231 touch_coordinate_t coord;
alindvall 0:b94e330c98ac 232 while(!done) {
alindvall 0:b94e330c98ac 233 Thread::signal_wait(0x1);
alindvall 0:b94e330c98ac 234 if (touch->read(coord) == TouchPanel::TouchError_Ok) {
alindvall 0:b94e330c98ac 235 if (_btn->handle(coord.x, coord.y, coord.z > 0)) {
alindvall 0:b94e330c98ac 236 _btn->draw();
alindvall 0:b94e330c98ac 237 }
alindvall 0:b94e330c98ac 238 }
alindvall 0:b94e330c98ac 239 }
alindvall 0:b94e330c98ac 240
alindvall 0:b94e330c98ac 241 // User has clicked the button, restore the original FB
alindvall 0:b94e330c98ac 242 _disp->swapFramebuffer(oldFB);
alindvall 0:b94e330c98ac 243 swim_window_close(_win);
alindvall 0:b94e330c98ac 244 }
alindvall 0:b94e330c98ac 245
alindvall 0:b94e330c98ac 246 bool AppImageViewer::teardown()
alindvall 0:b94e330c98ac 247 {
alindvall 0:b94e330c98ac 248 if (_win != NULL) {
alindvall 0:b94e330c98ac 249 free(_win);
alindvall 0:b94e330c98ac 250 _win = NULL;
alindvall 0:b94e330c98ac 251 }
alindvall 0:b94e330c98ac 252 if (_fb1 != NULL) {
alindvall 0:b94e330c98ac 253 free(_fb1);
alindvall 0:b94e330c98ac 254 _fb1 = NULL;
alindvall 0:b94e330c98ac 255 }
alindvall 0:b94e330c98ac 256 if (_fb2 != NULL) {
alindvall 0:b94e330c98ac 257 free(_fb2);
alindvall 0:b94e330c98ac 258 _fb2 = NULL;
alindvall 0:b94e330c98ac 259 }
alindvall 0:b94e330c98ac 260 if (_btn != NULL) {
alindvall 0:b94e330c98ac 261 delete _btn;
alindvall 0:b94e330c98ac 262 _btn = NULL;
alindvall 0:b94e330c98ac 263 }
alindvall 0:b94e330c98ac 264 return true;
alindvall 0:b94e330c98ac 265 }
alindvall 0:b94e330c98ac 266
alindvall 0:b94e330c98ac 267 void AppImageViewer::addResource(Resources id, Resource* res)
alindvall 0:b94e330c98ac 268 {
alindvall 0:b94e330c98ac 269 _resOk = res;
alindvall 0:b94e330c98ac 270 }