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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2005 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 "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, WidgetSize ws)
: Widget(boss, x, y, w, h), _ws(ws) {
_flags = WIDGET_ENABLED;
_type = kTabWidget;
_activeTab = -1;
_tabWidth = 40;
if (_ws == 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);
}
static void box(int x, int y, int width, int height, OverlayColor colorA, OverlayColor colorB, bool omitBottom) {
NewGui &gui = g_gui;
gui.hLine(x + 1, y, x + width - 2, colorA);
gui.hLine(x, y + 1, x + width - 1, colorA);
gui.vLine(x, y + 1, y + height - (omitBottom ? 1 : 2), colorA);
gui.vLine(x + 1, y, y + height - (omitBottom ? 2 : 1), colorA);
if (!omitBottom) {
gui.hLine(x + 1, y + height - 2, x + width - 1, colorB);
gui.hLine(x + 1, y + height - 1, x + width - 2, colorB);
}
gui.vLine(x + width - 1, y + 1, y + height - (omitBottom ? 1 : 2), colorB);
gui.vLine(x + width - 2, y + 1, y + height - (omitBottom ? 2 : 1), colorB);
}
void TabWidget::drawWidget(bool hilite) {
NewGui *gui = &g_gui;
const int left1 = _x + 1;
const int right1 = _x + kTabLeftOffset + _activeTab * (_tabWidth + kTabSpacing);
const int left2 = right1 + _tabWidth;
const int right2 = _x + _w - 2;
// Draw horizontal line
gui->hLine(left1, _y + _tabHeight - 2, right1, gui->_shadowcolor);
gui->hLine(left2, _y + _tabHeight - 2, right2, gui->_shadowcolor);
// Iterate over all tabs and draw them
int i, x = _x + kTabLeftOffset;
for (i = 0; i < (int)_tabs.size(); ++i) {
OverlayColor color = (i == _activeTab) ? gui->_color : gui->_shadowcolor;
int yOffset = (i == _activeTab) ? 0 : 2;
box(x, _y + yOffset, _tabWidth, _tabHeight - yOffset, color, color, (i == _activeTab));
gui->drawString(_tabs[i].title, x + kTabPadding, _y + yOffset / 2 + (_tabHeight - gui->getFontHeight() - 3), _tabWidth - 2 * kTabPadding, gui->_textcolor, kTextAlignCenter);
x += _tabWidth + kTabSpacing;
}
// Draw more horizontal lines
gui->hLine(left1, _y + _tabHeight - 1, right1, gui->_color);
gui->hLine(left2, _y + _tabHeight - 1, right2, gui->_color);
gui->hLine(_x+1, _y + _h - 2, _x + _w - 2, gui->_shadowcolor);
gui->hLine(_x+1, _y + _h - 1, _x + _w - 2, gui->_color);
}
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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