Ken Van Hoeylandt 9a11e6f47b
Implement UI scaling and more (#501)
**New Features**
 * Runtime font accessors and new symbol fonts for text, launcher, statusbar, and shared icons.
 * Added font height base setting to device.properties
 * Text fonts now have 3 sizes: small, default, large

**Improvements**
 * Renamed `UiScale` to `UiDensity`
 * Statusbar, toolbar and many UI components now compute heights and spacing from fonts/density.
 * SSD1306 initialization sequence refined for more stable startup.
 * Multiple image assets replaced by symbol-font rendering.
 * Many layout improvements related to density, font scaling and icon scaling
 * Updated folder name capitalization for newer style
2026-02-15 01:41:47 +01:00

79 lines
2.8 KiB
C

// SPDX-License-Identifier: Apache-2.0
/**
* Dispatcher is a thread-safe code execution queue.
*/
#pragma once
#include <tactility/freertos/freertos.h>
#include <tactility/error.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef void (*DispatcherCallback)(void* context);
typedef void* DispatcherHandle_t;
DispatcherHandle_t dispatcher_alloc(void);
void dispatcher_free(DispatcherHandle_t dispatcher);
/**
* Queue a function to be consumed elsewhere.
*
* @param[in] callbackContext the data to pass to the function upon execution
* @param[in] callback the function to execute elsewhere
* @param[in] timeout lock acquisition timeout
* @retval ERROR_TIMEOUT
* @retval ERROR_RESOURCE when failing to set event
* @retval ERROR_INVALID_STATE when the dispatcher is in the process of shutting down
* @retval ERROR_NONE
*/
error_t dispatcher_dispatch_timed(DispatcherHandle_t dispatcher, void* callbackContext, DispatcherCallback callback, TickType_t timeout);
/**
* Queue a function to be consumed elsewhere.
*
* @param[in] callbackContext the data to pass to the function upon execution
* @param[in] callback the function to execute elsewhere
* @retval ERROR_RESOURCE when failing to set event
* @retval ERROR_TIMEOUT unlikely to occur unless there's an issue with the internal mutex
* @retval ERROR_INVALID_STATE when the dispatcher is in the process of shutting down
* @retval ERROR_NONE
*/
static inline error_t dispatcher_dispatch(DispatcherHandle_t dispatcher, void* callbackContext, DispatcherCallback callback) {
return dispatcher_dispatch_timed(dispatcher, callbackContext, callback, portMAX_DELAY);
}
/**
* Consume 1 or more dispatched functions (if any) until the queue is empty.
*
* @warning The timeout is only the wait time before consuming the message! It is not a limit to the total execution time when calling this method.
*
* @param[in] timeout the ticks to wait for a message
* @retval ERROR_TIMEOUT
* @retval ERROR_RESOURCE failed to wait for event
* @retval ERROR_INVALID_STATE when the dispatcher is in the process of shutting down
* @retval ERROR_NONE
*/
error_t dispatcher_consume_timed(DispatcherHandle_t dispatcher, TickType_t timeout);
/**
* Consume 1 or more dispatched functions (if any) until the queue is empty.
*
* @warning The timeout is only the wait time before consuming the message! It is not a limit to the total execution time when calling this method.
*
* @retval ERROR_TIMEOUT unlikely to occur unless there's an issue with the internal mutex
* @retval ERROR_RESOURCE failed to wait for event
* @retval ERROR_INVALID_STATE when the dispatcher is in the process of shutting down
* @retval ERROR_NONE
*/
static inline error_t dispatcher_consume(DispatcherHandle_t dispatcher) {
return dispatcher_consume_timed(dispatcher, portMAX_DELAY);
}
#ifdef __cplusplus
}
#endif