Files
pebble/src/fw/apps/demo_apps/text_clipping.c
2025-01-27 11:38:16 -08:00

239 lines
8.2 KiB
C

/*
* Copyright 2024 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "text_clipping.h"
#include "applib/app.h"
#include "applib/fonts/fonts.h"
#include "applib/ui/ui.h"
#include "kernel/pbl_malloc.h"
#include "process_management/app_manager.h"
#include "process_state/app_state/app_state.h"
#include "system/logging.h"
typedef enum {
SelectIndexPixels,
SelectIndexDirection,
SelectIndexOverflow,
// Add new selection criteria above
SelectIndexMax
} SelectIndex;
typedef struct AppState {
Window window;
Layer canvas;
GSize canvas_size;
TextLayer text_layer;
TextLayer direction_layer;
TextLayer word_wrap_layer;
SelectIndex select_index;
bool up_down_direction; // True = move up or down; False = move left or right
bool word_wrap; // True = word wrap; False = don't word wrap
} AppState;
static const char* text_buffer = "Text Clipping";
static void init_text_layer(AppState *data, GRect frame) {
text_layer_init(&data->text_layer, &GRect(frame.origin.x, frame.origin.y,
frame.size.w, frame.size.h));
text_layer_set_background_color(&data->text_layer, GColorWhite);
text_layer_set_text_color(&data->text_layer, GColorBlack);
text_layer_set_text(&data->text_layer, text_buffer);
GFont gothic_24_bold = fonts_get_system_font(FONT_KEY_GOTHIC_24_BOLD);
text_layer_set_font(&data->text_layer, gothic_24_bold);
text_layer_set_text_alignment(&data->text_layer, GTextAlignmentCenter);
text_layer_set_overflow_mode(&data->text_layer, GTextOverflowModeTrailingEllipsis);
}
static void click_handler(ClickRecognizerRef recognizer, Window *window) {
AppState *data = window_get_user_data(window);
ButtonId button = click_recognizer_get_button_id(recognizer);
GRect frame = data->text_layer.layer.frame;
if (button == BUTTON_ID_UP) {
if (data->select_index == SelectIndexPixels) {
// Do inverse
if (data->up_down_direction) {
frame.origin.y--;
} else {
frame.origin.x--;
}
} else if (data->select_index == SelectIndexDirection) {
data->up_down_direction = !(data->up_down_direction);
} else if (data->select_index == SelectIndexOverflow) {
data->word_wrap = !(data->word_wrap);
}
} else if (button == BUTTON_ID_SELECT) {
data->select_index = (data->select_index + 1) % SelectIndexMax;
} else if (button == BUTTON_ID_DOWN) {
if (data->select_index == SelectIndexPixels) {
// Do inverse
if (data->up_down_direction) {
frame.origin.y++;
} else {
frame.origin.x++;
}
} else if (data->select_index == SelectIndexDirection) {
data->up_down_direction = !(data->up_down_direction);
} else if (data->select_index == SelectIndexOverflow) {
data->word_wrap = !(data->word_wrap);
}
}
text_layer_set_text_color(&data->direction_layer, GColorBlack);
text_layer_set_background_color(&data->direction_layer, GColorWhite);
text_layer_set_text_color(&data->word_wrap_layer, GColorBlack);
text_layer_set_background_color(&data->word_wrap_layer, GColorWhite);
if (data->select_index == SelectIndexDirection) {
text_layer_set_text_color(&data->direction_layer, GColorWhite);
text_layer_set_background_color(&data->direction_layer, GColorBlack);
} else if (data->select_index == SelectIndexOverflow) {
text_layer_set_text_color(&data->word_wrap_layer, GColorWhite);
text_layer_set_background_color(&data->word_wrap_layer, GColorBlack);
}
if (data->up_down_direction) {
text_layer_set_text(&data->direction_layer, "Direction: Up/Down");
} else {
text_layer_set_text(&data->direction_layer, "Direction: Left/Right");
}
if (data->word_wrap) {
frame.size.w = 72;
frame.size.h = 60;
} else {
frame.size.w = 72;
frame.size.h = 32;
}
init_text_layer(data, frame);
if (data->word_wrap) {
text_layer_set_text(&data->word_wrap_layer, "Overflow: Word Wrap");
text_layer_set_overflow_mode(&data->text_layer, GTextOverflowModeWordWrap);
} else {
text_layer_set_text(&data->word_wrap_layer, "Overflow: Ellipsis");
text_layer_set_overflow_mode(&data->text_layer, GTextOverflowModeTrailingEllipsis);
}
}
static void config_provider(Window *window) {
window_single_repeating_click_subscribe(BUTTON_ID_UP, 100, (ClickHandler)click_handler);
window_single_repeating_click_subscribe(BUTTON_ID_SELECT, 100, (ClickHandler)click_handler);
window_single_repeating_click_subscribe(BUTTON_ID_DOWN, 100, (ClickHandler)click_handler);
(void)window;
}
static void update_window(Layer *layer, GContext *ctx) {
// Clear parent layer first
graphics_context_set_fill_color(ctx, GColorWhite);
graphics_fill_rect(ctx, &GRect(39, 39, 82, 42));
// Draw box just outside the clipping area
graphics_draw_rect(ctx, &GRect(39, 39, 82, 42));
}
static void prv_window_load(Window *window) {
AppState *data = window_get_user_data(window);
data->select_index = SelectIndexPixels;
data->up_down_direction = true;
data->word_wrap = false;
// Init canvas (i.e. clipping box)
data->canvas_size = GSize(80, 40);
layer_init(&data->canvas, &GRect(40, 40, data->canvas_size.w, data->canvas_size.h));
layer_add_child(&data->window.layer, &data->canvas);
// Init text layer
init_text_layer(data, GRect(4, 4, 72, 32));
// Init direction layer
text_layer_init(&data->direction_layer, &GRect(5, 100, 135, 20));
text_layer_set_background_color(&data->direction_layer, GColorWhite);
text_layer_set_text_color(&data->direction_layer, GColorBlack);
text_layer_set_text(&data->direction_layer, "Direction: Up/Down");
GFont gothic_14_bold = fonts_get_system_font(FONT_KEY_GOTHIC_14_BOLD);
text_layer_set_font(&data->direction_layer, gothic_14_bold);
text_layer_set_text_alignment(&data->direction_layer, GTextAlignmentCenter);
text_layer_set_overflow_mode(&data->direction_layer, GTextOverflowModeTrailingEllipsis);
// Init word wrap layer
text_layer_init(&data->word_wrap_layer, &GRect(5, 130, 135, 20));
text_layer_set_background_color(&data->word_wrap_layer, GColorWhite);
text_layer_set_text_color(&data->word_wrap_layer, GColorBlack);
text_layer_set_text(&data->word_wrap_layer, "Overflow: Ellipsis");
text_layer_set_font(&data->word_wrap_layer, gothic_14_bold);
text_layer_set_text_alignment(&data->word_wrap_layer, GTextAlignmentCenter);
text_layer_set_overflow_mode(&data->word_wrap_layer, GTextOverflowModeTrailingEllipsis);
// Setup children for clipping canvas
layer_add_child(&data->canvas, &data->text_layer.layer);
// Setup children for main window canvas
layer_add_child(&window->layer, &data->direction_layer.layer);
layer_add_child(&window->layer, &data->word_wrap_layer.layer);
// Setup update proc to draw clipping box
layer_set_update_proc(&window->layer, update_window);
}
static void push_window(struct AppState *data) {
Window* window = &data->window;
window_init(window, WINDOW_NAME("Text Clipping"));
window_set_user_data(window, data);
window_set_click_config_provider(window, (ClickConfigProvider) config_provider);
window_set_window_handlers(window, &(WindowHandlers) {
.load = prv_window_load,
});
const bool animated = true;
app_window_stack_push(window, animated);
}
////////////////////
// App boilerplate
static void handle_init(void) {
struct AppState* data = app_malloc_check(sizeof(struct AppState));
app_state_set_user_data(data);
push_window(data);
}
static void handle_deinit(void) {
struct AppState* data = app_state_get_user_data();
app_free(data);
}
static void s_main(void) {
handle_init();
app_event_loop();
handle_deinit();
}
const PebbleProcessMd* text_clipping_app_get_info() {
static const PebbleProcessMdSystem text_spacing_info = {
.common.main_func = &s_main,
.name = "Text Clipping"
};
return (const PebbleProcessMd*) &text_spacing_info;
}