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efl/src/lib/elementary/efl_ui_list_precise_layouter.c

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#ifdef HAVE_CONFIG_H
# include "elementary_config.h"
#endif
#include <Elementary.h>
#include <assert.h>
#include "elm_priv.h"
#include "efl_ui_list_segarray.h"
#define MY_CLASS EFL_UI_LIST_PRECISE_LAYOUTER_CLASS
typedef struct _Efl_Ui_List_Precise_Layouter_Data
{
Eina_Bool initialized;
Eina_Bool recalc;
Eina_Bool resize;
Eina_Size2D min;
Efl_Model* model;
Efl_Ui_List_Model *modeler;
Efl_Future *count_future;
Ecore_Job *calc_job;
Efl_Ui_List_SegArray *segarray;
int first;
int count_total;
unsigned int calc_progress;
} Efl_Ui_List_Precise_Layouter_Data;
typedef struct _Efl_Ui_List_Precise_Layouter_Node_Data
{
Eina_Size2D min;
Eina_Size2D size;
Eina_Bool realized;
} Efl_Ui_List_Precise_Layouter_Node_Data;
typedef struct _Efl_Ui_List_Precise_Layouter_Callback_Data
{
Efl_Ui_List_Precise_Layouter_Data* pd;
Efl_Ui_List_LayoutItem* item;
} Efl_Ui_List_Precise_Layouter_Callback_Data;
#include "efl_ui_list_precise_layouter.eo.h"
static void _efl_ui_list_relayout_layout_do(Efl_Ui_List_Precise_Layouter_Data *);
static void _initilize(Eo *, Efl_Ui_List_Precise_Layouter_Data*, Efl_Ui_List_Model*, Efl_Ui_List_SegArray*);
static void _finalize(Eo *, Efl_Ui_List_Precise_Layouter_Data*);
static void _node_realize(Efl_Ui_List_Precise_Layouter_Data*, Efl_Ui_List_SegArray_Node*);
static void _node_unrealize(Efl_Ui_List_Precise_Layouter_Data*, Efl_Ui_List_SegArray_Node*);
static void
_item_size_calc(Efl_Ui_List_Precise_Layouter_Data *pd, Efl_Ui_List_LayoutItem* item)
{
int boxx, boxy, boxw, boxh, boxl, boxr, boxt, boxb, pad[4];
double align[2];
Eina_Size2D max;
efl_gfx_size_hint_margin_get(item->layout, &pad[0], &pad[1], &pad[2], &pad[3]);
evas_object_geometry_get(pd->modeler, &boxx, &boxy, &boxw, &boxh);
efl_gfx_size_hint_margin_get(pd->modeler, &boxl, &boxr, &boxt, &boxb);
efl_gfx_size_hint_align_get(item->layout, &align[0], &align[1]);
max = efl_gfx_size_hint_max_get(item->layout);
// box outer margin
boxw -= boxl + boxr;
boxh -= boxt + boxb;
boxx += boxl;
boxy += boxt;
if (align[0] < 0) align[0] = -1;
if (align[1] < 0) align[1] = -1;
if (align[0] > 1) align[0] = 1;
if (align[1] > 1) align[1] = 1;
if (max.w <= 0) max.w = INT_MAX;
if (max.h <= 0) max.h = INT_MAX;
if (max.w < item->min.w) max.w = item->min.w;
if (max.h < item->min.h) max.h = item->min.h;
// horizontally
if (max.w < INT_MAX)
{
item->size.w = MIN(MAX(item->min.w - pad[0] - pad[1], max.w), boxw);
item->pos.x = boxx + pad[0];
}
else if (align[0] < 0)
{
// fill x
item->size.w = boxw - pad[0] - pad[1];
item->pos.x = boxx + pad[0];
}
else
{
item->size.w = item->min.w - pad[0] - pad[1];
item->pos.x = boxx + ((boxw - item->size.w) * align[0]) + pad[0];
}
// vertically
if (max.h < INT_MAX)
{
item->size.h = MIN(MAX(item->min.h - pad[2] - pad[3], max.h), boxh);
item->pos.y = boxy + pad[2];
}
else if (align[1] < 0)
{
// fill y
item->size.h = item->min.h - pad[2] - pad[3];
item->pos.y = boxy + pad[2];
}
else
{
item->size.h = item->min.h - pad[2] - pad[3];
item->pos.y = boxy + ((item->min.h - item->size.h) * align[1]) + pad[2];
}
}
static void
_item_min_calc(Efl_Ui_List_Precise_Layouter_Data *pd, Efl_Ui_List_LayoutItem* item
, Eina_Size2D min, Efl_Ui_List_SegArray_Node *itemnode)
{
Efl_Ui_List_Precise_Layouter_Node_Data *nodedata = itemnode->layout_data;
Efl_Ui_List_LayoutItem *layout_item;
int i, pad[4];
efl_gfx_size_hint_margin_get(item->layout, &pad[0], &pad[1], &pad[2], &pad[3]);
min.w += pad[0] + pad[1];
min.h += pad[2] + pad[3];
if (item->min.h == min.h && item->min.w == min.w)
return;
pd->min.h += min.h - item->min.h;
nodedata->min.h += min.h - item->min.h;
if (nodedata->min.w <= min.w)
nodedata->min.w = min.w;
else if (nodedata->min.w == item->min.w)
{
nodedata->min.w = 0;
for (i = 0; i != itemnode->length; ++i)
{
layout_item = (Efl_Ui_List_LayoutItem *)itemnode->pointers[i];
if (nodedata->min.w < layout_item->min.w)
nodedata->min.w = layout_item->min.w;
if (item->min.w == layout_item->min.w)
break;
}
}
if (pd->min.w <= min.w)
pd->min.w = min.w;
else if (pd->min.w == item->min.w)
{
Efl_Ui_List_SegArray_Node *node2;
Eina_Accessor *nodes = efl_ui_list_segarray_node_accessor_get(pd->segarray);
pd->min.w = min.w;
EINA_ACCESSOR_FOREACH(nodes, i, node2)
{
Efl_Ui_List_Precise_Layouter_Node_Data *nodedata2 = node2->layout_data;
if (pd->min.w < nodedata2->min.w)
pd->min.w = nodedata2->min.w;
if (item->min.w == nodedata2->min.w)
break;
}
eina_accessor_free(nodes);
}
item->min.w = min.w;
item->min.h = min.h;
_item_size_calc(pd, item);
}
static void
_count_then(void * data, Efl_Event const* event)
{
Efl_Ui_List_Precise_Layouter_Data *pd = data;
EINA_SAFETY_ON_NULL_RETURN(pd);
pd->count_future = NULL;
pd->count_total = *(int*)((Efl_Future_Event_Success*)event->info)->value;
if (pd->modeler && (pd->count_total != efl_ui_list_segarray_count(pd->segarray)))
{
pd->recalc = EINA_TRUE;
efl_ui_list_model_load_range_set(pd->modeler, 0, 0); // load all
}
}
static void
_count_error(void * data, Efl_Event const* event EINA_UNUSED)
{
Efl_Ui_List_Precise_Layouter_Data *pd = data;
EINA_SAFETY_ON_NULL_RETURN(pd);
pd->count_future = NULL;
}
static void
_on_item_size_hint_change(void *data, Evas *e EINA_UNUSED,
Evas_Object *obj, void *event_info EINA_UNUSED)
{
Efl_Ui_List_Precise_Layouter_Callback_Data *cb_data = data;
Efl_Ui_List_Precise_Layouter_Data *pd = cb_data->pd;
Efl_Ui_List_LayoutItem *item = cb_data->item;;
Efl_Ui_List_SegArray_Node *node = item->tree_node;
Efl_Ui_List_Precise_Layouter_Node_Data *nodedata = node->layout_data;
Eina_Size2D min = efl_gfx_size_hint_combined_min_get(obj);
_item_min_calc(pd, item, min, node);
if (!nodedata->realized)
{
free(evas_object_event_callback_del(item->layout, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _on_item_size_hint_change));
efl_ui_list_model_unrealize(pd->modeler, item);
}
}
static void
_on_modeler_resize(void *data, Evas *e EINA_UNUSED,
Evas_Object *obj EINA_UNUSED, void *event_info EINA_UNUSED)
{
Efl_Ui_List_Precise_Layouter_Data *pd = data;
pd->resize = EINA_TRUE;
}
static void
_child_added_cb(void *data, const Efl_Event *event)
{
Efl_Model_Children_Event* evt = event->info;
Efl_Ui_List_Precise_Layouter_Data *pd = data;
efl_ui_list_segarray_insert(pd->segarray, evt->index, evt->child);
pd->recalc = EINA_TRUE;
evas_object_smart_changed(pd->modeler);
}
static void
_child_removed_cb(void *data, const Efl_Event *event)
{
Efl_Model_Children_Event* evt = event->info;
Efl_Ui_List_Precise_Layouter_Data *pd = data;
Efl_Ui_List_LayoutItem *layout_item, *litem;
Efl_Ui_List_Precise_Layouter_Node_Data *nodedata;
Efl_Ui_List_SegArray_Node *itemnode;
Efl_Ui_List_Item* item;
int i;
item = efl_ui_list_segarray_remove(pd->segarray, evt->index);
if (!item) return;
litem = (Efl_Ui_List_LayoutItem *)item;
itemnode = litem->tree_node;
nodedata = itemnode->layout_data;
free(evas_object_event_callback_del(litem->layout, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _on_item_size_hint_change));
pd->min.h -= litem->min.h;
nodedata->min.h -= litem->min.h;
if (nodedata->min.w == litem->min.w)
nodedata->min.w = 0;
for (i = 0; i != itemnode->length; ++i)
{
layout_item = (Efl_Ui_List_LayoutItem *)itemnode->pointers[i];
if (nodedata->min.w < layout_item->min.w)
nodedata->min.w = layout_item->min.w;
if (litem->min.w == layout_item->min.w)
{
nodedata->min.w = layout_item->min.w;
break;
}
}
if (pd->min.w == litem->min.w)
{
Efl_Ui_List_SegArray_Node *node2;
Eina_Accessor *nodes = efl_ui_list_segarray_node_accessor_get(pd->segarray);
pd->min.w = 0;
EINA_ACCESSOR_FOREACH(nodes, i, node2)
{
Efl_Ui_List_Precise_Layouter_Node_Data *nodedata2 = node2->layout_data;
if (pd->min.w < nodedata2->min.w)
pd->min.w = nodedata2->min.w;
if (litem->min.w == nodedata2->min.w)
break;
}
eina_accessor_free(nodes);
}
efl_ui_list_model_unrealize(pd->modeler, litem);
free(item);
pd->recalc = EINA_TRUE;
evas_object_smart_changed(pd->modeler);
}
static void
_initilize(Eo *obj EINA_UNUSED, Efl_Ui_List_Precise_Layouter_Data *pd, Efl_Ui_List_Model *modeler, Efl_Ui_List_SegArray *segarray)
{
if(pd->initialized)
return;
pd->recalc = EINA_TRUE;
pd->initialized = EINA_TRUE;
pd->modeler = modeler;
pd->segarray = segarray;
evas_object_event_callback_add(modeler, EVAS_CALLBACK_RESIZE, _on_modeler_resize, pd);
// efl_event_callback_add(pd->model, EFL_MODEL_EVENT_CHILDREN_COUNT_CHANGED, _count_changed, pd);
efl_event_callback_add(pd->model, EFL_MODEL_EVENT_CHILD_ADDED, _child_added_cb, pd);
efl_event_callback_add(pd->model, EFL_MODEL_EVENT_CHILD_REMOVED, _child_removed_cb, pd);
efl_ui_list_model_load_range_set(modeler, 0, 0); // load all
pd->min.w = 0;
pd->min.h = 0;
}
static void
_finalize(Eo *obj EINA_UNUSED, Efl_Ui_List_Precise_Layouter_Data *pd)
{
Efl_Ui_List_SegArray_Node* node;
int i = 0;
evas_object_event_callback_del_full(pd->modeler, EVAS_CALLBACK_RESIZE, _on_modeler_resize, pd);
efl_event_callback_del(pd->model, EFL_MODEL_EVENT_CHILD_ADDED, _child_added_cb, pd);
efl_event_callback_del(pd->model, EFL_MODEL_EVENT_CHILD_REMOVED, _child_removed_cb, pd);
// efl_event_callback_del(pd->model, EFL_MODEL_EVENT_CHILDREN_COUNT_CHANGED, _count_changed, pd);
Eina_Accessor *nodes = efl_ui_list_segarray_node_accessor_get(pd->segarray);
EINA_ACCESSOR_FOREACH(nodes, i, node)
{
_node_unrealize(pd, node);
free(node->layout_data);
}
eina_accessor_free(nodes);
pd->min.w = 0;
pd->min.h = 0;
efl_ui_list_model_min_size_set(pd->modeler, pd->min);
pd->segarray = NULL;
pd->modeler = NULL;
pd->initialized = EINA_FALSE;
}
static void
_node_realize(Efl_Ui_List_Precise_Layouter_Data *pd, Efl_Ui_List_SegArray_Node *node)
{
Efl_Ui_List_LayoutItem* layout_item;
Efl_Ui_List_Precise_Layouter_Callback_Data *cb_data;
Efl_Ui_List_Precise_Layouter_Node_Data *nodedata = node->layout_data;
int i;
if (nodedata->realized)
return;
nodedata->realized = EINA_TRUE;
for (i = 0; i != node->length; ++i)
{
layout_item = (Efl_Ui_List_LayoutItem *)node->pointers[i];
efl_ui_list_model_realize(pd->modeler, layout_item);
if (layout_item->layout)
{
cb_data = calloc(1, sizeof(Efl_Ui_List_Precise_Layouter_Callback_Data));
cb_data->pd = pd;
cb_data->item = layout_item;
evas_object_event_callback_add(layout_item->layout, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _on_item_size_hint_change, cb_data);
_item_size_calc(pd, layout_item);
}
}
}
static void
_node_unrealize(Efl_Ui_List_Precise_Layouter_Data *pd, Efl_Ui_List_SegArray_Node *node)
{
Efl_Ui_List_LayoutItem* layout_item;
Efl_Ui_List_Precise_Layouter_Callback_Data *cb_data;
Efl_Ui_List_Precise_Layouter_Node_Data *nodedata = node->layout_data;
int i;
if (!nodedata->realized)
return;
nodedata->realized = EINA_FALSE;
for (i = 0; i != node->length; ++i)
{
layout_item = (Efl_Ui_List_LayoutItem *)node->pointers[i];
if (layout_item->layout)
{
cb_data = evas_object_event_callback_del(layout_item->layout, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _on_item_size_hint_change);
free(cb_data);
}
efl_ui_list_model_unrealize(pd->modeler, layout_item);
}
}
static void
_calc_range(Efl_Ui_List_Precise_Layouter_Data *pd)
{
Efl_Ui_List_SegArray_Node *node;
Evas_Coord ch;
Eina_Rect vgmt;
Eina_Position2D spos;
Efl_Ui_List_Precise_Layouter_Node_Data *nodedata;
int i;
vgmt = efl_ui_scrollable_viewport_geometry_get(pd->modeler);
spos = efl_ui_scrollable_content_pos_get(pd->modeler);
ch = 0;
Eina_Accessor *nodes = efl_ui_list_segarray_node_accessor_get(pd->segarray);
EINA_ACCESSOR_FOREACH(nodes, i, node)
{
nodedata = node->layout_data;
if (!nodedata || !nodedata->min.h)
continue;
if ((ch > spos.y || nodedata->min.h + ch > spos.y) && (ch < (spos.y + vgmt.h) || nodedata->min.h + ch < spos.y + vgmt.h))
_node_realize(pd, node);
else
_node_unrealize(pd, node);
ch += nodedata->min.h;
}
eina_accessor_free(nodes);
}
static void
_calc_size_job(void *data)
{
Efl_Ui_List_Precise_Layouter_Data *pd;
Efl_Ui_List_SegArray_Node *node;
Efl_Ui_List_LayoutItem *layout_item;
Eo *obj = data;
Eina_Size2D min;
int i;
double start_time = ecore_time_get();
EINA_SAFETY_ON_NULL_RETURN(data);
pd = efl_data_scope_get(obj, MY_CLASS);
if (EINA_UNLIKELY(!pd)) return;
pd->recalc = EINA_FALSE;
Eina_Accessor *nodes = efl_ui_list_segarray_node_accessor_get(pd->segarray);
while (eina_accessor_data_get(nodes, pd->calc_progress, (void **)&node))
{
pd->calc_progress++;
if (!node->layout_data)
node->layout_data = calloc(1, sizeof(Efl_Ui_List_Precise_Layouter_Node_Data));
for (i = 0; i != node->length; ++i)
{
layout_item = (Efl_Ui_List_LayoutItem *)node->pointers[i];
EINA_SAFETY_ON_NULL_RETURN(layout_item);
// cache size of new items
if ((layout_item->min.w == 0) && (layout_item->min.h == 0))
{
if (!layout_item->layout)
{
efl_ui_list_model_realize(pd->modeler, layout_item);
}
min = efl_gfx_size_hint_combined_min_get(layout_item->layout);
if (min.w && min.h)
{
_item_min_calc(pd, layout_item, min, node);
efl_ui_list_model_unrealize(pd->modeler, layout_item);
}
else
{
Efl_Ui_List_Precise_Layouter_Callback_Data *cb_data = calloc(1, sizeof(Efl_Ui_List_Precise_Layouter_Callback_Data));
cb_data->pd = pd;
cb_data->item = layout_item;
evas_object_event_callback_add(layout_item->layout, EVAS_CALLBACK_CHANGED_SIZE_HINTS, _on_item_size_hint_change, cb_data);
}
}
}
if ( (ecore_time_get() - start_time ) > 0.01 )
{
ecore_job_del(pd->calc_job);
pd->calc_job = ecore_job_add(_calc_size_job, obj);
eina_accessor_free(nodes);
return;
}
}
eina_accessor_free(nodes);
pd->calc_progress = 0;
pd->calc_job = NULL;
evas_object_smart_changed(pd->modeler);
}
EOLIAN static Efl_Object *
_efl_ui_list_precise_layouter_efl_object_constructor(Eo *obj EINA_UNUSED, Efl_Ui_List_Precise_Layouter_Data *pd)
{
obj = efl_constructor(efl_super(obj, MY_CLASS));
pd->initialized = EINA_FALSE;
pd->count_future = NULL;
return obj;
}
EOLIAN static void
_efl_ui_list_precise_layouter_efl_ui_list_relayout_model_set(Eo *obj EINA_UNUSED, Efl_Ui_List_Precise_Layouter_Data *pd, Efl_Model *model)
{
if (pd->model == model)
return;
pd->count_total = 0;
if (pd->count_future)
{
efl_future_cancel(pd->count_future);
pd->count_future = NULL;
}
if (pd->model)
{
_finalize(obj, pd);
efl_unref(pd->model);
pd->model = NULL;
}
if (model)
{
pd->model = model;
efl_ref(pd->model);
pd->count_future = efl_model_children_count_get(pd->model);
efl_future_then(pd->count_future, &_count_then, &_count_error, NULL, pd);
}
}
static void
_efl_ui_list_relayout_layout_do(Efl_Ui_List_Precise_Layouter_Data *pd)
{
Eina_Rect vgmt;
Eina_Position2D spos;
double cur_pos = 0;
Efl_Ui_List_LayoutItem* layout_item;
Efl_Ui_List_SegArray_Node *items_node;
int i, j = 0;
_calc_range(pd);
int boxx, boxy, boxw, boxh, extra = 0, rounding = 0;
int boxl = 0, boxr = 0, boxt = 0, boxb = 0;
evas_object_geometry_get(pd->modeler, &boxx, &boxy, &boxw, &boxh);
efl_gfx_size_hint_margin_get(pd->modeler, &boxl, &boxr, &boxt, &boxb);
// box outer margin
boxw -= boxl + boxr;
boxh -= boxt + boxb;
boxx += boxl;
boxy += boxt;
//padding can not be squeezed (note: could make it an option)
// int pad;
// double scale;
// scale = evas_object_scale_get(pd->modeler);
// pad = 0;//pd->pad.scalable ? (pd->pad.v * scale) : pd->pad.v;
// length -= pad * (pd->count_total - 1);
// available space. if <0 we overflow
extra = boxh - pd->min.h;
if (extra < 0) extra = 0;
efl_ui_list_model_min_size_set(pd->modeler, pd->min);
vgmt = efl_ui_scrollable_viewport_geometry_get(pd->modeler);
spos = efl_ui_scrollable_content_pos_get(pd->modeler);
Eina_Accessor *nodes = efl_ui_list_segarray_node_accessor_get(pd->segarray);
EINA_ACCESSOR_FOREACH(nodes, i, items_node)
{
Efl_Ui_List_Precise_Layouter_Node_Data *nodedata = items_node->layout_data;
if (!nodedata)
{
continue;
}
if (nodedata->realized)
{
for(j = 0; j != items_node->length;++j)
{
layout_item = (Efl_Ui_List_LayoutItem *)items_node->pointers[j];
double x, y, w, h;
double weight_x, weight_y;
if (layout_item->min.w && layout_item->min.h)
{
assert(layout_item->layout != NULL);
if (pd->resize)
_item_size_calc(pd, layout_item);
efl_gfx_size_hint_weight_get(layout_item->layout, &weight_x, &weight_y);
// extra rounding up (compensate cumulative error)
if ((i == (pd->count_total - 1)) && (cur_pos - floor(cur_pos) >= 0.5))
rounding = 1;
x = layout_item->pos.x;
y = layout_item->pos.y + cur_pos;
w = layout_item->size.w;
h = layout_item->size.h + rounding + weight_y * extra;
cur_pos += h;
if (w < pd->min.w) w = pd->min.w;
if (w > vgmt.w) w = vgmt.w;
evas_object_geometry_set(layout_item->layout, (x + 0 - spos.x), (y + 0 - spos.y), w, h);
}
}
}
else
{
cur_pos += nodedata->min.h;
}
}
eina_accessor_free(nodes);
pd->resize = EINA_FALSE;
}
EOLIAN static void
_efl_ui_list_precise_layouter_efl_ui_list_relayout_layout_do
(Eo *obj EINA_UNUSED, Efl_Ui_List_Precise_Layouter_Data *pd
, Efl_Ui_List_Model *modeler, int first, Efl_Ui_List_SegArray *segarray)
{
_initilize(obj, pd, modeler, segarray);
pd->first = first;
if (pd->recalc)
{
// cache size of new items
pd->calc_progress = 0;
ecore_job_del(pd->calc_job);
pd->calc_job = ecore_job_add(_calc_size_job, obj);
return;
}
_efl_ui_list_relayout_layout_do(pd);
}
#include "efl_ui_list_precise_layouter.eo.c"
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