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
|
/* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "common/util.h"
#include "gui/widgets/scrollcontainer.h"
#include "gui/gui-manager.h"
#include "gui/ThemeEval.h"
namespace GUI {
ScrollContainerWidget::ScrollContainerWidget(GuiObject *boss, int x, int y, int w, int h, uint32 reflowCmd)
: Widget(boss, x, y, w, h), CommandSender(nullptr), _reflowCmd(reflowCmd) {
init();
}
ScrollContainerWidget::ScrollContainerWidget(GuiObject *boss, const Common::String &name, const Common::String &dialogName, uint32 reflowCmd)
: Widget(boss, name), CommandSender(nullptr), _reflowCmd(reflowCmd), _dialogName(dialogName) {
init();
}
void ScrollContainerWidget::init() {
setFlags(WIDGET_ENABLED);
_type = kScrollContainerWidget;
_backgroundType = ThemeEngine::kWidgetBackgroundPlain;
_verticalScroll = new ScrollBarWidget(this, _w, 0, 16, _h);
_verticalScroll->setTarget(this);
_scrolledX = 0;
_scrolledY = 0;
_limitH = 140;
recalc();
}
void ScrollContainerWidget::handleMouseWheel(int x, int y, int direction) {
_verticalScroll->handleMouseWheel(x, y, direction);
}
void ScrollContainerWidget::recalc() {
_scrollbarWidth = g_gui.xmlEval()->getVar("Globals.Scrollbar.Width", 0);
_limitH = _h;
//calculate virtual height
const int spacing = g_gui.xmlEval()->getVar("Globals.Font.Height", 16); //on the bottom
int min = spacing, max = 0;
Widget *ptr = _firstWidget;
while (ptr) {
if (ptr != _verticalScroll && ptr->isVisible()) {
int y = ptr->getAbsY() - getChildY();
min = MIN(min, y - spacing);
max = MAX(max, y + ptr->getHeight() + spacing);
}
ptr = ptr->next();
}
int h = max - min;
if (h <= _limitH) _scrolledY = 0;
if (_scrolledY > h - _limitH) _scrolledY = 0;
_verticalScroll->_numEntries = h;
_verticalScroll->_currentPos = _scrolledY;
_verticalScroll->_entriesPerPage = _limitH;
_verticalScroll->_singleStep = kLineHeight;
_verticalScroll->setPos(_w, _scrolledY);
_verticalScroll->setSize(_scrollbarWidth, _limitH-1);
}
ScrollContainerWidget::~ScrollContainerWidget() {}
int16 ScrollContainerWidget::getChildX() const {
return getAbsX() - _scrolledX;
}
int16 ScrollContainerWidget::getChildY() const {
return getAbsY() - _scrolledY;
}
uint16 ScrollContainerWidget::getWidth() const {
// NOTE: if you change that, make sure to do the same
// changes in the ThemeLayoutScrollContainerWidget (gui/ThemeLayout.cpp)
// NOTE: this width is used for clipping, so it *includes*
// scrollbars, because it starts from getAbsX(), not getChildX()
return _w + _scrollbarWidth;
}
uint16 ScrollContainerWidget::getHeight() const {
return _limitH;
}
void ScrollContainerWidget::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
Widget::handleCommand(sender, cmd, data);
switch (cmd) {
case kSetPositionCmd:
_scrolledY = _verticalScroll->_currentPos;
reflowLayout();
g_gui.scheduleTopDialogRedraw();
break;
default:
break;
}
}
void ScrollContainerWidget::reflowLayout() {
Widget::reflowLayout();
if (!_dialogName.empty()) {
g_gui.xmlEval()->reflowDialogLayout(_dialogName, _firstWidget);
}
//reflow layout of inner widgets
Widget *ptr = _firstWidget;
while (ptr) {
ptr->reflowLayout();
ptr = ptr->next();
}
//hide and move widgets, if needed
sendCommand(_reflowCmd, 0);
//recalculate height
recalc();
_verticalScroll->setVisible(_verticalScroll->_numEntries > _limitH); //show when there is something to scroll
_verticalScroll->recalc();
}
void ScrollContainerWidget::drawWidget() {
g_gui.theme()->drawWidgetBackground(Common::Rect(_x, _y, _x + _w, _y + getHeight()), _backgroundType);
}
void ScrollContainerWidget::draw() {
Widget::draw();
if (_verticalScroll->isVisible()) {
_verticalScroll->draw();
}
}
void ScrollContainerWidget::markAsDirty() {
Widget::markAsDirty();
if (_verticalScroll->isVisible()) {
_verticalScroll->markAsDirty();
}
}
bool ScrollContainerWidget::containsWidget(Widget *w) const {
if (w == _verticalScroll || _verticalScroll->containsWidget(w))
return true;
return containsWidgetInChain(_firstWidget, w);
}
Widget *ScrollContainerWidget::findWidget(int x, int y) {
if (_verticalScroll->isVisible() && x >= _w)
return _verticalScroll;
Widget *w = Widget::findWidgetInChain(_firstWidget, x + _scrolledX, y + _scrolledY);
if (w)
return w;
return this;
}
void ScrollContainerWidget::setBackgroundType(ThemeEngine::WidgetBackground backgroundType) {
_backgroundType = backgroundType;
}
} // End of namespace GUI
|
