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diff --git a/src/GUIObject.cpp b/src/GUIObject.cpp
index 357ae67..2ce85b6 100644
--- a/src/GUIObject.cpp
+++ b/src/GUIObject.cpp
@@ -1,589 +1,608 @@
/*
* Copyright (C) 2011-2012 Me and My Shadow
*
* This file is part of Me and My Shadow.
*
* Me and My Shadow is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Me and My Shadow is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
*/
#include "GUIObject.h"
#include <iostream>
#include <list>
using namespace std;
//Set the GUIObjectRoot to NULL.
GUIObject* GUIObjectRoot=NULL;
//Initialise the event queue.
list<GUIEvent> GUIEventQueue;
void GUIObjectHandleEvents(bool kill){
//Check if user resizes the window.
if(event.type==SDL_VIDEORESIZE){
//onVideoResize();
//Don't let other objects process this event (?)
return;
}
//Make sure that GUIObjectRoot isn't null.
if(GUIObjectRoot)
GUIObjectRoot->handleEvents();
//Check for SDL_QUIT.
if(event.type==SDL_QUIT && kill){
//We get a quit event so enter the exit state.
setNextState(STATE_EXIT);
delete GUIObjectRoot;
GUIObjectRoot=NULL;
return;
}
//Keep calling events until there are none left.
while(!GUIEventQueue.empty()){
//Get one event and remove it from the queue.
GUIEvent e=GUIEventQueue.front();
GUIEventQueue.pop_front();
//If an eventCallback exist call it.
if(e.eventCallback){
e.eventCallback->GUIEventCallback_OnEvent(e.name,e.obj,e.eventType);
}
}
//We empty the event queue just to be sure.
GUIEventQueue.clear();
}
GUIObject::~GUIObject(){
if(cache){
SDL_FreeSurface(cache);
cache=NULL;
}
//We need to delete every child we have.
for(unsigned int i=0;i<childControls.size();i++){
delete childControls[i];
}
//Deleted the childs now empty the childControls vector.
childControls.clear();
}
bool GUIObject::handleEvents(int x,int y,bool enabled,bool visible,bool processed){
//Boolean if the event is processed.
bool b=processed;
//The GUIObject is only enabled when he and his parent are enabled.
enabled=enabled && this->enabled;
//The GUIObject is only enabled when he and his parent are enabled.
visible=visible && this->visible;
//Get the absolute position.
x+=left-gravityX;
y+=top;
//Type specific event handling.
switch(type){
case GUIObjectButton:
//Set state to 0.
state=0;
//Only check for events when the object is both enabled and visible.
if(enabled&&visible){
//The mouse location (x=i, y=j) and the mouse button (k).
int i,j,k;
k=SDL_GetMouseState(&i,&j);
//Check if the mouse is inside the GUIObject.
if(i>=x&&i<x+width&&j>=y&&j<y+height){
//We have hover so set state to one.
state=1;
//Check for a mouse button press.
if(k&SDL_BUTTON(1))
state=2;
//Check if there's a mouse press and the event hasn't been already processed.
if(event.type==SDL_MOUSEBUTTONUP && event.button.button==SDL_BUTTON_LEFT && !b){
//If event callback is configured then add an event to the queue.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventClick};
GUIEventQueue.push_back(e);
}
//Event has been processed.
b=true;
}
}
}
break;
case GUIObjectCheckBox:
//Set state to 0.
state=0;
//Only check for events when the object is both enabled and visible.
if(enabled&&visible){
//The mouse location (x=i, y=j) and the mouse button (k).
int i,j,k;
k=SDL_GetMouseState(&i,&j);
//Check if the mouse is inside the GUIObject.
if(i>=x&&i<x+width&&j>=y&&j<y+height){
//We have hover so set state to one.
state=1;
//Check for a mouse button press.
if(k&SDL_BUTTON(1))
state=2;
//Check if there's a mouse press and the event hasn't been already processed.
if(event.type==SDL_MOUSEBUTTONUP && event.button.button==SDL_BUTTON_LEFT && !b){
//It's a checkbox so toggle the value.
value=value?0:1;
//If event callback is configured then add an event to the queue.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventClick};
GUIEventQueue.push_back(e);
}
//Event has been processed.
b=true;
}
}
}
break;
case GUIObjectTextBox:
//NOTE: We don't reset the state to have a "focus" effect.
//Only check for events when the object is both enabled and visible.
if(enabled&&visible){
//Check if there's a key press and the event hasn't been already processed.
if(state==2 && event.type==SDL_KEYDOWN && !b){
//Get the keycode.
int key=(int)event.key.keysym.unicode;
//Check if the key is supported.
if(key>=32&&key<=126){
//Add the key to the text after the carrot.
caption.insert((size_t)value,1,char(key));
value=clamp(value+1,0,caption.length());
//If there is an event callback then call it.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventChange};
GUIEventQueue.push_back(e);
}
}else if(event.key.keysym.sym==SDLK_BACKSPACE){
//We need to remove a character so first make sure that there is text.
if(caption.length()>0&&value>0){
//Remove the character before the carrot.
value=clamp(value-1,0,caption.length());
caption.erase((size_t)value,1);
//If there is an event callback then call it.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventChange};
GUIEventQueue.push_back(e);
}
}
}else if(event.key.keysym.sym==SDLK_DELETE){
//We need to remove a character so first make sure that there is text.
if(caption.length()>0){
//Remove the character after the carrot.
value=clamp(value,0,caption.length());
caption.erase((size_t)value,1);
//If there is an event callback then call it.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventChange};
GUIEventQueue.push_back(e);
}
}
}else if(event.key.keysym.sym==SDLK_RIGHT){
value=clamp(value+1,0,caption.length());
}else if(event.key.keysym.sym==SDLK_LEFT){
value=clamp(value-1,0,caption.length());
}
//The event has been processed.
b=true;
}
//The mouse location (x=i, y=j) and the mouse button (k).
int i,j,k;
k=SDL_GetMouseState(&i,&j);
//Check if the mouse is inside the GUIObject.
if(i>=x&&i<x+width&&j>=y&&j<y+height){
//We can only increase our state. (nothing->hover->focus).
if(state!=2){
state=1;
}
//Also update the cursor type.
currentCursor=CURSOR_CARROT;
//Check for a mouse button press.
if(k&SDL_BUTTON(1)){
//We have focus.
state=2;
- //TODO Move carrot to place clicked
- value=caption.length();
+
+ //Move carrot to the place clicked
+ int click=i-left;
+ int wid=0;
+
+ if(!cache){
+ value=0;
+ }else if(click>cache->w){
+ value=caption.length();
+ }else{
+ for(int i=0;i<caption.length();i++){
+ int advance;
+ TTF_GlyphMetrics(fontText,caption[i],NULL,NULL,NULL,NULL,&advance);
+ wid+=advance;
+
+ if(click<wid-advance/2){
+ value=i;
+ break;
+ }
+ }
+ }
}
}else{
//The mouse is outside the TextBox.
//If we don't have focus but only hover we lose it.
if(state==1){
state=0;
}
//If it's a click event outside the textbox then we blur.
if(event.type==SDL_MOUSEBUTTONUP && event.button.button==SDL_BUTTON_LEFT){
//Set state to 0.
state=0;
}
}
}
break;
}
//Also let the children handle their events.
for(unsigned int i=0;i<childControls.size();i++){
bool b1=childControls[i]->handleEvents(x,y,enabled,visible,b);
//The event is processed when either our or the childs is true (or both).
b=b||b1;
}
return b;
}
//Found on gmane.comp.lib.sdl mailing list, see: http://comments.gmane.org/gmane.comp.lib.sdl/33664
//Original code by "Patricia Curtis" and later modified by "Jason"
static void SetSurfaceTrans(SDL_Surface* Src,double PercentTrans){
Uint8 Sbpp = Src->format->BytesPerPixel;
Uint8 *Sbits;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int amask = 0x000000ff;
int cmask = 0xffffff00;
#else
int amask = 0xff000000;
int cmask = 0x00ffffff;
int Shift = 24;
#endif
int x,y;
Uint32 Pixels;
Uint32 Alpha;
for(y=0;y<Src->h;y++)
{
for(x=0;x<Src->w;x++)
{
Sbits = ((Uint8 *)Src->pixels+(y*Src->pitch)+(x*Sbpp));
Pixels = *((Uint32 *)(Sbits));
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
Alpha = Pixels & mask;
#else
Alpha = (Pixels&amask)>>Shift;
#endif
Alpha*=PercentTrans;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
*((Uint32 *)(Sbits)) = (Pixels & cmask)|Alpha;
#else
*((Uint32 *)(Sbits)) = (Pixels & cmask)|(Alpha<<Shift);
#endif
}
}
}
void GUIObject::render(int x,int y,bool draw){
//Rectangle the size of the GUIObject, used to draw borders.
SDL_Rect r;
//There's no need drawing the GUIObject when it's invisible.
if(!visible)
return;
//Get the absolute x and y location.
x+=left;
y+=top;
//Check if the enabled state changed or the caption, if so we need to clear the (old) cache.
if(enabled!=cachedEnabled || caption.compare(cachedCaption)!=0 || width<=0){
//Free the cache.
SDL_FreeSurface(cache);
cache=NULL;
//And cache the new values.
cachedEnabled=enabled;
cachedCaption=caption;
//Finally resize the widget
if(autoWidth)
width=-1;
}
//Now do the type specific rendering.
switch(type){
case GUIObjectLabel:
{
//The rectangle is simple.
r.x=x;
r.y=y;
r.w=width;
r.h=height;
//We don't draw a background and/or border since that label is transparent.
//Get the caption and make sure it isn't empty.
const char* lp=caption.c_str();
if(lp!=NULL && lp[0]){
//Render the text using the small font.
if(cache==NULL){
SDL_Color color;
if(inDialog)
color=themeTextColorDialog;
else
color=themeTextColor;
cache=TTF_RenderUTF8_Blended(fontText,lp,color);
if(width<=0)
width=cache->w;
}
if(draw){
if(gravity==GUIGravityCenter)
gravityX=(width-cache->w)/2;
else if(gravity==GUIGravityRight)
gravityX=width+cache->w;
else
gravityX=0;
//Center the text vertically and draw it to the screen.
r.y=y+(height - cache->h)/2;
r.x+=gravityX;
SDL_BlitSurface(cache,NULL,screen,&r);
}
}
}
break;
case GUIObjectCheckBox:
{
//The rectangle is simple.
r.x=x;
r.y=y;
r.w=width;
r.h=height;
//Get the text.
const char* lp=caption.c_str();
//Make sure it isn't empty.
if(lp!=NULL && lp[0]){
//We render black text.
if(!cache){
SDL_Color color;
if(inDialog)
color=themeTextColorDialog;
else
color=themeTextColor;
cache=TTF_RenderUTF8_Blended(fontText,lp,color);
}
if(draw){
//Calculate the location, center it vertically.
r.x=x;
r.y=y+(height - cache->h)/2;
//Draw the text and free the surface.
SDL_BlitSurface(cache,NULL,screen,&r);
}
}
if(draw){
//Draw the check (or not).
SDL_Rect r1={0,0,16,16};
if(value==1||value==2)
r1.x=value*16;
r.x=x+width-20;
r.y=y+(height-16)/2;
SDL_BlitSurface(bmGUI,&r1,screen,&r);
}
}
break;
case GUIObjectButton:
{
//Get the text.
const char* lp=caption.c_str();
//Make sure the text isn't empty.
if(lp!=NULL && lp[0]){
if(!cache){
SDL_Color color;
if(inDialog)
color=themeTextColorDialog;
else
color=themeTextColor;
if(!smallFont)
cache=TTF_RenderUTF8_Blended(fontGUI,lp,color);
else
cache=TTF_RenderUTF8_Blended(fontGUISmall,lp,color);
if(!enabled)
SetSurfaceTrans(cache,0.5);
if(width<=0){
width=cache->w+50;
if(gravity==GUIGravityCenter){
gravityX=int(width/2);
}else if(gravity==GUIGravityRight){
gravityX=width;
}else{
gravityX=0;
}
}
}
if(draw){
//Center the text both vertically as horizontally.
r.x=x-gravityX+(width-cache->w)/2;
r.y=y+(height-cache->h)/2-GUI_FONT_RAISE;
//Check if the arrows don't fall of.
if(cache->w+32<=width){
//Create a rectangle that selects the right image from bmGUI,
SDL_Rect r2={64,0,16,16};
if(state==1){
if(inDialog){
applySurface(x-gravityX+(width-cache->w)/2+4+cache->w+5,y+2,arrowLeft2,screen,NULL);
applySurface(x-gravityX+(width-cache->w)/2-25,y+2,arrowRight2,screen,NULL);
}else{
applySurface(x-gravityX+(width-cache->w)/2+4+cache->w+5,y+2,arrowLeft1,screen,NULL);
applySurface(x-gravityX+(width-cache->w)/2-25,y+2,arrowRight1,screen,NULL);
}
}else if(state==2){
if(inDialog){
applySurface(x-gravityX+(width-cache->w)/2+4+cache->w,y+2,arrowLeft2,screen,NULL);
applySurface(x-gravityX+(width-cache->w)/2-20,y+2,arrowRight2,screen,NULL);
}else{
applySurface(x-gravityX+(width-cache->w)/2+4+cache->w,y+2,arrowLeft1,screen,NULL);
applySurface(x-gravityX+(width-cache->w)/2-20,y+2,arrowRight1,screen,NULL);
}
}
}
//Draw the text and free the surface.
SDL_BlitSurface(cache,NULL,screen,&r);
}
}
}
break;
case GUIObjectTextBox:
{
if(draw){
//Default background opacity
int clr=50;
//If hovering or focused make background more visible.
if(state==1)
clr=128;
else if (state==2)
clr=100;
//Draw the box.
Uint32 color=0xFFFFFF00|clr;
drawGUIBox(x,y,width,height,screen,color);
}
//Get the text.
const char* lp=caption.c_str();
//Make sure it isn't empty.
if(lp!=NULL && lp[0]){
if(!cache){
//Draw the black text.
SDL_Color black={0,0,0,0};
cache=TTF_RenderUTF8_Blended(fontText,lp,black);
}
if(draw){
//Calculate the location, center it vertically.
r.x=x+2;
r.y=y+(height - cache->h)/2;
//Draw the text.
SDL_Rect tmp={0,0,width-2,25};
SDL_BlitSurface(cache,&tmp,screen,&r);
//Only draw the carrot when focus.
if(state==2){
r.x=x;
r.y=y+4;
r.w=2;
r.h=height-8;
int advance;
for(int n=0;n<value;n++){
TTF_GlyphMetrics(fontText,caption[n],NULL,NULL,NULL,NULL,&advance);
r.x+=advance;
}
//Make sure that the carrot is inside the textbox.
if(r.x<x+width)
SDL_FillRect(screen,&r,0);
}
}
}else{
//Only draw the carrot when focus.
if(state==2&&draw){
r.x=x+4;
r.y=y+4;
r.w=2;
r.h=height-8;
SDL_FillRect(screen,&r,0);
}
}
}
break;
case GUIObjectFrame:
{
if(draw){
//Create a rectangle the size of the button and fill it.
Uint32 color=0xDDDDDDFF;
drawGUIBox(x,y,width,height,screen,color);
}
//Get the title text.
const char* lp=caption.c_str();
//Make sure it isn't empty.
if(lp!=NULL && lp[0]){
if(!cache){
cache=TTF_RenderUTF8_Blended(fontGUI,lp,themeTextColorDialog);
}
if(draw){
//Calculate the location, center horizontally and vertically relative to the top.
r.x=x+(width-cache->w)/2;
r.y=y+6-GUI_FONT_RAISE;
//Draw the text and free the surface.
SDL_BlitSurface(cache,NULL,screen,&r);
}
}
}
break;
}
//We now need to draw all the children of the GUIObject.
for(unsigned int i=0;i<childControls.size();i++){
childControls[i]->render(x,y,draw);
}
}

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