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Migrated uiButton on Windows to the new backend. Most controls will, fortunately, be this smooth.

This commit is contained in:
Pietro Gagliardi 2015-08-29 21:02:38 -04:00
parent 8b564c2427
commit d4bb41f4c0
2 changed files with 96 additions and 122 deletions
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96
redo/windows/button.c Normal file
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// 7 april 2015
#include "uipriv_windows.h"
struct uiButton {
uiWindowsControl c;
HWND hwnd;
void (*onClicked)(uiButton *, void *);
void *onClickedData;
};
uiDarwinDefineControlWithOnDestroy(
uiButton, // type name
uiButtonType, // type function
uiWindowsUnregisterWM_COMMANDHandler(this->hwnd); // on destroy
)
static BOOL onWM_COMMAND(uiControl *c, HWND hwnd, WORD code, LRESULT *lResult)
{
uiButton *b = uiButton(c);
if (code != BN_CLICKED)
return FALSE;
(*(b->onClicked))(b, b->onClickedData);
*lResult = 0;
return TRUE;
}
// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
#define buttonHeight 14
static void minimumSize(uiControl *c, uiWindowsSizing *d, intmax_t *width, intmax_t *height)
{
uiButton *b = uiButton(c);
SIZE size;
// try the comctl32 version 6 way
size.cx = 0; // explicitly ask for ideal size
size.cy = 0;
if (SendMessageW(b->hwnd, BCM_GETIDEALSIZE, 0, (LPARAM) (&size)) != FALSE) {
*width = size.cx;
*height = size.cy;
return;
}
// that didn't work; fall back to using Microsoft's metrics
// Microsoft says to use a fixed width for all buttons; this isn't good enough
// use the text width instead, with some edge padding
*width = uiWindowsWindowTextWidth(b->hwnd) + (2 * GetSystemMetrics(SM_CXEDGE));
*height = uiWindowsDlgUnitsToY(buttonHeight, d->BaseY);
}
static void defaultOnClicked(uiButton *b, void *data)
{
// do nothing
}
char *uiButtonText(uiButton *b)
{
return uiWindowsUtilText(b->hwnd);
}
void uiButtonSetText(uiButton *b, const char *text)
{
uiWindowsUtilSetText(b->hwnd, text);
// changing the text might necessitate a change in the button's size
uiControlQueueResize(uiControl(b));
}
void uiButtonOnClicked(uiButton *b, void (*f)(uiButton *, void *), void *data)
{
b->onClicked = f;
b->onClickedData = data;
}
uiButton *uiNewButton(const char *text)
{
uiButton *b;
WCHAR *wtext;
b = (uiButton *) uiNewControl(uiButtonType());
wtext = toUTF16(text);
b->hwnd = uiWindowsEnsureCreateControlHWND(0,
L"button", wtext,
BS_PUSHBUTTON | WS_TABSTOP,
hInstance, NULL,
TRUE);
uiFree(wtext);
uiWindowsRegisterWM_COMMANDHandler(b->hwnd, onWM_COMMAND, uiControl(b));
uiButtonOnClicked(b, defaultOnClicked, NULL);
uiWindowsFinishNewControl(b, uiButton);
return b;
}

122
windows/button.c
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@ -1,122 +0,0 @@
// 7 april 2015
#include "uipriv_windows.h"
struct button {
uiButton b;
HWND hwnd;
void (*onClicked)(uiButton *, void *);
void *onClickedData;
void (*baseCommitDestroy)(uiControl *);
};
uiDefineControlType(uiButton, uiTypeButton, struct button)
static BOOL onWM_COMMAND(uiControl *c, HWND hwnd, WORD code, LRESULT *lResult)
{
struct button *b = (struct button *) c;
if (code != BN_CLICKED)
return FALSE;
(*(b->onClicked))(uiButton(b), b->onClickedData);
*lResult = 0;
return TRUE;
}
static void buttonCommitDestroy(uiControl *c)
{
struct button *b = (struct button *) c;
uiWindowsUnregisterWM_COMMANDHandler(b->hwnd);
(*(b->baseCommitDestroy))(uiControl(b));
}
static uintptr_t buttonHandle(uiControl *c)
{
struct button *b = (struct button *) c;
return (uintptr_t) (b->hwnd);
}
// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
#define buttonHeight 14
static void buttonPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
{
struct button *b = (struct button *) c;
SIZE size;
// try the comctl32 version 6 way
size.cx = 0; // explicitly ask for ideal size
size.cy = 0;
if (SendMessageW(b->hwnd, BCM_GETIDEALSIZE, 0, (LPARAM) (&size)) != FALSE) {
*width = size.cx;
*height = size.cy;
return;
}
// that didn't work; fall back to using Microsoft's metrics
// Microsoft says to use a fixed width for all buttons; this isn't good enough
// use the text width instead, with some edge padding
*width = uiWindowsWindowTextWidth(b->hwnd) + (2 * GetSystemMetrics(SM_CXEDGE));
*height = uiWindowsDlgUnitsToY(buttonHeight, d->Sys->BaseY);
}
static void defaultOnClicked(uiButton *b, void *data)
{
// do nothing
}
static char *buttonText(uiButton *bb)
{
struct button *b = (struct button *) bb;
return uiWindowsUtilText(b->hwnd);
}
static void buttonSetText(uiButton *bb, const char *text)
{
struct button *b = (struct button *) bb;
uiWindowsUtilSetText(b->hwnd, text);
// changing the text might necessitate a change in the button's size
uiControlQueueResize(uiControl(b));
}
static void buttonOnClicked(uiButton *bb, void (*f)(uiButton *, void *), void *data)
{
struct button *b = (struct button *) bb;
b->onClicked = f;
b->onClickedData = data;
}
uiButton *uiNewButton(const char *text)
{
struct button *b;
WCHAR *wtext;
b = (struct button *) uiWindowsNewSingleHWNDControl(uiTypeButton());
wtext = toUTF16(text);
b->hwnd = uiWindowsUtilCreateControlHWND(0,
L"button", wtext,
BS_PUSHBUTTON | WS_TABSTOP,
hInstance, NULL,
TRUE);
uiFree(wtext);
uiWindowsRegisterWM_COMMANDHandler(b->hwnd, onWM_COMMAND, uiControl(b));
b->onClicked = defaultOnClicked;
uiControl(b)->Handle = buttonHandle;
uiControl(b)->PreferredSize = buttonPreferredSize;
b->baseCommitDestroy = uiControl(b)->CommitDestroy;
uiControl(b)->CommitDestroy = buttonCommitDestroy;
uiButton(b)->Text = buttonText;
uiButton(b)->SetText = buttonSetText;
uiButton(b)->OnClicked = buttonOnClicked;
return uiButton(b);
}