398 lines
8.8 KiB
C
398 lines
8.8 KiB
C
// 7 april 2015
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#include "uipriv.h"
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typedef struct box box;
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typedef struct boxControl boxControl;
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struct box {
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uiBox s;
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boxControl *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 boxControl {
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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 boxDestroy(uiControl *c)
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{
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box *b = (box *) c;
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uintmax_t i;
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if (b->parent != NULL)
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complain("attempt to destroy a uiControl at %p while it still has a parent %p", c, b->parent);
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for (i = 0; i < b->len; i++)
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uiControlDestroy(b->controls[i].c);
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uiFree(b->controls);
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uiFree(b);
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}
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static uintptr_t boxHandle(uiControl *c)
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{
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return 0;
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}
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static void boxSetParent(uiControl *c, uiParent *parent)
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{
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box *b = (box *) c;
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uintmax_t i;
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uiParent *oldparent;
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oldparent = b->parent;
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b->parent = parent;
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for (i = 0; i < b->len; i++)
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uiControlSetParent(b->controls[i].c, b->parent);
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if (oldparent != NULL)
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uiParentUpdate(oldparent);
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if (b->parent != NULL)
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uiParentUpdate(b->parent);
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}
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static void boxPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
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{
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box *b = (box *) 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 box
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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 (b->len == 0)
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return;
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// 0) get this Box's padding
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xpadding = 0;
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ypadding = 0;
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if (b->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 (b->vertical)
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*height = (b->len - 1) * ypadding;
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else
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*width = (b->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 < b->len; i++) {
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if (!uiControlVisible(b->controls[i].c))
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continue;
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uiControlPreferredSize(b->controls[i].c, d, &preferredWidth, &preferredHeight);
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if (b->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 (b->vertical) {
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if (*width < preferredWidth)
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*width = preferredWidth;
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if (!b->controls[i].stretchy)
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*height += preferredHeight;
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} else {
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if (!b->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 (b->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 boxResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
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{
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box *b = (box *) 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 (b->len == 0)
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return;
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// -1) get this Box's padding
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xpadding = 0;
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ypadding = 0;
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if (b->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 (b->vertical)
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height -= (b->len - 1) * ypadding;
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else
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width -= (b->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 < b->len; i++) {
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if (!uiControlVisible(b->controls[i].c))
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continue;
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if (b->controls[i].stretchy) {
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nStretchy++;
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continue;
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}
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uiControlPreferredSize(b->controls[i].c, d, &preferredWidth, &preferredHeight);
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if (b->vertical) { // all controls have same width
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b->controls[i].width = width;
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b->controls[i].height = preferredHeight;
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stretchyht -= preferredHeight;
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} else { // all controls have same height
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b->controls[i].width = preferredWidth;
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b->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 (b->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 < b->len; i++) {
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if (!uiControlVisible(b->controls[i].c))
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continue;
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if (b->controls[i].stretchy) {
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b->controls[i].width = stretchywid;
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b->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 < b->len; i++) {
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if (!uiControlVisible(b->controls[i].c))
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continue;
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uiControlResize(b->controls[i].c, x, y, b->controls[i].width, b->controls[i].height, d);
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if (b->vertical)
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y += b->controls[i].height + ypadding;
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else
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x += b->controls[i].width + xpadding;
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}
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}
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static int boxVisible(uiControl *c)
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{
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box *b = (box *) c;
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return !(b->userHid);
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}
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static void boxShow(uiControl *c)
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{
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box *b = (box *) c;
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uintmax_t i;
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b->userHid = 0;
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if (!b->containerHid) {
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for (i = 0; i < b->len; i++)
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uiControlContainerShow(b->controls[i].c);
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if (b->parent != NULL)
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uiParentUpdate(b->parent);
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}
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}
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static void boxHide(uiControl *c)
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{
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box *b = (box *) c;
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uintmax_t i;
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b->userHid = 1;
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for (i = 0; i < b->len; i++)
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uiControlContainerHide(b->controls[i].c);
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if (b->parent != NULL)
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uiParentUpdate(b->parent);
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}
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static void boxContainerShow(uiControl *c)
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{
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box *b = (box *) c;
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uintmax_t i;
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b->containerHid = 0;
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if (!b->userHid) {
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for (i = 0; i < b->len; i++)
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uiControlContainerShow(b->controls[i].c);
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if (b->parent != NULL)
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uiParentUpdate(b->parent);
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}
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}
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static void boxContainerHide(uiControl *c)
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{
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box *b = (box *) c;
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uintmax_t i;
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b->containerHid = 1;
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for (i = 0; i < b->len; i++)
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uiControlContainerHide(b->controls[i].c);
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if (b->parent != NULL)
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uiParentUpdate(b->parent);
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}
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static void boxEnable(uiControl *c)
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{
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box *b = (box *) c;
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uintmax_t i;
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b->userDisabled = 0;
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if (!b->containerDisabled)
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for (i = 0; i < b->len; i++)
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uiControlContainerEnable(b->controls[i].c);
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}
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static void boxDisable(uiControl *c)
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{
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box *b = (box *) c;
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uintmax_t i;
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b->userDisabled = 1;
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for (i = 0; i < b->len; i++)
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uiControlContainerDisable(b->controls[i].c);
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}
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static void boxContainerEnable(uiControl *c)
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{
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box *b = (box *) c;
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uintmax_t i;
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b->containerDisabled = 0;
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if (!b->userDisabled)
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for (i = 0; i < b->len; i++)
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uiControlContainerEnable(b->controls[i].c);
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}
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static void boxContainerDisable(uiControl *c)
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{
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box *b = (box *) c;
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uintmax_t i;
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b->containerDisabled = 1;
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for (i = 0; i < b->len; i++)
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uiControlContainerDisable(b->controls[i].c);
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}
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#define boxCapGrow 32
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static void boxAppend(uiBox *ss, uiControl *c, int stretchy)
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{
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box *b = (box *) ss;
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if (b->len >= b->cap) {
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b->cap += boxCapGrow;
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b->controls = (boxControl *) uiRealloc(b->controls, b->cap * sizeof (boxControl), "boxControl[]");
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}
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b->controls[b->len].c = c;
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b->controls[b->len].stretchy = stretchy;
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b->len++; // must be here for parent updates to work
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if (b->parent != NULL) {
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uiControlSetParent(b->controls[b->len - 1].c, b->parent);
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uiParentUpdate(b->parent);
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}
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}
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static void boxDelete(uiBox *ss, uintmax_t index)
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{
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box *b = (box *) ss;
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uiControl *removed;
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uintmax_t i;
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removed = b->controls[index].c;
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// TODO switch to memmove?
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for (i = index; i < b->len - 1; i++)
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b->controls[i] = b->controls[i + 1];
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// TODO memset the last one to NULL
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b->len--;
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if (b->parent != NULL) {
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uiControlSetParent(removed, NULL);
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uiParentUpdate(b->parent);
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}
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}
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static int boxPadded(uiBox *ss)
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{
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box *b = (box *) ss;
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return b->padded;
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}
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static void boxSetPadded(uiBox *ss, int padded)
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{
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box *b = (box *) ss;
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b->padded = padded;
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if (b->parent != NULL)
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uiParentUpdate(b->parent);
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}
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uiBox *uiNewHorizontalBox(void)
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{
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box *b;
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b = uiNew(box);
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uiControl(b)->Destroy = boxDestroy;
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uiControl(b)->Handle = boxHandle;
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uiControl(b)->SetParent = boxSetParent;
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uiControl(b)->PreferredSize = boxPreferredSize;
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uiControl(b)->Resize = boxResize;
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uiControl(b)->Visible = boxVisible;
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uiControl(b)->Show = boxShow;
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uiControl(b)->Hide = boxHide;
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uiControl(b)->ContainerShow = boxContainerShow;
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uiControl(b)->ContainerHide = boxContainerHide;
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uiControl(b)->Enable = boxEnable;
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uiControl(b)->Disable = boxDisable;
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uiControl(b)->ContainerEnable = boxContainerEnable;
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uiControl(b)->ContainerDisable = boxContainerDisable;
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uiBox(b)->Append = boxAppend;
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uiBox(b)->Delete = boxDelete;
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uiBox(b)->Padded = boxPadded;
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uiBox(b)->SetPadded = boxSetPadded;
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return uiBox(b);
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}
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uiBox *uiNewVerticalBox(void)
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{
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uiBox *ss;
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box *b;
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ss = uiNewHorizontalBox();
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b = (box *) ss;
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b->vertical = 1;
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return ss;
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}
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