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
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2002 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 "stdafx.h"
#include "ScrollBarWidget.h"
#include "dialog.h"
#include "newgui.h"
/*
* TODO:
* - Auto-repeat: if one clicks & holds on one of the arrows, then after a
* brief delay, it should start to contiously scroll
* - Allow for a horizontal scrollbar, too?
* - If there are less items than fit on one pages, no scrolling can be done
* and we thus should not highlight the arrows/slider.
*/
#define UP_DOWN_BOX_HEIGHT 10
// Up arrow
static uint32 up_arrow[8] = {
0x00000000,
0x00000000,
0x00001000,
0x00001000,
0x00011100,
0x00011100,
0x00110110,
0x00100010,
};
// Up arrow
static uint32 down_arrow[8] = {
0x00000000,
0x00000000,
0x00100010,
0x00110110,
0x00011100,
0x00011100,
0x00001000,
0x00001000,
};
ScrollBarWidget::ScrollBarWidget(Dialog *boss, int x, int y, int w, int h)
: Widget (boss, x, y, w, h), CommandSender(boss)
{
_flags = WIDGET_ENABLED | WIDGET_TRACK_MOUSE | WIDGET_CLEARBG | WIDGET_WANT_TICKLE;
_type = kScrollBarWidget;
_part = kNoPart;
_draggingPart = kNoPart;
}
void ScrollBarWidget::handleMouseDown(int x, int y, int button)
{
int old_pos = _currentPos;
if (y <= UP_DOWN_BOX_HEIGHT) {
// Up arrow
_currentPos--;
_draggingPart = kUpArrowPart;
} else if (y >= _h - UP_DOWN_BOX_HEIGHT) {
// Down arrow
_currentPos++;
_draggingPart = kDownArrowPart;
} else if (y < _sliderPos) {
_currentPos -= _entriesPerPage;
} else if (y >= _sliderPos + _sliderHeight) {
_currentPos += _entriesPerPage;
} else {
_draggingPart = kSliderPart;
_sliderDeltaMouseDownPos = y - _sliderPos;
}
// Make sure that _currentPos is still inside the bounds
checkBounds(old_pos);
}
void ScrollBarWidget::handleMouseUp(int x, int y, int button)
{
if (_draggingPart != kNoPart)
_draggingPart = kNoPart;
}
void ScrollBarWidget::handleMouseMoved(int x, int y, int button)
{
if (_draggingPart == kSliderPart) {
int old_pos = _currentPos;
_sliderPos = y - _sliderDeltaMouseDownPos;
if (_sliderPos < UP_DOWN_BOX_HEIGHT)
_sliderPos = UP_DOWN_BOX_HEIGHT;
if (_sliderPos > _h - UP_DOWN_BOX_HEIGHT - _sliderHeight + 1)
_sliderPos = _h - UP_DOWN_BOX_HEIGHT - _sliderHeight + 1;
_currentPos =
(_sliderPos - UP_DOWN_BOX_HEIGHT) * (_numEntries - _entriesPerPage) / (_h - _sliderHeight -
2 * UP_DOWN_BOX_HEIGHT);
checkBounds(old_pos);
} else {
int old_part = _part;
if (y <= UP_DOWN_BOX_HEIGHT) // Up arrow
_part = kUpArrowPart;
else if (y >= _h - UP_DOWN_BOX_HEIGHT) // Down arrow
_part = kDownArrowPart;
else if (y < _sliderPos)
_part = kPageUpPart;
else if (y >= _sliderPos + _sliderHeight)
_part = kPageDownPart;
else
_part = kSliderPart;
if (old_part != _part)
draw();
}
}
void ScrollBarWidget::handleTickle()
{
/*
// FIXME - this code is supposed to allow for "click-repeat" (like key repeat),
// i.e. if you click on one of the arrows and keep clicked, it will scroll
// continously. However, just like key repeat, this requires two delays:
// First an "initial" delay that has to pass before repeating starts (otherwise
// it is near to impossible to achieve single clicks). Secondly, a repeat delay
// that determines how often per second a click is simulated.
int old_pos = _currentPos;
if (_draggingPart == kUpArrowPart)
_currentPos--;
else if (_draggingPart == kDownArrowPart)
_currentPos++;
// Make sure that _currentPos is still inside the bounds
checkBounds(old_pos);
*/
}
void ScrollBarWidget::checkBounds(int old_pos)
{
if (_currentPos > _numEntries - _entriesPerPage)
_currentPos = _numEntries - _entriesPerPage;
else if (_currentPos < 0)
_currentPos = 0;
if (old_pos != _currentPos) {
recalc();
draw();
sendCommand(kSetPositionCmd, _currentPos);
}
}
void ScrollBarWidget::recalc()
{
_sliderHeight = (_h - 2 * UP_DOWN_BOX_HEIGHT) * _entriesPerPage / _numEntries;
if (_sliderHeight < UP_DOWN_BOX_HEIGHT)
_sliderHeight = UP_DOWN_BOX_HEIGHT;
_sliderPos =
UP_DOWN_BOX_HEIGHT + (_h - 2 * UP_DOWN_BOX_HEIGHT - _sliderHeight + 1) * _currentPos / (_numEntries -
_entriesPerPage);
if (_sliderPos < 0)
_sliderPos = 0;
}
void ScrollBarWidget::drawWidget(bool hilite)
{
NewGui *gui = _boss->getGui();
int bottomY = _y + _h;
gui->frameRect(_x, _y, _w, _h, gui->_shadowcolor);
if (_draggingPart != kNoPart)
_part = _draggingPart;
// Up arrow
gui->frameRect(_x, _y, _w, UP_DOWN_BOX_HEIGHT, gui->_color);
gui->drawBitmap(up_arrow, _x, _y,
(hilite && _part == kUpArrowPart) ? gui->_textcolorhi : gui->_textcolor);
// Down arrow
gui->frameRect(_x, bottomY - UP_DOWN_BOX_HEIGHT + 1, _w, UP_DOWN_BOX_HEIGHT, gui->_color);
gui->drawBitmap(down_arrow, _x, bottomY - UP_DOWN_BOX_HEIGHT + 1,
(hilite && _part == kDownArrowPart) ? gui->_textcolorhi : gui->_textcolor);
// Slider
gui->checkerRect(_x, _y + _sliderPos, _w, _sliderHeight,
(hilite && _part == kSliderPart) ? gui->_textcolorhi : gui->_textcolor);
gui->frameRect(_x, _y + _sliderPos, _w, _sliderHeight, gui->_color);
}
|
