forked from 0ad/0ad
197 lines
4.9 KiB
C++
197 lines
4.9 KiB
C++
/* Copyright (C) 2015 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "CGUIScrollBarVertical.h"
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#include "GUI.h"
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#include "ps/CLogger.h"
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CGUIScrollBarVertical::CGUIScrollBarVertical()
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{
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}
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CGUIScrollBarVertical::~CGUIScrollBarVertical()
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{
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}
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void CGUIScrollBarVertical::SetPosFromMousePos(const CPos& mouse)
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{
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if (!GetStyle())
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return;
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/**
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* Calculate the position for the top of the item being scrolled
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*/
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float emptyBackground = m_Length - m_BarSize;
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if (GetStyle()->m_UseEdgeButtons)
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emptyBackground -= GetStyle()->m_Width * 2;
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m_Pos = m_PosWhenPressed + GetMaxPos() * (mouse.y - m_BarPressedAtPos.y) / emptyBackground;
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}
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void CGUIScrollBarVertical::Draw()
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{
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if (!GetStyle())
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{
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LOGWARNING("Attempt to draw scrollbar without a style.");
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return;
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}
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if (GetGUI() && IsVisible())
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{
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CRect outline = GetOuterRect();
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// Draw background
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GetGUI()->DrawSprite(GetStyle()->m_SpriteBackVertical,
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0,
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m_Z+0.1f,
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CRect(outline.left,
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outline.top+(GetStyle()->m_UseEdgeButtons?GetStyle()->m_Width:0),
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outline.right,
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outline.bottom-(GetStyle()->m_UseEdgeButtons?GetStyle()->m_Width:0))
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);
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if (GetStyle()->m_UseEdgeButtons)
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{
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// Get Appropriate sprites
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const CGUISpriteInstance* button_top;
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const CGUISpriteInstance* button_bottom;
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// figure out what sprite to use for top button
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if (m_ButtonMinusHovered)
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{
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if (m_ButtonMinusPressed)
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button_top = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonTopPressed, GetStyle()->m_SpriteButtonTop);
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else
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button_top = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonTopOver, GetStyle()->m_SpriteButtonTop);
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}
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else
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button_top = &GetStyle()->m_SpriteButtonTop;
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// figure out what sprite to use for bottom button
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if (m_ButtonPlusHovered)
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{
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if (m_ButtonPlusPressed)
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button_bottom = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonBottomPressed, GetStyle()->m_SpriteButtonBottom);
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else
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button_bottom = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonBottomOver, GetStyle()->m_SpriteButtonBottom);
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}
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else
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button_bottom = &GetStyle()->m_SpriteButtonBottom;
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// Draw top button
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GetGUI()->DrawSprite(*button_top,
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0,
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m_Z+0.2f,
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CRect(outline.left,
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outline.top,
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outline.right,
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outline.top+GetStyle()->m_Width)
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);
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// Draw bottom button
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GetGUI()->DrawSprite(*button_bottom,
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0,
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m_Z+0.2f,
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CRect(outline.left,
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outline.bottom-GetStyle()->m_Width,
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outline.right,
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outline.bottom)
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);
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}
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// Draw bar
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GetGUI()->DrawSprite(GetStyle()->m_SpriteBarVertical,
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0,
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m_Z + 0.2f,
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GetBarRect());
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}
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}
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void CGUIScrollBarVertical::HandleMessage(SGUIMessage& Message)
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{
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IGUIScrollBar::HandleMessage(Message);
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}
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CRect CGUIScrollBarVertical::GetBarRect() const
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{
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CRect ret;
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if (!GetStyle())
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return ret;
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// Get from where the scroll area begins to where it ends
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float from = m_Y;
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float to = m_Y + m_Length - m_BarSize;
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if (GetStyle()->m_UseEdgeButtons)
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{
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from += GetStyle()->m_Width;
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to -= GetStyle()->m_Width;
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}
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// Setup rectangle
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ret.top = from + (to - from) * (m_Pos / GetMaxPos());
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ret.bottom = ret.top + m_BarSize;
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ret.right = m_X + ((m_RightAligned)?(0.f):(GetStyle()->m_Width));
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ret.left = ret.right - GetStyle()->m_Width;
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return ret;
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}
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CRect CGUIScrollBarVertical::GetOuterRect() const
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{
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CRect ret;
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if (!GetStyle())
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return ret;
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ret.top = m_Y;
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ret.bottom = m_Y+m_Length;
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ret.right = m_X + ((m_RightAligned)?(0):(GetStyle()->m_Width));
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ret.left = ret.right - GetStyle()->m_Width;
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return ret;
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}
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bool CGUIScrollBarVertical::HoveringButtonMinus(const CPos& mouse)
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{
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if (!GetStyle())
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return false;
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float StartX = (m_RightAligned)?(m_X-GetStyle()->m_Width):(m_X);
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return (mouse.x >= StartX &&
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mouse.x <= StartX + GetStyle()->m_Width &&
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mouse.y >= m_Y &&
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mouse.y <= m_Y + GetStyle()->m_Width);
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}
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bool CGUIScrollBarVertical::HoveringButtonPlus(const CPos& mouse)
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{
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if (!GetStyle())
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return false;
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float StartX = (m_RightAligned)?(m_X-GetStyle()->m_Width):(m_X);
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return (mouse.x > StartX &&
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mouse.x < StartX + GetStyle()->m_Width &&
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mouse.y > m_Y + m_Length - GetStyle()->m_Width &&
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mouse.y < m_Y + m_Length);
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}
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