summaryrefslogtreecommitdiff
path: root/src/gui/gui.h
blob: bbeced8d2425d98c188c0774ca107e5b1de56f43 (plain) (blame)
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
541
542
543
544
545
/*
 *  The ManaPlus Client
 *  Copyright (C) 2004-2009  The Mana World Development Team
 *  Copyright (C) 2009-2010  The Mana Developers
 *  Copyright (C) 2011-2016  The ManaPlus Developers
 *
 *  This file is part of The ManaPlus Client.
 *
 *  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
 *  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, see <http://www.gnu.org/licenses/>.
 */

/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
 *
 *
 * Per Larsson a.k.a finalman
 * Olof Naessén a.k.a jansem/yakslem
 *
 * Visit: http://guichan.sourceforge.net
 *
 * License: (BSD)
 * 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 of Guichan nor the names of its contributors may
 *    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.
 */

#ifndef GUI_GUI_H
#define GUI_GUI_H

#include "gui/color.h"

#include "enums/events/mousebutton.h"
#include "enums/events/mouseeventtype.h"

#include "resources/cursor.h"

#include <deque>
#include <list>

#include "localconsts.h"

class Event;
class FocusHandler;
class FocusListener;
class Graphics;
class GuiConfigListener;
class ImageSet;
class KeyEvent;
class KeyListener;
class MouseEvent;
class MouseInput;
class Font;
class SDLInput;
class Widget;
class Window;

#ifdef USE_SDL2
#define MouseStateType uint32_t
#else
#define MouseStateType uint8_t
#endif

/**
 * \defgroup GUI Core GUI related classes (widgets)
 */

/**
 * \defgroup Interface User interface related classes (windows, dialogs)
 */

/**
 * Main GUI class.
 *
 * \ingroup GUI
 */
class Gui final
{
    public:
        /**
         * Constructor.
         */
        Gui();

        A_DELETE_COPY(Gui)

        /**
         * Destructor.
         */
        ~Gui();

        void postInit(Graphics *const graphics) A_NONNULL(2);

        /**
         * Performs logic of the GUI. Overridden to track mouse pointer
         * activity.
         */
        void logic();

        void slowLogic();

        void clearFonts();

        /**
         * Draws the whole Gui by calling draw functions down in the
         * Gui hierarchy. It also draws the mouse pointer.
         */
        void draw();

        /**
         * Called when the application window has been resized.
         */
        void videoResized() const;

        FocusHandler *getFocusHandler() const A_WARN_UNUSED
        { return mFocusHandler; }

        /**
         * Return game font.
         */
        Font *getFont() const RETURNS_NONNULL A_WARN_UNUSED
        { return mGuiFont; }

        /**
         * Return help font.
         */
        Font *getHelpFont() const RETURNS_NONNULL A_WARN_UNUSED
        { return mHelpFont; }

        /**
         * Return secure font.
         */
        Font *getSecureFont() const RETURNS_NONNULL A_WARN_UNUSED
        { return mSecureFont; }

        /**
         * Return npc font.
         */
        Font *getNpcFont() const RETURNS_NONNULL A_WARN_UNUSED
        { return mNpcFont; }

        /**
         * Return the Font used for "Info Particles", i.e. ones showing, what
         * you picked up, etc.
         */
        Font *getInfoParticleFont() const RETURNS_NONNULL A_WARN_UNUSED
        { return mInfoParticleFont; }

        /**
         * Sets whether a custom cursor should be rendered.
         */
        void setUseCustomCursor(const bool customCursor);

        /**
         * Sets which cursor should be used.
         */
        void setCursorType(const Cursor::Cursor index)
        { mCursorType = index; }

        void setDoubleClick(const bool b)
        { mDoubleClick = b; }

        void updateFonts();

        bool handleInput();

        bool handleKeyInput();

        void resetClickCount();

        MouseEvent *createMouseEvent(Window *const widget) A_WARN_UNUSED;

        static void getAbsolutePosition(Widget *restrict widget,
                                        int &restrict x,
                                        int &restrict y);

        void addGlobalFocusListener(FocusListener* focusListener);

        void removeGlobalFocusListener(FocusListener* focusListener);

        void distributeGlobalFocusGainedEvent(const Event &focusEvent);

        void removeDragged(const Widget *const widget);

        int getLastMouseX() const
        { return mLastMouseX; }

        int getLastMouseY() const
        { return mLastMouseY; }

        static MouseStateType getMouseState(int &x, int &y);

        /**
         * Sets the top widget. The top widget is the root widget
         * of the GUI. If you want a GUI to be able to contain more
         * than one widget the top widget should be a container.
         *
         * @param top The top widget.
         * @see Container
         * @since 0.1.0
         */
        void setTop(Widget *const top);

        /**
         * Gets the top widget. The top widget is the root widget
         * of the GUI.
         *
         * @return The top widget. NULL if no top widget has been set.
         * @since 0.1.0
         */
        Widget* getTop() const A_WARN_UNUSED
        { return mTop; }

        /**
         * Sets the graphics object to use for drawing.
         *
         * @param graphics The graphics object to use for drawing.
         * @see getGraphics, AllegroGraphics, HGEGraphics,
         *      OpenLayerGraphics, OpenGLGraphics, SDLGraphics
         * @since 0.1.0
         */
        void setGraphics(Graphics *const graphics) A_NONNULL(2);

        /**
         * Gets the graphics object used for drawing.
         *
         *  @return The graphics object used for drawing. NULL if no
         *          graphics object has been set.
         * @see setGraphics, AllegroGraphics, HGEGraphics,
         *      OpenLayerGraphics, OpenGLGraphics, SDLGraphics
         * @since 0.1.0
         */
        Graphics* getGraphics() const RETURNS_NONNULL A_WARN_UNUSED;

        /**
         * Sets the input object to use for input handling.
         *
         * @param input The input object to use for input handling.
         * @see getInput, AllegroInput, HGEInput, OpenLayerInput,
         *      SDLInput
         * @since 0.1.0
         */
        void setInput(SDLInput *const input) A_NONNULL(2);

        /**
         * Gets the input object being used for input handling.
         *
         *  @return The input object used for handling input. NULL if no
         *          input object has been set.
         * @see setInput, AllegroInput, HGEInput, OpenLayerInput,
         *      SDLInput
         * @since 0.1.0
         */
        SDLInput* getInput() const A_WARN_UNUSED;

        /**
         * Adds a global key listener to the Gui. A global key listener
         * will receive all key events generated from the GUI and global
         * key listeners will receive the events before key listeners
         * of widgets.
         *
         * @param keyListener The key listener to add.
         * @see removeGlobalKeyListener
         * @since 0.5.0
         */
        void addGlobalKeyListener(KeyListener *const keyListener);

        /**
         * Removes global key listener from the Gui.
         *
         * @param keyListener The key listener to remove.
         * @throws Exception if the key listener hasn't been added.
         * @see addGlobalKeyListener
         * @since 0.5.0
         */
        void removeGlobalKeyListener(KeyListener *const keyListener);

        bool isLongPress() const
        { return getMousePressLength() > 250; }

        int getMousePressLength() const;

    protected:
        void handleMouseMoved(const MouseInput &mouseInput);

        void handleMouseReleased(const MouseInput &mouseInput);

        void handleMousePressed(const MouseInput &mouseInput);

        void handleMouseInput();

        void distributeMouseEvent(Widget *const source,
                                  const MouseEventTypeT type,
                                  const MouseButtonT button,
                                  const int x, const int y,
                                  const bool force = false,
                                  const bool toSourceOnly = false);

        /**
         *
         * Handles mouse wheel moved down input.
         *
         * @param mouseInput The mouse input to handle.
         * @since 0.6.0
         */
        void handleMouseWheelMovedDown(const MouseInput& mouseInput);

        /**
         * Handles mouse wheel moved up input.
         *
         * @param mouseInput The mouse input to handle.
         * @since 0.6.0
         */
        void handleMouseWheelMovedUp(const MouseInput& mouseInput);

        /**
         * Gets the widget at a certain position.
         *
         * @return The widget at a certain position.
         * @since 0.6.0
         */
        Widget* getWidgetAt(const int x, const int y) const A_WARN_UNUSED;

        /**
         * Gets the source of the mouse event.
         *
         * @return The source widget of the mouse event.
         * @since 0.6.0
         */
        Widget* getMouseEventSource(const int x,
                                    const int y) const A_WARN_UNUSED;

        /**
         * Gets the source of the key event.
         *
         * @return The source widget of the key event.
         * @since 0.6.0
         */
        Widget* getKeyEventSource() const A_WARN_UNUSED;

        /**
         * Distributes a key event.
         *
         * @param event The key event to distribute.

         * @since 0.6.0
         */
        void distributeKeyEvent(KeyEvent &event) const;

        /**
         * Distributes a key event to the global key listeners.
         *
         * @param event The key event to distribute.
         *
         * @since 0.6.0
         */
        void distributeKeyEventToGlobalKeyListeners(KeyEvent& event);

        /**
         * Handles modal mouse input focus. Modal mouse input focus needs
         * to be checked at each logic iteration as it might be necessary to
         * distribute mouse entered or mouse exited events.
         *
         * @since 0.8.0
         */
        void handleModalMouseInputFocus();

        /**
         * Handles modal focus. Modal focus needs to be checked at
         * each logic iteration as it might be necessary to distribute
         * mouse entered or mouse exited events.
         *
         * @since 0.8.0
         */
        void handleModalFocus();

        /**
         * Handles modal focus gained. If modal focus has been gained it might
         * be necessary to distribute mouse entered or mouse exited events.
         *
         * @since 0.8.0
         */
        void handleModalFocusGained();

        /**
         * Handles modal mouse input focus gained. If modal focus has been
         * gained it might be necessary to distribute mouse entered or mouse
         * exited events.
         *
         * @since 0.8.0
         */
        void handleModalFocusReleased();

    private:
        /**
         * Holds the top widget.
         */
        Widget* mTop;

        /**
         * Holds the graphics implementation used.
         */
        Graphics* mGraphics A_NONNULLPOINTER;

        /**
         * Holds the input implementation used.
         */
        SDLInput* mInput A_NONNULLPOINTER;

        /**
         * Holds the focus handler for the Gui.
         */
        FocusHandler* mFocusHandler A_NONNULLPOINTER;

        /**
         * Typedef.
         */
        typedef std::list<KeyListener*> KeyListenerList;

        /**
         * Typedef.
         */
        typedef KeyListenerList::iterator KeyListenerListIterator;

        /**
         * Holds the global key listeners of the Gui.
         */
        KeyListenerList mKeyListeners;

        /**
         * Holds the last mouse button pressed.
         */
        MouseButtonT mLastMousePressButton;

        /**
         * Holds the last mouse press time stamp.
         */
        unsigned int mLastMousePressTimeStamp;

        /**
         * Holds the last mouse x coordinate.
         */
        int mLastMouseX;

        /**
         * Holds the last mouse y coordinate.
         */
        int mLastMouseY;

        /**
         * Holds the current click count. Used to keep track
         * of clicks for a the last pressed button.
         */
        int mClickCount;

        /**
         * Holds the last button used when a drag of a widget
         * was initiated. Used to be able to release a drag
         * when the same button is released.
         */
        MouseButtonT mLastMouseDragButton;

        /**
         * Holds a stack with all the widgets with the mouse.
         * Used to properly distribute mouse events.
         */
        std::deque<Widget*> mWidgetWithMouseQueue;

        GuiConfigListener *mConfigListener;
        /** The global GUI font */
        Font *mGuiFont A_NONNULLPOINTER;
        /** Font for Info Particles */
        Font *mInfoParticleFont A_NONNULLPOINTER;
        /** Font for Help Window */
        Font *mHelpFont A_NONNULLPOINTER;
        /** Font for secure labels */
        Font *mSecureFont A_NONNULLPOINTER;
        /** Font for npc text */
        Font *mNpcFont A_NONNULLPOINTER;
        /** Mouse cursor images */
        ImageSet *mMouseCursors;
        float mMouseCursorAlpha;
        int mMouseInactivityTimer;
        Cursor::Cursor mCursorType;
#ifdef ANDROID
        uint16_t mLastMouseRealX;
        uint16_t mLastMouseRealY;
#endif
        typedef std::list<FocusListener*> FocusListenerList;
        typedef FocusListenerList::iterator FocusListenerIterator;
        FocusListenerList mFocusListeners;
        Color mForegroundColor;
        Color mForegroundColor2;
        time_t mTime;
        time_t mTime10;
        bool mCustomCursor;                 /**< Show custom cursor */
        bool mDoubleClick;
};

extern Gui *gui;                            /**< The GUI system */

/**
 * Bolded text font
 */
extern Font *boldFont A_NONNULLPOINTER;

#endif  // GUI_GUI_H