2021-07-08 20:41:34 +00:00
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#include "text_box.h"
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#include "gui/canvas.h"
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#include <m-string.h>
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#include <furi.h>
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#include <gui/elements.h>
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#include <stdint.h>
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struct TextBox {
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View* view;
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};
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typedef struct {
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const char* text;
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char* text_pos;
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string_t text_formatted;
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2022-02-02 19:59:28 +00:00
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int32_t scroll_pos;
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int32_t scroll_num;
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2021-07-08 20:41:34 +00:00
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TextBoxFont font;
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2022-02-02 19:59:28 +00:00
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TextBoxFocus focus;
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2021-07-08 20:41:34 +00:00
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bool formatted;
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} TextBoxModel;
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static void text_box_process_down(TextBox* text_box) {
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with_view_model(
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text_box->view, (TextBoxModel * model) {
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if(model->scroll_pos < model->scroll_num - 1) {
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model->scroll_pos++;
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// Search next line start
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while(*model->text_pos++ != '\n')
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;
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}
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return true;
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});
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}
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static void text_box_process_up(TextBox* text_box) {
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with_view_model(
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text_box->view, (TextBoxModel * model) {
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if(model->scroll_pos > 0) {
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model->scroll_pos--;
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// Reach last symbol of previous line
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model->text_pos--;
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// Search prevous line start
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while((model->text_pos != model->text) && (*(--model->text_pos) != '\n'))
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;
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if(*model->text_pos == '\n') {
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model->text_pos++;
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}
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}
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return true;
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});
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}
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static void text_box_insert_endline(Canvas* canvas, TextBoxModel* model) {
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size_t i = 0;
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size_t line_width = 0;
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const char* str = model->text;
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size_t line_num = 0;
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const size_t text_width = 140;
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while(str[i] != '\0') {
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char symb = str[i++];
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if(symb != '\n') {
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line_width += canvas_glyph_width(canvas, symb) + 1;
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if(line_width > text_width) {
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line_num++;
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line_width = 0;
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string_push_back(model->text_formatted, '\n');
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}
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} else {
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line_num++;
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line_width = 0;
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}
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string_push_back(model->text_formatted, symb);
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}
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line_num++;
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model->text = string_get_cstr(model->text_formatted);
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model->text_pos = (char*)model->text;
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if(model->focus == TextBoxFocusEnd && line_num > 5) {
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// Set text position to 5th line from the end
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for(uint8_t i = 0; i < line_num - 5; i++) {
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while(*model->text_pos++ != '\n') {
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};
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}
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model->scroll_num = line_num - 4;
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model->scroll_pos = line_num - 5;
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} else {
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model->scroll_num = MAX(line_num - 4, 0);
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model->scroll_pos = 0;
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}
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2021-07-08 20:41:34 +00:00
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}
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static void text_box_view_draw_callback(Canvas* canvas, void* _model) {
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TextBoxModel* model = _model;
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if(!model->formatted) {
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text_box_insert_endline(canvas, model);
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model->formatted = true;
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}
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canvas_clear(canvas);
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elements_slightly_rounded_frame(canvas, 0, 0, 124, 64);
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if(model->font == TextBoxFontText) {
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canvas_set_font(canvas, FontSecondary);
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} else if(model->font == TextBoxFontHex) {
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canvas_set_font(canvas, FontKeyboard);
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}
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elements_multiline_text(canvas, 3, 11, model->text_pos);
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elements_scrollbar(canvas, model->scroll_pos, model->scroll_num);
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}
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static bool text_box_view_input_callback(InputEvent* event, void* context) {
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furi_assert(context);
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TextBox* text_box = context;
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bool consumed = false;
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if(event->type == InputTypeShort) {
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if(event->key == InputKeyDown) {
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text_box_process_down(text_box);
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consumed = true;
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} else if(event->key == InputKeyUp) {
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text_box_process_up(text_box);
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consumed = true;
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}
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}
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return consumed;
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}
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TextBox* text_box_alloc() {
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TextBox* text_box = furi_alloc(sizeof(TextBox));
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text_box->view = view_alloc();
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view_set_context(text_box->view, text_box);
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view_allocate_model(text_box->view, ViewModelTypeLocking, sizeof(TextBoxModel));
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view_set_draw_callback(text_box->view, text_box_view_draw_callback);
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view_set_input_callback(text_box->view, text_box_view_input_callback);
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with_view_model(
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text_box->view, (TextBoxModel * model) {
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model->text = NULL;
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string_init_set_str(model->text_formatted, "");
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model->formatted = false;
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model->font = TextBoxFontText;
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return true;
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});
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return text_box;
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}
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void text_box_free(TextBox* text_box) {
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furi_assert(text_box);
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with_view_model(
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text_box->view, (TextBoxModel * model) {
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string_clear(model->text_formatted);
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return true;
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});
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view_free(text_box->view);
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free(text_box);
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}
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View* text_box_get_view(TextBox* text_box) {
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furi_assert(text_box);
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return text_box->view;
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}
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2022-01-21 17:32:03 +00:00
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void text_box_reset(TextBox* text_box) {
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2021-07-08 20:41:34 +00:00
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furi_assert(text_box);
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with_view_model(
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text_box->view, (TextBoxModel * model) {
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model->text = NULL;
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string_set_str(model->text_formatted, "");
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model->font = TextBoxFontText;
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model->focus = TextBoxFocusStart;
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return true;
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});
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}
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void text_box_set_text(TextBox* text_box, const char* text) {
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furi_assert(text_box);
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furi_assert(text);
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with_view_model(
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text_box->view, (TextBoxModel * model) {
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model->text = text;
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string_reset(model->text_formatted);
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string_reserve(model->text_formatted, strlen(text));
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model->formatted = false;
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return true;
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});
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}
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void text_box_set_font(TextBox* text_box, TextBoxFont font) {
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furi_assert(text_box);
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with_view_model(
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text_box->view, (TextBoxModel * model) {
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model->font = font;
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return true;
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});
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}
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2022-02-02 19:59:28 +00:00
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void text_box_set_focus(TextBox* text_box, TextBoxFocus focus) {
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furi_assert(text_box);
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2022-02-02 19:59:28 +00:00
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with_view_model(
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text_box->view, (TextBoxModel * model) {
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model->focus = focus;
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return true;
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});
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2021-07-08 20:41:34 +00:00
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}
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