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/*
Copyright (C) 2007 by David White <dave@whitevine.net>
Part of the Silver Tree Project
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 or later.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY.
See the COPYING file for more details.
*/
#include <boost/bind.hpp>
#include "asserts.hpp"
#include "button.hpp"
#include "custom_object_functions.hpp"
#include "iphone_controls.hpp"
#include "formula.hpp"
#include "label.hpp"
#include "raster.hpp"
#include "surface_cache.hpp"
#include "framed_gui_element.hpp"
#include "widget_factory.hpp"
namespace gui {
button::button(const std::string& str, boost::function<void()> onclick)
: label_(new label(str, graphics::color_white())),
onclick_(onclick), button_resolution_(BUTTON_SIZE_NORMAL_RESOLUTION),
button_style_(BUTTON_STYLE_NORMAL), hpadding_(10), vpadding_(4),
down_(false)
{
set_environment();
setup();
}
button::button(widget_ptr label, boost::function<void ()> onclick, BUTTON_STYLE button_style, BUTTON_RESOLUTION button_resolution)
: label_(label), onclick_(onclick), button_resolution_(button_resolution), button_style_(button_style),
down_(false), hpadding_(10), vpadding_(4)
{
set_environment();
setup();
}
button::button(const variant& v, game_logic::formula_callable* e) : widget(v,e), down_(false)
{
variant label_var = v["label"];
label_ = label_var.is_map() ? widget_factory::create(label_var, e) : new label(label_var.as_string_default("Button"), graphics::color_white());
ASSERT_LOG(v.has_key("on_click"), "Button must be supplied with an on_click handler");
// create delegate for onclick
ASSERT_LOG(get_environment() != 0, "You must specify a callable environment");
click_handler_ = get_environment()->create_formula(v["on_click"]);
onclick_ = boost::bind(&button::click, this);
button_resolution_ = v["resolution"].as_string_default("normal") == "normal" ? BUTTON_SIZE_NORMAL_RESOLUTION : BUTTON_SIZE_DOUBLE_RESOLUTION;
button_style_ = v["style"].as_string_default("default") == "default" ? BUTTON_STYLE_DEFAULT : BUTTON_STYLE_NORMAL;
hpadding_ = v["hpad"].as_int(10);
vpadding_ = v["vpad"].as_int(4);
if(v.has_key("padding")) {
ASSERT_LOG(v["padding"].num_elements() == 2, "Incorrect number of padding elements specifed." << v["padding"].num_elements());
hpadding_ = v["padding"][0].as_int();
vpadding_ = v["padding"][1].as_int();
}
setup();
}
void button::click()
{
if(get_environment()) {
variant value = click_handler_->execute(*get_environment());
get_environment()->execute_command(value);
} else {
std::cerr << "button::click() called without environment!" << std::endl;
}
}
void button::setup()
{
if(button_style_ == BUTTON_STYLE_DEFAULT){
normal_button_image_set_ = framed_gui_element::get("default_button");
depressed_button_image_set_ = framed_gui_element::get("default_button_pressed");
focus_button_image_set_ = framed_gui_element::get("default_button_focus");
}else{
normal_button_image_set_ = framed_gui_element::get("regular_button");
depressed_button_image_set_ = framed_gui_element::get("regular_button_pressed");
focus_button_image_set_ = framed_gui_element::get("regular_button_focus");
}
current_button_image_set_ = normal_button_image_set_;
set_label(label_);
}
void button::set_label(widget_ptr label)
{
label_ = label;
set_dim(label_->width()+hpadding_*2,label_->height()+vpadding_*2);
}
void button::handle_draw() const
{
label_->set_loc(x()+width()/2 - label_->width()/2,y()+height()/2 - label_->height()/2);
current_button_image_set_->blit(x(),y(),width(),height(), button_resolution_ != 0);
label_->draw();
}
void button::handle_process()
{
widget::handle_process();
label_->process();
}
bool button::handle_event(const SDL_Event& event, bool claimed)
{
if((event.type == SDL_MOUSEBUTTONDOWN || event.type == SDL_MOUSEBUTTONUP)
&& (event.button.button == SDL_BUTTON_WHEELUP || event.button.button == SDL_BUTTON_WHEELDOWN)
&& in_widget(event.button.x, event.button.y)) {
// skip processing if mousewheel event
return claimed;
}
if(claimed) {
current_button_image_set_ = normal_button_image_set_;
down_ = false;
}
if(event.type == SDL_MOUSEMOTION) {
const SDL_MouseMotionEvent& e = event.motion;
if(in_widget(e.x,e.y)) {
current_button_image_set_ = down_ ? depressed_button_image_set_ : focus_button_image_set_;
} else {
current_button_image_set_ = normal_button_image_set_;
}
} else if(event.type == SDL_MOUSEBUTTONDOWN) {
const SDL_MouseButtonEvent& e = event.button;
if(in_widget(e.x,e.y)) {
current_button_image_set_ = depressed_button_image_set_;
down_ = true;
claimed = true;
}
} else if(event.type == SDL_MOUSEBUTTONUP) {
down_ = false;
const SDL_MouseButtonEvent& e = event.button;
if(current_button_image_set_ == depressed_button_image_set_) {
if(in_widget(e.x,e.y)) {
current_button_image_set_ = focus_button_image_set_;
onclick_();
claimed = true;
} else {
current_button_image_set_ = normal_button_image_set_;
}
}
}
return claimed;
}
widget_ptr button::get_widget_by_id(const std::string& id)
{
if(label_ && label_->get_widget_by_id(id)) {
return label_;
}
return widget::get_widget_by_id(id);
}
variant button::get_value(const std::string& key) const
{
if(key == "label") {
return variant(label_.get());
}
return widget::get_value(key);
}
}
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