454 lines
16 KiB
C
454 lines
16 KiB
C
//
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// Created by bruno on 5.2.2025.
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// Modified to use dynamic limits.
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//
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#include "texteditor.h"
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#include "font.h"
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#include "../cpu/core.h"
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// Initialize the text editor with dynamic sizes.
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void init_editor(TextEditor *editor, BitmapFont *font, int x, int y, SDL_Renderer *renderer,
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int max_line_width, int max_lines_asm, int max_lines_display, bool readOnly) {
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editor->max_line_width = max_line_width;
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editor->maxLines = max_lines_asm;
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editor->displayLineCount = max_lines_display;
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editor->line_count = 0;
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editor->cursor_line = 0;
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editor->cursor_line_offset = 0;
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editor->cursor_pos = 0;
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editor->readOnly = readOnly;
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editor->font = font;
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editor->outRect = malloc(sizeof(SDL_Rect));
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editor->cursorRect = malloc(sizeof(SDL_Rect));
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editor->rect = malloc(sizeof(SDL_Rect));
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editor->highlightedLineRect = malloc(sizeof(SDL_Rect));
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memset(editor->outRect, 0, sizeof(SDL_Rect));
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memset(editor->cursorRect, 0, sizeof(SDL_Rect));
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memset(editor->rect, 0, sizeof(SDL_Rect));
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memset(editor->highlightedLineRect, 0, sizeof(SDL_Rect));
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// Allocate dynamic array for lines.
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editor->lines = (Line *) malloc(sizeof(Line) * editor->maxLines);
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if (!editor->lines) {
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fprintf(stderr, "Failed to allocate memory for lines.\n");
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exit(EXIT_FAILURE);
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}
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// For each line, allocate memory for the text (including space for '\0')
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for (int i = 0; i < editor->maxLines; i++) {
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editor->lines[i].text = (char *) malloc(sizeof(char) * (editor->max_line_width + 1));
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if (!editor->lines[i].text) {
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fprintf(stderr, "Failed to allocate memory for line %d.\n", i);
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exit(EXIT_FAILURE);
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}
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editor->lines[i].text[0] = '\0';
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editor->lines[i].active = 0;
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}
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// Allocate output and display strings.
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editor->outputString = (char *) malloc(sizeof(char) * (editor->max_line_width * editor->maxLines + 1));
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editor->displayString = (char *) malloc(sizeof(char) * (editor->max_line_width * editor->displayLineCount + 1));
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if (!editor->outputString || !editor->displayString) {
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fprintf(stderr, "Failed to allocate memory for output/display strings.\n");
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exit(EXIT_FAILURE);
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}
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editor->outputString[0] = '\0';
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editor->displayString[0] = '\0';
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// Initialize with two active lines (like the original code).
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editor->lines[0].active = 1;
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editor->lines[1].active = 1;
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editor->line_count = 2;
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// Set up the editor rectangle based on font size and dynamic max_line_width and displayLineCount.
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editor->rect->x = 2;
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editor->rect->y = 2;
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editor->rect->w = editor->max_line_width * (font->size + 1) + ((font->size + 1) / 2);
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editor->rect->h = editor->displayLineCount * (font->size + 1) + 2;
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editor->outRect->w = editor->rect->w;
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editor->outRect->h = editor->rect->h;
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editor->outRect->x = x;
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editor->outRect->y = y;
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editor->highlightedLineRect->x = 2;
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editor->highlightedLineRect->y = 2;
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editor->highlightedLineRect->w = editor->outRect->w - (2 * editor->highlightedLineRect->x);
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editor->highlightedLineRect->h = editor->font->size;
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editor->cursorRect->x = 3 + editor->cursor_pos * font->size + editor->outRect->x;
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editor->cursorRect->y =
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2 + (editor->cursor_line - editor->cursor_line_offset) * (font->size + 1) + editor->outRect->y;
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editor->cursorRect->w = editor->font->size;
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editor->cursorRect->h = editor->font->size;
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// Create texture for rendering.
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editor->texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888,
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SDL_TEXTUREACCESS_TARGET,
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editor->rect->w, editor->rect->h);
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if (!editor->texture) {
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fprintf(stderr, "Failed to create texture: %s\n", SDL_GetError());
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exit(EXIT_FAILURE);
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}
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}
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void insert_line(TextEditor *editor, int position, const char *text, SDL_Renderer *renderer) {
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if (editor->line_count >= editor->maxLines || position < 0 || position > editor->line_count) {
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printf("Invalid position or max lines reached!\n");
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return;
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}
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// Shift lines down.
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for (int i = editor->line_count; i > position; i--) {
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strcpy(editor->lines[i].text, editor->lines[i - 1].text);
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editor->lines[i].active = editor->lines[i - 1].active;
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}
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// Copy the text into the new line, ensuring it does not exceed max_line_width.
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strncpy(editor->lines[position].text, text, editor->max_line_width);
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editor->lines[position].text[editor->max_line_width] = '\0';
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editor->lines[position].active = 1;
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editor->line_count++;
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move_cursor(editor, editor->cursor_line + 1, 0, false, renderer);
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generate_string_display(editor, renderer);
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}
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void insert_line_rel(TextEditor *editor, SDL_Renderer *renderer) {
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int line = editor->cursor_line;
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int pos = editor->cursor_pos;
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char *current_text = editor->lines[line].text;
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// Split the current line at the cursor position
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char new_line_text[editor->max_line_width + 1];
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strcpy(new_line_text, ¤t_text[pos]); // Copy the text after cursor to the new line
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current_text[pos] = '\0'; // Truncate the current line at cursor position
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insert_line(editor, line + 1, new_line_text, renderer);
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editor->cursor_pos = 0;
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}
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void insert_character(TextEditor *editor, char ch, SDL_Renderer *renderer) {
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if (editor->cursor_line < 0 || editor->cursor_line >= editor->line_count) {
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printf("Invalid cursor position!\n");
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return;
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}
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Line *line = &editor->lines[editor->cursor_line];
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int len = strlen(line->text);
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if (len >= editor->max_line_width || editor->cursor_pos > len) {
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printf("Position out of bounds or line is full!\n");
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return;
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}
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// Shift characters to the right.
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for (int i = len; i >= editor->cursor_pos; i--) {
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line->text[i + 1] = line->text[i];
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}
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line->text[editor->cursor_pos] = ch;
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editor->cursor_pos++;
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generate_string_display(editor, renderer);
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}
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void remove_character(TextEditor *editor, bool isDelete, SDL_Renderer *renderer) {
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if (editor->cursor_line < 0 || editor->cursor_line >= editor->line_count) {
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printf("Invalid cursor position!\n");
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return;
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}
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Line *line = &editor->lines[editor->cursor_line];
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int len = strlen(line->text);
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if (isDelete) {
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// Delete character after cursor
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if (editor->cursor_pos < len) {
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for (int i = editor->cursor_pos; i < len; i++) {
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line->text[i] = line->text[i + 1];
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}
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} else if (editor->cursor_pos == len && editor->cursor_line < editor->line_count - 1) {
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// Merge next line with the current line when pressing delete at the end
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strcat(line->text, editor->lines[editor->cursor_line + 1].text);
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// Shift remaining lines up
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for (int i = editor->cursor_line + 1; i < editor->line_count - 1; i++) {
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strcpy(editor->lines[i].text, editor->lines[i + 1].text);
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editor->lines[i].active = editor->lines[i + 1].active;
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}
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editor->lines[editor->line_count - 1].text[0] = '\0';
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editor->lines[editor->line_count - 1].active = 0;
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editor->line_count--;
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}
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} else {
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// Backspace behavior (delete character before cursor)
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if (editor->cursor_pos == 0 && editor->cursor_line > 0) {
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// Append current line to previous line
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int prev_len = strlen(editor->lines[editor->cursor_line - 1].text);
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strcat(editor->lines[editor->cursor_line - 1].text, line->text);
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// Shift lines up
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for (int i = editor->cursor_line; i < editor->line_count - 1; i++) {
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strcpy(editor->lines[i].text, editor->lines[i + 1].text);
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editor->lines[i].active = editor->lines[i + 1].active;
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}
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editor->lines[editor->line_count - 1].text[0] = '\0';
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editor->lines[editor->line_count - 1].active = 0;
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editor->line_count--;
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// Move cursor to the end of the previous line
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editor->cursor_line--;
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editor->cursor_pos = prev_len;
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} else if (editor->cursor_pos > 0) {
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for (int i = editor->cursor_pos - 1; i < len; i++) {
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line->text[i] = line->text[i + 1];
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}
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editor->cursor_pos--;
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}
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}
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generate_string_display(editor, renderer);
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}
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void move_cursor_relative(TextEditor *editor, int line_offset, int pos_offset, bool keepPos, SDL_Renderer *renderer) {
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int new_line = editor->cursor_line + line_offset;
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int new_pos = editor->cursor_pos + pos_offset;
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move_cursor(editor, new_line, new_pos, keepPos, renderer);
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}
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void move_cursor(TextEditor *editor, int new_line, int new_pos, bool keepPos, SDL_Renderer *renderer) {
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if (new_line < 0) new_line = 0;
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int trgt = editor->line_count - editor->displayLineCount;
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if (trgt < 0) {
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trgt = 0;
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}
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if (new_line >= trgt && new_line >= editor->line_count) {
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new_line = editor->line_count -
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1;
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}
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if (keepPos) {
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editor->cursor_line_offset = new_line;
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}
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if (new_line < editor->cursor_line_offset) {
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editor->cursor_line_offset = new_line;
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}
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if (new_line >= editor->cursor_line_offset + editor->displayLineCount) {
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editor->cursor_line_offset = new_line - editor->displayLineCount + 1;
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}
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if (editor->cursor_line_offset >= editor->line_count - editor->displayLineCount) {
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editor->cursor_line_offset = editor->line_count - editor->displayLineCount;
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}
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if (editor->cursor_line_offset < 0) {
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editor->cursor_line_offset = 0;
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}
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int line_length = strlen(editor->lines[new_line].text);
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if (new_pos < 0) new_pos = 0;
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if (new_pos > line_length) new_pos = line_length;
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editor->cursor_line = new_line;
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editor->cursor_pos = new_pos;
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generate_string_display(editor, renderer);
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}
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void generate_string_display(TextEditor *editor, SDL_Renderer *renderer) {
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if (editor->cursor_line_offset < 0 || editor->cursor_line_offset >= editor->line_count) {
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printf("Invalid start line!\n");
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return;
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}
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int end_line = editor->cursor_line_offset + editor->displayLineCount;
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if (end_line > editor->line_count)
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end_line = editor->line_count;
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// Clear the display string.
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editor->displayString[0] = '\0';
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SDL_SetRenderTarget(renderer, editor->texture);
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SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
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SDL_RenderClear(renderer);
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SDL_Rect charDstRect;
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charDstRect.x = 4;
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charDstRect.y = 3;
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charDstRect.w = editor->font->size;
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charDstRect.h = editor->font->size;
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SDL_Rect charRect;
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charRect.x = 0;
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charRect.y = 0;
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charRect.w = editor->font->size;
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charRect.h = editor->font->size;
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editor->cursorRect->x = 3 + editor->cursor_pos * (charDstRect.w + 1) + editor->outRect->x;
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editor->cursorRect->y =
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2 + (editor->cursor_line - editor->cursor_line_offset) * (charDstRect.h + 1) + editor->outRect->y;
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for (int line = editor->cursor_line_offset; line < end_line; line++) {
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if (editor->lines[line].active) {
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strcat(editor->displayString, editor->lines[line].text);
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char *linePTR = editor->lines[line].text;
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while (*linePTR) {
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SDL_RenderCopy(renderer, editor->font->texture[(unsigned char) *linePTR], &charRect, &charDstRect);
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charDstRect.x += charDstRect.w + 1;
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linePTR++;
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}
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strcat(editor->displayString, "\n");
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charDstRect.x = 4;
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charDstRect.y += charDstRect.h + 1;
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}
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}
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SDL_SetRenderTarget(renderer, NULL);
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}
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void editor_render(TextEditor *editor, SDL_Renderer *renderer, CPU *cpu, uint8_t editorIndex, bool isActive,
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bool cursorBlink) {
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if (isActive) {
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SDL_Rect bgRect;
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bgRect = *editor->outRect;
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bgRect.x -= 6;
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bgRect.y -= 6;
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bgRect.w += 12;
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bgRect.h += 12;
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SDL_SetRenderDrawColor(renderer, editor->readOnly ? 128 : 0, editor->readOnly ? 0 : 128, 64, 255);
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SDL_RenderFillRect(renderer, &bgRect);
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}
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SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
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SDL_RenderFillRect(renderer, editor->outRect);
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uint32_t targetLine = 0;
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const uint32_t instrLine = cpu->pc / CPU_INSTRUCTION_SIZE;
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if (editorIndex == 0) {
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targetLine = cpu->addrToLineMapper[instrLine] - editor->cursor_line_offset;
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editor->highlightedLineRect->w = editor->rect->w - 1;
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editor->highlightedLineRect->x = 2;
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}
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if (editorIndex == 1) {
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targetLine = (instrLine / 2) - editor->cursor_line_offset;
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editor->highlightedLineRect->w = (editor->rect->w / 5 * 2) - 2;
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editor->highlightedLineRect->x =
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2 + (11 * editor->font->size) + (instrLine % 2 ? (28 * editor->font->size) : 0);
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}
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editor->highlightedLineRect->y = 2 + ((editor->font->size + 1) * targetLine);
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SDL_Rect highlightedLineAbs = *editor->highlightedLineRect;
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highlightedLineAbs.x += editor->outRect->x;
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highlightedLineAbs.y += editor->outRect->y;
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SDL_SetRenderDrawColor(renderer, 0, 64, 128, 255);
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if (targetLine >= editor->cursor_line_offset &&
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targetLine < editor->cursor_line_offset + editor->displayLineCount) {
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SDL_RenderFillRect(renderer, &highlightedLineAbs);
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}
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SDL_SetTextureBlendMode(editor
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->texture, SDL_BLENDMODE_BLEND);
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SDL_RenderCopy(renderer, editor
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->texture, editor->rect, editor->outRect);
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if (isActive && cursorBlink) {
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SDL_SetRenderDrawColor(renderer,
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0, 255, 255, 128);
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SDL_RenderFillRect(renderer, editor
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->cursorRect);
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}
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}
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void generate_string(TextEditor *editor) {
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editor->outputString[0] = '\0';
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for (int i = 0; i < editor->maxLines; i++) {
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if (editor->lines[i].active) {
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if (strlen(editor->lines[i].text)) {
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strcat(editor->outputString, editor->lines[i].text);
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strcat(editor->outputString, "\n");
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}
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}
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}
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}
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void fill_editor_from_string(TextEditor *editor, const char *content, int lineStart, bool isComplete,
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SDL_Renderer *renderer) {
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if (!editor || !content) {
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printf("Invalid editor or content pointer!\n");
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return;
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}
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char *str = content;
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int numLines = 0;
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while (*str) if (*str++ == '\n') ++numLines;
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// Clear the current editor content
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for (int i = lineStart; i < editor->maxLines && i < lineStart + numLines + 1; i++) {
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editor->lines[i].text[0] = '\0';
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editor->lines[i].active = 0;
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}
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if (isComplete) {
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editor->line_count = numLines;
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if (editor->line_count >= editor->maxLines) {
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editor->line_count = editor->maxLines - 1;
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}
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}
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// Parse the content and fill the editor lines
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const char *ptr = content;
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int line_index = lineStart;
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while (*ptr && line_index < editor->maxLines && line_index < numLines + lineStart) {
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int char_count = 0;
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// Ensure the text buffer does not overflow
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while (*ptr && *ptr != '\n' && char_count < editor->max_line_width) {
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editor->lines[line_index].text[char_count++] = *ptr++;
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}
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editor->lines[line_index].text[char_count] = '\0'; // Null-terminate
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editor->lines[line_index].active = 1;
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line_index++;
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// Move past the newline character if present
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if (*ptr == '\n') ptr++;
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}
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editor->lines[line_index].active = 1;
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// Update the total number of lines in use
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//editor->line_count = line_index + (line_index < editor->maxLines - 1 ? 1 : 0);
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//if (editor->line_count >= editor-> maxLines)
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// Generate the visual representation
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generate_string_display(editor, renderer);
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}
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// Free all dynamically allocated memory.
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void destroy_editor(TextEditor *editor) {
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if (editor->lines) {
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for (int i = 0; i < editor->maxLines; i++) {
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free(editor->lines[i].text);
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}
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free(editor->lines);
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}
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//free(editor->outputString);
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//free(editor->displayString);
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free(editor->outRect);
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free(editor->rect);
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free(editor->cursorRect);
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if (editor->texture) {
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SDL_DestroyTexture(editor->texture);
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}
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}
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