1310 lines
35 KiB
C
1310 lines
35 KiB
C
#include "evas_common.h"
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#include "evas_private.h"
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#include "evas_cs.h"
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#ifdef LKDEBUG
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EAPI Eina_Bool lockdebug = EINA_FALSE;
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EAPI int lockmax = 0;
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#endif
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static int _evas_init_count = 0;
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int _evas_log_dom_global = -1;
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/**
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* Initialize Evas
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*
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* @return The init counter value.
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*
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* This function initialize evas, increments a counter of the number
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* of calls to this function and returns this value.
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*
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* @see evas_shutdown().
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*
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* @ingroup Evas_Group
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*/
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EAPI int
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evas_init(void)
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{
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if (++_evas_init_count != 1)
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return _evas_init_count;
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#ifdef LKDEBUG
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if (getenv("EVAS_LOCK_DEBUG"))
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{
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lockdebug = EINA_TRUE;
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lockmax = atoi(getenv("EVAS_LOCK_DEBUG"));
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}
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#endif
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#ifdef HAVE_EVIL
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if (!evil_init())
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return --_evas_init_count;
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#endif
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if (!eina_init())
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goto shutdown_evil;
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_evas_log_dom_global = eina_log_domain_register
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("evas_main", EVAS_DEFAULT_LOG_COLOR);
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if (_evas_log_dom_global < 0)
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{
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EINA_LOG_ERR("Can not create a module log domain.");
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goto shutdown_eina;
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}
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evas_module_init();
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#ifdef BUILD_ASYNC_EVENTS
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if (!evas_async_events_init())
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goto shutdown_module;
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#endif
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#ifdef EVAS_CSERVE
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if (getenv("EVAS_CSERVE")) evas_cserve_init();
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#endif
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#ifdef BUILD_ASYNC_PRELOAD
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_evas_preload_thread_init();
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#endif
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#ifdef EVAS_FRAME_QUEUING
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evas_common_frameq_init();
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#endif
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return _evas_init_count;
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#ifdef BUILD_ASYNC_EVENTS
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shutdown_module:
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evas_module_shutdown();
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eina_log_domain_unregister(_evas_log_dom_global);
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#endif
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shutdown_eina:
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eina_shutdown();
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shutdown_evil:
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#ifdef HAVE_EVIL
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evil_shutdown();
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#endif
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return --_evas_init_count;
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}
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/**
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* Shutdown Evas
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*
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* @return The init counter value.
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*
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* This function finalize evas, decrements the counter of the number
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* of calls to the function evas_init() and returns this value.
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*
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* @see evas_init().
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*
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* @ingroup Evas_Group
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*/
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EAPI int
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evas_shutdown(void)
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{
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if (--_evas_init_count != 0)
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return _evas_init_count;
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#ifdef EVAS_FRAME_QUEUING
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if (evas_common_frameq_enabled())
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{
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evas_common_frameq_finish();
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evas_common_frameq_destroy();
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}
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#endif
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#ifdef BUILD_ASYNC_EVENTS
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_evas_preload_thread_shutdown();
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#endif
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#ifdef EVAS_CSERVE
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if (getenv("EVAS_CSERVE")) evas_cserve_shutdown();
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#endif
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#ifdef BUILD_ASYNC_EVENTS
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evas_async_events_shutdown();
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#endif
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evas_font_dir_cache_free();
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evas_common_shutdown();
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evas_module_shutdown();
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eina_log_domain_unregister(_evas_log_dom_global);
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eina_shutdown();
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#ifdef HAVE_EVIL
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evil_shutdown();
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#endif
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return _evas_init_count;
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}
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/**
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* Creates a new empty evas.
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*
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* Note that before you can use the evas, you will to at a minimum:
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* @li Set its render method with @ref evas_output_method_set .
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* @li Set its viewport size with @ref evas_output_viewport_set .
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* @li Set its size of the canvas with @ref evas_output_size_set .
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* @li Ensure that the render engine is given the correct settings
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* with @ref evas_engine_info_set .
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*
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* This function should only fail if the memory allocation fails
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*
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* @note this function is very low level. Instead of using it
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* directly, consider using the high level functions in
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* Ecore_Evas such as @c ecore_evas_new(). See
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* http://docs.enlightenment.org/auto/ecore/.
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*
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* @attention it is recommended that one calls evas_init() before
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* creating new canvas.
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*
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* @return A new uninitialised Evas canvas on success. Otherwise, @c
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* NULL.
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* @ingroup Evas_Canvas
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*/
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EAPI Evas *
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evas_new(void)
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{
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Evas *e;
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e = calloc(1, sizeof(Evas));
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if (!e) return NULL;
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e->magic = MAGIC_EVAS;
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e->output.render_method = RENDER_METHOD_INVALID;
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e->viewport.w = 1;
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e->viewport.h = 1;
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e->hinting = EVAS_FONT_HINTING_BYTECODE;
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e->name_hash = eina_hash_string_superfast_new(NULL);
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#define EVAS_ARRAY_SET(E, Array) \
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eina_array_step_set(&E->Array, sizeof (E->Array), 256);
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EVAS_ARRAY_SET(e, delete_objects);
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EVAS_ARRAY_SET(e, active_objects);
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EVAS_ARRAY_SET(e, restack_objects);
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EVAS_ARRAY_SET(e, render_objects);
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EVAS_ARRAY_SET(e, pending_objects);
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EVAS_ARRAY_SET(e, obscuring_objects);
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EVAS_ARRAY_SET(e, temporary_objects);
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EVAS_ARRAY_SET(e, calculate_objects);
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EVAS_ARRAY_SET(e, clip_changes);
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#undef EVAS_ARRAY_SET
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return e;
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}
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/**
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* Frees the given evas and any objects created on it.
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*
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* Any objects with 'free' callbacks will have those callbacks called
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* in this function.
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*
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* @param e The given evas.
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*
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* @ingroup Evas_Canvas
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*/
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EAPI void
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evas_free(Evas *e)
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{
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Eina_Rectangle *r;
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Evas_Layer *lay;
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int i;
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int del;
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MAGIC_CHECK(e, Evas, MAGIC_EVAS);
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return;
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MAGIC_CHECK_END();
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#ifdef EVAS_FRAME_QUEUING
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evas_common_frameq_flush();
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#endif
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if (e->walking_list == 0) evas_render_idle_flush(e);
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if (e->walking_list > 0) return;
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if (e->callbacks)
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{
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if (e->callbacks->deletions_waiting) return;
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e->callbacks->deletions_waiting = 0;
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evas_event_callback_list_post_free(&e->callbacks->callbacks);
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if (!e->callbacks->callbacks)
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{
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free(e->callbacks);
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e->callbacks = NULL;
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}
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_evas_post_event_callback_free(e);
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}
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del = 1;
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e->walking_list++;
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e->cleanup = 1;
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while (del)
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{
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del = 0;
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EINA_INLIST_FOREACH(e->layers, lay)
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{
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Evas_Object *o;
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evas_layer_pre_free(lay);
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EINA_INLIST_FOREACH(lay->objects, o)
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{
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if ((o->callbacks) && (o->callbacks->walking_list))
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{
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/* Defer free */
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e->delete_me = 1;
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e->walking_list--;
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return;
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}
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if (!o->delete_me)
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del = 1;
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}
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}
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}
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EINA_INLIST_FOREACH(e->layers, lay)
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evas_layer_free_objects(lay);
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evas_layer_clean(e);
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e->walking_list--;
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evas_font_path_clear(e);
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e->pointer.object.in = eina_list_free(e->pointer.object.in);
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if (e->name_hash) eina_hash_free(e->name_hash);
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e->name_hash = NULL;
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EINA_LIST_FREE(e->damages, r)
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eina_rectangle_free(r);
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EINA_LIST_FREE(e->obscures, r)
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eina_rectangle_free(r);
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evas_fonts_zero_free(e);
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evas_event_callback_all_del(e);
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evas_event_callback_cleanup(e);
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if (e->engine.func)
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{
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e->engine.func->context_free(e->engine.data.output, e->engine.data.context);
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e->engine.func->output_free(e->engine.data.output);
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e->engine.func->info_free(e, e->engine.info);
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}
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for (i = 0; i < e->modifiers.mod.count; i++)
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free(e->modifiers.mod.list[i]);
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if (e->modifiers.mod.list) free(e->modifiers.mod.list);
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for (i = 0; i < e->locks.lock.count; i++)
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free(e->locks.lock.list[i]);
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if (e->locks.lock.list) free(e->locks.lock.list);
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if (e->engine.module) evas_module_unref(e->engine.module);
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eina_array_flush(&e->delete_objects);
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eina_array_flush(&e->active_objects);
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eina_array_flush(&e->restack_objects);
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eina_array_flush(&e->render_objects);
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eina_array_flush(&e->pending_objects);
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eina_array_flush(&e->obscuring_objects);
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eina_array_flush(&e->temporary_objects);
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eina_array_flush(&e->calculate_objects);
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eina_array_flush(&e->clip_changes);
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e->magic = 0;
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free(e);
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}
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/**
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* Sets the output engine for the given evas.
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*
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* Once the output engine for an evas is set, any attempt to change it
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* will be ignored. The value for @p render_method can be found using
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* @ref evas_render_method_lookup .
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*
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* @attention it is mandatory that one calls evas_init() before
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* setting the output method.
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*
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* @param e The given evas.
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* @param render_method The numeric engine value to use.
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* @ingroup Evas_Output_Method
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*/
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EAPI void
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evas_output_method_set(Evas *e, int render_method)
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{
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Evas_Module *em;
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MAGIC_CHECK(e, Evas, MAGIC_EVAS);
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return;
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MAGIC_CHECK_END();
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/* if our engine to set it to is invalid - abort */
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if (render_method == RENDER_METHOD_INVALID) return;
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/* if the engine is already set up - abort */
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if (e->output.render_method != RENDER_METHOD_INVALID) return;
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/* Request the right engine. */
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em = evas_module_engine_get(render_method);
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if (!em) return ;
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if (em->id_engine != render_method) return;
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if (!evas_module_load(em)) return;
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/* set the correct render */
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e->output.render_method = render_method;
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e->engine.func = (em->functions);
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evas_module_use(em);
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if (e->engine.module) evas_module_unref(e->engine.module);
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e->engine.module = em;
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evas_module_ref(em);
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/* get the engine info struct */
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if (e->engine.func->info) e->engine.info = e->engine.func->info(e);
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return;
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}
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/**
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* Retrieves the number of the output engine used for the given evas.
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* @param e The given evas.
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* @return The ID number of the output engine being used. @c 0 is
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* returned if there is an error.
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* @ingroup Evas_Output_Method
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*/
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EAPI int
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evas_output_method_get(const Evas *e)
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{
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MAGIC_CHECK(e, Evas, MAGIC_EVAS);
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return RENDER_METHOD_INVALID;
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MAGIC_CHECK_END();
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return e->output.render_method;
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}
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/**
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* Retrieves the current render engine info struct from the given evas.
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*
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* The returned structure is publicly modifiable. The contents are
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* valid until either @ref evas_engine_info_set or @ref evas_render
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* are called.
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*
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* This structure does not need to be freed by the caller.
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*
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* @param e The given evas.
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* @return A pointer to the Engine Info structure. @c NULL is returned if
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* an engine has not yet been assigned.
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* @ingroup Evas_Output_Method
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*/
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EAPI Evas_Engine_Info *
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evas_engine_info_get(const Evas *e)
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{
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Evas_Engine_Info *info;
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MAGIC_CHECK(e, Evas, MAGIC_EVAS);
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return NULL;
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MAGIC_CHECK_END();
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if (!e->engine.info) return NULL;
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info = e->engine.info;
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((Evas *)e)->engine.info_magic = info->magic;
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return info;
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}
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/**
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* Applies the engine settings for the given evas from the given @c
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* Evas_Engine_Info structure.
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*
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* To get the Evas_Engine_Info structure to use, call @ref
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* evas_engine_info_get . Do not try to obtain a pointer to an
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* @c Evas_Engine_Info structure in any other way.
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*
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* You will need to call this function at least once before you can
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* create objects on an evas or render that evas. Some engines allow
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* their settings to be changed more than once.
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*
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* Once called, the @p info pointer should be considered invalid.
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*
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* @param e The pointer to the Evas Canvas
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* @param info The pointer to the Engine Info to use
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* @return 1 if no error occurred, 0 otherwise
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* @ingroup Evas_Output_Method
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*/
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EAPI Eina_Bool
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evas_engine_info_set(Evas *e, Evas_Engine_Info *info)
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{
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MAGIC_CHECK(e, Evas, MAGIC_EVAS);
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return EINA_FALSE;
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MAGIC_CHECK_END();
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if (!info) return EINA_FALSE;
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if (info != e->engine.info) return EINA_FALSE;
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if (info->magic != e->engine.info_magic) return EINA_FALSE;
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return (Eina_Bool)e->engine.func->setup(e, info);
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}
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/**
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* Sets the output size of the render engine of the given evas.
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*
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* The evas will render to a rectangle of the given size once this
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* function is called. The output size is independent of the viewport
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* size. The viewport will be stretched to fill the given rectangle.
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*
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* The units used for @p w and @p h depend on the engine used by the
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* evas.
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*
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* @param e The given evas.
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* @param w The width in output units, usually pixels.
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* @param h The height in output units, usually pixels.
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* @ingroup Evas_Output_Size
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*/
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EAPI void
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evas_output_size_set(Evas *e, int w, int h)
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{
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MAGIC_CHECK(e, Evas, MAGIC_EVAS);
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return;
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MAGIC_CHECK_END();
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if ((w == e->output.w) && (h == e->output.h)) return;
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if (w < 1) w = 1;
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if (h < 1) h = 1;
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#ifdef EVAS_FRAME_QUEUING
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evas_common_frameq_flush();
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#endif
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e->output.w = w;
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e->output.h = h;
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e->output.changed = 1;
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e->output_validity++;
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e->changed = 1;
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evas_render_invalidate(e);
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}
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|
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/**
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* Retrieve the output size of the render engine of the given evas.
|
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*
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* The output size is given in whatever the output units are for the
|
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* engine.
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*
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* If either @p w or @p h is @c NULL, then it is ignored. If @p e is
|
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* invalid, the returned results are undefined.
|
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*
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* @param e The given evas.
|
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* @param w The pointer to an integer to store the width in.
|
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* @param h The pointer to an integer to store the height in.
|
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* @ingroup Evas_Output_Size
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*/
|
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EAPI void
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evas_output_size_get(const Evas *e, int *w, int *h)
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{
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MAGIC_CHECK(e, Evas, MAGIC_EVAS);
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if (w) *w = 0;
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if (h) *h = 0;
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return;
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MAGIC_CHECK_END();
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if (w) *w = e->output.w;
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if (h) *h = e->output.h;
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}
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|
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/**
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* Sets the output viewport of the given evas in evas units.
|
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*
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* The output viewport is the area of the evas that will be visible to
|
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* the viewer. The viewport will be stretched to fit the output
|
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* target of the evas when rendering is performed.
|
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*
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* @note The coordinate values do not have to map 1-to-1 with the output
|
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* target. However, it is generally advised that it is done for ease
|
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* of use.
|
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*
|
|
* @param e The given evas.
|
|
* @param x The top-left corner x value of the viewport.
|
|
* @param y The top-left corner y value of the viewport.
|
|
* @param w The width of the viewport. Must be greater than 0.
|
|
* @param h The height of the viewport. Must be greater than 0.
|
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* @ingroup Evas_Output_Size
|
|
*/
|
|
EAPI void
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|
evas_output_viewport_set(Evas *e, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
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return;
|
|
MAGIC_CHECK_END();
|
|
|
|
if ((x == e->viewport.x) && (y == e->viewport.y) &&
|
|
(w == e->viewport.w) && (h == e->viewport.h)) return;
|
|
if (w <= 0) return;
|
|
if (h <= 0) return;
|
|
if ((x != 0) || (y != 0))
|
|
{
|
|
ERR("Compat error. viewport x,y != 0,0 not supported");
|
|
x = 0;
|
|
y = 0;
|
|
}
|
|
e->viewport.x = x;
|
|
e->viewport.y = y;
|
|
e->viewport.w = w;
|
|
e->viewport.h = h;
|
|
e->viewport.changed = 1;
|
|
e->output_validity++;
|
|
e->changed = 1;
|
|
}
|
|
|
|
/**
|
|
* Get the render engine's output viewport co-ordinates in canvas units.
|
|
* @param e The pointer to the Evas Canvas
|
|
* @param x The pointer to a x variable to be filled in
|
|
* @param y The pointer to a y variable to be filled in
|
|
* @param w The pointer to a width variable to be filled in
|
|
* @param h The pointer to a height variable to be filled in
|
|
* @ingroup Evas_Output_Size
|
|
*
|
|
* Calling this function writes the current canvas output viewport
|
|
* size and location values into the variables pointed to by @p x, @p
|
|
* y, @p w and @p h. On success the variables have the output
|
|
* location and size values written to them in canvas units. Any of @p
|
|
* x, @p y, @p w or @p h that are NULL will not be written to. If @p e
|
|
* is invalid, the results are undefined.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* extern Evas *evas;
|
|
* Evas_Coord x, y, width, height;
|
|
*
|
|
* evas_output_viewport_get(evas, &x, &y, &w, &h);
|
|
* @endcode
|
|
*/
|
|
EAPI void
|
|
evas_output_viewport_get(const Evas *e, Evas_Coord *x, Evas_Coord *y, Evas_Coord *w, Evas_Coord *h)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
if (x) *x = 0;
|
|
if (y) *y = 0;
|
|
if (w) *w = 0;
|
|
if (h) *h = 0;
|
|
return;
|
|
MAGIC_CHECK_END();
|
|
|
|
if (x) *x = e->viewport.x;
|
|
if (y) *y = e->viewport.y;
|
|
if (w) *w = e->viewport.w;
|
|
if (h) *h = e->viewport.h;
|
|
}
|
|
|
|
/**
|
|
* Convert/scale an ouput screen co-ordinate into canvas co-ordinates
|
|
*
|
|
* @param e The pointer to the Evas Canvas
|
|
* @param x The screen/output x co-ordinate
|
|
* @return The screen co-ordinate translated to canvas unit co-ordinates
|
|
* @ingroup Evas_Coord_Mapping_Group
|
|
*
|
|
* This function takes in a horizontal co-ordinate as the @p x
|
|
* parameter and converts it into canvas units, accounting for output
|
|
* size, viewport size and location, returning it as the function
|
|
* return value. If @p e is invalid, the results are undefined.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* extern Evas *evas;
|
|
* extern int screen_x;
|
|
* Evas_Coord canvas_x;
|
|
*
|
|
* canvas_x = evas_coord_screen_x_to_world(evas, screen_x);
|
|
* @endcode
|
|
*/
|
|
EAPI Evas_Coord
|
|
evas_coord_screen_x_to_world(const Evas *e, int x)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return 0;
|
|
MAGIC_CHECK_END();
|
|
if (e->output.w == e->viewport.w) return e->viewport.x + x;
|
|
return (long long)e->viewport.x + (((long long)x * (long long)e->viewport.w) / (long long)e->output.w);
|
|
}
|
|
|
|
/**
|
|
* Convert/scale an ouput screen co-ordinate into canvas co-ordinates
|
|
*
|
|
* @param e The pointer to the Evas Canvas
|
|
* @param y The screen/output y co-ordinate
|
|
* @return The screen co-ordinate translated to canvas unit co-ordinates
|
|
* @ingroup Evas_Coord_Mapping_Group
|
|
*
|
|
* This function takes in a vertical co-ordinate as the @p y parameter
|
|
* and converts it into canvas units, accounting for output size,
|
|
* viewport size and location, returning it as the function return
|
|
* value. If @p e is invalid, the results are undefined.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* extern Evas *evas;
|
|
* extern int screen_y;
|
|
* Evas_Coord canvas_y;
|
|
*
|
|
* canvas_y = evas_coord_screen_y_to_world(evas, screen_y);
|
|
* @endcode
|
|
*/
|
|
EAPI Evas_Coord
|
|
evas_coord_screen_y_to_world(const Evas *e, int y)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return 0;
|
|
MAGIC_CHECK_END();
|
|
if (e->output.h == e->viewport.h) return e->viewport.y + y;
|
|
return (long long)e->viewport.y + (((long long)y * (long long)e->viewport.h) / (long long)e->output.h);
|
|
}
|
|
|
|
/**
|
|
* Convert/scale a canvas co-ordinate into output screen co-ordinates
|
|
*
|
|
* @param e The pointer to the Evas Canvas
|
|
* @param x The canvas x co-ordinate
|
|
* @return The output/screen co-ordinate translated to output co-ordinates
|
|
* @ingroup Evas_Coord_Mapping_Group
|
|
*
|
|
* This function takes in a horizontal co-ordinate as the @p x
|
|
* parameter and converts it into output units, accounting for output
|
|
* size, viewport size and location, returning it as the function
|
|
* return value. If @p e is invalid, the results are undefined.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* extern Evas *evas;
|
|
* int screen_x;
|
|
* extern Evas_Coord canvas_x;
|
|
*
|
|
* screen_x = evas_coord_world_x_to_screen(evas, canvas_x);
|
|
* @endcode
|
|
*/
|
|
EAPI int
|
|
evas_coord_world_x_to_screen(const Evas *e, Evas_Coord x)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return 0;
|
|
MAGIC_CHECK_END();
|
|
if (e->output.w == e->viewport.w) return x - e->viewport.x;
|
|
return (int)((((long long)x - (long long)e->viewport.x) * (long long)e->output.w) / (long long)e->viewport.w);
|
|
}
|
|
|
|
/**
|
|
* Convert/scale a canvas co-ordinate into output screen co-ordinates
|
|
*
|
|
* @param e The pointer to the Evas Canvas
|
|
* @param y The canvas y co-ordinate
|
|
* @return The output/screen co-ordinate translated to output co-ordinates
|
|
* @ingroup Evas_Coord_Mapping_Group
|
|
*
|
|
* This function takes in a vertical co-ordinate as the @p x parameter
|
|
* and converts it into output units, accounting for output size,
|
|
* viewport size and location, returning it as the function return
|
|
* value. If @p e is invalid, the results are undefined.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* extern Evas *evas;
|
|
* int screen_y;
|
|
* extern Evas_Coord canvas_y;
|
|
*
|
|
* screen_y = evas_coord_world_y_to_screen(evas, canvas_y);
|
|
* @endcode
|
|
*/
|
|
EAPI int
|
|
evas_coord_world_y_to_screen(const Evas *e, Evas_Coord y)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return 0;
|
|
MAGIC_CHECK_END();
|
|
if (e->output.h == e->viewport.h) return y - e->viewport.y;
|
|
return (int)((((long long)y - (long long)e->viewport.y) * (long long)e->output.h) / (long long)e->viewport.h);
|
|
}
|
|
|
|
/**
|
|
* Look up a numeric ID from a string name of a rendering engine.
|
|
*
|
|
* @param name The string name of an engine
|
|
* @return A numeric (opaque) ID for the rendering engine
|
|
* @ingroup Evas_Output_Method
|
|
*
|
|
* This function looks up a numeric return value for the named engine
|
|
* in the string @p name. This is a normal C string, NUL byte
|
|
* terminated. The name is case sensitive. If the rendering engine is
|
|
* available, a numeric ID for that engine is returned that is not
|
|
* 0. If the engine is not available, 0 is returned, indicating an
|
|
* invalid engine.
|
|
*
|
|
* The programmer should NEVER rely on the numeric ID of an engine
|
|
* unless it is returned by this function. Programs should NOT be
|
|
* written accessing render method ID's directly, without first
|
|
* obtaining it from this function.
|
|
*
|
|
* @attention it is mandatory that one calls evas_init() before
|
|
* looking up the render method.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* int engine_id;
|
|
* Evas *evas;
|
|
*
|
|
* evas_init();
|
|
*
|
|
* evas = evas_new();
|
|
* if (!evas)
|
|
* {
|
|
* fprintf(stderr, "ERROR: Canvas creation failed. Fatal error.\n");
|
|
* exit(-1);
|
|
* }
|
|
* engine_id = evas_render_method_lookup("software_x11");
|
|
* if (!engine_id)
|
|
* {
|
|
* fprintf(stderr, "ERROR: Requested rendering engine is absent.\n");
|
|
* exit(-1);
|
|
* }
|
|
* evas_output_method_set(evas, engine_id);
|
|
* @endcode
|
|
*/
|
|
EAPI int
|
|
evas_render_method_lookup(const char *name)
|
|
{
|
|
Evas_Module *em;
|
|
|
|
if (!name) return RENDER_METHOD_INVALID;
|
|
/* search on the engines list for the name */
|
|
em = evas_module_find_type(EVAS_MODULE_TYPE_ENGINE, name);
|
|
if (!em) return RENDER_METHOD_INVALID;
|
|
|
|
return em->id_engine;
|
|
}
|
|
|
|
/**
|
|
* List all the rendering engines compiled into the copy of the Evas library
|
|
*
|
|
* @return A linked list whose data members are C strings of engine names
|
|
* @ingroup Evas_Output_Method
|
|
*
|
|
* Calling this will return a handle (pointer) to an Evas linked
|
|
* list. Each node in the linked list will have the data pointer be a
|
|
* (char *) pointer to the string name of the rendering engine
|
|
* available. The strings should never be modified, neither should the
|
|
* list be modified. This list should be cleaned up as soon as the
|
|
* program no longer needs it using evas_render_method_list_free(). If
|
|
* no engines are available from Evas, NULL will be returned.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* Eina_List *engine_list, *l;
|
|
* char *engine_name;
|
|
*
|
|
* engine_list = evas_render_method_list();
|
|
* if (!engine_list)
|
|
* {
|
|
* fprintf(stderr, "ERROR: Evas supports no engines! Exit.\n");
|
|
* exit(-1);
|
|
* }
|
|
* printf("Availible Evas Engines:\n");
|
|
* EINA_LIST_FOREACH(engine_list, l, engine_name)
|
|
* printf("%s\n", engine_name);
|
|
* evas_render_method_list_free(engine_list);
|
|
* @endcode
|
|
*/
|
|
EAPI Eina_List *
|
|
evas_render_method_list(void)
|
|
{
|
|
Eina_List *methods = NULL;
|
|
|
|
/* FIXME: get from modules - this is currently coded-in */
|
|
#ifdef BUILD_ENGINE_SOFTWARE_GDI
|
|
methods = eina_list_append(methods, "software_gdi");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_DDRAW
|
|
methods = eina_list_append(methods, "software_ddraw");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_16_DDRAW
|
|
methods = eina_list_append(methods, "software_16_ddraw");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_DIRECT3D
|
|
methods = eina_list_append(methods, "direct3d");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_16_WINCE
|
|
methods = eina_list_append(methods, "software_16_wince");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_X11
|
|
methods = eina_list_append(methods, "software_x11");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_16_X11
|
|
methods = eina_list_append(methods, "software_16_x11");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_GL_X11
|
|
methods = eina_list_append(methods, "gl_x11");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_DIRECTFB
|
|
methods = eina_list_append(methods, "directfb");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_FB
|
|
methods = eina_list_append(methods, "fb");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_BUFFER
|
|
methods = eina_list_append(methods, "buffer");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_WIN32_GDI
|
|
methods = eina_list_append(methods, "software_win32_gdi");
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_SDL
|
|
methods = eina_list_append(methods, "software_sdl");
|
|
#endif
|
|
|
|
return methods;
|
|
}
|
|
|
|
/**
|
|
* This function should be called to free a list of engine names
|
|
*
|
|
* @param list The Eina_List base pointer for the engine list to be freed
|
|
* @ingroup Evas_Output_Method
|
|
*
|
|
* When this function is called it will free the engine list passed in
|
|
* as @p list. The list should only be a list of engines generated by
|
|
* calling evas_render_method_list(). If @p list is NULL, nothing will
|
|
* happen.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* Eina_List *engine_list, *l;
|
|
* char *engine_name;
|
|
*
|
|
* engine_list = evas_render_method_list();
|
|
* if (!engine_list)
|
|
* {
|
|
* fprintf(stderr, "ERROR: Evas supports no engines! Exit.\n");
|
|
* exit(-1);
|
|
* }
|
|
* printf("Availible Evas Engines:\n");
|
|
* EINA_LIST_FOREACH(engine_list, l, engine_name)
|
|
* printf("%s\n", engine_name);
|
|
* evas_render_method_list_free(engine_list);
|
|
* @endcode
|
|
*/
|
|
EAPI void
|
|
evas_render_method_list_free(Eina_List *list)
|
|
{
|
|
eina_list_free(list);
|
|
}
|
|
|
|
/**
|
|
* This function returns the current known pointer co-ordinates
|
|
*
|
|
* @param e The pointer to the Evas Canvas
|
|
* @param x The pointer to an integer to be filled in
|
|
* @param y The pointer to an integer to be filled in
|
|
* @ingroup Evas_Pointer_Group
|
|
*
|
|
* This function returns the current known screen/output co-ordinates
|
|
* of the mouse pointer and sets the contents of the integers pointed
|
|
* to by @p x and @p y to contain these co-ordinates. If @p e is not a
|
|
* valid canvas the results of this function are undefined.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* extern Evas *evas;
|
|
* int mouse_x, mouse_y;
|
|
*
|
|
* evas_pointer_output_xy_get(evas, &mouse_x, &mouse_y);
|
|
* printf("Mouse is at screen position %i, %i\n", mouse_x, mouse_y);
|
|
* @endcode
|
|
*/
|
|
EAPI void
|
|
evas_pointer_output_xy_get(const Evas *e, int *x, int *y)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
if (x) *x = 0;
|
|
if (y) *y = 0;
|
|
return;
|
|
MAGIC_CHECK_END();
|
|
if (x) *x = e->pointer.x;
|
|
if (y) *y = e->pointer.y;
|
|
}
|
|
|
|
/**
|
|
* This function returns the current known pointer co-ordinates
|
|
*
|
|
* @param e The pointer to the Evas Canvas
|
|
* @param x The pointer to a Evas_Coord to be filled in
|
|
* @param y The pointer to a Evas_Coord to be filled in
|
|
* @ingroup Evas_Pointer_Group
|
|
*
|
|
* This function returns the current known canvas unit co-ordinates of
|
|
* the mouse pointer and sets the contents of the Evas_Coords pointed
|
|
* to by @p x and @p y to contain these co-ordinates. If @p e is not a
|
|
* valid canvas the results of this function are undefined.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* extern Evas *evas;
|
|
* Evas_Coord mouse_x, mouse_y;
|
|
*
|
|
* evas_pointer_output_xy_get(evas, &mouse_x, &mouse_y);
|
|
* printf("Mouse is at canvas position %f, %f\n", mouse_x, mouse_y);
|
|
* @endcode
|
|
*/
|
|
EAPI void
|
|
evas_pointer_canvas_xy_get(const Evas *e, Evas_Coord *x, Evas_Coord *y)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
if (x) *x = 0;
|
|
if (y) *y = 0;
|
|
return;
|
|
MAGIC_CHECK_END();
|
|
if (x) *x = e->pointer.x;
|
|
if (y) *y = e->pointer.y;
|
|
}
|
|
|
|
/**
|
|
* Returns a bitmask with the mouse buttons currently pressed, set to 1
|
|
*
|
|
* @param e The pointer to the Evas Canvas
|
|
* @return A bitmask of the currently depressed buttons on the cavas
|
|
* @ingroup Evas_Pointer_Group
|
|
*
|
|
* Calling this function will return a 32-bit integer with the
|
|
* appropriate bits set to 1 that correspond to a mouse button being
|
|
* depressed. This limits Evas to a mouse devices with a maximum of 32
|
|
* buttons, but that is generally in excess of any host system's
|
|
* pointing device abilities.
|
|
*
|
|
* A canvas by default begins with no mouse buttons being pressed and
|
|
* only calls to evas_event_feed_mouse_down(),
|
|
* evas_event_feed_mouse_down_data(), evas_event_feed_mouse_up() and
|
|
* evas_event_feed_mouse_up_data() will alter that.
|
|
*
|
|
* The least significant bit corresponds to the first mouse button
|
|
* (button 1) and the most significant bit corresponds to the last
|
|
* mouse button (button 32).
|
|
*
|
|
* If @p e is not a valid canvas, the return value is undefined.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* extern Evas *evas;
|
|
* int button_mask, i;
|
|
*
|
|
* button_mask = evas_pointer_button_down_mask_get(evas);
|
|
* printf("Buttons currently pressed:\n");
|
|
* for (i = 0; i < 32; i++)
|
|
* {
|
|
* if ((button_mask & (1 << i)) != 0) printf("Button %i\n", i + 1);
|
|
* }
|
|
* @endcode
|
|
*/
|
|
EAPI int
|
|
evas_pointer_button_down_mask_get(const Evas *e)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return 0;
|
|
MAGIC_CHECK_END();
|
|
return (int)e->pointer.button;
|
|
}
|
|
|
|
/**
|
|
* Returns whether the mouse pointer is logically inside the canvas
|
|
*
|
|
* @param e The pointer to the Evas Canvas
|
|
* @return An integer that is 1 if the mouse is inside the canvas, 0 otherwise
|
|
* @ingroup Evas_Pointer_Group
|
|
*
|
|
* When this function is called it will return a value of either 0 or
|
|
* 1, depending on if evas_event_feed_mouse_in(),
|
|
* evas_event_feed_mouse_in_data(), or evas_event_feed_mouse_out(),
|
|
* evas_event_feed_mouse_out_data() have been called to feed in a
|
|
* mouse enter event into the canvas.
|
|
*
|
|
* A return value of 1 indicates the mouse is logically inside the
|
|
* canvas, and 0 implies it is logically outside the canvas.
|
|
*
|
|
* A canvas begins with the mouse being assumed outside (0).
|
|
*
|
|
* If @p e is not a valid canvas, the return value is undefined.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* extern Evas *evas;
|
|
*
|
|
* if (evas_pointer_inside_get(evas)) printf("Mouse is in!\n");
|
|
* else printf("Mouse is out!\n");
|
|
* @endcode
|
|
*/
|
|
EAPI Eina_Bool
|
|
evas_pointer_inside_get(const Evas *e)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return 0;
|
|
MAGIC_CHECK_END();
|
|
return (int)e->pointer.inside;
|
|
}
|
|
|
|
/**
|
|
* Attaches a specific pointer to the evas for fetching later
|
|
*
|
|
* @param e The canvas to attach the pointer to
|
|
* @param data The pointer to attach
|
|
* @ingroup Evas_Canvas
|
|
*/
|
|
EAPI void
|
|
evas_data_attach_set(Evas *e, void *data)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return;
|
|
MAGIC_CHECK_END();
|
|
e->attach_data = data;
|
|
}
|
|
|
|
/**
|
|
* Returns the pointer attached by evas_data_attach_set()
|
|
*
|
|
* @param e The canvas to attach the pointer to
|
|
* @return The pointer attached
|
|
* @ingroup Evas_Canvas
|
|
*/
|
|
EAPI void *
|
|
evas_data_attach_get(const Evas *e)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return NULL;
|
|
MAGIC_CHECK_END();
|
|
return e->attach_data;
|
|
}
|
|
|
|
/**
|
|
* Inform to the evas that it got the focus.
|
|
*
|
|
* @param e The evas to change information.
|
|
* @ingroup Evas_Canvas
|
|
*/
|
|
EAPI void
|
|
evas_focus_in(Evas *e)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return;
|
|
MAGIC_CHECK_END();
|
|
if (e->focus) return;
|
|
e->focus = 1;
|
|
evas_event_callback_call(e, EVAS_CALLBACK_CANVAS_FOCUS_IN, NULL);
|
|
}
|
|
|
|
/**
|
|
* Inform to the evas that it lost the focus.
|
|
*
|
|
* @param e The evas to change information.
|
|
* @ingroup Evas_Canvas
|
|
*/
|
|
EAPI void
|
|
evas_focus_out(Evas *e)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return;
|
|
MAGIC_CHECK_END();
|
|
if (!e->focus) return;
|
|
e->focus = 0;
|
|
evas_event_callback_call(e, EVAS_CALLBACK_CANVAS_FOCUS_OUT, NULL);
|
|
}
|
|
|
|
/**
|
|
* Get the focus state known by the given evas
|
|
*
|
|
* @param e The evas to query information.
|
|
* @ingroup Evas_Canvas
|
|
*/
|
|
EAPI Eina_Bool
|
|
evas_focus_state_get(const Evas *e)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return 0;
|
|
MAGIC_CHECK_END();
|
|
return e->focus;
|
|
}
|
|
|
|
/**
|
|
* Push the nochange flag up 1
|
|
*
|
|
* This tells evas, that while the nochange flag is greater than 0, do not
|
|
* mark objects as "changed" when making changes.
|
|
*
|
|
* @param e The evas to change information.
|
|
* @ingroup Evas_Canvas
|
|
*/
|
|
EAPI void
|
|
evas_nochange_push(Evas *e)
|
|
{
|
|
e->nochange++;
|
|
}
|
|
|
|
/**
|
|
* Pop the nochange flag down 1
|
|
*
|
|
* This tells evas, that while the nochange flag is greater than 0, do not
|
|
* mark objects as "changed" when making changes.
|
|
*
|
|
* @param e The evas to change information.
|
|
* @ingroup Evas_Canvas
|
|
*/
|
|
EAPI void
|
|
evas_nochange_pop(Evas *e)
|
|
{
|
|
e->nochange--;
|
|
}
|
|
|
|
void
|
|
_evas_walk(Evas *e)
|
|
{
|
|
e->walking_list++;
|
|
}
|
|
|
|
void
|
|
_evas_unwalk(Evas *e)
|
|
{
|
|
e->walking_list--;
|
|
if ((e->walking_list == 0) && (e->delete_me)) evas_free(e);
|
|
}
|
|
|
|
/**
|
|
* Converts the given error code into a string describing it in english.
|
|
* @param error the error code.
|
|
* @return Always return a valid string. If given @p error is not
|
|
* supported "Unknown error" is returned.
|
|
* @ingroup Evas_Utils
|
|
*/
|
|
EAPI const char *
|
|
evas_load_error_str(Evas_Load_Error error)
|
|
{
|
|
switch (error)
|
|
{
|
|
case EVAS_LOAD_ERROR_NONE:
|
|
return "No error on load";
|
|
case EVAS_LOAD_ERROR_GENERIC:
|
|
return "A non-specific error occurred";
|
|
case EVAS_LOAD_ERROR_DOES_NOT_EXIST:
|
|
return "File (or file path) does not exist";
|
|
case EVAS_LOAD_ERROR_PERMISSION_DENIED:
|
|
return "Permission deinied to an existing file (or path)";
|
|
case EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED:
|
|
return "Allocation of resources failure prevented load";
|
|
case EVAS_LOAD_ERROR_CORRUPT_FILE:
|
|
return "File corrupt (but was detected as a known format)";
|
|
case EVAS_LOAD_ERROR_UNKNOWN_FORMAT:
|
|
return "File is not a known format";
|
|
default:
|
|
return "Unknown error";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Convert a given color from HSV to RGB format.
|
|
*
|
|
* @param h The Hue component of the color.
|
|
* @param s The Saturation component of the color.
|
|
* @param v The Value component of the color.
|
|
* @param r The Red component of the color.
|
|
* @param g The Green component of the color.
|
|
* @param b The Blue component of the color.
|
|
*
|
|
* This function converts a given color in HSV color format to RGB
|
|
* color format.
|
|
*
|
|
* @ingroup Evas_Utils
|
|
**/
|
|
EAPI void
|
|
evas_color_hsv_to_rgb(float h, float s, float v, int *r, int *g, int *b)
|
|
{
|
|
evas_common_convert_color_hsv_to_rgb(h, s, v, r, g, b);
|
|
}
|
|
|
|
/**
|
|
* Convert a given color from RGB to HSV format.
|
|
*
|
|
* @param r The Red component of the color.
|
|
* @param g The Green component of the color.
|
|
* @param b The Blue component of the color.
|
|
* @param h The Hue component of the color.
|
|
* @param s The Saturation component of the color.
|
|
* @param v The Value component of the color.
|
|
*
|
|
* This function converts a given color in RGB color format to HSV
|
|
* color format.
|
|
*
|
|
* @ingroup Evas_Utils
|
|
**/
|
|
EAPI void
|
|
evas_color_rgb_to_hsv(int r, int g, int b, float *h, float *s, float *v)
|
|
{
|
|
evas_common_convert_color_rgb_to_hsv(r, g, b, h, s, v);
|
|
}
|
|
|
|
/**
|
|
* Pre-multiplies a rgb triplet by an alpha factor.
|
|
*
|
|
* @param a The alpha factor.
|
|
* @param r The Red component of the color.
|
|
* @param g The Green component of the color.
|
|
* @param b The Blue component of the color.
|
|
*
|
|
* This function pre-multiplies a given rbg triplet by an alpha
|
|
* factor. Alpha factor is used to define transparency.
|
|
*
|
|
* @ingroup Evas_Utils
|
|
**/
|
|
EAPI void
|
|
evas_color_argb_premul(int a, int *r, int *g, int *b)
|
|
{
|
|
evas_common_convert_color_argb_premul(a, r, g, b);
|
|
}
|
|
|
|
/**
|
|
* Undo pre-multiplication of a rgb triplet by an alpha factor.
|
|
*
|
|
* @param a The alpha factor.
|
|
* @param r The Red component of the color.
|
|
* @param g The Green component of the color.
|
|
* @param b The Blue component of the color.
|
|
*
|
|
* This function undoes pre-multiplication a given rbg triplet by an
|
|
* alpha factor. Alpha factor is used to define transparency.
|
|
*
|
|
* @see evas_color_argb_premul().
|
|
*
|
|
* @ingroup Evas_Utils
|
|
**/
|
|
EAPI void
|
|
evas_color_argb_unpremul(int a, int *r, int *g, int *b)
|
|
{
|
|
evas_common_convert_color_argb_unpremul(a, r, g, b);
|
|
}
|
|
|
|
/**
|
|
* Pre-multiplies data by an alpha factor.
|
|
*
|
|
* @param data The data value.
|
|
* @param len The length value.
|
|
*
|
|
* This function pre-multiplies a given data by an alpha
|
|
* factor. Alpha factor is used to define transparency.
|
|
*
|
|
* @ingroup Evas_Utils
|
|
**/
|
|
EAPI void
|
|
evas_data_argb_premul(unsigned int *data, unsigned int len)
|
|
{
|
|
if (!data || (len < 1)) return;
|
|
evas_common_convert_argb_premul(data, len);
|
|
}
|
|
|
|
/**
|
|
* Undo pre-multiplication data by an alpha factor.
|
|
*
|
|
* @param data The data value.
|
|
* @param len The length value.
|
|
*
|
|
* This function undoes pre-multiplication of a given data by an alpha
|
|
* factor. Alpha factor is used to define transparency.
|
|
*
|
|
* @ingroup Evas_Utils
|
|
**/
|
|
EAPI void
|
|
evas_data_argb_unpremul(unsigned int *data, unsigned int len)
|
|
{
|
|
if (!data || (len < 1)) return;
|
|
evas_common_convert_argb_unpremul(data, len);
|
|
}
|