diff options
Diffstat (limited to 'src/services/quick-answer-service.c')
| -rw-r--r-- | src/services/quick-answer-service.c | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/src/services/quick-answer-service.c b/src/services/quick-answer-service.c new file mode 100644 index 0000000..670a72f --- /dev/null +++ b/src/services/quick-answer-service.c @@ -0,0 +1,360 @@ +#include "services/quick-answer-service.h" +#include "services/quick-answers/math.h" +#include "launcher-item.h" +#include <gdk/gdk.h> + +// +// FoobarQuickAnswer: +// +// A launcher item representing a quick, one-line answer to the query entered by the user. +// + +struct _FoobarQuickAnswer +{ + GObject parent_instance; + gchar* title; + gchar* value; + GIcon* icon; +}; + +enum +{ + ANSWER_PROP_VALUE = 1, + ANSWER_PROP_TITLE, + ANSWER_PROP_DESCRIPTION, + ANSWER_PROP_ICON, + N_ANSWER_PROPS, +}; + +static GParamSpec* answer_props[N_ANSWER_PROPS] = { 0 }; + +static void foobar_quick_answer_class_init ( FoobarQuickAnswerClass* klass ); +static void foobar_quick_answer_launcher_item_interface_init( FoobarLauncherItemInterface* iface ); +static void foobar_quick_answer_init ( FoobarQuickAnswer* self ); +static void foobar_quick_answer_get_property ( GObject* object, + guint prop_id, + GValue* value, + GParamSpec* pspec ); +static void foobar_quick_answer_finalize ( GObject* object ); +static FoobarQuickAnswer* foobar_quick_answer_new ( void ); +static gchar const* foobar_quick_answer_get_title ( FoobarLauncherItem* self ); +static gchar const* foobar_quick_answer_get_description ( FoobarLauncherItem* self ); +static GIcon* foobar_quick_answer_get_icon ( FoobarLauncherItem* self ); +static void foobar_quick_answer_activate ( FoobarLauncherItem* self ); +static void foobar_quick_answer_set_title ( FoobarQuickAnswer* self, + gchar const* value ); +static void foobar_quick_answer_set_value ( FoobarQuickAnswer* self, + gchar const* value ); +static void foobar_quick_answer_set_icon ( FoobarQuickAnswer* self, + GIcon* value ); + +G_DEFINE_FINAL_TYPE_WITH_CODE( + FoobarQuickAnswer, + foobar_quick_answer, + G_TYPE_OBJECT, + G_IMPLEMENT_INTERFACE( FOOBAR_TYPE_LAUNCHER_ITEM, foobar_quick_answer_launcher_item_interface_init ) ) + +// +// FoobarQuickAnswerService: +// +// Service providing quick answers for search queries in the launcher (if available). This includes evaluating +// mathematical expressions. +// + +struct _FoobarQuickAnswerService +{ + GObject parent_instance; +}; + +static void foobar_quick_answer_service_class_init( FoobarQuickAnswerServiceClass* klass ); +static void foobar_quick_answer_service_init ( FoobarQuickAnswerService* self ); +static FoobarQuickAnswer* foobar_quick_answer_service_query_math( gchar const* query ); + +G_DEFINE_FINAL_TYPE( FoobarQuickAnswerService, foobar_quick_answer_service, G_TYPE_OBJECT ) + +// --------------------------------------------------------------------------------------------------------------------- +// Quick Answers +// --------------------------------------------------------------------------------------------------------------------- + +// +// Static initialization for quick answers. +// +void foobar_quick_answer_class_init( FoobarQuickAnswerClass* klass ) +{ + GObjectClass* object_klass = G_OBJECT_CLASS( klass ); + object_klass->get_property = foobar_quick_answer_get_property; + object_klass->finalize = foobar_quick_answer_finalize; + + gpointer launcher_item_iface = g_type_default_interface_peek( FOOBAR_TYPE_LAUNCHER_ITEM ); + answer_props[ANSWER_PROP_VALUE] = g_param_spec_string( + "value", + "Value", + "The raw value of the quick answer.", + NULL, + G_PARAM_READABLE ); + answer_props[ANSWER_PROP_TITLE] = g_param_spec_override( + "title", + g_object_interface_find_property( launcher_item_iface, "title" ) ); + answer_props[ANSWER_PROP_DESCRIPTION] = g_param_spec_override( + "description", + g_object_interface_find_property( launcher_item_iface, "description" ) ); + answer_props[ANSWER_PROP_ICON] = g_param_spec_override( + "icon", + g_object_interface_find_property( launcher_item_iface, "icon" ) ); + g_object_class_install_properties( object_klass, N_ANSWER_PROPS, answer_props ); +} + +// +// Static initialization of the FoobarLauncherItem interface. +// +void foobar_quick_answer_launcher_item_interface_init( FoobarLauncherItemInterface* iface ) +{ + iface->get_title = foobar_quick_answer_get_title; + iface->get_description = foobar_quick_answer_get_description; + iface->get_icon = foobar_quick_answer_get_icon; + iface->activate = foobar_quick_answer_activate; +} + +// +// Instance initialization for quick answers. +// +void foobar_quick_answer_init( FoobarQuickAnswer* self ) +{ + (void)self; +} + +// +// Property getter implementation, mapping a property id to a method. +// +void foobar_quick_answer_get_property( + GObject* object, + guint prop_id, + GValue* value, + GParamSpec* pspec ) +{ + FoobarQuickAnswer* self = (FoobarQuickAnswer*)object; + + switch ( prop_id ) + { + case ANSWER_PROP_VALUE: + g_value_set_string( value, foobar_quick_answer_get_value( self ) ); + break; + case ANSWER_PROP_TITLE: + g_value_set_string( value, foobar_launcher_item_get_title( FOOBAR_LAUNCHER_ITEM ( self ) ) ); + break; + case ANSWER_PROP_DESCRIPTION: + g_value_set_string( value, foobar_launcher_item_get_description( FOOBAR_LAUNCHER_ITEM( self ) ) ); + break; + case ANSWER_PROP_ICON: + g_value_set_object( value, foobar_launcher_item_get_icon( FOOBAR_LAUNCHER_ITEM( self ) ) ); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID( object, prop_id, pspec ); + break; + } +} + +// +// Instance cleanup for quick answers. +// +void foobar_quick_answer_finalize( GObject* object ) +{ + FoobarQuickAnswer* self = (FoobarQuickAnswer*)object; + + g_clear_pointer( &self->title, g_free ); + g_clear_pointer( &self->value, g_free ); + g_clear_object( &self->icon ); + + G_OBJECT_CLASS( foobar_quick_answer_parent_class )->finalize( object ); +} + +// +// Create a new, default-initialized quick answer. +// +FoobarQuickAnswer* foobar_quick_answer_new( void ) +{ + return g_object_new( FOOBAR_TYPE_QUICK_ANSWER, NULL ); +} + +// +// Get the raw value of the quick answer. +// +gchar const* foobar_quick_answer_get_value( FoobarQuickAnswer* self ) +{ + g_return_val_if_fail( FOOBAR_IS_QUICK_ANSWER( self ), NULL ); + return self->value; +} + +// +// Get the title for the quick answer. +// +gchar const* foobar_quick_answer_get_title( FoobarLauncherItem* item ) +{ + FoobarQuickAnswer* self = ( FoobarQuickAnswer* )item; + return self->title; +} + +// +// Get the description shown below the title, always NULL for quick answers. +// +gchar const* foobar_quick_answer_get_description( FoobarLauncherItem* item ) +{ + (void)item; + return NULL; +} + +// +// Get an icon representing the quick answer. +// +GIcon* foobar_quick_answer_get_icon( FoobarLauncherItem* item ) +{ + FoobarQuickAnswer* self = ( FoobarQuickAnswer* )item; + return self->icon; +} + +// +// Copy the quick answer's value into the clipboard. +// +void foobar_quick_answer_activate( FoobarLauncherItem* item ) +{ + FoobarQuickAnswer* self = ( FoobarQuickAnswer* )item; + if ( self->value ) + { + GdkClipboard* clipboard = gdk_display_get_clipboard( gdk_display_get_default( ) ); + gdk_clipboard_set_text( clipboard, self->value ); + } +} + +// +// Update the raw value of the quick answer. +// +void foobar_quick_answer_set_value( + FoobarQuickAnswer* self, + gchar const* value ) +{ + g_return_if_fail( FOOBAR_IS_QUICK_ANSWER( self ) ); + + if ( g_strcmp0( self->value, value ) ) + { + g_clear_pointer( &self->value, g_free ); + self->value = g_strdup( value ); + g_object_notify_by_pspec( G_OBJECT( self ), answer_props[ANSWER_PROP_VALUE] ); + } +} + +// +// Update the title for the quick answer. +// +void foobar_quick_answer_set_title( + FoobarQuickAnswer* self, + gchar const* value ) +{ + g_return_if_fail( FOOBAR_IS_QUICK_ANSWER( self ) ); + + if ( g_strcmp0( self->title, value ) ) + { + g_clear_pointer( &self->title, g_free ); + self->title = g_strdup( value ); + g_object_notify_by_pspec( G_OBJECT( self ), answer_props[ANSWER_PROP_TITLE] ); + } +} + +// +// Update the icon representing the quick answer. +// +void foobar_quick_answer_set_icon( + FoobarQuickAnswer* self, + GIcon* value ) +{ + g_return_if_fail( FOOBAR_IS_QUICK_ANSWER( self ) ); + + if ( self->icon != value ) + { + g_clear_object( &self->icon ); + self->icon = value ? g_object_ref( value ) : NULL; + g_object_notify_by_pspec( G_OBJECT( self ), answer_props[ANSWER_PROP_ICON] ); + } +} + +// --------------------------------------------------------------------------------------------------------------------- +// Service Implementation +// --------------------------------------------------------------------------------------------------------------------- + +// +// Static initialization for the quick answer service. +// +void foobar_quick_answer_service_class_init( FoobarQuickAnswerServiceClass* klass ) +{ + (void)klass; +} + +// +// Instance initialization for the quick answer service. +// +void foobar_quick_answer_service_init( FoobarQuickAnswerService* self ) +{ + (void)self; +} + +// --------------------------------------------------------------------------------------------------------------------- +// Public API +// --------------------------------------------------------------------------------------------------------------------- + +// +// Create a new quick answer service instance. +// +FoobarQuickAnswerService* foobar_quick_answer_service_new( void ) +{ + return g_object_new( FOOBAR_TYPE_QUICK_ANSWER_SERVICE, NULL ); +} + +// +// Query the service for a quick answer. +// +FoobarQuickAnswer* foobar_quick_answer_service_query( + FoobarQuickAnswerService* self, + gchar const* query ) +{ + (void)self; + + FoobarQuickAnswer* result = foobar_quick_answer_service_query_math( query ); + if ( result ) { return result; } + + return NULL; +} + +// +// Try to parse the query as a mathematical expression and evaluate it. +// +FoobarQuickAnswer* foobar_quick_answer_service_query_math( gchar const* query ) +{ + FoobarQuickAnswer* result = NULL; + + gsize token_count; + g_autofree FoobarMathToken* tokens = foobar_math_lex( query, strlen( query ), &token_count ); + if ( tokens ) + { + FoobarMathExpression* expr = foobar_math_parse( tokens, token_count ); + if ( expr ) + { + // foobar_math_expression_print( expr, 0 ); + + FoobarMathValue val = { 0 }; + if ( foobar_math_evaluate( expr, &val ) ) + { + g_autofree gchar* value = foobar_math_value_to_string( val ); + g_autofree gchar* title = g_strdup_printf( "= %s", value ); + g_autoptr( GIcon ) icon = g_themed_icon_new( "fluent-calculator-symbolic" ); + result = foobar_quick_answer_new( ); + foobar_quick_answer_set_value( result, value ); + foobar_quick_answer_set_title( result, title ); + foobar_quick_answer_set_icon( result, icon ); + foobar_math_value_free( val ); + } + + foobar_math_expression_free( expr ); + } + } + + return result; +} |