123 lines
3.0 KiB
C++
123 lines
3.0 KiB
C++
// 14 april 2016
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#include "uipriv_windows.hpp"
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struct uiFontButton {
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uiWindowsControl c;
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HWND hwnd;
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struct fontDialogParams params;
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BOOL already;
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void (*onChanged)(uiFontButton *, void *);
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void *onChangedData;
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};
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static void uiFontButtonDestroy(uiControl *c)
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{
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uiFontButton *b = uiFontButton(c);
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uiWindowsUnregisterWM_COMMANDHandler(b->hwnd);
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destroyFontDialogParams(&(b->params));
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uiWindowsEnsureDestroyWindow(b->hwnd);
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uiFreeControl(uiControl(b));
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}
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static void updateFontButtonLabel(uiFontButton *b)
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{
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WCHAR *text;
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text = fontDialogParamsToString(&(b->params));
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setWindowText(text);
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uiFree(text);
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// changing the text might necessitate a change in the button's size
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uiWindowsControlMinimumSizeChanged(uiWindowsControl(b));
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}
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static BOOL onWM_COMMAND(uiControl *c, HWND hwnd, WORD code, LRESULT *lResult)
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{
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uiFontButton *b = uiFontButton(c);
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HWND parent;
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if (code != BN_CLICKED)
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return FALSE;
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parent = parentToplevel(b->hwnd);
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if (showFontDialog(parent, &(b->params))) {
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updateFontButtonLabel(b);
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(*(b->onChanged))(b, b->onChangedData);
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}
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*lResult = 0;
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return TRUE;
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}
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uiWindowsControlAllDefaultsExceptDestroy(uiFontButton)
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// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
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#define buttonHeight 14
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static void uiFontButtonMinimumSize(uiWindowsControl *c, intmax_t *width, intmax_t *height)
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{
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uiFontButton *b = uiFontButton(c);
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SIZE size;
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uiWindowsSizing sizing;
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int y;
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// try the comctl32 version 6 way
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size.cx = 0; // explicitly ask for ideal size
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size.cy = 0;
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if (SendMessageW(b->hwnd, BCM_GETIDEALSIZE, 0, (LPARAM) (&size)) != FALSE) {
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*width = size.cx;
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*height = size.cy;
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return;
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}
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// that didn't work; fall back to using Microsoft's metrics
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// Microsoft says to use a fixed width for all buttons; this isn't good enough
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// use the text width instead, with some edge padding
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*width = uiWindowsWindowTextWidth(b->hwnd) + (2 * GetSystemMetrics(SM_CXEDGE));
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y = buttonHeight;
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uiWindowsGetSizing(b->hwnd, &sizing);
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uiWindowsSizingDlgUnitsToPixels(&sizing, NULL, &y);
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*height = y;
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}
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static void defaultOnChanged(uiFontButton *b, void *data)
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{
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// do nothing
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}
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uiDrawTextFont *uiFontButtonFont(uiFontButton *b)
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{
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// we don't own b->params.font; we have to add a reference
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// we don't own b->params.familyName either; we have to copy it
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return mkTextFont(b->params.font, TRUE, b->params.familyName, TRUE, b->params.size);
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}
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void uiFontButtonOnChanged(uiFontButton *b, void (*f)(uiFontButton *, void *), void *data)
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{
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b->onChanged = f;
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b->onChangedData = data;
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}
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uiFontButton *uiNewFontButton(void)
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{
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uiFontButton *b;
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uiWindowsNewControl(uiFontButton, b);
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b->hwnd = uiWindowsEnsureCreateControlHWND(0,
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L"button", L"you should not be seeing this",
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BS_PUSHBUTTON | WS_TABSTOP,
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hInstance, NULL,
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TRUE);
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loadInitialFontDialogParams(&(b->params));
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uiWindowsRegisterWM_COMMANDHandler(b->hwnd, onWM_COMMAND, uiControl(b));
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uiFontButtonOnChanged(b, defaultOnChanged, NULL);
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updateFontButtonLabel(b);
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return b;
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}
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