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GUIObject.cpp
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GUIObject.cpp
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/****************************************************************************
** Copyright (C) 2011 Luka Horvat <redreaper132 at gmail.com>
** Copyright (C) 2011 Edward Lii <edward_iii at myway.com>
** Copyright (C) 2011 O. Bahri Gordebak <gordebak at gmail.com>
**
**
** This file may be used under the terms of the GNU General Public
** License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
**
****************************************************************************/
#include "GUIObject.h"
#include <iostream>
using namespace std;
GUIObject *GUIObjectRoot=NULL;
struct GUIEvent{
GUIEventCallback *EventCallback;
std::string Name;
GUIObject* obj;
int nEventType;
};
std::vector<GUIEvent> GUIEventQueue;
void GUIObjectHandleEvents(){
if(GUIObjectRoot) GUIObjectRoot->handle_events();
for(unsigned int i=0;i<GUIEventQueue.size();i++){
if(GUIEventQueue[i].EventCallback){
GUIEventQueue[i].EventCallback->GUIEventCallback_OnEvent(GUIEventQueue[i].Name,GUIEventQueue[i].obj,GUIEventQueue[i].nEventType);
}
}
GUIEventQueue.clear();
}
GUIObject::~GUIObject(){
for(unsigned int i=0;i<ChildControls.size();i++){
delete ChildControls[i];
}
ChildControls.clear();
}
bool GUIObject::handle_events(int x,int y,bool enabled,bool visible,bool processed){
bool b=processed;
enabled=enabled && Enabled;
visible=visible && Visible;
x+=Left;
y+=Top;
//
switch(Type){
case GUIObjectButton:
State=0;
if(enabled&&visible){
int i,j,k;
k=SDL_GetMouseState(&i,&j);
if(i>=x&&i<x+Width&&j>=y&&j<y+Height){
State=1;
if(k&SDL_BUTTON(1)) State=2;
if(event.type==SDL_MOUSEBUTTONUP && event.button.button==SDL_BUTTON_LEFT && !b){
if(EventCallback){
GUIEvent e={EventCallback,Name,this,GUIEventClick};
GUIEventQueue.push_back(e);
}
b=true;
}
}
}
break;
case GUIObjectTextBox:
State=0;
if(enabled&&visible){
int i,j;
SDL_GetMouseState(&i,&j);
if(i>=x&&i<x+Width&&j>=y&&j<y+Height){
State=1;
if(event.type==SDL_KEYDOWN && !b){
int key=(int)event.key.keysym.unicode;
if(key>=32&&key<=126){
Caption+=char(key);
if(EventCallback){
GUIEvent e={EventCallback,Name,this,GUIEventClick};
GUIEventQueue.push_back(e);
}
}else if(event.key.keysym.sym==SDLK_BACKSPACE||event.key.keysym.sym==SDLK_DELETE){
if(Caption.length()>0){
Caption=Caption.substr(0,Caption.length()-1);
if(EventCallback){
GUIEvent e={EventCallback,Name,this,GUIEventClick};
GUIEventQueue.push_back(e);
}
}
}
b=true;
}
}
}
break;
}
//
for(unsigned int i=0;i<ChildControls.size();i++){
bool b1=ChildControls[i]->handle_events(x,y,enabled,visible,b);
b=b||b1;
}
return b;
}
void GUIObject::render(int x,int y){
SDL_Rect r;
if(!Visible) return;
x+=Left;
y+=Top;
//
switch(Type){
case GUIObjectLabel:
{
r.x=x;
r.y=y;
r.w=Width;
r.h=Height;
//SDL_FillRect(screen,&r,-1); //label is transparent
const char* lp=Caption.c_str();
if(lp!=NULL && lp[0]){
SDL_Color black={0,0,0,0};
SDL_Surface *bm=TTF_RenderText_Blended(font_small,lp,black);
r.x=x;
r.y=y+(Height - bm->h)/2;
SDL_BlitSurface(bm,NULL,screen,&r);
SDL_FreeSurface(bm);
}
}
break;
case GUIObjectButton:
{
int clr=-1;
if(State==1) clr=SDL_MapRGB(screen->format,192,192,192);
else if(State==2) clr=SDL_MapRGB(screen->format,128,128,128);
r.x=x;
r.y=y;
r.w=Width;
r.h=Height;
SDL_FillRect(screen,&r,0);
r.x=x+1;
r.y=y+1;
r.w=Width-2;
r.h=Height-2;
SDL_FillRect(screen,&r,clr);
const char* lp=Caption.c_str();
if(lp!=NULL && lp[0]){
SDL_Color black={0,0,0,0};
SDL_Surface *bm=TTF_RenderText_Blended(font_small,lp,black);
r.x=x+(Width - bm->w)/2;
r.y=y+(Height - bm->h)/2;
SDL_BlitSurface(bm,NULL,screen,&r);
SDL_FreeSurface(bm);
}
}
break;
case GUIObjectTextBox:
{
int clr=-1;
if(State==1) clr=SDL_MapRGB(screen->format,192,192,192);
r.x=x;
r.y=y;
r.w=Width;
r.h=Height;
SDL_FillRect(screen,&r,0);
r.x=x+1;
r.y=y+1;
r.w=Width-2;
r.h=Height-2;
SDL_FillRect(screen,&r,clr);
const char* lp=Caption.c_str();
if(lp!=NULL && lp[0]){
SDL_Color black={0,0,0,0};
SDL_Surface *bm=TTF_RenderText_Blended(font_small,lp,black);
r.x=x+2;
r.y=y+(Height - bm->h)/2;
SDL_BlitSurface(bm,NULL,screen,&r);
if(State==1){
r.x=x+4+bm->w;
r.y=y+4;
r.w=2;
r.h=Height-8;
SDL_FillRect(screen,&r,0);
}
SDL_FreeSurface(bm);
}else{
if(State==1){
r.x=x+4;
r.y=y+4;
r.w=2;
r.h=Height-8;
SDL_FillRect(screen,&r,0);
}
}
}
break;
case GUIObjectFrame:
{
r.x=x;
r.y=y;
r.w=Width;
r.h=Height;
SDL_FillRect(screen,&r,0);
r.x=x+1;
r.y=y+1;
r.w=Width-2;
r.h=Height-2;
SDL_FillRect(screen,&r,-1);
const char* lp=Caption.c_str();
if(lp!=NULL && lp[0]){
SDL_Color black={0,0,0,0};
SDL_Color white={255,255,255,255};
SDL_Surface *bm=TTF_RenderText_Shaded(font,lp,black,white);
r.x=x+(Width - bm->w)/2;
r.y=y - (int(bm->h))/2;
SDL_BlitSurface(bm,NULL,screen,&r);
SDL_FreeSurface(bm);
}
}
break;
}
//
for(unsigned int i=0;i<ChildControls.size();i++){
ChildControls[i]->render(x,y);
}
}

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