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// 8 june 2016
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#include "uipriv_windows.hpp"
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struct formChild {
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uiControl *c;
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HWND label;
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int stretchy;
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int height;
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};
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struct uiForm {
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uiWindowsControl c;
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HWND hwnd;
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std::vector<struct formChild> *controls;
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int padded;
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};
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static void formPadding(uiForm *f, int *xpadding, int *ypadding)
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{
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uiWindowsSizing sizing;
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*xpadding = 0;
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*ypadding = 0;
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if (f->padded) {
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uiWindowsGetSizing(f->hwnd, &sizing);
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uiWindowsSizingStandardPadding(&sizing, xpadding, ypadding);
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}
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}
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// via http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
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#define labelHeight 8
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#define labelYOffset 3
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static void formRelayout(uiForm *f)
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{
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RECT r;
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int x, y, width, height;
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int xpadding, ypadding;
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int nStretchy;
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int labelwid, stretchyht;
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int thiswid;
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int i;
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int minimumWidth, minimumHeight;
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uiWindowsSizing sizing;
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int labelht, labelyoff;
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int nVisible;
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if (f->controls->size() == 0)
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return;
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uiWindowsEnsureGetClientRect(f->hwnd, &r);
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x = r.left;
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y = r.top;
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width = r.right - r.left;
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height = r.bottom - r.top;
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// 0) get this Form's padding
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formPadding(f, &xpadding, &ypadding);
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// 1) get width of labels and height of non-stretchy controls
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// this will tell us how much space will be left for controls
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labelwid = 0;
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stretchyht = height;
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nStretchy = 0;
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nVisible = 0;
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for (struct formChild &fc : *(f->controls)) {
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if (!uiControlVisible(fc.c)) {
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ShowWindow(fc.label, SW_HIDE);
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continue;
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}
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ShowWindow(fc.label, SW_SHOW);
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nVisible++;
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thiswid = uiWindowsWindowTextWidth(fc.label);
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if (labelwid < thiswid)
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labelwid = thiswid;
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if (fc.stretchy) {
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nStretchy++;
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continue;
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}
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uiWindowsControlMinimumSize(uiWindowsControl(fc.c), &minimumWidth, &minimumHeight);
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fc.height = minimumHeight;
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stretchyht -= minimumHeight;
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}
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if (nVisible == 0) // nothing to do
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return;
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// 2) inset the available rect by the needed padding
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width -= xpadding;
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height -= (nVisible - 1) * ypadding;
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stretchyht -= (nVisible - 1) * ypadding;
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// 3) now get the width of controls and the height of stretchy controls
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width -= labelwid;
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if (nStretchy != 0) {
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stretchyht /= nStretchy;
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for (struct formChild &fc : *(f->controls)) {
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if (!uiControlVisible(fc.c))
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continue;
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if (fc.stretchy)
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fc.height = stretchyht;
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}
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}
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// 4) get the y offset
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labelyoff = labelYOffset;
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uiWindowsGetSizing(f->hwnd, &sizing);
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uiWindowsSizingDlgUnitsToPixels(&sizing, NULL, &labelyoff);
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// 5) now we can position controls
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// first, make relative to the top-left corner of the container
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// also prefer left alignment on Windows
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x = labelwid + xpadding;
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y = 0;
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for (const struct formChild &fc : *(f->controls)) {
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if (!uiControlVisible(fc.c))
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continue;
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labelht = labelHeight;
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uiWindowsGetSizing(f->hwnd, &sizing);
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uiWindowsSizingDlgUnitsToPixels(&sizing, NULL, &labelht);
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uiWindowsEnsureMoveWindowDuringResize(fc.label, 0, y + labelyoff - sizing.InternalLeading, labelwid, labelht);
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uiWindowsEnsureMoveWindowDuringResize((HWND) uiControlHandle(fc.c), x, y, width, fc.height);
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y += fc.height + ypadding;
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}
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}
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static void uiFormDestroy(uiControl *c)
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{
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uiForm *f = uiForm(c);
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for (const struct formChild &fc : *(f->controls)) {
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uiControlSetParent(fc.c, NULL);
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uiControlDestroy(fc.c);
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uiWindowsEnsureDestroyWindow(fc.label);
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}
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delete f->controls;
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uiWindowsEnsureDestroyWindow(f->hwnd);
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uiFreeControl(uiControl(f));
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}
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uiWindowsControlDefaultHandle(uiForm)
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uiWindowsControlDefaultParent(uiForm)
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uiWindowsControlDefaultSetParent(uiForm)
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uiWindowsControlDefaultToplevel(uiForm)
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uiWindowsControlDefaultVisible(uiForm)
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uiWindowsControlDefaultShow(uiForm)
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uiWindowsControlDefaultHide(uiForm)
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uiWindowsControlDefaultEnabled(uiForm)
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uiWindowsControlDefaultEnable(uiForm)
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uiWindowsControlDefaultDisable(uiForm)
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static void uiFormSyncEnableState(uiWindowsControl *c, int enabled)
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{
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uiForm *f = uiForm(c);
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if (uiWindowsShouldStopSyncEnableState(uiWindowsControl(f), enabled))
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return;
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for (const struct formChild &fc : *(f->controls))
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uiWindowsControlSyncEnableState(uiWindowsControl(fc.c), enabled);
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}
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uiWindowsControlDefaultSetParentHWND(uiForm)
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static void uiFormMinimumSize(uiWindowsControl *c, int *width, int *height)
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{
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uiForm *f = uiForm(c);
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int xpadding, ypadding;
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int nStretchy;
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// these two contain the largest minimum width and height of all stretchy controls in the form
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// all stretchy controls will use this value to determine the final minimum size
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int maxLabelWidth, maxControlWidth;
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int maxStretchyHeight;
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int labelwid;
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int i;
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int minimumWidth, minimumHeight;
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int nVisible;
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uiWindowsSizing sizing;
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*width = 0;
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*height = 0;
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if (f->controls->size() == 0)
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return;
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// 0) get this Form's padding
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formPadding(f, &xpadding, &ypadding);
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// 1) determine the longest width of all controls and labels; add in the height of non-stretchy controls and get (but not add in) the largest 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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maxLabelWidth = 0;
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maxControlWidth = 0;
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maxStretchyHeight = 0;
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nVisible = 0;
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for (const struct formChild &fc : *(f->controls)) {
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if (!uiControlVisible(fc.c))
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continue;
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nVisible++;
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labelwid = uiWindowsWindowTextWidth(fc.label);
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if (maxLabelWidth < labelwid)
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maxLabelWidth = labelwid;
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uiWindowsControlMinimumSize(uiWindowsControl(fc.c), &minimumWidth, &minimumHeight);
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if (fc.stretchy) {
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nStretchy++;
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if (maxStretchyHeight < minimumHeight)
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maxStretchyHeight = minimumHeight;
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}
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if (maxControlWidth < minimumWidth)
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maxControlWidth = minimumWidth;
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if (!fc.stretchy)
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*height += minimumHeight;
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}
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if (nVisible == 0) // nothing to show; return 0x0
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return;
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*width += maxLabelWidth + maxControlWidth;
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// 2) outset the desired rect with the needed padding
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*width += xpadding;
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*height += (nVisible - 1) * ypadding;
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// 3) and now we can add in stretchy controls
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*height += nStretchy * maxStretchyHeight;
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}
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static void uiFormMinimumSizeChanged(uiWindowsControl *c)
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{
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uiForm *f = uiForm(c);
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if (uiWindowsControlTooSmall(uiWindowsControl(f))) {
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uiWindowsControlContinueMinimumSizeChanged(uiWindowsControl(f));
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return;
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}
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formRelayout(f);
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}
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uiWindowsControlDefaultLayoutRect(uiForm)
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uiWindowsControlDefaultAssignControlIDZOrder(uiForm)
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static void uiFormChildVisibilityChanged(uiWindowsControl *c)
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{
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// TODO eliminate the redundancy
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uiWindowsControlMinimumSizeChanged(c);
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}
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static void formArrangeChildren(uiForm *f)
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{
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LONG_PTR controlID;
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HWND insertAfter;
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int i;
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controlID = 100;
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insertAfter = NULL;
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for (const struct formChild &fc : *(f->controls)) {
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// TODO assign label ID and z-order
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uiWindowsControlAssignControlIDZOrder(uiWindowsControl(fc.c), &controlID, &insertAfter);
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}
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}
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void uiFormAppend(uiForm *f, const char *label, uiControl *c, int stretchy)
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{
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struct formChild fc;
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WCHAR *wlabel;
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fc.c = c;
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wlabel = toUTF16(label);
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fc.label = uiWindowsEnsureCreateControlHWND(0,
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L"STATIC", wlabel,
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SS_LEFT | SS_NOPREFIX,
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hInstance, NULL,
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TRUE);
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uiprivFree(wlabel);
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uiWindowsEnsureSetParentHWND(fc.label, f->hwnd);
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fc.stretchy = stretchy;
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uiControlSetParent(fc.c, uiControl(f));
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uiWindowsControlSetParentHWND(uiWindowsControl(fc.c), f->hwnd);
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f->controls->push_back(fc);
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formArrangeChildren(f);
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uiWindowsControlMinimumSizeChanged(uiWindowsControl(f));
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}
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void uiFormDelete(uiForm *f, int index)
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{
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struct formChild fc;
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fc = (*(f->controls))[index];
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uiControlSetParent(fc.c, NULL);
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uiWindowsControlSetParentHWND(uiWindowsControl(fc.c), NULL);
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uiWindowsEnsureDestroyWindow(fc.label);
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f->controls->erase(f->controls->begin() + index);
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formArrangeChildren(f);
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uiWindowsControlMinimumSizeChanged(uiWindowsControl(f));
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}
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int uiFormNumChildren(uiForm *f)
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{
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return (int) f->controls->size();
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}
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int uiFormPadded(uiForm *f)
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{
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return f->padded;
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}
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void uiFormSetPadded(uiForm *f, int padded)
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{
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f->padded = padded;
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uiWindowsControlMinimumSizeChanged(uiWindowsControl(f));
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}
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static void onResize(uiWindowsControl *c)
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{
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formRelayout(uiForm(c));
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}
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uiForm *uiNewForm(void)
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{
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uiForm *f;
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uiWindowsNewControl(uiForm, f);
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f->hwnd = uiWindowsMakeContainer(uiWindowsControl(f), onResize);
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f->controls = new std::vector<struct formChild>;
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return f;
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}
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