diff options
Diffstat (limited to 'unix/tkUnixDraw.c')
| -rw-r--r-- | unix/tkUnixDraw.c | 130 |
1 files changed, 69 insertions, 61 deletions
diff --git a/unix/tkUnixDraw.c b/unix/tkUnixDraw.c index adde20d..c0d4d7f 100644 --- a/unix/tkUnixDraw.c +++ b/unix/tkUnixDraw.c @@ -1,15 +1,14 @@ -/* +/* * tkUnixDraw.c -- * * This file contains X specific drawing routines. * * Copyright (c) 1995 Sun Microsystems, Inc. * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * See the file "license.terms" for information on usage and redistribution of + * this file, and for a DISCLAIMER OF ALL WARRANTIES. */ -#include "tkPort.h" #include "tkInt.h" #if !defined(__WIN32__) @@ -17,8 +16,8 @@ #endif /* - * The following structure is used to pass information to - * ScrollRestrictProc from TkScrollWindow. + * The following structure is used to pass information to ScrollRestrictProc + * from TkScrollWindow. */ typedef struct ScrollInfo { @@ -30,46 +29,46 @@ typedef struct ScrollInfo { } ScrollInfo; /* - * Forward declarations for procedures declared later in this file: + * Forward declarations for functions declared later in this file: */ -static Tk_RestrictAction ScrollRestrictProc _ANSI_ARGS_(( - ClientData arg, XEvent *eventPtr)); +static Tk_RestrictAction ScrollRestrictProc(ClientData arg, XEvent *eventPtr); /* *---------------------------------------------------------------------- * * TkScrollWindow -- * - * Scroll a rectangle of the specified window and accumulate - * damage information in the specified Region. + * Scroll a rectangle of the specified window and accumulate damage + * information in the specified Region. * * Results: - * Returns 0 if no damage additional damage was generated. Sets - * damageRgn to contain the damaged areas and returns 1 if - * GraphicsExpose events were detected. + * Returns 0 if no damage additional damage was generated. Sets damageRgn + * to contain the damaged areas and returns 1 if GraphicsExpose events + * were detected. * * Side effects: - * Scrolls the bits in the window and enters the event loop - * looking for damage events. + * Scrolls the bits in the window and enters the event loop looking for + * damage events. * *---------------------------------------------------------------------- */ int -TkScrollWindow(tkwin, gc, x, y, width, height, dx, dy, damageRgn) - Tk_Window tkwin; /* The window to be scrolled. */ - GC gc; /* GC for window to be scrolled. */ - int x, y, width, height; /* Position rectangle to be scrolled. */ - int dx, dy; /* Distance rectangle should be moved. */ - TkRegion damageRgn; /* Region to accumulate damage in. */ +TkScrollWindow( + Tk_Window tkwin, /* The window to be scrolled. */ + GC gc, /* GC for window to be scrolled. */ + int x, int y, int width, int height, + /* Position rectangle to be scrolled. */ + int dx, int dy, /* Distance rectangle should be moved. */ + TkRegion damageRgn) /* Region to accumulate damage in. */ { Tk_RestrictProc *oldProc; ClientData oldArg, dummy; ScrollInfo info; - + XCopyArea(Tk_Display(tkwin), Tk_WindowId(tkwin), Tk_WindowId(tkwin), gc, - x, y, (unsigned int) width, (unsigned int) height, x + dx, y + dy); + x, y, (unsigned) width, (unsigned) height, x+dx, y+dy); info.done = 0; info.window = Tk_WindowId(tkwin); @@ -79,9 +78,9 @@ TkScrollWindow(tkwin, gc, x, y, width, height, dx, dy, damageRgn) info.dy = dy; /* - * Sync the event stream so all of the expose events will be on the - * Tk event queue before we start filtering. This avoids busy waiting - * while we filter events. + * Sync the event stream so all of the expose events will be on the Tk + * event queue before we start filtering. This avoids busy waiting while + * we filter events. */ TkpSync(info.display); @@ -105,9 +104,9 @@ TkScrollWindow(tkwin, gc, x, y, width, height, dx, dy, damageRgn) * ScrollRestrictProc -- * * A Tk_RestrictProc used by TkScrollWindow to gather up Expose - * information into a single damage region. It accumulates damage - * events on the specified window until a NoExpose or the last - * GraphicsExpose event is detected. + * information into a single damage region. It accumulates damage events + * on the specified window until a NoExpose or the last GraphicsExpose + * event is detected. * * Results: * None. @@ -120,9 +119,9 @@ TkScrollWindow(tkwin, gc, x, y, width, height, dx, dy, damageRgn) */ static Tk_RestrictAction -ScrollRestrictProc(arg, eventPtr) - ClientData arg; - XEvent *eventPtr; +ScrollRestrictProc( + ClientData arg, + XEvent *eventPtr) { ScrollInfo *info = (ScrollInfo *) arg; XRectangle rect; @@ -150,13 +149,12 @@ ScrollRestrictProc(arg, eventPtr) info->done = 1; } } else if (eventPtr->type == Expose) { - /* - * This case is tricky. This event was already queued before - * the XCopyArea was issued. If this area overlaps the area - * being copied, then some of the copied area may be invalid. - * The easiest way to handle this case is to mark both the - * original area and the shifted area as damaged. + * This case is tricky. This event was already queued before the + * XCopyArea was issued. If this area overlaps the area being copied, + * then some of the copied area may be invalid. The easiest way to + * handle this case is to mark both the original area and the shifted + * area as damaged. */ rect.x = eventPtr->xexpose.x; @@ -180,30 +178,30 @@ ScrollRestrictProc(arg, eventPtr) * * TkpDrawHighlightBorder -- * - * This procedure draws a rectangular ring around the outside of - * a widget to indicate that it has received the input focus. + * This function draws a rectangular ring around the outside of a widget + * to indicate that it has received the input focus. * - * On Unix, we just draw the simple inset ring. On other sytems, - * e.g. the Mac, the focus ring is a little more complicated, so we - * need this abstraction. + * On Unix, we just draw the simple inset ring. On other sytems, e.g. the + * Mac, the focus ring is a little more complicated, so we need this + * abstraction. * * Results: * None. * * Side effects: - * A rectangle "width" pixels wide is drawn in "drawable", - * corresponding to the outer area of "tkwin". + * A rectangle "width" pixels wide is drawn in "drawable", corresponding + * to the outer area of "tkwin". * *---------------------------------------------------------------------- */ -void -TkpDrawHighlightBorder(tkwin, fgGC, bgGC, highlightWidth, drawable) - Tk_Window tkwin; - GC fgGC; - GC bgGC; - int highlightWidth; - Drawable drawable; +void +TkpDrawHighlightBorder( + Tk_Window tkwin, + GC fgGC, + GC bgGC, + int highlightWidth, + Drawable drawable) { TkDrawInsetFocusHighlight(tkwin, fgGC, highlightWidth, drawable, 0); } @@ -213,7 +211,7 @@ TkpDrawHighlightBorder(tkwin, fgGC, bgGC, highlightWidth, drawable) * * TkpDrawFrame -- * - * This procedure draws the rectangular frame area. + * This function draws the rectangular frame area. * * Results: * None. @@ -225,12 +223,22 @@ TkpDrawHighlightBorder(tkwin, fgGC, bgGC, highlightWidth, drawable) */ void -TkpDrawFrame (Tk_Window tkwin, Tk_3DBorder border, - int highlightWidth, int borderWidth, int relief) +TkpDrawFrame( + Tk_Window tkwin, + Tk_3DBorder border, + int highlightWidth, + int borderWidth, + int relief) { - Tk_Fill3DRectangle(tkwin, Tk_WindowId(tkwin), - border, highlightWidth, highlightWidth, - Tk_Width(tkwin) - 2 * highlightWidth, - Tk_Height(tkwin) - 2 * highlightWidth, - borderWidth, relief); + Tk_Fill3DRectangle(tkwin, Tk_WindowId(tkwin), border, highlightWidth, + highlightWidth, Tk_Width(tkwin) - 2*highlightWidth, + Tk_Height(tkwin) - 2*highlightWidth, borderWidth, relief); } + +/* + * Local Variables: + * mode: c + * c-basic-offset: 4 + * fill-column: 78 + * End: + */ |