#!/usr/bin/env zsh
#
# Demonstration on how to create a GTK GUI using Psalm with ZSH.
#
# November 22, 2022 by Peter van Eerten.
#------------------------------------------------------------------------------------

function comm()
{
    print -p ${@}
    read -p answer
}

# Start psalm
coproc ./psalm

# Send definitions first
comm "DEF libgtk-3.so.0 void gtk_init int int"
comm "DEF libgtk-3.so.0 long gtk_window_new int"
comm "DEF libgtk-3.so.0 void gtk_window_set_title int char*"
comm "DEF libgtk-3.so.0 void gtk_window_set_position long int"
comm "DEF libgtk-3.so.0 long gtk_button_new_with_label char*"
comm "DEF libgtk-3.so.0 long gtk_table_new int int int"
comm "DEF libgtk-3.so.0 void gtk_container_add long long"
comm "DEF libgtk-3.so.0 long gtk_check_button_new_with_label char*"
comm "DEF libgtk-3.so.0 void gtk_table_attach_defaults long long int int int int"
comm "DEF libgtk-3.so.0 long gtk_entry_new void"
comm "DEF libgtk-3.so.0 char* gtk_entry_get_text long"
comm "DEF libgtk-3.so.0 void gtk_main_iteration void"
comm "DEF libgtk-3.so.0 void gtk_widget_show_all int"
comm "DEF libgtk-3.so.0 void gtk_widget_set_size_request long int int"
comm "DEF libgobject-2.0.so.0 long g_signal_connect_data int char* address void* void* int"

# Design GUI
comm "EXE gtk_init NULL NULL"
comm "EXE gtk_window_new 0"; window=${answer}
comm "EXE gtk_window_set_title " ${window} " \"This is a title\""
comm "EXE gtk_window_set_position " ${window} " 1"
comm "EXE gtk_widget_set_size_request " ${window} " 300 300"
comm "EXE gtk_table_new 10 10 1"; table=${answer}
comm "EXE gtk_container_add " ${window} " " ${table}
comm "EXE gtk_button_new_with_label \"Click here\""; button=${answer}
comm "EXE gtk_table_attach_defaults " ${table} " " ${button} " 5 9 7 9"
comm "EXE gtk_check_button_new_with_label \"Check this out!\""; check=${answer}
comm "EXE gtk_table_attach_defaults " ${table} " " ${check} " 1 6 1 2"
comm "EXE gtk_entry_new"; entry=${answer}
comm "EXE gtk_table_attach_defaults " ${table} " " ${entry} " 1 6 3 4"
comm "EXE gtk_widget_show_all" ${window}

# Connect signals
comm "EXE g_signal_connect_data " ${window} " delete-event callback NULL NULL 0"
comm "EXE g_signal_connect_data " ${button} " clicked callback NULL NULL 0"
comm "EXE g_signal_connect_data " ${entry} " activate callback NULL NULL 0"

# Mainloop
while [[ ${event} -ne ${button} && ${event} -ne ${window} ]]
do
    comm "EXE gtk_main_iteration"
    comm "CALLBACK 1"; event=${answer}

    if [[ ${event} -eq $entry ]]
    then
        comm "EXE gtk_entry_get_text " ${entry}
        print ${answer}
    fi
done

comm "EXIT"

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