mirror of
https://gitea.wildfiregames.com/0ad/0ad
synced 2026-06-16 05:13:58 -07:00
d3e56f0f57
Improves separation of concerns and makes the code less error prone,
since the IGUIObject classes can't break CGUI private members without
CGUIs help anymore.
This is achieved by making CGUI GetFocusedObject, UpdateObjects public,
by introducing public CGUI GetBaseObject, GetMousePos, GetMouseButtons,
HasStyle, GetStyle getters,
and by removing the pointless IGUIObject GetMousePos proxy.
Delete GetGUI() checks that are either always or never true following
2c47fbd66a.
Use const references instead of copies for some mouse positions.
Differential Revision: https://code.wildfiregames.com/D2166
This was SVN commit r22641.
143 lines
3.9 KiB
C++
143 lines
3.9 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.h"
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#include "lib/ogl.h"
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#include "ps/CLogger.h"
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CSlider::CSlider(CGUI* pGUI)
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: IGUIObject(pGUI), m_IsPressed(false), m_ButtonSide(0)
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{
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AddSetting<float>("value");
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AddSetting<float>("min_value");
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AddSetting<float>("max_value");
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AddSetting<int>("cell_id");
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AddSetting<CGUISpriteInstance>("sprite");
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AddSetting<CGUISpriteInstance>("sprite_bar");
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AddSetting<float>("button_width");
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GUI<float>::GetSetting(this, "value", m_Value);
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GUI<float>::GetSetting(this, "min_value", m_MinValue);
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GUI<float>::GetSetting(this, "max_value", m_MaxValue);
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GUI<float>::GetSetting(this, "button_width", m_ButtonSide);
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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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switch (Message.type)
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{
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case GUIM_SETTINGS_UPDATED:
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{
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GUI<float>::GetSetting(this, "value", m_Value);
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GUI<float>::GetSetting(this, "min_value", m_MinValue);
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GUI<float>::GetSetting(this, "max_value", m_MaxValue);
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GUI<float>::GetSetting(this, "button_width", m_ButtonSide);
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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 (!MouseOver())
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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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CGUISpriteInstance* sprite;
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CGUISpriteInstance* sprite_button;
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int cell_id;
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GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite_bar", sprite);
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GUI<CGUISpriteInstance>::GetSettingPointer(this, "sprite", sprite_button);
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GUI<int>::GetSetting(this, "cell_id", cell_id);
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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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GetGUI()->DrawSprite(*sprite, cell_id, bz, slider_line);
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GetGUI()->DrawSprite(*sprite_button, cell_id, bz, GetButtonRect());
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}
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void CSlider::UpdateValue()
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{
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GUI<float>::SetSetting(this, "value", m_Value);
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ScriptEvent("valuechange");
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}
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CRect CSlider::GetButtonRect()
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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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