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// 16 may 2015
#include "uipriv_windows.hpp"
struct uiGroup {
uiWindowsControl c;
HWND hwnd;
struct uiControl *child;
int margined;
};
// from https://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
#define groupXMargin 6
#define groupYMarginTop 11 /* note this value /includes/ the groupbox label */
#define groupYMarginBottom 7
// unfortunately because the client area of a groupbox includes the frame and caption text, we have to apply some margins ourselves, even if we don't want "any"
// these were deduced by hand based on the standard DLU conversions; the X and Y top margins are the width and height, respectively, of one character cell
// they can be fine-tuned later
#define groupUnmarginedXMargin 4
#define groupUnmarginedYMarginTop 8
#define groupUnmarginedYMarginBottom 3
static void groupMargins(uiGroup *g, int *mx, int *mtop, int *mbottom)
{
uiWindowsSizing sizing;
*mx = groupUnmarginedXMargin;
*mtop = groupUnmarginedYMarginTop;
*mbottom = groupUnmarginedYMarginBottom;
if (g->margined) {
*mx = groupXMargin;
*mtop = groupYMarginTop;
*mbottom = groupYMarginBottom;
}
uiWindowsGetSizing(g->hwnd, &sizing);
uiWindowsSizingDlgUnitsToPixels(&sizing, mx, mtop);
uiWindowsSizingDlgUnitsToPixels(&sizing, NULL, mbottom);
}
static void groupRelayout(uiGroup *g)
{
RECT r;
int mx, mtop, mbottom;
if (g->child == NULL)
return;
uiWindowsEnsureGetClientRect(g->hwnd, &r);
groupMargins(g, &mx, &mtop, &mbottom);
r.left += mx;
r.top += mtop;
r.right -= mx;
r.bottom -= mbottom;
uiWindowsEnsureMoveWindowDuringResize((HWND) uiControlHandle(g->child), r.left, r.top, r.right - r.left, r.bottom - r.top);
}
static void uiGroupDestroy(uiControl *c)
{
uiGroup *g = uiGroup(c);
if (g->child != NULL) {
uiControlSetParent(g->child, NULL);
uiControlDestroy(g->child);
}
uiWindowsEnsureDestroyWindow(g->hwnd);
uiFreeControl(uiControl(g));
}
uiWindowsControlDefaultHandle(uiGroup)
uiWindowsControlDefaultParent(uiGroup)
uiWindowsControlDefaultSetParent(uiGroup)
uiWindowsControlDefaultToplevel(uiGroup)
uiWindowsControlDefaultVisible(uiGroup)
uiWindowsControlDefaultShow(uiGroup)
uiWindowsControlDefaultHide(uiGroup)
uiWindowsControlDefaultEnabled(uiGroup)
uiWindowsControlDefaultEnable(uiGroup)
uiWindowsControlDefaultDisable(uiGroup)
uiWindowsControlDefaultSetFocus(uiGroup)
static void uiGroupSyncEnableState(uiWindowsControl *c, int enabled)
{
uiGroup *g = uiGroup(c);
if (uiWindowsShouldStopSyncEnableState(uiWindowsControl(g), enabled))
return;
EnableWindow(g->hwnd, enabled);
if (g->child != NULL)
uiWindowsControlSyncEnableState(uiWindowsControl(g->child), enabled);
}
uiWindowsControlDefaultSetParentHWND(uiGroup)
static void uiGroupMinimumSize(uiWindowsControl *c, int *width, int *height)
{
uiGroup *g = uiGroup(c);
int mx, mtop, mbottom;
int labelWidth;
*width = 0;
*height = 0;
if (g->child != NULL)
uiWindowsControlMinimumSize(uiWindowsControl(g->child), width, height);
labelWidth = uiWindowsWindowTextWidth(g->hwnd);
if (*width < labelWidth) // don't clip the label; it doesn't ellipsize
*width = labelWidth;
groupMargins(g, &mx, &mtop, &mbottom);
*width += 2 * mx;
*height += mtop + mbottom;
}
static void uiGroupMinimumSizeChanged(uiWindowsControl *c)
{
uiGroup *g = uiGroup(c);
if (uiWindowsControlTooSmall(uiWindowsControl(g))) {
uiWindowsControlContinueMinimumSizeChanged(uiWindowsControl(g));
return;
}
groupRelayout(g);
}
static void uiGroupSetMinSize(uiControl *c, int w, int h)
{
// checkme
uiGroupMinimumSizeChanged(uiWindowsControl(c));
}
uiWindowsControlDefaultLayoutRect(uiGroup)
uiWindowsControlDefaultAssignControlIDZOrder(uiGroup)
static void uiGroupChildVisibilityChanged(uiWindowsControl *c)
{
// TODO eliminate the redundancy
uiWindowsControlMinimumSizeChanged(c);
}
char *uiGroupTitle(uiGroup *g)
{
return uiWindowsWindowText(g->hwnd);
}
void uiGroupSetTitle(uiGroup *g, const char *text)
{
uiWindowsSetWindowText(g->hwnd, text);
// changing the text might necessitate a change in the groupbox's size
uiWindowsControlMinimumSizeChanged(uiWindowsControl(g));
}
void uiGroupSetChild(uiGroup *g, uiControl *child)
{
if (g->child != NULL) {
uiControlSetParent(g->child, NULL);
uiWindowsControlSetParentHWND(uiWindowsControl(g->child), NULL);
}
g->child = child;
if (g->child != NULL) {
uiControlSetParent(g->child, uiControl(g));
uiWindowsControlSetParentHWND(uiWindowsControl(g->child), g->hwnd);
uiWindowsControlAssignSoleControlIDZOrder(uiWindowsControl(g->child));
uiWindowsControlMinimumSizeChanged(uiWindowsControl(g));
}
}
int uiGroupMargined(uiGroup *g)
{
return g->margined;
}
void uiGroupSetMargined(uiGroup *g, int margined)
{
g->margined = margined;
uiWindowsControlMinimumSizeChanged(uiWindowsControl(g));
}
static LRESULT CALLBACK groupSubProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
uiGroup *g = uiGroup(dwRefData);
WINDOWPOS *wp = (WINDOWPOS *) lParam;
MINMAXINFO *mmi = (MINMAXINFO *) lParam;
int minwid, minht;
LRESULT lResult;
if (handleParentMessages(hwnd, uMsg, wParam, lParam, &lResult) != FALSE)
return lResult;
switch (uMsg) {
case WM_WINDOWPOSCHANGED:
if ((wp->flags & SWP_NOSIZE) != 0)
break;
groupRelayout(g);
return 0;
case WM_GETMINMAXINFO:
lResult = DefWindowProcW(hwnd, uMsg, wParam, lParam);
uiWindowsControlMinimumSize(uiWindowsControl(g), &minwid, &minht);
mmi->ptMinTrackSize.x = minwid;
mmi->ptMinTrackSize.y = minht;
return lResult;
case WM_NCDESTROY:
if (RemoveWindowSubclass(hwnd, groupSubProc, uIdSubclass) == FALSE)
logLastError(L"error removing groupbox subclass");
break;
}
return DefSubclassProc(hwnd, uMsg, wParam, lParam);
}
uiGroup *uiNewGroup(const char *text)
{
uiGroup *g;
WCHAR *wtext;
uiWindowsNewControl(uiGroup, g);
wtext = toUTF16(text);
g->hwnd = uiWindowsEnsureCreateControlHWND(WS_EX_CONTROLPARENT,
L"button", wtext,
BS_GROUPBOX,
hInstance, NULL,
TRUE);
uiFree(wtext);
if (SetWindowSubclass(g->hwnd, groupSubProc, 0, (DWORD_PTR) g) == FALSE)
logLastError(L"error subclassing groupbox to handle parent messages");
return g;
}
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