Gabriele Cosmo
103 lines
2.3 KiB
Plaintext
103 lines
2.3 KiB
Plaintext
// Copyright (C) 2010, Guy Barrand. All rights reserved.
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// See the file tools.license for terms.
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#ifndef tools_sg_states
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#define tools_sg_states
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#include "state"
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//#define TOOLS_SG_STATES_CUR
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namespace tools {
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namespace sg {
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class states {
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public:
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#ifdef TOOLS_SG_STATES_CUR
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states(unsigned int a_ww,unsigned int a_wh)
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:m_states(8)
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,m_state(&(m_states[0]))
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,m_cur_state(0)
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{
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m_state->m_ww = a_ww;
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m_state->m_wh = a_wh;
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}
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#else
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states(unsigned int a_ww,unsigned int a_wh):m_states() {
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m_state.m_ww = a_ww;
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m_state.m_wh = a_wh;
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}
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#endif
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virtual ~states(){}
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protected:
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#ifdef TOOLS_SG_STATES_CUR
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states(const states& a_from)
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:m_states(a_from.m_states)
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,m_state(&(m_states[a_from.m_cur_state]))
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,m_cur_state(a_from.m_cur_state)
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,m_saved_state(a_from.m_saved_state)
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{}
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states& operator=(const states& a_from){
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m_states = a_from.m_states;
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m_state = &(m_states[a_from.m_cur_state]);
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m_cur_state = a_from.m_cur_state;
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m_saved_state = a_from.m_saved_state;
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return *this;
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}
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#else
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states(const states& a_from)
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:m_states(a_from.m_states)
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,m_state(a_from.m_state)
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,m_saved_state(a_from.m_saved_state)
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{}
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states& operator=(const states& a_from){
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m_states = a_from.m_states;
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m_state = a_from.m_state;
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m_saved_state = a_from.m_saved_state;
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return *this;
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}
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#endif
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public:
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#ifdef TOOLS_SG_STATES_CUR
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const sg::state& state() const {return *m_state;}
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sg::state& state() {return *m_state;}
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void pop_state() {
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m_state = &(m_states[m_cur_state]);
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m_cur_state--;
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}
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void push_state() {
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if((m_cur_state+1)>=(int)m_states.size()) {
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m_states.resize(m_states.size()+5);
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}
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m_cur_state++;
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m_states[m_cur_state] = *m_state;
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}
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#else
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const sg::state& state() const {return m_state;}
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sg::state& state() {return m_state;}
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void pop_state() {
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//if(!m_states.size()) return; //throw.
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m_state = m_states.back();
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m_states.pop_back();
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}
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void push_state() {m_states.push_back(m_state);}
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#endif
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void save_state(const sg::state& a_state) {m_saved_state = a_state;}
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const sg::state& saved_state() const {return m_saved_state;}
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sg::state& saved_state() {return m_saved_state;}
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protected:
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std::vector<sg::state> m_states;
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#ifdef TOOLS_SG_STATES_CUR
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sg::state* m_state;
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int m_cur_state;
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#else
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sg::state m_state;
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#endif
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sg::state m_saved_state;
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};
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}}
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#endif
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