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-rw-r--r--macosx/tkMacOSXDraw.c116
-rw-r--r--macosx/tkMacOSXRegion.c64
2 files changed, 116 insertions, 64 deletions
diff --git a/macosx/tkMacOSXDraw.c b/macosx/tkMacOSXDraw.c
index 1aba8f4..29b6d0a 100644
--- a/macosx/tkMacOSXDraw.c
+++ b/macosx/tkMacOSXDraw.c
@@ -217,8 +217,6 @@ XCopyArea(
display->request++;
- TkMacOSXDbgMsg("XCopyArea");
-
if (!width || !height) {
/* This happens all the time.
TkMacOSXDbgMsg("Drawing of empty area requested");
@@ -239,7 +237,7 @@ XCopyArea(
img = [bitmap_rep CGImage];
}
} else {
- TkMacOSXDbgMsg("Invalid source drawable");
+ TkMacOSXDbgMsg("Invalid source drawable - neither window nor pixmap.");
}
if (img) {
@@ -249,11 +247,11 @@ XCopyArea(
CGRectMake(dest_x, dest_y, width, height));
CFRelease(img);
} else {
- TkMacOSXDbgMsg("Invalid source drawable");
+ TkMacOSXDbgMsg("Failed to construct CGImage.");
}
} else {
- TkMacOSXDbgMsg("Invalid destination drawable");
+ TkMacOSXDbgMsg("Invalid destination drawable - no context.");
return;
}
@@ -1478,43 +1476,97 @@ TkScrollWindow(
int dx, int dy, /* Distance rectangle should be moved. */
TkRegion damageRgn) /* Region to accumulate damage in. */
{
- MacDrawable *macDraw = (MacDrawable *) Tk_WindowId(tkwin);
+ Drawable drawable = Tk_WindowId(tkwin);
+ MacDrawable *macDraw = (MacDrawable *) drawable;
NSView *view = TkMacOSXDrawableView(macDraw);
- CGRect visRect, srcRect, dstRect;
- CGFloat boundsH;
- HIShapeRef dmgRgn, dstRgn;
+ CGRect visRect, srcRect, dstRect, scroll_src, scroll_dst;
+ HIShapeRef dmgRgn = NULL;
+ NSRect bounds;
int result;
- if (view && !CGRectIsEmpty(visRect = NSRectToCGRect([view visibleRect]))) {
- boundsH = [view bounds].size.height;
- srcRect = CGRectMake(macDraw->xOff + x, boundsH - height -
- (macDraw->yOff + y), width, height);
- dstRect = CGRectIntersection(CGRectOffset(srcRect, dx, -dy), visRect);
- srcRect = CGRectIntersection(srcRect, visRect);
- if (!CGRectIsEmpty(srcRect) && !CGRectIsEmpty(dstRect)) {
+ if ( view ) {
+ /* Get the scroll area in NSView coordinates (origin at bottom left). */
+ bounds = [view bounds];
+ scroll_src = CGRectMake(
+ macDraw->xOff + x,
+ bounds.size.height - height - (macDraw->yOff + y),
+ width, height);
+ scroll_dst = CGRectOffset(scroll_src, dx, -dy);
+ /* Limit scrolling to the window content area. */
+ visRect = NSRectToCGRect([view visibleRect]);
+ scroll_src = CGRectIntersection(scroll_src, visRect);
+ scroll_dst = CGRectIntersection(scroll_dst, visRect);
+
+ if ( !CGRectIsEmpty(scroll_src) && !CGRectIsEmpty(scroll_dst) ) {
+
/*
- CGRect sRect = CGRectIntersection(CGRectOffset(dstRect, -dx, dy),
- srcRect);
- NSCopyBits(0, NSRectFromCGRect(sRect),
- NSPointFromCGPoint(CGRectOffset(sRect, dx, -dy).origin));
- */
- [view scrollRect:NSRectFromCGRect(srcRect) by:NSMakeSize(dx, -dy)];
+ * Mark the difference between source and destination as damaged.
+ * This region is described in the Tk coordinate system, after shifting by dy.
+ */
+
+ srcRect = CGRectMake(x - macDraw->xOff, y - macDraw->yOff,
+ width, height);
+ dstRect = CGRectOffset(srcRect, dx, dy);
+ dmgRgn = HIShapeCreateMutableWithRect(&srcRect);
+ HIShapeRef dstRgn = HIShapeCreateWithRect(&dstRect);
+ ChkErr(HIShapeDifference, dmgRgn, dstRgn, (HIMutableShapeRef) dmgRgn);
+ CFRelease(dstRgn);
+
+ /* Scroll the rectangle. */
+ [view scrollRect:NSRectFromCGRect(scroll_src) by:NSMakeSize(dx, -dy)];
+ [view displayRect:NSRectFromCGRect(scroll_dst)];
+
+ /*
+ * When a Text widget contains embedded images, scrolling generates
+ * lots of artifacts involving multiple copies of the images
+ * displayed on top of each other. Extensive experimentation, with
+ * very little help from the Apple documentation, indicates that
+ * whenever an image is displayed it gets added as a subview, which
+ * then gets automatically redisplayed in its original location.
+ *
+ * We do two things to combat this. First, each subview that meets
+ * the scroll area is added as a damage rectangle. Second, we
+ * redisplay the subviews after the scroll.
+ */
+
+ /*
+ * Step 1: Find any subviews that meet the scroll area and mark
+ * them as damaged. Use Tk coordinates, shifted to account for the
+ * future scrolling.
+ */
+
+ for (NSView *subview in [view subviews] ) {
+ NSRect frame = [subview frame];
+ CGRect subviewRect = CGRectMake(
+ frame.origin.x - macDraw->xOff + dx,
+ (bounds.size.height - frame.origin.y - frame.size.height) - macDraw->yOff + dy,
+ frame.size.width, frame.size.height);
+ /* Rectangles with negative coordinates seem to cause trouble. */
+ if (subviewRect.origin.y < 0 && subviewRect.origin.y + subviewRect.size.height > 0) {
+ subviewRect.origin.y = 0;
+ }
+ CGRect intersection = CGRectIntersection(srcRect, subviewRect);
+ if (! CGRectIsEmpty(intersection) ){
+ dstRgn = HIShapeCreateWithRect(&subviewRect);
+ ChkErr(HIShapeUnion, dmgRgn, dstRgn, (HIMutableShapeRef) dmgRgn);
+ CFRelease(dstRgn);
+ }
+ }
+
+ /* Step 2: Redisplay all subviews */
+ for (NSView *subview in [view subviews] ) {
+ [subview display];
+ }
}
- srcRect.origin.y = boundsH - srcRect.size.height - srcRect.origin.y;
- dstRect.origin.y = boundsH - dstRect.size.height - dstRect.origin.y;
- srcRect = CGRectUnion(srcRect, dstRect);
- dmgRgn = HIShapeCreateMutableWithRect(&srcRect);
- dstRgn = HIShapeCreateWithRect(&dstRect);
- ChkErr(HIShapeDifference, dmgRgn, dstRgn, (HIMutableShapeRef) dmgRgn);
- CFRelease(dstRgn);
- TkMacOSXInvalidateViewRegion(view, dmgRgn);
- } else {
+ }
+
+ if ( dmgRgn == NULL ) {
dmgRgn = HIShapeCreateEmpty();
}
+ //TkMacOSXInvalidateViewRegion(view, dmgRgn);
TkMacOSXSetWithNativeRegion(damageRgn, dmgRgn);
result = HIShapeIsEmpty(dmgRgn) ? 0 : 1;
CFRelease(dmgRgn);
-
return result;
}
diff --git a/macosx/tkMacOSXRegion.c b/macosx/tkMacOSXRegion.c
index 8432299..c716ab7 100644
--- a/macosx/tkMacOSXRegion.c
+++ b/macosx/tkMacOSXRegion.c
@@ -158,6 +158,29 @@ TkUnionRectWithRegion(
/*
*----------------------------------------------------------------------
*
+ * TkMacOSXIsEmptyRegion --
+ *
+ * Return native region for given tk region.
+ *
+ * Results:
+ * 1 if empty, 0 otherwise.
+ *
+ * Side effects:
+ * None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TkMacOSXIsEmptyRegion(
+ TkRegion r)
+{
+ return HIShapeIsEmpty((HIMutableShapeRef) r) ? 1 : 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
* TkRectInRegion --
*
* Implements the equivelent of the X window function XRectInRegion. See
@@ -181,12 +204,14 @@ TkRectInRegion(
unsigned int width,
unsigned int height)
{
- int result;
- const CGRect r = CGRectMake(x, y, width, height);
-
- result = HIShapeIntersectsRect((HIShapeRef) region, &r) ?
+ if ( TkMacOSXIsEmptyRegion(region) ) {
+ return RectangleOut;
+ }
+ else {
+ const CGRect r = CGRectMake(x, y, width, height);
+ return HIShapeIntersectsRect((HIShapeRef) region, &r) ?
RectanglePart : RectangleOut;
- return result;
+ }
}
/*
@@ -332,12 +357,11 @@ TkpReleaseRegion(
{
CFRelease(r);
}
-#if 0
/*
*----------------------------------------------------------------------
*
- * TkMacOSXEmtpyRegion --
+ * TkMacOSXSetEmptyRegion --
*
* Set region to emtpy.
*
@@ -351,7 +375,7 @@ TkpReleaseRegion(
*/
void
-TkMacOSXEmtpyRegion(
+TkMacOSXSetEmptyRegion(
TkRegion r)
{
ChkErr(HIShapeSetEmpty, (HIMutableShapeRef) r);
@@ -360,30 +384,6 @@ TkMacOSXEmtpyRegion(
/*
*----------------------------------------------------------------------
*
- * TkMacOSXIsEmptyRegion --
- *
- * Return native region for given tk region.
- *
- * Results:
- * 1 if empty, 0 otherwise.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-int
-TkMacOSXIsEmptyRegion(
- TkRegion r)
-{
- return HIShapeIsEmpty((HIMutableShapeRef) r) ? 1 : 0;
-}
-#endif
-
-/*
- *----------------------------------------------------------------------
- *
* TkMacOSXGetNativeRegion --
*
* Return native region for given tk region.
generated by cgit v0.12 at 2024-11-05 04:09:21 (GMT)