Subversion Repositories Games.Descent

/*

 * Portions of this file are copyright Rebirth contributors and licensed as

 * described in COPYING.txt.

 * Portions of this file are copyright Parallax Software and licensed

 * according to the Parallax license below.

 * See COPYING.txt for license details.

THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX

SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO

END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A

ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS

IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS

SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE

FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE

CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS

AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.

COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.

*/

/*

 *

 * Routines for manipulating the button gadgets.

 *

 */

#include <stdlib.h>

#include <string.h>

#include "strutil.h"

#include "u_mem.h"

#include "maths.h"

#include "pstypes.h"

#include "event.h"

#include "gr.h"

#include "ui.h"

#include "mouse.h"

#include "key.h"

namespace dcx {

#define Middle(x) ((2*(x)+1)/4)

#define BUTTON_EXTRA_WIDTH  15

#define BUTTON_EXTRA_HEIGHT 2

int ui_button_any_drawn = 0;

void ui_get_button_size(const grs_font &cv_font, const char *text, int &width, int &height)

{

        gr_get_string_size(cv_font, text, &width, &height, nullptr);

        width += BUTTON_EXTRA_WIDTH * 2 + 6;

        height += BUTTON_EXTRA_HEIGHT * 2 + 6;

}

void ui_draw_button(UI_DIALOG *dlg, UI_GADGET_BUTTON * button)

{

#if 0  //ndef OGL

        if ((button->status==1) || (button->position != button->oldposition))

#endif

        {

                ui_button_any_drawn = 1;

                gr_set_current_canvas( button->canvas );

                auto &canvas = *grd_curcanv;

                color_palette_index color{0};

                gr_set_fontcolor(canvas, dlg->keyboard_focus_gadget == button

                        ? CRED

                        : (!button->user_function && button->dim_if_no_function

                                ? CGREY

                                : CBLACK

                        ), -1);

                button->status = 0;

                if (!button->text.empty())

                {

                        unsigned offset;

                        if (button->position == 0)

                        {

                                ui_draw_box_out(canvas, 0, 0, button->width-1, button->height-1);

                                offset = 0;

                        }

                        else

                        {

                                ui_draw_box_in(canvas, 0, 0, button->width-1, button->height-1);

                                offset = 1;

                        }

                        ui_string_centered(canvas, Middle(button->width) + offset, Middle(button->height) + offset, button->text.c_str());

                } else {

                        unsigned left, top, right, bottom;

                        if (button->position == 0)

                        {

                                left = top = 1;

                                right = button->width - 1;

                                bottom = button->height - 1;

                        }

                        else

                        {

                                left = top = 2;

                                right = button->width;

                                bottom = button->height;

                        }

                        gr_rect(canvas, 0, 0, button->width, button->height, CBLACK);

                        gr_rect(canvas, left, top, right, bottom, color);

                }

        }

}

std::unique_ptr<UI_GADGET_BUTTON> ui_add_gadget_button(UI_DIALOG * dlg, short x, short y, short w, short h, const char * text, int (*function_to_call)())

{

        std::unique_ptr<UI_GADGET_BUTTON> button{ui_gadget_add<UI_GADGET_BUTTON>( dlg, x, y, x+w-1, y+h-1)};

        if ( text )

        {

                button->text = text;

        } else {

                button->text.clear();

        }

        button->width = w;

        button->height = h;

        button->position = 0;

        button->oldposition = 0;

        button->pressed = 0;

        button->user_function = function_to_call;

        button->user_function1 = NULL;

        button->hotkey1= -1;

        button->dim_if_no_function = 0;

        return button;

}

window_event_result ui_button_do(UI_DIALOG *dlg, UI_GADGET_BUTTON * button,const d_event &event)

{

        window_event_result rval = window_event_result::ignored;

        button->oldposition = button->position;

        button->pressed = 0;

        if (event.type == EVENT_MOUSE_BUTTON_DOWN || event.type == EVENT_MOUSE_BUTTON_UP)

        {

                int OnMe;

                OnMe = ui_mouse_on_gadget( button );

                if (B1_JUST_PRESSED && OnMe)

                {

                        button->position = 1;

                        rval = window_event_result::handled;

                }

                else if (B1_JUST_RELEASED)

                {

                        if ((button->position == 1) && OnMe)

                                button->pressed = 1;

                        button->position = 0;

                }

        }

        if (event.type == EVENT_KEY_COMMAND)

        {

                int keypress;

                keypress = event_key_get(event);

                if      ((keypress == button->hotkey) ||

                        ((keypress == button->hotkey1) && button->user_function1) ||

                        ((dlg->keyboard_focus_gadget==button) && ((keypress==KEY_SPACEBAR) || (keypress==KEY_ENTER)) ))

                {

                        button->position = 2;

                        rval = window_event_result::handled;

                }

        }

        else if (event.type == EVENT_KEY_RELEASE)

        {

                int keypress;

                keypress = event_key_get(event);

                button->position = 0;

                if      ((keypress == button->hotkey) ||

                        ((dlg->keyboard_focus_gadget==button) && ((keypress==KEY_SPACEBAR) || (keypress==KEY_ENTER)) ))

                        button->pressed = 1;

                if ((keypress == button->hotkey1) && button->user_function1)

                {

                        button->user_function1();

                        rval = window_event_result::handled;

                }

        }

        if (event.type == EVENT_WINDOW_DRAW)

                ui_draw_button( dlg, button );

        if (button->pressed && button->user_function )

        {

                button->user_function();

                return window_event_result::handled;

        }

        else if (button->pressed)

        {

                rval = ui_gadget_send_event(dlg, EVENT_UI_GADGET_PRESSED, button);

                if (rval == window_event_result::ignored)

                        rval = window_event_result::handled;

        }

        return rval;

}

}