133 lines
5.7 KiB
C
133 lines
5.7 KiB
C
// 7 april 2015
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/*
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This file assumes that you have included <windows.h> and "ui.h" beforehand. It provides API-specific functions for interfacing with foreign controls in Windows.
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*/
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#ifndef __LIBUI_UI_WINDOWS_H__
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#define __LIBUI_UI_WINDOWS_H__
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typedef struct uiWindowsSizing uiWindowsSizing;
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typedef struct uiWindowsControl uiWindowsControl;
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struct uiWindowsControl {
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uiControl c;
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void (*CommitSetParent)(uiWindowsControl *, HWND);
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void (*MinimumSize)(uiWindowsControl *, uiWindowsSizing *, intmax_t *, intmax_t *);
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void (*Relayout)(uiWindowsControl *);
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};
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_UI_EXTERN uintmax_t uiWindowsControlType(void);
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#define uiWindowsControl(this) ((uiWindowsControl *) uiIsA((this), uiWindowsControlType(), 1))
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// TODO document
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_UI_EXTERN void uiWindowsControlTriggerRelayout(uiWindowsControl *);
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// TODO document
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#define uiWindowsDefineControlWithOnDestroy(type, typefn, onDestroy) \
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static uintmax_t _ ## type ## Type = 0; \
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uintmax_t typefn(void) \
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{ \
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if (_ ## type ## Type == 0) \
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_ ## type ## Type = uiRegisterType(#type, uiWindowsControlType(), sizeof (type)); \
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return _ ## type ## Type; \
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} \
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static void _ ## type ## CommitDestroy(uiControl *c) \
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{ \
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type *this = type(c); \
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onDestroy; \
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uiWindowsEnsureDestroyWindow(this->hwnd); \
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} \
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static uintptr_t _ ## type ## Handle(uiControl *c) \
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{ \
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return (uintptr_t) (type(c)->hwnd); \
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} \
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static void _ ## type ## ContainerUpdateState(uiControl *c) \
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{ \
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/* do nothing */ \
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} \
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static void _ ## type ## CommitSetParent(uiWindowsControl *c, HWND parent) \
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{ \
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uiWindowsEnsureSetParent(type(c)->hwnd, parent); \
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} \
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static void _ ## type ## Relayout(uiWindowsControl *c) \
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{ \
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/* do nothing */ \
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} \
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static void minimumSize(uiWindowsControl *c, uiWindowsSizing *d, intmax_t *width, intmax_t *height);
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#define uiWindowsDefineControl(type, typefn) \
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uiWindowsDefineControlWithOnDestroy(type, typefn, (void) this;)
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#define uiWindowsFinishNewControl(variable, type) \
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uiControl(variable)->CommitDestroy = _ ## type ## CommitDestroy; \
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uiControl(variable)->Handle = _ ## type ## Handle; \
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uiControl(variable)->ContainerUpdateState = _ ## type ## ContainerUpdateState; \
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uiWindowsControl(variable)->CommitSetParent = _ ## type ## CommitSetParent; \
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uiWindowsControl(variable)->MinimumSize = minimumSize; \
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uiWindowsControl(variable)->Relayout = _ ## type ## Relayout; \
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uiWindowsFinishControl(uiControl(variable));
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// This is a function used to set up a control.
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// Don't call it directly; use uiWindowsFinishNewControl() instead.
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_UI_EXTERN void uiWindowsFinishControl(uiControl *c);
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// This creates a HWND compatible with libui.
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// It has no failure state; libui handles errors for you.
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_UI_EXTERN HWND uiWindowsEnsureCreateControlHWND(DWORD dwExStyle, LPCWSTR lpClassName, LPCWSTR lpWindowName, DWORD dwStyle, HINSTANCE hInstance, LPVOID lpParam, BOOL useStandardControlFont);
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// This is a wrapper for certain Windows API functions; use them to have libui handle errors for you.
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_UI_EXTERN void uiWindowsEnsureDestroyWindow(HWND hwnd);
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_UI_EXTERN void uiWindowsEnsureSetParent(HWND hwnd, HWND parent);
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////////////////////////////////////////////
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/////////////////// TODO ///////////////////
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////////////////////////////////////////////
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// These provide single-HWND implementations of uiControl methods you can use in yours.
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_UI_EXTERN void uiWindowsUtilDestroy(HWND hwnd);
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_UI_EXTERN void uiWindowsUtilSetParent(HWND hwnd, uiControl *parent);
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_UI_EXTERN void uiWindowsUtilResize(HWND hwnd, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d);
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_UI_EXTERN void uiWindowsUtilShow(HWND hwnd);
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_UI_EXTERN void uiWindowsUtilHide(HWND hwnd);
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_UI_EXTERN void uiWindowsUtilEnable(HWND hwnd);
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_UI_EXTERN void uiWindowsUtilDisable(HWND hwnd);
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_UI_EXTERN uintptr_t uiWindowsUtilStartZOrder(HWND hwnd);
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_UI_EXTERN uintptr_t uiWindowsUtilSetZOrder(HWND hwnd, uintptr_t insertAfter);
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_UI_EXTERN int uiWindowsUtilHasTabStops(HWND hwnd);
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// This contains the Windows-specific parts of the uiSizing structure.
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// BaseX and BaseY are the dialog base units.
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// InternalLeading is the standard control font's internal leading; labels in uiForms use this for correct Y positioning.
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// CoordFrom and CoordTo are the window handles to convert coordinates passed to uiControlResize() from and to (viaa MapWindowRect()) before passing to one of the Windows API resizing functions.
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struct uiWindowsSizing {
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int BaseX;
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int BaseY;
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LONG InternalLeading;
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HWND CoordFrom;
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HWND CoordTo;
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};
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// Use these in your preferredSize() implementation with baseX and baseY.
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#define uiWindowsDlgUnitsToX(dlg, baseX) MulDiv((dlg), baseX, 4)
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#define uiWindowsDlgUnitsToY(dlg, baseY) MulDiv((dlg), baseY, 8)
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// and use this if you need the text of the window width
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_UI_EXTERN intmax_t uiWindowsWindowTextWidth(HWND hwnd);
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// these functions get and set the window text for a single HWND
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// the value returned should be freed with uiFreeText()
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_UI_EXTERN char *uiWindowsUtilText(HWND);
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_UI_EXTERN void uiWindowsUtilSetText(HWND, const char *);
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// These provide event handling.
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// For WM_COMMAND, the WORD parameter is the notification code.
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// For WM_HSCROLL, the WORD parameter is the scroll operation.
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_UI_EXTERN void uiWindowsRegisterWM_COMMANDHandler(HWND, BOOL (*)(uiControl *, HWND, WORD, LRESULT *), uiControl *);
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_UI_EXTERN void uiWindowsRegisterWM_NOTIFYHandler(HWND, BOOL (*)(uiControl *, HWND, NMHDR *, LRESULT *), uiControl *);
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_UI_EXTERN void uiWindowsRegisterWM_HSCROLLHandler(HWND, BOOL (*)(uiControl *, HWND, WORD, LRESULT *), uiControl *);
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_UI_EXTERN void uiWindowsUnregisterWM_COMMANDHandler(HWND);
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_UI_EXTERN void uiWindowsUnregisterWM_NOTIFYHandler(HWND);
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_UI_EXTERN void uiWindowsUnregisterWM_HSCROLLHandler(HWND);
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_UI_EXTERN void uiWindowsRegisterReceiveWM_WININICHANGE(HWND);
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_UI_EXTERN void uiWindowsUnregisterReceiveWM_WININICHANGE(HWND);
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#endif
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