256 lines
7.1 KiB
C
256 lines
7.1 KiB
C
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#include "evas_common.h"
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#include "evas_private.h"
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#include "Evas.h"
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/* private magic number for textblock objects */
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static const char o_type[] = "textblock";
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/* private struct for textblock object internal data */
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typedef struct _Evas_Object_Textblock Evas_Object_Textblock;
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struct _Evas_Object_Textblock
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{
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DATA32 magic;
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struct {
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char *text;
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char *font;
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char *source;
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Evas_Font_Size size;
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} cur, prev;
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char changed : 1;
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void *engine_data;
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};
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/* private methods for textblock objects */
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static void evas_object_textblock_init(Evas_Object *obj);
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static void *evas_object_textblock_new(void);
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static void evas_object_textblock_render(Evas_Object *obj, void *output, void *context, void *surface, int x, int y);
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static void evas_object_textblock_free(Evas_Object *obj);
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static void evas_object_textblock_render_pre(Evas_Object *obj);
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static void evas_object_textblock_render_post(Evas_Object *obj);
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static int evas_object_textblock_is_opaque(Evas_Object *obj);
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static int evas_object_textblock_was_opaque(Evas_Object *obj);
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static Evas_Object_Func object_func =
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{
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/* methods (compulsory) */
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evas_object_textblock_free,
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evas_object_textblock_render,
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evas_object_textblock_render_pre,
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evas_object_textblock_render_post,
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/* these are optional. NULL = nothing */
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NULL,
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NULL,
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NULL,
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NULL,
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evas_object_textblock_is_opaque,
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evas_object_textblock_was_opaque,
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NULL,
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NULL,
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NULL
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};
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/* the actual api call to add a rect */
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/* it has no other api calls as all properties are standard */
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/**
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* Adds a textblock to the given evas.
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* @param e The given evas.
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* @return The new textblock object.
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* @todo Find a documentation group to put this under.
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*/
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Evas_Object *
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evas_object_textblock_add(Evas *e)
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{
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Evas_Object *obj;
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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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obj = evas_object_new();
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evas_object_textblock_init(obj);
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evas_object_inject(obj, e);
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return obj;
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}
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/* all nice and private */
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static void
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evas_object_textblock_init(Evas_Object *obj)
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{
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/* alloc image ob, setup methods and default values */
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obj->object_data = evas_object_textblock_new();
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/* set up default settings for this kind of object */
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obj->cur.color.r = 255;
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obj->cur.color.g = 255;
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obj->cur.color.b = 255;
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obj->cur.color.a = 255;
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obj->cur.geometry.x = 0.0;
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obj->cur.geometry.y = 0.0;
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obj->cur.geometry.w = 0.0;
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obj->cur.geometry.h = 0.0;
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obj->cur.layer = 0;
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/* set up object-specific settings */
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obj->prev = obj->cur;
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/* set up methods (compulsory) */
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obj->func = &object_func;
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obj->type = o_type;
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}
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static void *
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evas_object_textblock_new(void)
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{
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Evas_Object_Textblock *o;
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/* alloc obj private data */
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o = calloc(1, sizeof(Evas_Object_Textblock));
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o->magic = MAGIC_OBJ_TEXTBLOCK;
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return o;
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}
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static void
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evas_object_textblock_free(Evas_Object *obj)
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{
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Evas_Object_Textblock *o;
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/* frees private object data. very simple here */
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o = (Evas_Object_Textblock *)(obj->object_data);
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MAGIC_CHECK(o, Evas_Object_Textblock, MAGIC_OBJ_TEXTBLOCK);
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return;
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MAGIC_CHECK_END();
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/* free obj */
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o->magic = 0;
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free(o);
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}
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static void
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evas_object_textblock_render(Evas_Object *obj, void *output, void *context, void *surface, int x, int y)
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{
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Evas_Object_Textblock *o;
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/* render object to surface with context, and offxet by x,y */
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o = (Evas_Object_Textblock *)(obj->object_data);
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obj->layer->evas->engine.func->context_multiplier_unset(output,
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context);
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obj->layer->evas->engine.func->context_color_set(output,
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context,
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obj->cur.cache.clip.r,
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obj->cur.cache.clip.g,
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obj->cur.cache.clip.b,
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obj->cur.cache.clip.a);
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if (o->engine_data)
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{
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}
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}
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static void
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evas_object_textblock_render_pre(Evas_Object *obj)
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{
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Evas_List *updates = NULL;
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Evas_Object_Textblock *o;
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int is_v, was_v;
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/* dont pre-render the obj twice! */
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if (obj->pre_render_done) return;
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obj->pre_render_done = 1;
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/* pre-render phase. this does anything an object needs to do just before */
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/* rendering. this could mean loading the image data, retrieving it from */
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/* elsewhere, decoding video etc. */
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/* then when this is done the object needs to figure if it changed and */
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/* if so what and where and add the appropriate redraw textblocks */
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o = (Evas_Object_Textblock *)(obj->object_data);
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/* if someone is clipping this obj - go calculate the clipper */
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if (obj->cur.clipper)
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{
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evas_object_clip_recalc(obj->cur.clipper);
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obj->cur.clipper->func->render_pre(obj->cur.clipper);
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}
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/* now figure what changed and add draw rects */
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/* if it just became visible or invisible */
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is_v = evas_object_is_visible(obj);
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was_v = evas_object_was_visible(obj);
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if (is_v != was_v)
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{
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updates = evas_object_render_pre_visible_change(updates, obj, is_v, was_v);
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goto done;
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}
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/* it's not visible - we accounted for it appearing or not so just abort */
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if (!is_v) goto done;
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/* clipper changed this is in addition to anything else for obj */
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updates = evas_object_render_pre_clipper_change(updates, obj);
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/* if we restacked (layer or just within a layer) and don't clip anyone */
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if (obj->restack)
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{
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updates = evas_object_render_pre_prev_cur_add(updates, obj);
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goto done;
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}
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/* if it changed color */
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if ((obj->cur.color.r != obj->prev.color.r) ||
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(obj->cur.color.g != obj->prev.color.g) ||
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(obj->cur.color.b != obj->prev.color.b) ||
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(obj->cur.color.a != obj->prev.color.a))
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{
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updates = evas_object_render_pre_prev_cur_add(updates, obj);
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goto done;
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}
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if (o->changed)
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{
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/* FIXME: calc sub-area changes */
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}
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done:
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evas_object_render_pre_effect_updates(updates, obj, is_v, was_v);
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}
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static void
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evas_object_textblock_render_post(Evas_Object *obj)
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{
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Evas_Object_Textblock *o;
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/* this moves the current data to the previous state parts of the object */
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/* in whatever way is safest for the object. also if we don't need object */
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/* data anymore we can free it if the object deems this is a good idea */
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o = (Evas_Object_Textblock *)(obj->object_data);
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/* remove those pesky changes */
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while (obj->clip.changes)
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{
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Evas_Rectangle *r;
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r = (Evas_Rectangle *)obj->clip.changes->data;
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obj->clip.changes = evas_list_remove(obj->clip.changes, r);
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free(r);
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}
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/* move cur to prev safely for object data */
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obj->prev = obj->cur;
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o->prev = o->cur;
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o->changed = 0;
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}
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static int
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evas_object_textblock_is_opaque(Evas_Object *obj)
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{
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Evas_Object_Textblock *o;
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/* this returns 1 if the internal object data implies that the object is */
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/* currently fulyl opque over the entire gradient it occupies */
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o = (Evas_Object_Textblock *)(obj->object_data);
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return 0;
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}
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static int
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evas_object_textblock_was_opaque(Evas_Object *obj)
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{
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Evas_Object_Textblock *o;
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/* this returns 1 if the internal object data implies that the object was */
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/* currently fulyl opque over the entire gradient it occupies */
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o = (Evas_Object_Textblock *)(obj->object_data);
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return 0;
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}
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