971 lines
28 KiB
C
971 lines
28 KiB
C
#include "evas_common.h"
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#include "evas_private.h"
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#ifdef BUILD_ENGINE_SOFTWARE_X11
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#include "evas_engine_api_software_x11.h"
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#endif
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#ifdef BUILD_ENGINE_SOFTWARE_XCB
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#include "evas_engine_api_software_xcb.h"
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#endif
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#ifdef BUILD_ENGINE_DIRECTFB
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#include "evas_engine_api_directfb.h"
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#endif
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#ifdef BUILD_ENGINE_FB
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#include "evas_engine_api_fb.h"
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#endif
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#ifdef BUILD_ENGINE_BUFFER
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#include "evas_engine_api_buffer.h"
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#endif
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#ifdef BUILD_ENGINE_SOFTWARE_WIN32_GDI
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#include "evas_engine_api_software_win32_gdi.h"
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#endif
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#ifdef BUILD_ENGINE_SOFTWARE_QTOPIA
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#include "evas_engine_api_software_qtopia.h"
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#endif
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#ifdef BUILD_ENGINE_GL_X11
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#include "evas_engine_api_gl_x11.h"
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#endif
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#ifdef BUILD_ENGINE_CAIRO_X11
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#include "evas_engine_api_cairo_x11.h"
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#endif
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#include "Evas.h"
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static int initcount = 0;
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int
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evas_init(void)
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{
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return ++initcount;
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}
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int
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evas_shutdown(void)
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{
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if (--initcount == 0)
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evas_font_dir_cache_free();
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return initcount;
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}
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/**
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* @defgroup Evas_Canvas Evas Canvas
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*
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* Functions that deal with the basic evas object. They are the
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* functions you need to use at a minimum to get a working evas, and
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* to destroy it.
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*
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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 with
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* @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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* @return A new uninitialised Evas canvas on success. Otherwise, @c NULL.
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* @ingroup Evas_Canvas
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*/
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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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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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* @ingroup Evas_Canvas
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*/
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void
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evas_free(Evas *e)
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{
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Evas_Object_List *l;
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int i;
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int del = 1;
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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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while (del != 0)
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{
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del = 0;
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for (l = (Evas_Object_List *)(e->layers); l; l = l->next)
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{
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Evas_Layer *lay;
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Evas_Object_List *ll;
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lay = (Evas_Layer *)l;
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evas_layer_pre_free(lay);
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for (ll = (Evas_Object_List *)lay->objects; ll; ll = ll->next)
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{
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Evas_Object *o;
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o = (Evas_Object *)ll;
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if (!o->delete_me)
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del += o->delete_me;
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}
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}
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}
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while (e->layers)
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{
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Evas_Layer *lay;
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lay = e->layers;
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evas_layer_del(lay);
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evas_layer_free(lay);
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}
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evas_font_path_clear(e);
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e->pointer.object.in = evas_list_free(e->pointer.object.in);
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if (e->name_hash) evas_hash_free(e->name_hash);
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while (e->damages)
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{
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free(e->damages->data);
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e->damages = evas_list_remove(e->damages, e->damages->data);
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}
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while (e->obscures)
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{
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free(e->obscures->data);
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e->obscures = evas_list_remove(e->obscures, e->obscures->data);
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}
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e->engine.func->info_free(e, e->engine.info);
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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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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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e->magic = 0;
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free(e);
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}
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/**
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* @defgroup Evas_Output_Method Evas Render Engine Functions
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*
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* Functions that are used to set the render engine for a given function, and
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* then get that engine working.
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*
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* The following code snippet shows how they can be used to
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* initialise an evas that uses the X11 software engine:
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* @code
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* Evas *evas;
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* Evas_Engine_Info_Software_X11 *einfo;
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* extern Display *display;
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* extern Window win;
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*
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* evas = evas_new();
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* evas_output_method_set(evas, evas_render_method_lookup("software_x11"));
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* evas_output_size_set(evas, 640, 480);
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* evas_output_viewport_set(evas, 0, 0, 640, 480);
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* einfo = (Evas_Engine_Info_Software_X11 *)evas_engine_info_get(evas);
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* einfo->info.display = display;
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* einfo->info.visual = DefaultVisual(display, DefaultScreen(display));
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* einfo->info.colormap = DefaultColormap(display, DefaultScreen(display));
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* einfo->info.drawable = win;
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* einfo->info.depth = DefaultDepth(display, DefaultScreen(display));
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* evas_engine_info_set(evas, (Evas_Engine_Info *)einfo);
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* @endcode
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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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* @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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void
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evas_output_method_set(Evas *e, int render_method)
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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 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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/* set the render method */
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e->output.render_method = render_method;
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#ifdef BUILD_ENGINE_SOFTWARE_X11
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if (e->output.render_method == RENDER_METHOD_SOFTWARE_X11)
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e->engine.func = &evas_engine_software_x11_func;
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else
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#endif
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#ifdef BUILD_ENGINE_SOFTWARE_XCB
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if (e->output.render_method == RENDER_METHOD_SOFTWARE_XCB)
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e->engine.func = &evas_engine_software_xcb_func;
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else
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#endif
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#ifdef BUILD_ENGINE_GL_X11
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if (e->output.render_method == RENDER_METHOD_GL_X11)
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e->engine.func = &evas_engine_gl_x11_func;
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else
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#endif
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#ifdef BUILD_ENGINE_CAIRO_X11
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if (e->output.render_method == RENDER_METHOD_CAIRO_X11)
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e->engine.func = &evas_engine_cairo_x11_func;
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else
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#endif
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#ifdef BUILD_ENGINE_DIRECTFB
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if (e->output.render_method == RENDER_METHOD_DIRECTFB)
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e->engine.func = &evas_engine_directfb_func;
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else
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#endif
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#ifdef BUILD_ENGINE_FB
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if (e->output.render_method == RENDER_METHOD_FB)
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e->engine.func = &evas_engine_fb_func;
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else
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#endif
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#ifdef BUILD_ENGINE_BUFFER
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if (e->output.render_method == RENDER_METHOD_BUFFER)
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e->engine.func = &evas_engine_buffer_func;
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else
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#endif
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#ifdef BUILD_ENGINE_SOFTWARE_WIN32_GDI
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if (e->output.render_method == RENDER_METHOD_SOFTWARE_WIN32_GDI)
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e->engine.func = &evas_engine_software_win32_gdi_func;
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else
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#endif
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#ifdef BUILD_ENGINE_SOFTWARE_QTOPIA
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if (e->output.render_method == RENDER_METHOD_SOFTWARE_QTOPIA)
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e->engine.func = &evas_engine_software_qtopia_func;
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else
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#endif
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return;
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/* get the engine info struct */
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if (e->output.render_method != RENDER_METHOD_INVALID)
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{
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if (e->engine.func->info) e->engine.info = e->engine.func->info(e);
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}
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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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int
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evas_output_method_get(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 valid
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* until either @ref evas_engine_info_set or @ref evas_render 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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Evas_Engine_Info *
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evas_engine_info_get(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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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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* Example:
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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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* @ingroup Evas_Output_Method
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*/
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void
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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;
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MAGIC_CHECK_END();
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if (!info) return;
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if (info != e->engine.info) return;
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if (info->magic != e->engine.info_magic) return;
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e->engine.func->setup(e, info);
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}
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/**
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* @defgroup Evas_Output_Size Evas Output and Viewport Resizing Functions
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*
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* Functions that set and retrieve the output and viewport size of an evas.
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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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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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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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}
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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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void
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evas_output_size_get(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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* 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 the
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* viewer. The viewport will be stretched to fit the output target of the
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* 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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*
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* @param e The given evas.
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* @param x The top-left corner x value of the viewport.
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* @param y The top-left corner y value of the viewport.
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* @param w The width of the viewport. Must be greater than 0.
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* @param h The height of the viewport. Must be greater than 0.
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* @ingroup Evas_Output_Size
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*/
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void
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evas_output_viewport_set(Evas *e, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord 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 ((x == e->viewport.x) && (y == e->viewport.y) &&
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(w == e->viewport.w) && (h == e->viewport.h)) return;
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if (w <= 0) return;
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if (h <= 0) return;
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e->viewport.x = x;
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e->viewport.y = y;
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e->viewport.w = w;
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e->viewport.h = h;
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e->viewport.changed = 1;
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e->output_validity++;
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e->changed = 1;
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}
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/**
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* Get the render engine's output viewport co-ordinates in canvas units.
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* @param e The pointer to the Evas Canvas
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* @param x The pointer to a x variable to be filled in
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* @param y The pointer to a y variable to be filled in
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* @param w The pointer to a width variable to be filled in
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* @param h The pointer to a height variable to be filled in
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* @ingroup Evas_Output_Size
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*
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* Calling this function writes the current canvas output viewport size and
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* location values into the variables pointed to by @p x, @p y, @p w and @p h.
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* On success the variables have the output location and size values written to
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* them in canvas units. Any of @p x, @p y, @p w or @p h that are NULL will not
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* be written to. If @p e is invalid, the results are undefined.
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*
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* Example:
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* @code
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* extern Evas *evas;
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* Evas_Coord x, y, width, height;
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*
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* evas_output_viewport_get(evas, &x, &y, &w, &h);
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* @endcode
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*/
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void
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evas_output_viewport_get(Evas *e, Evas_Coord *x, Evas_Coord *y, Evas_Coord *w, Evas_Coord *h)
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{
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MAGIC_CHECK(e, Evas, MAGIC_EVAS);
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if (x) *x = 0;
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if (y) *y = 0;
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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 (x) *x = e->viewport.x;
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if (y) *y = e->viewport.y;
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if (w) *w = e->viewport.w;
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if (h) *h = e->viewport.h;
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}
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/**
|
|
* @defgroup Evas_Coord_Mapping_Group Evas Coordinate Mapping Functions
|
|
*
|
|
* Functions that are used to map coordinates from the canvas to the
|
|
* screen or the screen to the canvas.
|
|
*/
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
Evas_Coord
|
|
evas_coord_screen_x_to_world(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
|
|
*/
|
|
Evas_Coord
|
|
evas_coord_screen_y_to_world(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
|
|
*/
|
|
int
|
|
evas_coord_world_x_to_screen(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
|
|
*/
|
|
int
|
|
evas_coord_world_y_to_screen(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.
|
|
*
|
|
* Example:
|
|
* @code
|
|
* int engine_id;
|
|
* Evas *evas;
|
|
*
|
|
* 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
|
|
*/
|
|
int
|
|
evas_render_method_lookup(const char *name)
|
|
{
|
|
if (!name) return RENDER_METHOD_INVALID;
|
|
|
|
#ifdef BUILD_ENGINE_SOFTWARE_X11
|
|
if (!strcmp(name, "software_x11")) return RENDER_METHOD_SOFTWARE_X11;
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_XCB
|
|
if (!strcmp(name, "software_xcb")) return RENDER_METHOD_SOFTWARE_XCB;
|
|
#endif
|
|
#ifdef BUILD_ENGINE_GL_X11
|
|
if (!strcmp(name, "gl_x11")) return RENDER_METHOD_GL_X11;
|
|
#endif
|
|
#ifdef BUILD_ENGINE_CAIRO_X11
|
|
if (!strcmp(name, "cairo_x11")) return RENDER_METHOD_CAIRO_X11;
|
|
#endif
|
|
#ifdef BUILD_ENGINE_DIRECTFB
|
|
if (!strcmp(name, "directfb")) return RENDER_METHOD_DIRECTFB;
|
|
#endif
|
|
#ifdef BUILD_ENGINE_FB
|
|
if (!strcmp(name, "fb")) return RENDER_METHOD_FB;
|
|
#endif
|
|
#ifdef BUILD_ENGINE_BUFFER
|
|
if (!strcmp(name, "buffer")) return RENDER_METHOD_BUFFER;
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_WIN32_GDI
|
|
if (!strcmp(name, "software_win32_gdi")) return RENDER_METHOD_SOFTWARE_WIN32_GDI;
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_QTOPIA
|
|
if (!strcmp(name, "software_qtopia")) return RENDER_METHOD_SOFTWARE_QTOPIA;
|
|
#endif
|
|
return RENDER_METHOD_INVALID;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* Evas_List *engine_list, *l;
|
|
*
|
|
* 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");
|
|
* for (l = engine_list; l; l = l->next)
|
|
* {
|
|
* char *engine_name;
|
|
*
|
|
* engine_name = l->data;
|
|
* printf("%s\n", engine_name);
|
|
* }
|
|
* evas_render_method_list_free(engine_list);
|
|
* @endcode
|
|
*/
|
|
Evas_List *
|
|
evas_render_method_list(void)
|
|
{
|
|
Evas_List *methods = NULL;
|
|
|
|
#ifdef BUILD_ENGINE_SOFTWARE_X11
|
|
methods = evas_list_append(methods, strdup("software_x11"));
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_XCB
|
|
methods = evas_list_append(methods, strdup("software_xcb"));
|
|
#endif
|
|
#ifdef BUILD_ENGINE_GL_X11
|
|
methods = evas_list_append(methods, strdup("gl_x11"));
|
|
#endif
|
|
#ifdef BUILD_ENGINE_CAIRO_X11
|
|
methods = evas_list_append(methods, strdup("cairo_x11"));
|
|
#endif
|
|
#ifdef BUILD_ENGINE_DIRECTFB
|
|
methods = evas_list_append(methods, strdup("directfb"));
|
|
#endif
|
|
#ifdef BUILD_ENGINE_FB
|
|
methods = evas_list_append(methods, strdup("fb"));
|
|
#endif
|
|
#ifdef BUILD_ENGINE_BUFFER
|
|
methods = evas_list_append(methods, strdup("buffer"));
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_WIN32_GDI
|
|
methods = evas_list_append(methods, strdup("software_win32_gdi"));
|
|
#endif
|
|
#ifdef BUILD_ENGINE_SOFTWARE_QTOPIA
|
|
methods = evas_list_append(methods, strdup("software_qtopia"));
|
|
#endif
|
|
|
|
return methods;
|
|
}
|
|
|
|
/**
|
|
* This function should be called to free a list of engine names
|
|
*
|
|
* @param list The Evas_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
|
|
* Evas_List *engine_list, *l;
|
|
*
|
|
* 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");
|
|
* for (l = engine_list; l; l = l->next)
|
|
* {
|
|
* char *engine_name;
|
|
*
|
|
* engine_name = l->data;
|
|
* printf("%s\n", engine_name);
|
|
* }
|
|
* evas_render_method_list_free(engine_list);
|
|
* @endcode
|
|
*/
|
|
void
|
|
evas_render_method_list_free(Evas_List *list)
|
|
{
|
|
while (list)
|
|
{
|
|
free(list->data);
|
|
list = evas_list_remove(list, list->data);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @defgroup Evas_Pointer_Group Evas Pointer Functions
|
|
*
|
|
* Functions that deal with the status of the pointer.
|
|
*/
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
void
|
|
evas_pointer_output_xy_get(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
|
|
*/
|
|
void
|
|
evas_pointer_canvas_xy_get(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
|
|
*/
|
|
int
|
|
evas_pointer_button_down_mask_get(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
|
|
*/
|
|
Evas_Bool
|
|
evas_pointer_inside_get(Evas *e)
|
|
{
|
|
MAGIC_CHECK(e, Evas, MAGIC_EVAS);
|
|
return 0;
|
|
MAGIC_CHECK_END();
|
|
return (int)e->pointer.inside;
|
|
}
|