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#include "text_box.h"
#include "gui/canvas.h"
#include <m-string.h>
#include <furi.h>
#include <gui/elements.h>
#include <stdint.h>
struct TextBox {
View* view;
};
typedef struct {
const char* text;
char* text_pos;
string_t text_formatted;
int32_t scroll_pos;
int32_t scroll_num;
TextBoxFont font;
TextBoxFocus focus;
bool formatted;
} TextBoxModel;
static void text_box_process_down(TextBox* text_box) {
with_view_model(
text_box->view, (TextBoxModel * model) {
if(model->scroll_pos < model->scroll_num - 1) {
model->scroll_pos++;
// Search next line start
while(*model->text_pos++ != '\n')
;
}
return true;
});
}
static void text_box_process_up(TextBox* text_box) {
with_view_model(
text_box->view, (TextBoxModel * model) {
if(model->scroll_pos > 0) {
model->scroll_pos--;
// Reach last symbol of previous line
model->text_pos--;
// Search prevous line start
while((model->text_pos != model->text) && (*(--model->text_pos) != '\n'))
;
if(*model->text_pos == '\n') {
model->text_pos++;
}
}
return true;
});
}
static void text_box_insert_endline(Canvas* canvas, TextBoxModel* model) {
size_t i = 0;
size_t line_width = 0;
const char* str = model->text;
size_t line_num = 0;
const size_t text_width = 140;
while(str[i] != '\0') {
char symb = str[i++];
if(symb != '\n') {
line_width += canvas_glyph_width(canvas, symb) + 1;
if(line_width > text_width) {
line_num++;
line_width = 0;
string_push_back(model->text_formatted, '\n');
}
} else {
line_num++;
line_width = 0;
}
string_push_back(model->text_formatted, symb);
}
line_num++;
model->text = string_get_cstr(model->text_formatted);
model->text_pos = (char*)model->text;
if(model->focus == TextBoxFocusEnd && line_num > 5) {
// Set text position to 5th line from the end
for(uint8_t i = 0; i < line_num - 5; i++) {
while(*model->text_pos++ != '\n') {
};
}
model->scroll_num = line_num - 4;
model->scroll_pos = line_num - 5;
} else {
model->scroll_num = MAX(line_num - 4, 0);
model->scroll_pos = 0;
}
}
static void text_box_view_draw_callback(Canvas* canvas, void* _model) {
TextBoxModel* model = _model;
if(!model->formatted) {
text_box_insert_endline(canvas, model);
model->formatted = true;
}
canvas_clear(canvas);
elements_slightly_rounded_frame(canvas, 0, 0, 124, 64);
if(model->font == TextBoxFontText) {
canvas_set_font(canvas, FontSecondary);
} else if(model->font == TextBoxFontHex) {
canvas_set_font(canvas, FontKeyboard);
}
elements_multiline_text(canvas, 3, 11, model->text_pos);
elements_scrollbar(canvas, model->scroll_pos, model->scroll_num);
}
static bool text_box_view_input_callback(InputEvent* event, void* context) {
furi_assert(context);
TextBox* text_box = context;
bool consumed = false;
if(event->type == InputTypeShort) {
if(event->key == InputKeyDown) {
text_box_process_down(text_box);
consumed = true;
} else if(event->key == InputKeyUp) {
text_box_process_up(text_box);
consumed = true;
}
}
return consumed;
}
TextBox* text_box_alloc() {
TextBox* text_box = malloc(sizeof(TextBox));
text_box->view = view_alloc();
view_set_context(text_box->view, text_box);
view_allocate_model(text_box->view, ViewModelTypeLocking, sizeof(TextBoxModel));
view_set_draw_callback(text_box->view, text_box_view_draw_callback);
view_set_input_callback(text_box->view, text_box_view_input_callback);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->text = NULL;
string_init_set_str(model->text_formatted, "");
model->formatted = false;
model->font = TextBoxFontText;
return true;
});
return text_box;
}
void text_box_free(TextBox* text_box) {
furi_assert(text_box);
with_view_model(
text_box->view, (TextBoxModel * model) {
string_clear(model->text_formatted);
return true;
});
view_free(text_box->view);
free(text_box);
}
View* text_box_get_view(TextBox* text_box) {
furi_assert(text_box);
return text_box->view;
}
void text_box_reset(TextBox* text_box) {
furi_assert(text_box);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->text = NULL;
string_set_str(model->text_formatted, "");
model->font = TextBoxFontText;
model->focus = TextBoxFocusStart;
return true;
});
}
void text_box_set_text(TextBox* text_box, const char* text) {
furi_assert(text_box);
furi_assert(text);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->text = text;
string_reset(model->text_formatted);
string_reserve(model->text_formatted, strlen(text));
model->formatted = false;
return true;
});
}
void text_box_set_font(TextBox* text_box, TextBoxFont font) {
furi_assert(text_box);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->font = font;
return true;
});
}
void text_box_set_focus(TextBox* text_box, TextBoxFocus focus) {
furi_assert(text_box);
with_view_model(
text_box->view, (TextBoxModel * model) {
model->focus = focus;
return true;
});
}
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