399 lines
8.9 KiB
C
399 lines
8.9 KiB
C
// 7 april 2015
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#include "uipriv.h"
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// TODO
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// - rename to uiBox
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typedef struct stack stack;
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typedef struct stackControl stackControl;
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struct stack {
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uiStack s;
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stackControl *controls;
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uintmax_t len;
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uintmax_t cap;
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int vertical;
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uiParent *parent;
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int padded;
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int userHid;
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int containerHid;
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int userDisabled;
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int containerDisabled;
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};
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struct stackControl {
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uiControl *c;
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int stretchy;
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intmax_t width; // both used by resize(); preallocated to save time and reduce risk of failure
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intmax_t height;
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};
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static void stackDestroy(uiControl *c)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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for (i = 0; i < s->len; i++)
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uiControlDestroy(s->controls[i].c);
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uiFree(s->controls);
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uiFree(s);
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}
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static uintptr_t stackHandle(uiControl *c)
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{
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return 0;
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}
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static void stackSetParent(uiControl *c, uiParent *parent)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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uiParent *oldparent;
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oldparent = s->parent;
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s->parent = parent;
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for (i = 0; i < s->len; i++)
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uiControlSetParent(s->controls[i].c, s->parent);
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if (oldparent != NULL)
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uiParentUpdate(oldparent);
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if (s->parent != NULL)
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uiParentUpdate(s->parent);
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}
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static void stackPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
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{
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stack *s = (stack *) c;
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int xpadding, ypadding;
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uintmax_t nStretchy;
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// these two contain the largest preferred width and height of all stretchy controls in the stack
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// all stretchy controls will use this value to determine the final preferred size
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intmax_t maxStretchyWidth, maxStretchyHeight;
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uintmax_t i;
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intmax_t preferredWidth, preferredHeight;
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*width = 0;
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*height = 0;
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if (s->len == 0)
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return;
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// 0) get this Stack's padding
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xpadding = 0;
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ypadding = 0;
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if (s->padded) {
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xpadding = d->xPadding;
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ypadding = d->yPadding;
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}
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// 1) initialize the desired rect with the needed padding
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if (s->vertical)
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*height = (s->len - 1) * ypadding;
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else
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*width = (s->len - 1) * xpadding;
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// 2) add in the size of non-stretchy controls and get (but not add in) the largest widths and heights of stretchy controls
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// we still add in like direction of stretchy controls
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nStretchy = 0;
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maxStretchyWidth = 0;
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maxStretchyHeight = 0;
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for (i = 0; i < s->len; i++) {
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if (!uiControlVisible(s->controls[i].c))
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continue;
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uiControlPreferredSize(s->controls[i].c, d, &preferredWidth, &preferredHeight);
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if (s->controls[i].stretchy) {
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nStretchy++;
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if (maxStretchyWidth < preferredWidth)
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maxStretchyWidth = preferredWidth;
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if (maxStretchyHeight < preferredHeight)
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maxStretchyHeight = preferredHeight;
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}
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if (s->vertical) {
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if (*width < preferredWidth)
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*width = preferredWidth;
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if (!s->controls[i].stretchy)
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*height += preferredHeight;
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} else {
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if (!s->controls[i].stretchy)
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*width += preferredWidth;
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if (*height < preferredHeight)
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*height = preferredHeight;
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}
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}
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// 3) and now we can add in stretchy controls
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if (s->vertical)
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*height += nStretchy * maxStretchyHeight;
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else
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*width += nStretchy * maxStretchyWidth;
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}
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static void stackResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
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{
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stack *s = (stack *) c;
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int xpadding, ypadding;
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uintmax_t nStretchy;
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intmax_t stretchywid, stretchyht;
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uintmax_t i;
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intmax_t preferredWidth, preferredHeight;
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if (s->len == 0)
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return;
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// -1) get this Stack's padding
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xpadding = 0;
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ypadding = 0;
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if (s->padded) {
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xpadding = d->xPadding;
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ypadding = d->yPadding;
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}
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// 0) inset the available rect by the needed padding
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if (s->vertical)
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height -= (s->len - 1) * ypadding;
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else
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width -= (s->len - 1) * xpadding;
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// 1) get width and height of non-stretchy controls
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// this will tell us how much space will be left for stretchy controls
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stretchywid = width;
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stretchyht = height;
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nStretchy = 0;
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for (i = 0; i < s->len; i++) {
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if (!uiControlVisible(s->controls[i].c))
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continue;
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if (s->controls[i].stretchy) {
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nStretchy++;
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continue;
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}
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uiControlPreferredSize(s->controls[i].c, d, &preferredWidth, &preferredHeight);
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if (s->vertical) { // all controls have same width
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s->controls[i].width = width;
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s->controls[i].height = preferredHeight;
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stretchyht -= preferredHeight;
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} else { // all controls have same height
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s->controls[i].width = preferredWidth;
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s->controls[i].height = height;
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stretchywid -= preferredWidth;
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}
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}
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// 2) now get the size of stretchy controls
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if (nStretchy != 0)
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if (s->vertical)
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stretchyht /= nStretchy;
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else
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stretchywid /= nStretchy;
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for (i = 0; i < s->len; i++) {
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if (!uiControlVisible(s->controls[i].c))
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continue;
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if (s->controls[i].stretchy) {
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s->controls[i].width = stretchywid;
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s->controls[i].height = stretchyht;
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}
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}
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// 3) now we can position controls
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for (i = 0; i < s->len; i++) {
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if (!uiControlVisible(s->controls[i].c))
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continue;
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uiControlResize(s->controls[i].c, x, y, s->controls[i].width, s->controls[i].height, d);
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if (s->vertical)
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y += s->controls[i].height + ypadding;
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else
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x += s->controls[i].width + xpadding;
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}
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}
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static int stackVisible(uiControl *c)
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{
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stack *s = (stack *) c;
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return !(s->userHid);
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}
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static void stackShow(uiControl *c)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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s->userHid = 0;
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if (!s->containerHid) {
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for (i = 0; i < s->len; i++)
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uiControlContainerShow(s->controls[i].c);
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if (s->parent != NULL)
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uiParentUpdate(s->parent);
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}
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}
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static void stackHide(uiControl *c)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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s->userHid = 1;
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for (i = 0; i < s->len; i++)
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uiControlContainerHide(s->controls[i].c);
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if (s->parent != NULL)
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uiParentUpdate(s->parent);
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}
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static void stackContainerShow(uiControl *c)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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s->containerHid = 0;
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if (!s->userHid) {
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for (i = 0; i < s->len; i++)
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uiControlContainerShow(s->controls[i].c);
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if (s->parent != NULL)
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uiParentUpdate(s->parent);
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}
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}
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static void stackContainerHide(uiControl *c)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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s->containerHid = 1;
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for (i = 0; i < s->len; i++)
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uiControlContainerHide(s->controls[i].c);
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if (s->parent != NULL)
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uiParentUpdate(s->parent);
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}
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static void stackEnable(uiControl *c)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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s->userDisabled = 0;
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if (!s->containerDisabled)
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for (i = 0; i < s->len; i++)
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uiControlContainerEnable(s->controls[i].c);
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}
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static void stackDisable(uiControl *c)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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s->userDisabled = 1;
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for (i = 0; i < s->len; i++)
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uiControlContainerDisable(s->controls[i].c);
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}
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static void stackContainerEnable(uiControl *c)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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s->containerDisabled = 0;
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if (!s->userDisabled)
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for (i = 0; i < s->len; i++)
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uiControlContainerEnable(s->controls[i].c);
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}
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static void stackContainerDisable(uiControl *c)
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{
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stack *s = (stack *) c;
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uintmax_t i;
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s->containerDisabled = 1;
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for (i = 0; i < s->len; i++)
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uiControlContainerDisable(s->controls[i].c);
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}
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#define stackCapGrow 32
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static void stackAppend(uiStack *ss, uiControl *c, int stretchy)
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{
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stack *s = (stack *) ss;
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if (s->len >= s->cap) {
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s->cap += stackCapGrow;
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s->controls = (stackControl *) uiRealloc(s->controls, s->cap * sizeof (stackControl), "stackControl[]");
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}
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s->controls[s->len].c = c;
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s->controls[s->len].stretchy = stretchy;
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s->len++; // must be here for parent updates to work
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if (s->parent != NULL) {
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uiControlSetParent(s->controls[s->len - 1].c, s->parent);
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uiParentUpdate(s->parent);
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}
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}
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static void stackDelete(uiStack *ss, uintmax_t index)
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{
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stack *s = (stack *) ss;
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uiControl *removed;
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uintmax_t i;
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removed = s->controls[index].c;
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// TODO switch to memmove?
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for (i = index; i < s->len - 1; i++)
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s->controls[i] = s->controls[i + 1];
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// TODO memset the last one to NULL
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s->len--;
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if (s->parent != NULL) {
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uiControlSetParent(removed, NULL);
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uiParentUpdate(s->parent);
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}
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}
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static int stackPadded(uiStack *ss)
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{
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stack *s = (stack *) ss;
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return s->padded;
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}
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static void stackSetPadded(uiStack *ss, int padded)
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{
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stack *s = (stack *) ss;
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s->padded = padded;
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if (s->parent != NULL)
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uiParentUpdate(s->parent);
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}
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uiStack *uiNewHorizontalStack(void)
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{
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stack *s;
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s = uiNew(stack);
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uiControl(s)->Destroy = stackDestroy;
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uiControl(s)->Handle = stackHandle;
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uiControl(s)->SetParent = stackSetParent;
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uiControl(s)->PreferredSize = stackPreferredSize;
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uiControl(s)->Resize = stackResize;
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uiControl(s)->Visible = stackVisible;
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uiControl(s)->Show = stackShow;
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uiControl(s)->Hide = stackHide;
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uiControl(s)->ContainerShow = stackContainerShow;
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uiControl(s)->ContainerHide = stackContainerHide;
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uiControl(s)->Enable = stackEnable;
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uiControl(s)->Disable = stackDisable;
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uiControl(s)->ContainerEnable = stackContainerEnable;
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uiControl(s)->ContainerDisable = stackContainerDisable;
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uiStack(s)->Append = stackAppend;
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uiStack(s)->Delete = stackDelete;
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uiStack(s)->Padded = stackPadded;
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uiStack(s)->SetPadded = stackSetPadded;
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return uiStack(s);
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}
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uiControl *uiNewVerticalStack(void)
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{
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uiStack *ss;
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stack *s;
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ss = uiNewHorizontalStack();
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s = (stack *) ss;
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s->vertical = 1;
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return ss;
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}
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