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/* Copyright (C) 2016 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "CGUIScrollBarVertical.h"
#include "GUI.h"
#include "ps/CLogger.h"
CGUIScrollBarVertical::CGUIScrollBarVertical()
{
}
CGUIScrollBarVertical::~CGUIScrollBarVertical()
{
}
void CGUIScrollBarVertical::SetPosFromMousePos(const CPos& mouse)
{
if (!GetStyle())
return;
/**
* Calculate the position for the top of the item being scrolled
*/
float emptyBackground = m_Length - m_BarSize;
if (GetStyle()->m_UseEdgeButtons)
emptyBackground -= GetStyle()->m_Width * 2;
m_Pos = m_PosWhenPressed + GetMaxPos() * (mouse.y - m_BarPressedAtPos.y) / emptyBackground;
}
void CGUIScrollBarVertical::Draw()
{
if (!GetStyle())
{
LOGWARNING("Attempt to draw scrollbar without a style.");
return;
}
if (GetGUI() && IsVisible())
{
CRect outline = GetOuterRect();
GetGUI()->DrawSprite(
GetStyle()->m_SpriteBackVertical,
0,
m_Z+0.1f,
CRect(
outline.left,
outline.top + (GetStyle()->m_UseEdgeButtons ? GetStyle()->m_Width : 0),
outline.right,
outline.bottom - (GetStyle()->m_UseEdgeButtons ? GetStyle()->m_Width : 0)
)
);
if (GetStyle()->m_UseEdgeButtons)
{
const CGUISpriteInstance* button_top;
const CGUISpriteInstance* button_bottom;
if (m_ButtonMinusHovered)
{
if (m_ButtonMinusPressed)
button_top = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonTopPressed, GetStyle()->m_SpriteButtonTop);
else
button_top = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonTopOver, GetStyle()->m_SpriteButtonTop);
}
else
button_top = &GetStyle()->m_SpriteButtonTop;
if (m_ButtonPlusHovered)
{
if (m_ButtonPlusPressed)
button_bottom = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonBottomPressed, GetStyle()->m_SpriteButtonBottom);
else
button_bottom = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonBottomOver, GetStyle()->m_SpriteButtonBottom);
}
else
button_bottom = &GetStyle()->m_SpriteButtonBottom;
GetGUI()->DrawSprite(
*button_top,
0,
m_Z+0.2f,
CRect(
outline.left,
outline.top,
outline.right,
outline.top+GetStyle()->m_Width
)
);
GetGUI()->DrawSprite(
*button_bottom,
0,
m_Z+0.2f,
CRect(
outline.left,
outline.bottom-GetStyle()->m_Width,
outline.right,
outline.bottom
)
);
}
GetGUI()->DrawSprite(
GetStyle()->m_SpriteBarVertical,
0,
m_Z + 0.2f,
GetBarRect()
);
}
}
void CGUIScrollBarVertical::HandleMessage(SGUIMessage& Message)
{
IGUIScrollBar::HandleMessage(Message);
}
CRect CGUIScrollBarVertical::GetBarRect() const
{
CRect ret;
if (!GetStyle())
return ret;
// Get from where the scroll area begins to where it ends
float from = m_Y;
float to = m_Y + m_Length - m_BarSize;
if (GetStyle()->m_UseEdgeButtons)
{
from += GetStyle()->m_Width;
to -= GetStyle()->m_Width;
}
ret.top = from + (to - from) * m_Pos / GetMaxPos();
ret.bottom = ret.top + m_BarSize;
ret.right = m_X + (m_RightAligned ? 0 : GetStyle()->m_Width);
ret.left = ret.right - GetStyle()->m_Width;
return ret;
}
CRect CGUIScrollBarVertical::GetOuterRect() const
{
CRect ret;
if (!GetStyle())
return ret;
ret.top = m_Y;
ret.bottom = m_Y+m_Length;
ret.right = m_X + (m_RightAligned ? 0 : GetStyle()->m_Width);
ret.left = ret.right - GetStyle()->m_Width;
return ret;
}
bool CGUIScrollBarVertical::HoveringButtonMinus(const CPos& mouse)
{
if (!GetStyle())
return false;
float StartX = m_RightAligned ? m_X-GetStyle()->m_Width : m_X;
return mouse.x >= StartX &&
mouse.x <= StartX + GetStyle()->m_Width &&
mouse.y >= m_Y &&
mouse.y <= m_Y + GetStyle()->m_Width;
}
bool CGUIScrollBarVertical::HoveringButtonPlus(const CPos& mouse)
{
if (!GetStyle())
return false;
float StartX = m_RightAligned ? m_X-GetStyle()->m_Width : m_X;
return mouse.x > StartX &&
mouse.x < StartX + GetStyle()->m_Width &&
mouse.y > m_Y + m_Length - GetStyle()->m_Width &&
mouse.y < m_Y + m_Length;
}
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