Improve things

util/texteditor.c

@@ -0,0 +1,164 @@
+///
+// Created by bruno on 5.2.2025.
+///
+
+#include "texteditor.h"
+#include "font.h"
+
+// Initialize the text editor
+void init_editor(TextEditor *editor, BitmapFont *font, int x, int y, SDL_Renderer *renderer) {
+    for (int i = 0; i < MAX_LINES_ASM; i++) {
+        editor->lines[i].text[0] = '\0';  // Empty string
+        editor->lines[i].active = 0;
+    }
+    editor->lines[0].active = 1;
+    editor->line_count = 1;
+    editor->cursor_line = 0;
+    editor->cursor_line_offset = 0;
+    editor->cursor_pos = 0;
+    editor->readOnly = 0;
+    editor->rect.x = 0;
+    editor->rect.y = 0;
+    editor->rect.w = MAX_LINE_WIDTH * (font->size + 1);
+    editor->rect.h = MAX_LINES_DISPLAY * (font->size + 4);
+    editor->outRect = editor->rect;
+    editor->outRect.x = x;
+    editor->outRect.y = y;
+    editor->font = font;
+    editor->texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, editor->rect.w,
+                                        editor->rect.h);
+}
+
+// Insert a new line at a specific position
+void insert_line(TextEditor *editor, int position, const char *text) {
+    if (editor->line_count >= MAX_LINES_ASM || position < 0 || position > editor->line_count) {
+        printf("Invalid position or max lines reached!\n");
+        return;
+    }
+
+    // Shift lines down if necessary
+    for (int i = editor->line_count; i > position; i--) {
+        strcpy(editor->lines[i].text, editor->lines[i - 1].text);
+        editor->lines[i].active = editor->lines[i - 1].active;
+    }
+
+    strncpy(editor->lines[position].text, text, MAX_LINE_WIDTH);
+    editor->lines[position].text[MAX_LINE_WIDTH] = '\0';  // Ensure null termination
+    editor->lines[position].active = 1;
+
+    editor->line_count++;
+}
+
+void insert_line_rel(TextEditor *editor) {
+    editor->cursor_pos = 0;
+    insert_line(editor, editor->cursor_line + 1, "");
+    editor->cursor_line++;
+}
+
+// Insert a character at the current cursor position
+void insert_character(TextEditor *editor, char ch, SDL_Renderer *renderer) {
+    if (editor->cursor_line < 0 || editor->cursor_line >= editor->line_count) {
+        printf("Invalid cursor position!\n");
+        return;
+    }
+
+    Line *line = &editor->lines[editor->cursor_line];
+    int len = strlen(line->text);
+
+    if (len >= MAX_LINE_WIDTH || editor->cursor_pos > len) {
+        printf("Position out of bounds or line is full!\n");
+        return;
+    }
+
+    // Shift characters to the right
+    for (int i = len; i >= editor->cursor_pos; i--) {
+        line->text[i + 1] = line->text[i];
+    }
+
+    line->text[editor->cursor_pos] = ch;
+    editor->cursor_pos++;
+    generate_string_display(editor, renderer);
+}
+
+// Move cursor
+void move_cursor_relative(TextEditor *editor, int line_offset, int pos_offset) {
+    int new_line = editor->cursor_line + line_offset;
+    int new_pos = editor->cursor_pos + pos_offset;
+
+    if (new_line < 0) new_line = 0;
+    if (new_line >= editor->line_count) new_line = editor->line_count - 1;
+
+    move_cursor(editor, new_line, new_pos);
+}
+
+// Move cursor
+void move_cursor(TextEditor *editor, int new_line, int new_pos) {
+    if (new_line < 0) new_line = 0;
+    if (new_line >= editor->line_count) new_line = editor->line_count - 1;
+
+    int line_length = strlen(editor->lines[new_line].text);
+    if (new_pos < 0) new_pos = 0;
+    if (new_pos > line_length) new_pos = line_length;
+
+    editor->cursor_line = new_line;
+    editor->cursor_pos = new_pos;
+}
+
+// Generate a string from a given offset with a max line count
+void generate_string_display(TextEditor *editor, SDL_Renderer *renderer) {
+    if (editor->cursor_line_offset < 0 || editor->cursor_line_offset >= editor->line_count) {
+        printf("Invalid start line!\n");
+        return;
+    }
+
+    int end_line = editor->cursor_line_offset + MAX_LINES_DISPLAY;
+    if (end_line > editor->line_count) end_line = editor->line_count;
+
+
+    memset(editor->displayString, 0, sizeof(editor->displayString));
+
+    SDL_SetRenderTarget(renderer, editor->texture);
+    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
+    SDL_RenderClear(renderer);
+
+    SDL_Rect charRect;
+    charRect.x = 0;
+    charRect.y = 0;
+    charRect.w = editor->font->size;
+    charRect.h = editor->font->size;
+    SDL_Rect outRect = charRect;
+    outRect.x = 0;
+    outRect.y = 0;
+
+    for (int i = editor->cursor_line_offset; i < end_line; i++) {
+        if (editor->lines[i].active) {
+            strcat(editor->displayString, editor->lines[i].text);
+            char *linePTR = editor->lines[i].text;
+            while (*linePTR) {
+                SDL_RenderCopy(renderer, editor->font->texture[*linePTR], &charRect, &outRect);
+                outRect.x += charRect.w + 1;
+                linePTR++;
+            }
+            strcat(editor->displayString, "\n");
+            outRect.x = 0;
+            outRect.y += charRect.h + 4;
+        }
+    }
+    SDL_SetRenderTarget(renderer, NULL);
+}
+
+void editor_render(TextEditor *editor, SDL_Renderer * renderer) {
+    SDL_RenderCopy(renderer, editor->texture, &editor->rect, &editor->outRect);
+}
+
+// Generate a string for assembling
+void generate_string(TextEditor *editor) {
+    memset(editor->outputString, 0, sizeof(editor->outputString));
+
+    for (int i = 0; i < MAX_LINES_ASM; i++) {
+        if (editor->lines[i].active) {
+            strcat(editor->outputString, editor->lines[i].text);
+            strcat(editor->outputString, "\n");
+        }
+    }
+}