scummvm/gui/widget.cpp

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/* 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 "widget.h"
#include "dialog.h"
#include "newgui.h"
Widget::Widget (Dialog *boss, int x, int y, int w, int h)
: _type(0), _boss(boss), _x(x), _y(y), _w(w), _h(h), _id(0), _flags(0)
{
// Insert into the widget list of the boss
_next = _boss->_firstWidget;
_boss->_firstWidget = this;
}
void Widget::draw()
{
NewGui *gui = _boss->_gui;
if (_flags & WIDGET_INVISIBLE)
return;
// Account for our relative position in the dialog
_x += _boss->_x;
_y += _boss->_y;
// Clear background (unless alpha blending is enabled)
if (_flags & WIDGET_CLEARBG && !_boss->_screenBuf)
gui->fillRect(_x, _y, _w, _h, gui->_bgcolor);
// Draw border
if (_flags & WIDGET_BORDER) {
gui->box(_x, _y, _w, _h);
_x += 4;
_y += 4;
}
// Now perform the actual widget draw
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drawWidget(_flags & WIDGET_HILITED);
// Flag the draw area as dirty
gui->addDirtyRect(_x, _y, _w, _h);
// Restore x/y
if (_flags & WIDGET_BORDER) {
_x -= 4;
_y -= 4;
}
_x -= _boss->_x;
_y -= _boss->_y;
}
#pragma mark -
StaticTextWidget::StaticTextWidget(Dialog *boss, int x, int y, int w, int h, const char *text)
: Widget (boss, x, y, w, h), _text(0)
{
_type = kStaticTextWidget;
setText(text);
}
StaticTextWidget::~StaticTextWidget()
{
if (_text) {
free(_text);
_text = 0;
}
}
void StaticTextWidget::setText(const char *text)
{
// Free old text if any
if (_text)
free(_text);
// Duplicate new text
if (text)
_text = strdup(text);
else
_text = 0;
}
void StaticTextWidget::drawWidget(bool hilite)
{
NewGui *gui = _boss->getGui();
gui->drawString(_text, _x, _y, _w, hilite ? gui->_textcolorhi : gui->_textcolor);
}
#pragma mark -
ButtonWidget::ButtonWidget(Dialog *boss, int x, int y, int w, int h, const char *label, uint32 cmd, uint8 hotkey)
: StaticTextWidget(boss, x, y, w, h, label), _cmd(cmd), _hotkey(hotkey)
{
_flags = WIDGET_ENABLED | WIDGET_BORDER | WIDGET_CLEARBG ;
_type = kButtonWidget;
}
void ButtonWidget::handleClick(int button)
{
if (_flags & WIDGET_ENABLED && _cmd)
_boss->handleCommand(_cmd);
}
#pragma mark -
/* 8x8 checkbox bitmap */
static uint32 checked_img[8] = {
0x00000000,
0x01000010,
0x00100100,
0x00011000,
0x00011000,
0x00100100,
0x01000010,
0x00000000,
};
CheckboxWidget::CheckboxWidget(Dialog *boss, int x, int y, int w, int h, const char *label, uint32 cmd, uint8 hotkey)
: ButtonWidget(boss, x, y, w, h, label, cmd, hotkey), _state(false)
{
_flags = WIDGET_ENABLED;
_type = kCheckboxWidget;
}
void CheckboxWidget::handleClick(int button)
{
if (_flags & WIDGET_ENABLED) {
_state = !_state;
draw();
if (_cmd)
_boss->handleCommand(_cmd);
}
}
void CheckboxWidget::drawWidget(bool hilite)
{
NewGui *gui = _boss->getGui();
// Draw the box
gui->box(_x, _y, 14, 14);
// If checked, draw cross inside the box
if (_state)
gui->drawBitmap(checked_img, _x + 3, _y + 3, gui->_textcolor);
else
gui->fillRect(_x + 2, _y + 2, 10, 10, gui->_bgcolor);
// Finally draw the label
gui->drawString(_text, _x + 20, _y + 3, _w, gui->_textcolor);
}
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#pragma mark -
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SliderWidget::SliderWidget(Dialog *boss, int x, int y, int w, int h, const char *label, uint32 cmd, uint8 hotkey)
: ButtonWidget(boss, x, y, w, h, label, cmd, hotkey), _value(0), _old_value(1)
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{
_flags = WIDGET_ENABLED | WIDGET_TRACK_MOUSE | WIDGET_CLEARBG;
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_type = kSliderWidget;
}
void SliderWidget::handleMouseMoved(int x, int y, int state) {
if (state == 1) {
int newvalue = x * 100 / _w;
if (newvalue != _value) {
_value = newvalue;
draw();
}
}
}
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void SliderWidget::drawWidget(bool hilite)
{
NewGui *gui = _boss->getGui();
// Draw the box
gui->box(_x, _y, _w, _h);
// Remove old 'bar' if necessary
if (_value != _old_value) {
gui->fillRect(_x + 2 + ((_w - 5) * _old_value / 100), _y + 2, 2, _h - 4, gui->_bgcolor);
_old_value = _value;
}
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// Draw the 'bar'
gui->fillRect(_x + 2 + ((_w - 5) * _value / 100), _y + 2, 2, _h - 4, hilite ? gui->_textcolorhi : gui->_textcolor);
}