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diff --git a/src/GUIListBox.cpp b/src/GUIListBox.cpp
index 6ca43ab..285def0 100644
--- a/src/GUIListBox.cpp
+++ b/src/GUIListBox.cpp
@@ -1,445 +1,445 @@
/*
* 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 "GUIListBox.h"
using namespace std;
GUIListBox::GUIListBox(int left,int top,int width,int height,bool enabled,bool visible,int gravity):
GUIObject(left,top,width,height,0,NULL,-1,enabled,visible,gravity),itemHeight(24),selectable(true){
//Set the state -1.
state=-1;
//Create the scrollbar and add it to the children.
scrollBar=new GUIScrollBar(width-16,0,16,height,1,0,0,0,1,1,true,true);
childControls.push_back(scrollBar);
}
GUIListBox::~GUIListBox(){
//Remove all items and cache.
clearItems();
//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 GUIListBox::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;
y+=top;
//Update the scrollbar.
if(scrollBar->visible)
b=b||scrollBar->handleEvents(x,y,enabled,visible,b);
//Set state negative.
state=-1;
//Check if the GUIListBox is visible, enabled and no event has been processed before.
if(enabled&&visible&&!b){
//The mouse location (x=i, y=j) and the mouse button (k).
int i,j;
SDL_GetMouseState(&i,&j);
//Convert the mouse location to a relative location.
i-=x+2;
j-=y+2;
//Check if the mouse is inside the GUIListBox.
if(i>=0&&i<width-4&&j>=0&&j<height-4){
//Calculate the y location with the scrollbar position.
int idx=j/itemHeight+scrollBar->value;
//If the entry isn't above the max we have an event.
if(idx>=0&&idx<(int)item.size()){
state=idx;
//Check if the left mouse button is pressed.
if(event.type==SDL_MOUSEBUTTONDOWN && event.button.button==SDL_BUTTON_LEFT && value!=idx){
value=idx;
//If event callback is configured then add an event to the queue.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventClick};
GUIEventQueue.push_back(e);
}
}
}
//Check for mouse wheel scrolling.
if(event.type==SDL_MOUSEBUTTONDOWN && event.button.button==SDL_BUTTON_WHEELDOWN && scrollBar->enabled){
scrollBar->value++;
if(scrollBar->value>scrollBar->maxValue)
scrollBar->value=scrollBar->maxValue;
}else if(event.type==SDL_MOUSEBUTTONDOWN && event.button.button==SDL_BUTTON_WHEELUP && scrollBar->enabled){
scrollBar->value--;
if(scrollBar->value<0)
scrollBar->value=0;
}
}
}
//Process child controls event except for the scrollbar.
//That's why i starts at one.
for(unsigned int i=1;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;
}
void GUIListBox::render(int x,int y,bool draw){
if(updateScrollbar){
//Calculate the height of the content.
- int maxY;
+ int maxY=0;
for(int i=0;i<images.size();i++){
maxY+=images.at(i)->h;
}
//Check if we need to show the scrollbar for many entries.
if(maxY<height){
scrollBar->maxValue=0;
scrollBar->value=0;
scrollBar->visible=false;
}else{
scrollBar->visible=true;
scrollBar->maxValue=item.size();
int yy=0;
for(int i=images.size()-1;i>0;i--){
yy+=images.at(i)->h;
if(yy>height)
break;
else
scrollBar->maxValue--;
}
scrollBar->largeChange=item.size()/4;
}
updateScrollbar=false;
}
//Rectangle the size of the GUIObject, used to draw borders.
//SDL_Rect r; //Unused local variable :/
//There's no need drawing the GUIObject when it's invisible.
if(!visible||!draw)
return;
//Get the absolute x and y location.
x+=left;
y+=top;
//Draw the background box.
SDL_Rect r={x,y,width,height};
SDL_FillRect(screen,&r,0xFFFFFFFF);
//Loop through the entries and draw them.
for(int i=scrollBar->value,j=y+1;j>height,i<item.size();i++){
//Check if the current item is out side of the widget.
int yOver=images[i]->h;
if(j+images[i]->h>y+height)
yOver=y+height-j;
if(yOver>0){
if(selectable){
//Check if the mouse is hovering on current entry. If so draw borders around it.
if(state==i)
drawGUIBox(x,j-1,width,yOver+1,screen,0x00000000);
//Check if the current entry is selected. If so draw a gray background.
if(value==i)
drawGUIBox(x,j-1,width,yOver+1,screen,0xDDDDDDFF);
}
//Draw the image.
SDL_Rect clip;
clip.x=0;
clip.y=0;
clip.w=images[i]->w;
clip.h=yOver;
applySurface(x,j,images[i],screen,&clip);
}else{
break;
}
j+=images[i]->h;
}
//Draw borders around the whole thing.
drawGUIBox(x,y,width,height,screen,0x00000000);
//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);
}
}
void GUIListBox::clearItems(){
item.clear();
for(unsigned int i=0;i<images.size();i++){
SDL_FreeSurface(images[i]);
}
images.clear();
}
void GUIListBox::addItem(std::string name, SDL_Surface* image){
item.push_back(name);
if(image){
itemHeight=image->h;
images.push_back(image);
}else if(!image&&!name.empty()){
SDL_Color black={0,0,0,0};
SDL_Surface* tmp=TTF_RenderUTF8_Blended(fontText,name.c_str(),black);
images.push_back(tmp);
}
updateScrollbar=true;
}
void GUIListBox::updateItem(int index, std::string newText, SDL_Surface* newImage){
item.at(index)=newText;
if(newImage){
itemHeight=newImage->h;
SDL_FreeSurface(images.at(index));
images.at(index)=newImage;
}else if(!newImage&&!newText.empty()){
SDL_FreeSurface(images.at(index));
SDL_Color black={0,0,0,0};
SDL_Surface* tmp=TTF_RenderUTF8_Blended(fontText,newText.c_str(),black);
images.at(index)=tmp;
}
updateScrollbar=true;
}
std::string GUIListBox::getItem(int index){
return item.at(index);
}
GUISingleLineListBox::GUISingleLineListBox(int left,int top,int width,int height,bool enabled,bool visible,int gravity):
GUIObject(left,top,width,height,0,NULL,-1,enabled,visible,gravity),animation(0){}
bool GUISingleLineListBox::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;
state&=~0xF;
if(enabled&&visible){
//The mouse location (x=i, y=j) and the mouse button (k).
int i,j,k;
k=SDL_GetMouseState(&i,&j);
//Convert the mouse location to a relative location.
i-=x;
j-=y;
//The selected button.
//0=nothing 1=left 2=right.
int idx=0;
//Check which button the mouse is above.
if(i>=0&&i<width&&j>=0&&j<height){
if(i<26 && i<width/2){
//The left arrow.
idx=1;
}else if(i>=width-26){
//The right arrow.
idx=2;
}
}
//If idx is 0 it means the mous doesn't hover any arrow so reset animation.
if(idx==0)
animation=0;
//Check if there's a mouse button press or not.
if(k&SDL_BUTTON(1)){
if(((state>>4)&0xF)==idx)
state|=idx;
}else{
state|=idx;
}
//Check if there's a mouse press.
if(event.type==SDL_MOUSEBUTTONDOWN && event.button.button==SDL_BUTTON_LEFT && idx){
state=idx|(idx<<4);
}else if(event.type==SDL_MOUSEBUTTONUP && event.button.button==SDL_BUTTON_LEFT && idx && ((state>>4)&0xF)==idx){
int m=(int)item.size();
if(m>0){
if(idx==2){
idx=value+1;
if(idx<0||idx>=m) idx=0;
if(idx!=value){
value=idx;
//If there is an event callback then call it.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventClick};
GUIEventQueue.push_back(e);
}
}
}else if(idx==1){
idx=value-1;
if(idx<0||idx>=m) idx=m-1;
if(idx!=value){
value=idx;
//If there is an event callback then call it.
if(eventCallback){
GUIEvent e={eventCallback,name,this,GUIEventClick};
GUIEventQueue.push_back(e);
}
}
}
}
}
if(event.type==SDL_MOUSEBUTTONUP) state&=0xF;
}else{
//Set state zero.
state=0;
}
//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;
}
void GUISingleLineListBox::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;
//NOTE: logic in the render method since it's the only part that gets called every frame.
if((state&0xF)==0x1 || (state&0xF)==0x2){
animation++;
if(animation>20)
animation=-20;
}
//Get the absolute x and y location.
x+=left;
y+=top;
if(gravity==GUIGravityCenter)
gravityX=int(width/2);
else if(gravity==GUIGravityRight)
gravityX=width;
x-=gravityX;
//Check if the enabled state changed or the caption, if so we need to clear the (old) cache.
if(enabled!=cachedEnabled || item[value].compare(cachedCaption)!=0){
//Free the cache.
SDL_FreeSurface(cache);
cache=NULL;
//And cache the new values.
cachedEnabled=enabled;
cachedCaption=item[value];
}
//Draw the text.
if(value>=0 && value<(int)item.size()){
//Get the text.
const char* lp=item[value].c_str();
//Check if the text is empty or not.
if(lp!=NULL && lp[0]){
if(!cache){
SDL_Color color;
if(inDialog)
color=themeTextColorDialog;
else
color=themeTextColor;
cache=TTF_RenderUTF8_Blended(fontGUI,lp,color);
//If the text is too wide then we change to smaller font (?)
//NOTE: The width is 32px smaller (2x16px for the arrows).
if(cache->w>width-32){
SDL_FreeSurface(cache);
cache=TTF_RenderUTF8_Blended(fontGUISmall,lp,color);
}
}
if(draw){
//Center the text both vertically as horizontally.
r.x=x+(width-cache->w)/2;
r.y=y+(height-cache->h)/2-GUI_FONT_RAISE;
//Draw the text and free the surface afterwards.
SDL_BlitSurface(cache,NULL,screen,&r);
}
}
}
if(draw){
//Draw the arrows.
SDL_Rect r2={48,0,16,16};
r.x=x;
if((state&0xF)==0x1)
r.x+=abs(animation/2);
r.y=y+4;
if(inDialog)
applySurface(r.x,r.y,arrowLeft2,screen,NULL);
else
applySurface(r.x,r.y,arrowLeft1,screen,NULL);
r.x=x+width-16;
if((state&0xF)==0x2)
r.x-=abs(animation/2);
if(inDialog)
applySurface(r.x,r.y,arrowRight2,screen,NULL);
else
applySurface(r.x,r.y,arrowRight1,screen,NULL);
}
//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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