mirror of
https://github.com/minetest/irrlicht.git
synced 2024-11-03 00:40:41 +01:00
8310a3fbad
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6000 dfc29bdd-3216-0410-991c-e03cc46cb475
573 lines
14 KiB
C++
573 lines
14 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
|
|
// This file is part of the "Irrlicht Engine".
|
|
// For conditions of distribution and use, see copyright notice in irrlicht.h
|
|
|
|
#include "CGUIScrollBar.h"
|
|
#ifdef _IRR_COMPILE_WITH_GUI_
|
|
|
|
#include "IGUISkin.h"
|
|
#include "IGUIEnvironment.h"
|
|
#include "IVideoDriver.h"
|
|
#include "CGUIButton.h"
|
|
#include "IGUIFont.h"
|
|
#include "IGUIFontBitmap.h"
|
|
#include "os.h"
|
|
|
|
namespace irr
|
|
{
|
|
namespace gui
|
|
{
|
|
|
|
|
|
//! constructor
|
|
CGUIScrollBar::CGUIScrollBar(bool horizontal, IGUIEnvironment* environment,
|
|
IGUIElement* parent, s32 id,
|
|
core::rect<s32> rectangle, bool noclip)
|
|
: IGUIScrollBar(environment, parent, id, rectangle), UpButton(0),
|
|
DownButton(0), Dragging(false), Horizontal(horizontal),
|
|
DraggedBySlider(false), TrayClick(false), Pos(0), DrawPos(0),
|
|
DrawHeight(0), Min(0), Max(100), SmallStep(10), LargeStep(50), DesiredPos(0),
|
|
LastChange(0)
|
|
{
|
|
#ifdef _DEBUG
|
|
setDebugName("CGUIScrollBar");
|
|
#endif
|
|
|
|
refreshControls();
|
|
|
|
setNotClipped(noclip);
|
|
|
|
// this element can be tabbed to
|
|
setTabStop(true);
|
|
setTabOrder(-1);
|
|
|
|
setPos(0);
|
|
}
|
|
|
|
|
|
//! destructor
|
|
CGUIScrollBar::~CGUIScrollBar()
|
|
{
|
|
if (UpButton)
|
|
UpButton->drop();
|
|
|
|
if (DownButton)
|
|
DownButton->drop();
|
|
}
|
|
|
|
|
|
//! called if an event happened.
|
|
bool CGUIScrollBar::OnEvent(const SEvent& event)
|
|
{
|
|
if (isEnabled())
|
|
{
|
|
|
|
switch(event.EventType)
|
|
{
|
|
case EET_KEY_INPUT_EVENT:
|
|
if (event.KeyInput.PressedDown)
|
|
{
|
|
const s32 oldPos = Pos;
|
|
bool absorb = true;
|
|
switch (event.KeyInput.Key)
|
|
{
|
|
case KEY_LEFT:
|
|
case KEY_UP:
|
|
setPos(Pos-SmallStep);
|
|
break;
|
|
case KEY_RIGHT:
|
|
case KEY_DOWN:
|
|
setPos(Pos+SmallStep);
|
|
break;
|
|
case KEY_HOME:
|
|
setPos(Min);
|
|
break;
|
|
case KEY_PRIOR:
|
|
setPos(Pos-LargeStep);
|
|
break;
|
|
case KEY_END:
|
|
setPos(Max);
|
|
break;
|
|
case KEY_NEXT:
|
|
setPos(Pos+LargeStep);
|
|
break;
|
|
default:
|
|
absorb = false;
|
|
}
|
|
|
|
if (Pos != oldPos)
|
|
{
|
|
SEvent newEvent;
|
|
newEvent.EventType = EET_GUI_EVENT;
|
|
newEvent.GUIEvent.Caller = this;
|
|
newEvent.GUIEvent.Element = 0;
|
|
newEvent.GUIEvent.EventType = EGET_SCROLL_BAR_CHANGED;
|
|
Parent->OnEvent(newEvent);
|
|
}
|
|
if (absorb)
|
|
return true;
|
|
}
|
|
break;
|
|
case EET_GUI_EVENT:
|
|
if (event.GUIEvent.EventType == EGET_BUTTON_CLICKED)
|
|
{
|
|
if (event.GUIEvent.Caller == UpButton)
|
|
setPos(Pos-SmallStep);
|
|
else
|
|
if (event.GUIEvent.Caller == DownButton)
|
|
setPos(Pos+SmallStep);
|
|
|
|
SEvent newEvent;
|
|
newEvent.EventType = EET_GUI_EVENT;
|
|
newEvent.GUIEvent.Caller = this;
|
|
newEvent.GUIEvent.Element = 0;
|
|
newEvent.GUIEvent.EventType = EGET_SCROLL_BAR_CHANGED;
|
|
Parent->OnEvent(newEvent);
|
|
|
|
return true;
|
|
}
|
|
else
|
|
if (event.GUIEvent.EventType == EGET_ELEMENT_FOCUS_LOST)
|
|
{
|
|
if (event.GUIEvent.Caller == this)
|
|
Dragging = false;
|
|
}
|
|
break;
|
|
case EET_MOUSE_INPUT_EVENT:
|
|
{
|
|
const core::position2di p(event.MouseInput.X, event.MouseInput.Y);
|
|
bool isInside = isPointInside ( p );
|
|
switch(event.MouseInput.Event)
|
|
{
|
|
case EMIE_MOUSE_WHEEL:
|
|
if (Environment->hasFocus(this))
|
|
{
|
|
// thanks to a bug report by REAPER
|
|
// thanks to tommi by tommi for another bugfix
|
|
// everybody needs a little thanking. hallo niko!;-)
|
|
setPos( getPos() +
|
|
( (event.MouseInput.Wheel < 0 ? -1 : 1) * SmallStep * (Horizontal ? 1 : -1 ) )
|
|
);
|
|
|
|
SEvent newEvent;
|
|
newEvent.EventType = EET_GUI_EVENT;
|
|
newEvent.GUIEvent.Caller = this;
|
|
newEvent.GUIEvent.Element = 0;
|
|
newEvent.GUIEvent.EventType = EGET_SCROLL_BAR_CHANGED;
|
|
Parent->OnEvent(newEvent);
|
|
return true;
|
|
}
|
|
break;
|
|
case EMIE_LMOUSE_PRESSED_DOWN:
|
|
{
|
|
if (isInside)
|
|
{
|
|
Dragging = true;
|
|
DraggedBySlider = SliderRect.isPointInside(p);
|
|
TrayClick = !DraggedBySlider;
|
|
DesiredPos = getPosFromMousePos(p);
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
case EMIE_LMOUSE_LEFT_UP:
|
|
case EMIE_MOUSE_MOVED:
|
|
{
|
|
if ( !event.MouseInput.isLeftPressed () )
|
|
Dragging = false;
|
|
|
|
if ( !Dragging )
|
|
{
|
|
if ( event.MouseInput.Event == EMIE_MOUSE_MOVED )
|
|
break;
|
|
return isInside;
|
|
}
|
|
|
|
if ( event.MouseInput.Event == EMIE_LMOUSE_LEFT_UP )
|
|
Dragging = false;
|
|
|
|
const s32 newPos = getPosFromMousePos(p);
|
|
const s32 oldPos = Pos;
|
|
|
|
if (!DraggedBySlider)
|
|
{
|
|
if ( isInside )
|
|
{
|
|
DraggedBySlider = SliderRect.isPointInside(p);
|
|
TrayClick = !DraggedBySlider;
|
|
}
|
|
|
|
if (DraggedBySlider)
|
|
{
|
|
setPos(newPos);
|
|
}
|
|
else
|
|
{
|
|
TrayClick = false;
|
|
if (event.MouseInput.Event == EMIE_MOUSE_MOVED)
|
|
return isInside;
|
|
}
|
|
}
|
|
|
|
if (DraggedBySlider)
|
|
{
|
|
setPos(newPos);
|
|
}
|
|
else
|
|
{
|
|
DesiredPos = newPos;
|
|
}
|
|
|
|
if (Pos != oldPos && Parent)
|
|
{
|
|
SEvent newEvent;
|
|
newEvent.EventType = EET_GUI_EVENT;
|
|
newEvent.GUIEvent.Caller = this;
|
|
newEvent.GUIEvent.Element = 0;
|
|
newEvent.GUIEvent.EventType = EGET_SCROLL_BAR_CHANGED;
|
|
Parent->OnEvent(newEvent);
|
|
}
|
|
return isInside;
|
|
} break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
} break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return IGUIElement::OnEvent(event);
|
|
}
|
|
|
|
void CGUIScrollBar::OnPostRender(u32 timeMs)
|
|
{
|
|
if (Dragging && !DraggedBySlider && TrayClick && timeMs > LastChange + 200)
|
|
{
|
|
LastChange = timeMs;
|
|
|
|
const s32 oldPos = Pos;
|
|
|
|
if (DesiredPos >= Pos + LargeStep)
|
|
setPos(Pos + LargeStep);
|
|
else
|
|
if (DesiredPos <= Pos - LargeStep)
|
|
setPos(Pos - LargeStep);
|
|
else
|
|
if (DesiredPos >= Pos - LargeStep && DesiredPos <= Pos + LargeStep)
|
|
setPos(DesiredPos);
|
|
|
|
if (Pos != oldPos && Parent)
|
|
{
|
|
SEvent newEvent;
|
|
newEvent.EventType = EET_GUI_EVENT;
|
|
newEvent.GUIEvent.Caller = this;
|
|
newEvent.GUIEvent.Element = 0;
|
|
newEvent.GUIEvent.EventType = EGET_SCROLL_BAR_CHANGED;
|
|
Parent->OnEvent(newEvent);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
//! draws the element and its children
|
|
void CGUIScrollBar::draw()
|
|
{
|
|
if (!IsVisible)
|
|
return;
|
|
|
|
IGUISkin* skin = Environment->getSkin();
|
|
if (!skin)
|
|
return;
|
|
|
|
|
|
video::SColor iconColor = skin->getColor(isEnabled() ? EGDC_WINDOW_SYMBOL : EGDC_GRAY_WINDOW_SYMBOL);
|
|
if ( iconColor != CurrentIconColor )
|
|
{
|
|
refreshControls();
|
|
}
|
|
|
|
|
|
SliderRect = AbsoluteRect;
|
|
|
|
// draws the background
|
|
skin->draw2DRectangle(this, skin->getColor(EGDC_SCROLLBAR), SliderRect, &AbsoluteClippingRect);
|
|
|
|
if ( core::isnotzero ( range() ) )
|
|
{
|
|
// recalculate slider rectangle
|
|
if (Horizontal)
|
|
{
|
|
SliderRect.UpperLeftCorner.X = AbsoluteRect.UpperLeftCorner.X + DrawPos + RelativeRect.getHeight() - DrawHeight/2;
|
|
SliderRect.LowerRightCorner.X = SliderRect.UpperLeftCorner.X + DrawHeight;
|
|
}
|
|
else
|
|
{
|
|
SliderRect.UpperLeftCorner.Y = AbsoluteRect.UpperLeftCorner.Y + DrawPos + RelativeRect.getWidth() - DrawHeight/2;
|
|
SliderRect.LowerRightCorner.Y = SliderRect.UpperLeftCorner.Y + DrawHeight;
|
|
}
|
|
|
|
skin->draw3DButtonPaneStandard(this, SliderRect, &AbsoluteClippingRect);
|
|
}
|
|
|
|
// draw buttons
|
|
IGUIElement::draw();
|
|
}
|
|
|
|
|
|
void CGUIScrollBar::updateAbsolutePosition()
|
|
{
|
|
IGUIElement::updateAbsolutePosition();
|
|
// todo: properly resize
|
|
refreshControls();
|
|
setPos ( Pos );
|
|
}
|
|
|
|
//!
|
|
s32 CGUIScrollBar::getPosFromMousePos(const core::position2di &pos) const
|
|
{
|
|
f32 w, p;
|
|
if (Horizontal)
|
|
{
|
|
w = RelativeRect.getWidth() - f32(RelativeRect.getHeight())*3.0f;
|
|
p = pos.X - AbsoluteRect.UpperLeftCorner.X - RelativeRect.getHeight()*1.5f;
|
|
}
|
|
else
|
|
{
|
|
w = RelativeRect.getHeight() - f32(RelativeRect.getWidth())*3.0f;
|
|
p = pos.Y - AbsoluteRect.UpperLeftCorner.Y - RelativeRect.getWidth()*1.5f;
|
|
}
|
|
return (s32) ( p/w * range() ) + Min;
|
|
}
|
|
|
|
|
|
//! sets the position of the scrollbar
|
|
void CGUIScrollBar::setPos(s32 pos)
|
|
{
|
|
Pos = core::s32_clamp ( pos, Min, Max );
|
|
|
|
if ( core::isnotzero ( range() ) )
|
|
{
|
|
if (Horizontal)
|
|
{
|
|
f32 f = (RelativeRect.getWidth() - ((f32)RelativeRect.getHeight()*3.0f)) / range();
|
|
DrawPos = (s32)( ( ( Pos - Min ) * f) + ((f32)RelativeRect.getHeight() * 0.5f));
|
|
DrawHeight = RelativeRect.getHeight();
|
|
}
|
|
else
|
|
{
|
|
f32 f = (RelativeRect.getHeight() - ((f32)RelativeRect.getWidth()*3.0f)) / range();
|
|
|
|
DrawPos = (s32)( ( ( Pos - Min ) * f) + ((f32)RelativeRect.getWidth() * 0.5f));
|
|
DrawHeight = RelativeRect.getWidth();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//! gets the small step value
|
|
s32 CGUIScrollBar::getSmallStep() const
|
|
{
|
|
return SmallStep;
|
|
}
|
|
|
|
|
|
//! sets the small step value
|
|
void CGUIScrollBar::setSmallStep(s32 step)
|
|
{
|
|
if (step > 0)
|
|
SmallStep = step;
|
|
else
|
|
SmallStep = 10;
|
|
}
|
|
|
|
|
|
//! gets the small step value
|
|
s32 CGUIScrollBar::getLargeStep() const
|
|
{
|
|
return LargeStep;
|
|
}
|
|
|
|
|
|
//! sets the small step value
|
|
void CGUIScrollBar::setLargeStep(s32 step)
|
|
{
|
|
if (step > 0)
|
|
LargeStep = step;
|
|
else
|
|
LargeStep = 50;
|
|
}
|
|
|
|
|
|
//! gets the maximum value of the scrollbar.
|
|
s32 CGUIScrollBar::getMax() const
|
|
{
|
|
return Max;
|
|
}
|
|
|
|
|
|
//! sets the maximum value of the scrollbar.
|
|
void CGUIScrollBar::setMax(s32 max)
|
|
{
|
|
Max = max;
|
|
if ( Min > Max )
|
|
Min = Max;
|
|
|
|
bool enable = core::isnotzero ( range() );
|
|
UpButton->setEnabled(enable);
|
|
DownButton->setEnabled(enable);
|
|
setPos(Pos);
|
|
}
|
|
|
|
//! gets the minimum value of the scrollbar.
|
|
s32 CGUIScrollBar::getMin() const
|
|
{
|
|
return Min;
|
|
}
|
|
|
|
|
|
//! sets the minimum value of the scrollbar.
|
|
void CGUIScrollBar::setMin(s32 min)
|
|
{
|
|
Min = min;
|
|
if ( Max < Min )
|
|
Max = Min;
|
|
|
|
|
|
bool enable = core::isnotzero ( range() );
|
|
UpButton->setEnabled(enable);
|
|
DownButton->setEnabled(enable);
|
|
setPos(Pos);
|
|
}
|
|
|
|
|
|
//! gets the current position of the scrollbar
|
|
s32 CGUIScrollBar::getPos() const
|
|
{
|
|
return Pos;
|
|
}
|
|
|
|
|
|
//! refreshes the position and text on child buttons
|
|
void CGUIScrollBar::refreshControls()
|
|
{
|
|
CurrentIconColor = video::SColor(255,255,255,255);
|
|
|
|
IGUISkin* skin = Environment->getSkin();
|
|
IGUISpriteBank* sprites = 0;
|
|
|
|
if (skin)
|
|
{
|
|
sprites = skin->getSpriteBank();
|
|
CurrentIconColor = skin->getColor(isEnabled() ? EGDC_WINDOW_SYMBOL : EGDC_GRAY_WINDOW_SYMBOL);
|
|
}
|
|
|
|
if (Horizontal)
|
|
{
|
|
const s32 h = RelativeRect.getHeight();
|
|
const s32 w = (h < RelativeRect.getWidth() / 2) ? h : RelativeRect.getWidth() / 2;
|
|
if (!UpButton)
|
|
{
|
|
UpButton = new CGUIButton(Environment, this, -1, core::rect<s32>(0,0, w, h), NoClip);
|
|
UpButton->setSubElement(true);
|
|
UpButton->setTabStop(false);
|
|
}
|
|
if (sprites)
|
|
{
|
|
UpButton->setSpriteBank(sprites);
|
|
UpButton->setSprite(EGBS_BUTTON_UP, skin->getIcon(EGDI_CURSOR_LEFT), CurrentIconColor);
|
|
UpButton->setSprite(EGBS_BUTTON_DOWN, skin->getIcon(EGDI_CURSOR_LEFT), CurrentIconColor);
|
|
}
|
|
UpButton->setRelativePosition(core::rect<s32>(0,0, w, h));
|
|
UpButton->setAlignment(EGUIA_UPPERLEFT, EGUIA_UPPERLEFT, EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT);
|
|
if (!DownButton)
|
|
{
|
|
DownButton = new CGUIButton(Environment, this, -1, core::rect<s32>(RelativeRect.getWidth()-w, 0, RelativeRect.getWidth(), h), NoClip);
|
|
DownButton->setSubElement(true);
|
|
DownButton->setTabStop(false);
|
|
}
|
|
if (sprites)
|
|
{
|
|
DownButton->setSpriteBank(sprites);
|
|
DownButton->setSprite(EGBS_BUTTON_UP, skin->getIcon(EGDI_CURSOR_RIGHT), CurrentIconColor);
|
|
DownButton->setSprite(EGBS_BUTTON_DOWN, skin->getIcon(EGDI_CURSOR_RIGHT), CurrentIconColor);
|
|
}
|
|
DownButton->setRelativePosition(core::rect<s32>(RelativeRect.getWidth()-w, 0, RelativeRect.getWidth(), h));
|
|
DownButton->setAlignment(EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT);
|
|
}
|
|
else
|
|
{
|
|
const s32 w = RelativeRect.getWidth();
|
|
const s32 h = (w < RelativeRect.getHeight() / 2) ? w : RelativeRect.getHeight() / 2;
|
|
if (!UpButton)
|
|
{
|
|
UpButton = new CGUIButton(Environment, this, -1, core::rect<s32>(0,0, w, h), NoClip);
|
|
UpButton->setSubElement(true);
|
|
UpButton->setTabStop(false);
|
|
}
|
|
if (sprites)
|
|
{
|
|
UpButton->setSpriteBank(sprites);
|
|
UpButton->setSprite(EGBS_BUTTON_UP, skin->getIcon(EGDI_CURSOR_UP), CurrentIconColor);
|
|
UpButton->setSprite(EGBS_BUTTON_DOWN, skin->getIcon(EGDI_CURSOR_UP), CurrentIconColor);
|
|
}
|
|
UpButton->setRelativePosition(core::rect<s32>(0,0, w, h));
|
|
UpButton->setAlignment(EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT, EGUIA_UPPERLEFT, EGUIA_UPPERLEFT);
|
|
if (!DownButton)
|
|
{
|
|
DownButton = new CGUIButton(Environment, this, -1, core::rect<s32>(0,RelativeRect.getHeight()-h, w, RelativeRect.getHeight()), NoClip);
|
|
DownButton->setSubElement(true);
|
|
DownButton->setTabStop(false);
|
|
}
|
|
if (sprites)
|
|
{
|
|
DownButton->setSpriteBank(sprites);
|
|
DownButton->setSprite(EGBS_BUTTON_UP, skin->getIcon(EGDI_CURSOR_DOWN), CurrentIconColor);
|
|
DownButton->setSprite(EGBS_BUTTON_DOWN, skin->getIcon(EGDI_CURSOR_DOWN), CurrentIconColor);
|
|
}
|
|
DownButton->setRelativePosition(core::rect<s32>(0,RelativeRect.getHeight()-h, w, RelativeRect.getHeight()));
|
|
DownButton->setAlignment(EGUIA_UPPERLEFT, EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT, EGUIA_LOWERRIGHT);
|
|
}
|
|
}
|
|
|
|
|
|
//! Writes attributes of the element.
|
|
void CGUIScrollBar::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const
|
|
{
|
|
IGUIScrollBar::serializeAttributes(out,options);
|
|
|
|
out->addBool("Horizontal", Horizontal);
|
|
out->addInt ("Value", Pos);
|
|
out->addInt ("Min", Min);
|
|
out->addInt ("Max", Max);
|
|
out->addInt ("SmallStep", SmallStep);
|
|
out->addInt ("LargeStep", LargeStep);
|
|
// CurrentIconColor - not serialized as continuously updated
|
|
}
|
|
|
|
|
|
//! Reads attributes of the element
|
|
void CGUIScrollBar::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0)
|
|
{
|
|
IGUIScrollBar::deserializeAttributes(in,options);
|
|
|
|
Horizontal = in->getAttributeAsBool("Horizontal", Horizontal);
|
|
setMin(in->getAttributeAsInt("Min", Min));
|
|
setMax(in->getAttributeAsInt("Max", Max));
|
|
setPos(in->getAttributeAsInt("Value", Pos));
|
|
setSmallStep(in->getAttributeAsInt("SmallStep", SmallStep));
|
|
setLargeStep(in->getAttributeAsInt("LargeStep", LargeStep));
|
|
// CurrentIconColor - not serialized as continuously updated
|
|
|
|
refreshControls();
|
|
}
|
|
|
|
|
|
} // end namespace gui
|
|
} // end namespace irr
|
|
|
|
#endif // _IRR_COMPILE_WITH_GUI_
|
|
|