mirror of
https://github.com/Maschell/libgui.git
synced 2024-11-30 16:44:20 +01:00
344 lines
7.6 KiB
C++
344 lines
7.6 KiB
C++
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/****************************************************************************
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* Copyright (C) 2015 Dimok
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*
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* This program 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 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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#include "GuiElement.h"
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//! TODO remove this!
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static s32 screenwidth = 1280;
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static s32 screenheight = 720;
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/**
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* Constructor for the Object class.
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*/
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GuiElement::GuiElement()
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{
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xoffset = 0.0f;
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yoffset = 0.0f;
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zoffset = 0.0f;
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width = 0.0f;
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height = 0.0f;
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alpha = 1.0f;
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scaleX = 1.0f;
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scaleY = 1.0f;
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scaleZ = 1.0f;
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for(s32 i = 0; i < 4; i++)
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state[i] = STATE_DEFAULT;
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stateChan = -1;
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parentElement = NULL;
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rumble = true;
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selectable = false;
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clickable = false;
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holdable = false;
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drawOverOnlyWhenSelected = false;
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visible = true;
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yoffsetDyn = 0;
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xoffsetDyn = 0;
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alphaDyn = -1;
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scaleDyn = 1;
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effects = EFFECT_NONE;
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effectAmount = 0;
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effectTarget = 0;
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effectsOver = EFFECT_NONE;
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effectAmountOver = 0;
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effectTargetOver = 0;
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angle = 0.0f;
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// default alignment - align to top left
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alignment = (ALIGN_CENTER | ALIGN_MIDDLE);
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}
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/**
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* Get the left position of the GuiElement.
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* @see SetLeft()
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* @return Left position in pixel.
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*/
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f32 GuiElement::getLeft()
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{
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f32 pWidth = 0;
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f32 pLeft = 0;
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f32 pScaleX = 1.0f;
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if(parentElement)
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{
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pWidth = parentElement->getWidth();
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pLeft = parentElement->getLeft();
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pScaleX = parentElement->getScaleX();
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}
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pLeft += xoffsetDyn;
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f32 x = pLeft;
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//! TODO: the conversion from int to float and back to int is bad for performance, change that
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if(alignment & ALIGN_CENTER)
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{
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x = pLeft + pWidth * 0.5f * pScaleX - width * 0.5f * getScaleX();
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}
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else if(alignment & ALIGN_RIGHT)
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{
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x = pLeft + pWidth * pScaleX - width * getScaleX();
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}
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return x + xoffset;
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}
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/**
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* Get the top position of the GuiElement.
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* @see SetTop()
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* @return Top position in pixel.
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*/
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f32 GuiElement::getTop()
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{
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f32 pHeight = 0;
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f32 pTop = 0;
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f32 pScaleY = 1.0f;
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if(parentElement)
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{
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pHeight = parentElement->getHeight();
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pTop = parentElement->getTop();
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pScaleY = parentElement->getScaleY();
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}
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pTop += yoffsetDyn;
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f32 y = pTop;
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//! TODO: the conversion from int to float and back to int is bad for performance, change that
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if(alignment & ALIGN_MIDDLE)
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{
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y = pTop + pHeight * 0.5f * pScaleY - getHeight() * 0.5f * getScaleY();
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}
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else if(alignment & ALIGN_BOTTOM)
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{
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y = pTop + pHeight * pScaleY - getHeight() * getScaleY();
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}
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return y + yoffset;
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}
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void GuiElement::setEffect(s32 eff, s32 amount, s32 target)
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{
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if(eff & EFFECT_SLIDE_IN)
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{
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// these calculations overcompensate a little
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if(eff & EFFECT_SLIDE_TOP)
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{
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if(eff & EFFECT_SLIDE_FROM)
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yoffsetDyn = (s32) -getHeight()*scaleY;
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else
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yoffsetDyn = -screenheight;
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}
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else if(eff & EFFECT_SLIDE_LEFT)
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{
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if(eff & EFFECT_SLIDE_FROM)
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xoffsetDyn = (s32) -getWidth()*scaleX;
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else
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xoffsetDyn = -screenwidth;
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}
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else if(eff & EFFECT_SLIDE_BOTTOM)
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{
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if(eff & EFFECT_SLIDE_FROM)
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yoffsetDyn = (s32) getHeight()*scaleY;
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else
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yoffsetDyn = screenheight;
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}
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else if(eff & EFFECT_SLIDE_RIGHT)
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{
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if(eff & EFFECT_SLIDE_FROM)
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xoffsetDyn = (s32) getWidth()*scaleX;
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else
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xoffsetDyn = screenwidth;
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}
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}
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if((eff & EFFECT_FADE) && amount > 0)
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{
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alphaDyn = 0;
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}
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else if((eff & EFFECT_FADE) && amount < 0)
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{
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alphaDyn = alpha;
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}
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effects |= eff;
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effectAmount = amount;
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effectTarget = target;
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}
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//!Sets an effect to be enabled on wiimote cursor over
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//!\param e Effect to enable
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//!\param a Amount of the effect (usage varies on effect)
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//!\param t Target amount of the effect (usage varies on effect)
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void GuiElement::setEffectOnOver(s32 e, s32 a, s32 t)
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{
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effectsOver |= e;
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effectAmountOver = a;
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effectTargetOver = t;
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}
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void GuiElement::resetEffects()
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{
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yoffsetDyn = 0;
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xoffsetDyn = 0;
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alphaDyn = -1;
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scaleDyn = 1;
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effects = EFFECT_NONE;
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effectAmount = 0;
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effectTarget = 0;
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effectsOver = EFFECT_NONE;
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effectAmountOver = 0;
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effectTargetOver = 0;
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}
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void GuiElement::updateEffects()
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{
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if(!this->isVisible() && parentElement)
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return;
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if(effects & (EFFECT_SLIDE_IN | EFFECT_SLIDE_OUT | EFFECT_SLIDE_FROM))
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{
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if(effects & EFFECT_SLIDE_IN)
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{
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if(effects & EFFECT_SLIDE_LEFT)
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{
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xoffsetDyn += effectAmount;
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if(xoffsetDyn >= 0)
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{
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xoffsetDyn = 0;
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effects = 0;
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effectFinished(this);
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}
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}
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else if(effects & EFFECT_SLIDE_RIGHT)
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{
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xoffsetDyn -= effectAmount;
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if(xoffsetDyn <= 0)
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{
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xoffsetDyn = 0;
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effects = 0;
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effectFinished(this);
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}
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}
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else if(effects & EFFECT_SLIDE_TOP)
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{
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yoffsetDyn += effectAmount;
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if(yoffsetDyn >= 0)
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{
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yoffsetDyn = 0;
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effects = 0;
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effectFinished(this);
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}
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}
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else if(effects & EFFECT_SLIDE_BOTTOM)
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{
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yoffsetDyn -= effectAmount;
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if(yoffsetDyn <= 0)
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{
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yoffsetDyn = 0;
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effects = 0;
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effectFinished(this);
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}
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}
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}
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else
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{
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if(effects & EFFECT_SLIDE_LEFT)
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{
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xoffsetDyn -= effectAmount;
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if(xoffsetDyn <= -screenwidth) {
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effects = 0; // shut off effect
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effectFinished(this);
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}
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else if((effects & EFFECT_SLIDE_FROM) && xoffsetDyn <= -getWidth()) {
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effects = 0; // shut off effect
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effectFinished(this);
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}
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}
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else if(effects & EFFECT_SLIDE_RIGHT)
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{
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xoffsetDyn += effectAmount;
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if(xoffsetDyn >= screenwidth) {
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effects = 0; // shut off effect
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effectFinished(this);
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}
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else if((effects & EFFECT_SLIDE_FROM) && xoffsetDyn >= getWidth()*scaleX) {
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effects = 0; // shut off effect
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effectFinished(this);
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}
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}
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else if(effects & EFFECT_SLIDE_TOP)
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{
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yoffsetDyn -= effectAmount;
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if(yoffsetDyn <= -screenheight) {
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effects = 0; // shut off effect
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effectFinished(this);
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}
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else if((effects & EFFECT_SLIDE_FROM) && yoffsetDyn <= -getHeight()) {
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effects = 0; // shut off effect
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effectFinished(this);
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}
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}
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else if(effects & EFFECT_SLIDE_BOTTOM)
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{
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yoffsetDyn += effectAmount;
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if(yoffsetDyn >= screenheight) {
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effects = 0; // shut off effect
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effectFinished(this);
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}
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else if((effects & EFFECT_SLIDE_FROM) && yoffsetDyn >= getHeight()) {
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effects = 0; // shut off effect
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effectFinished(this);
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}
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}
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}
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}
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else if(effects & EFFECT_FADE)
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{
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alphaDyn += effectAmount * (1.0f / 255.0f);
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if(effectAmount < 0 && alphaDyn <= 0)
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{
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alphaDyn = 0;
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effects = 0; // shut off effect
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effectFinished(this);
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}
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else if(effectAmount > 0 && alphaDyn >= alpha)
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{
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alphaDyn = alpha;
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effects = 0; // shut off effect
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effectFinished(this);
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}
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}
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else if(effects & EFFECT_SCALE)
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{
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scaleDyn += effectAmount * 0.01f;
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if((effectAmount < 0 && scaleDyn <= (effectTarget * 0.01f))
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|| (effectAmount > 0 && scaleDyn >= (effectTarget * 0.01f)))
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{
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scaleDyn = effectTarget * 0.01f;
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effects = 0; // shut off effect
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effectFinished(this);
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}
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}
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}
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