Sample GUI for LPC4088. Base code to begin dev
Dependencies: DMBasicGUI DMSupport
Fork of lpc4088_displaymodule_shipped_demo by
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?
User | Revision | Line number | New 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 | } |