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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*/
#include "common/stdafx.h"
#include "common/util.h"
#include "gui/TabWidget.h"
#include "gui/dialog.h"
#include "gui/newgui.h"
namespace GUI {
enum {
kTabHeight = 16,
kBigTabHeight = 21,
kTabLeftOffset = 4,
kTabSpacing = 2,
kTabPadding = 3
};
TabWidget::TabWidget(GuiObject *boss, int x, int y, int w, int h)
: Widget(boss, x, y, w, h) {
init();
}
TabWidget::TabWidget(GuiObject *boss, const String &name)
: Widget(boss, name) {
init();
}
void TabWidget::init() {
_flags = WIDGET_ENABLED;
_type = kTabWidget;
_activeTab = -1;
_tabWidth = 40;
if (g_gui.getWidgetSize() == kBigWidgetSize) {
_tabHeight = kBigTabHeight;
} else {
_tabHeight = kTabHeight;
}
}
TabWidget::~TabWidget() {
for (uint i = 0; i < _tabs.size(); ++i) {
delete _tabs[i].firstWidget;
_tabs[i].firstWidget = 0;
}
_tabs.clear();
}
int16 TabWidget::getChildY() const {
return getAbsY() + _tabHeight;
}
int TabWidget::addTab(const String &title) {
// Add a new tab page
Tab newTab;
newTab.title = title;
newTab.firstWidget = 0;
_tabs.push_back(newTab);
int numTabs = _tabs.size();
// Determine the new tab width
int newWidth = g_gui.getStringWidth(title) + 2 * kTabPadding;
if (_tabWidth < newWidth)
_tabWidth = newWidth;
int maxWidth = (_w - kTabLeftOffset) / numTabs - kTabLeftOffset;
if (_tabWidth > maxWidth)
_tabWidth = maxWidth;
// Activate the new tab
setActiveTab(numTabs - 1);
return _activeTab;
}
void TabWidget::setActiveTab(int tabID) {
assert(0 <= tabID && tabID < (int)_tabs.size());
if (_activeTab != tabID) {
// Exchange the widget lists, and switch to the new tab
if (_activeTab != -1) {
_tabs[_activeTab].firstWidget = _firstWidget;
releaseFocus();
}
_activeTab = tabID;
_firstWidget = _tabs[tabID].firstWidget;
_boss->draw();
}
}
void TabWidget::handleMouseDown(int x, int y, int button, int clickCount) {
assert(y < _tabHeight);
// Determine which tab was clicked
int tabID = -1;
x -= kTabLeftOffset;
if (x >= 0 && x % (_tabWidth + kTabSpacing) < _tabWidth) {
tabID = x / (_tabWidth + kTabSpacing);
if (tabID >= (int)_tabs.size())
tabID = -1;
}
// If a tab was clicked, switch to that pane
if (tabID >= 0) {
setActiveTab(tabID);
}
}
bool TabWidget::handleKeyDown(uint16 ascii, int keycode, int modifiers) {
// TODO: maybe there should be a way to switch between tabs
// using the keyboard? E.g. Alt-Shift-Left/Right-Arrow or something
// like that.
return Widget::handleKeyDown(ascii, keycode, modifiers);
}
void TabWidget::handleScreenChanged() {
for (uint i = 0; i < _tabs.size(); ++i) {
Widget *w = _tabs[i].firstWidget;
while (w) {
w->handleScreenChanged();
w = w->next();
}
}
if (g_gui.getWidgetSize() == kBigWidgetSize) {
_tabHeight = kBigTabHeight;
} else {
_tabHeight = kTabHeight;
}
Widget::handleScreenChanged();
}
void TabWidget::drawWidget(bool hilite) {
Common::Array<Common::String> tabs;
for (int i = 0; i < (int)_tabs.size(); ++i) {
tabs.push_back(_tabs[i].title);
}
g_gui.theme()->drawTab(Common::Rect(_x, _y, _x+_w, _y+_h), _tabHeight, _tabWidth, tabs, _activeTab, _hints);
}
Widget *TabWidget::findWidget(int x, int y) {
if (y < _tabHeight) {
// Click was in the tab area
return this;
} else {
// Iterate over all child widgets and find the one which was clicked
return Widget::findWidgetInChain(_firstWidget, x, y - _tabHeight);
}
}
} // End of namespace GUI
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