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#include "UI.h"
#include <raylib.h>
const int MAX_LINES = 256;
const int SPACING_H = 1;
const float SCROLL_SENC = 10;
void DrawRecBordered(Rectangle rec, Color bg, Color border_color, int border_width) {
DrawRectangleRounded(rec, 0.015f, 8, bg);
DrawRectangleRoundedLinesEx(rec, 0.015f, 8, border_width, border_color);
}
float MeasureChar(Font *font, int height, char symbol) {
char buf[2] = { symbol, 0 };
return MeasureTextEx(*font, buf, height, SPACING_H).x;
}
int CalculateSpans(Rectangle rec, char *text, Font *font, int height, int *spans) {
spans[0] = 0;
int ptr = 0, span_ptr = 1, last_space_ptr;
float acc = 0;
while (text[ptr] != 0x0) {
char symbol = text[ptr];
float char_width = MeasureChar(font, height, symbol);
acc += char_width + SPACING_H;
if (symbol == ' ' || symbol == '\n') last_space_ptr = ptr;
if (acc > rec.width || symbol == '\n') {
spans[span_ptr] = last_space_ptr + 1;
ptr = last_space_ptr;
span_ptr++;
acc = 0;
}
ptr++;
}
return span_ptr + 1;
}
bool IsMouseInRec(Rectangle rec) {
Vector2 MousePos = GetMousePosition();
return CheckCollisionPointRec(MousePos, rec);
}
void DrawTextInRec(Rectangle rec, char *text, Font *font, int height, Color color, float padding, int *scroll) {
int spans[MAX_LINES];
rec.x += padding;
rec.y += padding;
rec.width -= 2 * padding;
rec.height -= 2 * padding;
int lines = CalculateSpans(rec, text, font, height, spans);
if (lines == 2) {
Vector2 pos = {.x = rec.x, .y = rec.y};
DrawTextEx(*font, text, pos, height, SPACING_H, color);
return;
}
int vertical_acc = rec.y - *scroll;
int text_height = lines * height;
int max_scroll = text_height - rec.height;
if (text_height >= rec.height && IsMouseInRec(rec)) {
*scroll -= GetMouseWheelMove() * SCROLL_SENC;
if (*scroll < 0) *scroll = 0;
if (*scroll > max_scroll) *scroll = max_scroll;
}
BeginScissorMode(rec.x, rec.y, rec.width, rec.height);
for (int i = 1; i < lines; i++) {
Vector2 pos = { .x = rec.x, .y = vertical_acc };
char *line_start = text + spans[i-1];
int line_length = spans[i] - spans[i-1];
DrawTextEx(*font,
TextFormat("%.*s", line_length, line_start),
pos, height, SPACING_H, color);
vertical_acc += height;
}
EndScissorMode();
}
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