812 lines
23 KiB
C
812 lines
23 KiB
C
/*
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* tkWinButton.c --
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*
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* This file implements the Windows specific portion of the button
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* widgets.
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*
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* Copyright (c) 1996 by Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* SCCS: @(#) tkWinButton.c 1.12 97/09/02 13:18:27
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*/
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#define OEMRESOURCE
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#include "tkWinInt.h"
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#include "tkButton.h"
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/*
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* These macros define the base style flags for the different button types.
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*/
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#define LABEL_STYLE (BS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS)
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#define PUSH_STYLE (BS_OWNERDRAW | BS_PUSHBUTTON | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS)
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#define CHECK_STYLE (BS_OWNERDRAW | BS_CHECKBOX | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS)
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#define RADIO_STYLE (BS_OWNERDRAW | BS_RADIOBUTTON | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS)
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static DWORD buttonStyles[] = {
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LABEL_STYLE, PUSH_STYLE, CHECK_STYLE, RADIO_STYLE
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};
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/*
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* Declaration of Windows specific button structure.
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*/
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typedef struct WinButton {
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TkButton info; /* Generic button info. */
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WNDPROC oldProc; /* Old window procedure. */
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HWND hwnd; /* Current window handle. */
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Pixmap pixmap; /* Bitmap for rendering the button. */
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DWORD style; /* Window style flags. */
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} WinButton;
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/*
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* The following macro reverses the order of RGB bytes to convert
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* between RGBQUAD and COLORREF values.
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*/
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#define FlipColor(rgb) (RGB(GetBValue(rgb),GetGValue(rgb),GetRValue(rgb)))
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/*
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* The following enumeration defines the meaning of the palette entries
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* in the "buttons" image used to draw checkbox and radiobutton indicators.
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*/
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enum {
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PAL_CHECK = 0,
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PAL_TOP_OUTER = 1,
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PAL_BOTTOM_OUTER = 2,
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PAL_BOTTOM_INNER = 3,
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PAL_INTERIOR = 4,
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PAL_TOP_INNER = 5,
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PAL_BACKGROUND = 6
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};
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/*
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* Set to non-zero if this module is initialized.
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*/
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static int initialized = 0;
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/*
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* Variables for the cached information about the boxes bitmap.
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*/
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static BITMAPINFOHEADER *boxesPtr = NULL; /* Information about the bitmap. */
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static DWORD *boxesPalette = NULL; /* Pointer to color palette. */
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static LPSTR boxesBits = NULL; /* Pointer to bitmap data. */
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static DWORD boxHeight = 0, boxWidth = 0; /* Size of each sub-image. */
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/*
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* This variable holds the default border width for a button in string
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* form for use in a Tk_ConfigSpec.
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*/
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static char defWidth[8];
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/*
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* Declarations for functions defined in this file.
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*/
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static int ButtonBindProc _ANSI_ARGS_((ClientData clientData,
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Tcl_Interp *interp, XEvent *eventPtr,
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Tk_Window tkwin, KeySym keySym));
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static LRESULT CALLBACK ButtonProc _ANSI_ARGS_((HWND hwnd, UINT message,
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WPARAM wParam, LPARAM lParam));
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static DWORD ComputeStyle _ANSI_ARGS_((WinButton* butPtr));
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static Window CreateProc _ANSI_ARGS_((Tk_Window tkwin,
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Window parent, ClientData instanceData));
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static void InitBoxes _ANSI_ARGS_((void));
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static void UpdateButtonDefaults _ANSI_ARGS_((void));
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/*
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* The class procedure table for the button widgets.
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*/
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TkClassProcs tkpButtonProcs = {
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CreateProc, /* createProc. */
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TkButtonWorldChanged, /* geometryProc. */
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NULL /* modalProc. */
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};
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/*
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*----------------------------------------------------------------------
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*
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* InitBoxes --
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*
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* This function load the Tk 3d button bitmap. "buttons" is a 16
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* color bitmap that is laid out such that the top row contains
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* the 4 checkbox images, and the bottom row contains the radio
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* button images. Note that the bitmap is stored in bottom-up
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* format. Also, the first seven palette entries are used to
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* identify the different parts of the bitmaps so we can do the
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* appropriate color mappings based on the current button colors.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Loads the "buttons" resource.
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*
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*----------------------------------------------------------------------
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*/
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static void
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InitBoxes()
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{
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/*
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* For DLLs like Tk, the HINSTANCE is the same as the HMODULE.
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*/
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HMODULE module = (HINSTANCE) Tk_GetHINSTANCE();
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HRSRC hrsrc;
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HGLOBAL hblk;
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LPBITMAPINFOHEADER newBitmap;
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DWORD size;
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hrsrc = FindResource(module, "buttons", RT_BITMAP);
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if (hrsrc) {
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hblk = LoadResource(module, hrsrc);
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boxesPtr = (LPBITMAPINFOHEADER)LockResource(hblk);
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}
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/*
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* Copy the DIBitmap into writable memory.
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*/
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if (boxesPtr != NULL && !(boxesPtr->biWidth % 4)
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&& !(boxesPtr->biHeight % 2)) {
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size = boxesPtr->biSize + (1 << boxesPtr->biBitCount) * sizeof(RGBQUAD)
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+ boxesPtr->biSizeImage;
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newBitmap = (LPBITMAPINFOHEADER) ckalloc(size);
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memcpy(newBitmap, boxesPtr, size);
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boxesPtr = newBitmap;
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boxWidth = boxesPtr->biWidth / 4;
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boxHeight = boxesPtr->biHeight / 2;
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boxesPalette = (DWORD*) (((LPSTR)boxesPtr) + boxesPtr->biSize);
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boxesBits = ((LPSTR)boxesPalette)
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+ ((1 << boxesPtr->biBitCount) * sizeof(RGBQUAD));
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} else {
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boxesPtr = NULL;
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}
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}
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/*
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*----------------------------------------------------------------------
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*
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* UpdateButtonDefaults --
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*
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* This function retrieves the current system defaults for
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* the button widgets.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Updates the configuration defaults for buttons.
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*
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*----------------------------------------------------------------------
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*/
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void
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UpdateButtonDefaults()
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{
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Tk_ConfigSpec *specPtr;
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int width = GetSystemMetrics(SM_CXEDGE);
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if (width == 0) {
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width = 1;
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}
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sprintf(defWidth, "%d", width);
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for (specPtr = tkpButtonConfigSpecs; specPtr->type != TK_CONFIG_END;
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specPtr++) {
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if (specPtr->offset == Tk_Offset(TkButton, borderWidth)) {
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specPtr->defValue = defWidth;
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}
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}
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpCreateButton --
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*
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* Allocate a new TkButton structure.
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*
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* Results:
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* Returns a newly allocated TkButton structure.
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*
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* Side effects:
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* Registers an event handler for the widget.
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*
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*----------------------------------------------------------------------
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*/
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TkButton *
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TkpCreateButton(tkwin)
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Tk_Window tkwin;
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{
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WinButton *butPtr;
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if (!initialized) {
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UpdateButtonDefaults();
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initialized = 1;
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}
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butPtr = (WinButton *)ckalloc(sizeof(WinButton));
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butPtr->hwnd = NULL;
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return (TkButton *) butPtr;
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}
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/*
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*----------------------------------------------------------------------
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*
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* CreateProc --
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*
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* This function creates a new Button control, subclasses
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* the instance, and generates a new Window object.
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*
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* Results:
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* Returns the newly allocated Window object, or None on failure.
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*
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* Side effects:
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* Causes a new Button control to come into existence.
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*
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*----------------------------------------------------------------------
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*/
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static Window
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CreateProc(tkwin, parentWin, instanceData)
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Tk_Window tkwin; /* Token for window. */
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Window parentWin; /* Parent of new window. */
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ClientData instanceData; /* Button instance data. */
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{
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Window window;
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HWND parent;
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char *class;
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WinButton *butPtr = (WinButton *)instanceData;
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parent = Tk_GetHWND(parentWin);
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if (butPtr->info.type == TYPE_LABEL) {
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class = "STATIC";
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butPtr->style = SS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS;
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} else {
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class = "BUTTON";
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butPtr->style = BS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS;
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}
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butPtr->hwnd = CreateWindow(class, NULL, butPtr->style,
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Tk_X(tkwin), Tk_Y(tkwin), Tk_Width(tkwin), Tk_Height(tkwin),
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parent, NULL, Tk_GetHINSTANCE(), NULL);
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SetWindowPos(butPtr->hwnd, HWND_TOP, 0, 0, 0, 0,
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SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
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butPtr->oldProc = (WNDPROC)SetWindowLong(butPtr->hwnd, GWL_WNDPROC,
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(DWORD) ButtonProc);
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window = Tk_AttachHWND(tkwin, butPtr->hwnd);
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return window;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpDestroyButton --
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*
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* Free data structures associated with the button control.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Restores the default control state.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpDestroyButton(butPtr)
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TkButton *butPtr;
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{
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WinButton *winButPtr = (WinButton *)butPtr;
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HWND hwnd = winButPtr->hwnd;
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if (hwnd) {
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SetWindowLong(hwnd, GWL_WNDPROC, (DWORD) winButPtr->oldProc);
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}
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpDisplayButton --
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*
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* This procedure is invoked to display a button widget. It is
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* normally invoked as an idle handler.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Information appears on the screen. The REDRAW_PENDING flag
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* is cleared.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpDisplayButton(clientData)
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ClientData clientData; /* Information about widget. */
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{
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TkWinDCState state;
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HDC dc;
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register TkButton *butPtr = (TkButton *) clientData;
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GC gc;
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Tk_3DBorder border;
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Pixmap pixmap;
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int x = 0; /* Initialization only needed to stop
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* compiler warning. */
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int y, relief;
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register Tk_Window tkwin = butPtr->tkwin;
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int width, height;
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int defaultWidth; /* Width of default ring. */
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int offset; /* 0 means this is a label widget. 1 means
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* it is a flavor of button, so we offset
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* the text to make the button appear to
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* move up and down as the relief changes. */
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butPtr->flags &= ~REDRAW_PENDING;
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if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
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return;
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}
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border = butPtr->normalBorder;
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if ((butPtr->state == tkDisabledUid) && (butPtr->disabledFg != NULL)) {
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gc = butPtr->disabledGC;
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} else if ((butPtr->state == tkActiveUid)
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&& !Tk_StrictMotif(butPtr->tkwin)) {
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gc = butPtr->activeTextGC;
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border = butPtr->activeBorder;
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} else {
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gc = butPtr->normalTextGC;
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}
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if ((butPtr->flags & SELECTED) && (butPtr->state != tkActiveUid)
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&& (butPtr->selectBorder != NULL) && !butPtr->indicatorOn) {
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border = butPtr->selectBorder;
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}
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/*
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* Override the relief specified for the button if this is a
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* checkbutton or radiobutton and there's no indicator.
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*/
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relief = butPtr->relief;
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if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) {
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relief = (butPtr->flags & SELECTED) ? TK_RELIEF_SUNKEN
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: TK_RELIEF_RAISED;
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}
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/*
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* Compute width of default ring and offset for pushed buttons.
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*/
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if (butPtr->type == TYPE_BUTTON) {
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defaultWidth = ((butPtr->defaultState == tkActiveUid)
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? butPtr->highlightWidth : 0);
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offset = 1;
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} else {
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defaultWidth = 0;
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if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) {
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offset = 1;
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} else {
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offset = 0;
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}
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}
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/*
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* In order to avoid screen flashes, this procedure redraws
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* the button in a pixmap, then copies the pixmap to the
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* screen in a single operation. This means that there's no
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* point in time where the on-sreen image has been cleared.
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*/
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pixmap = Tk_GetPixmap(butPtr->display, Tk_WindowId(tkwin),
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Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
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Tk_Fill3DRectangle(tkwin, pixmap, border, 0, 0, Tk_Width(tkwin),
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Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
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/*
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* Display image or bitmap or text for button.
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*/
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if (butPtr->image != None) {
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Tk_SizeOfImage(butPtr->image, &width, &height);
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imageOrBitmap:
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TkComputeAnchor(butPtr->anchor, tkwin, 0, 0,
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butPtr->indicatorSpace + width, height, &x, &y);
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x += butPtr->indicatorSpace;
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if (relief == TK_RELIEF_SUNKEN) {
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x += offset;
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y += offset;
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}
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if (butPtr->image != NULL) {
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if ((butPtr->selectImage != NULL) && (butPtr->flags & SELECTED)) {
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Tk_RedrawImage(butPtr->selectImage, 0, 0, width, height,
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pixmap, x, y);
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} else {
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Tk_RedrawImage(butPtr->image, 0, 0, width, height, pixmap,
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x, y);
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}
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} else {
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XSetClipOrigin(butPtr->display, gc, x, y);
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XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, gc, 0, 0,
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(unsigned int) width, (unsigned int) height, x, y, 1);
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XSetClipOrigin(butPtr->display, gc, 0, 0);
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}
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y += height/2;
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} else if (butPtr->bitmap != None) {
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Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
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goto imageOrBitmap;
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} else {
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RECT rect;
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TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY,
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butPtr->indicatorSpace + butPtr->textWidth, butPtr->textHeight,
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&x, &y);
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x += butPtr->indicatorSpace;
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if (relief == TK_RELIEF_SUNKEN) {
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x += offset;
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y += offset;
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}
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Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout,
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x, y, 0, -1);
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Tk_UnderlineTextLayout(butPtr->display, pixmap, gc,
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butPtr->textLayout, x, y, butPtr->underline);
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/*
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* Draw the focus ring. If this is a push button then we need to put
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* it around the inner edge of the border, otherwise we put it around
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* the text.
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*/
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if (butPtr->flags & GOT_FOCUS && butPtr->type != TYPE_LABEL) {
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dc = TkWinGetDrawableDC(butPtr->display, pixmap, &state);
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if (butPtr->type == TYPE_BUTTON || !butPtr->indicatorOn) {
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rect.top = butPtr->borderWidth + 1 + defaultWidth;
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rect.left = rect.top;
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rect.right = Tk_Width(tkwin) - rect.left;
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rect.bottom = Tk_Height(tkwin) - rect.top;
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} else {
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rect.top = y-2;
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rect.left = x-2;
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rect.right = x+butPtr->textWidth + 1;
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rect.bottom = y+butPtr->textHeight + 1;
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}
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SetTextColor(dc, gc->foreground);
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SetBkColor(dc, gc->background);
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DrawFocusRect(dc, &rect);
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TkWinReleaseDrawableDC(pixmap, dc, &state);
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}
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y += butPtr->textHeight/2;
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}
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/*
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* Draw the indicator for check buttons and radio buttons. At this
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* point x and y refer to the top-left corner of the text or image
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* or bitmap.
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*/
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if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn
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&& boxesPtr) {
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int xSrc, ySrc;
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x -= butPtr->indicatorSpace;
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y -= butPtr->indicatorDiameter / 2;
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xSrc = (butPtr->flags & SELECTED) ? boxWidth : 0;
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if (butPtr->state == tkActiveUid) {
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xSrc += boxWidth*2;
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}
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ySrc = (butPtr->type == TYPE_RADIO_BUTTON) ? 0 : boxHeight;
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/*
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* Update the palette in the boxes bitmap to reflect the current
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* button colors. Note that this code relies on the layout of the
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* bitmap's palette. Also, all of the colors used to draw the
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* bitmap must be in the palette that is selected into the DC of
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* the offscreen pixmap. This requires that the static colors
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* be placed into the palette.
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*/
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boxesPalette[PAL_CHECK] = FlipColor(gc->foreground);
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boxesPalette[PAL_TOP_OUTER] = FlipColor(TkWinGetBorderPixels(tkwin,
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border, TK_3D_DARK_GC));
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boxesPalette[PAL_TOP_INNER] = FlipColor(TkWinGetBorderPixels(tkwin,
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border, TK_3D_DARK2));
|
||
boxesPalette[PAL_BOTTOM_INNER] = FlipColor(TkWinGetBorderPixels(tkwin,
|
||
border, TK_3D_LIGHT2));
|
||
boxesPalette[PAL_BOTTOM_OUTER] = FlipColor(TkWinGetBorderPixels(tkwin,
|
||
border, TK_3D_LIGHT_GC));
|
||
if (butPtr->state == tkDisabledUid) {
|
||
boxesPalette[PAL_INTERIOR] = FlipColor(TkWinGetBorderPixels(tkwin,
|
||
border, TK_3D_LIGHT2));
|
||
} else if (butPtr->selectBorder != NULL) {
|
||
boxesPalette[PAL_INTERIOR] = FlipColor(TkWinGetBorderPixels(tkwin,
|
||
butPtr->selectBorder, TK_3D_FLAT_GC));
|
||
} else {
|
||
boxesPalette[PAL_INTERIOR] = FlipColor(GetSysColor(COLOR_WINDOW));
|
||
}
|
||
boxesPalette[PAL_BACKGROUND] = FlipColor(TkWinGetBorderPixels(tkwin,
|
||
border, TK_3D_FLAT_GC));
|
||
|
||
dc = TkWinGetDrawableDC(butPtr->display, pixmap, &state);
|
||
StretchDIBits(dc, x, y, boxWidth, boxHeight, xSrc, ySrc,
|
||
boxWidth, boxHeight, boxesBits, (LPBITMAPINFO)boxesPtr,
|
||
DIB_RGB_COLORS, SRCCOPY);
|
||
TkWinReleaseDrawableDC(pixmap, dc, &state);
|
||
}
|
||
|
||
/*
|
||
* If the button is disabled with a stipple rather than a special
|
||
* foreground color, generate the stippled effect. If the widget
|
||
* is selected and we use a different background color when selected,
|
||
* must temporarily modify the GC.
|
||
*/
|
||
|
||
if ((butPtr->state == tkDisabledUid)
|
||
&& ((butPtr->disabledFg == NULL) || (butPtr->image != NULL))) {
|
||
if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn
|
||
&& (butPtr->selectBorder != NULL)) {
|
||
XSetForeground(butPtr->display, butPtr->disabledGC,
|
||
Tk_3DBorderColor(butPtr->selectBorder)->pixel);
|
||
}
|
||
XFillRectangle(butPtr->display, pixmap, butPtr->disabledGC,
|
||
butPtr->inset, butPtr->inset,
|
||
(unsigned) (Tk_Width(tkwin) - 2*butPtr->inset),
|
||
(unsigned) (Tk_Height(tkwin) - 2*butPtr->inset));
|
||
if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn
|
||
&& (butPtr->selectBorder != NULL)) {
|
||
XSetForeground(butPtr->display, butPtr->disabledGC,
|
||
Tk_3DBorderColor(butPtr->normalBorder)->pixel);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Draw the border and traversal highlight last. This way, if the
|
||
* button's contents overflow they'll be covered up by the border.
|
||
*/
|
||
|
||
if (relief != TK_RELIEF_FLAT) {
|
||
Tk_Draw3DRectangle(tkwin, pixmap, border,
|
||
defaultWidth, defaultWidth,
|
||
Tk_Width(tkwin) - 2*defaultWidth,
|
||
Tk_Height(tkwin) - 2*defaultWidth,
|
||
butPtr->borderWidth, relief);
|
||
}
|
||
if (defaultWidth != 0) {
|
||
dc = TkWinGetDrawableDC(butPtr->display, pixmap, &state);
|
||
TkWinFillRect(dc, 0, 0, Tk_Width(tkwin), defaultWidth,
|
||
butPtr->highlightColorPtr->pixel);
|
||
TkWinFillRect(dc, 0, 0, defaultWidth, Tk_Height(tkwin),
|
||
butPtr->highlightColorPtr->pixel);
|
||
TkWinFillRect(dc, 0, Tk_Height(tkwin) - defaultWidth,
|
||
Tk_Width(tkwin), defaultWidth,
|
||
butPtr->highlightColorPtr->pixel);
|
||
TkWinFillRect(dc, Tk_Width(tkwin) - defaultWidth, 0,
|
||
defaultWidth, Tk_Height(tkwin),
|
||
butPtr->highlightColorPtr->pixel);
|
||
TkWinReleaseDrawableDC(pixmap, dc, &state);
|
||
}
|
||
|
||
/*
|
||
* Copy the information from the off-screen pixmap onto the screen,
|
||
* then delete the pixmap.
|
||
*/
|
||
|
||
XCopyArea(butPtr->display, pixmap, Tk_WindowId(tkwin),
|
||
butPtr->copyGC, 0, 0, (unsigned) Tk_Width(tkwin),
|
||
(unsigned) Tk_Height(tkwin), 0, 0);
|
||
Tk_FreePixmap(butPtr->display, pixmap);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TkpComputeButtonGeometry --
|
||
*
|
||
* After changes in a button's text or bitmap, this procedure
|
||
* recomputes the button's geometry and passes this information
|
||
* along to the geometry manager for the window.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The button's window may change size.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
void
|
||
TkpComputeButtonGeometry(butPtr)
|
||
register TkButton *butPtr; /* Button whose geometry may have changed. */
|
||
{
|
||
int width, height, avgWidth;
|
||
Tk_FontMetrics fm;
|
||
|
||
if (butPtr->highlightWidth < 0) {
|
||
butPtr->highlightWidth = 0;
|
||
}
|
||
butPtr->inset = butPtr->highlightWidth + butPtr->borderWidth;
|
||
butPtr->indicatorSpace = 0;
|
||
|
||
if (!boxesPtr) {
|
||
InitBoxes();
|
||
}
|
||
|
||
if (butPtr->image != NULL) {
|
||
Tk_SizeOfImage(butPtr->image, &width, &height);
|
||
imageOrBitmap:
|
||
if (butPtr->width > 0) {
|
||
width = butPtr->width;
|
||
}
|
||
if (butPtr->height > 0) {
|
||
height = butPtr->height;
|
||
}
|
||
if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
|
||
butPtr->indicatorSpace = boxWidth * 2;
|
||
butPtr->indicatorDiameter = boxHeight;
|
||
}
|
||
} else if (butPtr->bitmap != None) {
|
||
Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height);
|
||
goto imageOrBitmap;
|
||
} else {
|
||
Tk_FreeTextLayout(butPtr->textLayout);
|
||
butPtr->textLayout = Tk_ComputeTextLayout(butPtr->tkfont,
|
||
butPtr->text, -1, butPtr->wrapLength, butPtr->justify, 0,
|
||
&butPtr->textWidth, &butPtr->textHeight);
|
||
|
||
width = butPtr->textWidth;
|
||
height = butPtr->textHeight;
|
||
avgWidth = Tk_TextWidth(butPtr->tkfont, "0", 1);
|
||
Tk_GetFontMetrics(butPtr->tkfont, &fm);
|
||
|
||
if (butPtr->width > 0) {
|
||
width = butPtr->width * avgWidth;
|
||
}
|
||
if (butPtr->height > 0) {
|
||
height = butPtr->height * fm.linespace;
|
||
}
|
||
|
||
if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn) {
|
||
butPtr->indicatorDiameter = boxHeight;
|
||
butPtr->indicatorSpace = butPtr->indicatorDiameter + avgWidth;
|
||
}
|
||
|
||
/*
|
||
* Increase the inset to allow for the focus ring.
|
||
*/
|
||
|
||
if (butPtr->type != TYPE_LABEL) {
|
||
butPtr->inset += 3;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* When issuing the geometry request, add extra space for the indicator,
|
||
* if any, and for the border and padding, plus an extra pixel so the
|
||
* display can be offset by 1 pixel in either direction for the raised
|
||
* or lowered effect.
|
||
*/
|
||
|
||
if ((butPtr->image == NULL) && (butPtr->bitmap == None)) {
|
||
width += 2*butPtr->padX;
|
||
height += 2*butPtr->padY;
|
||
}
|
||
if ((butPtr->type == TYPE_BUTTON)
|
||
|| ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn)) {
|
||
width += 1;
|
||
height += 1;
|
||
}
|
||
Tk_GeometryRequest(butPtr->tkwin, (int) (width + butPtr->indicatorSpace
|
||
+ 2*butPtr->inset), (int) (height + 2*butPtr->inset));
|
||
Tk_SetInternalBorder(butPtr->tkwin, butPtr->inset);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* ButtonProc --
|
||
*
|
||
* This function is call by Windows whenever an event occurs on
|
||
* a button control created by Tk.
|
||
*
|
||
* Results:
|
||
* Standard Windows return value.
|
||
*
|
||
* Side effects:
|
||
* May generate events.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static LRESULT CALLBACK
|
||
ButtonProc(hwnd, message, wParam, lParam)
|
||
HWND hwnd;
|
||
UINT message;
|
||
WPARAM wParam;
|
||
LPARAM lParam;
|
||
{
|
||
LRESULT result;
|
||
WinButton *butPtr;
|
||
Tk_Window tkwin = Tk_HWNDToWindow(hwnd);
|
||
|
||
if (tkwin == NULL) {
|
||
panic("ButtonProc called on an invalid HWND");
|
||
}
|
||
butPtr = (WinButton *)((TkWindow*)tkwin)->instanceData;
|
||
|
||
switch(message) {
|
||
case WM_ERASEBKGND:
|
||
return 0;
|
||
|
||
case BM_GETCHECK:
|
||
if (((butPtr->info.type == TYPE_CHECK_BUTTON)
|
||
|| (butPtr->info.type == TYPE_RADIO_BUTTON))
|
||
&& butPtr->info.indicatorOn) {
|
||
return (butPtr->info.flags & SELECTED)
|
||
? BST_CHECKED : BST_UNCHECKED;
|
||
}
|
||
return 0;
|
||
|
||
case BM_GETSTATE: {
|
||
DWORD state = 0;
|
||
if (((butPtr->info.type == TYPE_CHECK_BUTTON)
|
||
|| (butPtr->info.type == TYPE_RADIO_BUTTON))
|
||
&& butPtr->info.indicatorOn) {
|
||
state = (butPtr->info.flags & SELECTED)
|
||
? BST_CHECKED : BST_UNCHECKED;
|
||
}
|
||
if (butPtr->info.flags & GOT_FOCUS) {
|
||
state |= BST_FOCUS;
|
||
}
|
||
return state;
|
||
}
|
||
case WM_ENABLE:
|
||
break;
|
||
|
||
case WM_PAINT: {
|
||
PAINTSTRUCT ps;
|
||
BeginPaint(hwnd, &ps);
|
||
EndPaint(hwnd, &ps);
|
||
TkpDisplayButton((ClientData)butPtr);
|
||
return 0;
|
||
}
|
||
case BN_CLICKED: {
|
||
int code;
|
||
Tcl_Interp *interp = butPtr->info.interp;
|
||
if (butPtr->info.state != tkDisabledUid) {
|
||
Tcl_Preserve((ClientData)interp);
|
||
code = TkInvokeButton((TkButton*)butPtr);
|
||
if (code != TCL_OK && code != TCL_CONTINUE
|
||
&& code != TCL_BREAK) {
|
||
Tcl_AddErrorInfo(interp, "\n (button invoke)");
|
||
Tcl_BackgroundError(interp);
|
||
}
|
||
Tcl_Release((ClientData)interp);
|
||
}
|
||
Tcl_ServiceAll();
|
||
return 0;
|
||
}
|
||
|
||
default:
|
||
if (Tk_TranslateWinEvent(hwnd, message, wParam, lParam, &result)) {
|
||
return result;
|
||
}
|
||
}
|
||
return DefWindowProc(hwnd, message, wParam, lParam);
|
||
}
|