libui/redo/windows/spinbox.c

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// 8 april 2015
#include "uipriv_windows.h"
struct spinbox {
uiSpinbox s;
HWND hwnd;
HWND updown;
void (*baseResize)(uiControl *, intmax_t, intmax_t, intmax_t, intmax_t, uiSizing *);
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void (*onChanged)(uiSpinbox *, void *);
void *onChangedData;
BOOL inhibitChanged;
void (*baseCommitDestroy)(uiControl *);
};
uiDefineControlType(uiSpinbox, uiTypeSpinbox, struct spinbox)
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// utility functions
static intmax_t value(struct spinbox *s)
{
BOOL neededCap = FALSE;
LRESULT val;
// This verifies the value put in, capping it automatically.
// We don't need to worry about checking for an error; that flag should really be called "did we have to cap?".
// We DO need to set the value in case of a cap though.
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// TODO wine only?
val = SendMessageW(s->updown, UDM_GETPOS32, 0, (LPARAM) (&neededCap));
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if (neededCap) {
s->inhibitChanged = TRUE;
SendMessageW(s->updown, UDM_SETPOS32, 0, (LPARAM) val);
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s->inhibitChanged = FALSE;
}
return (intmax_t) val;
}
// control implementation
static BOOL onWM_COMMAND(uiControl *c, HWND hwnd, WORD code, LRESULT *lResult)
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{
struct spinbox *s = (struct spinbox *) c;
if (code != EN_CHANGE)
return FALSE;
if (s->inhibitChanged)
return FALSE;
// value() does the work for us
value(s);
(*(s->onChanged))(uiSpinbox(s), s->onChangedData);
return TRUE;
}
static void spinboxCommitDestroy(uiControl *c)
{
struct spinbox *s = (struct spinbox *) c;
uiWindowsUnregisterWM_COMMANDHandler(s->hwnd);
if (DestroyWindow(s->updown) == 0)
logLastError("error destroying updown in spinboxCommitDestroy()");
(*(s->baseCommitDestroy))(uiControl(s));
}
// the edit control is the one to return here
// we can't return the updown because it gets recreated on resize
static uintptr_t spinboxHandle(uiControl *c)
{
struct spinbox *s = (struct spinbox *) c;
return (uintptr_t) (s->hwnd);
}
// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
#define entryWidth 107 /* this is actually the shorter progress bar width, but Microsoft only indicates as wide as necessary */
#define entryHeight 14
static void spinboxPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
{
*width = uiWindowsDlgUnitsToX(entryWidth, d->Sys->BaseX);
*height = uiWindowsDlgUnitsToY(entryHeight, d->Sys->BaseY);
}
// an up-down control will only properly position itself the first time
// stupidly, there are no messages to force a size calculation, nor can I seem to reset the buddy window to force a new position
// alas, we have to make a new up/down control each time :(
static void recreateUpDown(struct spinbox *s)
{
HWND parent;
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BOOL preserve = FALSE;
intmax_t current;
// wine uses this type
INT min, max;
parent = GetAncestor(s->hwnd, GA_PARENT);
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if (s->updown != NULL) {
preserve = TRUE;
current = value(s);
SendMessageW(s->updown, UDM_GETRANGE32, (WPARAM) (&min), (LPARAM) (&max));
if (DestroyWindow(s->updown) == 0)
logLastError("error destroying old updown in recreateUpDown()");
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}
s->inhibitChanged = TRUE;
s->updown = CreateWindowExW(0,
UPDOWN_CLASSW, L"",
// no WS_VISIBLE; we set visibility ourselves
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// TODO tab stop?
WS_CHILD | UDS_ALIGNRIGHT | UDS_ARROWKEYS | UDS_HOTTRACK | UDS_NOTHOUSANDS | UDS_SETBUDDYINT,
// this is important; it's necessary for autosizing to work
0, 0, 0, 0,
parent, NULL, hInstance, NULL);
if (s->updown == NULL)
logLastError("error creating updown in recreateUpDown()");
SendMessageW(s->updown, UDM_SETBUDDY, (WPARAM) (s->hwnd), 0);
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if (preserve) {
SendMessageW(s->updown, UDM_SETRANGE32, (WPARAM) min, (LPARAM) max);
SendMessageW(s->updown, UDM_SETPOS32, 0, (LPARAM) current);
}
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// preserve the z-order
uiWindowsUtilSetZOrder(s->updown, (uintptr_t) (s->hwnd));
if (uiControlContainerVisible(uiControl(s)))
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uiWindowsUtilShow(s->updown);
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s->inhibitChanged = FALSE;
}
static void spinboxResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
{
struct spinbox *s = (struct spinbox *) c;
(*(s->baseResize))(uiControl(s), x, y, width, height, d);
recreateUpDown(s);
}
#define COMMIT(n, f) \
static void spinboxCommit ## n(uiControl *c) \
{ \
struct spinbox *s = (struct spinbox *) c; \
f(s->hwnd); \
f(s->updown); \
}
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COMMIT(Show, uiWindowsUtilShow)
COMMIT(Hide, uiWindowsUtilHide)
COMMIT(Enable, uiWindowsUtilEnable)
COMMIT(Disable, uiWindowsUtilDisable)
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// StartZOrder() is fine (the edit is the first control, and that's satisfied by the singleHWND interface)
// SetZOrder() is not
// TODO don't even bother with singleHWND at all
static uintptr_t spinboxSetZOrder(uiControl *c, uintptr_t insertAfter)
{
struct spinbox *s = (struct spinbox *) c;
uiWindowsUtilSetZOrder(s->hwnd, insertAfter);
uiWindowsUtilSetZOrder(s->updown, (uintptr_t) (s->hwnd));
return (uintptr_t) (s->updown);
}
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static void defaultOnChanged(uiSpinbox *s, void *data)
{
// do nothing
}
static intmax_t spinboxValue(uiSpinbox *ss)
{
struct spinbox *s = (struct spinbox *) ss;
return value(s);
}
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static void spinboxSetValue(uiSpinbox *ss, intmax_t value)
{
struct spinbox *s = (struct spinbox *) ss;
s->inhibitChanged = TRUE;
SendMessageW(s->updown, UDM_SETPOS32, 0, (LPARAM) value);
s->inhibitChanged = FALSE;
}
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static void spinboxOnChanged(uiSpinbox *ss, void (*f)(uiSpinbox *, void *), void *data)
{
struct spinbox *s = (struct spinbox *) ss;
s->onChanged = f;
s->onChangedData = data;
}
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uiSpinbox *uiNewSpinbox(intmax_t min, intmax_t max)
{
struct spinbox *s;
s = (struct spinbox *) uiWindowsNewSingleHWNDControl(uiTypeSpinbox());
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s->hwnd = uiWindowsUtilCreateControlHWND(WS_EX_CLIENTEDGE,
L"edit", L"",
// TODO ES_NUMBER doesn't allow typing in a leading -
ES_AUTOHSCROLL | ES_LEFT | ES_NOHIDESEL | ES_NUMBER | WS_TABSTOP,
hInstance, NULL,
TRUE);
uiWindowsRegisterWM_COMMANDHandler(s->hwnd, onWM_COMMAND, uiControl(s));
recreateUpDown(s);
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s->inhibitChanged = TRUE;
SendMessageW(s->updown, UDM_SETRANGE32, (WPARAM) min, (LPARAM) max);
SendMessageW(s->updown, UDM_SETPOS32, 0, (LPARAM) min);
s->inhibitChanged = FALSE;
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s->onChanged = defaultOnChanged;
uiControl(s)->Handle = spinboxHandle;
uiControl(s)->PreferredSize = spinboxPreferredSize;
s->baseResize = uiControl(s)->Resize;
uiControl(s)->Resize = spinboxResize;
s->baseCommitDestroy = uiControl(s)->CommitDestroy;
uiControl(s)->CommitDestroy = spinboxCommitDestroy;
uiControl(s)->CommitShow = spinboxCommitShow;
uiControl(s)->CommitHide = spinboxCommitHide;
uiControl(s)->CommitEnable = spinboxCommitEnable;
uiControl(s)->CommitDisable = spinboxCommitDisable;
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uiControl(s)->SetZOrder = spinboxSetZOrder;
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uiSpinbox(s)->Value = spinboxValue;
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uiSpinbox(s)->SetValue = spinboxSetValue;
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uiSpinbox(s)->OnChanged = spinboxOnChanged;
return uiSpinbox(s);
}