aboutsummaryrefslogtreecommitdiff
path: root/gui/gui-manager.cpp
blob: abd781e1a38a843a0b2e30dc7503118c0ad5b766 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "common/events.h"
#include "common/system.h"
#include "common/util.h"
#include "common/config-manager.h"
#include "common/algorithm.h"
#include "common/rect.h"
#include "common/textconsole.h"
#include "common/translation.h"

#include "backends/keymapper/keymapper.h"

#include "gui/gui-manager.h"
#include "gui/dialog.h"
#include "gui/ThemeEngine.h"
#include "gui/ThemeEval.h"
#include "gui/Tooltip.h"
#include "gui/widget.h"

#include "graphics/cursorman.h"

namespace Common {
DECLARE_SINGLETON(GUI::GuiManager);
}

namespace GUI {

enum {
	kDoubleClickDelay = 500, // milliseconds
	kCursorAnimateDelay = 250,
	kTooltipDelay = 1250
};

// Constructor
GuiManager::GuiManager() : _redrawStatus(kRedrawDisabled), _stateIsSaved(false),
    _cursorAnimateCounter(0), _cursorAnimateTimer(0) {
	_theme = 0;
	_useStdCursor = false;

	_system = g_system;
	_lastScreenChangeID = _system->getScreenChangeID();
	_width = _system->getOverlayWidth();
	_height = _system->getOverlayHeight();

	// Clear the cursor
	memset(_cursor, 0xFF, sizeof(_cursor));

#ifdef USE_TRANSLATION
	// Enable translation
	TransMan.setLanguage(ConfMan.get("gui_language").c_str());
#endif // USE_TRANSLATION

	ConfMan.registerDefault("gui_theme", "scummmodern");
	Common::String themefile(ConfMan.get("gui_theme"));

	ConfMan.registerDefault("gui_renderer", ThemeEngine::findModeConfigName(ThemeEngine::_defaultRendererMode));
	ThemeEngine::GraphicsMode gfxMode = (ThemeEngine::GraphicsMode)ThemeEngine::findMode(ConfMan.get("gui_renderer"));

#ifdef __DS__
	// Searching for the theme file takes ~10 seconds on the DS.
	// Disable this search here because external themes are not supported.
	if (!loadNewTheme("builtin", gfxMode)) {
		// Loading the built-in theme failed as well. Bail out
		error("Failed to load any GUI theme, aborting");
	}
#else
	// Try to load the theme
	if (!loadNewTheme(themefile, gfxMode)) {
		// Loading the theme failed, try to load the built-in theme
		if (!loadNewTheme("builtin", gfxMode)) {
			// Loading the built-in theme failed as well. Bail out
			error("Failed to load any GUI theme, aborting");
		}
	}
#endif
}

GuiManager::~GuiManager() {
	delete _theme;
}

#ifdef ENABLE_KEYMAPPER
void GuiManager::initKeymap() {
	using namespace Common;

	Keymapper *mapper = _system->getEventManager()->getKeymapper();

	// Do not try to recreate same keymap over again
	if (mapper->getKeymap(kGuiKeymapName) != 0)
		return;

	Action *act;
	Keymap *guiMap = new Keymap(kGuiKeymapName);

	act = new Action(guiMap, "CLOS", _("Close"));
	act->addKeyEvent(KeyState(KEYCODE_ESCAPE, ASCII_ESCAPE, 0));

	act = new Action(guiMap, "CLIK", _("Mouse click"));
	act->addLeftClickEvent();

#ifdef ENABLE_VKEYBD
	act = new Action(guiMap, "VIRT", _("Display keyboard"));
	act->addEvent(EVENT_VIRTUAL_KEYBOARD);
#endif

	act = new Action(guiMap, "REMP", _("Remap keys"));
	act->addEvent(EVENT_KEYMAPPER_REMAP);

	act = new Action(guiMap, "FULS", _("Toggle FullScreen"));
	act->addKeyEvent(KeyState(KEYCODE_RETURN, ASCII_RETURN, KBD_ALT));

	mapper->addGlobalKeymap(guiMap);
}

void GuiManager::pushKeymap() {
	_system->getEventManager()->getKeymapper()->pushKeymap(Common::kGuiKeymapName);
}

void GuiManager::popKeymap() {
	_system->getEventManager()->getKeymapper()->popKeymap(Common::kGuiKeymapName);
}
#endif

bool GuiManager::loadNewTheme(Common::String id, ThemeEngine::GraphicsMode gfx, bool forced) {
	// If we are asked to reload the currently active theme, just do nothing
	// FIXME: Actually, why? It might be desirable at times to force a theme reload...
	if (!forced)
		if (_theme && id == _theme->getThemeId() && gfx == _theme->getGraphicsMode())
			return true;

	ThemeEngine *newTheme = 0;

	if (gfx == ThemeEngine::kGfxDisabled)
		gfx = ThemeEngine::_defaultRendererMode;

	// Try to load the new theme
	newTheme = new ThemeEngine(id, gfx);
	assert(newTheme);

	if (!newTheme->init())
		return false;

	//
	// Disable and delete the old theme
	//
	if (_theme)
		_theme->disable();
	delete _theme;

	if (_useStdCursor) {
		CursorMan.popCursorPalette();
		CursorMan.popCursor();
	}

	//
	// Enable the new theme
	//
	_theme = newTheme;
	_useStdCursor = !_theme->ownCursor();

	// If _stateIsSaved is set, we know that a Theme is already initialized,
	// thus we initialize the new theme properly
	if (_stateIsSaved) {
		_theme->enable();

		if (_useStdCursor)
			setupCursor();
	}

	// refresh all dialogs
	for (DialogStack::size_type i = 0; i < _dialogStack.size(); ++i)
		_dialogStack[i]->reflowLayout();

	// We need to redraw immediately. Otherwise
	// some other event may cause a widget to be
	// redrawn before redraw() has been called.
	_redrawStatus = kRedrawFull;
	redraw();
	_system->updateScreen();

	return true;
}

void GuiManager::redraw() {
	ThemeEngine::ShadingStyle shading;

	if (_redrawStatus == kRedrawDisabled || _dialogStack.empty())
		return;

	shading = (ThemeEngine::ShadingStyle)xmlEval()->getVar("Dialog." + _dialogStack.top()->_name + ".Shading", 0);

	// Tanoku: Do not apply shading more than once when opening many dialogs
	// on top of each other. Screen ends up being too dark and it's a
	// performance hog.
	if (_redrawStatus == kRedrawOpenDialog && _dialogStack.size() > 2)
		shading = ThemeEngine::kShadingNone;

	switch (_redrawStatus) {
		case kRedrawCloseDialog:
		case kRedrawFull:
		case kRedrawTopDialog:
			_theme->clearAll();
			_theme->openDialog(true, ThemeEngine::kShadingNone);

			for (DialogStack::size_type i = 0; i < _dialogStack.size() - 1; i++)
				_dialogStack[i]->drawDialog();

			_theme->finishBuffering();

			// fall through

		case kRedrawOpenDialog:
			_theme->updateScreen(false);
			_theme->openDialog(true, shading);
			_dialogStack.top()->drawDialog();
			_theme->finishBuffering();
			break;

		default:
			return;
	}

	_theme->updateScreen();
	_redrawStatus = kRedrawDisabled;
}

Dialog *GuiManager::getTopDialog() const {
	if (_dialogStack.empty())
		return 0;
	return _dialogStack.top();
}

void GuiManager::runLoop() {
	Dialog * const activeDialog = getTopDialog();
	bool didSaveState = false;
	int button;
	uint32 time;

	if (activeDialog == 0)
		return;

	if (!_stateIsSaved) {
		saveState();
		_theme->enable();
		didSaveState = true;

		_useStdCursor = !_theme->ownCursor();
		if (_useStdCursor)
			setupCursor();

//		_theme->refresh();

		_redrawStatus = kRedrawFull;
		redraw();
	}

	_lastMousePosition.x = _lastMousePosition.y = -1;
	_lastMousePosition.time = 0;

	Common::EventManager *eventMan = _system->getEventManager();
	uint32 lastRedraw = 0;
	const uint32 waitTime = 1000 / 45;

	bool tooltipCheck = false;

	while (!_dialogStack.empty() && activeDialog == getTopDialog() && !eventMan->shouldQuit()) {
		redraw();

		// Don't "tickle" the dialog until the theme has had a chance
		// to re-allocate buffers in case of a scaler change.

		activeDialog->handleTickle();

		if (_useStdCursor)
			animateCursor();
//		_theme->updateScreen();
//		_system->updateScreen();

		if (lastRedraw + waitTime < _system->getMillis()) {
			_theme->updateScreen();
			_system->updateScreen();
			lastRedraw = _system->getMillis();
		}

		Common::Event event;

		while (eventMan->pollEvent(event)) {
			// The top dialog can change during the event loop. In that case, flush all the
			// dialog-related events since they were probably generated while the old dialog
			// was still visible, and therefore not intended for the new one.
			//
			// This hopefully fixes strange behavior/crashes with pop-up widgets. (Most easily
			// triggered in 3x mode or when running ScummVM under Valgrind.)
			if (activeDialog != getTopDialog() && event.type != Common::EVENT_SCREEN_CHANGED)
				continue;

			Common::Point mouse(event.mouse.x - activeDialog->_x, event.mouse.y - activeDialog->_y);

			switch (event.type) {
			case Common::EVENT_KEYDOWN:
				activeDialog->handleKeyDown(event.kbd);
				break;
			case Common::EVENT_KEYUP:
				activeDialog->handleKeyUp(event.kbd);
				break;
			case Common::EVENT_MOUSEMOVE:
				activeDialog->handleMouseMoved(mouse.x, mouse.y, 0);

				if (mouse.x != _lastMousePosition.x || mouse.y != _lastMousePosition.y) {
					_lastMousePosition.x = mouse.x;
					_lastMousePosition.y = mouse.y;
					_lastMousePosition.time = _system->getMillis();
				}

				tooltipCheck = true;
				break;
			// We don't distinguish between mousebuttons (for now at least)
			case Common::EVENT_LBUTTONDOWN:
			case Common::EVENT_RBUTTONDOWN:
				button = (event.type == Common::EVENT_LBUTTONDOWN ? 1 : 2);
				time = _system->getMillis();
				if (_lastClick.count && (time < _lastClick.time + kDoubleClickDelay)
							&& ABS(_lastClick.x - event.mouse.x) < 3
							&& ABS(_lastClick.y - event.mouse.y) < 3) {
					_lastClick.count++;
				} else {
					_lastClick.x = event.mouse.x;
					_lastClick.y = event.mouse.y;
					_lastClick.count = 1;
				}
				_lastClick.time = time;
				activeDialog->handleMouseDown(mouse.x, mouse.y, button, _lastClick.count);
				break;
			case Common::EVENT_LBUTTONUP:
			case Common::EVENT_RBUTTONUP:
				button = (event.type == Common::EVENT_LBUTTONUP ? 1 : 2);
				activeDialog->handleMouseUp(mouse.x, mouse.y, button, _lastClick.count);
				break;
			case Common::EVENT_WHEELUP:
				activeDialog->handleMouseWheel(mouse.x, mouse.y, -1);
				break;
			case Common::EVENT_WHEELDOWN:
				activeDialog->handleMouseWheel(mouse.x, mouse.y, 1);
				break;
			case Common::EVENT_SCREEN_CHANGED:
				screenChange();
				break;
			default:
#ifdef ENABLE_KEYMAPPER
				activeDialog->handleOtherEvent(event);
#endif
				break;
			}

			if (lastRedraw + waitTime < _system->getMillis()) {
				_theme->updateScreen();
				_system->updateScreen();
				lastRedraw = _system->getMillis();
			}
		}

		if (tooltipCheck && _lastMousePosition.time + kTooltipDelay < _system->getMillis()) {
			Widget *wdg = activeDialog->findWidget(_lastMousePosition.x, _lastMousePosition.y);
			if (wdg && wdg->getTooltip() && !(wdg->getFlags() & WIDGET_PRESSED)) {
				Tooltip *tooltip = new Tooltip();
				tooltip->setup(activeDialog, wdg, _lastMousePosition.x, _lastMousePosition.y);
				tooltip->runModal();
				delete tooltip;
			}
		}

		// Delay for a moment
		_system->delayMillis(10);
	}

	// WORKAROUND: When quitting we might not properly close the dialogs on
	// the dialog stack, thus we do this here to avoid any problems.
	// This is most noticable in bug #3481395 "LAUNCHER: Can't quit from unsupported game dialog".
	// It seems that Dialog::runModal never removes the dialog from the dialog
	// stack, thus if the dialog does not call Dialog::close to close itself
	// it will never be removed. Since we can have multiple run loops being
	// called we cannot rely on catching EVENT_QUIT in the event loop above,
	// since it would only catch it for the top run loop.
	if (eventMan->shouldQuit() && activeDialog == getTopDialog())
		getTopDialog()->close();

	if (didSaveState) {
		_theme->disable();
		restoreState();
		_useStdCursor = false;
	}
}

#pragma mark -

void GuiManager::saveState() {
#ifdef ENABLE_KEYMAPPER
	initKeymap();
	pushKeymap();
#endif
	// Backup old cursor
	_lastClick.x = _lastClick.y = 0;
	_lastClick.time = 0;
	_lastClick.count = 0;

	_stateIsSaved = true;
}

void GuiManager::restoreState() {
#ifdef ENABLE_KEYMAPPER
	popKeymap();
#endif
	if (_useStdCursor) {
		CursorMan.popCursor();
		CursorMan.popCursorPalette();
	}

	_system->updateScreen();

	_stateIsSaved = false;
}

void GuiManager::openDialog(Dialog *dialog) {
	dialog->receivedFocus();

	if (!_dialogStack.empty())
		getTopDialog()->lostFocus();

	_dialogStack.push(dialog);
	if (_redrawStatus != kRedrawFull)
		_redrawStatus = kRedrawOpenDialog;

	// We reflow the dialog just before opening it. If the screen changed
	// since the last time we looked, also refresh the loaded theme,
	// and reflow all other open dialogs, too.
	if (!checkScreenChange())
		dialog->reflowLayout();
}

void GuiManager::closeTopDialog() {
	// Don't do anything if no dialog is open
	if (_dialogStack.empty())
		return;

	// Remove the dialog from the stack
	_dialogStack.pop()->lostFocus();

	if (!_dialogStack.empty())
		getTopDialog()->receivedFocus();

	if (_redrawStatus != kRedrawFull)
		_redrawStatus = kRedrawCloseDialog;

	redraw();
}

void GuiManager::setupCursor() {
	const byte palette[] = {
		255, 255, 255,
		255, 255, 255,
		171, 171, 171,
		 87,  87,  87
	};

	CursorMan.pushCursorPalette(palette, 0, 4);
	CursorMan.pushCursor(NULL, 0, 0, 0, 0, 0);
	CursorMan.showMouse(true);
}

// Draw the mouse cursor (animated). This is pretty much the same as in old
// SCUMM games, but the code no longer resembles what we have in cursor.cpp
// very much. We could plug in a different cursor here if we like to.

void GuiManager::animateCursor() {
	int time = _system->getMillis();
	if (time > _cursorAnimateTimer + kCursorAnimateDelay) {
		for (int i = 0; i < 15; i++) {
			if ((i < 6) || (i > 8)) {
				_cursor[16 * 7 + i] = _cursorAnimateCounter;
				_cursor[16 * i + 7] = _cursorAnimateCounter;
			}
		}

		CursorMan.replaceCursor(_cursor, 16, 16, 7, 7, 255);

		_cursorAnimateTimer = time;
		_cursorAnimateCounter = (_cursorAnimateCounter + 1) % 4;
	}
}

bool GuiManager::checkScreenChange() {
	int tmpScreenChangeID = _system->getScreenChangeID();
	if (_lastScreenChangeID != tmpScreenChangeID) {
		screenChange();
		return true;
	}
	return false;
}

void GuiManager::screenChange() {
	_lastScreenChangeID = _system->getScreenChangeID();
	_width = _system->getOverlayWidth();
	_height = _system->getOverlayHeight();

	// reinit the whole theme
	_theme->refresh();

	// refresh all dialogs
	for (DialogStack::size_type i = 0; i < _dialogStack.size(); ++i) {
		_dialogStack[i]->reflowLayout();
	}
	// We need to redraw immediately. Otherwise
	// some other event may cause a widget to be
	// redrawn before redraw() has been called.
	_redrawStatus = kRedrawFull;
	redraw();
	_system->updateScreen();
}

} // End of namespace GUI