/* * 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 * * 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 1.2.2.9 2007/06/29 03:22:02 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 = (MacScale *) 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_BackgroundError(interp); } 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); }