aboutsummaryrefslogtreecommitdiff
path: root/gui/dialog.cpp
blob: 2cd6848d0b7da48be3c40ef4cd6f46be38b0650c (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
/* ScummVM - Scumm Interpreter
 * Copyright (C) 2002-2003 The ScummVM project
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 */

#include <ctype.h>

#include "stdafx.h"
#include "newgui.h"
#include "dialog.h"
#include "widget.h"

/*
 * TODO list
 * - add some sense of the window being "active" (i.e. in front) or not. If it 
 *   was inactive and just became active, reset certain vars (like who is focused).
 *   Maybe we should just add lostFocus and receivedFocus methods to Dialog, just
 *   like we have for class Widget?
 * ...
 */

Dialog::~Dialog() {
	Widget *w = _firstWidget, *next;
	while (w) {
		next = w->_next;
		w->_next = 0;
		delete w;
		w = next;
	}
	_firstWidget = 0;
}

int Dialog::runModal() {
	// Open up
	open();

	// Start processing events
	g_gui.runLoop();

	// Return the result code
	return _result;
}

void Dialog::open() {
	Widget *w = _firstWidget;

	_result = 0;
	_visible = true;
	g_gui.openDialog(this);
	
	// Search for the first objects that wantsFocus() (if any) and give it the focus
	while (w && !w->wantsFocus()) {
		w = w->_next;
	}

	if (w) {
		w->receivedFocus();
		_focusedWidget = w;
	}
}

void Dialog::close() {
	_visible = false;
	g_gui.closeTopDialog();

	if (_mouseWidget) {
		_mouseWidget->handleMouseLeft(0);
		_mouseWidget = 0;
	}
	releaseFocus();
}

void Dialog::releaseFocus() {
	if (_focusedWidget) {
		_focusedWidget->lostFocus();
		_focusedWidget = 0;
	}
}

void Dialog::draw() {
	g_gui._needRedraw = true;
}

void Dialog::drawDialog() {
	
	if (!isVisible())
		return;

	g_gui.blendRect(_x, _y, _w, _h, g_gui._bgcolor);
	g_gui.box(_x, _y, _w, _h, g_gui._color, g_gui._shadowcolor);

	// Draw all children
	Widget *w = _firstWidget;
	while (w) {
		w->draw();
		w = w->_next;
	}

	// Flag the draw area as dirty
	g_gui.addDirtyRect(_x, _y, _w, _h);
}

void Dialog::handleMouseDown(int x, int y, int button, int clickCount) {
	Widget *w;
	w = findWidget(x, y);

	// If the click occured inside a widget which is not the currently
	// focused one, change the focus to that widget.
	// TODO: use the wantsFocus() method to objects, so that only fields
	// that want it get the focus (like edit fields, list field...)
	// However, right now we "abuse" the focus also for the click&drag
	// behaviour of buttons. This should probably be changed by adding
	// a nother field, e.g. _clickedWidget or _dragWidget.
	if (w && w != _focusedWidget) {
		// The focus will change. Tell the old focused widget (if any)
		// that it lost the focus.
		releaseFocus();

		// Tell the new focused widget (if any) that it just gained the focus.
		if (w)
			w->receivedFocus();

		_focusedWidget = w;
	}

	if (w && w == _focusedWidget)
		_focusedWidget->handleMouseDown(x - (_focusedWidget->getAbsX() - _x), y - (_focusedWidget->getAbsY() - _y), button, clickCount);
}

void Dialog::handleMouseUp(int x, int y, int button, int clickCount) {
	Widget *w;

	if (_focusedWidget) {
		w = _focusedWidget;
		
		// Lose focus on mouseup unless the widget requested to retain the focus
		if (! (_focusedWidget->getFlags() & WIDGET_RETAIN_FOCUS )) {
			releaseFocus();
		}

	} else {
		w = findWidget(x, y);
	}

	if (w)
		w->handleMouseUp(x - (w->getAbsX() - _x), y - (w->getAbsY() - _y), button, clickCount);
}

void Dialog::handleMouseWheel(int x, int y, int direction) {
	Widget *w;

	// This may look a bit backwards, but I think it makes more sense for
	// the mouse wheel to primarily affect the widget the mouse is at than
	// the widget that happens to be focused.

	w = findWidget(x, y);
	if (!w)
		w = _focusedWidget;
	if (w)
		w->handleMouseWheel(x, y, direction);
}

void Dialog::handleKeyDown(uint16 ascii, int keycode, int modifiers) {
	if (_focusedWidget) {
		if (_focusedWidget->handleKeyDown(ascii, keycode, modifiers))
			return;
	}

	// Hotkey handling
	if (ascii != 0) {
		Widget *w = _firstWidget;
		ascii = toupper(ascii);
		while (w) {
			if (w->_type == kButtonWidget && ascii == toupper(((ButtonWidget *)w)->_hotkey)) {
				// The hotkey for widget w was pressed. We fake a mouse click into the
				// button by invoking the appropriate methods.
				w->handleMouseDown(0, 0, 1, 1);
				w->handleMouseUp(0, 0, 1, 1);
				return;
			}
			w = w->_next;
		}
	}

	// ESC closes all dialogs by default
	if (keycode == 27)
		close();

	// TODO: tab/shift-tab should focus the next/previous focusable widget
}

void Dialog::handleKeyUp(uint16 ascii, int keycode, int modifiers) {
	// Focused widget receives keyup events
	if (_focusedWidget)
		_focusedWidget->handleKeyUp(ascii, keycode, modifiers);
}

void Dialog::handleMouseMoved(int x, int y, int button) {
	Widget *w;
	
	if (_focusedWidget) {
		w = _focusedWidget;
		int wx = w->getAbsX() - _x;
		int wy = w->getAbsY() - _y;
		
		// We still send mouseEntered/Left messages to the focused item
		// (but to no other items).
		bool mouseInFocusedWidget = (x >= wx && x < wx + w->_w && y >= wy && y < wy + w->_h);
		if (mouseInFocusedWidget && _mouseWidget != w) {
			_mouseWidget = w;
			w->handleMouseEntered(button);
		} else if (!mouseInFocusedWidget && _mouseWidget == w) {
			_mouseWidget = 0;
			w->handleMouseLeft(button);
		}

		w->handleMouseMoved(x - wx, y - wy, button);
	}

	w = findWidget(x, y);

	if (_mouseWidget != w) {
		if (_mouseWidget)
			_mouseWidget->handleMouseLeft(button);
		if (w)
			w->handleMouseEntered(button);
		_mouseWidget = w;
	} 

	if (!w || !(w->getFlags() & WIDGET_TRACK_MOUSE)) {
		return;
	}
	
	w->handleMouseMoved(x - (w->getAbsX() - _x), y - (w->getAbsY() - _y), button);
}

void Dialog::handleTickle() {
	// Focused widget receives tickle notifications
	if (_focusedWidget && _focusedWidget->getFlags() & WIDGET_WANT_TICKLE) {
		_focusedWidget->handleTickle();
	}
}

void Dialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
	switch (cmd) {
	case kCloseCmd:
		close();
		break;
	}
}

/*
 * Determine the widget at location (x,y) if any. Assumes the coordinates are
 * in the local coordinate system, i.e. relative to the top left of the dialog.
 */
Widget *Dialog::findWidget(int x, int y) {
	return Widget::findWidgetInChain(_firstWidget, x, y);
}

ButtonWidget *Dialog::addButton(int x, int y, const Common::String &label, uint32 cmd, char hotkey) {
	return new ButtonWidget(this, x, y, kButtonWidth, 16, label, cmd, hotkey);
}