[Xquartz-changes] xserver: Branch 'server-1.13-apple' - 4 commits
Jeremy Huddleston
jeremyhu at freedesktop.org
Thu Apr 19 19:43:46 PDT 2012
Rebased ref, commits from common ancestor:
commit abf859480207adecb45a9cc6693f23425d67288c
Author: Jeremy Huddleston <jeremyhu at apple.com>
Date: Fri Feb 12 19:48:52 2010 -0800
fb: Revert fb changes that broke XQuartz
http://bugs.freedesktop.org/show_bug.cgi?id=26124
Revert "Fix source pictures getting random transforms after 2d6a8f668342a5190cdf43b5."
Revert "fb: Adjust transform or composite coordinates for pixman operations"
http://bugs.freedesktop.org/26124
This reverts commit a72c65e9176c51de95db2fdbf4c5d946a4911695.
This reverts commit a6bd5d2e482a5aa84acb3d4932e2a166d8670ef1.
Signed-off-by: Jeremy Huddleston <jeremyhu at apple.com>
diff --git a/fb/fb.h b/fb/fb.h
index b327ce6..53a6c1a 100644
--- a/fb/fb.h
+++ b/fb/fb.h
@@ -1683,8 +1683,7 @@ fbFillRegionSolid(DrawablePtr pDrawable,
RegionPtr pRegion, FbBits and, FbBits xor);
extern _X_EXPORT pixman_image_t *image_from_pict(PicturePtr pict,
- Bool has_clip,
- int *xoff, int *yoff);
+ Bool has_clip);
extern _X_EXPORT void free_pixman_pict(PicturePtr, pixman_image_t *);
diff --git a/fb/fbpict.c b/fb/fbpict.c
index 097a1a6..dc0ca3c 100644
--- a/fb/fbpict.c
+++ b/fb/fbpict.c
@@ -46,23 +46,18 @@ fbComposite(CARD8 op,
INT16 yMask, INT16 xDst, INT16 yDst, CARD16 width, CARD16 height)
{
pixman_image_t *src, *mask, *dest;
- int src_xoff, src_yoff;
- int msk_xoff, msk_yoff;
- int dst_xoff, dst_yoff;
-
miCompositeSourceValidate(pSrc);
if (pMask)
miCompositeSourceValidate(pMask);
- src = image_from_pict(pSrc, FALSE, &src_xoff, &src_yoff);
- mask = image_from_pict(pMask, FALSE, &msk_xoff, &msk_yoff);
- dest = image_from_pict(pDst, TRUE, &dst_xoff, &dst_yoff);
+ src = image_from_pict(pSrc, TRUE);
+ mask = image_from_pict(pMask, TRUE);
+ dest = image_from_pict(pDst, TRUE);
if (src && dest && !(pMask && !mask)) {
pixman_image_composite(op, src, mask, dest,
- xSrc + src_xoff, ySrc + src_yoff,
- xMask + msk_xoff, yMask + msk_yoff,
- xDst + dst_xoff, yDst + dst_yoff, width, height);
+ xSrc, ySrc, xMask, yMask, xDst, yDst,
+ width, height);
}
free_pixman_pict(pSrc, src);
@@ -143,20 +138,22 @@ create_conical_gradient_image(PictGradient * gradient)
}
static pixman_image_t *
-create_bits_picture(PicturePtr pict, Bool has_clip, int *xoff, int *yoff)
+create_bits_picture(PicturePtr pict, Bool has_clip)
{
- PixmapPtr pixmap;
FbBits *bits;
FbStride stride;
- int bpp;
+ int bpp, xoff, yoff;
pixman_image_t *image;
- fbGetDrawablePixmap(pict->pDrawable, pixmap, *xoff, *yoff);
- fbGetPixmapBitsData(pixmap, bits, stride, bpp);
+ fbGetDrawable (pict->pDrawable, bits, stride, bpp, xoff, yoff);
+
+ bits = (FbBits*)((CARD8*)bits +
+ (pict->pDrawable->y + yoff) * stride * sizeof(FbBits) +
+ (pict->pDrawable->x + xoff) * (bpp / 8));
image = pixman_image_create_bits((pixman_format_code_t) pict->format,
- pixmap->drawable.width,
- pixmap->drawable.height, (uint32_t *) bits,
+ pict->pDrawable->width,
+ pict->pDrawable->height, (uint32_t *) bits,
stride * sizeof(FbStride));
if (!image)
@@ -183,57 +180,31 @@ create_bits_picture(PicturePtr pict, Bool has_clip, int *xoff, int *yoff)
if (pict->clientClipType != CT_NONE)
pixman_image_set_has_client_clip(image, TRUE);
- if (*xoff || *yoff)
- pixman_region_translate(pict->pCompositeClip, *xoff, *yoff);
+ pixman_region_translate (pict->pCompositeClip, - pict->pDrawable->x, - pict->pDrawable->y);
pixman_image_set_clip_region(image, pict->pCompositeClip);
- if (*xoff || *yoff)
- pixman_region_translate(pict->pCompositeClip, -*xoff, -*yoff);
+ pixman_region_translate (pict->pCompositeClip, pict->pDrawable->x, pict->pDrawable->y);
}
/* Indexed table */
if (pict->pFormat->index.devPrivate)
pixman_image_set_indexed(image, pict->pFormat->index.devPrivate);
- /* Add in drawable origin to position within the image */
- *xoff += pict->pDrawable->x;
- *yoff += pict->pDrawable->y;
-
return image;
}
static pixman_image_t *image_from_pict_internal(PicturePtr pict, Bool has_clip,
- int *xoff, int *yoff,
Bool is_alpha_map);
static void
-set_image_properties(pixman_image_t * image, PicturePtr pict, Bool has_clip,
- int *xoff, int *yoff, Bool is_alpha_map)
+set_image_properties(pixman_image_t * image, PicturePtr pict, Bool is_alpha_map)
{
pixman_repeat_t repeat;
pixman_filter_t filter;
if (pict->transform) {
- /* For source images, adjust the transform to account
- * for the drawable offset within the pixman image,
- * then set the offset to 0 as it will be used
- * to compute positions within the transformed image.
- */
- if (!has_clip) {
- struct pixman_transform adjusted;
-
- adjusted = *pict->transform;
- pixman_transform_translate(&adjusted,
- NULL,
- pixman_int_to_fixed(*xoff),
- pixman_int_to_fixed(*yoff));
- pixman_image_set_transform(image, &adjusted);
- *xoff = 0;
- *yoff = 0;
- }
- else
- pixman_image_set_transform(image, pict->transform);
+ pixman_image_set_transform(image, pict->transform);
}
switch (pict->repeatType) {
@@ -261,10 +232,8 @@ set_image_properties(pixman_image_t * image, PicturePtr pict, Bool has_clip,
* as the alpha map for this operation
*/
if (pict->alphaMap && !is_alpha_map) {
- int alpha_xoff, alpha_yoff;
pixman_image_t *alpha_map =
- image_from_pict_internal(pict->alphaMap, FALSE, &alpha_xoff,
- &alpha_yoff, TRUE);
+ image_from_pict_internal(pict->alphaMap, TRUE, TRUE);
pixman_image_set_alpha_map(image, alpha_map, pict->alphaOrigin.x,
pict->alphaOrigin.y);
@@ -298,8 +267,7 @@ set_image_properties(pixman_image_t * image, PicturePtr pict, Bool has_clip,
}
static pixman_image_t *
-image_from_pict_internal(PicturePtr pict, Bool has_clip, int *xoff, int *yoff,
- Bool is_alpha_map)
+image_from_pict_internal(PicturePtr pict, Bool has_clip, Bool is_alpha_map)
{
pixman_image_t *image = NULL;
@@ -307,7 +275,7 @@ image_from_pict_internal(PicturePtr pict, Bool has_clip, int *xoff, int *yoff,
return NULL;
if (pict->pDrawable) {
- image = create_bits_picture(pict, has_clip, xoff, yoff);
+ image = create_bits_picture(pict, has_clip);
}
else if (pict->pSourcePict) {
SourcePict *sp = pict->pSourcePict;
@@ -325,19 +293,17 @@ image_from_pict_internal(PicturePtr pict, Bool has_clip, int *xoff, int *yoff,
else if (sp->type == SourcePictTypeConical)
image = create_conical_gradient_image(gradient);
}
- *xoff = *yoff = 0;
}
if (image)
- set_image_properties(image, pict, has_clip, xoff, yoff, is_alpha_map);
-
+ set_image_properties (image, pict, is_alpha_map);
return image;
}
pixman_image_t *
-image_from_pict(PicturePtr pict, Bool has_clip, int *xoff, int *yoff)
+image_from_pict (PicturePtr pict, Bool has_clip)
{
- return image_from_pict_internal(pict, has_clip, xoff, yoff, FALSE);
+ return image_from_pict_internal (pict, has_clip, FALSE);
}
void
diff --git a/fb/fbtrap.c b/fb/fbtrap.c
index bf82f8f..0145ce9 100644
--- a/fb/fbtrap.c
+++ b/fb/fbtrap.c
@@ -36,13 +36,12 @@ fbAddTraps(PicturePtr pPicture,
INT16 x_off, INT16 y_off, int ntrap, xTrap * traps)
{
pixman_image_t *image;
- int dst_xoff, dst_yoff;
- if (!(image = image_from_pict(pPicture, FALSE, &dst_xoff, &dst_yoff)))
- return;
-
- pixman_add_traps(image, x_off + dst_xoff, y_off + dst_yoff,
- ntrap, (pixman_trap_t *) traps);
+ if (!(image = image_from_pict (pPicture, FALSE)))
+ return;
+
+ pixman_add_traps(image, x_off, y_off,
+ ntrap, (pixman_trap_t *)traps);
free_pixman_pict(pPicture, image);
}
@@ -52,13 +51,12 @@ fbRasterizeTrapezoid(PicturePtr pPicture,
xTrapezoid * trap, int x_off, int y_off)
{
pixman_image_t *image;
- int dst_xoff, dst_yoff;
- if (!(image = image_from_pict(pPicture, FALSE, &dst_xoff, &dst_yoff)))
+ if (!(image = image_from_pict (pPicture, FALSE)))
return;
- pixman_rasterize_trapezoid(image, (pixman_trapezoid_t *) trap,
- x_off + dst_xoff, y_off + dst_yoff);
+ pixman_rasterize_trapezoid(image, (pixman_trapezoid_t *)trap,
+ x_off, y_off);
free_pixman_pict(pPicture, image);
}
@@ -68,14 +66,12 @@ fbAddTriangles(PicturePtr pPicture,
INT16 x_off, INT16 y_off, int ntri, xTriangle * tris)
{
pixman_image_t *image;
- int dst_xoff, dst_yoff;
- if (!(image = image_from_pict(pPicture, FALSE, &dst_xoff, &dst_yoff)))
+ if (!(image = image_from_pict (pPicture, FALSE)))
return;
-
- pixman_add_triangles(image,
- dst_xoff + x_off, dst_yoff + y_off,
- ntri, (pixman_triangle_t *) tris);
+
+ pixman_add_triangles(image, x_off, y_off, ntri,
+ (pixman_triangle_t *)tris);
free_pixman_pict(pPicture, image);
}
@@ -98,13 +94,11 @@ fbShapes(CompositeShapesFunc composite,
int16_t ySrc, int nshapes, int shape_size, const uint8_t * shapes)
{
pixman_image_t *src, *dst;
- int src_xoff, src_yoff;
- int dst_xoff, dst_yoff;
miCompositeSourceValidate(pSrc);
- src = image_from_pict(pSrc, FALSE, &src_xoff, &src_yoff);
- dst = image_from_pict(pDst, TRUE, &dst_xoff, &dst_yoff);
+ src = image_from_pict(pSrc, FALSE);
+ dst = image_from_pict(pDst, TRUE);
if (src && dst) {
pixman_format_code_t format;
@@ -121,9 +115,8 @@ fbShapes(CompositeShapesFunc composite,
for (i = 0; i < nshapes; ++i) {
composite(op, src, dst, format,
- xSrc + src_xoff,
- ySrc + src_yoff,
- dst_xoff, dst_yoff, 1, shapes + i * shape_size);
+ xSrc, ySrc, 0, 0,
+ 1, shapes + i * shape_size);
}
}
else {
@@ -143,8 +136,8 @@ fbShapes(CompositeShapesFunc composite,
}
composite(op, src, dst, format,
- xSrc + src_xoff,
- ySrc + src_yoff, dst_xoff, dst_yoff, nshapes, shapes);
+ xSrc, ySrc, 0, 0,
+ nshapes, shapes);
}
DamageRegionProcessPending(pDst->pDrawable);
commit b2bc4a8c2051a6d6d542217d52e4070dd367f944
Author: Jeremy Huddleston <jeremyhu at apple.com>
Date: Fri Apr 30 13:08:25 2010 -0700
Workaround the GC clipping problem in miPaintWindow and add some debugging output.
Signed-off-by: Jeremy Huddleston <jeremyhu at apple.com>
diff --git a/mi/miexpose.c b/mi/miexpose.c
index dbb29ca..93fd8a1 100644
--- a/mi/miexpose.c
+++ b/mi/miexpose.c
@@ -490,7 +490,8 @@ void RootlessSetPixmapOfAncestors(WindowPtr pWin);
void RootlessStartDrawing(WindowPtr pWin);
void RootlessDamageRegion(WindowPtr pWin, RegionPtr prgn);
Bool IsFramedWindow(WindowPtr pWin);
-#endif
+#include "../fb/fb.h"
+#endif
void
miPaintWindow(WindowPtr pWin, RegionPtr prgn, int what)
@@ -519,23 +520,37 @@ miPaintWindow(WindowPtr pWin, RegionPtr prgn, int what)
Bool solid = TRUE;
DrawablePtr drawable = &pWin->drawable;
+#ifdef XQUARTZ_CLIP_DEBUG
+ ErrorF("START %d BS %d (pR = %ld)\n", what, pWin->backgroundState, ParentRelative);
+ ErrorF(" Rgn: %d %d %d %d\n", prgn->extents.x1, prgn->extents.y1,
+ prgn->extents.x2 - prgn->extents.x1,
+ prgn->extents.y2 - prgn->extents.y1);
+ ErrorF(" Win: %d %d (%d %d) %d %d\n", pWin->origin.x, pWin->origin.y,
+ pWin->winSize.extents.x1, pWin->winSize.extents.y1,
+ pWin->winSize.extents.x2 - pWin->winSize.extents.x1,
+ pWin->winSize.extents.y2 - pWin->winSize.extents.y1);
+ ErrorF(" Draw: %d %d %d %d\n", pWin->drawable.x, pWin->drawable.y,
+ pWin->drawable.width, pWin->drawable.height);
+#endif
+
#ifdef ROOTLESS
if (!drawable || drawable->type == UNDRAWABLE_WINDOW)
return;
+#endif
+
+ if (what == PW_BACKGROUND)
+ {
+#ifdef ROOTLESS
+ if(IsFramedWindow(pWin)) {
+ RootlessStartDrawing(pWin);
+ RootlessDamageRegion(pWin, prgn);
- if (IsFramedWindow(pWin)) {
- RootlessStartDrawing(pWin);
- RootlessDamageRegion(pWin, prgn);
-
- if (pWin->backgroundState == ParentRelative) {
- if ((what == PW_BACKGROUND) ||
- (what == PW_BORDER && !pWin->borderIsPixel))
+ if(pWin->backgroundState == ParentRelative) {
RootlessSetPixmapOfAncestors(pWin);
+ }
}
- }
#endif
- if (what == PW_BACKGROUND) {
while (pWin->backgroundState == ParentRelative)
pWin = pWin->parent;
@@ -560,6 +575,18 @@ miPaintWindow(WindowPtr pWin, RegionPtr prgn, int what)
else {
PixmapPtr pixmap;
+#ifdef ROOTLESS
+ if(IsFramedWindow(pWin)) {
+ RootlessStartDrawing(pWin);
+ RootlessDamageRegion(pWin, prgn);
+
+ if(!pWin->borderIsPixel &&
+ pWin->backgroundState == ParentRelative) {
+ RootlessSetPixmapOfAncestors(pWin);
+ }
+ }
+#endif
+
tile_x_off = drawable->x;
tile_y_off = drawable->y;
@@ -568,6 +595,12 @@ miPaintWindow(WindowPtr pWin, RegionPtr prgn, int what)
return;
pixmap = (*pScreen->GetWindowPixmap) ((WindowPtr) drawable);
drawable = &pixmap->drawable;
+
+#ifdef XQUARTZ_CLIP_DEBUG
+ ErrorF(" Draw: %d %d %d %d\n",
+ drawable->x, drawable->y, drawable->width, drawable->height);
+#endif
+
#ifdef COMPOSITE
draw_x_off = pixmap->screen_x;
draw_y_off = pixmap->screen_y;
@@ -630,6 +663,57 @@ miPaintWindow(WindowPtr pWin, RegionPtr prgn, int what)
ChangeGC(NullClient, pGC, gcmask, gcval);
ValidateGC(drawable, pGC);
+#ifdef XQUARTZ_CLIP_DEBUG
+ ErrorF(" GC: %d %d %d %d\n",
+ pGC->pCompositeClip->extents.x1, pGC->pCompositeClip->extents.y1,
+ pGC->pCompositeClip->extents.x2 - pGC->pCompositeClip->extents.x1,
+ pGC->pCompositeClip->extents.y2 - pGC->pCompositeClip->extents.y1);
+#endif
+
+#ifdef XQUARTZ
+ /* Looks like our clipping isn't set right for some reason:
+ * http://xquartz.macosforge.org/trac/ticket/290
+ */
+ if(what == PW_BORDER) {
+
+#if 0
+ if(solid) {
+#if 1
+ fbFillRegionSolid(&pWin->drawable,
+ prgn,
+ 0,
+ fbReplicatePixel(fill.pixel,
+ pWin->drawable.bitsPerPixel));
+#else
+ fbFillRegionSolid(drawable,
+ prgn,
+ 0,
+ fbReplicatePixel(fill.pixel,
+ drawable->bitsPerPixel));
+#endif
+ return;
+ }
+#endif
+
+ pGC->pCompositeClip->extents.x1 += prgn->extents.x1;
+ pGC->pCompositeClip->extents.y1 += prgn->extents.y1;
+ pGC->pCompositeClip->extents.x2 += prgn->extents.x1;
+ pGC->pCompositeClip->extents.y2 += prgn->extents.y1;
+
+ if(pGC->pCompositeClip->extents.x2 > drawable->pScreen->width)
+ pGC->pCompositeClip->extents.x2 = drawable->pScreen->width;
+ if(pGC->pCompositeClip->extents.y2 > drawable->pScreen->height)
+ pGC->pCompositeClip->extents.y2 = drawable->pScreen->height;
+ }
+#endif
+
+#ifdef XQUARTZ_CLIP_DEBUG
+ ErrorF(" GC: %d %d %d %d\n",
+ pGC->pCompositeClip->extents.x1, pGC->pCompositeClip->extents.y1,
+ pGC->pCompositeClip->extents.x2 - pGC->pCompositeClip->extents.x1,
+ pGC->pCompositeClip->extents.y2 - pGC->pCompositeClip->extents.y1);
+#endif
+
numRects = RegionNumRects(prgn);
pbox = RegionRects(prgn);
for (i = numRects; --i >= 0; pbox++, prect++) {
commit 53e7d7ebbf1ca79e8efddae91f161b83697a744f
Author: Jeremy Huddleston <jeremyhu at apple.com>
Date: Fri Jan 13 12:00:57 2012 -0800
sdksyms.sh: Use CPPFLAGS, not CFLAGS
CFLAGS can include flags which are not useful to the preprocessor
or can even cause it to fail. This fixes a build issue on darwin
when building for more than one architecture.
Signed-off-by: Jeremy Huddleston <jeremyhu at apple.com>
Reviewed-by: Keith Packard <keithp at keithp.com>
diff --git a/hw/xfree86/Makefile.am b/hw/xfree86/Makefile.am
index 72be889..c0b81c3 100644
--- a/hw/xfree86/Makefile.am
+++ b/hw/xfree86/Makefile.am
@@ -38,7 +38,7 @@ DIST_SUBDIRS = common ddc i2c x86emu int10 fbdevhw os-support \
bin_PROGRAMS = Xorg
nodist_Xorg_SOURCES = sdksyms.c
-AM_CFLAGS = $(DIX_CFLAGS) @XORG_CFLAGS@
+AM_CPPFLAGS = $(DIX_CFLAGS) @XORG_CFLAGS@
INCLUDES = $(XORG_INCS) -I$(srcdir)/parser -I$(top_srcdir)/miext/cw \
-I$(srcdir)/ddc -I$(srcdir)/i2c -I$(srcdir)/modes -I$(srcdir)/ramdac
@@ -109,7 +109,7 @@ CLEANFILES = sdksyms.c sdksyms.dep
EXTRA_DIST += sdksyms.sh
sdksyms.dep sdksyms.c: sdksyms.sh
- CPP='$(CPP)' AWK='$(AWK)' $(SHELL) $(srcdir)/sdksyms.sh $(top_srcdir) $(CFLAGS) $(AM_CFLAGS) $(INCLUDES)
+ CPP='$(CPP)' AWK='$(AWK)' $(SHELL) $(srcdir)/sdksyms.sh $(top_srcdir) $(CPPFLAGS) $(AM_CPPFLAGS) $(INCLUDES)
SDKSYMS_DEP = sdksyms.dep
include $(SDKSYMS_DEP)
commit 7bc30b46376f2e6309e3597245cba9d1784cfe74
Author: Jeremy Huddleston <jeremyhu at apple.com>
Date: Thu Apr 19 18:48:22 2012 -0700
XQuartz: Add a hack to better handle clicky wheel scroll mice
We loose information from AppKit being in our way. Before adopting
smooth scrolling, we always rounded-up the number of scroll button
clicks per NSEvent. Now, the scroll value is accumulated in the
dix, and clicky scroll wheels with legacy X11 clients are seeing
an accumulation of error due to so many translations (button press
to smooth scrolling value in AppKit, passed to the dix, and then
synthesized into a button press). This attempts to make the
situation better.
http://xquartz.macosforge.org/trac/ticket/562
Signed-off-by: Jeremy Huddleston <jeremyhu at apple.com>
diff --git a/hw/xquartz/X11Application.m b/hw/xquartz/X11Application.m
index 3e9f108..f81a492 100644
--- a/hw/xquartz/X11Application.m
+++ b/hw/xquartz/X11Application.m
@@ -1643,6 +1643,26 @@ handle_mouse:
{
float deltaX = [e deltaX];
float deltaY = [e deltaY];
+ CGEventRef cge = [e CGEvent];
+ BOOL isContinuous =
+ CGEventGetIntegerValueField(cge, kCGScrollWheelEventIsContinuous);
+
+#if 0
+ /* Scale the scroll value by line height */
+ CGEventSourceRef source = CGEventCreateSourceFromEvent(cge);
+ if (source) {
+ double lineHeight = CGEventSourceGetPixelsPerLine(source);
+ CFRelease(source);
+
+ /* There's no real reason for the 1/5 ratio here other than that
+ * it feels like a good ratio after some testing.
+ */
+
+ deltaX *= lineHeight / 5.0;
+ deltaY *= lineHeight / 5.0;
+ }
+#endif
+
#if !defined(XPLUGIN_VERSION) || XPLUGIN_VERSION == 0
/* If we're in the background, we need to send a MotionNotify event
* first, since we aren't getting them on background mouse motion
@@ -1663,6 +1683,92 @@ handle_mouse:
deltaY *= -1;
}
#endif
+ /* This hack is in place to better deal with "clicky" scroll wheels:
+ * http://xquartz.macosforge.org/trac/ticket/562
+ */
+ if (!isContinuous) {
+ static NSTimeInterval lastScrollTime = 0.0;
+
+ /* These store how much extra we have already scrolled.
+ * ie, this is how much we ignore on the next event.
+ */
+ static double deficit_x = 0.0;
+ static double deficit_y = 0.0;
+
+ /* If we have past a second since the last scroll, wipe the slate
+ * clean
+ */
+ if ([e timestamp] - lastScrollTime > 1.0) {
+ deficit_x = deficit_y = 0.0;
+ }
+ lastScrollTime = [e timestamp];
+
+ if (deltaX != 0.0) {
+ /* If we changed directions, wipe the slate clean */
+ if ((deficit_x < 0.0 && deltaX > 0.0) ||
+ (deficit_x > 0.0 && deltaX < 0.0)) {
+ deficit_x = 0.0;
+ }
+
+ /* Eat up the deficit, but ensure that something is
+ * always sent
+ */ if (fabs(deltaX) > fabs(deficit_x)) {
+ deltaX -= deficit_x;
+
+ if (deltaX > 0.0) {
+ deficit_x = ceil(deltaX) - deltaX;
+ deltaX = ceil(deltaX);
+ } else {
+ deficit_x = floor(deltaX) - deltaX;
+ deltaX = floor(deltaX);
+ }
+ } else {
+ deficit_x -= deltaX;
+
+ if (deltaX > 0.0) {
+ deltaX = 1.0;
+ } else {
+ deltaX = -1.0;
+ }
+
+ deficit_x += deltaX;
+ }
+ }
+
+ if (deltaY != 0.0) {
+ /* If we changed directions, wipe the slate clean */
+ if ((deficit_y < 0.0 && deltaY > 0.0) ||
+ (deficit_y > 0.0 && deltaY < 0.0)) {
+ deficit_y = 0.0;
+ }
+
+ /* Eat up the deficit, but ensure that something is
+ * always sent
+ */
+ if (fabs(deltaY) > fabs(deficit_y)) {
+ deltaY -= deficit_y;
+
+ if (deltaY > 0.0) {
+ deficit_y = ceil(deltaY) - deltaY;
+ deltaY = ceil(deltaY);
+ } else {
+ deficit_y = floor(deltaY) - deltaY;
+ deltaY = floor(deltaY);
+ }
+ } else {
+ deficit_y -= deltaY;
+
+ if (deltaY > 0.0) {
+ deltaY = 1.0;
+ } else {
+ deltaY = -1.0;
+ }
+
+ deficit_y += deltaY;
+ }
+ }
+ }
+
DarwinSendScrollEvents(deltaX, deltaY);
break;
}
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