Logo Search packages:      
Sourcecode: scummvm version File versions

widget.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2002-2004 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: /cvsroot/scummvm/scummvm/gui/widget.cpp,v 1.38.2.1 2004/12/30 13:14:04 fingolfin Exp $
 */

#include "stdafx.h"
#include "common/util.h"
#include "gui/widget.h"
#include "gui/dialog.h"
#include "gui/newgui.h"


namespace GUI {

Widget::Widget(GuiObject *boss, int x, int y, int w, int h)
      : GuiObject(x, y, w, h), _type(0), _boss(boss),
        _id(0), _flags(0), _hasFocus(false) {
      // Insert into the widget list of the boss
      _next = _boss->_firstWidget;
      _boss->_firstWidget = this;
}

Widget::~Widget() {
      delete _next;
}

void Widget::draw() {
      NewGui *gui = &g_gui;

      if (!isVisible() || !_boss->isVisible())
            return;

      int oldX = _x, oldY = _y;

      // Account for our relative position in the dialog
      _x = getAbsX();
      _y = getAbsY();

      // Clear background (unless alpha blending is enabled)
      if (_flags & WIDGET_CLEARBG)
            gui->fillRect(_x, _y, _w, _h, gui->_bgcolor);

      // Draw border
      if (_flags & WIDGET_BORDER) {
            OverlayColor colorA = gui->_color;
            OverlayColor colorB = gui->_shadowcolor;
            if ((_flags & WIDGET_INV_BORDER) == WIDGET_INV_BORDER)
                  SWAP(colorA, colorB);
            gui->box(_x, _y, _w, _h, colorA, colorB);
            _x += 4;
            _y += 4;
            _w -= 8;
            _h -= 8;
      }

      // Now perform the actual widget draw
      drawWidget((_flags & WIDGET_HILITED) ? true : false);

      // Restore x/y
      if (_flags & WIDGET_BORDER) {
            _x -= 4;
            _y -= 4;
            _w += 8;
            _h += 8;
      }

      // Flag the draw area as dirty
      gui->addDirtyRect(_x, _y, _w, _h);

      _x = oldX;
      _y = oldY;

      // Draw all children
      Widget *w = _firstWidget;
      while (w) {
            w->draw();
            w = w->_next;
      }
}

Widget *Widget::findWidgetInChain(Widget *w, int x, int y) {
      while (w) {
            // Stop as soon as we find a widget that contains the point (x,y)
            if (x >= w->_x && x < w->_x + w->_w && y >= w->_y && y < w->_y + w->_h)
                  break;
            w = w->_next;
      }
      if (w)
            w = w->findWidget(x - w->_x, y - w->_y);
      return w;
}

#pragma mark -

StaticTextWidget::StaticTextWidget(GuiObject *boss, int x, int y, int w, int h, const String &text, TextAlignment align)
      : Widget(boss, x, y, w, h), _align(align) {
      _flags = WIDGET_ENABLED;
      _type = kStaticTextWidget;
      setLabel(text);
}

void StaticTextWidget::setValue(int value) {
      char buf[256];
      sprintf(buf, "%d", value);
      _label = buf;
}

void StaticTextWidget::drawWidget(bool hilite) {
      NewGui *gui = &g_gui;
      gui->drawString(_label, _x, _y, _w, isEnabled() ? gui->_textcolor : gui->_color, _align);
}

#pragma mark -

ButtonWidget::ButtonWidget(GuiObject *boss, int x, int y, int w, int h, const String &label, uint32 cmd, uint8 hotkey)
      : StaticTextWidget(boss, x, y, w, h, label, kTextAlignCenter), CommandSender(boss),
        _cmd(cmd), _hotkey(hotkey) {
      _flags = WIDGET_ENABLED | WIDGET_BORDER | WIDGET_CLEARBG;
      _type = kButtonWidget;
}

void ButtonWidget::handleMouseUp(int x, int y, int button, int clickCount) {
      if (isEnabled() && x >= 0 && x < _w && y >= 0 && y < _h)
            sendCommand(_cmd, 0);
}

void ButtonWidget::drawWidget(bool hilite) {
      NewGui *gui = &g_gui;
      gui->drawString(_label, _x, _y + (_h - kLineHeight)/2 + 1, _w,
                              !isEnabled() ? gui->_color :
                              hilite ? gui->_textcolorhi : gui->_textcolor, _align);
}

#pragma mark -

/* 8x8 checkbox bitmap */
static uint32 checked_img[8] = {
      0x00000000,
      0x01000010,
      0x00100100,
      0x00011000,
      0x00011000,
      0x00100100,
      0x01000010,
      0x00000000,
};

CheckboxWidget::CheckboxWidget(GuiObject *boss, int x, int y, int w, int h, const String &label, uint32 cmd, uint8 hotkey)
      : ButtonWidget(boss, x, y, w, h, label, cmd, hotkey), _state(false) {
      _flags = WIDGET_ENABLED;
      _type = kCheckboxWidget;
}

void CheckboxWidget::handleMouseUp(int x, int y, int button, int clickCount) {
      if (isEnabled() && x >= 0 && x < _w && y >= 0 && y < _h) {
            toggleState();
      }
}

void CheckboxWidget::setState(bool state) {
      if (_state != state) {
            _state = state;
            _flags ^= WIDGET_INV_BORDER;
            draw();
      }
      sendCommand(_cmd, _state);
}

void CheckboxWidget::drawWidget(bool hilite) {
      NewGui *gui = &g_gui;

      // Draw the box
      gui->box(_x, _y, 14, 14, gui->_color, gui->_shadowcolor);

      // If checked, draw cross inside the box
      if (_state)
            gui->drawBitmap(checked_img, _x + 3, _y + 3, isEnabled() ? gui->_textcolor : gui->_color);
      else
            gui->fillRect(_x + 2, _y + 2, 10, 10, gui->_bgcolor);

      // Finally draw the label
      gui->drawString(_label, _x + 20, _y + 3, _w, isEnabled() ? gui->_textcolor : gui->_color);
}

#pragma mark -

SliderWidget::SliderWidget(GuiObject *boss, int x, int y, int w, int h, const String &label, uint labelWidth, uint32 cmd, uint8 hotkey)
      : ButtonWidget(boss, x, y, w, h, label, cmd, hotkey),
        _value(0), _oldValue(0), _valueMin(0), _valueMax(100), _isDragging(false),
        _labelWidth(labelWidth) {
      _flags = WIDGET_ENABLED | WIDGET_TRACK_MOUSE | WIDGET_CLEARBG;
      _type = kSliderWidget;
}

void SliderWidget::handleMouseMoved(int x, int y, int button) {
      if (isEnabled() && _isDragging && x >= (int)_labelWidth) {
            int newValue = posToValue(x - _labelWidth);
            if (newValue < _valueMin)
                  newValue = _valueMin;
            else if (newValue > _valueMax)
                  newValue = _valueMax;

            if (newValue != _value) {
                  _value = newValue; 
                  draw();
                  sendCommand(_cmd, _value);    // FIXME - hack to allow for "live update" in sound dialog
            }
      }
}

void SliderWidget::handleMouseDown(int x, int y, int button, int clickCount) {
      if (isEnabled()) {
            _isDragging = true;
            handleMouseMoved(x, y, button);
      }
}

void SliderWidget::handleMouseUp(int x, int y, int button, int clickCount) {
      if (isEnabled() && _isDragging) {
            sendCommand(_cmd, _value);
      }
      _isDragging = false;
}

void SliderWidget::drawWidget(bool hilite) {
      NewGui *gui = &g_gui;

      // Draw the label, if any
      if (_labelWidth > 0)
            gui->drawString(_label, _x, _y + 2, _labelWidth, isEnabled() ? gui->_textcolor : gui->_color, kTextAlignRight);

      // Draw the box
      gui->box(_x + _labelWidth, _y, _w - _labelWidth, _h, gui->_color, gui->_shadowcolor);

      // Draw the 'bar'
      gui->fillRect(_x + _labelWidth + 2, _y + 2, valueToPos(_value), _h - 4,
                        !isEnabled() ? gui->_color :
                        hilite ? gui->_textcolorhi : gui->_textcolor);
}

int SliderWidget::valueToPos(int value) {
      return ((_w - _labelWidth - 4) * (value - _valueMin) / (_valueMax - _valueMin));
}

int SliderWidget::posToValue(int pos) {
      return (pos) * (_valueMax - _valueMin) / (_w - _labelWidth - 4) + _valueMin;
}

} // End of namespace GUI

Generated by  Doxygen 1.6.0   Back to index