2 Copyright 2004-2005 Chris Tallon
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4 This file is part of VOMP.
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6 VOMP is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2 of the License, or
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9 (at your option) any later version.
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11 VOMP is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with VOMP; if not, write to the Free Software
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18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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21 #include "boxstack.h"
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23 #include "command.h"
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27 BoxStack* BoxStack::instance = NULL;
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29 BoxStack::BoxStack()
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31 if (instance) return;
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37 BoxStack::~BoxStack()
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42 BoxStack* BoxStack::getInstance()
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47 int BoxStack::init()
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49 if (initted) return 0;
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53 pthread_mutex_init(&boxLock, NULL);
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55 boxLock = CreateMutex(NULL,FALSE,NULL);
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61 int BoxStack::shutdown()
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63 if (!initted) return 0;
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65 // FIXME don't think this can work properly, removeAll leaves the wallpaper there!
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72 int BoxStack::add(Boxx* v)
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74 if (!initted) return 0;
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75 Log::getInstance()->log("BoxStack", Log::DEBUG, "add called");
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77 pthread_mutex_lock(&boxLock);
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79 WaitForSingleObject(boxLock, INFINITE);
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81 Log::getInstance()->log("BoxStack", Log::DEBUG, "Locked for add");
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85 Log::getInstance()->log("BoxStack", Log::ERR, "More than 16 boxes! Unlocked for add");
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87 pthread_mutex_unlock(&boxLock);
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89 ReleaseMutex(boxLock);
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93 boxes[numBoxes++] = v;
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96 pthread_mutex_unlock(&boxLock);
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98 ReleaseMutex(boxLock);
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101 Log::getInstance()->log("BoxStack", Log::DEBUG, "Unlocked for add");
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106 // ---------------------------------------------------- REMOVE CODE
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108 int BoxStack::remove(Boxx* toDelete)
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110 if (!initted) return 0;
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113 pthread_mutex_lock(&boxLock);
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115 WaitForSingleObject(boxLock, INFINITE);
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117 Log::getInstance()->log("BoxStack", Log::DEBUG, "Locked for remove");
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122 pthread_mutex_unlock(&boxLock);
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124 ReleaseMutex(boxLock);
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126 Log::getInstance()->log("BoxStack", Log::ERR, "Unlocked for remove numBoxes == 0");
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130 // Log::getInstance()->log("BoxStack", Log::DEBUG, "entering remove, numBoxes=%i", numBoxes);
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134 if (toDelete == NULL)
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136 toDelete = boxes[numBoxes-1];
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141 // to be deleted box is more likely to be at the top
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142 for (i = numBoxes-1; i >= 0; i--)
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144 // Log::getInstance()->log("BoxStack", Log::DEBUG, "todel: %p, i=%i, boxes[i]=%p", toDelete, i, boxes[i]);
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145 if (boxes[i] == toDelete) break;
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150 // not a Box we have!
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153 pthread_mutex_unlock(&boxLock);
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155 ReleaseMutex(boxLock);
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157 Log::getInstance()->log("BoxStack", Log::ERR, "Unlocked for remove - no boxx deleted");
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163 pthread_mutex_unlock(&boxLock);
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165 ReleaseMutex(boxLock);
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168 toDelete->preDelete();
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171 pthread_mutex_lock(&boxLock);
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173 WaitForSingleObject(boxLock, INFINITE);
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176 // Log::getInstance()->log("BoxStack", Log::DEBUG, "Starting deleteBox");
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178 // Log::getInstance()->log("BoxStack", Log::DEBUG, "Done deleteBox");
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180 // Shift the boxes on top down one
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182 for(int j = i; j < numBoxes; j++) boxes[j] = boxes[j+1];
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184 // If there is only the wallpaper left signal command
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187 Message* m = new Message();
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188 m->to = Command::getInstance();
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189 m->message = Message::LAST_VIEW_CLOSE;
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190 Command::getInstance()->postMessageNoLock(m);
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194 pthread_mutex_unlock(&boxLock);
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196 ReleaseMutex(boxLock);
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198 Log::getInstance()->log("BoxStack", Log::DEBUG, "Unlocked for remove");
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201 //AVO: do this delete outside the lock to allow for recursive calls within the destructor
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202 // as this box is not in the stack any more, there is no chance for a second delete
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203 Log::getInstance()->log("BoxStack", Log::DEBUG, "remove: going to delete boxx %p, num %d", toDelete, numBoxes);
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209 /////////////////////////////////////////////////////////////////////////////
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211 /////////////////////////////////////////////////////////////////////////////
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213 void BoxStack::deleteBox(int z)
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215 // Log::getInstance()->log("BoxStack", Log::DEBUG, "Delete box %i of %i", z, numBoxes);
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217 boxSplit(boxes[z]->area, z + 1, numBoxes, 1, rl);
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220 repaintRevealed(z, rl.front());
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225 void BoxStack::redrawAllBoxes()
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228 pthread_mutex_lock(&boxLock);
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230 WaitForSingleObject(boxLock, INFINITE);
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233 for (int z = 0; z < numBoxes; z++)
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240 pthread_mutex_unlock(&boxLock);
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242 ReleaseMutex(boxLock);
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244 update(NULL,NULL); // should blt all
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247 void BoxStack::update(Boxx* toUpdate, Region* regionToUpdate)
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249 Log::getInstance()->log("BoxStack", Log::DEBUG, "Update called");
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250 if (!initted) return; // it is allowed to call this before init
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252 pthread_mutex_lock(&boxLock);
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254 WaitForSingleObject(boxLock, INFINITE);
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256 Log::getInstance()->log("BoxStack", Log::DEBUG, "Locked for update");
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258 // Get the z index of the box
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262 for (z = 0; z < numBoxes; z++)
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264 if (boxes[z] == toUpdate) break;
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269 // not a Box we have!
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271 pthread_mutex_unlock(&boxLock);
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273 ReleaseMutex(boxLock);
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275 Log::getInstance()->log("BoxStack", Log::ERR, "Unlocked for update! box not inside boxstack");
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281 toUpdate = boxes[0];
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284 // get the region for the whole box, could be less than that
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285 // for smaller updates
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287 Region r = toUpdate->area;
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289 if (regionToUpdate)
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291 // Can be null if the whole box should be updated
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292 // If this is given the numbers are relative to the size of the box, not the screen
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294 r.x += regionToUpdate->x;
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295 r.y += regionToUpdate->y;
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296 r.w = regionToUpdate->w;
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297 r.h = regionToUpdate->h;
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303 boxSplit(r, z+1, numBoxes, 1, rl);
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313 pthread_mutex_unlock(&boxLock);
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315 ReleaseMutex(boxLock);
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317 Log::getInstance()->log("BoxStack", Log::DEBUG, "Unlocked for update");
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320 void BoxStack::repaintRevealed(int x, Region r)
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323 boxSplit(r, x - 1, -1, -1, rl);
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329 boxes[r2.z]->blt(r2);
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334 void BoxStack::boxSplit(Region r, int start, int end, int direction, RegionList& rl)
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336 // printf("Y= S=%i E=%i D=%i: Boxsplit: %i %i %i %i\n", start, end, direction, r.x, r.y, r.w, r.h);
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338 for(int z = start; z != end; z += direction)
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340 if (r.overlappedBy(boxes[z]->area))
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342 // printf("Z=%i S=%i E=%i D=%i: %i overlaps\n", z, start, end, direction, z);
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347 if (boxes[z]->area.y > r.y)
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349 // printf("Z=%i S=%i E=%i D=%i: Case 1 for %i %i %i %i split by %i: %i %i %i %i\n", z, start, end, direction, r.x, r.y, r.w, r.h, z, boxes[z]->area.x, boxes[z]->area.y, boxes[z]->area.w, boxes[z]->area.h);
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350 top = boxes[z]->area.y;
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355 newR.h = boxes[z]->area.y - r.y;
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356 boxSplit(newR, z + direction, end, direction, rl);
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358 if (direction == -1)
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362 newR2.y = boxes[z]->area.y;
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364 newR2.h = r.h - newR.h;
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365 boxSplit(newR2, z, end, -1, rl);
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370 if (boxes[z]->area.y2() < r.y2())
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372 // printf("Z=%i S=%i E=%i D=%i: Case 2 for %i %i %i %i split by %i: %i %i %i %i\n", z, start, end, direction, r.x, r.y, r.w, r.h, z, boxes[z]->area.x, boxes[z]->area.y, boxes[z]->area.w, boxes[z]->area.h);
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373 btm = boxes[z]->area.y2();
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376 newR.y = boxes[z]->area.y2() + 1;
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378 newR.h = r.y2() - newR.y + 1;
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379 boxSplit(newR, z + direction, end, direction, rl);
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381 if (direction == -1)
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387 newR2.h = r.h - newR.h;
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388 boxSplit(newR2, z, end, -1, rl);
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393 if (boxes[z]->area.x > r.x)
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395 // printf("Z=%i S=%i E=%i D=%i: Case 3 for %i %i %i %i split by %i: %i %i %i %i\n", z, start, end, direction, r.x, r.y, r.w, r.h, z, boxes[z]->area.x, boxes[z]->area.y, boxes[z]->area.w, boxes[z]->area.h);
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399 newR.w = boxes[z]->area.x - r.x;
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400 newR.h = btm - top + 1;
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401 boxSplit(newR, z + direction, end, direction, rl);
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403 if (direction == -1)
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406 newR2.x = r.x + newR.w;
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408 newR2.w = r.w - newR.w;
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410 boxSplit(newR2, z, end, -1, rl);
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415 if (boxes[z]->area.x2() < r.x2())
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417 // printf("Z=%i S=%i E=%i D=%i: Case 4 for %i %i %i %i split by %i: %i %i %i %i\n", z, start, end, direction, r.x, r.y, r.w, r.h, z, boxes[z]->area.x, boxes[z]->area.y, boxes[z]->area.w, boxes[z]->area.h);
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419 newR.x = boxes[z]->area.x2() + 1;
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421 newR.w = r.x2() - newR.x + 1;
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422 newR.h = btm - top + 1;
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423 boxSplit(newR, z + direction, end, direction, rl);
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425 if (direction == -1)
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430 newR2.w = r.w - newR.w;
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432 boxSplit(newR2, z, end, -1, rl);
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437 if (direction == -1)
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439 // we are going down the stack
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440 // r is underlapped by boxes[z]
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441 // but we have not split
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442 // Therefore this region under test is
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443 // completely covering boxes[z]
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445 // don't go any further down, generate a region and quit
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447 // printf("Repaint region: %i %i %i %i\n", r.x, r.y, r.w, r.h);
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452 // printf("Returning from Z=%i\n", z);
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457 // printf("Z=%i S=%i E=%i D=%i: %i does not overlap\n", z, start, end, direction, z);
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461 // if direction = 1 then we have come to a region that is
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462 // entirely clear of higher boxes and needs to be redrawn
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464 // if direction = -1 then we have come to a region that is on
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465 // the very bottom with nothing below it to repaint.
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466 // do nothing. stale window data will be left on screen?
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468 if (direction == 1)
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474 /////////////////////////////////////////////////////////////////////////////
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476 /////////////////////////////////////////////////////////////////////////////
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478 // ---------------------------------------------------- END OF REMOVE CODE
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481 void BoxStack::removeAll()
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483 // 1.. Don't delete wallpaper. No point.
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485 // Need locking on this one??
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487 // This is pretty silly now that preDelete needs mutex unlocked
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489 Boxx* toDel = NULL;
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491 while(numBoxes > 1)
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494 pthread_mutex_lock(&boxLock);
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496 WaitForSingleObject(boxLock, INFINITE);
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502 pthread_mutex_unlock(&boxLock);
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504 ReleaseMutex(boxLock);
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509 toDel = boxes[numBoxes - 1];
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512 pthread_mutex_unlock(&boxLock);
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514 ReleaseMutex(boxLock);
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517 toDel->preDelete();
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520 pthread_mutex_lock(&boxLock);
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522 WaitForSingleObject(boxLock, INFINITE);
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525 // If boxes[numBoxes - 1] isn't toDel then there's a problem
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526 if (boxes[numBoxes - 1] == toDel)
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532 Log::getInstance()->log("BoxStack", Log::ERR, "Can this actually happen? Why?");
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537 pthread_mutex_unlock(&boxLock);
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539 ReleaseMutex(boxLock);
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542 //AVO: do the delete outside the lock to allow for recursive deletes
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543 Log::getInstance()->log("BoxStack", Log::DEBUG, "going to delete boxx %p, num=%d", toDel, numBoxes);
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544 if (toDel) delete toDel;
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548 int BoxStack::handleCommand(int command)
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554 if (command != Remote::NA_NONE)
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556 // handle command return values
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557 // 0 - drop through to next box
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558 // 1 - dont drop to next box, but not handled
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559 // 2 - handled - stop command here
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560 // 4 - handled - delete this box
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562 for (i=numBoxes-1; i>=0; i--)
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564 // Log::getInstance()->log("BoxStack", Log::DEBUG, "Giving command to i=%i", i);
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565 retVal = boxes[i]->handleCommand(command);
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568 // not handled but don't give to any more boxes
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578 else if (retVal == 4)
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580 // Log::getInstance()->log("BoxStack", Log::DEBUG, "Return 4: i=%i, boxes[i]=%p", i, boxes[i]);
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589 // fake the return code
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596 void BoxStack::processMessage(Message* m)
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600 for (int i = numBoxes-1; i >= 0; i--)
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602 if (boxes[i] == m->to)
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604 Log::getInstance()->log("BoxStack", Log::DEBUG, "sending message from box %p to box %p %lu", m->from, m->to, m->message);
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605 boxes[i]->processMessage(m);
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612 /* Handle mouse events*/
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613 // They come in with m->to = NULL? and just need to be delivered to top box?
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614 if ((numBoxes > 1) && ((m->message == Message::MOUSE_MOVE) || (m->message == Message::MOUSE_LBDOWN)
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615 || (m->message == Message::MOUSE_ANDROID_SCROLL)))
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617 boxes[numBoxes-1]->processMessage(m);
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621 Log::getInstance()->log("BoxStack", Log::DEBUG, "it's for meeee!");
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625 case Message::CLOSE_ME:
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627 remove((Boxx*)m->from);
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630 case Message::ADD_VIEW: // currently not used by anything but it might come in useful again
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632 Boxx* toAdd = (Boxx*)m->parameter;
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