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changed the slider widget, better suited to represent volume settings this way (IMO)

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svn-id: r5918
This commit is contained in:
Max Horn 2002-12-12 23:21:29 +00:00
parent 307bb1048e
commit f6de146c5e
1 changed files with 9 additions and 19 deletions
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28
gui/widget.cpp
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@ -202,16 +202,17 @@ void CheckboxWidget::drawWidget(bool hilite)
SliderWidget::SliderWidget(Dialog *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),
_value(0), _oldValue(1), _valueMin(0), _valueMax(100)
_value(0), _valueMin(0), _valueMax(100)
{
_flags = WIDGET_ENABLED | WIDGET_TRACK_MOUSE | WIDGET_CLEARBG;
_type = kSliderWidget;
}
void SliderWidget::handleMouseMoved(int x, int y, int button) {
void SliderWidget::handleMouseMoved(int x, int y, int button) {
// TODO: when the mouse is dragged outside the widget, the slider should
// snap back to the old value.
if (isEnabled() && _isDragging) {
int newValue = posToValue(x);
if (newValue < _valueMin)
newValue = _valueMin;
else if (newValue > _valueMax)
@ -228,13 +229,8 @@ void SliderWidget::handleMouseMoved(int x, int y, int button) {
void SliderWidget::handleMouseDown(int x, int y, int button, int clickCount) {
if (isEnabled()) {
int barx;
barx = valueToPos(_value);
// only start dragging if mouse is over bar
if (x > (barx - 3) && x < (barx + 3))
_isDragging = true;
_isDragging = true;
handleMouseMoved(x, y, button);
}
}
@ -254,22 +250,16 @@ void SliderWidget::drawWidget(bool hilite)
// Draw the box
gui->box(_x, _y, _w, _h);
// Remove old 'bar' if necessary
if (_value != _oldValue) {
gui->fillRect(_x + valueToPos(_oldValue), _y + 2, 2, _h - 4, gui->_bgcolor);
_oldValue = _value;
}
// Draw the 'bar'
gui->fillRect(_x + valueToPos(_value), _y + 2, 2, _h - 4, hilite ? gui->_textcolorhi : gui->_textcolor);
gui->fillRect(_x + 2, _y + 2, valueToPos(_value), _h - 4, hilite ? gui->_textcolorhi : gui->_textcolor);
}
int SliderWidget::valueToPos(int value)
{
return 2 + ((_w - 6) * (value - _valueMin) / (_valueMax - _valueMin));
return ((_w - 4) * (value - _valueMin) / (_valueMax - _valueMin));
}
int SliderWidget::posToValue(int pos)
{
return (pos - 2) * (_valueMax - _valueMin) / (_w - 6) + _valueMin;
return (pos) * (_valueMax - _valueMin) / (_w - 4) + _valueMin;
}