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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "GuiElement.h"
#include "Rendering/GL/myGL.h"
namespace agui
{
int GuiElement::screensize[2];
int GuiElement::screenoffset[2];
GuiElement::GuiElement(GuiElement* _parent) : parent(_parent), fixedSize(false), weight(1)
{
size[0] = size[1] = 0.0f;
pos[0] = pos[1] = 0.0f;
if (parent)
parent->AddChild(this);
}
GuiElement::~GuiElement()
{
for (ChildList::iterator it = children.begin(); it != children.end(); ++it)
{
delete *it;
}
}
void GuiElement::Draw()
{
DrawSelf();
for (ChildList::iterator it = children.begin(); it != children.end(); ++it)
{
(*it)->Draw();
}
}
bool GuiElement::HandleEvent(const SDL_Event& ev)
{
if (HandleEventSelf(ev))
return true;
for (ChildList::iterator it = children.begin(); it != children.end(); ++it)
{
if ((*it)->HandleEvent(ev))
return true;
}
return false;
}
bool GuiElement::MouseOver(int x, int y) const
{
float mouse[2] = {PixelToGlX(x), PixelToGlY(y)};
return (mouse[0] >= pos[0] && mouse[0] <= pos[0]+size[0]) && (mouse[1] >= pos[1] && mouse[1] <= pos[1]+size[1]);
}
bool GuiElement::MouseOver(float x, float y) const
{
return (x >= pos[0] && x <= pos[0]+size[0]) && (y >= pos[1] && y <= pos[1]+size[1]);
}
void GuiElement::UpdateDisplayGeo(int x, int y, int xOffset, int yOffset)
{
screensize[0] = x;
screensize[1] = y;
screenoffset[0] = xOffset;
screenoffset[1] = yOffset;
}
float GuiElement::PixelToGlX(int x)
{
return float(x - screenoffset[0])/float(screensize[0]);
}
float GuiElement::PixelToGlY(int y)
{
return 1.0f - float(y - screenoffset[1])/float(screensize[1]);
}
float GuiElement::GlToPixelX(float x)
{
return x*float(screensize[0]) + float(screenoffset[0]);
}
float GuiElement::GlToPixelY(float y)
{
return y*float(screensize[1]) + float(screenoffset[1]);
}
void GuiElement::AddChild(GuiElement* elem)
{
children.push_back(elem);
elem->SetPos(pos[0], pos[1]);
elem->SetSize(size[0], size[1]);
GeometryChange();
}
void GuiElement::SetPos(float x, float y)
{
pos[0] = x;
pos[1] = y;
GeometryChange();
}
void GuiElement::SetSize(float x, float y, bool fixed)
{
size[0] = x;
size[1] = y;
fixedSize = fixed;
GeometryChange();
}
void GuiElement::GeometryChange()
{
GeometryChangeSelf();
for (ChildList::iterator it = children.begin(); it != children.end(); ++it)
{
(*it)->GeometryChange();
}
}
float GuiElement::DefaultOpacity() const
{
return 0.8f;
}
void GuiElement::Move(float x, float y)
{
pos[0] += x;
pos[1] += y;
for (ChildList::iterator it = children.begin(); it != children.end(); ++it)
{
(*it)->Move(x, y);
}
}
void GuiElement::DrawBox(int how)
{
glBegin(how);
glVertex2f(pos[0], pos[1]);
glVertex2f(pos[0], pos[1]+size[1]);
glVertex2f(pos[0]+size[0], pos[1]+size[1]);
glVertex2f(pos[0]+size[0], pos[1]);
glEnd();
}
}
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