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GUISpinBox.cpp
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GUISpinBox.cpp
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/*
* 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 "Functions.h"
#include "GUISpinBox.h"
#include "ThemeManager.h"
#include <algorithm>
bool GUISpinBox::handleEvents(SDL_Renderer& renderer,int x,int y,bool enabled,bool visible,bool processed){
//Backup the old state.
int oldState = state;
//First we call the GUITextBox::handleEvents().
bool b0 = GUITextBox::handleEvents(renderer, x, y, enabled, visible, 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;
//Reset "key" to stop contant update of "number" in render().
//If the mouse is still on the button, the "key" will be reassigned later.
key=-1;
//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) {
if (event.key.keysym.sym == SDLK_UP) {
updateValue(true);
b = true;
} else if (event.key.keysym.sym == SDLK_DOWN) {
updateValue(false);
b = true;
}
}
//Only process mouse event when not in keyboard only mode
if (!isKeyboardOnly &&
(event.type == SDL_MOUSEMOTION || event.type == SDL_MOUSEBUTTONDOWN || event.type == SDL_MOUSEBUTTONUP || event.type == SDL_MOUSEWHEEL))
{
//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 widget and the event hasn't been processed.
if (i >= x && i < x + width && j >= y && j < y + height && !b) {
//Check if the mouse is inside the up/down button.
if (i >= x + width - 16) {
//Reset the cursor back to normal.
currentCursor = CURSOR_POINTER;
//Check for a mouse button press.
if (k&SDL_BUTTON(1)){
if (j < y + 17){
//Set the key values correct.
this->key = SDLK_UP;
keyHoldTime = 0;
keyTime = getKeyboardRepeatDelay();
//Update once to prevent a lag.
updateValue(true);
} else{
//Set the key values correct.
this->key = SDLK_DOWN;
keyHoldTime = 0;
keyTime = getKeyboardRepeatDelay();
//Update once to prevent a lag.
updateValue(false);
}
}
}
//Allow mouse wheel to change value.
if (event.type == SDL_MOUSEWHEEL){
if (event.wheel.y > 0){
updateValue(true);
b = true;
} else if (event.wheel.y < 0){
updateValue(false);
b = true;
}
}
//Event has been processed as long as this is a mouse event and the mouse is inside the widget.
b = true;
}
}
//Validate the input when we lost focus.
if (oldState == 2 && state == 0){
update();
}
}
return b || b0;
}
void GUISpinBox::render(SDL_Renderer &renderer, int x, int y, bool draw){
//Call the GUITextBox::render().
GUITextBox::render(renderer, x, y, draw);
//FIXME: Logic in the render method since that is update constant.
if(key!=-1){
//Increase the key time.
keyHoldTime++;
//Make sure the deletionTime isn't to short.
if(keyHoldTime>=keyTime){
keyHoldTime=0;
keyTime = getKeyboardRepeatInterval();
//Now check the which key it was.
switch(key){
case SDLK_UP:
{
updateValue(true);
break;
}
case SDLK_DOWN:
{
updateValue(false);
break;
}
}
}
}
//There's no need drawing when it's invisible.
if(!visible || !draw)
return;
//Get the absolute x and y location.
x+=left;
y+=top;
//Draw arrow buttons.
SDL_Rect srcRect = { 80, 0, 16, 16 };
SDL_Rect dstRect = { x + width - 18, y + 1, srcRect.w, srcRect.h };
SDL_RenderCopy(&renderer, bmGuiTex.get(), &srcRect, &dstRect);
srcRect.x = 96;
dstRect.y += 16;
SDL_RenderCopy(&renderer, bmGuiTex.get(), &srcRect, &dstRect);
}
void GUISpinBox::update(){
//Read number from the caption string.
double number=atof(caption.c_str());
//Stay in the limits.
if(number>limitMax){
number=limitMax;
}else if(number<limitMin){
number=limitMin;
}
//Write the number to the caption string.
char str[128];
sprintf(str,format.c_str(),number);
updateText(str);
}
void GUISpinBox::updateValue(bool positive){
//Read number from the caption string.
double number=atof(caption.c_str());
//Apply change.
if(positive)
number+=change;
else
number-=change;
//Stay in the limits.
if(number>limitMax){
number=limitMax;
}else if(number<limitMin){
number=limitMin;
}
//Write the number to the caption string.
char str[128];
sprintf(str,format.c_str(),number);
updateText(str);
}

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