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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "System/Input/InputHandler.h"
#include "Gui.h"
#include <boost/bind.hpp>
#include <SDL_events.h>
#include "GuiElement.h"
#include "Rendering/GL/myGL.h"
#include "System/Log/ILog.h"
namespace agui
{
Gui::Gui():
inputConBlock(inputCon)
{
inputCon = input.AddHandler(boost::bind(&Gui::HandleEvent, this, _1));
}
void Gui::Draw()
{
Clean();
glDisable(GL_TEXTURE_2D);
glDisable(GL_ALPHA_TEST);
glEnable(GL_BLEND);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0, 1, 0, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
for (ElList::reverse_iterator it = elements.rbegin(); it != elements.rend(); ++it) {
(*it).element->Draw();
}
}
void Gui::Clean() {
for (ElList::iterator it = toBeAdded.begin(); it != toBeAdded.end(); ++it)
{
bool duplicate = false;
for (ElList::iterator elIt = elements.begin(); elIt != elements.end(); ++elIt)
{
if (it->element == elIt->element)
{
LOG_L(L_DEBUG, "Gui::AddElement: skipping duplicated object");
duplicate = true;
break;
}
}
if (!duplicate)
{
if (it->asBackground)
elements.push_back(*it);
else
elements.push_front(*it);
}
}
toBeAdded.clear();
for (ElList::iterator it = toBeRemoved.begin(); it != toBeRemoved.end(); ++it)
{
for (ElList::iterator elIt = elements.begin(); elIt != elements.end(); ++elIt)
{
if (it->element == elIt->element)
{
delete (elIt->element);
elements.erase(elIt);
break;
}
}
}
toBeRemoved.clear();
}
Gui::~Gui() {
Clean();
}
void Gui::AddElement(GuiElement* elem, bool asBackground)
{
if (elements.empty()) {
inputConBlock.unblock();
}
toBeAdded.push_back(GuiItem(elem,asBackground));
}
void Gui::RmElement(GuiElement* elem)
{
// has to be delayed, otherwise deleting a button during a callback would segfault
for (ElList::iterator it = elements.begin(); it != elements.end(); ++it) {
if ((*it).element == elem) {
toBeRemoved.push_back(GuiItem(elem,true));
break;
}
}
if (elements.empty()) {
inputConBlock.block();
}
}
void Gui::UpdateScreenGeometry(int screenx, int screeny, int screenOffsetX, int screenOffsetY)
{
GuiElement::UpdateDisplayGeo(screenx, screeny, screenOffsetX, screenOffsetY);
}
bool Gui::MouseOverElement(const GuiElement* elem, int x, int y) const
{
for (ElList::const_iterator it = elements.begin(); it != elements.end(); ++it)
{
if (it->element->MouseOver(x, y))
{
if (it->element == elem)
return true;
else
return false;
}
}
return false;
}
bool Gui::HandleEvent(const SDL_Event& ev)
{
ElList::iterator handler = elements.end();
for (ElList::iterator it = elements.begin(); it != elements.end(); ++it)
{
if (it->element->HandleEvent(ev))
{
handler = it;
break;
}
}
if (handler != elements.end() && !handler->asBackground)
{
elements.push_front(*handler);
elements.erase(handler);
}
return false;
}
Gui* gui = NULL;
void InitGui()
{
if (gui == NULL)
gui = new Gui();
}
void FreeGui()
{
if (gui != NULL) {
delete gui;
gui = NULL;
}
}
}
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