21241471c6
Use structured bindings to capture the values on return, so that they can be declared as `const` if they are immutable after initial computation.
167 lines
4.7 KiB
C++
167 lines
4.7 KiB
C++
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license below.
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* See COPYING.txt for license details.
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "u_mem.h"
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#include "maths.h"
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#include "pstypes.h"
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#include "event.h"
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#include "gr.h"
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#include "ui.h"
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#include "key.h"
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#include "mouse.h"
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namespace dcx {
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namespace {
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void ui_draw_inputbox(UI_DIALOG &dlg, UI_GADGET_INPUTBOX &inputbox)
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{
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#if 0 //ndef OGL
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if ((inputbox->status==1) || (inputbox->position != inputbox->oldposition))
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#endif
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{
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gr_set_current_canvas(inputbox.canvas);
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auto &canvas = *grd_curcanv;
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gr_rect(canvas, 0, 0, inputbox.width - 1, inputbox.height - 1, CBLACK);
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const auto &&[w, h] = gr_get_string_size(*canvas.cv_font, inputbox.text.get());
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if (dlg.keyboard_focus_gadget == &inputbox)
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{
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if (inputbox.first_time)
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{
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gr_set_fontcolor(canvas, CBLACK, -1);
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gr_rect(canvas, 2, 2, 2 + w, 2 + h, CRED);
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}
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else
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gr_set_fontcolor(canvas, CRED, -1);
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}
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else
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gr_set_fontcolor(canvas, CWHITE, -1);
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gr_string(canvas, *canvas.cv_font, 2, 2, inputbox.text.get(), w, h);
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if (dlg.keyboard_focus_gadget == &inputbox && !inputbox.first_time)
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{
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const uint8_t cred = CRED;
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Vline(canvas, 2, inputbox.height - 3, 3 + w, cred);
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Vline(canvas, 2, inputbox.height - 3, 4 + w, cred);
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}
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}
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}
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}
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std::unique_ptr<UI_GADGET_INPUTBOX> ui_add_gadget_inputbox(UI_DIALOG &dlg, const short x, const short y, const uint_fast32_t length_of_initial_text, const uint_fast32_t maximum_allowed_text_length, const char *const initial_text)
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{
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const auto aw = grd_curcanv->cv_font->ft_w;
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const auto h = gr_get_string_size(*grd_curcanv->cv_font, nullptr).height;
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auto inputbox = ui_gadget_add<UI_GADGET_INPUTBOX>(dlg, x, y, x + aw * maximum_allowed_text_length - 1, y + h - 1 + 4);
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inputbox->text = std::make_unique<char[]>(length_of_initial_text + 1);
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const auto allocated_text = inputbox->text.get();
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allocated_text[length_of_initial_text] = 0;
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memcpy(allocated_text, initial_text, length_of_initial_text);
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inputbox->position = length_of_initial_text;
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inputbox->oldposition = inputbox->position;
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inputbox->width = aw * maximum_allowed_text_length;
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inputbox->height = h+4;
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inputbox->length = length_of_initial_text;
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inputbox->pressed = 0;
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inputbox->first_time = 1;
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return inputbox;
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}
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window_event_result UI_GADGET_INPUTBOX::event_handler(UI_DIALOG &dlg, const d_event &event)
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{
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const auto keypress = (event.type == EVENT_KEY_COMMAND)
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? event_key_get(event)
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: 0u;
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oldposition = position;
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pressed=0;
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window_event_result rval = window_event_result::ignored;
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if (dlg.keyboard_focus_gadget == this)
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{
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switch( keypress )
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{
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case 0:
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break;
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case (KEY_LEFT):
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case (KEY_BACKSP):
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if (position > 0)
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position--;
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text[position] = 0;
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if (first_time) first_time = 0;
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rval = window_event_result::handled;
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break;
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case (KEY_ENTER):
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pressed=1;
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if (first_time) first_time = 0;
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rval = window_event_result::handled;
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break;
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default:
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{
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const uint8_t ascii = key_ascii();
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if ((ascii < 255 ) && (position < length-2))
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{
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if (first_time) {
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first_time = 0;
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position = 0;
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}
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text[position++] = ascii;
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text[position] = 0;
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rval = window_event_result::handled;
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}
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break;
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}
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}
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} else {
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first_time = 1;
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}
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if (pressed)
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{
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rval = ui_gadget_send_event(dlg, EVENT_UI_GADGET_PRESSED, *this);
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if (rval == window_event_result::ignored)
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rval = window_event_result::handled;
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}
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if (event.type == EVENT_WINDOW_DRAW)
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ui_draw_inputbox(dlg, *this);
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return rval;
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}
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void ui_inputbox_set_text(UI_GADGET_INPUTBOX *inputbox, const char *text)
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{
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auto ltext = std::min(static_cast<std::size_t>(inputbox->length), strlen(text));
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memcpy(inputbox->text.get(), text, ltext);
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inputbox->text[ltext] = 0;
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inputbox->position = ltext;
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inputbox->oldposition = inputbox->position;
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inputbox->first_time = 1; // select all
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}
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}
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