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Diffstat (limited to 'carbon/tkMacOSXScale.c')
| -rw-r--r-- | carbon/tkMacOSXScale.c | 484 |
1 files changed, 484 insertions, 0 deletions
diff --git a/carbon/tkMacOSXScale.c b/carbon/tkMacOSXScale.c new file mode 100644 index 0000000..8adcc73 --- /dev/null +++ b/carbon/tkMacOSXScale.c @@ -0,0 +1,484 @@ +/* + * tkMacOSXScale.c -- + * + * This file implements the Macintosh specific portion of the + * scale widget. + * + * Copyright (c) 1996 by Sun Microsystems, Inc. + * Copyright (c) 1998-2000 by Scriptics Corporation. + * Copyright (c) 2006-2007 Daniel A. Steffen <das@users.sourceforge.net> + * + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + * RCS: @(#) $Id: tkMacOSXScale.c,v 1.1 2009/06/26 01:42:47 das Exp $ + */ + +#include "tkMacOSXPrivate.h" +#include "tkScale.h" + +/* +#ifdef TK_MAC_DEBUG +#define TK_MAC_DEBUG_SCALE +#endif +*/ + +/* + * Defines used in this file. + */ + +#define slider 1110 +#define inSlider 1 +#define inInc 2 +#define inDecr 3 + +/* + * Declaration of Macintosh specific scale structure. + */ + +typedef struct MacScale { + TkScale info; /* Generic scale info. */ + int flags; /* Flags. */ + ControlRef scaleHandle; /* Handle to the Scale control struct. */ +} MacScale; + +/* + * Globals uses locally in this file. + */ +static ControlActionUPP scaleActionProc = NULL; /* Pointer to func. */ + +/* + * Forward declarations for procedures defined later in this file: + */ + +static void MacScaleEventProc(ClientData clientData, XEvent *eventPtr); +static pascal void ScaleActionProc(ControlRef theControl, + ControlPartCode partCode); + + +/* + *---------------------------------------------------------------------- + * + * TkpCreateScale -- + * + * Allocate a new TkScale structure. + * + * Results: + * Returns a newly allocated TkScale structure. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +TkScale * +TkpCreateScale( + Tk_Window tkwin) +{ + MacScale *macScalePtr = ckalloc(sizeof(MacScale)); + + macScalePtr->scaleHandle = NULL; + if (scaleActionProc == NULL) { + scaleActionProc = NewControlActionUPP(ScaleActionProc); + } + + Tk_CreateEventHandler(tkwin, ButtonPressMask, + MacScaleEventProc, (ClientData) macScalePtr); + + return (TkScale *) macScalePtr; +} + +/* + *---------------------------------------------------------------------- + * + * TkpDestroyScale -- + * + * Free Macintosh specific resources. + * + * Results: + * None + * + * Side effects: + * The slider control is destroyed. + * + *---------------------------------------------------------------------- + */ + +void +TkpDestroyScale( + TkScale *scalePtr) +{ + MacScale *macScalePtr = (MacScale *) scalePtr; + + /* + * Free Macintosh control. + */ + + if (macScalePtr->scaleHandle != NULL) { + DisposeControl(macScalePtr->scaleHandle); + } +} + +/* + *---------------------------------------------------------------------- + * + * TkpDisplayScale -- + * + * This procedure is invoked as an idle handler to redisplay + * the contents of a scale widget. + * + * Results: + * None. + * + * Side effects: + * The scale gets redisplayed. + * + *---------------------------------------------------------------------- + */ + +void +TkpDisplayScale( + ClientData clientData) /* Widget record for scale. */ +{ + TkScale *scalePtr = (TkScale *) clientData; + Tk_Window tkwin = scalePtr->tkwin; + Tcl_Interp *interp = scalePtr->interp; + int result; + char string[PRINT_CHARS]; + MacScale *macScalePtr = (MacScale *) clientData; + Rect r; + WindowRef windowRef; + CGrafPtr destPort, savePort; + Boolean portChanged; + MacDrawable *macDraw; + SInt32 initialValue, minValue, maxValue; + UInt16 numTicks; + +#ifdef TK_MAC_DEBUG_SCALE + TkMacOSXDbgMsg("TkpDisplayScale"); +#endif + scalePtr->flags &= ~REDRAW_PENDING; + if ((scalePtr->tkwin == NULL) || !Tk_IsMapped(scalePtr->tkwin)) { + goto done; + } + + /* + * Invoke the scale's command if needed. + */ + + Tcl_Preserve((ClientData) scalePtr); + if ((scalePtr->flags & INVOKE_COMMAND) && (scalePtr->command != NULL)) { + Tcl_Preserve((ClientData) interp); + sprintf(string, scalePtr->format, scalePtr->value); + result = Tcl_VarEval(interp, scalePtr->command, " ", string, NULL); + if (result != TCL_OK) { + Tcl_AddErrorInfo(interp, "\n (command executed by scale)"); + Tcl_BackgroundException(interp, result); + } + Tcl_Release((ClientData) interp); + } + scalePtr->flags &= ~INVOKE_COMMAND; + if (scalePtr->flags & SCALE_DELETED) { + Tcl_Release((ClientData) scalePtr); + return; + } + Tcl_Release((ClientData) scalePtr); + + /* + * Now handle the part of redisplay that is the same for + * horizontal and vertical scales: border and traversal + * highlight. + */ + + if (scalePtr->highlightWidth != 0) { + GC gc = Tk_GCForColor(scalePtr->highlightColorPtr, Tk_WindowId(tkwin)); + + Tk_DrawFocusHighlight(tkwin, gc, scalePtr->highlightWidth, + Tk_WindowId(tkwin)); + } + Tk_Draw3DRectangle(tkwin, Tk_WindowId(tkwin), scalePtr->bgBorder, + scalePtr->highlightWidth, scalePtr->highlightWidth, + Tk_Width(tkwin) - 2*scalePtr->highlightWidth, + Tk_Height(tkwin) - 2*scalePtr->highlightWidth, + scalePtr->borderWidth, scalePtr->relief); + + /* + * Set up port for drawing Macintosh control. + */ + + macDraw = (MacDrawable *) Tk_WindowId(tkwin); + destPort = TkMacOSXGetDrawablePort(Tk_WindowId(tkwin)); + windowRef = TkMacOSXDrawableWindow(Tk_WindowId(tkwin)); + portChanged = QDSwapPort(destPort, &savePort); + TkMacOSXSetUpClippingRgn(Tk_WindowId(tkwin)); + + /* + * Create Macintosh control. + */ + +#define MAC_OSX_SCROLL_WIDTH 10 + + if (scalePtr->orient == ORIENT_HORIZONTAL) { + int offset = (Tk_Height(tkwin) - MAC_OSX_SCROLL_WIDTH)/2; + + if (offset < 0) { + offset = 0; + } + + r.left = macDraw->xOff + scalePtr->inset; + r.top = macDraw->yOff + offset; + r.right = macDraw->xOff+Tk_Width(tkwin) - scalePtr->inset; + r.bottom = macDraw->yOff + offset + MAC_OSX_SCROLL_WIDTH/2; + } else { + int offset = (Tk_Width(tkwin) - MAC_OSX_SCROLL_WIDTH)/2; + + if (offset < 0) { + offset = 0; + } + + r.left = macDraw->xOff + offset; + r.top = macDraw->yOff + scalePtr->inset; + r.right = macDraw->xOff + offset + MAC_OSX_SCROLL_WIDTH/2; + r.bottom = macDraw->yOff+Tk_Height(tkwin) - scalePtr->inset; + } + + if (macScalePtr->scaleHandle == NULL) { +#ifdef TK_MAC_DEBUG_SCALE + TkMacOSXDbgMsg("Initialising scale"); +#endif + initialValue = scalePtr->value; + if (scalePtr->orient == ORIENT_HORIZONTAL) { + minValue = scalePtr->fromValue; + maxValue = scalePtr->toValue; + } else { + minValue = scalePtr->fromValue; + maxValue = scalePtr->toValue; + } + + if (scalePtr->tickInterval == 0) { + numTicks = 0; + } else { + numTicks = (maxValue - minValue)/scalePtr->tickInterval; + } + + CreateSliderControl(windowRef, &r, initialValue, minValue, maxValue, + kControlSliderPointsDownOrRight, numTicks, 1, scaleActionProc, + &(macScalePtr->scaleHandle)); + SetControlReference(macScalePtr->scaleHandle, (UInt32) scalePtr); + + if (IsWindowActive(windowRef)) { + macScalePtr->flags |= ACTIVE; + } + } else { + SetControlBounds(macScalePtr->scaleHandle, &r); + SetControl32BitValue(macScalePtr->scaleHandle, scalePtr->value); + SetControl32BitMinimum(macScalePtr->scaleHandle, scalePtr->fromValue); + SetControl32BitMaximum(macScalePtr->scaleHandle, scalePtr->toValue); + } + + /* + * Finally draw the control. + */ + + SetControlVisibility(macScalePtr->scaleHandle,true,true); + HiliteControl(macScalePtr->scaleHandle,0); + Draw1Control(macScalePtr->scaleHandle); + + if (portChanged) { + QDSwapPort(savePort, NULL); + } +done: + scalePtr->flags &= ~REDRAW_ALL; +} + +/* + *---------------------------------------------------------------------- + * + * TkpScaleElement -- + * + * Determine which part of a scale widget lies under a given + * point. + * + * Results: + * The return value is either TROUGH1, SLIDER, TROUGH2, or + * OTHER, depending on which of the scale's active elements + * (if any) is under the point at (x,y). + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +int +TkpScaleElement( + TkScale *scalePtr, /* Widget record for scale. */ + int x, int y) /* Coordinates within scalePtr's window. */ +{ + MacScale *macScalePtr = (MacScale *) scalePtr; + ControlPartCode part; + Point where; + Rect bounds; + CGrafPtr destPort, savePort; + Boolean portChanged; + +#ifdef TK_MAC_DEBUG_SCALE + TkMacOSXDbgMsg("TkpScaleElement"); +#endif + destPort = TkMacOSXGetDrawablePort(Tk_WindowId(scalePtr->tkwin)); + portChanged = QDSwapPort(destPort, &savePort); + + /* + * All of the calculations in this procedure mirror those in + * DisplayScrollbar. Be sure to keep the two consistent. + */ + + TkMacOSXWinBounds((TkWindow *) scalePtr->tkwin, &bounds); + where.h = x + bounds.left; + where.v = y + bounds.top; + part = TestControl(macScalePtr->scaleHandle, where); + + if (portChanged) { + QDSwapPort(savePort, NULL); + } + +#ifdef TK_MAC_DEBUG_SCALE + fprintf (stderr,"ScalePart %d, pos ( %d %d )\n", part, where.h, where.v ); +#endif + + switch (part) { + case inSlider: + return SLIDER; + case inInc: + if (scalePtr->orient == ORIENT_VERTICAL) { + return TROUGH1; + } else { + return TROUGH2; + } + case inDecr: + if (scalePtr->orient == ORIENT_VERTICAL) { + return TROUGH2; + } else { + return TROUGH1; + } + default: + return OTHER; + } +} + +/* + *-------------------------------------------------------------- + * + * MacScaleEventProc -- + * + * This procedure is invoked by the Tk dispatcher for + * ButtonPress events on scales. + * + * Results: + * None. + * + * Side effects: + * When the window gets deleted, internal structures get + * cleaned up. When it gets exposed, it is redisplayed. + * + *-------------------------------------------------------------- + */ + +static void +MacScaleEventProc( + ClientData clientData, /* Information about window. */ + XEvent *eventPtr) /* Information about event. */ +{ + MacScale *macScalePtr = (MacScale *) clientData; + Point where; + Rect bounds; + int part; + CGrafPtr destPort, savePort; + Boolean portChanged; + +#ifdef TK_MAC_DEBUG_SCALE + fprintf(stderr,"MacScaleEventProc\n" ); +#endif + + /* + * To call Macintosh control routines we must have the port + * set to the window containing the control. We will then test + * which part of the control was hit and act accordingly. + */ + + destPort = TkMacOSXGetDrawablePort(Tk_WindowId(macScalePtr->info.tkwin)); + portChanged = QDSwapPort(destPort, &savePort); + TkMacOSXSetUpClippingRgn(Tk_WindowId(macScalePtr->info.tkwin)); + + TkMacOSXWinBounds((TkWindow *) macScalePtr->info.tkwin, &bounds); + where.h = eventPtr->xbutton.x + bounds.left; + where.v = eventPtr->xbutton.y + bounds.top; +#ifdef TK_MAC_DEBUG_SCALE + TkMacOSXDbgMsg("calling TestControl"); +#endif + part = TestControl(macScalePtr->scaleHandle, where); + if (part == 0) { + return; + } + + TkMacOSXTrackingLoop(1); + part = HandleControlClick(macScalePtr->scaleHandle, where, + TkMacOSXModifierState(), scaleActionProc); + TkMacOSXTrackingLoop(0); + + /* + * Update the value for the widget. + */ + + macScalePtr->info.value = GetControlValue(macScalePtr->scaleHandle); + /* TkScaleSetValue(&macScalePtr->info, macScalePtr->info.value, 1, 0); */ + + /* + * The HandleControlClick call will "eat" the ButtonUp event. We now + * generate a ButtonUp event so Tk will unset implicit grabs etc. + */ + + TkGenerateButtonEventForXPointer(Tk_WindowId(macScalePtr->info.tkwin)); + + if (portChanged) { + QDSwapPort(savePort, NULL); + } +} + +/* + *-------------------------------------------------------------- + * + * ScaleActionProc -- + * + * Callback procedure used by the Macintosh toolbox call + * HandleControlClick. This call will update the display + * while the scrollbar is being manipulated by the user. + * + * Results: + * None. + * + * Side effects: + * May change the display. + * + *-------------------------------------------------------------- + */ + +static pascal void +ScaleActionProc( + ControlRef theControl, /* Handle to scrollbat control */ + ControlPartCode partCode) /* Part of scrollbar that was "hit" */ +{ + int value; + TkScale *scalePtr = (TkScale *) GetControlReference(theControl); + +#ifdef TK_MAC_DEBUG_SCALE + TkMacOSXDbgMsg("ScaleActionProc"); +#endif + value = GetControlValue(theControl); + TkScaleSetValue(scalePtr, value, 1, 1); + Tcl_Preserve((ClientData) scalePtr); + TkMacOSXRunTclEventLoop(); + Tcl_Release((ClientData) scalePtr); +} + |