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8190293f8b
Remove workaround in 3d07327837 / D2136, the pointer from IGUIObject to
IGUITextOwner that avoided the dynamic_cast.
Have the GUIObject implementing class take responsibility of calling the
virtual methods in the base classes.
Leaves the code in a clean state that can serve as an example for new
GUI object classes, such as D1346, refs #4683.
Differential Revision: https://code.wildfiregames.com/D2325
Comments By: Vladislav on IRC 2019-07-30, 2019-08-22, 2019-09-20-23
Tested on: clang 8.0.1, Jenkins
This was SVN commit r23020.
139 lines
3.3 KiB
C++
139 lines
3.3 KiB
C++
/* Copyright (C) 2019 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 "CSlider.h"
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#include "gui/CGUI.h"
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#include "maths/MathUtil.h"
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CSlider::CSlider(CGUI& pGUI)
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: IGUIObject(pGUI),
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m_IsPressed(),
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m_ButtonSide(),
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m_CellID(),
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m_MaxValue(),
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m_MinValue(),
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m_Sprite(),
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m_SpriteBar(),
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m_Value()
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{
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RegisterSetting("button_width", m_ButtonSide);
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RegisterSetting("cell_id", m_CellID);
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RegisterSetting("max_value", m_MaxValue);
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RegisterSetting("min_value", m_MinValue);
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RegisterSetting("sprite", m_Sprite);
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RegisterSetting("sprite_bar", m_SpriteBar);
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RegisterSetting("value", m_Value);
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m_Value = Clamp(m_Value, m_MinValue, m_MaxValue);
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}
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CSlider::~CSlider()
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{
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}
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float CSlider::GetSliderRatio() const
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{
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return (m_MaxValue - m_MinValue) / (m_CachedActualSize.GetWidth() - m_ButtonSide);
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}
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void CSlider::IncrementallyChangeValue(const float difference)
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{
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m_Value = Clamp(m_Value + difference, m_MinValue, m_MaxValue);
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UpdateValue();
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}
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void CSlider::HandleMessage(SGUIMessage& Message)
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{
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IGUIObject::HandleMessage(Message);
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switch (Message.type)
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{
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case GUIM_SETTINGS_UPDATED:
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{
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m_Value = Clamp(m_Value, m_MinValue, m_MaxValue);
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break;
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}
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case GUIM_MOUSE_WHEEL_DOWN:
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{
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if (m_IsPressed)
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break;
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IncrementallyChangeValue(-0.01f);
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break;
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}
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case GUIM_MOUSE_WHEEL_UP:
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{
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if (m_IsPressed)
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break;
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IncrementallyChangeValue(0.01f);
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break;
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}
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case GUIM_MOUSE_PRESS_LEFT:
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{
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m_Mouse = m_pGUI.GetMousePos();
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m_IsPressed = true;
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IncrementallyChangeValue((m_Mouse.x - GetButtonRect().CenterPoint().x) * GetSliderRatio());
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break;
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}
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case GUIM_MOUSE_RELEASE_LEFT:
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{
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m_IsPressed = false;
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break;
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}
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case GUIM_MOUSE_MOTION:
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{
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if (!IsMouseOver())
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m_IsPressed = false;
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if (m_IsPressed)
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{
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float difference = float(m_pGUI.GetMousePos().x - m_Mouse.x) * GetSliderRatio();
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m_Mouse = m_pGUI.GetMousePos();
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IncrementallyChangeValue(difference);
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}
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break;
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}
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default:
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break;
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}
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}
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void CSlider::Draw()
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{
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CRect slider_line(m_CachedActualSize);
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slider_line.left += m_ButtonSide / 2.0f;
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slider_line.right -= m_ButtonSide / 2.0f;
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float bz = GetBufferedZ();
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m_pGUI.DrawSprite(m_SpriteBar, m_CellID, bz, slider_line);
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m_pGUI.DrawSprite(m_Sprite, m_CellID, bz, GetButtonRect());
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}
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void CSlider::UpdateValue()
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{
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SetSetting<float>("value", m_Value, true);
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ScriptEvent("valuechange");
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}
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CRect CSlider::GetButtonRect() const
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{
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float ratio = m_MaxValue > m_MinValue ? (m_Value - m_MinValue) / (m_MaxValue - m_MinValue) : 0.0f;
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float x = m_CachedActualSize.left + ratio * (m_CachedActualSize.GetWidth() - m_ButtonSide);
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float y = m_CachedActualSize.top + (m_CachedActualSize.GetHeight() - m_ButtonSide) / 2.0;
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return CRect(x, y, x + m_ButtonSide, y + m_ButtonSide);
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}
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