/* * tkWinButton.c -- * * This file implements the Windows specific portion of the button * widgets. * * Copyright (c) 1996-1998 by Sun Microsystems, Inc. * * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. */ #define OEMRESOURCE #include "tkWinInt.h" #include "tkButton.h" /* * These macros define the base style flags for the different button types. */ #define LABEL_STYLE (BS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS) #define PUSH_STYLE (LABEL_STYLE | BS_PUSHBUTTON) #define CHECK_STYLE (LABEL_STYLE | BS_CHECKBOX) #define RADIO_STYLE (LABEL_STYLE | BS_RADIOBUTTON) /* * Declaration of Windows specific button structure. */ typedef struct WinButton { TkButton info; /* Generic button info. */ WNDPROC oldProc; /* Old window procedure. */ HWND hwnd; /* Current window handle. */ Pixmap pixmap; /* Bitmap for rendering the button. */ DWORD style; /* Window style flags. */ } WinButton; /* * The following macro reverses the order of RGB bytes to convert between * RGBQUAD and COLORREF values. */ #define FlipColor(rgb) (RGB(GetBValue(rgb),GetGValue(rgb),GetRValue(rgb))) /* * The following enumeration defines the meaning of the palette entries in the * "buttons" image used to draw checkbox and radiobutton indicators. */ enum { PAL_CHECK = 0, PAL_TOP_OUTER = 1, PAL_BOTTOM_OUTER = 2, PAL_BOTTOM_INNER = 3, PAL_INTERIOR = 4, PAL_TOP_INNER = 5, PAL_BACKGROUND = 6 }; /* * Cached information about the boxes bitmap, and the default border width for * a button in string form for use in Tk_OptionSpec for the various button * widget classes. */ typedef struct ThreadSpecificData { BITMAPINFOHEADER *boxesPtr; /* Information about the bitmap. */ DWORD *boxesPalette; /* Pointer to color palette. */ LPSTR boxesBits; /* Pointer to bitmap data. */ DWORD boxHeight; /* Height of each sub-image. */ DWORD boxWidth; /* Width of each sub-image. */ } ThreadSpecificData; static Tcl_ThreadDataKey dataKey; /* * Declarations for functions defined in this file. */ static LRESULT CALLBACK ButtonProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam); static Window CreateProc(Tk_Window tkwin, Window parent, ClientData instanceData); static void InitBoxes(void); /* * The class procedure table for the button widgets. */ const Tk_ClassProcs tkpButtonProcs = { sizeof(Tk_ClassProcs), /* size */ TkButtonWorldChanged, /* worldChangedProc */ CreateProc, /* createProc */ NULL /* modalProc */ }; /* *---------------------------------------------------------------------- * * InitBoxes -- * * This function load the Tk 3d button bitmap. "buttons" is a 16 color * bitmap that is laid out such that the top row contains the 4 checkbox * images, and the bottom row contains the radio button images. Note that * the bitmap is stored in bottom-up format. Also, the first seven * palette entries are used to identify the different parts of the * bitmaps so we can do the appropriate color mappings based on the * current button colors. * * Results: * None. * * Side effects: * Loads the "buttons" resource. * *---------------------------------------------------------------------- */ static void InitBoxes(void) { /* * For DLLs like Tk, the HINSTANCE is the same as the HMODULE. */ HMODULE module = (HINSTANCE) Tk_GetHINSTANCE(); HRSRC hrsrc; HGLOBAL hblk; LPBITMAPINFOHEADER newBitmap; DWORD size; ThreadSpecificData *tsdPtr = (ThreadSpecificData *) Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); hrsrc = FindResource(module, TEXT("buttons"), RT_BITMAP); if (hrsrc == NULL) { Tcl_Panic("FindResource() failed for buttons bitmap resource, " "resources in tk_base.rc must be linked into Tk dll or static executable"); } else { hblk = LoadResource(module, hrsrc); tsdPtr->boxesPtr = (LPBITMAPINFOHEADER)LockResource(hblk); } /* * Copy the DIBitmap into writable memory. */ if (tsdPtr->boxesPtr != NULL && !(tsdPtr->boxesPtr->biWidth % 4) && !(tsdPtr->boxesPtr->biHeight % 2)) { size = tsdPtr->boxesPtr->biSize + (1 << tsdPtr->boxesPtr->biBitCount) * sizeof(RGBQUAD) + tsdPtr->boxesPtr->biSizeImage; newBitmap = ckalloc(size); memcpy(newBitmap, tsdPtr->boxesPtr, size); tsdPtr->boxesPtr = newBitmap; tsdPtr->boxWidth = tsdPtr->boxesPtr->biWidth / 4; tsdPtr->boxHeight = tsdPtr->boxesPtr->biHeight / 2; tsdPtr->boxesPalette = (DWORD*) (((LPSTR) tsdPtr->boxesPtr) + tsdPtr->boxesPtr->biSize); tsdPtr->boxesBits = ((LPSTR) tsdPtr->boxesPalette) + ((1 << tsdPtr->boxesPtr->biBitCount) * sizeof(RGBQUAD)); } else { tsdPtr->boxesPtr = NULL; } } /* *---------------------------------------------------------------------- * * TkpButtonSetDefaults -- * * This procedure is invoked before option tables are created for * buttons. It modifies some of the default values to match the current * values defined for this platform. * * Results: * Some of the default values in *specPtr are modified. * * Side effects: * Updates some of. * *---------------------------------------------------------------------- */ void TkpButtonSetDefaults() { int width = GetSystemMetrics(SM_CXEDGE); if (width > 0) { sprintf(tkDefButtonBorderWidth, "%d", width); } } /* *---------------------------------------------------------------------- * * TkpCreateButton -- * * Allocate a new TkButton structure. * * Results: * Returns a newly allocated TkButton structure. * * Side effects: * Registers an event handler for the widget. * *---------------------------------------------------------------------- */ TkButton * TkpCreateButton( Tk_Window tkwin) { WinButton *butPtr; butPtr = ckalloc(sizeof(WinButton)); butPtr->hwnd = NULL; return (TkButton *) butPtr; } /* *---------------------------------------------------------------------- * * CreateProc -- * * This function creates a new Button control, subclasses the instance, * and generates a new Window object. * * Results: * Returns the newly allocated Window object, or None on failure. * * Side effects: * Causes a new Button control to come into existence. * *---------------------------------------------------------------------- */ static Window CreateProc( Tk_Window tkwin, /* Token for window. */ Window parentWin, /* Parent of new window. */ ClientData instanceData) /* Button instance data. */ { Window window; HWND parent; const TCHAR *class; WinButton *butPtr = (WinButton *)instanceData; parent = Tk_GetHWND(parentWin); if (butPtr->info.type == TYPE_LABEL) { class = TEXT("STATIC"); butPtr->style = SS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS; } else { class = TEXT("BUTTON"); butPtr->style = BS_OWNERDRAW | WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS; } butPtr->hwnd = CreateWindow(class, NULL, butPtr->style, Tk_X(tkwin), Tk_Y(tkwin), Tk_Width(tkwin), Tk_Height(tkwin), parent, NULL, Tk_GetHINSTANCE(), NULL); SetWindowPos(butPtr->hwnd, HWND_TOP, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE); butPtr->oldProc = (WNDPROC)SetWindowLongPtr(butPtr->hwnd, GWLP_WNDPROC, (LONG_PTR) ButtonProc); window = Tk_AttachHWND(tkwin, butPtr->hwnd); return window; } /* *---------------------------------------------------------------------- * * TkpDestroyButton -- * * Free data structures associated with the button control. * * Results: * None. * * Side effects: * Restores the default control state. * *---------------------------------------------------------------------- */ void TkpDestroyButton( TkButton *butPtr) { WinButton *winButPtr = (WinButton *)butPtr; HWND hwnd = winButPtr->hwnd; if (hwnd) { SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR) winButPtr->oldProc); } } /* *---------------------------------------------------------------------- * * TkpDisplayButton -- * * This procedure is invoked to display a button widget. It is normally * invoked as an idle handler. * * Results: * None. * * Side effects: * Information appears on the screen. The REDRAW_PENDING flag is cleared. * *---------------------------------------------------------------------- */ void TkpDisplayButton( ClientData clientData) /* Information about widget. */ { TkWinDCState state; HDC dc; register TkButton *butPtr = (TkButton *) clientData; GC gc; Tk_3DBorder border; Pixmap pixmap; int x = 0; /* Initialization only needed to stop compiler * warning. */ int y, relief; register Tk_Window tkwin = butPtr->tkwin; int width = 0, height = 0, haveImage = 0, haveText = 0, drawRing = 0; RECT rect; int defaultWidth; /* Width of default ring. */ int offset; /* 0 means this is a label widget. 1 means it * is a flavor of button, so we offset the * text to make the button appear to move up * and down as the relief changes. */ int textXOffset = 0, textYOffset = 0; /* Text offsets for use with compound buttons * and focus ring. */ int imageWidth, imageHeight; int imageXOffset = 0, imageYOffset = 0; /* Image information that will be used to * restrict disabled pixmap as well. */ DWORD *boxesPalette; ThreadSpecificData *tsdPtr = (ThreadSpecificData *) Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); boxesPalette= tsdPtr->boxesPalette; butPtr->flags &= ~REDRAW_PENDING; if ((butPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) { return; } border = butPtr->normalBorder; if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg != NULL)) { gc = butPtr->disabledGC; } else if ((butPtr->state == STATE_ACTIVE) && !Tk_StrictMotif(butPtr->tkwin)) { gc = butPtr->activeTextGC; border = butPtr->activeBorder; } else { gc = butPtr->normalTextGC; } if ((butPtr->flags & SELECTED) && (butPtr->state != STATE_ACTIVE) && (butPtr->selectBorder != NULL) && !butPtr->indicatorOn) { border = butPtr->selectBorder; } /* * Override the relief specified for the button if this is a checkbutton * or radiobutton and there's no indicator. The new relief is as follows: * If the button is select --> "sunken" * If relief==overrelief --> relief * Otherwise --> overrelief * * The effect we are trying to achieve is as follows: * * value mouse-over? --> relief * ------- ------------ -------- * off no flat * off yes raised * on no sunken * on yes sunken * * This is accomplished by configuring the checkbutton or radiobutton like * this: * * -indicatoron 0 -overrelief raised -offrelief flat * * Bindings (see library/button.tcl) will copy the -overrelief into * -relief on mouseover. Hence, we can tell if we are in mouse-over by * comparing relief against overRelief. This is an aweful kludge, but it * gives use the desired behavior while keeping the code backwards * compatible. */ relief = butPtr->relief; if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) { if (butPtr->flags & SELECTED) { relief = TK_RELIEF_SUNKEN; } else if (butPtr->overRelief != relief) { relief = butPtr->offRelief; } } /* * Compute width of default ring and offset for pushed buttons. */ if (butPtr->type == TYPE_BUTTON) { defaultWidth = ((butPtr->defaultState == DEFAULT_ACTIVE) ? butPtr->highlightWidth : 0); offset = 1; } else { defaultWidth = 0; if ((butPtr->type >= TYPE_CHECK_BUTTON) && !butPtr->indicatorOn) { offset = 1; } else { offset = 0; } } /* * In order to avoid screen flashes, this procedure redraws the button in * a pixmap, then copies the pixmap to the screen in a single operation. * This means that there's no point in time where the on-sreen image has * been cleared. */ pixmap = Tk_GetPixmap(butPtr->display, Tk_WindowId(tkwin), Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin)); Tk_Fill3DRectangle(tkwin, pixmap, border, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT); /* * Display image or bitmap or text for button. */ if (butPtr->image != None) { Tk_SizeOfImage(butPtr->image, &width, &height); haveImage = 1; } else if (butPtr->bitmap != None) { Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &width, &height); haveImage = 1; } imageWidth = width; imageHeight = height; haveText = (butPtr->textWidth != 0 && butPtr->textHeight != 0); if (butPtr->compound != COMPOUND_NONE && haveImage && haveText) { int fullWidth = 0, fullHeight = 0; switch ((enum compound) butPtr->compound) { case COMPOUND_TOP: case COMPOUND_BOTTOM: /* * Image is above or below text. */ if (butPtr->compound == COMPOUND_TOP) { textYOffset = height + butPtr->padY; } else { imageYOffset = butPtr->textHeight + butPtr->padY; } fullHeight = height + butPtr->textHeight + butPtr->padY; fullWidth = (width > butPtr->textWidth ? width : butPtr->textWidth); textXOffset = (fullWidth - butPtr->textWidth)/2; imageXOffset = (fullWidth - width)/2; break; case COMPOUND_LEFT: case COMPOUND_RIGHT: /* * Image is left or right of text. */ if (butPtr->compound == COMPOUND_LEFT) { textXOffset = width + butPtr->padX; } else { imageXOffset = butPtr->textWidth + butPtr->padX; } fullWidth = butPtr->textWidth + butPtr->padX + width; fullHeight = (height > butPtr->textHeight ? height : butPtr->textHeight); textYOffset = (fullHeight - butPtr->textHeight)/2; imageYOffset = (fullHeight - height)/2; break; case COMPOUND_CENTER: /* * Image and text are superimposed. */ fullWidth = (width > butPtr->textWidth ? width : butPtr->textWidth); fullHeight = (height > butPtr->textHeight ? height : butPtr->textHeight); textXOffset = (fullWidth - butPtr->textWidth)/2; imageXOffset = (fullWidth - width)/2; textYOffset = (fullHeight - butPtr->textHeight)/2; imageYOffset = (fullHeight - height)/2; break; case COMPOUND_NONE: break; } TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY, butPtr->indicatorSpace + fullWidth, fullHeight, &x, &y); x += butPtr->indicatorSpace; if (relief == TK_RELIEF_SUNKEN) { x += offset; y += offset; } imageXOffset += x; imageYOffset += y; if (butPtr->image != NULL) { if ((butPtr->selectImage != NULL) && (butPtr->flags & SELECTED)) { Tk_RedrawImage(butPtr->selectImage, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else if ((butPtr->tristateImage != NULL) && (butPtr->flags & TRISTATED)) { Tk_RedrawImage(butPtr->tristateImage, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else { Tk_RedrawImage(butPtr->image, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } } else { XSetClipOrigin(butPtr->display, gc, imageXOffset, imageYOffset); XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, gc, 0, 0, (unsigned int) width, (unsigned int) height, imageXOffset, imageYOffset, 1); XSetClipOrigin(butPtr->display, gc, 0, 0); } if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg != NULL)) { COLORREF oldFgColor = gc->foreground; if (gc->background == GetSysColor(COLOR_BTNFACE)) { gc->foreground = GetSysColor(COLOR_3DHILIGHT); Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x + textXOffset + 1, y + textYOffset + 1, 0, -1); Tk_UnderlineTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x + textXOffset + 1, y + textYOffset + 1, butPtr->underline); gc->foreground = oldFgColor; } } Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x + textXOffset, y + textYOffset, 0, -1); Tk_UnderlineTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x + textXOffset, y + textYOffset, butPtr->underline); height = fullHeight; drawRing = 1; } else { if (haveImage) { TkComputeAnchor(butPtr->anchor, tkwin, 0, 0, butPtr->indicatorSpace + width, height, &x, &y); x += butPtr->indicatorSpace; if (relief == TK_RELIEF_SUNKEN) { x += offset; y += offset; } imageXOffset += x; imageYOffset += y; if (butPtr->image != NULL) { if ((butPtr->selectImage != NULL) && (butPtr->flags & SELECTED)) { Tk_RedrawImage(butPtr->selectImage, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else if ((butPtr->tristateImage != NULL) && (butPtr->flags & TRISTATED)) { Tk_RedrawImage(butPtr->tristateImage, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } else { Tk_RedrawImage(butPtr->image, 0, 0, width, height, pixmap, imageXOffset, imageYOffset); } } else { XSetClipOrigin(butPtr->display, gc, x, y); XCopyPlane(butPtr->display, butPtr->bitmap, pixmap, gc, 0, 0, (unsigned int) width, (unsigned int) height, x, y, 1); XSetClipOrigin(butPtr->display, gc, 0, 0); } } else { TkComputeAnchor(butPtr->anchor, tkwin, butPtr->padX, butPtr->padY, butPtr->indicatorSpace + butPtr->textWidth, butPtr->textHeight, &x, &y); x += butPtr->indicatorSpace; if (relief == TK_RELIEF_SUNKEN) { x += offset; y += offset; } if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg != NULL)) { COLORREF oldFgColor = gc->foreground; if (gc->background == GetSysColor(COLOR_BTNFACE)) { gc->foreground = GetSysColor(COLOR_3DHILIGHT); Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x + 1, y + 1, 0, -1); Tk_UnderlineTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x + 1, y + 1, butPtr->underline); gc->foreground = oldFgColor; } } Tk_DrawTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x, y, 0, -1); Tk_UnderlineTextLayout(butPtr->display, pixmap, gc, butPtr->textLayout, x, y, butPtr->underline); height = butPtr->textHeight; drawRing = 1; } } /* * Draw the focus ring. If this is a push button then we need to put it * around the inner edge of the border, otherwise we put it around the * text. The text offsets are only non-zero when this is a compound * button. */ if (drawRing && butPtr->flags & GOT_FOCUS && butPtr->type != TYPE_LABEL) { dc = TkWinGetDrawableDC(butPtr->display, pixmap, &state); if (butPtr->type == TYPE_BUTTON || !butPtr->indicatorOn) { rect.top = butPtr->borderWidth + 1 + defaultWidth; rect.left = rect.top; rect.right = Tk_Width(tkwin) - rect.left; rect.bottom = Tk_Height(tkwin) - rect.top; } else { rect.top = y-1 + textYOffset; rect.left = x-1 + textXOffset; rect.right = x+butPtr->textWidth + 1 + textXOffset; rect.bottom = y+butPtr->textHeight + 2 + textYOffset; } SetTextColor(dc, gc->foreground); SetBkColor(dc, gc->background); DrawFocusRect(dc, &rect); TkWinReleaseDrawableDC(pixmap, dc, &state); } y += height/2; /* * Draw the indicator for check buttons and radio buttons. At this point x * and y refer to the top-left corner of the text or image or bitmap. */ if ((butPtr->type >= TYPE_CHECK_BUTTON) && butPtr->indicatorOn && tsdPtr->boxesPtr) { int xSrc, ySrc; x -= butPtr->indicatorSpace; y -= butPtr->indicatorDiameter / 2; xSrc = (butPtr->flags & (SELECTED|TRISTATED)) ? tsdPtr->boxWidth : 0; if (butPtr->state == STATE_ACTIVE) { xSrc += tsdPtr->boxWidth*2; } ySrc = (butPtr->type == TYPE_RADIO_BUTTON) ? 0 : tsdPtr->boxHeight; /* * Update the palette in the boxes bitmap to reflect the current * button colors. Note that this code relies on the layout of the * bitmap's palette. Also, all of the colors used to draw the bitmap * must be in the palette that is selected into the DC of the * offscreen pixmap. This requires that the static colors be placed * into the palette. */ if ((butPtr->state == STATE_DISABLED) && (butPtr->disabledFg == NULL)) { boxesPalette[PAL_CHECK] = FlipColor(TkWinGetBorderPixels(tkwin, border, TK_3D_DARK_GC)); } else { boxesPalette[PAL_CHECK] = FlipColor(gc->foreground); } boxesPalette[PAL_TOP_OUTER] = FlipColor(TkWinGetBorderPixels(tkwin, border, TK_3D_DARK_GC)); boxesPalette[PAL_TOP_INNER] = FlipColor(TkWinGetBorderPixels(tkwin, 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 == STATE_DISABLED) || (butPtr->flags & TRISTATED)) { 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, (int)tsdPtr->boxWidth, (int)tsdPtr->boxHeight, xSrc, ySrc, (int)tsdPtr->boxWidth, (int)tsdPtr->boxHeight, tsdPtr->boxesBits, (LPBITMAPINFO) tsdPtr->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 so the stippling is the right color. */ if ((butPtr->state == STATE_DISABLED) && ((butPtr->disabledFg == NULL) || (butPtr->image != NULL))) { if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn && (butPtr->selectBorder != NULL)) { XSetForeground(butPtr->display, butPtr->stippleGC, Tk_3DBorderColor(butPtr->selectBorder)->pixel); } /* * Stipple the whole button if no disabledFg was specified, otherwise * restrict stippling only to displayed image */ if (butPtr->disabledFg == NULL) { XFillRectangle(butPtr->display, pixmap, butPtr->stippleGC, 0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin)); } else { XFillRectangle(butPtr->display, pixmap, butPtr->stippleGC, imageXOffset, imageYOffset, (unsigned) imageWidth, (unsigned) imageHeight); } if ((butPtr->flags & SELECTED) && !butPtr->indicatorOn && (butPtr->selectBorder != NULL)) { XSetForeground(butPtr->display, butPtr->stippleGC, 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, (int) butPtr->highlightColorPtr->pixel); TkWinFillRect(dc, 0, 0, defaultWidth, Tk_Height(tkwin), (int) butPtr->highlightColorPtr->pixel); TkWinFillRect(dc, 0, Tk_Height(tkwin) - defaultWidth, Tk_Width(tkwin), defaultWidth, (int) butPtr->highlightColorPtr->pixel); TkWinFillRect(dc, Tk_Width(tkwin) - defaultWidth, 0, defaultWidth, Tk_Height(tkwin), (int) butPtr->highlightColorPtr->pixel); TkWinReleaseDrawableDC(pixmap, dc, &state); } if (butPtr->flags & GOT_FOCUS) { Tk_SetCaretPos(tkwin, x, y, 0 /* not used */); } /* * 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( register TkButton *butPtr) /* Button whose geometry may have changed. */ { int txtWidth, txtHeight; /* Width and height of text */ int imgWidth, imgHeight; /* Width and height of image */ int width = 0, height = 0; /* Width and height of button */ int haveImage, haveText; int avgWidth; int minWidth; /* Vertical and horizontal dialog units size in pixels. */ double vDLU, hDLU; Tk_FontMetrics fm; ThreadSpecificData *tsdPtr = (ThreadSpecificData *) Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); if (butPtr->highlightWidth < 0) { butPtr->highlightWidth = 0; } butPtr->inset = butPtr->highlightWidth + butPtr->borderWidth; butPtr->indicatorSpace = 0; if (!tsdPtr->boxesPtr) { InitBoxes(); } /* * Figure out image metrics. */ if (butPtr->image != NULL) { Tk_SizeOfImage(butPtr->image, &imgWidth, &imgHeight); haveImage = 1; } else if (butPtr->bitmap != None) { Tk_SizeOfBitmap(butPtr->display, butPtr->bitmap, &imgWidth, &imgHeight); haveImage = 1; } else { imgWidth = 0; imgHeight = 0; haveImage = 0; } /* * Figure out font metrics (even if we don't have text because we need * DLUs (based on font, not text) for some spacing calculations below). */ Tk_FreeTextLayout(butPtr->textLayout); butPtr->textLayout = Tk_ComputeTextLayout(butPtr->tkfont, Tcl_GetString(butPtr->textPtr), -1, butPtr->wrapLength, butPtr->justify, 0, &butPtr->textWidth, &butPtr->textHeight); txtWidth = butPtr->textWidth; txtHeight = butPtr->textHeight; haveText = (*(Tcl_GetString(butPtr->textPtr)) != '\0'); avgWidth = (Tk_TextWidth(butPtr->tkfont, "abcdefghijklmnopqurstuvwzyABCDEFGHIJKLMNOPQURSTUVWZY", 52) + 26) / 52; Tk_GetFontMetrics(butPtr->tkfont, &fm); /* * Compute dialog units for layout calculations. */ hDLU = avgWidth / 4.0; vDLU = fm.linespace / 8.0; /* * First, let's try to compute button size "by the book" (See "Microsoft * Windows User Experience" (ISBN 0-7356-0566-1), Chapter 14 - Visual * Design, Section 4 - Layout (page 448)). * * Note, that Tk "buttons" are Microsoft "Command buttons", Tk * "checkbuttons" are Microsoft "check boxes", Tk "radiobuttons" are * Microsoft "option buttons", and Tk "labels" are Microsoft "text * labels". */ /* * Set width and height by button type; See User Experience table, p449. * These are text-based measurements, even if the text is "". If there is * an image, height will get set again later. */ switch (butPtr->type) { case TYPE_BUTTON: /* * First compute the minimum width of the button in characters. MWUE * says that the button should be 50 DLUs. We allow 6 DLUs padding * left and right. (There is no rule but this is consistent with the * fact that button text is 8 DLUs high and buttons are 14 DLUs high.) * * The width is specified in characters. A character is, by * definition, 4 DLUs wide. 11 char * 4 DLU is 44 DLU + 6 DLU padding * = 50 DLU. Therefore, width = -11 -> MWUE compliant buttons. */ if (butPtr->width < 0) { minWidth = -(butPtr->width); /* Min width in chars */ width = avgWidth * minWidth; /* Allow for characters */ width += (int)(0.5 + (6 * hDLU)); /* Add for padding */ } /* * If shrink-wrapping was requested (width = 0) or if the text is * wider than the default button width, adjust the button width up to * suit. */ if (butPtr->width == 0 || (txtWidth + (int)(0.5 + (6 * hDLU)) > width)) { width = txtWidth + (int)(0.5 + (6 * hDLU)); } /* * The User Experience says 14 DLUs. Since text is, by definition, 8 * DLU/line, this allows for multi-line text while working perfectly * for single-line text. */ height = txtHeight + (int)(0.5 + (6 * vDLU)); /* * The above includes 6 DLUs of padding which should include defaults * of 1 pixel of highlightwidth, 2 pixels of borderwidth, 1 pixel of * padding and 1 pixel of extra inset on each side. Those will be * added later so reduce width and height now to compensate. */ width -= 10; height -= 10; if (!haveImage) { /* * Extra inset for the focus ring. */ butPtr->inset += 1; } break; case TYPE_LABEL: /* * The User Experience says, "as wide as needed". */ width = txtWidth; /* * The User Experience says, "8 (DLUs) per line of text". Since text * is, by definition, 8 DLU/line, this allows for multi-line text * while working perfectly for single-line text. */ if (txtHeight) { height = txtHeight; } else { /* * If there's no text, we want the height to be one linespace. */ height = fm.linespace; } break; case TYPE_RADIO_BUTTON: case TYPE_CHECK_BUTTON: { /* * See note for TYPE_LABEL. */ width = txtWidth; /* * The User Experience says 10 DLUs. (Is that one DLU above and below * for the focus ring?) See note above about multi-line text and 8 * DLU/line. */ height = txtHeight + (int)(0.5 + (2.0 * vDLU)); /* * The above includes 2 DLUs of padding which should include defaults * of 1 pixel of highlightwidth, 0 pixels of borderwidth, and 1 pixel * of padding on each side. Those will be added later so reduce height * now to compensate. */ height -= 4; /* * Extra inset for the focus ring. */ butPtr->inset += 1; break; } }/* switch */ /* * At this point, the width and height are correct for a Tk text button, * excluding padding and inset, but we have to allow for compound buttons. * The image may be above, below, left, or right of the text. */ /* * If the button is compound (i.e., it shows both an image and text), the * new geometry is a combination of the image and text geometry. We only * honor the compound bit if the button has both text and an image, * because otherwise it is not really a compound button. */ if (butPtr->compound != COMPOUND_NONE && haveImage && haveText) { switch ((enum compound) butPtr->compound) { case COMPOUND_TOP: case COMPOUND_BOTTOM: /* * Image is above or below text. */ if (imgWidth > width) { width = imgWidth; } height += imgHeight + butPtr->padY; break; case COMPOUND_LEFT: case COMPOUND_RIGHT: /* * Image is left or right of text. * * Only increase width of button if image doesn't fit in slack * space of default button width */ if ((imgWidth + txtWidth + butPtr->padX) > width) { width = imgWidth + txtWidth + butPtr->padX; } if (imgHeight > height) { height = imgHeight; } break; case COMPOUND_CENTER: /* * Image and text are superimposed. */ if (imgWidth > width) { width = imgWidth; } if (imgHeight > height) { height = imgHeight; } break; case COMPOUND_NONE: break; } /* switch */ /* * Fix up for minimum width. */ if (butPtr->width < 0) { /* * minWidth in pixels (because there's an image. */ minWidth = -(butPtr->width); if (width < minWidth) { width = minWidth; } } else if (butPtr->width > 0) { width = butPtr->width; } if (butPtr->height > 0) { height = butPtr->height; } width += 2*butPtr->padX; height += 2*butPtr->padY; } else if (haveImage) { if (butPtr->width > 0) { width = butPtr->width; } else { width = imgWidth; } if (butPtr->height > 0) { height = butPtr->height; } else { height = imgHeight; } } else { /* * No image. May or may not be text. May or may not be compound. */ /* * butPtr->width is in characters. We need to allow for that many * characters on the face, not in the over-all button width */ if (butPtr->width > 0) { width = butPtr->width * avgWidth; } /* * butPtr->height is in lines of text. We need to allow for that many * lines on the face, not in the over-all button height. */ if (butPtr->height > 0) { height = butPtr->height * fm.linespace; /* * Make the same adjustments as above to get same height for e.g. * a one line text with -height 0 or 1. [Bug #565485] */ switch (butPtr->type) { case TYPE_BUTTON: { height += (int)(0.5 + (6 * vDLU)) - 10; break; } case TYPE_RADIO_BUTTON: case TYPE_CHECK_BUTTON: { height += (int)(0.5 + (2.0 * vDLU)) - 4; break; } } } width += 2 * butPtr->padX; height += 2 * butPtr->padY; } /* * Fix up width and height for indicator sizing and spacing. */ if (butPtr->type == TYPE_RADIO_BUTTON || butPtr->type == TYPE_CHECK_BUTTON) { if (butPtr->indicatorOn) { butPtr->indicatorDiameter = tsdPtr->boxHeight; /* * Make sure we can see the whole indicator, even if the text or * image is very small. */ if (height < butPtr->indicatorDiameter) { height = butPtr->indicatorDiameter; } /* * There is no rule for space between the indicator and the text * (the two are atomic on 'Windows) but the User Experience page * 451 says leave 3 hDLUs between "text labels and their * associated controls". */ butPtr->indicatorSpace = butPtr->indicatorDiameter + (int)(0.5 + (3.0 * hDLU)); width += butPtr->indicatorSpace; } } /* * Inset is always added to the size. */ width += 2 * butPtr->inset; height += 2 * butPtr->inset; Tk_GeometryRequest(butPtr->tkwin, width, height); 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 hwnd, UINT message, WPARAM wParam, LPARAM lParam) { LRESULT result; WinButton *butPtr; Tk_Window tkwin = Tk_HWNDToWindow(hwnd); if (tkwin == NULL) { Tcl_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); /* * Special note: must cancel any existing idle handler for * TkpDisplayButton; it's no longer needed, and TkpDisplayButton * cleared the REDRAW_PENDING flag. */ Tcl_CancelIdleCall(TkpDisplayButton, (ClientData)butPtr); return 0; } case BN_CLICKED: { /* * OOPS: chromium fires WM_NULL regularly to ping if plugin is still * alive. When using an external window (i.e. via the tcl plugin), this * causes all buttons to fire once a second, so we need to make sure * that we are not dealing with the chromium life check. */ if (wParam != 0 || lParam != 0) { int code; Tcl_Interp *interp = butPtr->info.interp; if (butPtr->info.state != STATE_DISABLED) { 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_BackgroundException(interp, code); } 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); } /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 * End: */