289 lines
7.1 KiB
C
289 lines
7.1 KiB
C
// 7 april 2015
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#include "out/ui.h"
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#include "uipriv.h"
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struct box {
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uiBox b;
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void (*baseDestroy)(uiControl *);
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struct ptrArray *controls;
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int vertical;
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int padded;
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void (*baseResize)(uiControl *, intmax_t, intmax_t, intmax_t, intmax_t, uiSizing *);
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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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struct box *b = (struct box *) c;
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struct boxControl *bc;
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// don't chain up to base here; we need to destroy children ourselves first
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while (b->controls->len != 0) {
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bc = ptrArrayIndex(b->controls, struct boxControl *, 0);
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uiControlSetParent(bc->c, NULL);
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uiControlDestroy(bc->c);
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ptrArrayDelete(b->controls, 0);
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uiFree(bc);
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}
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ptrArrayDestroy(b->controls);
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// NOW we can chain up to base
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(*(b->baseDestroy))(uiControl(b));
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uiFree(b);
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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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struct box *b = (struct box *) c;
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struct boxControl *bc;
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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->controls->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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// TODO this is wrong if any controls are hidden
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if (b->vertical)
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*height = (b->controls->len - 1) * ypadding;
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else
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*width = (b->controls->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->controls->len; i++) {
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bc = ptrArrayIndex(b->controls, struct boxControl *, i);
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if (!uiControlContainerVisible(bc->c))
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continue;
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// TODO dchild
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uiControlPreferredSize(bc->c, d, &preferredWidth, &preferredHeight);
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if (bc->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 (!bc->stretchy)
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*height += preferredHeight;
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} else {
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if (!bc->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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struct box *b = (struct box *) c;
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struct boxControl *bc;
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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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uiSizing *dchild;
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(*(b->baseResize))(uiControl(b), x, y, width, height, d);
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if (b->controls->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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// TODO this is incorrect if any controls are hidden
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if (b->vertical)
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height -= (b->controls->len - 1) * ypadding;
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else
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width -= (b->controls->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->controls->len; i++) {
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bc = ptrArrayIndex(b->controls, struct boxControl *, i);
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if (!uiControlContainerVisible(bc->c))
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continue;
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if (bc->stretchy) {
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nStretchy++;
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continue;
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}
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uiControlPreferredSize(bc->c, d, &preferredWidth, &preferredHeight);
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if (b->vertical) { // all controls have same width
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bc->width = width;
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bc->height = preferredHeight;
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stretchyht -= preferredHeight;
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} else { // all controls have same height
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bc->width = preferredWidth;
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bc->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->controls->len; i++) {
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bc = ptrArrayIndex(b->controls, struct boxControl *, i);
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if (!uiControlContainerVisible(bc->c))
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continue;
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if (bc->stretchy) {
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bc->width = stretchywid;
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bc->height = stretchyht;
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}
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}
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// 3) now we can position controls
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dchild = uiControlSizing(uiControl(b));
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for (i = 0; i < b->controls->len; i++) {
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bc = ptrArrayIndex(b->controls, struct boxControl *, i);
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if (!uiControlContainerVisible(bc->c))
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continue;
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uiControlResize(bc->c, x, y, bc->width, bc->height, dchild);
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if (b->vertical)
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y += bc->height + ypadding;
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else
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x += bc->width + xpadding;
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}
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uiFreeSizing(dchild);
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}
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static void boxSysFunc(uiControl *c, uiControlSysFuncParams *p)
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{
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struct box *b = (struct box *) c;
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struct boxControl *bc;
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uintmax_t i;
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for (i = 0; i < b->controls->len; i++) {
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bc = ptrArrayIndex(b->controls, struct boxControl *, i);
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uiControlSysFunc(bc->c, p);
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}
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}
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static void boxAppend(uiBox *ss, uiControl *c, int stretchy)
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{
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struct box *b = (struct box *) ss;
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struct boxControl *bc;
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bc = uiNew(struct boxControl);
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bc->c = c;
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bc->stretchy = stretchy;
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uiControlSetParent(bc->c, uiControl(b));
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ptrArrayAppend(b->controls, bc);
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uiControlQueueResize(uiControl(b));
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}
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static void boxDelete(uiBox *ss, uintmax_t index)
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{
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struct box *b = (struct box *) ss;
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struct boxControl *bc;
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uiControl *removed;
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// TODO rearrange this
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// TODO sync call order with that of Destroy()
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bc = ptrArrayIndex(b->controls, struct boxControl *, index);
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removed = bc->c;
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ptrArrayDelete(b->controls, index);
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uiControlSetParent(removed, NULL);
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uiFree(bc);
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uiControlQueueResize(uiControl(b));
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}
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static int boxPadded(uiBox *ss)
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{
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struct box *b = (struct 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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struct box *b = (struct box *) ss;
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b->padded = padded;
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uiControlQueueResize(uiControl(b));
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}
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uiBox *uiNewHorizontalBox(void)
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{
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struct box *b;
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b = uiNew(struct box);
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uiTyped(b)->Type = uiTypeBox();
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uiMakeContainer(uiControl(b));
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b->controls = newPtrArray();
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b->baseDestroy = uiControl(b)->Destroy;
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uiControl(b)->Destroy = boxDestroy;
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uiControl(b)->PreferredSize = boxPreferredSize;
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b->baseResize = uiControl(b)->Resize;
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uiControl(b)->Resize = boxResize;
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uiControl(b)->SysFunc = boxSysFunc;
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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 *bb;
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struct box *b;
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bb = uiNewHorizontalBox();
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b = (struct box *) bb;
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b->vertical = 1;
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return bb;
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}
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