514 lines
17 KiB
C
514 lines
17 KiB
C
#ifdef HAVE_CONFIG_H
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# include "elementary_config.h"
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#endif
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#include <Elementary.h>
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#include "elm_priv.h"
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#include "els_box.h"
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/* calculate an object's aspected size */
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static Eina_Bool
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_box_object_aspect_calc(int *ow, int *oh, int minw, int minh, int maxw, int maxh,
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int fw /* fill width */, int fh /* fill height */,
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int ww /* "maximum" width */, int hh /* "maximum" height */,
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Evas_Aspect_Control aspect, double ratio)
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{
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*ow = minw;
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*oh = minh;
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switch (aspect)
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{
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case EVAS_ASPECT_CONTROL_HORIZONTAL:
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/* set height using aspect+width */
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if (fw) *ow = ww;
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if ((maxw >= 0) && (maxw < *ow)) *ow = maxw;
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*oh = (1 / ratio) * *ow;
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/* apply min/max */
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if ((maxh >= 0) && (maxh < *oh)) *oh = maxh;
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else if ((minh >= 0) && (minh > *oh)) *oh = minh;
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else return EINA_TRUE;
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return EINA_FALSE;
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case EVAS_ASPECT_CONTROL_VERTICAL:
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/* set width using aspect+height */
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if (fh) *oh = hh;
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if ((maxh >= 0) && (maxh < *oh)) *oh = maxh;
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*ow = ratio * *oh;
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/* apply min/max */
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if ((maxw >= 0) && (maxw < *ow)) *ow = maxw;
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else if ((minw >= 0) && (minw > *ow)) *ow = minw;
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else return EINA_TRUE;
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return EINA_FALSE;
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case EVAS_ASPECT_CONTROL_BOTH:
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/* try width then height */
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/* set width using aspect+height */
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if (fh) *oh = hh;
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if ((maxh >= 0) && (maxh < *oh)) *oh = maxh;
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*ow = ratio * *oh;
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/* apply min/max */
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if ((maxw >= 0) && (maxw < *ow)) *ow = maxw;
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else if ((minw >= 0) && (minw > *ow)) *ow = minw;
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else return EINA_TRUE;
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/* set height using aspect+width */
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if (fw) *ow = ww;
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if ((maxw >= 0) && (maxw < *ow)) *ow = maxw;
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*oh = (1 / ratio) * *ow;
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/* apply min/max */
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if ((maxh >= 0) && (maxh < *oh)) *oh = maxh;
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else if ((minh >= 0) && (minh > *oh)) *oh = minh;
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else return EINA_TRUE;
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/* fallthrough on BOTH failure */
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default: break;
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}
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/* on failure or ASPECT_NONE, use default size calc:
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* - apply fill
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* - apply max size constraints
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*/
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if (fw) *ow = ww;
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if ((maxw >= 0) && (maxw < *ow)) *ow = maxw;
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if (fh) *oh = hh;
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if ((maxh >= 0) && (maxh < *oh)) *oh = maxh;
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return EINA_FALSE;
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}
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/* add box w/h padding to min/max totals */
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static void
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_smart_extents_padding_calc(Evas_Object_Box_Data *priv, int *minw, int *minh, int *maxw, int *maxh, Eina_Bool horizontal)
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{
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int c;
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if ((*maxw >= 0) && (*minw > *maxw)) *maxw = *minw;
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if ((*maxh >= 0) && (*minh > *maxh)) *maxh = *minh;
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c = eina_list_count(priv->children) - 1;
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if (c > 0)
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{
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if (horizontal)
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{
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*minw += priv->pad.h * c;
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if (*maxw != -1) *maxw += priv->pad.h * c;
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}
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else
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{
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*minh += priv->pad.v * c;
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if (*maxh != -1) *maxh += priv->pad.v * c;
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}
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}
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}
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/* calculate extents for non-homogeneous layout;
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* called twice if aspected items exist
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*/
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static Eina_Bool
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_smart_extents_non_homogeneous_calc(Evas_Object_Box_Data *priv, int w, int h, int *minw, int *minh, int *maxw, int *maxh, double expand, Eina_Bool horizontal, Eina_Bool do_aspect)
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{
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const Eina_List *l;
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Evas_Object_Box_Option *opt;
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int mnw, mnh, mxw, mxh, cminw, cminh;
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Evas_Coord pad_l, pad_r, pad_t, pad_b;
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Evas_Coord *rw, *rh, *rxw, *rxh, *rminw, *rminh, *rmaxw, *rmaxh;
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Eina_Bool max = EINA_TRUE, asp = EINA_FALSE;
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cminw = *minw, cminh = *minh;
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*minw = *minh = 0;
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*maxw = *maxh = -1;
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/* use pointers to values to simplify horizontal vs vertical calculations into
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* a single algorithm for both orientations
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*/
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if (!horizontal)
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{
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rw = &mnw;
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rh = &mnh;
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rxw = &mxw;
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rxh = &mxh;
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rminw = minw;
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rminh = minh;
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rmaxw = maxw;
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rmaxh = maxh;
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}
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else
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{
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rw = &mnh;
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rh = &mnw;
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rxw = &mxh;
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rxh = &mxw;
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rminw = minh;
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rminh = minw;
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rmaxw = maxh;
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rmaxh = maxw;
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}
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EINA_LIST_FOREACH(priv->children, l, opt)
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{
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Evas_Aspect_Control aspect = EVAS_ASPECT_CONTROL_NONE;
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int asx, asy, ow = 0, oh = 0, *rrw, *rrh;
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if (!horizontal)
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rrw = &ow, rrh = &oh;
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else
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rrw = &oh, rrh = &ow;
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evas_object_size_hint_padding_get(opt->obj, &pad_l, &pad_r, &pad_t, &pad_b);
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evas_object_size_hint_combined_min_get(opt->obj, &mnw, &mnh);
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mnw += pad_l + pad_r;
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mnh += pad_t + pad_b;
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if (*rminw < *rw) *rminw = *rw;
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*rminh += *rh;
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evas_object_size_hint_aspect_get(opt->obj, &aspect, &asx, &asy);
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if (aspect && ((!EINA_DBL_NONZERO(asx)) || (asx < 0.0) ||
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(!EINA_DBL_NONZERO(asy)) || (asy < 0.0)))
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{
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aspect = EVAS_ASPECT_CONTROL_NONE;
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ERR("Invalid aspect specified!");
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}
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/* return whether any aspected items exist */
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asp |= !!aspect;
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evas_object_size_hint_max_get(opt->obj, &mxw, &mxh);
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if (mxw >= 0) mxw += pad_l + pad_r;
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if (mxh >= 0) mxh += pad_t + pad_b;
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if (*rxh < 0)
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{
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*rmaxh = -1;
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max = EINA_FALSE;
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}
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if (max) *rmaxh += *rxh;
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if (do_aspect && aspect)
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{
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int ww, hh, fw = 0, fh = 0;
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double wx, wy, ax, ay;
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evas_object_size_hint_weight_get(opt->obj, &wx, &wy);
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if (horizontal)
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{
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/* use min size to start */
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ww = mnw;
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if ((expand > 0) && (wx > 0.0))
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{
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/* add remaining container value after applying weight hint */
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ow = ((w - cminw) * wx) / expand;
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ww += ow;
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}
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hh = h;
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}
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else
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{
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hh = mnh;
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if ((expand > 0) && (wy > 0.0))
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{
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oh = ((h - cminh) * wy) / expand;
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hh += oh;
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}
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ww = w;
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}
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evas_object_size_hint_align_get(opt->obj, &ax, &ay);
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if (ax < 0) fw = 1;
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if (ay < 0) fh = 1;
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/* if aspecting succeeds, use aspected size for min size */
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if (_box_object_aspect_calc(&ow, &oh, mnw, mnh, mxw, mxh,
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fw, fh, ww, hh, aspect, asx / (double)asy))
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{
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*rminh += (*rrh - *rh);
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if (*rminw < *rrw) *rminw = *rrw;
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}
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}
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if (*rxw >= 0)
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{
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if (*rmaxw == -1) *rmaxw = *rxw;
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else if (*rmaxw > *rxw) *rmaxw = *rxw;
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}
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}
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return asp;
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}
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static void
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_smart_extents_calculate(Evas_Object *box, Evas_Object_Box_Data *priv, int w, int h, double expand, Eina_Bool horizontal, Eina_Bool homogeneous)
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{
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Evas_Coord minw, minh, child_mxw, child_mxh, maxw, maxh;
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Evas_Coord pad_l, pad_r, pad_t, pad_b;
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const Eina_List *l;
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Evas_Object_Box_Option *opt;
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int c;
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minw = 0;
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minh = 0;
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maxw = -1;
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maxh = -1;
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c = eina_list_count(priv->children);
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if (homogeneous || (c == 1))
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{
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Evas_Aspect_Control paspect = -1; //causes overflow
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int pasx = -1, pasy = -1;
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EINA_LIST_FOREACH(priv->children, l, opt)
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{
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Evas_Aspect_Control aspect = EVAS_ASPECT_CONTROL_NONE;
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int asx, asy, ow = 0, oh = 0, fw = 0, fh = 0, ww, hh;
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double ax, ay;
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evas_object_size_hint_align_get(opt->obj, &ax, &ay);
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if (ax < 0) fw = 1;
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if (ay < 0) fh = 1;
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evas_object_size_hint_padding_get(opt->obj, &pad_l, &pad_r, &pad_t, &pad_b);
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evas_object_size_hint_combined_min_get(opt->obj, &child_mxw, &child_mxh);
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child_mxw += pad_l + pad_r;
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child_mxh += pad_t + pad_b;
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if (minh < child_mxh) minh = child_mxh;
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if (minw < child_mxw) minw = child_mxw;
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evas_object_size_hint_aspect_get(opt->obj, &aspect, &asx, &asy);
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if (aspect && ((asx < 1) || (asy < 1)))
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{
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aspect = EVAS_ASPECT_CONTROL_NONE;
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ERR("Invalid aspect specified!");
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}
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if ((unsigned) paspect < 100) //value starts overflowed as UINT_MAX
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{
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/* this condition can cause some items to not be the same size,
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* resulting in a non-homogeneous homogeneous layout
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*/
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if ((aspect != paspect) || (asx != pasx) || (asy != pasy))
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ERR("Homogeneous box with differently-aspected items!");
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}
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evas_object_size_hint_max_get(opt->obj, &child_mxw, &child_mxh);
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if (child_mxh >= 0)
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{
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child_mxh += pad_t + pad_b;
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if (maxh == -1) maxh = child_mxh;
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else if (maxh > child_mxh) maxh = child_mxh;
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}
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if (child_mxw >= 0)
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{
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child_mxw += pad_l + pad_r;
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if (maxw == -1) maxw = child_mxw;
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else if (maxw > child_mxw) maxw = child_mxw;
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}
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if (aspect)
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{
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if (horizontal)
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{
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ww = ((w - (c - 1) * priv->pad.h) / c);
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hh = h;
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}
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else
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{
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hh = ((h - (c - 1) * priv->pad.v) / c);
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ww = w;
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}
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if (_box_object_aspect_calc(&ow, &oh, child_mxw, child_mxh, maxw, maxh,
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fw, fh, ww, hh, aspect, asx / (double)asy))
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{
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if ((oh > child_mxh) && (minh < oh)) minh = oh;
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if ((ow > child_mxw) && (minw < ow)) minw = ow;
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}
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}
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paspect = aspect;
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pasx = asx, pasy = asy;
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}
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if (horizontal)
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{
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minw *= c;
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if (maxw != -1)
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maxw *= c;
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else maxw = -1;
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}
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else
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{
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minh *= c;
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if (maxh != -1)
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maxh *= c;
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else maxh = -1;
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}
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}
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else
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{
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/* returns true if at least one item has aspect hint */
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if (_smart_extents_non_homogeneous_calc(priv, w, h, &minw, &minh,
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&maxw, &maxh, expand,
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horizontal, EINA_FALSE))
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{
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/* aspect can only be accurately calculated after the full (non-aspected) min size of the box has
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* been calculated due to the use of this min size during aspect calculations
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*/
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int aminw = minw;
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int aminh = minh;
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_smart_extents_padding_calc(priv, &minw, &minh, &maxw, &maxh,
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horizontal);
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_smart_extents_non_homogeneous_calc(priv, w, h, &aminw, &aminh,
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&maxw, &maxh, expand,
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horizontal, EINA_TRUE);
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if (horizontal) minw = aminw;
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else minh = aminh;
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}
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}
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_smart_extents_padding_calc(priv, &minw, &minh, &maxw, &maxh, horizontal);
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evas_object_size_hint_min_set(box, minw, minh);
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evas_object_size_hint_max_set(box, maxw, maxh);
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}
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void
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_els_box_layout(Evas_Object *o, Evas_Object_Box_Data *priv, Eina_Bool horizontal, Eina_Bool homogeneous, Eina_Bool rtl)
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{
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Evas_Coord x, y, w, h, xx, yy;
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const Eina_List *l;
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Evas_Object *obj;
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Evas_Coord minw, minh;
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int count = 0;
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double expand = 0.0;
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double ax, ay;
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double wx, wy;
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double *rwy;
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Evas_Object_Box_Option *opt;
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evas_object_geometry_get(o, &x, &y, &w, &h);
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/* accummulate expand after switched x and y for horizontal mode */
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if (!horizontal)
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rwy = &wy;
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else
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rwy = &wx;
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EINA_LIST_FOREACH(priv->children, l, opt)
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{
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evas_object_size_hint_weight_get(opt->obj, &wx, &wy);
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if (*rwy > 0.0) expand += *rwy;
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}
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_smart_extents_calculate(o, priv, w, h, expand, horizontal, homogeneous);
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evas_object_geometry_get(o, &x, &y, &w, &h);
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evas_object_size_hint_combined_min_get(o, &minw, &minh);
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evas_object_box_align_get(o, &ax, &ay);
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/* if object size is less than min, apply align to trigger viewporting */
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if (w < minw)
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{
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x = x + ((w - minw) * (1.0 - ax));
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w = minw;
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}
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if (h < minh)
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{
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y = y + ((h - minh) * (1.0 - ay));
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h = minh;
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}
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count = eina_list_count(priv->children);
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if (EINA_DBL_EQ(expand, 0))
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{
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if (rtl) ax = 1.0 - ax;
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if (horizontal)
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{
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x += (double)(w - minw) * ax;
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w = minw;
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}
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else
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{
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y += (double)(h - minh) * ay;
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h = minh;
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}
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}
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xx = x;
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yy = y;
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EINA_LIST_FOREACH(priv->children, l, opt)
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{
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Evas_Coord mnw, mnh, mxw, mxh;
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Evas_Coord pad_l, pad_r, pad_t, pad_b;
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int fw, fh, xw, xh;//fillw, fillw, expandw, expandh
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Evas_Aspect_Control aspect = EVAS_ASPECT_CONTROL_NONE;
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int asx, asy;
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obj = opt->obj;
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evas_object_size_hint_align_get(obj, &ax, &ay);
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evas_object_size_hint_weight_get(obj, &wx, &wy);
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evas_object_size_hint_padding_get(obj, &pad_l, &pad_r, &pad_t, &pad_b);
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evas_object_size_hint_combined_min_get(obj, &mnw, &mnh);
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mnw += pad_l + pad_r;
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mnh += pad_t + pad_b;
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evas_object_size_hint_max_get(obj, &mxw, &mxh);
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if (mxw >= 0) mxw += pad_l + pad_r;
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if (mxh >= 0) mxh += pad_t + pad_b;
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evas_object_size_hint_aspect_get(obj, &aspect, &asx, &asy);
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if (aspect && ((asx < 1) || (asy < 1)))
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aspect = EVAS_ASPECT_CONTROL_NONE;
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fw = fh = 0;
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xw = xh = 0;
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/* align(-1) means fill to maximum apportioned size */
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if (EINA_DBL_EQ(ax, -1.0)) {fw = 1; ax = 0.5;}
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if (EINA_DBL_EQ(ay, -1.0)) {fh = 1; ay = 0.5;}
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if (rtl) ax = 1.0 - ax;
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if (wx > 0.0) xw = 1;
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if (wy > 0.0) xh = 1;
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if (horizontal)
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{
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Evas_Coord ww, hh, ow = 0, oh = 0;
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if (homogeneous)
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{
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ww = ((w - (count - 1) * priv->pad.h) / (Evas_Coord)count);
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}
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else
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{
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ww = mnw;
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if ((expand > 0) && (xw))
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{
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ow = ((w - minw) * wx) / expand;
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ww += ow;
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}
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}
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hh = h;
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_box_object_aspect_calc(&ow, &oh, mnw, mnh, mxw, mxh, fw, fh,
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ww, hh, aspect, asx / (double)asy);
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/* non-homogeneous, aspected, expending items are calculated
|
|
* based on object size during extents calc, so use this for
|
|
* positioning during layout as well
|
|
*/
|
|
if (aspect && (!homogeneous))
|
|
ww = ow;
|
|
evas_object_move(obj,
|
|
((!rtl) ? (xx + pad_l) : (x + (w - (xx - x) - ww) + pad_r))
|
|
+ (Evas_Coord)(((double)(ww - ow)) * ax),
|
|
yy + (Evas_Coord)(((double)(hh - oh)) * ay) + pad_t);
|
|
ow -= pad_l + pad_r;
|
|
oh -= pad_t + pad_b;
|
|
evas_object_resize(obj, ow, oh);
|
|
xx += ww;
|
|
xx += priv->pad.h;
|
|
}
|
|
else
|
|
{
|
|
Evas_Coord ww, hh, ow = 0, oh = 0;
|
|
|
|
if (homogeneous)
|
|
{
|
|
hh = ((h - (count - 1) * priv->pad.v) / (Evas_Coord)count);
|
|
}
|
|
else
|
|
{
|
|
hh = mnh;
|
|
if ((expand > 0) && (xh))
|
|
{
|
|
oh = ((h - minh) * wy) / expand;
|
|
hh += oh;
|
|
}
|
|
}
|
|
ww = w;
|
|
|
|
_box_object_aspect_calc(&ow, &oh, mnw, mnh, mxw, mxh, fw, fh,
|
|
ww, hh, aspect, asx / (double)asy);
|
|
if (aspect && (!homogeneous))
|
|
hh = oh;
|
|
evas_object_move(obj,
|
|
xx + (Evas_Coord)(((double)(ww - ow)) * ax) + pad_l,
|
|
yy + (Evas_Coord)(((double)(hh - oh)) * ay) + pad_t);
|
|
ow -= pad_l + pad_r;
|
|
oh -= pad_t + pad_b;
|
|
evas_object_resize(obj, ow, oh);
|
|
yy += hh;
|
|
yy += priv->pad.v;
|
|
}
|
|
}
|
|
}
|