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https://github.com/DarkFlippers/unleashed-firmware.git
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105 lines
3.9 KiB
C
105 lines
3.9 KiB
C
/* Copyright (C) 2022-2023 Salvatore Sanfilippo -- All Rights Reserved
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* See the LICENSE file for information about the license. */
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#include "app.h"
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/* =========================== Subview handling ================================
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* Note that these are not the Flipper subviews, but the subview system
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* implemented inside ProtoView.
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* ========================================================================== */
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/* Return the ID of the currently selected subview, of the current
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* view. */
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int get_current_subview(ProtoViewApp *app) {
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return app->current_subview[app->current_view];
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}
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/* Called by view rendering callback that has subviews, to show small triangles
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* facing down/up if there are other subviews the user can access with up
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* and down. */
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void show_available_subviews(Canvas *canvas, ProtoViewApp *app,
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int last_subview)
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{
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int subview = get_current_subview(app);
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if (subview != 0)
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canvas_draw_triangle(canvas,120,5,8,5,CanvasDirectionBottomToTop);
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if (subview != last_subview-1)
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canvas_draw_triangle(canvas,120,59,8,5,CanvasDirectionTopToBottom);
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}
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/* Handle up/down keys when we are in a subview. If the function catched
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* such keypress, it returns true, so that the actual view input callback
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* knows it can just return ASAP without doing anything. */
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bool process_subview_updown(ProtoViewApp *app, InputEvent input, int last_subview) {
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int subview = get_current_subview(app);
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if (input.type == InputTypePress) {
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if (input.key == InputKeyUp) {
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if (subview != 0)
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app->current_subview[app->current_view]--;
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return true;
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} else if (input.key == InputKeyDown) {
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if (subview != last_subview-1)
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app->current_subview[app->current_view]++;
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return true;
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}
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}
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return false;
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}
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/* ============================= Text input ====================================
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* Normally we just use our own private UI widgets. However for the text input
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* widget, that is quite complex, visualizes a keyboard and must be standardized
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* for user coherent experience, we use the one provided by the Flipper
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* framework. The following two functions allow to show the keyboard to get
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* text and later dismiss it.
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* ========================================================================== */
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/* Show the keyboard, take the user input and store it into the specified
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* 'buffer' of 'buflen' total bytes. When the user is done, the done_callback
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* is called passing the application context to it. Such callback needs
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* to do whatever it wants with the input buffer and dismissi the keyboard
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* calling: dismiss_keyboard(app);
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*
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* Note: if the buffer is not a null-termined zero string, what it contains will
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* be used as initial input for the user. */
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void show_keyboard(ProtoViewApp *app, char *buffer, uint32_t buflen,
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void (*done_callback)(void*))
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{
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app->show_text_input = true;
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app->text_input_buffer = buffer;
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app->text_input_buffer_len = buflen;
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app->text_input_done_callback = done_callback;
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}
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void dismiss_keyboard(ProtoViewApp *app) {
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view_dispatcher_stop(app->view_dispatcher);
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}
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/* =========================== Canvas extensions ============================ */
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void canvas_draw_str_with_border(Canvas* canvas, uint8_t x, uint8_t y, const char* str, Color text_color, Color border_color)
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{
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struct {
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uint8_t x; uint8_t y;
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} dir[8] = {
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{-1,-1},
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{0,-1},
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{1,-1},
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{1,0},
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{1,1},
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{0,1},
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{-1,1},
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{-1,0}
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};
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/* Rotate in all the directions writing the same string to create a
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* border, then write the actual string in the other color in the
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* middle. */
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canvas_set_color(canvas, border_color);
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for (int j = 0; j < 8; j++)
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canvas_draw_str(canvas,x+dir[j].x,y+dir[j].y,str);
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canvas_set_color(canvas, text_color);
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canvas_draw_str(canvas,x,y,str);
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canvas_set_color(canvas, ColorBlack);
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}
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