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#ifndef slic3r_GUI_BackgroundSlicingProcess_hpp_
#define slic3r_GUI_BackgroundSlicingProcess_hpp_
#include <string>
#include <condition_variable>
#include <mutex>
#include <thread>
namespace Slic3r {
class DynamicPrintConfig;
class GCodePreviewData;
class Print;
// Support for the GUI background processing (Slicing and G-code generation).
// As of now this class is not declared in Slic3r::GUI due to the Perl bindings limits.
class BackgroundSlicingProcess
{
public:
BackgroundSlicingProcess();
// Stop the background processing and finalize the bacgkround processing thread, remove temp files.
~BackgroundSlicingProcess();
void set_print(Print *print) { m_print = print; }
void set_gcode_preview_data(GCodePreviewData *gpd) { m_gcode_preview_data = gpd; }
// The following wxCommandEvent will be sent to the UI thread / Platter window, when the slicing is finished
// and the background processing will transition into G-code export.
// The wxCommandEvent is sent to the UI thread asynchronously without waiting for the event to be processed.
void set_sliced_event(int event_id) { m_event_sliced_id = event_id; }
// The following wxCommandEvent will be sent to the UI thread / Platter window, when the G-code export is finished.
// The wxCommandEvent is sent to the UI thread asynchronously without waiting for the event to be processed.
void set_finished_event(int event_id) { m_event_finished_id = event_id; }
// Set the output path of the G-code.
void set_output_path(const std::string &path) { m_output_path = path; }
// Start the background processing. Returns false if the background processing was already running.
bool start();
// Cancel the background processing. Returns false if the background processing was not running.
// A stopped background processing may be restarted with start().
bool stop();
// Apply config over the print. Returns false, if the new config values caused any of the already
// processed steps to be invalidated, therefore the task will need to be restarted.
bool apply_config(const DynamicPrintConfig &config);
enum State {
// m_thread is not running yet, or it did not reach the STATE_IDLE yet (it does not wait on the condition yet).
STATE_INITIAL = 0,
// m_thread is waiting for the task to execute.
STATE_IDLE,
STATE_STARTED,
// m_thread is executing a task.
STATE_RUNNING,
// m_thread finished executing a task, and it is waiting until the UI thread picks up the results.
STATE_FINISHED,
// m_thread finished executing a task, the task has been canceled by the UI thread, therefore the UI thread will not be notified.
STATE_CANCELED,
// m_thread exited the loop and it is going to finish. The UI thread should join on m_thread.
STATE_EXIT,
STATE_EXITED,
};
State state() const { return m_state; }
bool idle() const { return m_state == STATE_IDLE; }
bool running() const { return m_state == STATE_STARTED || m_state == STATE_RUNNING || m_state == STATE_FINISHED || m_state == STATE_CANCELED; }
private:
void thread_proc();
void join_background_thread();
Print *m_print = nullptr;
// Data structure, to which the G-code export writes its annotations.
GCodePreviewData *m_gcode_preview_data = nullptr;
std::string m_temp_output_path;
std::string m_output_path;
// Thread, on which the background processing is executed. The thread will always be present
// and ready to execute the slicing process.
std::thread m_thread;
// Mutex and condition variable to synchronize m_thread with the UI thread.
std::mutex m_mutex;
std::condition_variable m_condition;
State m_state = STATE_INITIAL;
// wxWidgets command ID to be sent to the platter to inform that the slicing is finished, and the G-code export will continue.
int m_event_sliced_id = 0;
// wxWidgets command ID to be sent to the platter to inform that the task finished.
int m_event_finished_id = 0;
};
}; // namespace Slic3r
#endif /* slic3r_GUI_BackgroundSlicingProcess_hpp_ */
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