forked from enlightenment/efl
322 lines
11 KiB
C
322 lines
11 KiB
C
#ifdef HAVE_CONFIG_H
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#include "elementary_config.h"
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#endif
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#include <Efl_Ui.h>
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#include <Elementary.h>
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#include "elm_widget.h"
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#include "elm_priv.h"
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#define MY_CLASS EFL_UI_GRID_POSITION_MANAGER_CLASS
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#define MY_DATA_GET(obj, pd) \
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Efl_Ui_Grid_Position_Manager_Data *pd = efl_data_scope_get(obj, MY_CLASS);
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typedef struct {
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Eina_Accessor *content_acc, *size_acc;
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unsigned int size;
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Eina_Rect viewport;
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Eina_Vector2 scroll_position;
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Efl_Ui_Layout_Orientation dir;
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struct {
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unsigned int start_id, end_id;
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} prev_run;
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Eina_Size2D max_min_size;
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Eina_Size2D last_viewport_size;
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Eina_Size2D prev_min_size;
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struct {
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int columns;
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int rows;
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} current_display_table;
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} Efl_Ui_Grid_Position_Manager_Data;
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static inline void
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vis_change_segment(Efl_Ui_Grid_Position_Manager_Data *pd, int a, int b, Eina_Bool flag)
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{
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for (int i = MIN(a, b); i < MAX(a, b); ++i)
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{
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Efl_Gfx_Entity *ent;
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EINA_SAFETY_ON_FALSE_RETURN(eina_accessor_data_get(pd->content_acc, i, (void**) &ent));
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if (ent && !efl_ui_focus_object_focus_get(ent))
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{
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efl_gfx_entity_visible_set(ent, flag);
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}
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}
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}
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static void
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_reposition_content(Eo *obj EINA_UNUSED, Efl_Ui_Grid_Position_Manager_Data *pd)
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{
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Eina_Size2D space_size;
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int relevant_space_size, relevant_viewport;
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unsigned int start_id, end_id, step;
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if (!pd->size) return;
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if (pd->max_min_size.w <= 0 || pd->max_min_size.h <= 0) return;
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if (pd->current_display_table.columns <= 0 || pd->current_display_table.rows <= 0) return;
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//space size contains the amount of space that is outside the viewport (either to the top or to the left)
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space_size.w = (MAX(pd->last_viewport_size.w - pd->viewport.w, 0))*pd->scroll_position.x;
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space_size.h = (MAX(pd->last_viewport_size.h - pd->viewport.h, 0))*pd->scroll_position.y;
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if (pd->dir == EFL_UI_LAYOUT_ORIENTATION_VERTICAL)
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{
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relevant_space_size = space_size.h;
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relevant_viewport = pd->viewport.h;
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step = pd->max_min_size.h;
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}
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else
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{
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relevant_space_size = space_size.w;
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relevant_viewport = pd->viewport.w;
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step = pd->max_min_size.w;
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}
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start_id = MIN((MAX(relevant_space_size,0) / step)*pd->current_display_table.columns, pd->size);
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end_id = MIN((((MAX(relevant_space_size,0) + relevant_viewport + step) / step)*pd->current_display_table.columns)+1, pd->size);
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EINA_SAFETY_ON_FALSE_RETURN(start_id <= end_id);
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EINA_SAFETY_ON_FALSE_RETURN(start_id <= pd->size);
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//to performance optimize the whole widget, we are setting the objects that are outside the viewport to visibility false
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//The code below ensures that things outside the viewport are always hidden, and things inside the viewport are visible
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if (end_id < pd->prev_run.start_id || start_id > pd->prev_run.end_id)
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{
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//it is important to first make the segment visible here, and then hide the rest
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//otherwise we get a state where item_container has 0 subchildren, which triggers a lot of focus logic.
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vis_change_segment(pd, start_id, end_id, EINA_TRUE);
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vis_change_segment(pd, pd->prev_run.start_id, pd->prev_run.end_id, EINA_FALSE);
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}
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else
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{
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vis_change_segment(pd, pd->prev_run.start_id, start_id, (pd->prev_run.start_id > start_id));
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vis_change_segment(pd, pd->prev_run.end_id, end_id, (pd->prev_run.end_id < end_id));
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}
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for (unsigned int i = start_id; i < end_id; ++i)
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{
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Eina_Rect geom;
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Efl_Gfx_Entity *ent;
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geom.size = pd->max_min_size;
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geom.pos = pd->viewport.pos;
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if (pd->dir == EFL_UI_LAYOUT_ORIENTATION_VERTICAL)
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{
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geom.x += pd->max_min_size.w*(i%pd->current_display_table.columns);
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geom.y += pd->max_min_size.h*(i/pd->current_display_table.columns);
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geom.y -= (relevant_space_size);
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}
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else
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{
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geom.x += pd->max_min_size.w*(i/pd->current_display_table.columns);
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geom.y += pd->max_min_size.h*(i%pd->current_display_table.columns);
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geom.x -= (relevant_space_size);
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}
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EINA_SAFETY_ON_FALSE_RETURN(eina_accessor_data_get(pd->content_acc, i, (void**) &ent));
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//printf(">%d (%d, %d, %d, %d) %p\n", i, geom.x, geom.y, geom.w, geom.h, ent);
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efl_gfx_entity_geometry_set(ent, geom);
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}
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pd->prev_run.start_id = start_id;
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pd->prev_run.end_id = end_id;
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}
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static inline void
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_flush_abs_size(Eo *obj, Efl_Ui_Grid_Position_Manager_Data *pd)
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{
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int minor, major;
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Eina_Size2D vp_size;
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if (!pd->size) return;
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if (pd->max_min_size.w <= 0 || pd->max_min_size.h <= 0) return;
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if (pd->dir == EFL_UI_LAYOUT_ORIENTATION_VERTICAL)
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{
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major = pd->viewport.w/pd->max_min_size.w;
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pd->current_display_table.columns = major;
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}
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else
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{
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major = pd->viewport.h/pd->max_min_size.h;
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pd->current_display_table.columns = major;
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}
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if (major <= 0) return;
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minor = ceil((double)pd->size/(double)major);
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if (pd->dir == EFL_UI_LAYOUT_ORIENTATION_VERTICAL)
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pd->current_display_table.rows = minor;
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else
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pd->current_display_table.rows = minor;
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/*
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* calculate how much size we need with major in the given orientation.
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* The
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*/
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if (pd->dir == EFL_UI_LAYOUT_ORIENTATION_VERTICAL)
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{
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vp_size.w = pd->viewport.w;
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vp_size.h = minor*pd->max_min_size.h;
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}
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else
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{
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vp_size.h = pd->viewport.h;
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vp_size.w = minor*pd->max_min_size.w;
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}
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if (vp_size.h != pd->last_viewport_size.h || vp_size.w != pd->last_viewport_size.w)
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{
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pd->last_viewport_size = vp_size;
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efl_event_callback_call(obj, EFL_UI_ITEM_POSITION_MANAGER_EVENT_CONTENT_SIZE_CHANGED, &vp_size);
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}
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}
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static inline void
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_update_min_size(Eo *obj EINA_UNUSED, Efl_Ui_Grid_Position_Manager_Data *pd, int added_index)
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{
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Eina_Size2D elemsize;
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EINA_SAFETY_ON_FALSE_RETURN(eina_accessor_data_get(pd->size_acc, added_index, (void*)&elemsize));
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pd->max_min_size.w = MAX(pd->max_min_size.w, elemsize.w);
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pd->max_min_size.h = MAX(pd->max_min_size.h, elemsize.h);
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}
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static inline void
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_flush_min_size(Eo *obj, Efl_Ui_Grid_Position_Manager_Data *pd)
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{
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Eina_Size2D min_size = pd->max_min_size;
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if (pd->dir == EFL_UI_LAYOUT_ORIENTATION_VERTICAL)
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min_size.h = -1;
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else
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min_size.w = -1;
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if (pd->prev_min_size.w != min_size.w || pd->prev_min_size.h != min_size.h)
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{
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pd->prev_min_size = min_size;
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efl_event_callback_call(obj, EFL_UI_ITEM_POSITION_MANAGER_EVENT_CONTENT_MIN_SIZE_CHANGED, &min_size);
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}
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}
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EOLIAN static void
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_efl_ui_grid_position_manager_efl_ui_item_position_manager_data_access_set(Eo *obj EINA_UNUSED, Efl_Ui_Grid_Position_Manager_Data *pd, Eina_Accessor *obj_access, Eina_Accessor *size_access, int size)
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{
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pd->size_acc = size_access;
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pd->content_acc = obj_access;
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pd->size = size;
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}
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EOLIAN static void
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_efl_ui_grid_position_manager_efl_ui_item_position_manager_viewport_set(Eo *obj EINA_UNUSED, Efl_Ui_Grid_Position_Manager_Data *pd, Eina_Rect viewport)
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{
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pd->viewport = viewport;
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_flush_abs_size(obj, pd);
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_reposition_content(obj, pd);
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}
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EOLIAN static void
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_efl_ui_grid_position_manager_efl_ui_item_position_manager_scroll_position_set(Eo *obj EINA_UNUSED, Efl_Ui_Grid_Position_Manager_Data *pd, double x, double y)
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{
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pd->scroll_position.x = x;
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pd->scroll_position.y = y;
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_reposition_content(obj, pd);
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}
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EOLIAN static void
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_efl_ui_grid_position_manager_efl_ui_item_position_manager_item_added(Eo *obj, Efl_Ui_Grid_Position_Manager_Data *pd, int added_index, Efl_Gfx_Entity *subobj EINA_UNUSED)
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{
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pd->size ++;
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efl_gfx_entity_visible_set(subobj, EINA_FALSE);
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_update_min_size(obj, pd, added_index);
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_flush_min_size(obj, pd);
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_flush_abs_size(obj, pd);
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_reposition_content(obj, pd); //FIXME we might can skip that
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}
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EOLIAN static void
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_efl_ui_grid_position_manager_efl_ui_item_position_manager_item_removed(Eo *obj EINA_UNUSED, Efl_Ui_Grid_Position_Manager_Data *pd, int removed_index EINA_UNUSED, Efl_Gfx_Entity *subobj EINA_UNUSED)
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{
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EINA_SAFETY_ON_FALSE_RETURN(pd->size > 0);
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pd->size --;
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pd->prev_run.start_id = MIN(pd->prev_run.start_id, pd->size);
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pd->prev_run.end_id = MIN(pd->prev_run.end_id, pd->size);
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//we ignore here that we might loose the item giving the current max min size
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_flush_abs_size(obj, pd);
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_reposition_content(obj, pd); //FIXME we might can skip that
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efl_gfx_entity_visible_set(subobj, EINA_TRUE);
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}
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EOLIAN static void
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_efl_ui_grid_position_manager_efl_ui_item_position_manager_item_size_changed(Eo *obj, Efl_Ui_Grid_Position_Manager_Data *pd, int start_id, int end_id)
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{
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for (int i = start_id; i <= end_id; ++i)
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{
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_update_min_size(obj, pd, i);
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}
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_flush_min_size(obj, pd);
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_flush_abs_size(obj, pd);
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_reposition_content(obj, pd); //FIXME we could check if this is needed or not
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}
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EOLIAN static void
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_efl_ui_grid_position_manager_efl_ui_layout_orientable_orientation_set(Eo *obj EINA_UNUSED, Efl_Ui_Grid_Position_Manager_Data *pd, Efl_Ui_Layout_Orientation dir)
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{
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pd->dir = dir;
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_flush_min_size(obj, pd);
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_flush_abs_size(obj, pd);
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_reposition_content(obj, pd); //FIXME we could check if this is needed or not
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}
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EOLIAN static Efl_Ui_Layout_Orientation
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_efl_ui_grid_position_manager_efl_ui_layout_orientable_orientation_get(const Eo *obj EINA_UNUSED, Efl_Ui_Grid_Position_Manager_Data *pd)
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{
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return pd->dir;
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}
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EOLIAN static Eina_Rect
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_efl_ui_grid_position_manager_efl_ui_item_position_manager_position_single_item(Eo *obj EINA_UNUSED, Efl_Ui_Grid_Position_Manager_Data *pd, int idx)
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{
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Eina_Rect geom;
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Eina_Size2D space_size;
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unsigned int relevant_space_size;
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if (!pd->size) return EINA_RECT(0, 0, 0, 0);
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if (pd->max_min_size.w <= 0 || pd->max_min_size.h <= 0) return EINA_RECT(0, 0, 0, 0);
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if (pd->current_display_table.columns <= 0 || pd->current_display_table.rows <= 0) return EINA_RECT(0, 0, 0, 0);
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//space size contains the amount of space that is outside the viewport (either to the top or to the left)
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space_size.w = (MAX(pd->last_viewport_size.w - pd->viewport.w, 0))*pd->scroll_position.x;
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space_size.h = (MAX(pd->last_viewport_size.h - pd->viewport.h, 0))*pd->scroll_position.y;
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EINA_SAFETY_ON_FALSE_RETURN_VAL(space_size.w >= 0 && space_size.h >= 0, EINA_RECT(0, 0, 0, 0));
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if (pd->dir == EFL_UI_LAYOUT_ORIENTATION_VERTICAL)
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{
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relevant_space_size = space_size.h;
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}
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else
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{
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relevant_space_size = space_size.w;
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}
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geom.size = pd->max_min_size;
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geom.pos = pd->viewport.pos;
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if (pd->dir == EFL_UI_LAYOUT_ORIENTATION_VERTICAL)
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{
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geom.x += pd->max_min_size.w*(idx%pd->current_display_table.columns);
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geom.y += pd->max_min_size.h*(idx/pd->current_display_table.columns);
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geom.y -= (relevant_space_size);
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}
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else
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{
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geom.x += pd->max_min_size.w*(idx/pd->current_display_table.columns);
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geom.y += pd->max_min_size.h*(idx%pd->current_display_table.columns);
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geom.x -= (relevant_space_size);
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}
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return geom;
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}
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#include "efl_ui_grid_position_manager.eo.c"
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