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Add progress updated signal to gds output renderer that can be used when called asynchronously

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This commit is contained in:
Mario Hüttel
2019-08-22 18:55:14 +02:00
parent 32b8c4ccd3
commit 4115fd97af
2 changed files with 99 additions and 5 deletions
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10
include/gds-render/output-renderers/gds-output-renderer.h
View File

@@ -144,6 +144,16 @@ void gds_output_renderer_set_layer_settings(GdsOutputRenderer *renderer, LayerSe
*/
int gds_output_renderer_render_output_async(GdsOutputRenderer *renderer, struct gds_cell *cell, double scale);
/**
* @brief This function emits the 'progress-changed' in the thread/context that triggered an asynchronous rendering
*
* If the rendering is not asynchronous, this function has no effect.
*
* @param renderer GdsOutputrenderer object
* @param status Status to supply to signal emission
*/
void gds_output_renderer_update_gui_status_from_async(GdsOutputRenderer *renderer, const char *status);
G_END_DECLS
#endif /* _GDS_OUTPUT_RENDERER_H_ */

94
output-renderers/gds-output-renderer.c
View File

@@ -38,13 +38,20 @@ struct renderer_params {
double scale;
};
struct idle_function_params {
GMutex message_lock;
char *status_message;
};
typedef struct {
gchar *output_file;
LayerSettings *layer_settings;
GMutex settings_lock;
gboolean mutex_init_status;
GTask *task;
GMainContext *main_context;
struct renderer_params async_params;
struct idle_function_params idle_function_parameters;
gpointer padding[11];
} GdsOutputRendererPrivate;
@@ -56,7 +63,7 @@ enum {
G_DEFINE_TYPE_WITH_PRIVATE(GdsOutputRenderer, gds_output_renderer, G_TYPE_OBJECT)
enum gds_output_renderer_signal_ids {ASYNC_FINISHED = 0, ASYNC_PROGRESS_UPDATE, GDS_OUTPUT_RENDERER_SIGNAL_COUNT};
enum gds_output_renderer_signal_ids {ASYNC_FINISHED = 0, ASYNC_PROGRESS_CHANGED, GDS_OUTPUT_RENDERER_SIGNAL_COUNT};
static guint gds_output_renderer_signals[GDS_OUTPUT_RENDERER_SIGNAL_COUNT];
static int gds_output_renderer_render_dummy(GdsOutputRenderer *renderer,
@@ -83,6 +90,11 @@ static void gds_output_renderer_dispose(GObject *self_obj)
g_mutex_lock(&priv->settings_lock);
g_mutex_unlock(&priv->settings_lock);
g_mutex_clear(&priv->settings_lock);
g_mutex_lock(&priv->idle_function_parameters.message_lock);
g_mutex_unlock(&priv->idle_function_parameters.message_lock);
g_mutex_clear(&priv->idle_function_parameters.message_lock);
priv->mutex_init_status = FALSE;
}
@@ -150,6 +162,7 @@ static GParamSpec *gds_output_renderer_properties[N_PROPERTIES] = {NULL};
static void gds_output_renderer_class_init(GdsOutputRendererClass *klass)
{
GObjectClass *oclass = G_OBJECT_CLASS(klass);
GType progress_changed_param_types[1] = {G_TYPE_POINTER};
klass->render_output = gds_output_renderer_render_dummy;
@@ -157,6 +170,7 @@ static void gds_output_renderer_class_init(GdsOutputRendererClass *klass)
oclass->set_property = gds_output_renderer_set_property;
oclass->get_property = gds_output_renderer_get_property;
/* Setup properties */
gds_output_renderer_properties[PROP_OUTPUT_FILE] =
g_param_spec_string("output-file", "output file", "Output file for renderer",
@@ -178,16 +192,16 @@ static void gds_output_renderer_class_init(GdsOutputRendererClass *klass)
G_TYPE_NONE,
0,
NULL);
gds_output_renderer_signals[ASYNC_PROGRESS_UPDATE] =
g_signal_newv("progress-update", GDS_RENDER_TYPE_OUTPUT_RENDERER,
gds_output_renderer_signals[ASYNC_PROGRESS_CHANGED] =
g_signal_newv("progress-changed", GDS_RENDER_TYPE_OUTPUT_RENDERER,
G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE,
NULL,
NULL,
NULL,
NULL,
G_TYPE_NONE,
0,
NULL);
1,
progress_changed_param_types);
}
void gds_output_renderer_init(GdsOutputRenderer *self)
@@ -200,7 +214,10 @@ void gds_output_renderer_init(GdsOutputRenderer *self)
priv->output_file = NULL;
priv->task = NULL;
priv->mutex_init_status = TRUE;
priv->main_context = NULL;
priv->idle_function_parameters.status_message = NULL;
g_mutex_init(&priv->settings_lock);
g_mutex_init(&priv->idle_function_parameters.message_lock);
return;
}
@@ -334,8 +351,13 @@ static void gds_output_renderer_async_finished(GObject *src_obj, GAsyncResult *r
priv = gds_output_renderer_get_instance_private(GDS_RENDER_OUTPUT_RENDERER(src_obj));
priv->main_context = NULL;
g_signal_emit(src_obj, gds_output_renderer_signals[ASYNC_FINISHED], 0);
g_clear_object(&priv->task);
/* Clear reference set in gds_output_renderer_render_output_async() */
g_object_unref(src_obj);
}
int gds_output_renderer_render_output_async(GdsOutputRenderer *renderer, struct gds_cell *cell, double scale)
@@ -353,11 +375,73 @@ int gds_output_renderer_render_output_async(GdsOutputRenderer *renderer, struct
g_mutex_lock(&priv->settings_lock);
priv->async_params.cell = cell;
priv->async_params.scale = scale;
priv->main_context = g_main_context_default();
g_mutex_unlock(&priv->settings_lock);
/* Self reference. This could end up being nasty... */
g_object_ref(renderer);
/* Do the magic */
g_task_run_in_thread(priv->task, gds_output_renderer_async_wrapper);
return ret;
}
static gboolean idle_event_processor_callback(gpointer user_data)
{
GdsOutputRenderer *renderer;
GdsOutputRendererPrivate *priv;
char *status_message;
/* If the rendering is finished before the mainloop gets to this point
* the renderer is already disposed. Catch this!
*/
if (!GDS_RENDER_IS_OUTPUT_RENDERER(user_data))
return FALSE;
renderer = GDS_RENDER_OUTPUT_RENDERER(user_data);
priv = gds_output_renderer_get_instance_private(renderer);
if (g_mutex_trylock(&priv->idle_function_parameters.message_lock)) {
status_message = priv->idle_function_parameters.status_message;
g_signal_emit(renderer, gds_output_renderer_signals[ASYNC_PROGRESS_CHANGED], 0, status_message);
g_free(priv->idle_function_parameters.status_message);
priv->idle_function_parameters.status_message = NULL;
g_mutex_unlock(&priv->idle_function_parameters.message_lock);
} else {
return TRUE;
}
return FALSE;
}
void gds_output_renderer_update_gui_status_from_async(GdsOutputRenderer *renderer, const char *status)
{
GSource *idle_event_processor;
GdsOutputRendererPrivate *priv;
g_return_if_fail(GDS_RENDER_IS_OUTPUT_RENDERER(renderer));
if (!status)
return;
priv = gds_output_renderer_get_instance_private(renderer);
/* If rendering is not async */
if (!priv->main_context)
return;
g_mutex_lock(&priv->idle_function_parameters.message_lock);
if (priv->idle_function_parameters.status_message)
g_free(priv->idle_function_parameters.status_message);
priv->idle_function_parameters.status_message = g_strdup(status);
g_mutex_unlock(&priv->idle_function_parameters.message_lock);
idle_event_processor = g_idle_source_new();
g_source_set_callback(idle_event_processor, idle_event_processor_callback, (gpointer)renderer, NULL);
g_source_attach(idle_event_processor, priv->main_context);
}
/** @} */